Lithium battery thermal management device and control method
A thermal management, lithium battery technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems affecting the balance of battery performance in the battery pack, high temperature sensitivity, shortened battery pack life, etc., to achieve a balanced guarantee performance, reducing battery temperature difference, and prolonging high discharge rate
Active Publication Date: 2021-05-25
HEFEI UNIV OF TECH
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Problems solved by technology
[0003] At this stage, lithium batteries are highly sensitive to temperature, and if the temperature is too high, the performance of the battery will be reduced and the lifespan will be shortened.
[0004] At present, the structure of the battery pack is arranged evenly and regularly. After adding the thermal management system, the batteries arranged in different positions have a large difference in heat exchange efficiency, resulting in a large temperature difference between the batteries.
A large temperature difference between batteries will affect the balance of battery performance in the battery pack, resulting in shortened battery pack life
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[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0041] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the compo...
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The invention discloses a lithium battery thermal management device and a control method, and the device comprises: a power supply device, which comprises a frame, wherein the interior of the frame is provided with a gradient increment diameter pipeline; a first loop device, wherein the first loop device is connected with the power supply device through a pipeline and is used for heat exchange between a fluid medium and the power supply device; and a second loop device, wherein the second loop device comprises a sensing device and a first control device, the sensing device and the first control device are arranged in the second loop device, the sensing device is connected with the first control device, the second loop device is connected with the first loop device through a wire, and the second loop device is connected with the power supply device and is used for controlling the first loop device. According to the invention, the temperature of the batteries can be effectively controlled, the temperature difference between the batteries is balanced, and the discharge rate of the batteries is improved.
Description
technical field [0001] The invention relates to the technical field of battery heat management, in particular to a lithium battery heat management device and a control method. Background technique [0002] With the continuous development of battery technology, lithium batteries are widely used due to their advantages such as high energy density and long cycle life. [0003] At this stage, lithium batteries are highly sensitive to temperature, and if the temperature is too high, the performance of the battery will be reduced and the lifespan will be shortened. If the temperature is too low, the performance of the battery will be reduced and the lifespan will be shortened. [0004] At present, the structure of the battery pack is regularly and evenly arranged. After adding the thermal management system, the battery pack is arranged in different positions, and there is a large difference in heat exchange efficiency, resulting in a large temperature difference in the battery. A...
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IPC IPC(8): H01M10/613H01M10/633H01M10/635H01M10/6568
CPCH01M10/613H01M10/635H01M10/633H01M10/6568Y02E60/10
Inventor 刘征宇刘项张政黄威王可晴
Owner HEFEI UNIV OF TECH