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Control device and method of flexible battery thermal management system, battery and vehicle

A technology of battery management system and thermal management system, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as poor thermal management consistency

Pending Publication Date: 2022-07-29
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a control device for a flexible battery thermal management system, which can ensure the consistency of the power battery temperature, delay the thermal runaway of the battery, improve the safety performance of the system, and improve the thermal management performance and service life of the battery liquid cold plate. The problem of poor thermal management consistency of battery thermal management systems in existing technologies

Method used

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  • Control device and method of flexible battery thermal management system, battery and vehicle
  • Control device and method of flexible battery thermal management system, battery and vehicle
  • Control device and method of flexible battery thermal management system, battery and vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0051] see Figure 1-Figure 3 , a control device for a flexible battery thermal management system, comprising a battery cell 1 , a flexible top tube 2 , a lower battery case 3 , a flexible side tube 4 , an electromagnetic fixer 5 and a sliding rod 6 .

[0052] The lower end of the flexible top tube 2 is fixed on the upper end of the battery cell 1; the sliding rod 6 is fixed on both sides of the battery cell 1; the flexible side pipe 4 is fixed on the sliding rod 6 by the electromagnetic holder 5; One end of the flexible side pipe 1 is connected to the vehicle water pump, and the vehicle water pump is connected to the vehicle HCU; the other end of the flexible side pipe 1 is connected to one side of the flexible side pipe 4 on both sides of the battery cell 1; The other side of the flexible side pipe 4 is connected to the circuit of the battery thermal management system BMS; the lower end of the battery cell 1 is fixed on the lower battery box 3; the electromagnetic holder 5 i...

Embodiment 2

[0060] see Image 6 , a control method of a control device of a flexible battery thermal management system, comprising the following steps:

[0061] Step 1. The battery management system BMS collects the temperature of the battery cell 1;

[0062] Step 2: The battery management system BMS judges according to the collected temperature of the battery cell 1, judges which control mode it is in, and executes the corresponding control mode; wherein, the control modes are divided into three types: no operation mode, thermal management mode mode, thermal runaway mode;

[0063] Define the maximum temperature of the battery cell 1 collected by the battery management system BMS as TM; the minimum temperature of the battery cell 1 collected by the battery management system BMS as TN; the temperature difference is TC, TC=TM-TN; the temperature difference is every second Calculated from the implementation test data; set the thermal runaway trigger temperature as TS, and the thermal manag...

Embodiment 3

[0070] This embodiment also provides a battery, which includes the control device of the above-mentioned flexible battery thermal management system, including a battery cell 1 , a flexible top tube 2 , a lower battery box 3 , a flexible side tube 4 , and an electromagnetic holder. 5 and slide bar 6.

[0071] The lower end of the flexible top tube 2 is fixed on the upper end of the battery cell 1; the sliding rod 6 is fixed on both sides of the battery cell 1; the flexible side pipe 4 is fixed on the sliding rod 6 by the electromagnetic holder 5; One end of the flexible side pipe 1 is connected to the vehicle water pump, and the vehicle water pump is connected to the vehicle HCU; the other end of the flexible side pipe 1 is connected to one side of the flexible side pipe 4 on both sides of the battery cell 1; The other side of the flexible side pipe 4 is connected to the circuit of the battery thermal management system BMS; the lower end of the battery cell 1 is fixed on the lo...

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Abstract

The invention relates to a control device and method of a flexible battery thermal management system, a battery and a vehicle. Comprising a battery monomer, a flexible top pipe, a battery lower box body, a flexible side pipe, an electromagnetic fixer and a sliding rod, the lower end of the flexible jacking pipe is fixed on the battery monomer; the sliding rods are fixed on the two sides of the battery monomers; the flexible side pipe is fixed on the sliding rod through the electromagnetic fixer; one end of the flexible side pipe is connected with a whole vehicle water pump; the other ends of the flexible side pipes are connected with the flexible side pipes on the two sides of the battery monomers; the other side of the flexible side pipe is connected with a loop of a battery heat management system (BMS); the electromagnetic fixer is connected with the whole vehicle HCU; and the single batteries are connected with the battery management system BMS. When thermal runaway happens to the single battery, the anti-explosion valve can break through the flexible jacking pipe, the cooling liquid flows out, flames of the single battery are extinguished, and thermal runaway is delayed. The temperature consistency of the power battery can be ensured, the thermal runaway of the battery is delayed, the safety performance of the system is improved, and the thermal management performance and the service life of the battery liquid cooling plate are improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a control device, method, battery and vehicle of a flexible battery thermal management system. Background technique [0002] As a key core component of new energy vehicles, the importance of its thermal management system is self-evident. The current mainstream battery thermal management system is the battery liquid cold plate, which has a complex structure and has two major problems: 1. The thermal management system has a complex structure and uneven temperature distribution of the battery, which is likely to cause poor thermal performance consistency between different cells of the battery; 2. .The thermal management system cannot solve the temperature consistency problem inside the battery cell. [0003] An existing power battery thermal management system and power battery thermal management control method include an expansion tank, an electric water pump, a power battery, ...

Claims

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Application Information

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IPC IPC(8): H01M10/48H01M10/617H01M10/625H01M10/6567
CPCH01M10/625H01M10/617H01M10/6567H01M10/486
Inventor 卢军于长虹李黎黎南海岳振东盛振兴宫吉山
Owner CHINA FIRST AUTOMOBILE
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