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Power battery pack with cooling system

A power battery pack and cooling system technology, applied in secondary batteries, battery temperature control, circuits, etc., can solve the problems of uneven heat dissipation, high temperature balance requirements, affecting the service life of battery packs, etc., to ensure electrical performance. Consistency, Maintaining Temperature Consistency, Maintaining Consistent Effects

Inactive Publication Date: 2011-06-08
河北海达峰新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Power batteries have been widely used in electric vehicles and ships, and power batteries will generate a lot of heat during use. In order to reduce the impact of heat on power batteries, air cooling or water cooling is mainly used to dissipate power batteries in the market. Air-cooling mainly relies on the wind speed generated during vehicle driving for cooling or using fans for heat dissipation, but no matter whether it is the wind speed generated during vehicle driving or cooling and heat dissipation through fans, the result is that the surface of the battery pack facing the wind has better heat dissipation, but the windward The heat dissipation effect of the back or side of the battery pack is poor. In short, it has uneven heat dissipation, which will cause inconsistent internal performance of the power battery pack and affect the service life of the battery pack; One battery box module has both air cooling and water cooling functions
In addition, due to the climate and regional temperature difference environment and other reasons, it is not possible to adjust the temperature difference between deep cooling and shallow cooling during the cooling and heat dissipation process of the power battery pack.
Because the power battery pack has high requirements for temperature balance, and there can be no slight temperature difference change, otherwise it will directly affect the consistency of the electrical performance of the battery pack, thus affecting the use effect and service life of the battery pack

Method used

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  • Power battery pack with cooling system
  • Power battery pack with cooling system
  • Power battery pack with cooling system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: refer to Figure 1-14 . A power battery pack with a heat dissipation system, including a box body 1, in which there are several battery cells 7, a heat dissipation cylinder 6 for placing the battery cells 7, a heat dissipation bottom plate 5, a water-air supply system 2 and a water-air return system 4 The heat dissipation tube 6 is provided with a heat dissipation flow channel 6e with the opening facing downward, and a plurality of installation holes 5a are provided on the upper end surface of the heat dissipation bottom plate 5, and each heat dissipation cylinder 6 is respectively placed in the installation holes 5a, and the center of the bottom of the installation hole 5a is provided with a water The air inlet 5a1 has a water-air outlet 5a2 on its bottom edge, and the water-air inlet 5a1 and the water-air outlet 5a2 are both connected to the heat dissipation flow channel 6e, and the bottom of the heat dissipation bottom plate 5 is provided with a water o...

Embodiment 2

[0033] Embodiment 2: refer to Figure 1-14 . On the basis of Example 1, the main function of the power battery pack with heat dissipation system is: it can determine whether to use air cooling or water cooling to dissipate heat for the battery pack according to the climate temperature difference environment. The natural wind is introduced into the water and air supply system 2 so that each battery cell 7 in the battery pack performs balanced cooling and heat dissipation. Water cooling is to use a water pump to input cooling water to the water and air supply system 2 so that each battery cell 7 in the battery pack can be cooled and dissipated in a balanced manner.

[0034] At the same time, it is possible to control and adjust the valves of the air channel opening and the water channel opening to arbitrarily determine the size and flow of the cooling function, even in the ultra-low temperature environment, the cooling and cooling function can be turned off. On the contrary, th...

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Abstract

The invention relates to a power battery pack with a cooling system, comprising a box body, wherein a plurality of battery cells, cooling tubes for containing the battery cells, a cooling base board, a water and gas supplying system and a water and gas backflow system are arranged in the box body; a cooling runner with a downward opening is arranged in the cooling tube; the upper end surface of the cooling base board is provided with a plurality of mounting holes; cooling tubes are respectively arranged in the mounting holes; the center of the bottom of each mounting hole is provided with a water and gas inlet; the bottom edge of the mounting hole is provided with a water and gas outlet; the water and gas inlet and the water and gas outlet are both communicated with the cooling runner; and the water and gas supplying system for connecting and communicating each water and gas inlet and the water and gas backflow system for connecting and communicating each water and gas outlet are arranged below the cooling base board. The power battery pack with a cooling system has the advantage of compact and reasonable structure, the temperature consistency of a monomer battery cell in the battery pack can be kept, the electrical property consistency of each monomer battery cell in the battery pack can be guaranteed, and the temperature consistency and the electrical property consistency can be kept under the working state of the battery pack under the ultralow-temperature working environment.

Description

technical field [0001] The invention relates to a battery pack, in particular to a power battery pack with a cooling system. Background technique [0002] Power batteries have been widely used in electric vehicles and ships, and power batteries will generate a lot of heat during use. In order to reduce the impact of heat on power batteries, air cooling or water cooling is mainly used to dissipate power batteries in the market. Air-cooling mainly depends on the wind speed generated during vehicle driving or using fans for heat dissipation, but no matter whether it is the wind speed generated during vehicle driving or cooling and heat dissipation through fans, the result is that the surface of the battery pack facing the wind has better heat dissipation, but the windward The heat dissipation effect of the back or side of the battery pack is poor. In short, there are places where the heat dissipation is uneven, which will cause inconsistent internal performance of the power bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/50H01M10/613H01M10/62H01M10/65
CPCY02E60/12
Inventor 高宾
Owner 河北海达峰新能源科技有限公司
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