Manufacturing method of power battery, power battery and automobile

A power battery and manufacturing method technology, which is applied in the direction of batteries, secondary batteries, battery pack components, etc., can solve the problems of shortened battery life, consistency deviation, battery temperature rise, etc., to ensure reliability and safety, The effect of effective heat dissipation

Active Publication Date: 2021-02-09
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the power battery system, when the battery is charged and discharged at a high rate, the battery temperature will rise sharply, and due to the deviation of the consistency of the monomer, the temperature difference of the battery cell is large. Although a cooling system can be designed inside the battery system to dissipate heat from the battery, However, when the charge-discharge rate is very high, the battery temperature may rise sharply, which will shorten the service life of the battery and reduce the reliability and safety of the battery in use.

Method used

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  • Manufacturing method of power battery, power battery and automobile
  • Manufacturing method of power battery, power battery and automobile
  • Manufacturing method of power battery, power battery and automobile

Examples

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Effect test

Embodiment 1

[0053] An embodiment of the present invention provides a power battery, such as figure 1 and figure 2As shown, the power battery includes a battery module 100, and also includes a cooling medium heat dissipation unit (not shown in the figure). The cooling medium heat dissipation unit can adopt existing cooling methods such as air cooling, liquid cooling, and direct cooling. A cooling medium heat dissipation unit is integrated to dissipate heat for the battery module 100 , so the cooling medium heat dissipation unit in the present invention can directly use the original cooling medium heat dissipation unit of the power battery.

[0054] Please combine figure 1 and figure 2 The battery module 100 includes a casing 110, a battery cell 120, and a busbar 130. The battery cell 120 includes a plurality of single cells 121 arranged in sequence along a first direction, and the plurality of single cells 121 are assembled into one battery cell 120 such that The battery cell 120 can ...

Embodiment 2

[0064] The embodiment of the present invention also provides a method for manufacturing a power battery, the manufacturing method is used to manufacture the above-mentioned power battery, Figure 7 It is a block flow diagram of the manufacturing method of the power battery in the embodiment of the present invention, such as Figure 7 As shown, the manufacturing method includes the steps of:

[0065] S100, determining the physical parameters of the phase change material layer 140 and the thermally conductive potting adhesive layer 150;

[0066] Specifically, it is determined here that the physical parameters of the phase-change material layer 140 and the heat-conducting potting compound layer 150 can be estimated based on experience, and then the corresponding phase-change material and heat-conducting potting compound are selected according to the estimated physical parameters, and then through simulation experiments and Calculate to judge whether the phase change material and...

Embodiment 3

[0097] The embodiment of the present invention also provides an automobile, which includes the power battery as described above. Since the automobile of the present invention adopts the power battery of the present invention, it has at least the beneficial effects of the power battery of the present invention, and will not be repeated here. repeat.

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Abstract

The invention discloses a manufacturing method of a power battery, the power battery and an automobile. The power battery comprises a battery module and a cooling medium heat dissipation unit, a phasechange material layer and a heat conduction pouring sealant layer are arranged in the battery module, and the manufacturing method comprises the following steps: A, determining physical parameters ofthe phase change material layer and the heat conduction pouring sealant layer; B, judging whether physical parameters of the phase-change material layer and the heat-conducting pouring sealant layerare qualified or not: the judgment formula is QB-QDis = cm[delta]T and QDis = Q1 + Q2 + Q3 + Q4, calculating Q1, Q2, Q3 and Q4 through the physical parameters of the phase-change material layer and the heat-conducting pouring sealant layer and heat dissipation characteristics of the cooling medium heat dissipation unit, and substituting Q1, Q2, Q3 and Q4 into the formula; C, if the temperature rise delta T is within the qualified range, manufacturing the power battery according to the determined physical parameters of the phase change material layer and the heat conduction pouring sealant layer; if the temperature rise delta T is not within the qualified range, the physical parameters are readjusted. The power battery manufactured by adopting the manufacturing method disclosed by the invention can meet the heat dissipation requirement of the battery, and is relatively good in heat dissipation performance.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a method for manufacturing a power battery, a power battery and an automobile. Background technique [0002] In the power battery system, when the battery is charged and discharged at a high rate, the battery temperature will rise sharply, and due to the deviation of the consistency of the monomer, the temperature difference of the battery cell is large. Although a cooling system can be designed inside the battery system to dissipate heat from the battery, However, when the charge-discharge rate is very high, the temperature of the battery may rise sharply, which will shorten the service life of the battery and reduce the reliability and safety of the battery in use. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a method for manufacturing a power battery, a power battery and an automobile. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/647H01M10/653H01M10/659H01M50/204H01M50/209H01M50/244H01M50/249H01M50/258
CPCH01M10/613H01M10/625H01M10/647H01M10/653H01M10/659H01M2220/20Y02E60/10
Inventor 孟祥宇陈永胜孙焕丽许立超荣常如王书洋汪龙姜涛吴俊涛
Owner CHINA FIRST AUTOMOBILE
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