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Battery heating system

A battery heating system and heating system technology, which is applied to secondary batteries, battery pack components, circuits, etc., can solve the problems of reducing the effective proportion of energy used in battery pack cruising range, reducing pure electric driving range, and consuming battery system energy. , to achieve the effect of various line connection methods, various installation positions, and reducing temperature unevenness

Active Publication Date: 2016-06-01
CONTEMPORARY AMPEREX TECH CO
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Problems solved by technology

Or use a liquid cooling system, or there is no heating function, or you need to use a heating rod for heating
If there is no heating function, it will limit the application of the battery
If heating rods or other types of heaters are used, and the electric energy of these heaters comes from the battery itself, it will consume the energy of the battery system, resulting in a reduction in the pure electric mileage of the electric vehicle. effective percentage

Method used

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Embodiment Construction

[0029] Below, will combine Figure 1 to Figure 7(a) ~(c) introduces the specific implementation manner of the battery heating system 100 of the present application.

[0030] refer to figure 1 As shown, the battery heating system of this application is integrated by two subsystems, the heating system branch and the power battery system branch. The battery pack system branch includes a battery pack 1 and several relays 2. The battery pack 1 includes a plurality of battery modules 11 and a heating subsystem 12. The heating subsystem 12 includes a plurality of heaters 121. The heating system branch is connected to the battery pack. The system branches are connected in parallel, and the relay 2 is used to control the two branches, so that the power supply of the heating system can come from both the external charging pile and the power battery pack itself. Wherein, the relay 2 includes a heating positive relay 21, a heating negative relay 22, a main positive relay 23 and a main n...

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Abstract

The invention relates to the technical field of batteries, in particular to a battery heating system. The system is integrated by two sub-systems, namely a heating system branch and a battery pack system branch, wherein the battery pack system branch comprises a battery pack and a plurality of relays; the battery pack comprises a plurality of battery modules and a heating sub-system; the heating sub-system comprises a plurality of heaters; each battery module is provided with at least one heater; and the heaters are arranged on the bottom surfaces or the side surfaces of the battery modules. The battery heating system can meet two requirements of driving heating and parking charging heating and can provide multi-mode experience for a user; the installation positions of the heaters are diverse; the battery heating system is simple and convenient to assemble, suitable for different applications, diverse in line connection mode and simple in line connection; and the temperature non-uniformity of the battery pack caused by heating can be effectively reduced.

Description

【Technical field】 [0001] The present application relates to the field of battery technology, in particular to a power battery heating system. 【Background technique】 [0002] Referring to Chinese Utility Model No. 204167438, a heating device for lithium-ion power batteries for vehicles is disclosed. The first relay, the heating element and the battery assembly of the device are connected in series to form a heating circuit. The heating element is composed of a plurality of heating films connected in series, and each heating film is pasted on the side of a single battery cell. [0003] At present, when the lithium-ion battery is generally in the range of 20-40 degrees, its charge and discharge performance is the best, and the service life is the best. The battery packs that appear on the market are basically air-cooled, and at the same time integrate solid heaters, such as metal heating diaphragms or PTC plate heaters. Or use a liquid cooling system, either without a heatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/657H01M50/204
CPCH01M10/615H01M10/625H01M10/657H01M50/204H01M10/0525H01M10/6571Y02E60/10
Inventor 李清亓海明
Owner CONTEMPORARY AMPEREX TECH CO
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