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Battery management system and battery management method

A technology of battery management system and battery management chip, which is applied in battery/fuel cell control devices, electrical devices, electric vehicles, etc., to achieve the effect of locating faults and avoiding damages

Active Publication Date: 2020-09-01
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a battery management system and a battery management method, the purpose of which is to wake up the battery management system in time to deal with the failure when the battery module fails due to the equalization circuit failure in the sleep mode

Method used

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  • Battery management system and battery management method
  • Battery management system and battery management method
  • Battery management system and battery management method

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Embodiment 1

[0038] figure 1 A structural diagram of the battery management system provided in this embodiment, figure 2 The structural diagram of the fault wake-up circuit in the battery management system provided in this embodiment. refer to figure 1 with figure 2 As shown, this embodiment provides a battery management system (Battery Management System, BMS), including at least one battery module 500, at least one battery management chip 800, at least one sampling circuit 600, at least one equalizing circuit 700, and a power supply module 300 , a central control unit (Microcontroller Unit, MCU) 200 and a fault wake-up circuit 100 . Each of the battery modules 500 corresponds to one of the battery management chips 800, one of the sampling circuits 600, and one of the equalizing circuits 700, and each of the sampling circuits 600 and the equalizing circuits 700 is connected to one of the battery modules. 500 and one battery management chip 800, the fault wake-up circuit 100 is respec...

Embodiment 2

[0062] There are usually multiple battery modules in an actual electric vehicle. In order to achieve balanced management of multiple battery modules, this embodiment provides a battery management system. Refer to figure 1 , figure 2 and Figure 4 As shown, the battery management system in this embodiment includes at least two battery modules 500 connected in series, at least two battery management chips 800 connected in series, at least two sampling circuits 600, at least two equalizing circuits 700, a power module 300, a central Control unit 200 and fault wake-up circuit 100; The fault wake-up circuit 100 includes at least two isolation circuits 10, at least two detection circuits 20 and at least two wake-up circuits 30; the input end of each of the isolation circuits 10 is connected to one of the In the battery management chip 800, the output end of each isolation circuit 10 is connected to the input end of the detection circuit 20, and the output end of each isolation cir...

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Abstract

The invention provides a battery management system and a battery management method. The battery management system comprises at least one battery module, at least one battery management chip, at leastone sampling circuit, at least one equalization circuit, a power supply module, a central control unit and a fault wake-up circuit, wherein each battery module corresponds to one battery management chip, one sampling circuit and one equalization circuit; the sampling circuit and the equalization circuit are respectively connected with one battery module and one battery management chip; and the fault wake-up circuit is respectively connected with the battery management chip, the power supply module and the central control unit. According to the battery management system provided by the invention, in the sleep mode, when the battery module has an undervoltage or overvoltage fault due to the failure of the equalization circuit, the battery management system can be awakened in time through thefault wake-up circuit to process the fault, so that the battery module is prevented from being damaged due to continuous overcharge or overdischarge.

Description

technical field [0001] The present invention relates to the field of new energy technologies, in particular to a battery management system and a battery management method. Background technique [0002] As the core of electric vehicles, the battery provides the power source for the whole vehicle. Due to the limitation of manufacturing level and process, the parameters of the currently produced battery cells will be different. With the passage of time, the inconsistency between the battery cells will worsened further. The inconsistency of the battery cells will reduce the service life of the battery and the cruising range of the system, and in severe cases, it will cause damage to the battery and bring safety hazards. [0003] In order to solve the inconsistency of battery cells, the most direct and effective method is to use balance management technology. The balance management function is usually implemented by a battery management system (Battery Management System, BMS). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/22B60L3/00
CPCB60L58/22B60L3/0046Y02T10/70
Inventor 宋中奇于垂顺施晨程郭孟强
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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