Liquid cooling plate with staggered parallel structure

Abstract

The invention discloses a liquid cooling plate with a staggered parallel structure. The liquid cooling plate can be applied to a thermal management module in a new energy automobile. The liquid cooling plate with the staggered parallel structure comprises a first plate group and a second plate group, the first plate group and the second plate group are clamped, the first liquid cooling plates and the second liquid cooling plates are arranged in a pairwise staggered manner, and meanwhile, the first flow channels and the second flow channels are not communicated with each other. According to the liquid cooling plate device, the heat exchange efficiency of the side part of the battery unit is remarkably improved, and the cooling time is greatly shortened. And meanwhile, on the premise that the heat exchange efficiency is high, the heat exchanger further has extremely high structural compactness. Therefore, the heat management module of the new energy automobile has remarkable application advantages in application environments with high requirements on the size, the installation space and the compactness, such as the heat management module of the new energy automobile.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cooling, and in particular to a liquid cooling plate with a staggered parallel structure. Background Art

[0002] As the core component of new energy vehicles, battery modules generate a lot of heat during operation, and it is necessary to design corresponding thermal management solutions to control and optimize heat transfer through heat dissipation modules. For battery modules, the conventional solution is to place a liquid cooling plate at the bottom of the battery module, and heat and cool the entire battery through conduction of the battery cell itself. However, this method will cause the entire module to be cooled first at the bottom when in operation, and the cooling and heat exchange between the middle and top are slow, and the heat dissipation efficiency is low.

[0003] At present, the battery module side cooling assembly can be used to solve the above problems. These cooling assemblies usually have multiple vertical and parallel liquid cooling plates. When the battery is loaded into the cooling assembly, the liquid cooling plate is attached to the side of each battery cell, so as to cool the side position of the battery module and make the overall temperature rise of the battery cell tend to be consistent. Its water cooling structure and principle are basically as follows: a water inlet main pipe is set at the water inlet position of the component, and a liquid cooling branch is passed through each liquid cooling plate, and a water outlet main pipe is set at the water outlet position of the component. The water inlet main pipe is connected to each liquid cooling branch at the same time, and each liquid cooling branch forms a parallel relationship, so that the coolant on the main road is diverted to the branches of each liquid cooling plate. The coolant coming out of each branch is re-collected into the water outlet main pipe for final unified output.

[0004] Existing battery module side cooling components basically adopt the above-mentioned parallel structure to perform liquid cooling on the sides of each battery cell in the battery pack. Although such a parallel structure can arrange the coolant more evenly in each liquid cooling plate, due to the large number of liquid cooling plates, the amount of coolant diverted to each branch is limited. Due to the limitations of pipeline structure design and use cost, the coolant supply is often certain. Therefore, for each liquid cooling plate, its cooling effect is limited, resulting in limited overall cooling efficiency of the component; at the same time, since the coolant flowing out of each branch will be uniformly collected into a main water outlet, and the coolant in each branch fully absorbs the heat, the temperature of the coolant after collection will be higher, which is manifested as the high temperature of the liquid finally output by the outlet pipe, which is not conducive to recycling.

[0005] In general, the cooling effect of the components is greatly limited, and it takes a long time to reach the target temperature. During the operation of the vehicle, if the cooling effect of the battery module is not sufficient, it will at least affect the operation of the battery pack, and at worst cause thermal runaway and cause losses.

[0006] If one hopes to enhance the cooling effect and shorten the cooling time by blindly increasing the cold flux, it will lead to high cost of use. At the same time, the pipeline will have to withstand high pressure, which is not an ideal method. Summary of the invention

[0007] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a liquid cooling plate with a staggered parallel structure, which can solve the problem of insufficient cooling effect of the existing battery module side liquid cooling assembly.

[0008] The present invention is achieved through the following technical solutions: A liquid cooling plate with a staggered parallel structure, comprising: a first plate group, comprising: a first liquid inlet pipe, a first liquid outlet pipe and a plurality of first liquid cooling plates arranged in parallel at intervals; a first flow channel is provided on the first liquid cooling plate; a first liquid inlet pipe is passed through each first liquid cooling plate and is connected to each first flow channel at the same time; a first liquid outlet pipe is passed through each first liquid cooling plate and is connected to each first flow channel at the same time; a first opening groove is provided on the side of the first liquid cooling plate; a first gap is formed between two adjacent first liquid cooling plates; a second plate group, comprising: a second liquid inlet pipe, a second liquid outlet pipe and a plurality of second liquid cooling plates arranged in parallel at intervals; a second flow channel is provided on the second liquid cooling plate; the second liquid inlet pipe is passed through all the second liquid cooling plates and is connected to each first flow channel at the same time second flow channels; a second liquid outlet pipe is provided on all the second liquid cooling plates and is connected to each second flow channel at the same time; a second opening groove is provided on the side of the second liquid cooling plate; a second gap is formed between two adjacent second liquid cooling plates; the first plate group is snapped with the second plate group; the first liquid inlet pipe is snapped into the second opening groove, and the second liquid cooling plate is accommodated in the first gap; the second liquid outlet pipe is snapped into the first opening groove, and the first liquid cooling plate is placed in the second gap, so that the first liquid cooling plate and the second liquid cooling plate are arranged in pairs, and the first flow channel and the second flow channel are not connected to each other; a third gap suitable for accommodating battery cells is formed between the adjacent first liquid cooling plates and the second liquid cooling plates.

[0009] Furthermore, the structure of the first opening groove is a U-shaped opening groove, which is suitable for being connected with the second liquid outlet pipe by snapping; the structure of the second opening groove is a U-shaped opening groove, which is suitable for being connected with the first liquid inlet pipe by snapping.

[0010] Furthermore, the opening directions of the first opening groove and the second opening groove are opposite to each other and are arranged opposite to each other; the first liquid inlet pipe, the first opening groove, the second opening groove and the second liquid outlet pipe are arranged on the same horizontal plane.

[0011] Furthermore, the width of the first gap is equal to the width of the second gap; the second liquid cooling plate is placed at the center of the first gap, and the first liquid cooling plate is placed at the center of the second gap, so that the widths of all the third gaps are the same.

[0012] Furthermore, a first corrugated section is provided at the clamping position of the first liquid inlet pipe relative to the second liquid cooling plate, the second opening groove is clamped to the trough of the first corrugated section, and the peak of the first corrugated section is against both sides of the second opening groove to limit the shaking of the second liquid cooling plate along the axial direction of the first liquid inlet pipe.

[0013] Furthermore, a second corrugated section is provided at the clamping position of the second liquid outlet pipe relative to the first liquid cooling plate, the first opening groove is clamped to the trough of the second corrugated section, and the peak of the second corrugated section abuts against both sides of the first opening groove to limit the shaking of the first liquid cooling plate along the axial direction of the second liquid outlet pipe.

[0014] Further, the first flow channel has a first flow channel inlet and a first flow channel outlet; the first liquid inlet pipe is provided with a plurality of first liquid inlet clamping parts connected to the tube along the radial direction; the first liquid inlet clamping part is fixedly clamped on the first liquid cooling plate, and at the same time, the interior of the first liquid inlet clamping part is connected to the first flow channel inlet; the first liquid outlet pipe is provided with a plurality of first liquid outlet clamping parts connected to the tube along the radial direction, the first liquid outlet clamping part is fixedly clamped on the first liquid cooling plate, and at the same time, the interior of the first liquid outlet clamping part is connected to the first flow channel outlet.

[0015] Furthermore, the second flow channel has a second flow channel inlet and a second flow channel outlet; the second liquid inlet pipe is provided with a plurality of second liquid inlet clamping parts connected to the tube along the radial direction, the second liquid inlet clamping parts are fixedly clamped on the second liquid cooling plate, and at the same time, the interior of the second liquid inlet clamping parts is connected to the second flow channel inlet; the second liquid outlet pipe is provided with a plurality of second liquid outlet clamping parts connected to the tube along the radial direction, the second liquid outlet clamping parts are fixedly clamped on the second liquid cooling plate, and at the same time, the interior of the second liquid outlet clamping parts is connected to the second flow channel outlet.

[0016] Furthermore, the rear end branch of the first flow channel inlet includes: a first proximal tributary and a first distal tributary; the first proximal tributary is located on the side of the plate surface close to the first flow channel outlet, and the first distal tributary is located on the side of the plate surface away from the first flow channel outlet; the first proximal tributary and the first distal tributary both include S-shaped bending channels, and the first proximal tributary and the first distal tributary are simultaneously connected to the first flow channel outlet to re-collect flows; the flow distance of the first proximal tributary is greater than the flow distance of the first distal tributary, so that the flow resistance of the first proximal tributary is consistent with that of the first distal tributary.

[0017] Furthermore, the rear end branch of the second flow channel inlet includes: a second proximal tributary and a second distal tributary; the second proximal tributary is located on the side of the plate surface close to the second flow channel outlet, and the second distal tributary is located on the side of the plate surface away from the second flow channel outlet; the second proximal tributary and the second distal tributary both include an S-shaped bent flow channel, and the second proximal tributary and the second distal tributary are simultaneously connected to the second flow channel outlet to re-collect flows; the flow distance of the second proximal tributary is greater than the flow distance of the second distal tributary, so that the flow resistance of the second proximal tributary and the second distal tributary are consistent.

[0018] Compared with the prior art, the present invention has the following beneficial effects: During operation, a cooling liquid is introduced into each of the first liquid inlet pipe and the second liquid inlet pipe respectively, forming two independent cooling water paths that are not connected to each other. For the first plate group: coolant is introduced into the first liquid inlet pipe, and the first liquid inlet pipe evenly distributes the cooling liquid to each first liquid cooling plate. The first liquid cooling plates are in a parallel structural relationship. The cooling liquid coming out of each first flow channel after heat exchange will be re-collected into the first liquid outlet pipe, and finally uniformly output. For the second plate group: another cooling liquid is introduced into the second liquid inlet pipe, and the second liquid inlet pipe evenly distributes the cooling liquid to each second liquid cooling plate. The second liquid cooling plates are in a parallel structural relationship. The cooling liquid coming out of each second flow channel after heat exchange will be re-collected into the second liquid outlet pipe, and finally uniformly output.

[0019] There is a specific connection relationship between the first plate group and the second plate group: the first plate group and the second plate group are in a mutually clamped relationship, the first open groove on the first liquid cooling plate is clamped to the second liquid outlet pipe of the second plate group, and the second open groove of the second liquid cooling plate is clamped to the first liquid inlet pipe of the first plate group, so that the first plate group and the second plate group form a staggered and overlapping positional relationship. This staggered and overlapping connection relationship is also manifested as: the first liquid cooling plate is accommodated in the second gap formed by the second liquid cooling plates in pairs, and the second liquid cooling plate is accommodated in the first gap formed by the first liquid cooling plates in pairs, so that the first liquid cooling plate and the second liquid cooling plate are alternately arranged, and the first liquid cooling plate and the second liquid cooling plate form a third gap, and the width of the third gap is determined by the battery cells of the battery module.

[0020] When performing the cooling work of the battery module, each battery cell of the battery module is installed in each of the third gaps mentioned above, and the left and right sides of each battery cell are tightly fitted by the first liquid cooling plate and the second liquid cooling plate respectively. Since the first liquid cooling plate and the second liquid cooling plate are fed with two independent and unconnected cooling liquids, the two sides of the battery cell are respectively acted upon by two independent cooling waters. Compared with the previous method of using a single cooling water to dissipate heat on both sides of the battery cell at the same time, each cooling water in the liquid cooling device is only responsible for the heat exchange of one side, which significantly improves the heat exchange efficiency of the battery cell side and greatly shortens the cooling time when the target temperature is constant.

[0021] On the premise of having such high heat exchange efficiency, the present invention also has a very high structural compactness. The first plate group and the second plate group are staggered and overlapped, achieving a matching relationship similar to the upper and lower bite, which is also manifested in that the overall width of the liquid cooling device is close to the width of each of its components (the first plate group and the second plate group). The assembly connection between the two plate groups effectively utilizes the gap space (the first gap and the second gap) that each of them has, so that the overall width, volume, and space occupancy rate of the liquid cooling device are not significantly increased.

[0022] Therefore, in the application environment of new energy vehicle thermal management module, which has high requirements on volume, installation space and compactness, the present invention has significant application advantages. In addition, compared with the method of blindly increasing the coolant flow rate, the present invention can significantly improve the heat exchange efficiency while maintaining the cold flux unchanged. At the same time, the internal pipes do not need to bear the high pressure caused by the increased flow rate, and the use cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is the overall assembly diagram of the present invention; Figure 2 Shown Figure 1 A top view of Figure 3 Shown Figure 1 A front view of Figure 4 Shown is a schematic diagram of separation of the first plate group and the second plate group; Figure 5 Shown is a schematic diagram of separation of the first plate group and the second plate group from another perspective; Figure 6 Shown Figure 5 A front view of Figure 7 Shown is an overall assembly diagram of another perspective of the present invention; Figure 8 Shown Figure 7 A partial enlarged view of the middle A; Fig. 9 Shown is a perspective view of the first plate group; Fig.10 Shown is a cross-sectional view of the first plate assembly cut along the central axis of the first liquid outlet pipe; Fig.11 Shown Fig.10 A partial enlarged view of point B in the middle; Fig.12 Shown is a cross-sectional view of the first plate assembly cut along the central axis of the first liquid inlet pipe; Fig.13 Shown Fig.12 A partial enlarged view of point C in the middle; Fig.14 Shown is a perspective view of the second plate set; Fig.15 Shown is a cross-sectional view of the second plate assembly cut along the central axis of the second liquid inlet pipe; Fig.16 Shown Fig.15 A partial enlarged view of point D in the middle; Fig.17 Shown is a cross-sectional view of the second plate assembly cut along the central axis of the second liquid outlet pipe; Fig.18 Shown Fig.17 A partial enlarged view of point E in the middle; Fig.19 Shown is a schematic diagram of the first flow channel; Fig. 20 Shown is a schematic diagram of the second flow channel.

[0024] In the figure: 10, first plate group; 11, first liquid inlet pipe; 111, first liquid inlet clamping part; 112, first corrugated section; 12, first liquid outlet pipe; 122, first liquid outlet clamping part; 13, first liquid cooling plate; 131, first flow channel; 132, first opening groove; 133, first flow channel inlet; 134, first flow channel outlet; 135, first proximal tributary; 136, first distal tributary; 20, second plate group; 21, second liquid inlet pipe; 211, second liquid inlet clamping part; 22, second liquid outlet pipe; 221, second corrugated section; 222, second liquid outlet clamping part; 23, second liquid cooling plate; 231, second flow channel; 232, second opening groove; 233, second flow channel inlet; 234, second flow channel outlet; 235, second proximal tributary; 236, second distal tributary. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0026] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-Figure 3 The present invention discloses a liquid cooling plate with a staggered parallel structure, which can be applied to a thermal management module in a new energy vehicle to perform heat exchange cooling on a battery module.

[0030] See also Figure 4-Figure 6 The present invention includes a first plate group 10 and a second plate group 20 .

[0031] Among them, see Figure 4-Figure 6 , Fig. 9 , the first plate group 10 includes: a first liquid inlet pipe 11, a first liquid outlet pipe 12 and a plurality of first liquid cooling plates 13 arranged in parallel at intervals. The first liquid inlet pipe 11 is provided on each first liquid cooling plate 13, and the first liquid outlet pipe 12 is also provided on each first liquid cooling plate 13, so as to form a stable plate group structure; the first liquid outlet pipe 12 is located in the outer direction of the first liquid inlet pipe 11. A first flow channel 131 is provided on the first liquid cooling plate 13 for the coolant to flow on the plate surface of the first liquid cooling plate 13. The first liquid inlet pipe 11 is connected to all the first flow channels 131 at the same time, so as to supply coolant to each first liquid cooling plate 13. At the same time, a first opening groove 132 is provided on the side of the first liquid cooling plate 13, and the first opening groove 132 is a card groove structure. The first liquid cooling plates 13 are arranged according to a certain gap. Specifically, a first gap L1 is formed between two adjacent first liquid cooling plates 13.

[0032] See also Figure 4-Figure 6 , Fig.14 The second plate group 20 includes: a second liquid inlet pipe 21, a second liquid outlet pipe 22 and a plurality of second liquid cooling plates 23 arranged in parallel at intervals. The second liquid inlet pipe 21 is provided on each first liquid cooling plate 13, and the second liquid outlet pipe 22 is also provided on each second liquid cooling plate 23, thereby forming a stable plate group structure. The second liquid inlet pipe 21 is located in the outer direction of the second liquid outlet pipe 22. A second flow channel 231 is provided on the second liquid cooling plate 23 for the coolant to flow on the plate surface of the second liquid cooling plate 23. The second liquid inlet pipe 21 is connected to all the second flow channels 231 at the same time, thereby supplying coolant to each second liquid cooling plate 23. At the same time, a second opening groove 232 is provided on the side of the second liquid cooling plate 23, and the second opening groove 232 is a card groove structure. The second liquid cooling plates 23 are arranged according to a certain gap. Specifically, a second gap L2 is formed between two adjacent second liquid cooling plates 23.

[0033] See also Figure 7-Figure 8 The first plate group 10 and the second plate group 20 are mutually clamped. The first liquid inlet pipe 11 is clamped into the second opening groove 232, and the second liquid cooling plate 23 is accommodated in the first gap L1 (see Figure 3 and Figure 6 At the same time, the second liquid outlet pipe 22 is clamped into the first opening groove 132, and the first liquid cooling plate 13 is accommodated in the second gap L2 (see Figure 3and Figure 6 ), so that the first liquid cooling plates 13 and the second liquid cooling plates 23 are arranged alternately in pairs, and the first flow channel 131 and the second flow channel 231 are not connected to each other.

[0034] See also Figure 3 A third gap L3 is formed between the adjacent first liquid cooling plate 13 and the second liquid cooling plate 23 , and L3 is equal to the width of the battery unit and is used to accommodate the battery unit.

[0035] The working principle of the present invention is: During operation, a cooling liquid is introduced into each of the first liquid inlet pipe 11 and the second liquid inlet pipe 21, respectively, to form two independent cooling water paths that are not connected to each other. For the first plate group 10: Cooling liquid is introduced into the first liquid inlet pipe 11, and the first liquid inlet pipe 11 evenly distributes the cooling liquid to each first liquid cooling plate 13. The first liquid cooling plates 13 are in a parallel structural relationship. The cooling liquid coming out of each first flow channel 131 after heat exchange will be re-collected into the first liquid outlet pipe 12, and finally uniformly output. For the second plate group 20: Another cooling liquid is introduced into the second liquid inlet pipe 21, and the second liquid inlet pipe 21 evenly distributes the cooling liquid to each second liquid cooling plate 23. The second liquid cooling plates 23 are in a parallel structural relationship. The cooling liquid coming out of each second flow channel 231 after heat exchange will be re-collected into the second liquid outlet pipe 22, and finally uniformly output.

[0036] There is a specific connection relationship between the first plate group 10 and the second plate group 20: the first plate group 10 and the second plate group 20 are in a mutually clamped relationship, the first opening groove 132 on the first liquid cooling plate 13 is clamped to the second liquid outlet pipe 22 of the second plate group 20, and the second opening groove 232 of the second liquid cooling plate 23 is clamped to the first liquid inlet pipe 11 of the first plate group 10, so that the first plate group 10 and the second plate group 20 form a staggered and overlapping positional relationship. This staggered and overlapping connection relationship is also manifested as: the first liquid cooling plate 13 is accommodated in the second gap formed by the second liquid cooling plates 23, and the second liquid cooling plates 23 are accommodated in the first gap formed by the first liquid cooling plates 13, so that the first liquid cooling plate 13 and the second liquid cooling plate 23 are alternately arranged, and the first liquid cooling plate 13 and the second liquid cooling plate 23 form a third gap, and the width of the third gap is determined by the battery cells of the battery module.

[0037] When performing the cooling work of the battery module, each battery cell of the battery module is installed in each of the third gaps L3 mentioned above, and the left and right sides of each battery cell are tightly fitted by the first liquid cooling plate 13 and the second liquid cooling plate 23. Since two independent and unconnected cooling liquids are introduced into the first liquid cooling plate 13 and the second liquid cooling plate 23, the two sides of the battery cell are respectively acted upon by two independent cooling waters. Compared with the previous method of using a single cooling water to dissipate heat on both sides of the battery cell at the same time, each cooling water in the liquid cooling device is only responsible for the heat exchange of one side, which significantly improves the heat exchange efficiency of the battery cell side and greatly shortens the cooling time when the target temperature is constant.

[0038] On the premise of having such high heat exchange efficiency, the present invention also has a very high structural compactness. The first plate group 10 and the second plate group 20 are staggered and overlapped, achieving a matching relationship similar to upper and lower bite, which is also manifested in that the overall width of the liquid cooling device is close to the width of each of its components (the first plate group 10 and the second plate group 20). For example, in this embodiment, refer to Figure 3 and Figure 6 , the width of the first plate group 10 is W1, and the width of the second plate group 20 is W2 (in this embodiment, W2 is also equal to W1); after the above-mentioned staggered stacking, the overall width of the liquid cooling plate device is W 总 = (W1+L3), or (W2+L3). It can be seen that the width of L3 is very small compared to W1 and W2, so the overall width of the liquid cooling plate device is W 总 It is close to W1 (or W2).

[0039] The assembly connection between the two plate groups effectively utilizes the gap space (the first gap and the second gap) that each of them has, so that the width, volume and space occupancy rate of the liquid cooling plate device are not significantly increased.

[0040] Therefore, in the application environment of new energy vehicle thermal management module, which has high requirements on volume, installation space and compactness, the present invention has significant application advantages. In addition, compared with the method of blindly increasing the coolant flow rate, the present invention can significantly improve the heat exchange efficiency while maintaining the cold flux unchanged. At the same time, the internal pipes do not need to bear the high pressure caused by the increased flow rate, and the use cost is relatively low.

[0041] Preferably, see Figure 5The structure adopted by the first opening groove 132 is a U-shaped opening groove. Since the second liquid inlet pipe 21 usually adopts a round tube structure, the U-shaped opening is conducive to the snap connection of the second liquid outlet pipe 22. Similarly, the structure adopted by the second opening groove 232 is also a U-shaped opening groove. Since the first liquid inlet pipe 11 usually adopts a round tube structure, the U-shaped opening is conducive to the snap connection of the first liquid inlet pipe 11.

[0042] For further optimization, see Figure 5 The opening directions of the first opening groove 132 and the second opening groove 232 are opposite and are arranged opposite to each other. The first liquid inlet pipe 11, the first opening groove 132, the second opening groove 232 and the second liquid outlet pipe 22 are arranged on the same horizontal plane, that is, the central axes of the above four are on the same horizontal plane. In this way, when the first liquid inlet pipe 11 is snapped into the second opening groove 232, the second liquid outlet pipe 22 is also snapped into the first opening groove 132, forming a tight buckling structure.

[0043] Preferably, see Figure 3 , the width of the first gap L1 is equal to the width of the second gap L2. The second liquid cooling plate 23 is placed at the center of the first gap L1, and at the same time, the first liquid cooling plate 13 is placed at the center of the second gap L2, so that the widths of all the third gaps L3 are consistent, so as to match the use of each battery unit.

[0044] Preferably, see Fig.10 , Fig.12 The first liquid inlet pipe 11 is provided with a first corrugated section 112 at a clamping position relative to the second liquid cooling plate 23. The first corrugated section 112 includes a concave trough portion and a convex crest portion. The second opening groove 232 is clamped to the trough portion of the first corrugated section 112, and the crest portions on both sides abut against both sides of the second opening groove 232, thereby limiting the second liquid cooling plate 23 from shaking along the axial direction of the first liquid inlet pipe 11, ensuring that the relative position of the second liquid cooling plate 23 and the second liquid outlet pipe 22 is fixed.

[0045] Similarly, see Figure 14-15 The second liquid outlet pipe 22 is provided with a second corrugated section 221 at a clamping position relative to the first liquid cooling plate 13. The second corrugated section 221 includes a concave trough and a convex crest. The first opening groove 132 is clamped to the trough of the second corrugated section 221, and the crests on both sides abut against both sides of the first opening groove 132, thereby limiting the shaking of the first liquid cooling plate 13 along the axial direction of the second liquid outlet pipe 22, ensuring that the relative positions of the first liquid cooling plate 13 and the second liquid outlet pipe 22 are fixed.

[0046] Preferably, the first flow channel 131 has a first flow channel inlet 133 and a first flow channel outlet 134, see Figure 12-13The first liquid inlet pipe 11 is provided with a plurality of first liquid inlet clamping parts 111 connected to the pipe in the radial direction. The first liquid inlet clamping parts 111 are fixedly clamped on both sides of the first liquid cooling plate 13, and the interior of the first liquid inlet clamping parts 111 is connected to the first flow channel inlet 133. During the liquid inlet process of the first plate group 10, the coolant in the first liquid inlet pipe 11 passes through each first liquid inlet clamping part 111 and enters each first flow channel 131.

[0047] See also Figure 10-11 The first liquid outlet pipe 12 is provided with a plurality of first liquid outlet clamping parts 122 connected to the pipe in the radial direction. The first liquid outlet clamping parts 122 are fixedly clamped on both sides of the first liquid cooling plate 13. Meanwhile, the interior of the first liquid outlet clamping parts 122 is connected to the first flow channel outlet 134. The coolant coming out of each first flow channel 131 will pass through the first liquid outlet clamping parts 122 and enter the first liquid outlet pipe 12 to be re-collected.

[0048] Similarly, the second flow channel 231 has a second flow channel inlet 233 and a second flow channel outlet 234. Figure 15-16 The second liquid inlet pipe 21 is provided with a plurality of second liquid inlet clamping parts 211 connected to the pipe in the radial direction. The second liquid inlet clamping parts 211 are fixedly clamped on both sides of the second liquid cooling plate 23. Meanwhile, the interior of the second liquid inlet clamping parts 211 is connected to the second flow channel inlet 233. During the liquid inlet process of the second plate group 20, the coolant in the second liquid inlet pipe 21 enters into each second flow channel 231 through each second liquid inlet clamping part 211.

[0049] See also Figure 17-Figure 18 The second liquid outlet pipe 22 is provided with a plurality of second liquid outlet clamping parts 222 connected to the pipe in the radial direction. The second liquid outlet clamping parts 222 are fixedly clamped on both sides of the second liquid cooling plate 23. Meanwhile, the interior of the second liquid outlet clamping parts 222 is connected to the second flow channel outlet 234. The coolant coming out of each second flow channel 231 will pass through the second liquid outlet clamping parts 222 and enter the second liquid outlet pipe 22 for re-collection.

[0050] Preferably, see Fig.19 , for the flow channel structure on the first liquid cooling plate 13: the rear end of the first flow channel inlet 133 is divided into a first proximal branch 135 and a first distal branch 136. The first proximal branch 135 is located on the side of the plate surface close to the first flow channel outlet 134, and the first distal branch 136 is located on the side of the plate surface away from the first flow channel outlet 134. The first proximal branch 135 and the first distal branch 136 both include S-shaped bent flow channels, so that liquid cooling is evenly performed on various positions on the plate surface; the first proximal branch 135 and the first distal branch 136 are simultaneously connected to the first flow channel outlet 134 to re-collect the flow.

[0051] Compared with the first distal tributary 136, the first proximal tributary 135 is closer to the first flow channel outlet 134, so the flow resistance of the two tends to be different; in order to compensate for the difference in flow resistance and make the flow distribution of the two tributaries more even, the flow distance of the first proximal tributary 135 is designed to be larger than the flow distance of the first distal tributary 136. For example, the first proximal tributary 135 can have more S-shaped bends to make the flow resistance of the two tributaries tend to be consistent.

[0052] Similarly, see Fig. 20 , for the flow channel structure on the second liquid cooling plate 23: the rear end of the second flow channel inlet 233 is divided into a second proximal branch 235 and a second distal branch 236. The second proximal branch 235 is located on the side of the plate surface close to the second flow channel outlet 234, and the second distal branch 236 is located on the side of the plate surface away from the second flow channel outlet 234. The second proximal branch 235 and the second distal branch 236 both include S-shaped bending flow channels, so that liquid cooling and heat dissipation are evenly performed at various positions on the plate surface; the second proximal branch 235 and the second distal branch 236 are simultaneously connected to the second flow channel outlet 234 to re-collect the flow.

[0053] Compared with the second distal tributary 236, the second proximal tributary 235 is closer to the second flow channel outlet 234, so the flow resistance of the two tends to be different; in order to compensate for the difference in flow resistance and make the flow distribution of the two tributaries more even, the flow distance of the second proximal tributary 235 is designed to be larger than the flow distance of the second distal tributary 236. For example, the second proximal tributary 235 can have more S-shaped bends to make the flow resistance of the two tributaries tend to be consistent.

[0054] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A liquid cooling plate with a staggered parallel structure, characterized in that: include: The first plate group includes: a first liquid inlet pipe, a first liquid outlet pipe, and a plurality of first liquid cooling plates arranged in parallel at intervals; a first flow channel is provided on the first liquid cooling plate; the first liquid inlet pipe is provided through each first liquid cooling plate and is connected to each first flow channel at the same time; the first liquid outlet pipe is provided through each first liquid cooling plate and is connected to each first flow channel at the same time; a first opening groove is provided on a side of the first liquid cooling plate; A first gap is formed between two adjacent first liquid cooling plates; The second plate group includes: a second liquid inlet pipe, a second liquid outlet pipe, and a plurality of second liquid cooling plates arranged in parallel at intervals; a second flow channel is provided on the second liquid cooling plate; the second liquid inlet pipe is provided through all the second liquid cooling plates and is connected to each second flow channel at the same time; the second liquid outlet pipe is provided through all the second liquid cooling plates and is connected to each second flow channel at the same time; a second opening groove is provided on the side of the second liquid cooling plate; A second gap is formed between two adjacent second liquid cooling plates; The first plate group is clamped with the second plate group; the first liquid inlet pipe is clamped into the second open groove, and the second liquid cooling plate is accommodated in the first gap; the second liquid outlet pipe is clamped into the first open groove, and the first liquid cooling plate is placed in the second gap, so that the first liquid cooling plates and the second liquid cooling plates are arranged alternately in pairs, and the first flow channel and the second flow channel are not connected to each other; A third gap suitable for accommodating a battery unit is formed between the adjacent first liquid cooling plates and the second liquid cooling plates.

2. The liquid cooling plate with staggered parallel structure as claimed in claim 1, characterized in that: The structure of the first opening groove is a U-shaped opening groove, which is suitable for being connected with the second liquid outlet pipe by clamping; the structure of the second opening groove is a U-shaped opening groove, which is suitable for being connected with the first liquid inlet pipe by clamping.

3. The liquid cooling plate with staggered parallel structure as claimed in claim 2, characterized in that: The opening directions of the first opening groove and the second opening groove are opposite to each other and are arranged opposite to each other; The first liquid inlet pipe, the first open slot, the second open slot and the second liquid outlet pipe are arranged on the same horizontal plane.

4. The liquid cooling plate with staggered parallel structure as claimed in claim 1, characterized in that: The width of the first gap is equal to the width of the second gap; the second liquid cooling plate is placed at the center of the first gap, and the first liquid cooling plate is placed at the center of the second gap, so that the widths of all the third gaps are the same.

5. The liquid cooling plate with staggered parallel structure as claimed in claim 2, characterized in that: A first corrugated section is provided at the clamping position of the first liquid inlet pipe relative to the second liquid cooling plate, the second opening groove is clamped to the trough of the first corrugated section, and the peak of the first corrugated section abuts against both sides of the second opening groove to limit the second liquid cooling plate from shaking along the axial direction of the first liquid inlet pipe.

6. The liquid cooling plate with staggered parallel structure as claimed in claim 2, characterized in that: A second corrugated section is provided at the clamping position of the second liquid outlet pipe relative to the first liquid cooling plate, the first opening groove is clamped to the trough of the second corrugated section, and the peak of the second corrugated section abuts against both sides of the first opening groove to limit the shaking of the first liquid cooling plate along the axial direction of the second liquid outlet pipe.

7. The liquid cooling plate with staggered parallel structure as claimed in claim 1, characterized in that: The first flow channel has a first flow channel inlet and a first flow channel outlet; The first liquid inlet pipe is provided with a plurality of first liquid inlet clamping parts connected to the pipe in the radial direction; the first liquid inlet clamping parts are fixedly clamped on the first liquid cooling plate, and the interior of the first liquid inlet clamping parts is connected to the inlet of the first flow channel; The first liquid outlet pipe is provided with a plurality of first liquid outlet clamping parts connected to the pipe along the radial direction. The first liquid outlet clamping parts are fixedly clamped on the first liquid cooling plate. Meanwhile, the interior of the first liquid outlet clamping parts is connected to the first flow channel outlet.

8. The liquid cooling plate with staggered parallel structure as claimed in claim 1, characterized in that: The second flow channel has a second flow channel inlet and a second flow channel outlet; The second liquid inlet pipe is provided with a plurality of second liquid inlet clamping parts in communication with the pipe in the radial direction, the second liquid inlet clamping parts are fixedly clamped on the second liquid cooling plate, and the interior of the second liquid inlet clamping parts is in communication with the inlet of the second flow channel; The second liquid outlet pipe is provided with a plurality of second liquid outlet clamping parts connected to the pipe along the radial direction. The second liquid outlet clamping parts are fixedly clamped on the second liquid cooling plate. Meanwhile, the interior of the second liquid outlet clamping parts is connected to the second flow channel outlet.

9. The liquid cooling plate with staggered parallel structure as claimed in claim 7, characterized in that: The rear end branch of the first flow channel inlet includes: a first proximal branch and a first distal branch; the first proximal branch is located on the side of the plate surface close to the first flow channel outlet, and the first distal branch is located on the side of the plate surface far from the first flow channel outlet; the first proximal branch and the first distal branch both include an S-shaped bent flow channel, and the first proximal branch and the first distal branch are simultaneously connected to the first flow channel outlet to re-collect; The flow distance of the first proximal branch is greater than the flow distance of the first distal branch, so that the flow resistance of the first proximal branch is consistent with that of the first distal branch.

10. The liquid cooling plate with staggered parallel structure as claimed in claim 8, characterized in that: The rear end of the second flow channel inlet has: a second proximal branch and a second distal branch; the second proximal branch is located on the side of the plate surface close to the second flow channel outlet, and the second distal branch is located on the side of the plate surface far from the second flow channel outlet; the second proximal branch and the second distal branch both include an S-shaped bent flow channel, and the second proximal branch and the second distal branch are simultaneously connected to the second flow channel outlet to re-collect; The flow distance of the second proximal branch is greater than the flow distance of the second distal branch, so that the flow resistance of the second proximal branch is consistent with that of the second distal branch.

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