A water-cooled plate and a water-cooled battery

A technology of water-cooled plate and first flow channel, which is applied to secondary batteries, circuits, electrical components, etc., can solve the problems of battery performance degradation, large temperature difference of battery cells, and shortened battery life, so as to eliminate temperature difference and achieve consistent cooling effect. The effect of improving battery performance

Pending Publication Date: 2018-12-11
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems in the prior art that when a water-cooled plate is used to cool the battery, the temperature difference between the battery cells in the water-inlet area and the water-out area of ​​the water-cooled plate is large, resulting in a decrease in battery performance and shortening the service life of the battery, the present invention provides a water-cooled plate And water-cooled batteries, aiming to reduce the temperature difference between the water-inlet area and the water-out area of ​​the water-cooled plate, and specifically solve it through the following technical solutions:

Method used

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  • A water-cooled plate and a water-cooled battery
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  • A water-cooled plate and a water-cooled battery

Examples

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Embodiment 1

[0028] This embodiment provides a water-cooled plate, such as Figure 1-3 , including a base plate 1 and a cover plate 2, a groove is provided on the base plate 1, and the cover plate 2 is welded on the base plate 1, and an accommodation cavity is formed between the groove on the base plate 1 and the cover plate 2, and the accommodation cavity There are flow passages for coolant circulation. In this embodiment, four first flow channels 31, 32, 33, 34 are arranged in parallel in the front end area (water inlet area) of the substrate 1, and two second flow channels 41, 34 are arranged in parallel in the rear end area (water outlet area). 42. The sum of the cross-sectional areas of the four first flow channels 31, 32, 33, 34 is greater than the sum of the cross-sectional areas of the two second flow channels 41, 42. When flowing to the second flow passages 41, 42, due to the reduced cross-section, the flow velocity of the cooling liquid in the second flow passages 41, 42 is grea...

Embodiment 2

[0034] On the basis of Embodiment 1, this embodiment provides a water-cooled battery, such as Figure 4 A mounting hole is provided at the four corners of the water cooling plate, and the water cooling plate is fixed on the crossbeam of the lower box of the battery pack through bolts at the mounting holes. Among them, an insulating heat conduction pad 7 is provided between the cover plate 2 of the water-cooled plate and the battery module 5. When the thermal management system is turned on, the heat of the high-temperature battery is quickly transferred to the water-cooled plate through the heat-insulated heat conduction pad 7, and the coolant flows from the The liquid joint 21 flows in, passes through the first flow channel 31, 32, 33, 34 and the second flow channel 41, 42, and then flows out from the liquid outlet joint 22, taking away the heat generated by the battery module 5, and completing the cooling of the battery. After flowing out from the liquid outlet joint 22, it e...

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Abstract

The invention belongs to the technical field of water cooling and heat dissipation, in particular to a water-cooled plate and a water-cooled battery, comprises a receiving cavity for receiving coolant, A receiving cavity includes an anterior region and a posterior region, At least one first flow channel is included in that forepart region, At least one second flow channel is included in that region of the rear section, the first flow path communicates with the second flow path, the sum of the cross-sectional areas of all the first flow channels is greater than the sum of the cross-sectional areas of all the second flow channels, so that the flow rate of the coolant in the first flow channel in the water inlet region is smaller than that in the second flow channel in the water outlet region, the cooling effect of the cell in the water outlet region is improved, the temperature difference between the cell in the water inlet region and the cell in the water outlet region is small, and thebattery performance is improved; Furthermore, according to the length of each channel, the corresponding coolant flow rate is distributed, so that the cooling effect of each part of the battery is basically the same, the temperature difference existing in each part of the battery is further eliminated, the battery performance is improved, and the service life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of water cooling and heat dissipation, and in particular relates to a water cooling plate and a water cooling battery. Background technique [0002] The power battery is an important part of the electric vehicle. The high-voltage power battery will emit a lot of heat under working conditions. Therefore, a good heat dissipation system is an important system to ensure the charging and discharging performance and life of the power battery. The water cooling plate is a key component of the thermal management system. . [0003] In the traditional flat-plate water-cooled plate design, the flow cross-section of each part of the water-cooled plate flow channel from the inlet to the outlet adopts an equal-area design. Due to the long flow channel, the heated temperature of the cooling liquid gradually rises along the flow direction during the process of flowing through the water cooling plate, so the cooling ability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/617H01M10/625H01M10/6554H01M10/6556H01M10/6568
CPCH01M10/613H01M10/617H01M10/625H01M10/6554H01M10/6556H01M10/6568Y02E60/10
Inventor 安益路韩海滨刘安龙王志强何亮
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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