An ultra-low temperature lithium battery pack for electric vehicles
A technology for lithium battery packs and electric vehicles, applied to secondary batteries, circuits, electrical components, etc., can solve problems such as heating and low-temperature charging of lithium batteries, and achieve the effects of fewer connections, simplified temperature measuring devices, and small size
Active Publication Date: 2018-04-27
LIAONING KAIXIN NEW ENERGY TECH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
That is to say, over-temperature lithium batteries for pure electric vehicles not only need to solve the heating problem of low-temperature charging and operation of lithium batteries, but also solve the problem of heat dissipation after running for a period of time.
Method used
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[0035] The present invention will be described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the present invention is not limited to the following embodiments.
[0036] See Figure 1-Figure 12 , an ultra-low temperature lithium battery pack for electric vehicles, including a lithium battery pack composed of lithium batteries, the lithium battery pack is arranged in a battery box, and also includes a heating device, a heat dissipation device, and a control system, and the heating device and the heat dissipation device are controlled by the control system Heat and dissipate heat for lithium batteries.
[0037] The heating device includes a PTC heating film, a temperature transmitter, a battery film holder, and a heat transfer fixing ring. The PTC heating film is fixed on the lithium battery through the battery film holder, and the temperature transmitter is fixed on the positive electrode of the lithium bat...
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The invention relates to an ultralow temperature lithium battery pack for an electric automobile. The ultralow temperature lithium battery pack comprises a lithium battery pack, a heating device, a cooling device and a control system, wherein the lithium battery pack is composed of lithium batteries; the lithium battery pack is arranged in a battery box; and the heating device and the cooling device are controlled by the control system to heat and cool the lithium batteries. The ultralow temperature lithium battery pack has the advantages that the intelligent automatic heating, heat preservation and cooling system is suitable for the ultralow temperature lithium battery pack for the electric automobile and the operation requirements of warming and cooling; by diaphragm heating, the heating temperature of the lithium batteries can be kept uniform; configuration of a self-limiting positive temperature coefficient (PTC) heating film is reasonably arranged; the complicated control system is removed; the uniformity of the temperature of the lithium batteries is ensured; ultralow temperature operation of the lithium battery pack is realized; by a reasonable intelligent ventilation system for the lithium battery box, no over-temperature operation of the lithium batteries is realized; by a wireless transmission technology of general packet radio service (GPRS) internet of things, the temperature states of the lithium battery packs in a plurality of electric automobiles can be known in real time.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to an ultra-low temperature lithium battery pack for electric vehicles. Background technique [0002] With the shortage of petroleum energy and the enhancement of people's awareness of environmental protection, the power lithium battery as a vehicle energy storage device has attracted more and more attention in recent years. The power battery is the only power source for pure electric vehicles, and its performance and life are greatly affected by the ambient temperature. The performance and service life of power batteries directly determine the performance and cost of electric vehicles. [0003] Under low temperature conditions, when the temperature drops below 0°C, the charging of power lithium batteries (there is a risk of lithium ions being deposited and reduced on the surface of the negative electrode, forming lithium dendrites and causing a short circuit of the battery) beco...
Claims
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IPC IPC(8): H01M10/615H01M10/625H01M10/48H01M10/6563H01M10/613H01M10/637
CPCH01M10/486Y02E60/10
Inventor 冯素萍姜丽王永峰鞠以彬马唯佳王春岩
Owner LIAONING KAIXIN NEW ENERGY TECH