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Power battery thermal management system based on multi-mode coupling and control method

A thermal management system and power battery technology, applied in battery temperature control, batteries, secondary batteries, etc., can solve the problems of high energy consumption, poor cooling uniformity, and low battery temperature of the thermal management system, so as to ensure uniformity and improve Performance, the effect of preventing battery overheating

Pending Publication Date: 2022-05-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, this disclosure proposes a power battery thermal management system and control method based on multi-mode coupling. The multi-mode coupling battery heat dissipation and heating, heat preservation management system and control strategy are used in the new energy vehicle power battery. It solves the problems of poor cooling uniformity of the existing power battery thermal management system, high energy consumption of the thermal management system, and low performance of the battery operating in cold regions

Method used

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  • Power battery thermal management system based on multi-mode coupling and control method

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Embodiment 1

[0033] Embodiment 1 of the present disclosure introduces a power battery thermal management system based on multi-mode coupling.

[0034] Such as figure 1 A power battery thermal management system based on multi-mode coupling is shown, including a battery pack, an injection circulation device, an energy storage device, a heating and cooling device, and a control device, specifically including a battery case 1, a multi-cavity cold plate 2, a power Battery 3, refrigerant 4, valve 5, heating circulation pipeline 6, radiator 7, three-way valve 8, energy storage box 9, energy storage material 10, heat exchange tube 11, energy storage temperature sensor 12, controller 13 , two-way circulating pump 14, heating cycle one-way valve 15, cooling cycle one-way valve 16, gas temperature sensor 17, gas pressure sensor 18, gas phase chamber 19, coupling ejector 20 and gas collection capillary 21.

Embodiment approach

[0035] As one or more implementations, the battery pack is used to dissipate heat for the power battery or to heat and keep the power battery warm after the vehicle stops in cold regions. Structurally, the battery pack includes a battery box 1 and multiple The cavity cold plate 2, the power battery 3 and the refrigerant 4 are distributed in the multi-cavity cold plate 2 in a liquid state.

[0036] As one or more implementations, the injection circulation device is used to realize the two-way automatic circulation of the heat dissipation system to reduce energy consumption in common cooling conditions and heat preservation in cold areas, and to ensure the heat dissipation capacity by forced circulation when the heat dissipation is large; in the structure The upper injection circulation device includes an energy storage temperature sensor 12, a bidirectional circulation pump 14, a heating circulation one-way valve 15, a heat dissipation circulation one-way valve 16, a gas tempera...

Embodiment 2

[0042] Embodiment 2 of the present disclosure introduces a control method of a power battery thermal management system based on multi-mode coupling, and adopts the multi-mode coupling-based power battery thermal management system introduced in Embodiment 1.

[0043] A power battery thermal management control method based on multi-mode coupling, including two states of the power battery running process and the power battery resting process;

[0044] Wherein, during the operation process, the heat released by the power battery enters the multi-cavity cold plate, the gas collecting capillary, the coupling injector and the gas phase chamber in turn, and is under the action of the gas pressure sensor, the energy storage temperature sensor and the control device , to achieve heat storage or loss;

[0045] In the resting state, heat circulation is realized under the action of the gas temperature sensor, the energy storage temperature sensor and the control device.

[0046] The speci...

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Abstract

The invention belongs to the technical field of power battery thermal management, and provides a power battery thermal management system based on multi-mode coupling and a control method, the power battery thermal management system comprises an injection circulation device, an energy storage device, a heating and heat dissipation device and a control device; wherein the injection circulation device comprises a coupling ejector, a gas phase chamber, a heating circulation one-way valve and a two-way circulation pump which are sequentially communicated, a heat dissipation circulation one-way valve is connected to the heating circulation one-way valve in parallel, and the conduction direction of the heating circulation one-way valve is opposite to that of the heat dissipation circulation one-way valve; a gas temperature sensor and a gas pressure sensor are arranged on the outer wall of the gas phase chamber; an energy storage temperature sensor is arranged on the outer wall of the energy storage device; the heating and radiating device is communicated with the two-way circulating pump through the energy storage device; the control device is electrically connected with the heating circulation one-way valve, the heat dissipation circulation one-way valve, the two-way circulation pump, the gas temperature sensor, the gas pressure sensor and the energy storage temperature sensor.

Description

technical field [0001] The disclosure belongs to the technical field of power battery thermal management, and in particular relates to a power battery thermal management system and control method based on multi-mode coupling. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Battery thermal management is an important factor affecting battery life, capacity, mileage and safety of battery vehicles. In order to make the battery work within a reasonable temperature range, the battery thermal management system includes the heat dissipation, heating and heat preservation of the battery. The cooling methods of the existing battery thermal management system, such as air cooling, water cooling, and direct cooling, have the problem of poor cooling uniformity. The cooling method of the phase change material heating tube has poor thermal conductivity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/615H01M10/625H01M10/63H01M10/637H01M10/6554H01M10/6563
CPCH01M10/63H01M10/613H01M10/615H01M10/637H01M10/6554H01M10/6563H01M10/625H01M2220/20Y02E60/10
Inventor 张强李娜李孟涵
Owner SHANDONG UNIV
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