Liquid cooling plate structure of new energy lithium battery system

Abstract

The invention relates to the technical field of lithium battery systems, in particular to a new energy lithium battery system liquid cooling plate structure which comprises a bottom plate, a vapor chamber and a water nozzle pipe joint, the vapor chamber is fixedly connected with one side of the bottom plate, a runner cavity is formed in one side of the joint of the bottom plate and the vapor chamber, and a connecting rubber plate is arranged between the vapor chamber and the bottom plate. The connecting rubber plate is transparent and is connected with the vapor chamber through UV glue solidification, the connecting rubber plate is connected with the bottom plate through hot melting, and the water nozzle pipe connector penetrates through the vapor chamber and the connecting rubber plate and extends into the runner cavity. The aluminum plate (metal) and the connecting rubber plate are subjected to UV light curing, the connecting strength of the aluminum plate (metal) and the connecting rubber plate is improved, adhesive connection between the aluminum plate and the plastic parts is converted into a hot melting connection mode between the plastic parts, and the leakage risk caused by the difference of expansion coefficients between the aluminum plate and the plastic parts is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery systems, and in particular to a liquid cooling plate structure of a new energy lithium battery system. Background Art

[0002] Liquid cooling plates are often installed on the outside of lithium batteries to reduce the temperature. Currently, liquid cooling plates for new energy lithium battery systems are composites of aluminum plates and plastic base plates. There are two ways to connect the aluminum plate and the plastic base plate: the first is to use ordinary adhesive bonding. The aluminum plate is first surface treated, and then structural adhesive is applied to the aluminum plate. It is then directly bonded to the plastic base plate and reinforced with rivets or bolts. The second method is to use adhesive film hot pressing and fusing. The aluminum plate is first surface treated, and then the aluminum plate, hot melt adhesive film, and plastic base plate are placed in a hot pressing mold and pressurized and heated until they are completely fused, and then cooled to room temperature.

[0003] Currently, common liquid cooling plates for lithium batteries have some shortcomings. The thermal expansion coefficients of metal and plastic are very different, the risk of leakage is high, and the adhesion strength is low and the erosion resistance is poor. Summary of the Invention

[0004] The present invention provides a new energy lithium battery system liquid cooling plate structure, which increases the bonding strength, avoids the influence of the large difference in thermal expansion coefficients between aluminum alloy and plastic on the product, and improves the erosion resistance of the product to solve the above-mentioned problems.

[0005] The present invention provides a new energy lithium battery system liquid cooling plate structure, including a base plate, a heat spreader and a faucet pipe joint, the heat spreader is fixedly connected to one side of the base plate, a flow channel cavity is opened on one side of the connection between the base plate and the heat spreader, a connecting rubber plate is provided between the heat spreader and the base plate, the connecting rubber plate is transparent and is connected to the heat spreader by UV glue curing, the connecting rubber plate and the base plate are connected by hot melt, and the faucet pipe joint passes through the heat spreader and the connecting rubber plate and extends to the inside of the flow channel cavity.

[0006] Preferably, the material of the faucet pipe joint is the same as that of the connecting rubber plate.

[0007] Preferably, the material of the water nozzle pipe joint is the same as the heat sink.

[0008] The above technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0009] 1. The structure provided by the present invention utilizes UV light curing of the aluminum plate (metal) and the connecting rubber plate to improve the connection strength of the aluminum plate (metal) and the connecting rubber plate. The strength (tensile, shear, and adhesion strength) after UV curing reaches more than 10MPa.

[0010] 2. The structure provided by the present invention converts the adhesive connection between the aluminum plate and the plastic part into a hot melt connection between the plastic parts, thus avoiding the risk of leakage caused by the difference in expansion coefficient between the aluminum plate and the plastic part;

[0011] 3. The structure provided by the present invention converts the adhesive connection between the aluminum plate and the plastic part into a hot melt connection between the plastic parts to form a flow channel of the same plastic material to increase the erosion resistance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] 1. Bottom plate; 11. Flow channel cavity; 2. Heat sink; 3. Water nozzle pipe joint; 4. Connecting rubber plate. DETAILED DESCRIPTION

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0017] Various embodiments of the present invention may be presented in the form of a range. It should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the present invention. Therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, regardless of the range. In addition, whenever a numerical range is indicated in the present invention, it is intended to include any quoted number (fractional or integer) within the indicated range. Unless otherwise specified, the various raw materials, reagents, instruments and equipment used in the present invention can be purchased commercially or can be prepared by existing equipment.

[0018] In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", specifically refer to the directions of the drawings in the accompanying drawings. In addition, in the present invention, the terms "including", "comprising", etc. mean "including but not limited to". In the present invention, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In the present invention, "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. Wherein A and B can be singular or plural. In the present invention, "at least one" means one or more, and "plurality" means two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, "at least one of a, b, or c" or "at least one of a, b and c" can both mean: a, b, c, ab, i.e. a and b, ac, bc or abc, where a, b, c can be single or multiple.

[0019] like Figure 1 As shown, a new energy lithium battery system liquid cooling plate structure includes a base plate 1, a heat spreader 2 and a faucet pipe joint 3. The heat spreader 2 is fixedly connected to one side of the base plate 1. A flow channel cavity 11 is opened on one side of the connection between the base plate 1 and the heat spreader 2. A connecting rubber plate 4 is provided between the heat spreader 2 and the base plate 1. The connecting rubber plate 4 is transparent and is connected to the heat spreader 2 by UV glue curing. The connecting rubber plate 4 is connected to the base plate 1 by hot melting. The faucet pipe joint 3 passes through the heat spreader 2 and the connecting rubber plate 4 and extends to the inside of the flow channel cavity 11.

[0020] Specifically: The aluminum plate (metal) and the connecting rubber plate are cured with UV light to improve the connection strength of the aluminum plate (metal) and the connecting rubber plate. The strength (tensile, shear, and adhesion strength) after UV curing reaches more than 10MPa.

[0021] like Figure 1 As shown: the material of the faucet pipe joint 3 is the same as that of the connecting rubber plate 4.

[0022] Specifically, the erosion resistance of the faucet pipe joint 3 can be improved, and the overall erosion resistance of the liquid cooling plate can be further improved.

[0023] like Figure 1 As shown: the material of the water nozzle pipe joint 3 is the same as the heat sink 2.

[0024] Principle of use: The base plate 1 is fixed by curing the UV glue connecting the connecting rubber plate 4 and the heat spreader 2, thereby increasing the structural strength of the connection between the base plate 1 and the heat spreader 2. The hot-melt connection between the connecting rubber plate 4 and the base plate 1 avoids unstable connection caused by the difference in expansion coefficient when the base plate 1 is directly connected to the heat spreader 2. At the same time, the hot-melt connection between the plastic parts forms a flow channel cavity 11 of the same plastic material, which increases the product's erosion resistance.

[0025] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to be construed in the widest manner consistent with the principles and novel features claimed herein.

Claims

1. A new energy lithium battery system liquid cooling plate structure, comprising a base plate (1), a soaking plate (2) and a water nozzle pipe joint (3), wherein the soaking plate (2) is fixedly connected to one side of the base plate (1), and a flow channel cavity (11) is provided on one side of the connection between the base plate (1) and the soaking plate (2), characterized in that: A connecting rubber plate (4) is provided between the heat spreader (2) and the bottom plate (1); the connecting rubber plate (4) is transparent and is connected to the heat spreader (2) by UV curing glue; the connecting rubber plate (4) is connected to the bottom plate (1) by hot melting; the water nozzle pipe joint (3) passes through the heat spreader (2) and the connecting rubber plate (4) and extends to the interior of the flow channel cavity (11).

2. The liquid cooling plate structure of a new energy lithium battery system according to claim 1, characterized in that: The material of the water nozzle pipe joint (3) is the same as that of the connecting rubber plate (4).

3. A new energy lithium battery system liquid cooling plate structure according to claim 1 or 2, characterized in that: The material of the water nozzle pipe joint (3) is the same as that of the heat soaking plate (2).

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