Constant flow type lithium ion power battery reciprocating flow cooling system and control method
A power battery and cooling system technology, applied in battery temperature control, secondary batteries, circuits, etc., can solve problems affecting the service life of the system, increase the volume and weight of the thermal management system, etc., to achieve easy operation and implementation, and improve the cooling effect. , the effect of improving lifespan and safety
Active Publication Date: 2021-08-06
CHANGAN UNIV
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Problems solved by technology
However, there are certain problems in the solutions of the prior art. Firstly, the reciprocating air is generated by using the flap gate valve and a separately designed cooling channel, which will increase the volume and weight of the thermal management system; secondly, the flap gate valve will greatly affect the entire system lifetime
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[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0031] see figure 1 , the present invention proposes a reciprocating flow cooling system for a lithium-ion power battery of a constant flow type, including a slide valve 2 , a working medium flow channel 3 , a circulation pump 4 and a cooler 5 . Wherein, the slide valve 2 includes a body 21 with an inner cavity and a valve body 22 disposed in the inner cavity of the body 21 ; five working fluid ports communicated with the inner cavity are provided on the body 21 .
[0032] Wherein, the first working fluid interface 211, the second working fluid interface 212 and the third working fluid interface 213 are provided on the side wall of the body 21, and the third working fluid interface 213 is located between the first working fluid interface 211 and the second working fluid interface. 212; the fourth working fluid interface 214 and the fifth work...
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The invention discloses a constant flow type lithium ion power battery reciprocating flow cooling system and control method. The cooling system comprises a slide valve and a cooler, wherein the slide valve comprises a body and a valve body arranged in an inner cavity of the body; five working medium interfaces communicated with the inner cavity are formed in the body; the valve body comprises two plugs, partition plates are arranged on the first working medium connector and the second working medium connector, the two plugs are arranged on the inner side of the first working medium connector and the inner side of the second working medium connector respectively, the outer diameter of each plug is equal to the inner diameter of an inner cavity of the body, and the width of each plug is smaller than the total width of the corresponding working medium connector; when the plugs move in the radial direction of the inner cavity of the body, the first working medium connector and the second working medium connector can be plugged; and the first working medium interface and the second working medium interface are connected with two ends of a battery pack, and the third working medium interface is connected with a cooling working medium outlet of the cooler. The control method of the cooling system is controlled according to three working states. The constant flow type lithium ion power battery reciprocating flow cooling system is simple to operate, and the reliability and the service life of the whole system are improved.
Description
technical field [0001] The invention belongs to the field of new energy batteries, and in particular relates to a reciprocating flow cooling system and a control method for a normal-flow lithium-ion power battery. Background technique [0002] In the lithium-ion battery cooling system, there is heat exchange between the battery and the cooling medium. The use of a one-way flow power battery system will cause a temperature gradient inside the power battery system, which will reduce the temperature uniformity of the power battery system and affect the performance of the power battery. performance. [0003] At present, some scholars have proposed a thermal management system based on reciprocating flow. The method adopted is: to design a flow channel in parallel in the traditional air-cooled flow channel, and use the opening and closing of two flip gate valves to realize the reciprocating flow of cooling working fluid. [0004] The research results show that the reciprocating f...
Claims
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Login to View More IPC IPC(8): H01M10/6567H01M10/6568H01M10/613H01M10/625H01M10/617H01M10/63H01M10/48H01M10/0525
CPCH01M10/6567H01M10/6568H01M10/613H01M10/625H01M10/617H01M10/63H01M10/486H01M10/0525Y02E60/10
Inventor 余宾宴马建赵轩许彬张凯冯镇刘钦王露
Owner CHANGAN UNIV