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JP-7857438-B2 - Battery energy processing equipment and vehicles

JP7857438B2JP 7857438 B2JP7857438 B2JP 7857438B2JP-7857438-B2

Inventors

  • シュイ、ルーホイ
  • トゥー、チーヨン
  • レン、シャオポン

Assignees

  • ビーワイディー カンパニー リミテッド

Dates

Publication Date
20260512
Application Date
20230403
Priority Date
20220525

Claims (13)

  1. An inverter (1), wherein the first terminal of the inverter (1) is configured to be connected to a battery (100), An energy storage element (2) is configured such that the first terminal of the energy storage element (2) is connected to an external power supply device (200), and the second terminal of the energy storage element (2) is connected to the second terminal of the inverter (1). The inverter (1) is connected to a third terminal and includes a controller (3), In the first state, the controller (3) controls the inverter (1) to enable the energy storage element (2) to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat. In the second state, at least a portion of the energy storage element (2) and at least a portion of the inverter (1) jointly form an adaptive voltage charger, and the controller (3) controls the adaptive voltage charger to charge the battery (100) . The inverter (1) comprises at least two-phase bridge arms (B), the energy storage element (2) comprises at least two coils (KM), the number of the at least two-phase bridge arms (B) is the same as the number of the at least two coils (KM), the number of at least one bridge arm among the at least two-phase bridge arms (B) is the same as the number of at least one coil among the at least two coils (KM), and the at least one bridge arm and the at least one coil jointly form the adaptive voltage charger. The first bus terminal of the at least two-phase bridge arm (B) is connected to the positive terminal of the battery (100), and the second bus terminal of the at least two-phase bridge arm (B) is connected to the negative terminal of the battery (100) and the negative terminal of the external power supply device (200). The second terminals of the at least two coils (KM) are connected in a one-to-one correspondence to the midpoint of the at least two-phase bridge arm (B), the first terminals of the at least two coils (KM) are connected to each other to form a neutral point, and the neutral point is configured to be connected to the positive terminal of the external power supply device (200). The present invention further comprises at least two first switches (K1), wherein the first terminals of the at least two first switches (K1) are configured to be connected to the positive terminal of the external power supply device (200), and the second terminals of the at least two first switches (K1) are connected in a one-to-one correspondence to the first terminals of the at least two coils (KM). Battery energy processing device (300).
  2. In the first state, the controller (3) controls at least two of the at least two-phase bridge arms (B) to enable the coils connected to the at least two of the at least two coils (KM) to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat, the apparatus (300) according to claim 1 .
  3. The apparatus (300) according to claim 1, wherein, in the second state, when the voltage of the external power supply device (200) is lower than the voltage of the battery (100), at least one of the at least two-phase bridge arms (B) and at least one of the at least two coils (KM) jointly form the adaptive voltage charger, and the controller (3) charges the at least one coil by controlling the lower bridge arm of the at least one-phase bridge arm to turn on the upper bridge arm of the at least one-phase bridge arm so that the upper bridge arm of the at least one- phase bridge arm is turned off.
  4. The apparatus (300) according to claim 3, wherein, in the second state, after the at least one coil has been charged, the controller (3) further controls the lower bridge arm of the at least one phase bridge arm to be turned off and controls the current to pass through the freewheeling diode of the upper bridge arm of the at least one phase bridge arm to boost charge the battery (100).
  5. The apparatus (300) according to claim 4, wherein the current is controlled to pass through the freewheeling diode of the upper bridge arm of the at least one phase bridge arm to boost charge the battery (100), and the insulated gate bipolar transistor of the upper bridge arm of the at least one phase bridge arm is controlled not to be turned on, and the current is controlled to pass through the freewheeling diode of the upper bridge arm of the at least one phase bridge arm to boost charge the battery (100).
  6. The apparatus (300) according to claim 3, wherein, in the second state, when the voltage of the external power supply device (200) is not lower than the voltage of the battery (100), the controller (3) controls the insulated gate bipolar transistors of the upper and lower bridge arms of the at least two-phase bridge arm (B) to not be turned on, and controls the current to pass through the freewheeling diode of the upper bridge arm of the at least two -phase bridge arm (B) to directly charge the battery (100).
  7. In the first state described above, the controller (3) controls the first switch (K1) connected to at least two of the coils (KM) of the at least two first switches (K1) to close, and controls the at least two phase bridge arm (B) connected to the at least two coils of the at least two phase bridge arm (B) to allow the at least two coils to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat. In the second state, at least one of the at least two coils (KM) and at least one phase bridge arm connected in correspondence with the at least one coil jointly form the adaptive voltage charger, and the controller (3) controls the first switch (K1) connected in correspondence with the at least one of the at least two first switches (K1) to close, thereby controlling the adaptive voltage charger to charge the battery (100), the apparatus (300) according to claim 1 .
  8. In the second state, the device (300) according to claim 1, wherein the non-defective bridge arm (B) among the at least two phase bridge arms (B) and the coil among the at least two coils (KM) connected to the non-defective bridge arm of the at least two phase bridge arms jointly form the adaptive voltage charger, and the controller (3) controls the first switch (K1) connected to the coil connected to the defective bridge arm among the at least two first switches (K1) to open, and controls the first switch (K1) connected to the coil connected to the non-defective bridge arm among the at least two first switches (K1) to close, thereby controlling the adaptive voltage charger to charge the battery (100).
  9. The energy storage element (2) further comprises a first capacitor (C1), The apparatus (300) according to claim 1, wherein the first terminal of the first capacitor (C1) is connected to the neutral point and the positive terminal of the external power supply device (200), and the second terminal of the first capacitor ( C1 ) is connected to the negative terminal of the battery (100) and the negative terminal of the external power supply device (200).
  10. In the first state, the controller (3) controls at least one of the at least two-phase bridge arms (B) to enable the first capacitor (C1) to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat. In the second state, at least one of the at least two coils (KM) and at least one phase bridge arm connected in correspondence with the at least one coil jointly form the adaptive voltage charger, and the controller (3) controls the adaptive voltage charger to charge the battery (100), the apparatus (300) according to claim 9 .
  11. An inverter (1), wherein the first terminal of the inverter (1) is configured to be connected to a battery (100), An energy storage element (2) wherein the first terminal of the energy storage element (2) is configured to be connected to an external power supply device (200), and the second terminal of the energy storage element (2) is connected to the second terminal of the inverter (1), The inverter (1) is connected to a third terminal and includes a controller (3), In the first state, the controller (3) controls the inverter (1) to enable the energy storage element (2) to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat. In the second state, at least a portion of the energy storage element (2) and at least a portion of the inverter (1) jointly form an adaptive voltage charger, and the controller (3) controls the adaptive voltage charger to charge the battery (100). The inverter (1) comprises at least two-phase bridge arms (B), the energy storage element (2) comprises at least two coils (KM), the number of the at least two-phase bridge arms (B) is the same as the number of the at least two coils (KM), the number of at least one bridge arm among the at least two-phase bridge arms (B) is the same as the number of at least one coil among the at least two coils (KM), and the at least one bridge arm and the at least one coil jointly form the adaptive voltage charger. The first bus terminal of the at least two-phase bridge arm (B) is connected to the positive terminal of the battery (100), and the second bus terminal of the at least two-phase bridge arm (B) is connected to the negative terminal of the battery (100) and the negative terminal of the external power supply device (200). The second terminals of the at least two coils (KM) are connected in a one-to-one correspondence to the midpoint of the at least two-phase bridge arm (B), the first terminals of the at least two coils (KM) are connected to each other to form a neutral point, and the neutral point is configured to be connected to the positive terminal of the external power supply device (200). The energy storage element (2) further comprises a first capacitor (C1), The first terminal of the first capacitor (C1) is connected to the neutral point and the positive terminal of the external power supply device (200), and the second terminal of the first capacitor (C1) is connected to the negative terminal of the battery (100) and the negative terminal of the external power supply device (200). The system further comprises at least two first switches (K1), wherein the first terminals of the at least two first switches (K1) are configured to be connected to the positive terminal of the external power supply device (200), and the second terminals of the at least two first switches (K1) are connected in a one-to-one correspondence to the first terminals of the at least two coils (KM), In the first state, the controller (3) controls the first switch (K1) connected to the coil connected to the faulty bridge arm among the at least two first switches (K1) to open, the first switch (K1) connected to the coil connected to the non-faulty bridge arm among the at least two first switches (K1) to close, and controls the non-faulty bridge arm among the at least two phase bridge arms (B) to enable the first capacitor (C1) to be charged and discharged by the battery (100), thereby causing the battery (100) to self- heat .
  12. An inverter (1), wherein the first terminal of the inverter (1) is configured to be connected to a battery (100), An energy storage element (2) wherein the first terminal of the energy storage element (2) is configured to be connected to an external power supply device (200), and the second terminal of the energy storage element (2) is connected to the second terminal of the inverter (1), The inverter (1) is connected to a third terminal and includes a controller (3), In the first state, the controller (3) controls the inverter (1) to enable the energy storage element (2) to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat. In the second state, at least a portion of the energy storage element (2) and at least a portion of the inverter (1) jointly form an adaptive voltage charger, and the controller (3) controls the adaptive voltage charger to charge the battery (100). The inverter (1) comprises at least two-phase bridge arms (B), the energy storage element (2) comprises at least two coils (KM), the number of the at least two-phase bridge arms (B) is the same as the number of the at least two coils (KM), the number of at least one bridge arm among the at least two-phase bridge arms (B) is the same as the number of at least one coil among the at least two coils (KM), and the at least one bridge arm and the at least one coil jointly form the adaptive voltage charger. The first bus terminal of the at least two-phase bridge arm (B) is connected to the positive terminal of the battery (100), and the second bus terminal of the at least two-phase bridge arm (B) is connected to the negative terminal of the battery (100) and the negative terminal of the external power supply device (200). The second terminals of the at least two coils (KM) are connected in a one-to-one correspondence to the midpoint of the at least two-phase bridge arm (B), the first terminals of the at least two coils (KM) are connected to each other to form a neutral point, and the neutral point is configured to be connected to the positive terminal of the external power supply device (200). At least two first switches (K1), wherein the first terminals of the at least two first switches (K1) are configured to be connected to the positive terminal of the external power supply device (200), and the second terminals of the at least two first switches (K1) are connected in a one-to-one correspondence to the first terminals of the at least two coils (KM), The system further comprises a second switch (K2), the first terminal of which is connected to the neutral point, and the second terminal of which is connected to the positive terminal of the external power supply device (200), The energy storage element (2) further comprises a first capacitor (C1), the first terminal of the first capacitor (C1) being connected to the neutral point and the positive terminal of the external power supply device (200), and the second terminal of the first capacitor (C1) being connected to the negative terminal of the battery (100) and the negative terminal of the external power supply device (200). In the first state, in response to receiving a first control command configured to instruct the battery (100) to perform inductive self-heating, the controller (3) controls the first switch (K1) connected to at least two coils (KM) of the at least two first switches (K1) to close, controls the second switch (K2) to open, and controls the at least two-phase bridge arm (B) connected to the at least two coils of the at least two-phase bridge arm (B) to allow the at least two coils to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat. In the first state, in response to receiving a second control command configured to instruct dielectric self-heating of the battery (100), the controller (3) controls the first switch (K1) connected to a coil connected to at least one phase bridge arm of the at least two first switches (K1) to close, controls the second switch (K2) to close, and controls at least one phase bridge arm of the at least two phase bridge arms (B) to allow the first capacitor (C1) and the battery (100) to be charged and discharged by the battery (100), thereby causing the battery (100) to self-heat.
  13. Battery (100) and A vehicle comprising a battery energy processing device (300) according to any one of claims 1 to 12 .

Description

Cross-reference of Related Applications This disclosure claims priority and interest to Chinese Patent Application No. 202210583659.9, filed on 25 May 2022, entitled “BATTERY ENERGY PROCESSING APPARATUS AND VEHICLE”. The entirety of the above referenced application is incorporated herein by reference. This disclosure relates to the field of vehicle technology, and more particularly to battery energy processing devices and vehicles. The power batteries used in electric vehicles experience significant performance degradation during charging and discharging in low-temperature environments. As a result, the capabilities of the drive system or charging system are limited in low-temperature conditions, significantly degrading the user experience. To mitigate the limitations imposed on power batteries in low-temperature environments, several heating solutions for power batteries have been proposed. Furthermore, rapid charging capabilities for power batteries are also essential features for new energy vehicles. Therefore, the urgent task now is to explore technical solutions that take both charging and heating into consideration. This is a structural block diagram of a battery energy processing device according to an exemplary embodiment.This is a circuit topology diagram of a battery energy processing device according to an exemplary embodiment.This is a schematic diagram illustrating the operating principle of boosting and charging a battery in a second preset state according to an exemplary embodiment.This is a schematic diagram illustrating the operating principle of boosting and charging a battery in a second preset state according to an exemplary embodiment.This is a circuit topology diagram of a battery energy processing device according to another exemplary embodiment.This is a circuit topology diagram of a battery energy processing device according to another exemplary embodiment.This is a circuit topology diagram of a battery energy processing device according to another exemplary embodiment.This is a schematic diagram illustrating the operating principle of heating a battery in a first preset state using the battery energy processing device shown in Figure 7, according to an exemplary embodiment.This is a schematic diagram illustrating the operating principle of heating a battery in a first preset state using the battery energy processing device shown in Figure 7, according to an exemplary embodiment.This is a schematic diagram illustrating the operating principle of heating a battery in a first preset state using the battery energy processing device shown in Figure 7, according to an exemplary embodiment.This is a schematic diagram illustrating the operating principle of heating a battery in a first preset state using the battery energy processing device shown in Figure 7, according to an exemplary embodiment.This is a circuit topology diagram of a battery energy processing device according to another exemplary embodiment.This is a circuit topology diagram of a battery energy processing device according to another exemplary embodiment. The specific implementations of this disclosure will be described in detail below with reference to the attached drawings. Please understand that the specific implementations described herein are used solely for illustrative purposes and are not intended to limit this disclosure. Please note that in this disclosure, all actions taken to acquire signals, information, or data are subject to the data protection rules and policies applicable to the country in which the action is taken, as well as the authority granted by the owner of the corresponding device. Figure 1 is a structural block diagram of a battery energy processing device according to an exemplary embodiment. As shown in Figure 1, the battery energy processing device 300 may include an inverter 1, an energy storage element 2, and a controller 3. The first terminal 11 of the inverter 1 is configured to be connected to the battery 100. The first terminal 21 of the energy storage element 2 is configured to be connected to an external power supply device 200, and the second terminal 22 of the energy storage element 2 is connected to the second terminal 12 of the inverter 1. The controller 3 is connected to the third terminal 13 of the inverter 1. In the first preset state, the controller 3 controls the inverter 1 to enable the energy storage element 2 to be charged and discharged by the battery 100 (for example, in a cyclic charging and discharging manner), thereby achieving self-heating of the battery 100. In the second preset state, at least a portion of the energy storage element 2 and at least a portion of the inverter 1 jointly form an adaptive voltage charger, and the controller 3 controls the adaptive voltage charger to charge the battery 100. The external power supply device 200 may be, for example, a charging pile or a storage battery. Circular charging and discharging means that charging and discharging are