Thermal management system of battery pack based on combination design of four-way valve and varistor type cold plate
A combined design and management system technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of battery temperature rise, battery overcharge and overdischarge, thermal runaway, etc., to increase contact time and improve Cooling effect, the effect of improving the cooling effect
Active Publication Date: 2020-11-27
NANJING SKYSOURCE POWER TECH CO LTD
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Problems solved by technology
[0005] In order to make up for the shortcomings of the existing technology, the battery pack thermal management system based on the combined design of the four-way valve and the variable flow resistance cold plate proposed by the present invention is mainly used to solve the problem that most of the current battery pack cooling systems use internal liquid cooling pipelines , In the cooling condition, the inlet temperature is higher than the outlet temperature, which is likely to cause uneven temperature inside the battery pack. At the same time, the temperature rise of the battery cells in the battery pack is too high, which can easily cause thermal runaway; Overcharge and overdischarge, which can cause fire, explosion and other safety accidents
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[0023] As an embodiment of the present invention, a first liquid storage tank 15 is fixedly connected to the inner wall of the cooling plate 1 on both sides of the first liquid storage tank 12, and high-purity ethanol is filled in the first liquid storage tank 15; Both of the first liquid storage tanks 15 partially extend into the first liquid storage tank 12; the two first conduits 21 extend into the first liquid storage tank 15; the two first conduits 21 extend into the first liquid storage tank 15; One side of the first liquid storage tank 15 is fixedly connected with a threaded pipe 16; the other ends of the two threaded pipes 16 extend out of the first liquid storage tank 15 and communicate with the first liquid storage tank 12; during work, when When the coolant in the first conduit 21 passes through the first liquid storage tank 15, since the threaded pipe 16 in the first liquid storage tank 15 communicates with the first conduit 21, the coolant in the first single pipe ...
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The invention belongs to the technical field of battery pack thermal management systems, and particularly relates to a battery pack thermal management system based on the combined design of a four-wayvalve and a variable flow resistance type cold plate. The battery pack thermal management system comprises a cooling plate, j-shaped grooves are uniformly formed on the inner wall of the cooling plate, and four-way valves are fixedly connected to the two sides of the cooling plate. A first liquid storage tank liquid is formed in the inner wall of the cooling plate above the J-shaped groove, a condenser is fixedly connected into the inner wall of the first liquid storage tank, and second guide pipes are fixedly connected to valve heads at the bottoms of the two four-way valves, and a second liquid storage groove is formed in the inner wall of the cooling plate below the J-shaped groove. The battery pack thermal management system is mainly used for solving the problems that most of existingbattery pack cooling systems adopt internal liquid cooling pipelines, the inlet temperature is higher than the outlet temperature in the cooling working condition, so that nonuniformity of the internal temperature of the battery pack is easily caused; meanwhile, the temperature rise of cells in the battery pack is too high, thermal runaway is easily caused, and the over-charging and over-discharging of the battery cell are easily caused, so that the safety accidents, such as fire, explosion, etc., are caused.
Description
technical field [0001] The invention belongs to the technical field of battery pack thermal management systems, and specifically relates to a battery pack thermal management system designed based on the combination of a four-way valve and a variable flow resistance cold plate. Background technique [0002] With the increasingly severe energy and environmental problems, the country's strong support for new energy, and the increasingly mature key technologies of power batteries, power batteries have been widely used in electric cars, electric motorcycles, electric bicycles, solar energy, mobile communication terminal products and energy storage and other products. As the main energy storage component of new energy vehicles or hybrid vehicles, the battery pack is a key component of new energy vehicles or hybrid vehicles, and its performance and service life have an important impact on the performance of the vehicle. The battery pack in the on-board battery pack is composed of ...
Claims
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IPC IPC(8): H01M10/613H01M10/625H01M10/6568H01M10/6556H01M10/6569H01M10/6554
CPCH01M10/613H01M10/625H01M10/6554H01M10/6556H01M10/6568H01M10/6569Y02E60/10
Inventor 江民余修涛杨柳孙志斌王中玉芮露露
Owner NANJING SKYSOURCE POWER TECH CO LTD