Liquid cooling plate with zoom cooling structure and battery pack

Abstract

The utility model discloses a liquid cooling plate and battery package with zooming structure flow channel belong to battery cooling technical field. This liquid cooling plate with zooming cooling structure, including liquid cooling plate main part, the water inlet of liquid cooling plate main part is connected with the water inlet main pipe, and the water outlet of liquid cooling plate main part is connected with the water outlet main pipe, the water inlet main pipe and the water outlet main pipe between the communication has the flow channel, and the flow channel includes multiple straight pipes and multiple arc expansion pipes, and the straight pipe and arc expansion pipe staggeredly set, and the straight pipe and arc expansion pipe are communicated, form gourd -like flow channel or upside -down gourd -like flow channel. In the liquid cooling process, through gourd -like flow channel fully absorbs heat, through upside -down gourd -like flow channel high -efficiently takes away heat, solves the problem that the flow rate of the flow channel of the existing liquid cooling plate is slow, and the heat can not be eliminated quickly.

Description

Technical Field

[0001] This utility model belongs to the field of battery cooling technology, and in particular relates to a liquid cooling plate and battery pack with a scaling cooling structure. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] To fully utilize the performance of the power batteries in new energy vehicles and extend their lifespan, thermal management of the power batteries is necessary. A commonly used thermal management method is the liquid cooling plate solution. However, existing methods using liquid cooling plates for thermal management still have the following drawbacks: 1. Due to the slow flow rate of the current liquid cooling plate design, it cannot quickly eliminate the large amount of heat generated by the power battery during operation, resulting in the battery temperature rising too quickly and affecting the battery performance.

[0004] 2. Currently, the cooling surface of batteries is their side or bottom. In other words, liquid cooling plates are mostly installed on the side or bottom of the battery. The heat conduction area is small, the heat dissipation efficiency is not high, and it causes uneven temperature, resulting in abnormal degradation of the cell life. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model provides a liquid cooling plate and battery pack with a scaling cooling structure.

[0006] To achieve the above objectives, one or more embodiments of this utility model provide the following technical solutions: The first aspect of this utility model provides a liquid cooling plate with a scaling cooling structure; A liquid cooling plate with a scaling cooling structure includes a liquid cooling plate body, wherein the inlet of the liquid cooling plate body is connected to a main water inlet pipe, and the outlet of the liquid cooling plate body is connected to a main water outlet pipe. A flow channel connects the inlet main pipe and the outlet main pipe. The flow channel includes multiple straight pipes and multiple arc-shaped extension pipes. The straight pipes and the arc-shaped extension pipes are arranged alternately and are connected to form a gourd-shaped flow channel or an inverted gourd-shaped flow channel.

[0007] In some embodiments, the arc-shaped extension pipe is a spherical pipe or a rugby ball-shaped pipe.

[0008] In some embodiments, the number of flow channels is multiple, and the spacing between the multiple flow channels is set.

[0009] In some embodiments, the liquid cooling plate body is a rectangular structure that matches the block-shaped battery pack.

[0010] In some embodiments, both the inlet manifold and the outlet manifold are located inside the liquid cooling plate body.

[0011] In some embodiments, the diameter of the straight pipe is smaller than the maximum diameter of the arc-shaped extended pipe.

[0012] The second aspect of this utility model provides a battery pack; A battery pack includes the aforementioned liquid-cooled plate with a scaling structure flow channel and a housing, wherein the liquid-cooled plate with the scaling structure flow channel is horizontally disposed inside the housing.

[0013] In some embodiments, the housing contains a horizontally arranged block battery pack, and the liquid cooling plate with a scaling structure flow channel is respectively disposed above and below the block battery pack.

[0014] In some embodiments, the block battery pack comprises a plurality of stacked block batteries.

[0015] In some embodiments, the block battery includes a plurality of blade cells arranged horizontally.

[0016] The above one or more technical solutions have the following beneficial effects: (1) The technical solution provided by this utility model is that the flow channel is formed by multiple alternating straight pipes and arc-shaped expansion pipes connected in sequence. When the coolant flows, the arc-shaped expansion pipes and straight pipes form an inverted gourd-shaped flow channel. The coolant forms a decelerating turbulent flow in the inverted gourd-shaped flow channel to absorb the heat of the battery pack for as long as possible. The straight pipes and the next arc-shaped expansion pipes form a gourd-shaped flow channel. The fluid accelerates in the gourd-shaped flow channel and can quickly carry away the heat previously absorbed. Compared with the flow channel formed by straight channels, it can quickly absorb and carry away heat.

[0017] (2) The technical solution provided by this utility model is that the liquid cooling plate and the horizontal surface (the surface with the largest area) of the block battery pack are in contact with each other to dissipate heat, which can transfer the heat of the block battery pack to the liquid cooling plate to the maximum extent. Compared with heat dissipation by contacting the side of the block battery pack, it can improve the heat dissipation effect.

[0018] Advantages of the present invention in additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1This is a schematic diagram of the structure of a liquid cooling plate with a scaling flow channel provided in an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional schematic diagram of a liquid cooling plate with a scaling flow channel provided for an embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the flow channel provided in an embodiment of the present utility model.

[0023] Figure 4 This is an exploded structural diagram of the battery pack provided in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the block battery pack provided in an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the block battery provided in an embodiment of the present invention.

[0026] In the diagram, 1 is the housing; 2 is the liquid cooling plate; 201 is the water inlet; 202 is the water outlet; 203 is the main body of the liquid cooling plate; 204 is the main water inlet pipe; 205 is the main water outlet pipe; 206 is the flow channel; 3 is the block battery pack; 301 is the negative electrode; 302 is the main body of the block battery; 3021 is the blade cell; 303 is the positive electrode; a is the straight pipe; b is the arc-shaped expansion pipe. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] Example 1 Combination Figures 1-3 This utility model proposes a liquid cooling plate 2 with a scaling cooling structure. The liquid cooling plate 2 includes a liquid cooling plate body 203, which is a rectangular structure. One end of the liquid cooling plate body 203 along the width direction has a water inlet 201, and the other end along the width direction has a water outlet 202. The water inlet 201 is connected to a water inlet manifold 204, which is located inside the liquid cooling plate body 203. The water outlet 202 is connected to a water outlet manifold 205, which is located inside the liquid cooling plate body 203. The water inlet 201 is located in the middle of the water inlet manifold 204, and the water outlet 202 is located in the middle of the water outlet manifold 205.

[0030] A flow channel 206 connects the inlet main pipe 204 and the outlet main pipe 205. The flow channel 206 includes multiple straight pipes a and multiple arc-shaped expansion pipes b. The straight pipes a and arc-shaped expansion pipes b are arranged alternately and are connected. The straight pipes a located at both ends of the flow channel 206 are connected to the inlet main pipe 204 and the outlet main pipe 205, respectively.

[0031] Specifically, the arc-shaped expansion pipe b can be a spherical pipe or a rugby ball-shaped pipe, combined with... Figure 3 In this embodiment, the flow channel 206 is composed of interlaced pipe sections of different sizes. The straight pipe a is also called the shrinking pipe section, and the arc-shaped expanding pipe b is also called the expanding pipe section. The diameter of the straight pipe a is smaller than the maximum diameter of the arc-shaped expanding pipe b. Figure 3 In the middle, along the direction of coolant delivery, the shrinking pipe section and the expanding pipe section form an inverted gourd-shaped flow channel 206. The coolant can form a decelerating turbulent flow in the inverted gourd-shaped flow channel 206, which can absorb the heat of the battery pack for as long as possible. The expanding pipe section and the next shrinking pipe section form a gourd-shaped flow channel 206. According to Bernoulli's principle, the coolant in this section of the flow channel 206 will accelerate its flow and can quickly carry away the heat previously absorbed.

[0032] Furthermore, there are multiple flow channels 206, which are spaced apart, and each flow channel 206 is connected to the inlet main pipe 204 and the outlet main pipe 205 at both ends.

[0033] The coolant enters from the inlet 201 of the liquid cooling plate 2, and then is distributed to each flow channel 206 through the main inlet pipe 204. After the flow channel 206 fully absorbs the heat of the battery, the coolant enters the main outlet pipe 205, and flows out from the outlet 202 of the liquid cooling plate 2, completing a heat absorption and cooling process of the liquid cooling plate 2.

[0034] Furthermore, the liquid cooling plate body 203 is a rectangular structure that matches the block battery pack 3, so as to be installed above and below the block battery pack 3 and to fit in close contact with the block battery pack 3 over a large area, thereby improving the heat dissipation effect and enabling rapid cooling and equalization of the battery.

[0035] Example 2 Combination Figures 4-5 Based on the liquid cooling plate 2 with the scaling cooling structure described above, this embodiment provides a battery pack, which includes the liquid cooling plate 2 with the scaling cooling structure and a housing 1. The liquid cooling plate 2 with the scaling cooling channel 206 is horizontally installed inside the housing 1. Since the liquid cooling plate 2 with the scaling cooling structure has the above-mentioned technical effects, the technical effects of the battery pack using the liquid cooling plate 2 with the scaling cooling structure are described in the above embodiment.

[0036] Furthermore, a horizontally arranged block battery pack 3 is installed inside the housing 1, and a liquid cooling plate 2 with a scaling structure flow channel 206 is installed above and below the block battery pack 3 respectively.

[0037] Based on this, by bonding the liquid cooling plate 2 to the largest surface of the block battery pack 3 over a large area, the battery can be cooled and its temperature equalized quickly, and the large-area bonding has a better heat dissipation effect.

[0038] Furthermore, the block battery pack 3 has a positive electrode 303, a negative electrode 301, and a block battery body 302. The block battery body 302 includes multiple stacked block batteries, and the block batteries include multiple blade cells 3021, which are arranged horizontally.

[0039] The block battery pack 3 has a compact structure, which can increase the volumetric energy density of the power battery pack. In this embodiment, only the placement of the blade cell 3021 is changed, and no other structural or electrical connection methods of the block battery pack 3 are improved, so they will not be described in detail here.

[0040] Here, the flat placement allows the large surface of the blade cell 3021 to directly contact the liquid cooling plate 2, maximizing the heat dissipation area and coefficient, and maximizing the transfer of heat to the liquid cooling plate 2. The liquid cooling plate 2 has a flow channel 206 for rapid heat absorption and transfer, which can efficiently remove the heat from the block battery pack 3.

[0041] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A liquid-cooled plate with a scaling cooling structure, characterized in that, It includes a liquid cooling plate body, the inlet of which is connected to a main water inlet pipe, and the outlet of which is connected to a main water outlet pipe; A flow channel connects the inlet main pipe and the outlet main pipe. The flow channel includes multiple straight pipes and multiple arc-shaped extension pipes. The straight pipes and the arc-shaped extension pipes are arranged alternately and are connected to form a gourd-shaped flow channel or an inverted gourd-shaped flow channel.

2. The liquid-cooled plate with a scaling cooling structure as described in claim 1, characterized in that, The arc-shaped expansion pipe is a spherical pipe or a rugby ball-shaped pipe.

3. The liquid-cooled plate with a scaling cooling structure as described in claim 1, characterized in that, The number of flow channels is multiple, and the spacing between the multiple flow channels is set.

4. The liquid-cooled plate with a scaling cooling structure as described in claim 1, characterized in that, The liquid cooling plate body is a rectangular structure that matches the block-shaped battery pack.

5. The liquid-cooled plate with a scaling cooling structure as described in claim 1, characterized in that, Both the inlet manifold and the outlet manifold are located inside the liquid cooling plate body.

6. The liquid-cooled plate with a scaling cooling structure as described in claim 1, characterized in that, The diameter of the straight pipe is smaller than the maximum diameter of the arc-shaped extended pipe.

7. A battery pack, characterized in that, The liquid cooling plate and housing with a scaling cooling structure as described in any one of claims 1-6 are included, wherein the liquid cooling plate with the scaling cooling structure is horizontally disposed inside the housing.

8. The battery pack as described in claim 7, characterized in that, The housing contains a horizontally arranged block battery pack, and the liquid cooling plates with scaling cooling structures are respectively arranged above and below the block battery pack.

9. The battery pack as described in claim 8, characterized in that, The block battery pack comprises multiple stacked block batteries.

10. The battery pack as claimed in claim 9, characterized in that, The block battery includes multiple blade cells, which are arranged horizontally.

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