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Direct-cooling type lithium ion battery cold plate

A lithium-ion battery, cold plate technology, applied in secondary batteries, battery/fuel cell control devices, circuits, etc., can solve problems such as excessive temperature difference, achieve flexible installation, improve the problem of excessive temperature difference, and reduce system costs. Effect

Active Publication Date: 2020-03-24
唐城琨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention discloses a direct-cooling lithium-ion battery cold plate, the cold plate adopts multi-unit combination or stacking to ensure sufficient refrigerant Evaporation takes away heat, avoiding a large amount of refrigerant evaporation at the front of the flow channel, and no refrigerant evaporation or insufficient refrigerant evaporation at the rear end, thereby reducing the temperature difference and solving the problem of excessive temperature difference

Method used

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  • Direct-cooling type lithium ion battery cold plate
  • Direct-cooling type lithium ion battery cold plate
  • Direct-cooling type lithium ion battery cold plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1-8 In the shown direct-cooling lithium-ion battery cold plate, the liquid collecting pipe 1 is connected to multiple cold plate units, and heat insulation cotton 5 is arranged between adjacent cold plate units. Each cold plate unit includes a liquid inlet plate and a As for the drain plate, a heat insulating plate 9 is arranged between the liquid inlet plate and the drain plate. The single liquid inlet of each cold plate communicates with the liquid inlet channel of one cold plate unit, and the outer surface of the liquid inlet plate is in contact with the surface of the battery. One end of the liquid collecting pipe 1 is provided with a plurality of liquid inlets, and the other end of the liquid collecting pipe 1 is provided with a plurality of liquid discharge ports, and each liquid discharge port is connected with a liquid discharge channel of a cold plate unit. The liquid channels are independent of each other. Such as Figure 6-7 As shown, both ...

Embodiment 2

[0040] Such as Figure 8-10 In the shown direct-cooling lithium-ion battery cold plate, the liquid collecting pipe 1 is connected with a cold plate unit, and the cold plate unit includes a lower liquid inlet plate and an upper liquid discharge plate, between the liquid inlet plate and the liquid discharge plate A heat insulation plate is arranged between them, and a liquid return port connected to each other is provided at one end of the liquid inlet plate and the liquid discharge plate. The upper part is provided with multiple liquid replenishment areas, and each liquid replenishment area communicates with the liquid inlet plate through the liquid replenishment port at the end.

[0041] One end of the liquid collection pipe is provided with a liquid inlet, and there are multiple liquid inlets, each liquid inlet is connected to a liquid inlet channel, and the multiple liquid inlet channels are respectively connected to the first liquid replenishment area 7, the second liquid r...

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Abstract

The invention discloses a direct-cooling type lithium ion battery cold plate. The cold plate comprises a liquid collecting pipe. The liquid collecting pipe is communicated with a plurality of cold plate units. Each cold plate unit comprises a liquid inlet plate and a liquid outlet plate. Liquid return ports which are communicated with each other are formed in one ends of the liquid inlet plate andthe liquid outlet plate, a plurality of micro-channels which are communicated with each other are respectively formed in the liquid inlet plate and the liquid outlet plate, and the outer surface of the liquid inlet plate of each cold plate unit is in contact with the surface of a battery. According to the cold plate, a multi-unit combination or stacking liquid supplementing mode is adopted to ensure that enough refrigerant evaporates to take away heat, the situation that a large amount of refrigerant evaporates at the front section of a flow channel and no refrigerant evaporates at the rear end or the refrigerant evaporates insufficiently is avoided, and therefore the temperature difference is reduced, and the problem that the temperature difference is too large is solved.

Description

technical field [0001] The invention relates to the field of thermal management of electric vehicles, in particular to a direct-cooling lithium-ion battery cold plate. Background technique [0002] At present, the thermal management methods of electric vehicles include natural cooling, forced air cooling, liquid cooling, and direct cooling; the direct cooling system directs the liquid medium through the cold plate. Take away the heat. This method has the advantages of compact system, light weight and good performance. However, direct cooling can easily lead to uneven temperature difference of the battery. Refrigerant or not enough refrigerant evaporates and takes away heat, which often leads to excessive temperature difference in the battery system, thereby affecting the battery life and cruising range. Contents of the invention [0003] In view of the above problems, the present invention discloses a direct-cooling lithium-ion battery cold plate, which adopts multi-unit ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/617H01M10/625H01M10/6554H01M10/6556H01M10/6569H01M10/6568H01M10/658H01M10/6551B60L58/26
CPCH01M10/613H01M10/617H01M10/625H01M10/6554H01M10/6556H01M10/6569H01M10/6568H01M10/658H01M10/6551B60L58/26Y02T90/16Y02T10/70Y02E60/10
Inventor 唐城琨
Owner 唐城琨