Liquid cooling heat dissipation device and energy storage battery module with same

Abstract

This invention relates to a liquid cooling heat dissipation device and an energy storage battery module having the same, comprising a four-way valve and a flow guiding assembly. The four-way valve includes a first chamber, a second chamber, a third chamber, and a fourth chamber. A main water inlet is provided in the first chamber, and a main water outlet is provided in the third chamber. The first and fourth chambers are connected, as are the second and third chambers. A first water inlet is provided in the first chamber, and a first water return outlet is provided in the second chamber. A second water inlet is provided in the fourth chamber, and a second water return outlet is provided in the third chamber. The flow guiding assembly includes a first flow guiding channel and a second flow guiding channel. The first flow guiding channel includes a first flow guiding inlet and a first flow guiding outlet, and the second flow guiding channel includes a second flow guiding inlet and a second flow guiding outlet. The flow guiding assembly for cooling is no longer located at the bottom of the energy storage battery, does not require load-bearing, can reduce the wall thickness of the flow guiding assembly, reduce the space occupied, and thus increase the energy density of the energy storage battery.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and in particular to a liquid cooling heat dissipation device and an energy storage battery module having the same. Background Technology

[0002] With the development of technology, large-scale energy storage technology has many advantages in the energy storage industry, such as ease of use, energy saving and environmental protection, and is therefore increasingly being used in various production and living scenarios.

[0003] Due to their large size, large energy storage batteries have certain requirements in terms of space utilization and heat dissipation. Currently, for large energy storage batteries, liquid cooling plates are installed at the bottom to dissipate heat. However, this heat dissipation method has the following main disadvantages:

[0004] 1. Since the liquid cooling plate is located at the bottom of the energy storage battery, it needs to be able to support the weight of the energy storage battery. Therefore, after meeting the load-bearing requirements, the thickness of the liquid cooling plate will increase, occupying a large amount of internal space, reducing the energy density, and also reducing the heat dissipation effect.

[0005] 2. Due to the weight and space constraints of large energy storage batteries, only one flow channel can be set inside the liquid cooling plate. Large-size single-layer flow channel profiles are required to meet the requirements, which increases the difficulty of the process.

[0006] 3. Due to the use of a single-layer flow channel, the coolant enters from the inlet and exits from the outlet. During the entire process, the temperature of the coolant increases, which results in a lower temperature near the inlet and a higher temperature near the outlet, leading to uneven temperatures in the energy storage battery and affecting its service life. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a liquid cooling heat dissipation device and an energy storage battery having the same, which does not affect space utilization and can improve heat dissipation effect.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: a liquid cooling heat dissipation device, including a four-way valve and a flow guiding assembly connected to the four-way valve. The four-way valve includes a first chamber, a second chamber, a third chamber, and a fourth chamber. A main water inlet is provided on the first chamber, and a main water outlet is provided on the third chamber. The first chamber and the fourth chamber are connected, and the second chamber and the third chamber are connected. A first water inlet is provided on the first chamber, and a first water return outlet is provided on the second chamber. A second water inlet is provided on the fourth chamber, and a second water return outlet is provided on the third chamber. The flow guiding assembly includes a first flow guiding channel and a second flow guiding channel. The first flow guiding channel includes a first flow guiding inlet connected to the first water inlet and a first flow guiding outlet connected to the first water return outlet. The second flow guiding channel includes a second flow guiding inlet connected to the second water inlet and a second flow guiding outlet connected to the second water return outlet.

[0009] More specifically, the flow guiding component includes a rectangular shell, and a baffle is provided inside the shell to divide the interior of the shell into a first cavity and a second cavity. The first flow guiding channel is disposed in the first cavity, and the second flow guiding channel is disposed in the second cavity.

[0010] More specifically, the first and second guide channels have the same structure, and the coolant flows in opposite directions in the first and second guide channels and achieves heat exchange through baffles.

[0011] More specifically, the first cavity is provided with an intermediate partition, an inlet partition located on one side of the intermediate partition, a return partition located on the other side of the intermediate partition, and a connecting partition. There are an even number of inlet partitions and an even number of return partitions.

[0012] The connecting partition connects the intermediate partition, the even-numbered inlet partitions, and the even-numbered return partitions. The intermediate partition, the odd-numbered inlet partitions, and the odd-numbered return partitions are all connected to one side of the inner wall of the first cavity. The first flow guide inlet is located between the intermediate partition and the first inlet partition, and the first flow guide outlet is located between the intermediate partition and the first return partition. A channel is formed between the connecting partition and the other side of the inner wall of the first flow guide channel. The inlet partitions and return partitions are counted in order from closest to the intermediate partition to furthest from the intermediate partition.

[0013] More specifically, there are two inlet baffles and two return baffles, and both the inlet baffles and the return baffles are distributed in a mirror image with the middle baffle as the center.

[0014] More specifically, the four-way valve is a cuboid with a hollow cavity inside. A first partition and a second partition are arranged inside the hollow cavity. A third partition and a fourth partition are arranged between the first partition and the second partition. The first partition, the second partition, the third partition and the fourth partition form a flow guiding chamber. A fifth partition and a sixth partition are arranged inside the flow guiding chamber. The fifth partition and the sixth partition are intersecting and divide the flow guiding chamber into the first chamber, the second chamber, the third chamber and the fourth chamber.

[0015] More specifically, a first groove, a second groove, a third groove, and a fourth groove are provided on the fifth or sixth partition plate. The fifth or sixth partition plate includes a first surface and a second surface arranged opposite to each other. The first groove and the second groove are disposed on the first surface and staggered, and the third groove and the fourth groove are disposed on the second surface and staggered. The first groove and the second groove on the first surface are staggered with the third groove and the fourth groove on the second surface. A water inlet channel communicating with the fourth groove is opened at the position of the first groove near the fourth groove, and a water return channel communicating with the third groove is opened at the position of the second groove near the third groove. The first groove is disposed in the first chamber, the second groove is disposed in the second chamber, the third groove is disposed in the third chamber, and the fourth groove is disposed in the fourth chamber.

[0016] More specifically, a water inlet channel is formed between the first partition and the inner wall of the hollow cavity on the side away from the flow guide chamber, and a water return channel is formed between the second partition and the inner wall of the hollow cavity on the side away from the flow guide chamber.

[0017] More specifically, there are two first water inlets, two opposite water inlets, two first return water inlets, and two opposite return water inlets; there are two flow guiding components located on both sides of the four-way valve.

[0018] More specifically, thermal insulation material is filled between the first and second partitions on the outer side of the flow guide chamber.

[0019] An energy storage battery module includes a plurality of individual energy storage batteries, which are divided into at least two groups, with each group of energy storage batteries abutting against any side of the flow guiding component in the liquid cooling heat dissipation device described above.

[0020] The beneficial effects of this invention are as follows: After adopting the above structure, the cooling guide component is no longer located at the bottom of the energy storage battery, and it does not need to support the weight of the energy storage battery. This reduces the wall thickness of the guide component and its space occupation, thereby increasing the energy density of the energy storage battery. At the same time, without supporting the weight, there are more options for the materials and processing technology of the guide component. Through the setting of two layers of guide components, the liquids in the two layers of guide components exchange heat, which can ensure that the temperature difference between the liquids is relatively small and ensure that the temperature of the energy storage battery is uniform. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the liquid cooling heat dissipation device of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the four-way valve of the present invention. Figure 1 ;

[0023] Figure 3 yes Figure 2 Enlarged structural diagram of the X-section;

[0024] Figure 4 This is a schematic diagram of the structure of the four-way valve of the present invention. Figure 2 ;

[0025] Figure 5 yes Figure 4 A magnified structural diagram of the Y-section in the middle;

[0026] Figure 6 This is a top view of the four-way valve of the present invention;

[0027] Figure 7 yes Figure 6 A cross-sectional view of the EE section;

[0028] Figure 8 yes Figure 6 A cross-sectional view of the FF section;

[0029] Figure 9 yes Figure 6 A schematic diagram of the cross-sectional structure of the GG section;

[0030] Figure 10 yes Figure 9 A magnified structural diagram of the Z-section in the middle;

[0031] Figure 11 This is a schematic diagram of the flow guiding component of the present invention;

[0032] Figure 12 This is a top view of the flow guiding component of the present invention;

[0033] Figure 13 yes Figure 12A schematic diagram of the cross-sectional structure of the middle HH section;

[0034] Figure 14 This is a schematic diagram of the energy storage battery module of the present invention.

[0035] In the diagram: 100, Four-way valve; 101, First chamber; 102, Second chamber; 103, Third chamber; 104, Fourth chamber; 105, Main inlet; 106, Main outlet; 107, First inlet; 108, First return inlet; 109, Second return inlet; 110, Second inlet; 111, First baffle; 112, Second baffle; 113, Third baffle; 114, Fourth baffle; 115, Fifth baffle; 116, Sixth baffle; 117, First groove; 118, Second groove; 119, Third groove; 120, Fourth groove; 121, Return water passage; 122, Inlet channel; 123, Return channel; 124, Inlet connector; 125, Return connector; 126, Gap; 127. Supporting cavity; 128. Reinforcing rib;

[0036] 200. Flow guiding assembly; 201. Front panel; 202. Top panel; 203. Bottom panel; 204. Left side panel; 205. Right side panel; 206. First flow guiding inlet; 207. First flow guiding outlet; 208. Second flow guiding outlet; 209. Second flow guiding inlet; 210. Baffle; 211. Intermediate partition; 212. First water inlet baffle; 213. Second water inlet baffle; 214. First water return baffle; 215. Second water return baffle; 216. Connecting baffle; 217. First water inlet baffle; 218. Second water inlet baffle; 219. Third water inlet baffle; 220. First water return baffle; 221. Second water return baffle; 222. Third water return baffle;

[0037] 300. Energy storage battery. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0041] like Figures 1-14 The liquid cooling heat dissipation device shown includes a four-way valve 100 and a flow guiding assembly 200 connected to the four-way valve 100. The four-way valve 100 includes a first chamber 101, a second chamber 102, a third chamber 103, and a fourth chamber 104. A main water inlet 105 is provided on the first chamber 101, and a main water outlet 106 is provided on the third chamber 103. The first chamber 101 communicates with the fourth chamber 104, and the second chamber 102 communicates with the third chamber 103. A first water inlet 107 is provided on the first chamber 101, and a flow guiding assembly 200 is provided on the second chamber 103. A first return water inlet 108 is provided on the 02; a second inlet 110 is provided on the fourth chamber 104; and a second return water inlet 109 is provided on the third chamber 103. The flow guiding assembly 200 includes a first flow guiding channel and a second flow guiding channel. The first flow guiding channel includes a first flow guiding inlet 206 connected to the first inlet 107 and a first flow guiding outlet 207 connected to the first return water inlet 108. The second flow guiding channel includes a second flow guiding inlet 209 connected to the second inlet 110 and a second flow guiding outlet 208 connected to the second return water inlet 109.

[0042] The coolant first enters the first chamber 101 through the main inlet 105 on the four-way valve 100. Since the first chamber 101 is connected to the fourth chamber 104, the coolant enters the fourth chamber 104 through the first chamber 101. The coolant in the first chamber 101 enters the first guide channel through the first inlet 107 and the first guide inlet 206 to cool the energy storage battery 300 that is in close contact with the first guide channel. The coolant completes circulation in the first guide channel, and then enters the second chamber 102 from the first guide outlet 207 and the first return outlet 108. The second chamber 102 is connected to the third chamber 103. Coolant enters the third chamber 103 and exits from the main outlet 106 on the third chamber 103. At the same time, the coolant in the fourth chamber 104 enters the second guide channel through the second inlet 110 and the second guide inlet 209 to cool the energy storage battery 300 that is in close contact with the second guide channel. The coolant completes circulation in the second guide channel and then enters the third chamber 103 from the second guide outlet 208 and the second return outlet 109. The coolant is then exited from the main outlet 106 on the third chamber 103.

[0043] Based on the above structure, as a further embodiment of this solution, such as Figures 2-10 The four-way valve 100 shown is a cuboid with an internal hollow cavity. A first partition 111 and a second partition 112 are vertically and parallelly arranged inside the hollow cavity. A third partition 113 and a fourth partition 114 are arranged between the first partition 111 and the second partition 112, and are parallel to each other. The first partition 111, the second partition 112, the third partition 113, and the fourth partition 114 form a flow guiding chamber. A fifth partition 115 and a sixth partition 116 are arranged within this flow guiding chamber. The fifth partition 115 is located between the third partition 113 and the fourth partition 114 and is parallel to the first partition 111. The sixth partition 116 is located between the first partition 111 and the second partition 112 and is parallel to the third partition 113. Figure 10 The fifth partition 115 and the sixth partition 116 shown divide the flow guiding chamber into a first chamber 101 located at the upper rear corner, a second chamber 102 located at the lower rear corner, a third chamber 103 located at the upper front corner, and a fourth chamber 104 located at the lower front corner.

[0044] To further facilitate communication between the first chamber 101 and the fourth chamber 104, and between the second chamber 102 and the third chamber 103, a first groove 117, a second groove 118, a third groove 119, and a fourth groove 120 are provided on the fifth partition 115 or the sixth partition 116. In this design, they are provided on the fifth partition 115. The following description focuses on the first groove 117, the second groove 118, the third groove 119, and the fourth groove 120 being provided on the fifth partition 115.

[0045] The fifth partition 115 includes a first surface and a second surface disposed opposite to each other. The first surface is located on one side of the first chamber 101 and the second chamber 102, and the second surface is located on one side of the third chamber 103 and the fourth chamber 104. Figure 7 The first surface is divided into four regions: A1, A2, A3, and A4. Region A1 corresponds to the upper left part of the first surface, region A2 corresponds to the upper right part, region A3 corresponds to the lower left part, and region A4 corresponds to the lower right part. Figure 8 The second surface is also divided into four regions: B1, B2, B3, and B4. Region B1 is opposite to region A1 (i.e., the back of region A1 is region B1), region B2 is opposite to region A2 (i.e., the back of region A2 is region B2), region B3 is opposite to region A3 (i.e., the back of region A3 is region B3), and region B4 is opposite to region A4 (i.e., the back of region A4 is region B4). Regions A1 and A2 are separated from regions A3 and A4 by a sixth partition 116, as are regions B1 and B2 and regions B3 and B4 by the same partition 116. Regions A1 and A2 are simultaneously located within the first chamber 101, and regions A3 and A4 are simultaneously located within the first chamber 101. Within the second chamber 102, areas B1 and B2 are simultaneously located within the third chamber 103, and areas B3 and B4 are simultaneously located within the fourth chamber 104. The first groove 117 is located in area A2, the second groove 118 is located in area A3, the third groove 119 is located in area B1, and the fourth groove 120 is located in area B4. That is, the first groove 117 and the second groove 118 are staggered on the first surface, the third groove 119 and the fourth groove 120 are staggered on the second surface, and the first groove 117 and the second groove 118 on the first surface and the third groove 119 and the fourth groove 120 on the second surface are staggered on different surfaces.

[0046] A water inlet passage is provided in the first groove 117 near the fourth groove 120. This water inlet passage passes through the sixth partition 116 and connects the first chamber 101 and the fourth chamber 104. Figure 10 As shown, a water return passage 121 is provided in the second groove 118 near the third groove 119. The water return passage 121 passes through the sixth partition 116 and connects the second chamber 102 and the third chamber 103.

[0047] like Figure 2 , Figure 4 ,as well as Figure 9As shown, a water inlet channel 122 is formed between the first partition 111 and the inner wall of the hollow cavity on the side away from the flow guiding chamber, and a water return channel 123 is formed between the second partition 112 and the inner wall of the hollow cavity on the side away from the flow guiding chamber. A water inlet connector 124 is provided at the top of the water inlet channel 122 for receiving external coolant input, and a water return connector 125 is provided at the top of the water return channel 123 for outputting coolant to the outside. The main water inlet 105 is connected to the water inlet channel 122, and the main water outlet 106 is connected to the water return channel 123. The gap 126 between the first partition 111 and the second partition 112 on the outer side of the flow guiding chamber is filled with thermal insulation material to separate the water inlet channel 122 and the water return channel 123, ensuring that the coolant does not undergo heat exchange before entering the flow guiding assembly 200.

[0048] A support cavity 127 is provided next to the water inlet channel 122 and the water return channel 123, and a number of reinforcing ribs 128 with different inclination angles are provided in the support cavity 127; the four-way valve 100, the support cavity 127 and the reinforcing ribs 128 can be integrally formed from plastic material.

[0049] like Figure 11-13 The flow guiding component 200 shown includes a rectangular shell, the external shape of which can be various and can be individually designed according to the side shape of the energy storage battery 300; the length and width of the cuboid are much greater than its thickness. The shell mainly includes a front panel 201, a rear panel, a top panel 202 disposed at the top of the front panel 201 and the rear panel, a bottom panel 203 disposed at the bottom of the front panel 201 and the rear panel, and a left side panel 204 and a right side panel 205 disposed on both sides of the front panel 201 and the rear panel. The top panel 202, bottom panel 203, left side panel 204, and right side panel 205 are... 5. Along the thickness direction, the front panel 201 is parallel to the rear panel, the top panel 202 is parallel to the bottom panel 203, and the left panel 204 is parallel to the right panel 205; the first flow inlet 206 and the first flow outlet 207 of the first flow channel are located on the left panel 204; a baffle 210 is provided inside the shell, which is located between the front panel 201 and the rear panel and is parallel to the front panel 201. The baffle 210 divides the inside of the shell into a first cavity and a second cavity. The first flow channel is located in the first cavity, and the second flow channel is located in the second cavity.

[0050] To ensure that the coolant in the first and second cavities can effectively cool the energy storage battery 300, the orientation of the first flow channel in the first cavity and the second flow channel in the second cavity needs to be designed. The first and second flow channels have the same structure, and the coolant flows in opposite directions in the first and second flow channels, enabling heat exchange through the baffle 210. This ensures that the temperature difference of the coolant is small and guarantees the overall temperature uniformity of the energy storage battery 300. The internal structure of the first flow channel will be described in detail below.

[0051] A middle partition 211 is provided in the first cavity. The middle partition 211 is parallel to the top panel 202 and the bottom panel 203. The middle partition 211 divides the first cavity into a water inlet chamber and a water return chamber. A water inlet baffle is provided in the water inlet chamber and a water return baffle is provided in the water return chamber. A connecting partition 216 is also provided. The connecting partition 216 extends into both the water inlet chamber and the water return chamber. There are an even number of water inlet baffles and an even number of water return baffles.

[0052] The connecting partition 216 connects the middle partition 211, the even-numbered water inlet partitions, and the even-numbered water return partitions, forming a channel between the connecting partition 216 and the right side panel 205. The middle partition 211, the odd-numbered water inlet partitions, and the odd-numbered water return partitions are all connected to the left side panel 204. The first flow guide inlet 206 is located between the middle partition 211 and the first water inlet partition, and the first flow guide outlet 207 is located between the middle partition 211 and the first water return partition. The water inlet partitions and water return partitions are counted in order from closest to the middle partition 211 to furthest from the middle partition 211. The configuration can be selected according to the size of the specific housing.

[0053] The following details the situation with a total of 2 inlet baffles and 2 return baffles.

[0054] At this time, the inlet baffles are the first inlet baffle 212 and the second inlet baffle 213; the return baffles are the first return baffle 214 and the second return baffle 215; the intermediate baffle 211 is located in the center of the first cavity, and the inlet baffles and return baffles are mirror images of each other with the intermediate baffle 211 as the center; the left end of the intermediate baffle 211 is connected to the left side panel 204, and the right end of the intermediate baffle 211 is connected to the connecting baffle 216; the left end of the first inlet baffle 212 is connected to the left side panel 204, and the right end of the first inlet baffle 212 forms a first inlet baffle 217 between the connecting baffle 216 and the connecting baffle 212; the left end of the second inlet baffle 213 is connected to the left side panel 204. A second water inlet baffle 218 is formed between the top and bottom panels 202. The right end of the second water inlet baffle 213 is connected to the top end of the connecting baffle 216. A third water inlet baffle 219 is formed between the top end of the connecting baffle 216 and the top panel 202. The left end of the first return water baffle 214 is connected to the left panel 204. A first return water baffle 220 is formed between the right end of the first return water baffle 214 and the connecting baffle 216. A second return water baffle 221 is formed between the left end of the second return water baffle 215 and the left panel 204. The right end of the second return water baffle 215 is connected to the bottom end of the connecting baffle 216. A third return water baffle 222 is formed between the bottom end of the connecting baffle 216 and the bottom panel 203.

[0055] The coolant flows as follows: It enters from the first guide inlet 206 between the first inlet baffle 212 and the middle baffle 211, and flows laterally to the right to the first inlet deflector 217. After passing through the first inlet deflector 217, the coolant changes its flow direction from right to left and enters between the first inlet baffle 212 and the second inlet baffle 213. The coolant then flows laterally to the left to the second inlet deflector 218, changes direction again, and flows laterally to the right. It then passes through the guide of the second inlet baffle 213 and the top panel 202 to enter the third inlet deflector 219. Here, the coolant changes its flow direction from laterally to the right to vertically downwards, passing through the connecting baffle 216 and the right side panel 202. The coolant flows through the channel between 05 to the third return water deflector 222. The third return water deflector 222 changes the flow direction of the coolant from vertical downward to horizontal left. It then flows through the channel between the second return water baffle 215 and the bottom panel 203 to the second return water deflector 221. At the second return water deflector 221, the coolant flows horizontally to the right. It then flows through the channel between the first return water baffle 214 and the second return water baffle 215 to the first return water deflector 220. At the first return water deflector 220, the coolant flows horizontally to the left. It then flows through the channel between the first return water baffle 214 and the middle baffle 211 to the first guide outlet 207, thus achieving cooling circulation.

[0056] The first flow inlet 206 of the first flow channel is located above the intermediate partition 211, and the first flow outlet 207 is located below the intermediate partition 211. In order to ensure that the coolant flow direction in the first flow channel and the second flow channel is opposite, the second flow inlet 209 of the second flow channel is located below the intermediate partition 211, and the second flow outlet 208 is located above the intermediate partition 211.

[0057] Based on the above structure, the four-way valve 100 can be positioned in the middle. A flow guiding component 200 is provided on both sides of the four-way valve 100, namely, flow guiding component C and second flow guiding component D. The four-way valve 100 has two first inlets 107 arranged opposite each other, namely, first inlet C and first inlet D; two second inlets 110 arranged opposite each other, namely, second inlet C and second inlet D; two first return inlets 108 arranged opposite each other, namely, first return inlet C and first return inlet D; and two second return inlets 109 arranged opposite each other, namely, second return inlet C and second return inlet D. The flow guiding component C is respectively connected to the first inlet C, first return inlet C, second inlet C, and second return inlet C; the flow guiding component D is respectively connected to the first inlet D, first return inlet D, second inlet D, and second return inlet D.

[0058] like Figure 14 The liquid cooling heat dissipation device described above is applied to a large energy storage battery to form an energy storage battery module. The energy storage battery module includes a plurality of energy storage batteries 300, and there are at least two groups of the plurality of energy storage batteries 300. Each group of energy storage batteries 300 abuts against the liquid cooling heat dissipation device. In this solution, there are four groups of energy storage batteries 300 and two groups of current guiding components 200. The four groups of energy storage batteries 300 abut against the two groups of current guiding components 200 respectively.

[0059] In summary, with the above structure, the cooling guide component 200 is no longer located at the bottom of the energy storage battery 300, and does not need to support the weight of the energy storage battery 300. This allows for a reduction in the wall thickness of the guide component 200, reducing its space occupation and thus increasing the energy density of the energy storage battery 300. At the same time, the elimination of the weight-bearing component allows for more choices in the materials and processing technology of the guide component 200. Through the setting of two layers of guide channels, the liquids in the two layers of guide channels exchange heat, ensuring that the temperature deviation between the liquids is relatively small and ensuring that the temperature of the energy storage battery 300 is uniform.

[0060] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A liquid cooling heat dissipation device, characterized in that, The device includes a four-way valve (100) and a flow guide assembly (200) connected to the four-way valve (100). The four-way valve (100) includes a first chamber (101), a second chamber (102), a third chamber (103), and a fourth chamber (104). A main inlet (105) is provided on the first chamber (101), and a main outlet (106) is provided on the third chamber (103). The first chamber (101) is connected to the fourth chamber (104), and the second chamber (102) is connected to the third chamber (103). A first inlet (107) is provided on the first chamber (101), and a flow guide assembly (200) is provided on the second chamber (102). 2) A first return water inlet (108) is provided on the upper part; a second inlet (110) is provided on the fourth chamber (104), and a second return water inlet (109) is provided on the third chamber (103); the flow guiding assembly (200) includes a first flow guiding channel and a second flow guiding channel. The first flow guiding channel includes a first flow guiding inlet (206) connected to the first inlet (107) and a first flow guiding outlet (207) connected to the first return water inlet (108). The second flow guiding channel includes a second flow guiding inlet (209) connected to the second inlet (110) and a second flow guiding outlet (208) connected to the second return water inlet (109). The flow guiding assembly (200) includes a rectangular shell, and a baffle (210) is provided inside the shell to divide the interior of the shell into a first cavity and a second cavity. The first flow guiding channel is provided in the first cavity and the second flow guiding channel is provided in the second cavity. The four-way valve (100) is a cuboid with a hollow cavity inside. A first partition (111) and a second partition (112) are provided in the hollow cavity. A third partition (113) and a fourth partition (114) are provided between the first partition (111) and the second partition (112). The first partition (111), the second partition (112), the third partition (113) and the fourth partition (114) form a flow guiding chamber. A fifth partition (115) and a sixth partition (116) are provided in the flow guiding chamber. The fifth partition (115) and the sixth partition (116) are intersecting and divide the flow guiding chamber into the first chamber (101), the second chamber (102), the third chamber (103) and the fourth chamber (104). A first groove (117), a second groove (118), a third groove (119), and a fourth groove (120) are provided on the fifth partition (115) or the sixth partition (116). The fifth partition (115) or the sixth partition (116) includes a first surface and a second surface disposed opposite to each other. The first groove (117) and the second groove (118) are disposed on the first surface and staggered, and the third groove (119) and the fourth groove (120) are disposed on the second surface and staggered; the first groove (117) and the second groove (118) on the first surface are staggered with the third groove (119) and the fourth groove (120) on the second surface; a water inlet channel communicating with the fourth groove (120) is opened at the position of the first groove (117) near the fourth groove (120), and a water return channel (121) communicating with the third groove (119) is opened at the position of the second groove (118) near the third groove (119); the first groove (117) is disposed in the first chamber (101), the second groove (118) is disposed in the second chamber (102), the third groove (119) is disposed in the third chamber (103), and the fourth groove (120) is disposed in the fourth chamber (104).

2. The liquid cooling heat dissipation device according to claim 1, characterized in that, The first and second guide channels have the same structure. The coolant flows in opposite directions in the first and second guide channels and achieves heat exchange through the baffle (210).

3. The liquid cooling heat dissipation device according to claim 2, characterized in that, The first cavity is provided with an intermediate partition (211), an inlet partition on one side of the intermediate partition (211), a return partition on the other side of the intermediate partition (211), and a connecting partition (216). There are an even number of inlet partitions and an even number of return partitions. The connecting partition (216) connects the intermediate partition (211), the even-numbered water inlet partitions, and the even-numbered water return partitions. The intermediate partition (211), the odd-numbered water inlet partitions, and the odd-numbered water return partitions are all connected to one side of the inner wall of the first cavity. The first flow guide inlet (206) is located between the intermediate partition (211) and the first water inlet partition, and the first flow guide outlet (207) is located between the intermediate partition (211) and the first water return partition. A channel is formed between the connecting partition (216) and the other side of the inner wall of the first flow guide channel. The water inlet partitions and the water return partitions are counted in order from the closest to the intermediate partition (211) to the furthest from the intermediate partition (211).

4. The liquid cooling heat dissipation device according to claim 3, characterized in that, The number of inlet baffles is 2, the number of return baffles is 2, and the inlet baffles and return baffles are mirror-distributed with the middle baffle (211) as the center.

5. The liquid cooling heat dissipation device according to claim 1, characterized in that, A water inlet channel (122) is formed between the first partition (111) and the inner wall of the hollow cavity on the side away from the flow guide chamber, and a water return channel (123) is formed between the second partition (112) and the inner wall of the hollow cavity on the side away from the flow guide chamber.

6. The liquid cooling heat dissipation device according to claim 1, characterized in that, Two first water inlets (107) are provided and are positioned opposite each other; two second water inlets (110) are provided and are positioned opposite each other; two first return water inlets (108) are provided and are positioned opposite each other; two second return water inlets (109) are provided and are positioned opposite each other; two flow guiding components (200) are provided and are located on both sides of the four-way valve (100).

7. The liquid cooling heat dissipation device according to claim 1, characterized in that, Insulating material is filled between the first partition (111) and the second partition (112) on the outer side of the flow guide chamber.

8. An energy storage battery module, comprising a plurality of energy storage batteries (300), characterized in that, The energy storage batteries (300) are divided into at least two groups, and each group of energy storage batteries (300) abuts against any side of the flow guiding component (200) in the liquid cooling heat dissipation device according to any one of claims 1-7.

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