Control system and charge and discharge control system

Patent metadata

Field	Value
Publication number	US-12199303-B2
Application number	US-202218083739-A
Country	US
Kind code	B2
Filing date	Dec 19, 2022
Priority date	Nov 9, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

Embodiments of this application relate to the field of power source control technologies, and disclose a control system and a charging and discharging control system. The control system includes a control circuit and an intermediate computer, where the control circuit includes a pressure sensor, a piezoelectric valve, and a controller; the pressure sensor is configured to collect pressure information; the controller is configured to receive the pressure information collected by the pressure sensor and transmit the pressure information to an intermediate computer; the intermediate computer is configured to transmit the pressure information to an upper computer, receive a preset pressure value generated by the upper computer based on the pressure information, and transmit the preset pressure value to the controller; and the controller is further configured to control the piezoelectric valve based on the preset pressure value.

First claim

What is claimed is:

1. A control system for controlling charge or discharge of a battery comprising a control circuit and an intermediate computer; wherein
the control circuit and the intermediate computer are connected via an RS485 interface or a controller area network (CAN) bus;
the control circuit comprises a pressure sensor, a piezoelectric valve, and a controller;
the pressure sensor is configured to obtain a pressure value inside the battery during the charge or discharge of the battery;
the controller is configured to receive the pressure value collected by the pressure sensor, and transmit the pressure value to the intermediate computer;
the intermediate computer is configured to transmit the pressure value to an upper computer which is in communication with the control system, receive a preset pressure value generated by the upper computer, and transmit the preset pressure value to the controller; and
the controller is further configured to control the piezoelectric valve based on the preset pressure value.

2. The control system according to claim 1 , wherein the intermediate computer is further configured to:
receive a pressure protection range from the upper computer, and
when the pressure value is beyond the pressure protection range, transmit a control instruction to the control circuit, to enable the control circuit to close the piezoelectric valve.

3. The control system according to claim 1 , wherein the control circuit further comprises a conversion unit; wherein
the conversion unit is configured to receive the pressure value and convert the pressure value into a digital signal.

4. The control system according to claim 1 , wherein the control circuit further comprises a pressure indicator; wherein
the pressure indicator is electrically connected to the controller and configured to display the pressure value.

5. The control system according to claim 1 , wherein the control system further comprises the upper computer, wherein
the upper computer is electrically connected to the intermediate computer and configured to receive control circuit status information from the intermediate computer; and
the upper computer is further configured to transmit a control instruction to the intermediate computer based on the control circuit status information.

6. The control system according to claim 5 , wherein
the control system comprises a plurality of control circuits; and
the plurality of control circuits are electrically connected to the intermediate computer.

7. The control system according to claim 6 , wherein
the control system comprises a plurality of intermediate computers; and
the plurality of intermediate computers are electrically connected to the upper computer.

8. A charge and discharge control system, comprising:
a power source; and
the control system according to claim 1 ,

wherein the control system is configured to control charge or discharge of the power source.

9. The control system according to claim 1 , wherein the pressure sensor, the piezoelectric valve, and the controller are integrated in the control circuit, and the controller is connected to the pressure sensor and to the piezoelectric valve, respectively.

10. The control system according to claim 1 , wherein the piezoelectric valve is configured to control and adjust the pressure inside the battery under the control of the controller; and
wherein when the pressure value obtained by the pressure sensor exceeds the preset pressure value, the controller transmits control information to the piezoelectric valve, and the piezoelectric valve adjusts the pressure inside the battery by controlling valve opening of the piezoelectric valve.

11. A method for controlling charge or discharge of a battery, performed by a control system that comprises a control circuit and an intermediate computer, wherein the control circuit and the intermediate computer are connected via an RS485 interface or a controller area network (CAN) bus, and the control circuit comprises a pressure sensor, a piezoelectric valve, and a controller, wherein the method comprises:
obtaining, by the pressure sensor, a pressure value inside the battery during the charge or discharge of the battery;
transmitting, by the controller, the pressure value collected by the pressure sensor to the intermediate computer;
transmitting, by the intermediate computer, the pressure value to an upper computer which is in communication with the control system, and receiving a preset pressure value generated by the upper computer; and
controlling, by the controller, the piezoelectric valve to adjust the pressure inside the battery according to the preset pressure value.

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Wang Jia
• Wang Zhihui

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J7/973

  in response to degree of gas development in the battery · CPC title

• H02J7/60

  including safety or protection arrangements · CPC title

• H02J7/40

  characterised by the exchange of charge or discharge related data · CPC title

• G01L19/083

  electrical · CPC title