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Power battery pack

A technology for power battery packs and battery modules, applied in secondary batteries, battery pack components, circuits, etc., can solve the problems of bulky battery packs, low energy density of battery packs, and complex liquid cooling system structure, etc. Effective thermal management, satisfying temperature cooling effect and improving energy density

Pending Publication Date: 2021-10-01
东风海博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

[0004] In view of this, the present invention proposes a power battery pack to solve the problems of the complex structure of the liquid cooling system in the battery pack in the prior art, resulting in a large volume of the battery pack and low energy density of the battery pack

Method used

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] Such as figure 1 shown, combined with Figure 2-4 , the embodiment of the present invention discloses a power battery pack, including a battery tray 1 and a case cover 2 installed on the battery tray 1. In this embodiment, the battery tray 1 adopts a tray method for box structure design to meet the box strength. Reduce the weight of the box body to achieve light weight, and at the same time, the operability is greatly improved compared with...

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Abstract

The invention provides a power battery pack, which comprises a battery tray and a box cover, wherein a plurality of first battery modules and a plurality of second battery modules are mounted in a containing space defined by the battery tray and the box cover, the first battery modules and the second battery modules are horizontally arranged in the containing space side by side, one second battery module is arranged between every two adjacent first battery modules, a liquid cooling system is arranged in the containing space, and comprises a plurality of liquid cooling plates, the liquid cooling plates are of U-shaped structures, the outer side faces of the first battery modules are sleeved with the liquid cooling plates respectively, one face of each liquid cooling plate is attached to the side face of the corresponding second battery module, the two free ends of each liquid cooling plate are connected with a liquid inlet pipe and a liquid outlet pipe respectively, and the liquid inlet pipes and the liquid outlet pipes are connected in parallel through liquid cooling pipe heads respectively. According to the invention, the liquid cooling plates and the battery modules are compactly arranged, so that the energy density and effective thermal management of the power battery pack are effectively improved on the premise of ensuring the temperature difference balance of all the battery modules.

Description

technical field [0001] The invention relates to the technical field of new energy batteries, in particular to a power battery pack. Background technique [0002] In related technologies, during the charging and discharging process of the power battery pack with high current, a large amount of heat will be accumulated inside the battery. If the heat is not controlled in time, the temperature of the battery module will rise sharply. In particular, large-capacity battery modules have higher energy density and higher heat release, which can easily lead to thermal runaway, causing problems such as gas release, smoke, and liquid leakage in the battery, and may even cause battery combustion and explosion. [0003] Traditional power battery packs usually use a liquid cooling system to perform a single thermal management of the single cells in the battery module. Therefore, the single cells are installed with a liquid cooling system, resulting in a large volume of the entire battery ...

Claims

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Application Information

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IPC IPC(8): H01M50/249H01M50/258H01M10/613H01M10/617H01M10/6567
CPCH01M50/249H01M50/258H01M10/613H01M10/617H01M10/6567Y02E60/10
Inventor 孙悦曹春发
Owner 东风海博新能源科技有限公司
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