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CN-120955860-B - Battery system, battery management system, power utilization device and energy storage device

CN120955860BCN 120955860 BCN120955860 BCN 120955860BCN-120955860-B

Abstract

The application provides a battery system, a battery management system, an electricity utilization device and an energy storage device, and belongs to the technical field of batteries. The battery system includes a plurality of battery partitions, any one of the plurality of battery partitions including a battery configured to output electric power, and a battery detection device connected to the battery and configured to detect a state of the battery to obtain battery state information, and a first controller communicatively connected to the battery detection device and configured to control any one of the plurality of battery partitions according to the battery state information of the battery partition, wherein the first controller is configured to control the battery in the battery partition to output or not output electric power according to the battery state information of the battery partition for any one of the plurality of battery partitions, any two of the plurality of battery partitions respectively including different battery detection devices. The battery system can realize reasonable control of the battery system.

Inventors

  • XIANG JINGFENG
  • LI WEIQIANG
  • WANG XINGCHANG

Assignees

  • 宁德时代新能源科技股份有限公司
  • 宁德时代润智软件科技有限公司

Dates

Publication Date
20260508
Application Date
20251013

Claims (14)

  1. 1.A battery system, comprising: A plurality of battery partitions, any one of the plurality of battery partitions comprising: a battery configured to output electric power, and A battery detection device connected with the battery and configured to detect the state of the battery to obtain battery state information, and A first controller communicatively connected to the battery detection device and configured to control any one of the plurality of battery partitions based on the battery status information of the battery partition, wherein the first controller is configured to: for any of the plurality of battery partitions: Controlling the battery in the battery partition to output or not to output electric energy according to the battery state information of the battery partition, wherein any two battery partitions in the plurality of battery partitions respectively comprise different battery detection devices, and the battery detection devices comprise: A first detection device connected with the battery and configured to detect the state of the battery in a first detection mode to obtain the battery state information, wherein the first detection device comprises a second controller configured to acquire the state information of the battery, or The second detection device is connected with the battery and is configured to detect the state of the battery in a second detection mode to obtain the battery state information, the second detection device comprises at least one detection element, the at least one detection element is connected with the battery and is configured to detect the state of the battery, the second detection device uses a daisy-chain communication mode to transmit the battery state information, and the second detection mode uses different types of components and parts with the first detection mode to complete the acquisition function of the state of the battery.
  2. 2. The battery system of claim 1, wherein the first detection means comprises: And the voltage dividing circuit is connected with the battery and is configured to divide the voltage output by the battery, and the voltage dividing circuit is in communication connection with the second controller.
  3. 3. The battery system of claim 2, wherein the first detection means further comprises: and a conversion device connected between the voltage dividing circuit and the second controller and configured to transmit the divided voltage to the second controller.
  4. 4. A battery system according to claim 3, wherein the conversion means comprises a decoder or an analog-to-digital converter.
  5. 5. The battery system of claim 2, wherein the first detection means further comprises: And the first isolation device is connected between the second controller and the first controller and is used for transmitting the battery state information to the first controller.
  6. 6. The battery system of claim 1, wherein the second detection means further comprises: And at least one second isolation device connected between the at least one detection element and the first controller for transmitting the battery state information to the first controller.
  7. 7. The battery system of claim 6, wherein the at least one second isolation device and the at least one sensing element are in one-to-one correspondence, any one of the at least one second isolation device being connected between the respective sensing element and the first controller.
  8. 8. The battery system of claim 1, wherein any two of the plurality of battery partitions each include the second detection means, and wherein the detection elements in the second detection means are different.
  9. 9. The battery system of any one of claims 1-7, wherein any two of the plurality of battery partitions each comprise the first detection device and the second detection device.
  10. 10. The battery system of any one of claims 1-8, wherein the cells in any two of the plurality of cell partitions are different.
  11. 11. The battery system of claim 1, wherein said controlling said battery in the battery partition to output or not to output power according to said battery state information of the battery partition comprises: Controlling the battery in the battery partition to output electric energy in response to the battery state information of the battery partition meeting preset voltage conditions and current conditions; and controlling the cells in the cell partition not to output electric energy in response to the cell state information of the cell partition not satisfying the voltage condition and/or the current condition.
  12. 12. A battery management system, comprising: A battery detection device connected with a battery and configured to detect the state of the battery to obtain battery state information, the battery detection device being arranged in any one of a plurality of battery partitions of a battery system, and any two of the plurality of battery partitions respectively including different battery detection devices, wherein the battery detection device comprises a first detection device connected with the battery and configured to detect the state of the battery in a first detection manner to obtain the battery state information, the first detection device comprises a second controller configured to acquire the state information of the battery, or a second detection device connected with the battery and configured to detect the state of the battery in a second detection manner to obtain the battery state information, the second detection device comprises at least one detection element connected with the battery and configured to detect the state of the battery, the second detection device uses a daisy-chain communication manner to transmit the battery state information, the second detection device acquires the state information of the battery in a second detection manner, and the first detection manner and the second detection device acquires the state information in a different type A first controller communicatively connected to the battery detection device and configured to control any one of the plurality of battery partitions based on the battery status information of the battery partition, wherein the first controller is configured to: for any of the plurality of battery partitions: And controlling the battery in the battery partition to output or not to output electric energy according to the battery state information of the battery partition.
  13. 13. An electrical device comprising a battery system according to any one of claims 1-11 for providing electrical energy.
  14. 14. An energy storage device comprising a battery system according to any one of claims 1-11 for storing electrical energy.

Description

Battery system, battery management system, power utilization device and energy storage device Technical Field The present application relates to the field of battery technologies, and in particular, to a battery system, a battery management system, an electric device, and an energy storage device. Background The energy conservation and emission reduction are key to the sustainable development of society, and the rechargeable battery has the characteristics of storing energy or releasing energy according to the needs, so that the rechargeable battery is widely applied to various electric devices or energy storage systems and is an important component for promoting energy transformation and sustainable development. For the new energy industry, battery technology is an important factor related to the development of the new energy industry. Currently, in a battery system, a battery and a battery management system matched with the battery are arranged. With the development of battery technology, the combination and the structure of the battery become complex and diversified, which also puts higher requirements on the reliability of the battery, and the accurate detection of the battery state in the battery system is important, so that the reasonable control of the battery with the complex structure is realized. Disclosure of Invention The application aims to at least solve the technical problem that a multi-battery system lacks a reasonable control mode in the background technology. To this end, it is an object of the present application to provide a battery system to achieve reasonable control of the battery system. An embodiment of a first aspect of the present application provides a battery system including a plurality of battery partitions, any one of the plurality of battery partitions including a battery configured to output electric power, and a battery detection device connected to the battery and configured to detect a state of the battery to obtain battery state information, and a first controller communicatively connected to the battery detection device and configured to control any one of the plurality of battery partitions according to the battery state information of the battery partition, wherein the first controller is configured to control the battery in the battery partition to output or not output electric power for any one of the plurality of battery partitions according to the battery state information of the battery partition, any two of the plurality of battery partitions including different battery detection devices, respectively. According to the technical scheme provided by the embodiment of the application, the plurality of partitions are arranged in the battery system, and the battery detection device which are independent of each other are respectively arranged in each partition, so that independent detection of each battery partition can be realized, interference among each battery partition is reduced, flexible control of each battery partition can be realized, for example, when detection faults exist in one partition, other partitions can still be normally detected, and independent control can be carried out on each battery partition. According to the battery state of each battery partition, corresponding control is carried out on each battery partition, redundant power supply of a battery system can be achieved, and reliability of a power supply process is improved. In some embodiments, the battery detection device includes a first detection device coupled to the battery and configured to detect a state of the battery in a first detection manner to obtain battery state information, or a second detection device coupled to the battery and configured to detect a state of the battery in a second detection manner to obtain battery state information, the second detection manner being different from the first detection manner. Different battery detection devices are used in different battery partitions, so that the risk of abnormality of each battery detection device can be reduced, and the reliability of the detection process is improved. In some embodiments, the first detection device includes a voltage divider circuit coupled to the battery and configured to divide a voltage output by the battery, and a second controller communicatively coupled to the voltage divider circuit and configured to collect status information of the battery. The voltage dividing circuit and the controller are used for detecting the battery state, so that high-precision detection of the battery state can be realized, and more accurate battery state information is obtained. In some embodiments, the first detection device further comprises a conversion device connected between the voltage dividing circuit and the second controller and configured to transmit the divided voltage to the second controller. The signal type which can be used by the second controller is obtained through the conversion device, so that