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Battery pack

A battery pack and cell technology, applied in secondary batteries, battery temperature control, circuits, etc., can solve the problems of large temperature difference between the air inlet and air outlet, large difference and uniformity of wind speed and flow in the internal area, etc., to prevent excessive temperature. Low or high, the effect of prolonging the service life, improving the safety performance

Active Publication Date: 2011-08-24
DONGGUAN AMPEREX TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing power battery packs generally use air-cooling. The biggest disadvantage of air-cooling is that it is affected by the internal wind resistance of the battery pack. The wind speed and flow in the internal area vary greatly. The temperature in the battery pack is uniform, which affects the service life of the battery pack

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Embodiment Construction

[0027] In order to make the purpose, technical solution and beneficial technical effects of the present invention clearer, the battery pack of the present invention will be further described in detail below in conjunction with the drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for understanding the present invention, not for limiting the present invention.

[0028] see Figure 1 to Figure 8 As shown, the battery pack of the present invention includes a box body 10 and several electric cores 23 housed in the box body 10, an inner heat exchanger 4 is provided in the box body 10, a liquid storage tank 3 is arranged outside the box body 10, and an external heat exchanger Device 1 and power pump 2. The power pump 2, the inner heat exchanger 4, the liquid storage tank 3 and the outer heat exchanger 1 are sealed and connected through a conduit 5 to form a closed circuit for circulating ...

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Abstract

The invention discloses a battery pack, which comprises a box body and battery cores accommodated in the box body. An internal heat exchanger is arranged in the box body; a liquid storage tank, an external heat exchanger and a power pump are arranged outside the box body; the power pump, the internal heat exchanger, the liquid storage tank and the external heat exchanger are hermetically connected through conduits to form a closed loop for a liquid medium to circulate; and the liquid medium in the liquid storage tank of the battery pack can flow through the battery cores by pushing of the power pump, flows into the external heat exchanger arranged outside the box body after heat exchange between the liquid medium and the battery cores is completed through the internal heat exchanger, and then returns to the liquid storage tank after heat exchange between the liquid medium and the outside is performed. All battery cores can be ensured to work within ideal temperature ranges by heating or cooling the liquid medium circulated in the closed loop so as to prevent the inside of the battery pack from excessive heat or low temperature and prolong the service life of the battery pack.

Description

technical field [0001] The invention relates to a battery pack, especially a battery pack with long service life. Background technique [0002] With the increasingly severe environmental problems, low-carbon economy has become the mainstream model of future economic development. As representatives of new energy vehicles, hybrid vehicles and electric vehicles have gradually been recognized by manufacturers and consumers. As the main source of power for new energy vehicles, the power battery pack has become the core component and key technology of electric vehicles. [0003] According to the characteristics and application occasions of the power battery pack itself, users put forward very strict requirements on its capacity, power, reliability, safety and lifespan. The thermal management system is a necessary means to achieve high power, prolong life, improve reliability and safety. With the intervention of the thermal management system, the heat generated locally in the bat...

Claims

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Application Information

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IPC IPC(8): H01M10/50H01M10/615H01M10/63H01M10/65
CPCY02E60/12Y02E60/10
Inventor 裴贻华
Owner DONGGUAN AMPEREX TECH