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CN-115968172-B - High-voltage control box, high-voltage control system and energy storage system

CN115968172BCN 115968172 BCN115968172 BCN 115968172BCN-115968172-B

Abstract

The invention relates to the field of high-voltage battery control, in particular to a high-voltage control box, a high-voltage control system and an energy storage system, wherein the high-voltage control box comprises a control box, a control loop and a battery management system, the control box is provided with a partition plate for supporting the battery management system, the partition plate is used for layering the battery management system and the control loop, the control box is provided with an air cooling heat dissipation module, the control box and a battery are separately arranged, the air cooling heat dissipation module is arranged, the battery management system is prevented from accumulating heat, the safe operation of the battery management system is ensured, the high-voltage control system is connected with the high-voltage control box, the cluster-level battery and the high-voltage control box are modularized, the battery/high-voltage control box is easy to replace and easy to maintain, and the energy storage system is externally arranged through a terminal resistance module for CAN communication, so that the universality of the high-voltage control system and the energy storage system is improved.

Inventors

  • SUN HUI
  • LIAO YULI
  • GONG MUHONG
  • XIAO XIONG
  • XIAO DONGMING
  • YANG MEIYAN

Assignees

  • 湖北亿纬动力有限公司

Dates

Publication Date
20260508
Application Date
20221220

Claims (13)

  1. 1. The high-voltage control box is characterized by comprising a control box (1), a control loop and a battery management system (4), wherein the control box (1) is provided with a partition board (5) for supporting the battery management system (4), the partition board (5) is used for layering the battery management system (4) and the control loop, and the control box (1) is provided with an air cooling heat dissipation module; The control box (1) comprises an upper box body, a lower box body, a back plate (7) and a front panel (21), wherein a power supply interface (26) is embedded in the front panel, the battery management system (4) comprises a BMS main control (41), the BMS main control (41) is arranged at one end, close to the back plate (7), of the control box (1), the battery management system (4) further comprises an acquisition wire harness (29) and a communication wire harness (30) which are arranged along the length direction of the control box (1), the acquisition wire harness (29) and the communication wire harness (30) are connected with the BMS main control (41), one side of the control box (1) is provided with the acquisition wire harness (29), the other side of the control box is provided with the communication wire harness (30), and the acquisition wire harness (29) and the communication wire harness (30) are arranged in the lower box body and are communicated with the power supply wire harness (31) of the power supply interface (26); the acquisition wire harness (29), the communication wire harness (30) and the power wire harness (31) are arranged in a separated mode.
  2. 2. A high voltage control box according to claim 1, characterized in that the control box (1) comprises a side plate (8), the air-cooled heat-dissipating module comprises an exhaust hole (9) arranged on the side plate (8) and a vent hole (10) arranged on the back plate (7), and the air-cooled heat-dissipating module further comprises a heat-dissipating fan (11) arranged in the control box (1) corresponding to the vent hole (10).
  3. 3. A high voltage control box according to claim 2, characterized in that the control loop comprises a positive pole loop (3) and a negative pole loop (2), the positive pole loop (3) comprises a positive pole input end (12), a positive fuse (13), a positive relay (14), a main loop switch (15) and a positive pole output end (16) which are sequentially connected in series by a first copper bar (36), the negative pole loop (2) comprises a negative pole input end (17), a negative fuse (18), a negative relay (19), a main loop switch (15) and a negative pole output end (20) which are sequentially connected in series by a second copper bar (37), and the positive relay (14) and/or the negative relay (19) are connected in parallel with the equalizing module (6).
  4. 4. A high voltage control box according to claim 3, characterized in that the front panel (21) engages the positive input (12), the positive output (16), the negative input (17) and the negative output (20).
  5. 5. A high voltage control box according to claim 4, characterized in that the front panel (21) is further embedded with a knob switch (22), the knob switch (22) is in control connection with the main circuit switch (15), the positive electrode output (16) and the negative electrode input (17) are located on the same side of the knob switch (22), and the positive electrode input (12) and the negative electrode output (20) are located on the other side of the knob switch (22).
  6. 6. The high-voltage control box according to claim 5, wherein the front panel (21) is embedded with an indicator lamp (23), a low-voltage communication interface (24) and a diagnosis interface (25) which are in communication connection with the battery management system (4), the front panel (21) is also embedded with a first miniature circuit breaker (27) and a second miniature circuit breaker (28), one side of the knob switch (22) is provided with the first miniature circuit breaker (27), the other side is provided with the second miniature circuit breaker (28), the first miniature circuit breaker (27) is connected in series between the radiator fan (11) and the power interface (26), and the second miniature circuit breaker (28) is connected in series between the power interface (26) and the battery management system (4).
  7. 7. The high-voltage control box according to claim 6, wherein the battery management system (4) comprises a temperature sensor (32) arranged in the control box (1), and further comprises a shunt (33) connected in series with the positive electrode loop (3) or the negative electrode loop (2), and the temperature sensor (32) and the shunt (33) are connected with the communication wire harness (30).
  8. 8. The high-voltage control box according to claim 6, wherein the BMS main control (41) is arranged in the upper-layer box, the balancing module (6) is arranged in a projection of the BMS main control (41) corresponding to the lower-layer box, and the balancing module (6) comprises a circulating relay (34) and a pre-charging resistor (35) which are connected in series.
  9. 9. A high voltage control box according to any of claims 3 to 8, characterized in that the positive fuse (13) and/or the negative fuse (18) are provided with micro switches, which micro switches, the positive relay (14) and the negative relay (19) are in communication connection with the battery management system (4), and that the main circuit switch (15) is in control connection with the battery management system (4).
  10. 10. A high voltage control box according to any of claims 3 to 8, characterized in that the bottom of the positive fuse (13), the positive relay (14) and the main circuit switch (15) is provided with the first copper bar (36), the bottom of the negative fuse (18), the negative relay (19) and the main circuit switch (15) is provided with the second copper bar (37), the first copper bar (36) and/or the second copper bar (37) comprises soft copper bars.
  11. 11. A high voltage control box according to any of claims 4 to 8, characterized in that the front panel (21) is provided with snap-fit access points (39) and/or that the front panel (21) is provided with extensions provided with through holes (40).
  12. 12. A high voltage control system comprising a high voltage control box according to any one of claims 1-11, and further comprising cluster-level cells connected to the high voltage control box.
  13. 13. An energy storage system comprising a termination resistor module and at least two high voltage control systems according to claim 12, wherein the termination resistor module is in CAN communication with the high voltage control systems.

Description

High-voltage control box, high-voltage control system and energy storage system Technical Field The invention relates to the field of high-voltage battery control, in particular to a high-voltage control box, a high-voltage control system and an energy storage system. Background The high-voltage battery system, namely commonly called a battery pack, is generally formed by connecting battery modules in a serial/parallel connection mode and sealing the battery modules into a whole by a shell meeting various requirements. However, in practice, the high-voltage battery system needs to be equipped with accessories such as a Battery Management System (BMS), a cooling system, and a part of low-voltage/high-voltage harness in addition to the battery pack, but is usually installed in an automobile as a whole for ensuring safety and sealability, and is generally regarded as an entire battery pack from the external appearance to the general user. At present, a battery pack integrating accessories such as a Battery Management System (BMS), a cooling system and part of low-voltage/high-voltage wire harnesses is provided, wherein the battery management system and a battery share a set of heat dissipation system, the heat dissipation effect of the battery management system is poor, heat accumulation is easy to occur at the battery management system, potential safety hazards are caused, and the Battery Management System (BMS) integrated with the battery is not detachable and is difficult to replace. Therefore, a technical solution is needed to solve the technical problems of poor heat dissipation and difficult battery replacement of the existing battery management system. Disclosure of Invention The invention aims to provide a high-voltage control box, a high-voltage control system and an energy storage system, aiming at the technical problems that the existing battery management system is poor in heat dissipation and batteries are difficult to replace. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The utility model provides a high pressure control box, includes control box, control circuit and battery management system, the control box sets up and is used for supporting battery management system's partition panel, the partition panel is used for the layering to set up battery management system with control circuit, the control box sets up forced air cooling heat dissipation module. According to the high-voltage control box, the control box and the battery are arranged separately, so that heat accumulation of a battery management system is prevented, the battery management system and the control loop are arranged separately through the partition plate, the battery management system can reduce electromagnetic interference received while heat accumulation is avoided, and the air cooling heat dissipation module is arranged in the control box, so that the control box can dissipate heat rapidly, and the operation safety of the control box is ensured. As a preferable scheme of the invention, the control box comprises a back plate and side plates, the air cooling heat dissipation module comprises exhaust holes arranged on the side plates and vent holes arranged on the back plate, and the air cooling heat dissipation module further comprises a heat dissipation fan arranged in the control box and corresponding to the vent holes. The ventilation holes are formed in the side plates, and the back plate is provided with the technical means of the cooling fan, so that the cooling fan at the back supplies air into the control box, and air flows towards the side plates at the two sides, thereby achieving good cooling effect. As a preferable scheme of the invention, the control loop comprises a positive pole loop and a negative pole loop, wherein the positive pole loop comprises a positive pole input end, a positive fuse, a positive relay, a main loop switch and a positive pole output end which are sequentially connected in series by adopting a first copper bar, the negative pole loop comprises a negative pole input end, a negative fuse, a negative relay, a main loop switch and a negative pole output end which are sequentially connected in series by adopting a second copper bar, and the positive relay and/or the negative relay is connected with the equalizing module in parallel. The control loop is connected through the copper bar, the sectional area of the copper bar is 3 x 25mm 2, and especially the sectional area of the copper bar connected with the fuse is 5 x 25mm 2, so that the heat dissipation area of the copper bar is increased, and the balance module is arranged to solve the circulation problem between the battery clusters. As a preferred embodiment of the present invention, the control box includes a front panel, and the front panel is engaged with the positive electrode input end, the positive electrode output end, the negative electrode input end, and the negative electrode