An electric vehicle power battery pack temperature management device and its manufacturing method and use method
A technology for power battery packs and electric vehicles, applied in electric vehicle charging technology, electric vehicles, secondary batteries, etc., can solve the problems of high R&D, manufacturing costs, high starting temperature of batteries, and technical difficulties, and achieve heating Convenience, high cooling efficiency and cost reduction effect
Active Publication Date: 2017-02-08
奇瑞新能源汽车股份有限公司
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Problems solved by technology
[0004] It can more effectively manage battery temperature and realize intelligent control, but its research and development and manufacturing costs are high, and the technology is difficult. At present, various thermal management problems have the following problems:
[0007] The battery water-cooling scheme, the water-cooling system is higher than the former two in terms of technical research, design and development, manufacturing, cost and technical performance requirements, especially considering the safety of battery use and the sealing of the water-cooling system High requirements are put forward, resulting in complicated process and high cost
[0008] To sum up, there are the following technical problems in the prior art: cooling air is used to dissipate heat from the battery pack, and the battery pack is arranged outside the cabin. Air conditioning in the passenger cabin
Liquid cooling dissipates heat from the battery pack, the design is complex, there are many components, the cost is high, and there are safety risks caused by liquid leakage
Method used
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Embodiment Construction
[0061] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment of various embodiments of the present invention.
[0062] Preferred embodiment one, such as image 3 As shown, when the car is running in a high-temperature environment, because the ambient temperature is high, the temperature of the battery is also higher. At this time, the battery will generate a temperature rise of about 15-20 ℃ when the battery is charged and discharged with high power. The local temperature in the bag will reach a risk state of 50-65℃. Of course, the temperature rise of various batteries varies, but the situation is similar. The battery must be dissipated and cooled. At this time, the battery pack BMS detects that the temperature is high and sends a signal to the vehicle controller. The vehicle controller receives the high temperature digital signal and sends an open command to the ⑨-thermal management system loop control val...
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The invention relates to a temperature management device of a power battery pack of an electric automobile, as well as a manufacture method and an application method thereof. The manufacture method comprises the following steps: cellular stainless steel sheet material is designed; the material is filled with flexible porous nano carbon fiber solvent adsorbate; solvent adopts a non-straight damp pressed flowing mode; a heating device is provided. The temperature management device can perform heating when the temperature is low and perform cooling when the temperature is high, so as to enable the temperature to be balanced. The temperature management (cooling, heating and balancing) device of the power battery pack applied to the electric automobile mainly perform management of heating at low temperature, cooling at high temperature and temperature balancing on the power battery pack, improves the safety of the power battery pack and the temperature management efficiency, reduces the temperature difference among cells in the power battery pack, ensures that the power battery pack can be normally operated when the finished automobile is in a defined operating environment, prolongs the service life of the power battery pack, improves the safety use of the power battery pack, and reduces the after-sales maintenance of the power battery pack.
Description
Technical field [0001] The invention relates to an electric vehicle power battery system, in particular to a temperature management device for an electric vehicle power battery pack, and a manufacturing method and use method thereof. Background technique [0002] As the main energy storage device loaded with battery packs on electric vehicles, battery packs are key components of electric vehicles and directly affect the performance of electric vehicles. Lithium-ion power batteries are currently used in electric vehicle battery packs due to their excellent power output characteristics and long life. Due to the limited space on the vehicle, the large amount of heat generated by the battery during operation is affected by the space and accumulates, resulting in uneven temperature everywhere, which affects the uniformity of the battery cells, and the use of low and high temperatures will reduce the battery charge and discharge cycle efficiency. The power and energy of the battery wi...
Claims
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IPC IPC(8): H01M10/617H01M10/625H01M10/6556H01M10/6568H01M10/6551B60L11/18
CPCB60L53/00Y02T10/70Y02T10/7072Y02T90/14
Inventor高锋柱张雷
Owner奇瑞新能源汽车股份有限公司