Condensate water prevention structure and battery module

Abstract

The utility model relates to the technical field of batteries, and discloses a condensate water prevention structure and a battery module, which comprises a waterproof cover, the waterproof cover is arranged between a liquid cooling plate and an electrical element, and the waterproof cover at least covers the electrical element from the top. According to the condensate water prevention structure, the condensate water generated on the liquid cooling plate can be shielded by the waterproof cover when dripping downwards, so that the condensate water cannot drip onto the electrical element, the electrical element is protected, and the risk of electrical insulation failure is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an anti-condensation structure and a battery module. Background Technology

[0002] With the popularization of fast charging technology for power batteries in new energy vehicles, and the large amount of heat generated by the battery cells in a short time due to ultra-fast charging, more aggressive thermal management technologies are generally adopted, such as large-area cooling of the battery cells, and cooling of the upper and lower surfaces of modules or CTP / CTB batteries.

[0003] In designs where the liquid cooling plate is placed on the upper surface of the battery cell, and the electrical components and liquid cooling interface are located on the same side, a large amount of electrical energy is converted into heat energy during fast charging. The liquid cooling system needs to quickly remove this heat to maintain the cell temperature. The coolant absorbs heat as it flows over the cell surface, causing its temperature to rise. However, the coolant near the inlet and outlet of the liquid cooling plate, just entering or about to flow out of the battery, is relatively cooler. This temperature difference creates localized cold spots on the liquid cooling plate near the inlet and outlet. When the surrounding warm, humid air encounters these cold spots, water vapor condenses into condensate. This condensate dripping onto the battery's electrical components can lead to electrical insulation failure. Currently, the industry lacks a good solution to eliminate the impact of condensate on the product's electrical insulation. Utility Model Content

[0004] In view of this, the present invention provides an anti-condensation structure and battery module to solve the problem of electrical insulation failure caused by condensation near the liquid cooling plate outlet due to temperature difference in a scheme where the liquid cooling plate is placed on the upper surface of the battery cell and the electrical components and the liquid cooling interface are located on the same side.

[0005] In a first aspect, this utility model provides an anti-condensation structure, comprising:

[0006] A waterproof cover is disposed between the liquid cooling plate and the electrical components, and the waterproof cover covers the electrical components at least from the top.

[0007] The aforementioned anti-condensation structure prevents condensation generated on the liquid cooling plate from dripping downwards, as the waterproof cover blocks the condensation from falling onto electrical components, thus protecting the electrical components and effectively reducing the risk of electrical insulation failure.

[0008] In one alternative embodiment, the waterproof cover includes:

[0009] A side waterproof cover is provided at the connection point between the module body and the electrical components;

[0010] A top waterproof cover is positioned directly above the electrical components and completely covers them.

[0011] The aforementioned waterproof cover, particularly the side waterproof cover, protects against condensation flowing down the outer wall of the module body, preventing it from seeping into the electrical components and further enhancing their waterproof performance. The top waterproof cover, projecting downwards, completely covers the electrical components, effectively preventing liquid intrusion from the liquid cooling plate.

[0012] In one alternative implementation, the side waterproof cover and the top waterproof cover are integrally connected or detachably connected, so that the overall positioning of the waterproof cover can be achieved by only positioning the side waterproof cover.

[0013] In one optional embodiment, the side waterproof cover is detachably mounted on the side wall of the module body. At least one fixing bracket is provided on the side wall of the side waterproof cover. The fixing bracket is used to position the electrical components, thereby protecting the sides of the electrical components through the side waterproof cover. This effectively prevents condensate from flowing along the outer side wall of the module body to the location of the electrical components.

[0014] In one alternative embodiment, multiple top waterproof covers are provided, with each top waterproof cover spaced apart from the others, and each top waterproof cover is respectively positioned over an electrical component.

[0015] The aforementioned waterproof cover protects each electrical component from a separate top waterproof cover. This ensures precise waterproofing of all electrical components while reducing the amount of material used to manufacture the top waterproof cover, thus optimizing cost and resource utilization efficiency.

[0016] In one optional embodiment, the top waterproof cover bends downward from a position near the side wall of the module body to a position away from the side wall of the module body, so as to guide the dripping condensate water, prevent the liquid from stagnating at the position of the top waterproof cover, and prevent moisture from accumulating and penetrating into the interior of the module body.

[0017] In one optional embodiment, the anti-condensation structure further includes:

[0018] A water-absorbing layer is provided on the top waterproof cover.

[0019] The aforementioned absorbent layer can absorb the condensate droplets generated by the upper liquid cooling plate, preventing the dripping condensate from splashing inside the chamber, thereby effectively reducing the risk of electrical insulation failure.

[0020] Secondly, this utility model also provides a battery module, comprising:

[0021] Module body;

[0022] A liquid cooling plate is disposed above the main body of the module;

[0023] Electrical components, which are connected to the side of the module body;

[0024] A condensation-proof structure is provided between the liquid cooling plate and the electrical components.

[0025] The aforementioned battery module can effectively protect electrical components from the risk of electrical insulation failure caused by condensation dripping from the upper liquid cooling plate. At the same time, the highly absorbent water layer can also absorb condensation dripping from the liquid cooling plate and water vapor inside the battery box, thereby preventing low-voltage electrical insulation failure caused by condensation in the upper liquid cooling plate solution.

[0026] In one alternative embodiment, the waterproof cover of the anti-condensation structure is disposed on the side wall of the module body, and the electrical components are positioned on the waterproof cover. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an anti-condensation structure provided by this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of a battery module provided by this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Anti-condensation structure; 101. Waterproof cover; 1011. Side waterproof cover; 1012. Top waterproof cover; 1013. Fixing frame; 102. Water-absorbing layer.

[0032] 200. Battery module; 201. Liquid cooling plate; 202. Module body; 203. Electrical components; 204. Rivets; 205. Liquid cooling plate inlet and outlet. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] With the popularization of fast charging technology for power batteries in new energy vehicles, ultra-fast charging technology is also one of the directions that car companies and battery suppliers are deeply cultivating and developing. Due to the large amount of heat generated by the battery cell in a short period of time caused by ultra-fast charging, more aggressive thermal management technologies are generally adopted, such as large-area cooling of the battery cell, cooling of the upper and lower surfaces of the module or CTP, CTB battery, etc.

[0035] In designs where the liquid cooling plate is placed on the upper surface of the battery cell, and the electrical components and liquid cooling interface are located on the same side, during fast charging, a large amount of electrical energy is converted into heat energy. The liquid cooling system needs to quickly remove this heat to maintain the cell temperature. The coolant absorbs heat as it flows over the cell surface, causing its temperature to rise. However, the coolant near the inlet and outlet of the liquid cooling plate, just entering or about to flow out of the battery, is relatively cooler. This temperature difference creates localized cold spots on the liquid cooling plate near the inlet and outlet. When the surrounding warm, humid air encounters these cold spots, water vapor condenses into condensate. This condensate dripping onto the battery's electrical components can lead to electrical insulation failure. Currently, the industry lacks a good solution to eliminate the impact of condensate on the product's electrical insulation.

[0036] Based on this, the present invention provides a condensation-proof structure, in which a waterproof cover is directly arranged above the electrical components located below the liquid cooling plate. By covering the electrical components with the waterproof cover, the dripping condensate will not come into contact with the electrical components.

[0037] On the other hand, there is a certain gap between the liquid cooling plate and the bottom wall of the battery box. When the condensate dripping from the liquid cooling plate comes into contact with the bottom wall of the battery box, there is a certain impact, which will cause splashing inside the battery box. When the condensate splashes onto the electrical components, it will also cause electrical insulation failure.

[0038] Based on this, the present invention provides a water-absorbing layer on the top waterproof cover to absorb the condensate droplets generated by the upper liquid cooling plate, thereby preventing the dripping condensate from splashing inside the box.

[0039] The specific embodiments of this utility model are described in detail below with reference to the anti-condensation structure of the first aspect of this utility model and the battery module of the second aspect of this utility model.

[0040] According to an embodiment of the present invention, in a first aspect, an anti-condensation structure is provided, combined with... Figure 1 As shown, a waterproof cover 101 is included. The waterproof cover 101 is disposed between the liquid cooling plate 201 and the electrical component 203, and the waterproof cover 101 covers the electrical component 203 at least from the top.

[0041] The aforementioned anti-condensation structure prevents condensation from dripping from the liquid cooling plate 201 onto the electrical component 203, thus protecting the electrical component 203 and effectively reducing the risk of electrical insulation failure.

[0042] In one embodiment, the waterproof cover 101 includes a side waterproof cover 1011 and a top waterproof cover 1012. The top waterproof cover 1012 is positioned directly above the electrical component 203, completely covering the electrical component 203. More specifically, the top waterproof cover 1012's projection from top to bottom completely covers the electrical component 203, effectively preventing liquid intrusion from the liquid cooling plate 201. The side waterproof cover 1011 is positioned at the connection between the module body 202 and the electrical component 203 to protect against condensate flowing down the outer wall of the module body 202, preventing condensate from flowing into the electrical component 203 from this position, further reinforcing the waterproof performance of the electrical component 203.

[0043] The side waterproof cover 1011 can also cover the mating surface between the plug of the electrical component 203 and the socket of the module body 202, further improving its waterproof performance.

[0044] In one embodiment, the side waterproof cover 1011 and the top waterproof cover 1012 are integrally connected or detachably connected. The connection between the side waterproof cover 1011 and the top waterproof cover 1012 allows for the overall positioning of the waterproof cover 101 by simply positioning the side waterproof cover 1011.

[0045] In one embodiment, the side waterproof cover 1011 is detachably mounted on the side wall of the module body 202. More specifically, the side waterproof cover 1011 has at least one first rivet hole, and the side of the module body 202 has at least one second rivet hole. The first rivet hole and the second rivet hole correspond to each other and are connected by a rivet 204. The rivet 204 is a plastic rivet.

[0046] At least one mounting bracket 1013 is provided on the side wall of the side waterproof cover 1011. The mounting bracket 1013 is used to position the electrical component 203. In this embodiment, the mounting bracket 1013 is integrated into the side waterproof cover 1011. The electrical component 203 is positioned on the side waterproof cover 1011 by the mounting bracket 1013. Thus, the side of the electrical component 203 can be protected by the side waterproof cover 1011, which can effectively prevent condensate from flowing along the outer wall of the module body 202 to the position of the electrical component 203.

[0047] In one embodiment, multiple top waterproof covers 1012 are provided, spaced apart from each other, with each top waterproof cover 1012 corresponding to one electrical component 203. In this embodiment, each electrical component 203 is shielded by a top waterproof cover 1012, which ensures accurate waterproofing of all electrical components 203 while reducing the amount of material used to manufacture the top waterproof covers 1012, thus optimizing cost and resource utilization efficiency.

[0048] In one embodiment, the top waterproof cover 1012 bends downward from a position close to the side wall of the module body 202 to a position away from the side wall of the module body 202, so as to guide the dripping condensate in time, prevent the liquid from stagnating at the position of the top waterproof cover 1012, and prevent moisture from accumulating and penetrating into the interior of the module body 202.

[0049] In one embodiment, the anti-condensation structure further includes a water-absorbing layer 102, which is disposed on the top waterproof cover 1012 to absorb condensate droplets generated by the upper liquid cooling plate 201, preventing the dripping condensate from splashing inside the box, thereby effectively reducing the risk of electrical insulation failure.

[0050] The absorbent layer 102 is made of absorbent material, which can be a sponge or non-woven fabric, etc. The specific material is not limited here.

[0051] The absorbent layer 102 is attached to the top waterproof cover 1012 with double-sided adhesive, or it can be fixed in other ways. There are no restrictions on the specific installation method here.

[0052] According to an embodiment of the present invention, in a second aspect, a battery module 200 is provided, which is a power battery module with an integrated top-mounted liquid-cooled plate, combined with... Figures 1 to 2 As shown, the module includes a module body 202, a liquid cooling plate 201, electrical components 203, and an anti-condensation structure 100. The module body 202 includes a battery and a battery casing. The liquid cooling plate 201 is disposed on top of the module body 202. The electrical components 203 are connected to the side of the module body 202. The anti-condensation structure 100 is disposed between the liquid cooling plate 201 and the electrical components 203.

[0053] The aforementioned battery module 200 can effectively protect the electrical components 203 from the risk of electrical insulation failure caused by condensation dripping from the upper liquid cooling plate 201. At the same time, the highly absorbent water layer 102 can also absorb the condensation dripping from the liquid cooling plate 201 and the water vapor inside the battery box, thereby preventing the problem of low-voltage electrical insulation failure caused by condensation in the upper liquid cooling plate 201 solution.

[0054] In this embodiment, electrical component 203 is a low-voltage connector, but other electrical components may also be used. The low-voltage connector is responsible for connecting the low-voltage circuit of the module body 202 to other low-voltage electrical systems of the vehicle.

[0055] The waterproof cover 101 of the anti-condensation structure 100 is installed on the side wall of the module body 202, and the electrical components 203 are positioned on the waterproof cover 101.

[0056] In one embodiment, the liquid cooling plate inlet / outlet 205 on the liquid cooling plate 201 is located on the portion of the liquid cooling plate 201 away from the module body 202. The liquid cooling plate inlet / outlet 205 includes an inlet pipe and an outlet pipe, which are located on two sides of the liquid cooling plate 201 to reduce interference with the module body 202. The anti-condensation structure 100 is located in the area formed between the inlet pipe and the outlet pipe.

[0057] The specific process of installing the aforementioned anti-condensation structure 100 and low-voltage connector onto the module body 202 is as follows:

[0058] The absorbent layer 102 is attached to the top waterproof cover 1012 with double-sided adhesive to form an anti-condensation structure 100.

[0059] The low-voltage connector is fixedly installed on the anti-condensation structure 100.

[0060] The anti-condensation structure 100 is placed below the liquid cooling plate 201, and the plug of the low-voltage connector is aligned with the socket of the module body 202. The low-voltage connector is then plugged into the module body 202. The anti-condensation structure 100 is then fixedly installed on the module body 202 by rivets 204, thereby achieving shielding and protection for the low-voltage connector.

[0061] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A condensation-proof structure, characterized in that, include: A waterproof cover (101) is disposed between the liquid cooling plate (201) and the electrical component (203), and the waterproof cover (101) covers the electrical component (203) at least from the top.

2. The anti-condensation structure according to claim 1, characterized in that, The waterproof cover (101) includes: A side waterproof cover (1011) is provided at the position where the module body (202) is connected to the electrical components (203); A top waterproof cover (1012) is positioned directly above the electrical component (203) and completely covers the electrical component (203).

3. The anti-condensation structure according to claim 2, characterized in that, The side waterproof cover (1011) and the top waterproof cover (1012) are integrally connected or detachably connected.

4. The anti-condensation structure according to claim 2, characterized in that, The side waterproof cover (1011) is detachably mounted on the side wall of the module body (202). At least one fixing bracket (1013) is provided on the side wall of the side waterproof cover (1011) for positioning electrical components (203).

5. The anti-condensation structure according to claim 2, characterized in that, Multiple top waterproof covers (1012) are provided, and each top waterproof cover (1012) is arranged at intervals between them. Each top waterproof cover (1012) is respectively covered above an electrical component (203).

6. The anti-condensation structure according to claim 2, characterized in that, The top waterproof cover (1012) bends downward from the position near the side wall of the module body (202) to the position away from the side wall of the module body (202) to guide the dripping condensate.

7. The anti-condensation structure according to any one of claims 2-6, characterized in that, The anti-condensation structure also includes: A water-absorbing layer (102) is disposed on a top waterproof cover (1012).

8. A battery module, characterized in that, include: Module body (202); A liquid cooling plate (201) is disposed above the module body (202); An electrical component (203) is connected to the side of the module body (202); The anti-condensation structure (100) according to any one of claims 1-7 is disposed between the liquid cooling plate (201) and the electrical component (203).

9. The battery module according to claim 8, characterized in that, The waterproof cover (101) of the anti-condensation structure (100) is set on the side wall of the module body (202), and the electrical component (203) is positioned on the waterproof cover (101).

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