KR-20260066607-A - DRIVE DEVICE FOR DRIVING MOTOR AND OPERATING METHOD THEREOF

KR20260066607AKR 20260066607 AKR20260066607 AKR 20260066607AKR-20260066607-A

Abstract

A driving device for driving a motor and a method of operating the driving device are provided. The driving device includes a battery module, a conversion circuit, an energy storage circuit, and a control switch. The conversion circuit is coupled to the motor, a first power terminal of the battery module, and a second power terminal of the battery module. The control switch is coupled in series with the energy storage circuit between the first power terminal and the second power terminal. When the voltage value at the first power terminal is higher than a first set voltage value, the driving device turns on the control switch to enable the energy storage circuit to store electrical energy at the first power terminal.

Inventors

천 즈-웨이
수 시우-셴
정 윈-치

Assignees

아푸 이파워 씨오., 엘티디.

Dates

Publication Date: 20260512
Application Date: 20250604
Priority Date: 20241104

Claims (18)

As a driving device for driving a motor, the driving device is: Battery module; A conversion circuit coupled to the motor, the first power terminal of the battery module, and the second power terminal of the battery module; Energy storage circuits; and It includes a control switch coupled in series with the energy storage circuit between the first power terminal and the second power terminal, and A driving device that, in response to the voltage value of the first power terminal being higher than the first set voltage value, turns on the control switch to enable the energy storage circuit to store electrical energy in the first power terminal.
In paragraph 1, the energy storage circuit is: It includes a first switch, wherein the first terminal of the first switch is coupled to the first power terminal; and A driving device comprising an energy storage battery coupled between the second terminal of the first switch and the control switch.
A driving device according to claim 1, wherein in response to the voltage value of the first power terminal being higher than the first set voltage value, the driving device turns on the control switch and the first switch.
In paragraph 1, the driving device is: A second switch - the first terminal of the second switch is connected to the first power terminal -; and A driving device further comprising a resistor coupled between the second terminal of the second switch and the control switch.
In paragraph 1, In response to the voltage value at the first power terminal being higher than the second set voltage value, the driving device turns on the control switch, the first switch, and the second switch, and A driving device in which the second set voltage value is higher than the first set voltage value.
In claim 5, the driving device turns on the control switch, the first switch, and the second switch in response to the voltage value at the first power terminal being higher than the second set voltage value and the current value of the charging current flowing through the energy storage battery being higher than the set current value.
In claim 5, the driving device turns on the control switch and the second switch and turns off the first switch in response to the duration during which the current value of the charging current flowing through the energy storage battery is higher than the set current value being greater than the set duration.
In paragraph 5, During the period when the control switch, the first switch, and the second switch are turned on, in response to the voltage value at the first power terminal being higher than the third set voltage value, the driving device turns on the control switch and the second switch and turns off the first switch, and A driving device in which the third set voltage value is higher than the second set voltage value.
In claim 1, the battery module is a driving device implemented by an aluminum ion battery.
A method of operation for a driving device, wherein the driving device is for driving a motor, and the driving device comprises a battery module, a conversion circuit, an energy storage circuit, and a control switch, wherein the conversion circuit is coupled to the motor, a first power terminal of the battery module, and a second power terminal of the battery module, and the control switch is coupled in series with the energy storage circuit between the first power terminal and the second power terminal, and the method of operation is: A step of receiving a voltage value at the first power terminal; and A method of operation comprising the step of enabling the energy storage circuit to store electrical energy at the first power terminal by turning on the control switch in response to the voltage value at the first power terminal being higher than the first set voltage value.
In Clause 10, the above energy storage circuit is: It includes a first switch, wherein the first terminal of the first switch is coupled to the first power terminal; and A method of operation comprising an energy storage battery coupled between the second terminal of the first switch and the control switch.
In paragraph 11, the above method of operation is: A method of operation further comprising the step of turning on the control switch and the first switch in response to the voltage value at the first power terminal being higher than the first set voltage value.
In Clause 11, the energy storage circuit is: A second switch - the first terminal of the second switch is connected to the first power terminal -; and A method of operation further comprising a resistor coupled between the second terminal of the second switch and the control switch.
In Clause 13, the above method of operation is: The method further includes the step of turning on the control switch, the first switch, and the second switch in response to the voltage value at the first power terminal being higher than the second set voltage value, and The above second set voltage value is higher than the first set voltage value, operating method.
In paragraph 14, the above method of operation is: A method of operation further comprising the step of turning on the control switch, the first switch, and the second switch in response to the voltage value at the first power terminal being higher than the second set voltage value and the current value of the charging current flowing through the energy storage battery being higher than the set current value.
In paragraph 14, the above method of operation is: A method of operation further comprising the step of turning on the control switch and the second switch and turning off the first switch in response to the duration during which the current value of the charging current flowing through the energy storage battery is higher than the set current value being greater than the set duration.
In paragraph 14, the above method of operation is: The method further includes the step of turning on the control switch and the second switch and turning off the first switch in response to the voltage value at the first power terminal being higher than the third set voltage value during the period when the control switch, the first switch, and the second switch are turned on. The above third set voltage value is higher than the above second set voltage value, operating method.
In paragraph 10, the above battery module is a method of operation implemented by an aluminum ion battery.

Description

Drive device for driving a motor and method of operating the drive device {DRIVE DEVICE FOR DRIVING MOTOR AND OPERATING METHOD THEREOF} Cross-reference regarding related applications This application claims the benefit of priority to Taiwan application serial number 113142163 filed on November 4, 2024. The entire contents of the aforementioned patent application are incorporated herein by reference and form part of this specification. Technology field The present disclosure relates to a driving device and a method of operating the driving device, and in particular to a driving device for driving a motor and a method of operating the driving device. The drive device includes a battery module and a conversion circuit. The conversion circuit can provide electrical energy stored in the battery module to the motor. The motor is driven by electrical energy. When the motor decelerates or brakes, it generates back EMF. The conversion circuit recovers the electrical energy of the back EMF into the battery module. It should be noted that if the electrical energy of the back EMF is too high, the battery module may be damaged as it cannot withstand the voltage value of the back EMF. Similarly, the power switch of the conversion circuit may also be damaged as it cannot withstand the voltage value of the back EMF. Therefore, methods to protect the drive device when the motor decelerates or brakes to extend its lifespan are one of the main areas of research conducted by those with ordinary technical skills in the relevant field. FIG. 1 is a schematic diagram of a driving device according to an embodiment of the present disclosure. FIG. 2 is a schematic diagram of a driving device according to an embodiment of the present disclosure. FIG. 3 is a schematic diagram of a driving device according to an embodiment of the present disclosure. FIG. 4 is a flowchart of an operation method according to an embodiment of the present disclosure. Some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description, if the same reference numeral appears in different drawings, such reference numeral shall be considered as the same or similar element. These embodiments are merely a part of the present disclosure and do not disclose all possible embodiments of the present disclosure. More precisely, these embodiments are merely examples within the scope of the appended claims of the present disclosure. Refer to FIG. 1, which is a schematic diagram of a driving device according to an embodiment of the present disclosure. In this embodiment, the driving device (100) is intended to drive a motor (MTR). The driving device (100) includes a battery module (110), a conversion circuit (120), an energy storage circuit (130), and a control switch (140). The conversion circuit (120) is coupled to the first power terminal T1 of the motor (MTR) and the second power terminal T2 of the battery module (110). In this embodiment, the conversion circuit (120) can drive the motor (MTR) using battery power PB1 from the battery module (110). For example, when the motor (MTR) needs to be driven, the conversion circuit (120) acts as a multiphase power inverter. The conversion circuit (120) converts the DC battery power of the battery module (110) into AC driving power and provides the AC driving power to the motor (MTR). A control switch (140) is coupled in series with an energy storage circuit (130) between a first power terminal T1 and a second power terminal T2. In this embodiment, the first terminal of the energy storage circuit (130) is coupled to the first power terminal T1. The control switch (140) is coupled between the second terminal of the energy storage circuit (130) and the second power terminal T2. In some embodiments, the first terminal of the control switch (140) is coupled to the first power terminal T1. The energy storage circuit (130) is coupled between the second terminal of the control switch (140) and the second power terminal T2. In this embodiment, when the voltage value V1 of the first power terminal T1 is higher than the first set voltage value, the driving device (100) turns on the control switch (140) so that the energy storage circuit (130) can store electrical energy at the first power terminal T1. When the motor (MTR) decelerates or brakes, the motor (MTR) provides back EMF. When the motor (MTR) decelerates or brakes, the conversion circuit (120) acts as a rectifier capable of converting the back EMF energy from the motor (MTR) into battery power PB2. Accordingly, the voltage value V1 at the first power terminal T1 increases. The conversion circuit (120) can charge the battery module (110) using the battery power PB2. The driving device (100) receives the voltage value V1 at the first power terminal T1. If the voltage value V1 of the first power terminal T1 is higher than the first set voltage value, it is indicated that the voltage value V1 of the first powe