Box structure and battery
A box structure and board technology, which is applied in the direction of secondary batteries, structural parts, battery cover/end cover, etc., can solve the problem that the welding thickness of the welding liquid cold flow channel is difficult to guarantee, the structural strength of the battery box is high, and the cooling liquid Problems such as inflow into the battery pack to achieve improved heat transfer efficiency and heat transfer balance, improved cooling effect, and good sealing
Pending Publication Date: 2021-09-24
HUBEI JINQUAN NEW MATERIALS CO LTD
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Problems solved by technology
However, there are joints in the spliced liquid-cooled flow channel, and the welding thickness of the welded liquid-cooled flow channel is difficult to guarantee, and there may be gaps and leaks. There is a risk of cooling liquid flowing into the battery pack, and the cooling effect is also poor.
Moreover, the structural strength of the battery box provided with liquid cooling channels is high, resulting in a large volume of the battery box and reducing the energy density of the battery
Method used
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[0027] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct...
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The invention particularly discloses a box body structure and a battery. The box body structure comprises a first plate body, a second plate body and a box cover, the first plate body is provided with a first containing groove, the box cover is concavely provided with a second containing groove, the first containing groove and the second containing groove form a containing cavity for containing a battery cell, the box cover and the first plate body are fixedly arranged, and the second plate body is arranged on the side, away from the box cover, of the first plate body. The side, facing the second plate body, of the first plate body is concavely provided with a plurality of first grooves arranged at intervals, the first grooves can contain cooling liquid, the edge of the first plate body is provided with first connecting plates, and a second connecting plate is arranged between every two adjacent first grooves. The first connecting plate and the second connecting plate are fixedly connected with the second plate body through friction stir welding, and a second groove is formed between every two adjacent first grooves in a communicating mode. The box body structure is small in size, low in cooling liquid leakage risk and good in cooling effect, and the energy density of the battery can be improved.
Description
technical field [0001] The invention relates to the field of battery technology, in particular to a box structure and a battery. Background technique [0002] At present, in the battery box manufacturing process of most battery manufacturers' liquid-cooled battery packs, the liquid-cooled flow channel is generally formed by splicing or welding multiple plates. However, there are joints in the spliced liquid-cooled flow channel, and the welding thickness of the welded liquid-cooled flow channel is difficult to guarantee, and there may be gaps and leaks. There is a risk of cooling liquid flowing into the battery pack, and the cooling effect is also poor. Moreover, the structural strength of the battery case provided with the liquid cooling channel is high, resulting in a large volume of the battery case and reducing the energy density of the battery. Contents of the invention [0003] An object of the embodiments of the present invention is to provide a box structure with...
Claims
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IPC IPC(8): H01M10/613H01M10/617H01M10/6556H01M10/6568H01M10/6554H01M50/209H01M50/244H01M50/271H01M6/50
CPCH01M10/613H01M10/617H01M10/6556H01M10/6568H01M10/6554H01M50/209H01M50/244H01M50/271H01M6/5038Y02E60/10
Inventor 曹峰峰王钦龚木红
Owner HUBEI JINQUAN NEW MATERIALS CO LTD