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Spray cooling system for battery pack

A technology of spray cooling and battery packs, which is applied in the direction of secondary batteries, battery/fuel cell control devices, circuits, etc., can solve the problems of spray devices not working properly, and achieve simple structure, good spray cooling effect, low cost effect

Active Publication Date: 2022-04-26
CHONGQING JINKANG POWER NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned problem that the spray device cannot work normally due to the failure of the liquid drive device, the present invention provides a spray cooling system for the battery pack, by setting the liquid storage device higher than the spray device, and adding a liquid drive device Parallel artesian pipelines are connected to the spraying device, which can ensure the normal operation of the spraying device when the liquid drive device fails, with good safety

Method used

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  • Spray cooling system for battery pack
  • Spray cooling system for battery pack
  • Spray cooling system for battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a spray cooling system for a battery pack includes a liquid storage device 1 for storing spray liquid, a spray device 2 for spraying and cooling the battery module 3, and a connection between the liquid storage device 1 and the spray device 2 The liquid supply pipe 5, the liquid driving device 6 that drives the spray liquid to the spray device 2. Wherein, the liquid driving device 2 is arranged on the liquid supply pipe 5, the liquid storage device 1 is arranged higher than the spray device 2, and the liquid storage device 1 can provide spray liquid for the spray device 2 through the artesian pipe 4 connected in parallel with the drive device.

[0036] The liquid storage device 1 is set higher than the spray device 2, and the spray liquid in the liquid storage device 1 has gravitational potential energy. Under the action of its own gravity, it enters the spraying device 2 to spray and cool down the thermally runaway battery module 3 . When t...

Embodiment 2

[0051] In the first embodiment, the spray liquid in the liquid storage device 1 is simultaneously used as cooling liquid to cool the battery module 3 . When an independent liquid storage device 1 is installed on the automobile, the liquid storage device 1 is no longer connected to the cooling circuit of the battery pack, and the liquid storage device 1 directly extends into the battery box 13 through the liquid supply pipe 5 to supply the spray device 2 spray liquid.

[0052] Such as Figure 5 As shown, the liquid storage device 1 in this embodiment is an independent liquid storage device 103, the independent liquid storage device 103 is directly connected to the spray device 2 through the liquid supply pipe 5, and the liquid driving device 6 is installed on the liquid supply pipe 5, and the liquid drives The device 6 drives the spray liquid in the liquid storage device 1 into the spray device 2 .

[0053] The spraying device 2 in this embodiment is the same as that in the f...

Embodiment 3

[0058] In this embodiment, the spraying method can be designed as the cooling and spraying common spraying liquid in the first embodiment, or it can be designed as a spraying method with an external independent spraying device 2 . The liquid storage device 1 in this embodiment also includes a kettle body 101 containing spray liquid and a cover body 102 with waterproof and breathable functions.

[0059] Such as figure 2 and Figure 6 As shown, the difference between this embodiment and Embodiment 1 or Embodiment 2 is that the liquid storage device 1 in this embodiment is connected to the water replenishment device 12, and the spray liquid is replenished to the liquid storage device 1 through the water replenishment device 12 to ensure There is enough spray liquid to cope with the thermal runaway phenomenon of the battery module 3 .

[0060] Moreover, the battery module 3 is sealed and installed inside the box body 13. When the thermal runaway of the battery pack is serious, ...

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Abstract

The invention belongs to the technical field of battery pack cooling, and in particular relates to a spray cooling system for battery packs, comprising: a liquid storage device for storing spray liquid; a spray device for spraying and cooling battery modules; a liquid supply pipe, Used to connect the liquid storage device and the spray device; the liquid driving device is arranged on the liquid supply pipe; the liquid storage device is higher than the spray device; it also includes an artesian pipe, and the artesian pipe is connected to the The above liquid drive devices are connected in parallel. This scheme increases the supply channel for the spray liquid by adding an artesian pipe. When the liquid drive device fails, the spray liquid of this solution can enter the spray device through the artesian pipe, ensuring the normal operation of the spray device and good safety. Moreover, this solution can supply the spraying liquid to the spraying device only by relying on the gravity of the spraying liquid itself, without adding a power source, and the cost is low. It can ensure that all the spray liquid in the liquid storage device flows into the spray device, and the spray cooling effect is good.

Description

technical field [0001] The invention relates to the technical field of battery pack cooling, in particular to a spray cooling system for the battery pack. Background technique [0002] At present, electric vehicle safety accidents occur frequently, among which, one of the major factors causing electric vehicle safety accidents is the spontaneous combustion of batteries. When thermal runaway occurs in the battery module, a high-temperature heat flow is released. After the high-temperature heat flow leaks, it is easy to burn when it comes into contact with the air, which will seriously endanger the personal safety of passengers and drivers. [0003] Therefore, the current power battery is usually equipped with a fire sprinkler system. When the battery unit is thermally out of control, the fire sprinkler system will spray flame retardants into the battery pack to spray and cool the battery unit. [0004] In the existing battery pack, the sprinkler system needs to be equipped w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/6567H01M10/6568B60L58/26
CPCH01M10/613H01M10/625H01M10/6567H01M10/6568B60L58/26Y02T10/70Y02T90/16Y02E60/10
Inventor 赵建雄郭盛昌黄小清王爽
Owner CHONGQING JINKANG POWER NEW ENERGY CO LTD
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