Heat dissipation device and battery module

Abstract

The utility model relates to the technical field of batteries, in particular to a heat dissipation device and a battery module, and the heat dissipation device comprises a bottom liquid cooling plate and a vertical liquid cooling plate; wherein the vertical liquid cooling plate is fixed on the upper surface of the bottom liquid cooling plate, and at least two mounting spaces are formed and are used for mounting battery modules; a first circulation opening and a second circulation opening are formed in the bottom liquid cooling plate, a third circulation opening and a fourth circulation opening are formed in the vertical liquid cooling plate, and the second circulation opening is communicated with the third circulation opening through a pipeline. The vertical liquid cooling plate provided by the utility model is inserted among a plurality of battery modules which are arranged in sequence, so that the battery module in the middle can be well cooled, and under the further assistance of the bottom liquid cooling plate, the heat exchange area and the heat exchange efficiency of the battery module are greatly improved, so that the service life of the battery module is prolonged, and the charging and discharging power of the battery module is enhanced; furthermore, the working performance of the battery is improved, and the occurrence probability of thermal runaway is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a heat dissipation device and a battery module. Background Art

[0002] At present, a battery module includes a battery module and a liquid cooling plate. The number of battery modules is multiple and arranged sequentially. The liquid cooling plate is set at the bottom, side or top of the battery module. However, the liquid cooling plate at the above position cannot cool the battery module in the middle position, resulting in a small heat exchange area, low heat exchange efficiency, and poor cooling capacity, which shortens the service life of the battery module, reduces the charging and discharging power of the battery module, and increases the probability of thermal runaway. Utility Model Content

[0003] The purpose of the present application is to provide a heat dissipation device and a battery module, which to a certain extent solves the technical problems existing in the prior art that the liquid cooling plate in the battery pack is often arranged at the top, bottom or side of the battery module, and the module in the middle position cannot be cooled, resulting in a small heat exchange area, low heat exchange efficiency, poor cooling capacity, shortened service life of the battery module, reduced charge and discharge power of the battery module, and increased probability of thermal runaway.

[0004] The present application provides a heat dissipation device, comprising: a bottom liquid cooling plate and a vertical liquid cooling plate; wherein the vertical liquid cooling plate is fixed to the upper surface of the bottom liquid cooling plate and forms at least two installation spaces for installing battery modules;

[0005] The bottom liquid cooling plate is formed with a first flow opening and a second flow opening, the vertical liquid cooling plate is formed with a third flow opening and a fourth flow opening, and the second flow opening is connected to the third flow opening through a pipeline.

[0006] In the above technical solution, further, along the height direction of the vertical liquid cooling plate and from bottom to top, the interior of the vertical liquid cooling plate is formed with a first flow channel area and a second flow channel area which are arranged in sequence and at intervals, and both the first flow channel area and the second flow channel area extend along the length direction of the vertical liquid cooling plate.

[0007] In any of the above technical solutions, further, along the length direction of the vertical liquid cooling plate, a connecting flow channel is formed inside one end of the vertical liquid cooling plate, and the connecting flow channel extends along the height direction of the vertical liquid cooling plate; the first flow channel area and the second flow channel area are connected through the connecting flow channel;

[0008] One end of the first flow channel region away from the connecting flow channel is connected to the third flow port, and one end of the second flow channel region away from the connecting flow channel is connected to the fourth flow port.

[0009] In any of the above technical solutions, further, the first flow channel area includes a first flow channel and extends along the length direction of the vertical liquid cooling plate, and the first flow channel is respectively connected to the third flow port and the connecting flow channel.

[0010] In any of the above technical solutions, further, the number of the first flow channels is multiple, and the multiple first flow channels are sequentially spaced along the height direction of the vertical liquid cooling plate to form parallel flow channels;

[0011] The first flow channel area also includes a first liquid distribution cavity, and along the length direction of the vertical liquid cooling plate, the first liquid distribution cavity, the first flow channel and the connecting flow channel are sequentially connected; the first liquid distribution cavity is connected to the third flow port.

[0012] In any of the above technical solutions, further, a first spoiler is arranged in the first flow channel.

[0013] In any of the above technical solutions, further, the first spoiler extends along the length direction of the first flow channel and covers the entire length of the first flow channel.

[0014] In any of the above technical solutions, further, a cross section of the first spoiler along a direction perpendicular to the length of the first flow channel is T-shaped.

[0015] In any of the above technical solutions, further, the second flow channel area includes a second flow channel, and extends along the length direction of the vertical liquid cooling plate, and the second flow channel is respectively connected to the fourth flow port and the connecting flow channel.

[0016] In any of the above technical solutions, further, the number of the second flow channels is multiple, and the multiple second flow channels are sequentially spaced along the height direction of the vertical liquid cooling plate to form parallel flow channels;

[0017] The second flow channel area also includes a second liquid distribution chamber, and along the length direction of the vertical liquid cooling plate, the second liquid distribution chamber, the second flow channel and the connecting flow channel are sequentially connected; the second liquid distribution chamber is connected to the fourth flow port.

[0018] In any of the above technical solutions, further, a second spoiler is provided in the second flow channel.

[0019] In any of the above technical solutions, further, the second spoiler extends along the length direction of the second flow channel and covers the entire length of the second flow channel.

[0020] In any of the above technical solutions, further, a cross section of the second spoiler along a direction perpendicular to the length of the second flow channel is T-shaped.

[0021] In any of the above technical solutions, further, the vertical liquid cooling plate is connected to the bottom liquid cooling plate by welding.

[0022] In any of the above technical solutions, further, a positioning groove is formed at the bottom of the vertical liquid cooling plate along its height direction, a positioning protrusion is formed on the upper surface of the bottom liquid cooling plate, and the positioning protrusion is installed in the positioning groove.

[0023] In any of the above technical solutions, further, the number of the vertical liquid cooling plates is multiple, and they are arranged in sequence and at intervals along a preset direction.

[0024] In any of the above technical solutions, further, a slot is formed at one end of the vertical liquid cooling plate along its length direction.

[0025] The present application also provides a battery module, comprising a battery module and a heat dissipation device according to any of the above technical solutions, and the battery module is installed in any of the installation spaces. Therefore, all the beneficial technical effects of the heat dissipation device are achieved, which will not be described in detail here.

[0026] In any of the above technical solutions, further, the battery module also includes a cable tie, and the battery module and the vertical liquid cooling plate are tied and fixed by the cable tie.

[0027] In any of the above technical solutions, further, the battery module is bonded to the vertical liquid cooling plate.

[0028] In any of the above technical solutions, further, the battery module is bonded to the bottom liquid cooling plate.

[0029] Compared with the prior art, the beneficial effects of this application are:

[0030] The vertical liquid cooling plate provided in the present application is interspersed between multiple battery modules arranged in sequence, so that the battery modules in the middle position can be better cooled, and with the further assistance of the bottom liquid cooling plate, the heat exchange area and heat exchange efficiency of the battery module are greatly improved, so that the life of the battery module and the charge and discharge power are enhanced, thereby improving the working performance of the battery and greatly reducing the probability of thermal runaway. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the structure of the bottom liquid cooling plate provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of a vertical liquid cooling plate provided in an embodiment of the present application;

[0034] Figure 3 Another schematic diagram of the structure of the vertical liquid cooling plate provided in the embodiment of the present application;

[0035] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A;

[0036] Figure 5 Another schematic diagram of the structure of the vertical liquid cooling plate provided in the embodiment of the present application;

[0037] Figure 6 Another structural schematic diagram of the vertical liquid cooling plate provided in the embodiment of the present application;

[0038] Figure 7 for Figure 6 A cross-sectional view of the vertical liquid cooling plate along section BB is shown;

[0039] Figure 8 for Figure 7 A partial enlarged structural schematic diagram of a vertical liquid cooling plate is shown;

[0040] Fig. 9 for Figure 7 Another partial enlarged structural schematic diagram of the vertical liquid cooling plate shown;

[0041] Fig.10 for Figure 6 A cross-sectional view of the vertical liquid cold plate along the CC section is shown;

[0042] Fig.11 for Fig.10 A schematic diagram of the enlarged structure at D;

[0043] Fig.12 for Fig.10 A schematic diagram of the enlarged structure at E;

[0044] Fig.13 A schematic diagram of the structure of a heat dissipation device provided in an embodiment of the present application;

[0045] Fig.14 for Fig.13 A partial enlarged structural schematic diagram of the heat dissipation device shown;

[0046] Fig.15 Another schematic diagram of the structure of the heat dissipation device provided in an embodiment of the present application;

[0047] Fig.16 for Fig.15 A partial enlarged structural schematic diagram of the heat dissipation device shown;

[0048] Fig.17 Another schematic diagram of the structure of the battery module provided in the embodiment of the present application;

[0049] Fig.18 for Fig.17 A partial enlarged structural schematic diagram of a battery module shown;

[0050] Fig.19 Another schematic diagram of the structure of the battery module provided in the embodiment of the present application;

[0051] Fig. 20 for Fig.19 A partial enlarged structural schematic diagram of the battery module is shown.

[0052] Reference numerals:

[0053] 1-bottom liquid cooling plate, 11-first flow port, 12-second flow port, 13-positioning groove, 2-vertical liquid cooling plate, 21-third flow port, 22-fourth flow port, 23-first flow channel area, 231-first liquid distribution cavity, 232-first flow channel, 233-first spoiler, 24-connecting flow channel, 25-second flow channel area, 251-second liquid distribution cavity, 252-second flow channel, 253-second spoiler, 26-positioning protrusion, 27-card slot, 3-battery module, 4-cable tie. DETAILED DESCRIPTION

[0054] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0055] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0056] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0057] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0058] In the description of this application, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] Refer to the following Figures 1 to 20 A heat dissipation device and a battery module according to some embodiments of the present application are described.

[0060] Embodiment 1

[0061] See also Figures 13 to 20 As shown, an embodiment of the present application provides a heat dissipation device, comprising: a bottom liquid cooling plate 1 and a vertical liquid cooling plate 2; wherein the vertical liquid cooling plate 2 is fixed to the upper surface of the bottom liquid cooling plate 1 and forms at least two installation spaces for installing a battery module 3;

[0062] The bottom liquid cooling plate 1 is formed with a first flow opening 11 and a second flow opening 12 , the vertical liquid cooling plate 2 is formed with a third flow opening 21 and a fourth flow opening 22 , and the second flow opening 12 and the third flow opening 21 are connected through a pipeline.

[0063] Based on the structure described above, it can be known that when the heat dissipation device provided in the present application is applied to a battery module, the multiple battery modules 3 included in the battery module are respectively installed in the corresponding installation spaces in the heat dissipation device. During cooling, the coolant can enter the bottom liquid cooling plate 1 through the first flow port 11 of the bottom liquid cooling plate 1, and pass through the flow channel of the bottom liquid cooling plate 1 and finally flow out from the second flow port 12, and then flow into the vertical liquid cooling plate 2 through the pipeline and the third flow port 21 in turn, and pass through the flow channel of the vertical liquid cooling plate 2 and finally flow out from the fourth flow port 22, flow into the coolant storage tank, and circulate again. The following text will also use this cycle sequence as an example to illustrate.

[0064] Of course, the circulation order of the coolant is not limited to the above, and it can also circulate along the fourth circulation port 22, the vertical liquid cooling plate 2, the third circulation port 21, the second circulation port 12, the bottom liquid cooling plate 1 and the first flow port in sequence, depending on the actual needs. In addition, the circulating liquid is not limited to low-temperature cooling liquid, but can also be high-temperature heat exchange liquid, etc., that is, it is not limited to cooling the battery module 3, but can also heat the battery module 3 in a low temperature environment, depending on the actual needs.

[0065] It can be seen that the vertical liquid cooling plate 2 provided in the present application is interspersed between the multiple battery modules 3 arranged in sequence, so that the battery module 3 in the middle position can be better cooled, and with the further assistance of the bottom liquid cooling plate 1, the heat exchange area and heat exchange efficiency of the battery module 3 are greatly improved, so that the life and charging and discharging power of the battery module 3 are enhanced, thereby improving the working performance of the battery and greatly reducing the probability of thermal runaway.

[0066] In this embodiment, preferably, Figure 1 and Fig.13 As shown, the number of bottom liquid cooling plates 1 is one, the number of vertical liquid cooling plates 2 is one, and preferably, the bottom liquid cooling plate 1 is rectangular, the vertical liquid cooling plate 2 is located on the midline of the bottom liquid cooling plate 1 along the length direction, and then installation spaces are formed on both sides of the vertical liquid cooling plate 2, respectively, and two battery modules 3 can be installed. It can be seen that a vertical liquid cooling plate 2 is sandwiched between the two battery modules 3, which improves the cooling effect. Of course, in order to further improve the cooling effect, vertical liquid cooling plates 2 can also be respectively arranged on the opposite sides of the two battery modules 3. That is to say, three vertical liquid cooling plates 2 are arranged in sequence to form two installation spaces.

[0067] It should be noted that the number of vertical liquid cooling plates 2 is not limited to one, and the number may be more than one, for example, two, three, four, five, etc., depending on the number of battery modules 3. In order to further improve the cooling effect, vertical liquid cooling plates 2 may be arranged in sequence along the arrangement of the battery modules 3 on the opposite sides of the first battery module 3 and the last battery module 3 to further improve the cooling effect.

[0068] In addition, when the bottom liquid cooling plate 1 is a rectangular plate, the vertical liquid cooling plate 2 is not limited to being arranged along the length direction of the bottom liquid cooling plate 1, but can also be arranged along the width direction of the bottom liquid cooling plate 1, or along other directions, and is specifically designed according to actual needs. Moreover, the shape of the aforementioned bottom liquid cooling plate 1 is not limited to being rectangular, but can also be other shapes, and is specifically designed according to actual needs.

[0069] In this embodiment, preferably, Figures 6 to 9 As shown, along the height direction of the vertical liquid cooling plate 2 and from bottom to top, the interior of the vertical liquid cooling plate 2 is formed with a first flow channel area 23 and a second flow channel area 25 which are arranged in sequence and at intervals, and the first flow channel area 23 and the second flow channel area 25 both extend along the length direction of the vertical liquid cooling plate 2;

[0070] Along the length direction of the vertical liquid cooling plate 2, a connecting flow channel 24 is formed inside one end of the vertical liquid cooling plate 2, and the connecting flow channel 24 extends along the height direction of the vertical liquid cooling plate 2; the first flow channel area 23 and the second flow channel area 25 are connected through the connecting flow channel 24. It can be seen that the first flow channel area 23, the connecting flow channel 24 and the second flow channel area 25 form a U-shaped cooling channel, and the coolant flows along this U-shaped cooling channel;

[0071] One end of the first flow channel region 23 away from the connecting flow channel 24 is connected to the first flow port 11 , and one end of the second flow channel region 25 away from the connecting flow channel 24 is connected to the fourth flow port 22 .

[0072] Based on the structure described above, it can be known that each battery module 3 includes a plurality of single cells arranged in sequence along the length direction of the battery module 3, that is, the length direction of the vertical liquid cooling plate 2. According to the arrangement order, taking the first single cell as an example, if the coolant flows in the order of first the bottom liquid cooling plate 1 and then the vertical liquid cooling plate 2, the temperature of the coolant contacted by the lower part of the first single cell is the lowest. After the coolant flows along the first flow channel area 23, the connecting flow channel 24 and the connecting flow channel 24, the temperature of the coolant contacted by the upper part of the first single cell is the highest. Therefore, for the first single cell, under the combined action of the lowest and highest coolants, it can be evenly cooled together with other single cells, thereby ensuring the uniformity of the overall temperature of the battery module 3 and helping to improve the working performance of the battery.

[0073] In this embodiment, preferably, Figure 7 and Figure 8 As shown, the first flow channel area 23 includes a first liquid distribution chamber 231 and a first flow channel 232 , and along the length direction of the vertical liquid cooling plate 2 , the first liquid distribution chamber 231 , the first flow channel 232 and the connecting flow channel 24 are sequentially connected; the first liquid distribution chamber 231 is connected to the third flow port 21 .

[0074] Furthermore, preferably, there are multiple first flow channels 232, and the multiple first flow channels 232 are arranged in sequence along the height direction of the vertical liquid cooling plate 2, and the two ends of each first flow channel 232 are respectively connected to the first liquid distribution chamber 231 and the connecting flow channel 24 to form parallel flow channels. The parallel flow channels have a small flow resistance, which accelerates the circulation of the coolant and further improves the cooling efficiency.

[0075] According to the structure described above, the coolant first enters the first liquid distribution chamber 231 with a relatively large space, and then is evenly distributed to each first flow channel 232 through the first liquid distribution chamber 231. Moreover, only a third flow port needs to be designed and a joint needs to be provided. The structure is simple, with fewer parts, which helps to reduce costs.

[0076] It should be noted that: the structure of the first liquid distribution chamber 231 can also be removed, that is, only the first flow channel 232 is retained, and a through hole is opened between the side walls of two adjacent first flow channels 232 to facilitate the coolant entering from the third flow port 21 and being transported to each flow channel respectively. Of course, this is not limited to this. A third flow port 21 can also be opened on each first flow channel 232, and the coolant discharged from the second flow port 12 can be transported to each third flow port 21 via a multi-way valve to ensure that each first flow channel 232 has coolant.

[0077] In this embodiment, preferably, Fig.10 and Fig.11 As shown, a first spoiler 233 is disposed in the first flow channel 232 .

[0078] According to the structure described above, the first spoiler 233 plays a role in disturbing the coolant in the first flow channel 232, which helps to improve the cooling effect.

[0079] In this embodiment, preferably, Figure 7 and Fig.11 As shown, the first spoiler 233 extends along the length direction of the first flow channel 232 and covers the entire length of the first flow channel 232, so that the coolant is disturbed at every point when passing through the first flow channel 232, thereby ensuring the uniformity of the disturbance.

[0080] Furthermore, preferably, the number of the first spoilers 233 is two, and they are symmetrically spaced about the center line of the first flow channel 232. Of course, this is not limited to this. The number of the first spoilers 233 can be one or more than two, such as three, four, etc., and the shape of the first spoiler 233 is not limited to this.

[0081] In this embodiment, preferably, Fig.11 As shown, the cross section of the first spoiler 233 along the length direction perpendicular to the first flow channel 232 is T-shaped.

[0082] According to the structure described above, the T-shaped first spoiler 233 has a transverse plate and a longitudinal plate, which can spoil the coolant in two directions, further improving the cooling effect.

[0083] Further, preferably, the vertical portion of the T-shaped first spoiler 233 is connected to the side wall of the first flow channel 232 to ensure the stability of the first spoiler 233. Of course, it is not limited to this, and only the horizontal portion of the T-shaped first spoiler 233 can also be connected to the side wall of the first flow channel 232.

[0084] It should be noted that the cross-sectional shape of the first spoiler 233 is not limited to the above, and may also be L-shaped, Z-shaped, etc.

[0085] In this embodiment, preferably, Figures 7 to 9 As shown, the second flow channel area 25 includes a second liquid distribution chamber 251 and a second flow channel 252, and along the length direction of the vertical liquid cooling plate 2, the second liquid distribution chamber 251, the second flow channel 252 and the connecting flow channel 24 are sequentially connected; the second liquid distribution chamber 251 is connected to the fourth flow port 22.

[0086] Further, preferably, Figure 8 and Fig. 9 As shown, there are multiple second flow channels 252, and the multiple second flow channels 252 are arranged in sequence along the height direction of the vertical liquid cooling plate 2, and the two ends of each second flow channel 252 are respectively connected to the second liquid distribution chamber 251 and the connecting flow channel 24 to form parallel flow channels. The parallel flow channels have a small flow resistance, which accelerates the circulation of the coolant and further improves the cooling efficiency.

[0087] According to the structure described above, the coolant discharged from each second flow channel 252 is gathered in the second liquid distribution chamber 251 and then discharged from a unified fourth flow port 22. The structure is simple, with fewer parts, which helps to reduce costs.

[0088] It should be noted that: the structure of the second liquid distribution chamber 251 can also be removed, that is, only the second flow channel 252 is retained, and a through hole is opened between the side walls of two adjacent second flow channels 252, so as to facilitate the liquid flowing out of each second flow channel 252 to be gathered together and discharged from a unified fourth flow port 22. Of course, it is not limited to this, and a fourth flow port 22 can also be opened on each second flow channel 252, so that the coolant in each second flow channel 252 can flow out from the corresponding fourth flow port 22.

[0089] In this embodiment, preferably, Fig.10 and Fig.12 As shown, a second spoiler 253 is disposed in the second flow channel 252 .

[0090] According to the structure described above, the second spoiler 253 plays a role in disturbing the coolant in the second flow channel 252, which helps to improve the cooling effect.

[0091] In this embodiment, preferably, Figure 7 and Fig.12 As shown, the second spoiler 253 extends along the length direction of the second flow channel 252 and covers the entire length of the second flow channel 252, so that the coolant is disturbed at every location when passing through the first flow channel 232, thereby ensuring the uniformity of the disturbance.

[0092] Furthermore, preferably, the number of the second spoilers 253 is two, and they are symmetrically spaced about the center line of the second flow channel 252. Of course, this is not limited to this. The number of the second spoilers 253 can be one or more than two, such as three, four, etc., and the shape of the second spoiler 253 is not limited to this.

[0093] In this embodiment, preferably, Fig.12 As shown, the cross section of the second spoiler 253 along the length direction perpendicular to the second flow channel 252 is T-shaped.

[0094] According to the structure described above, the T-shaped second spoiler 253 has a transverse plate and a longitudinal plate, which can spoil the coolant in two directions, further improving the cooling effect.

[0095] Further, preferably, the vertical portion of the T-shaped second spoiler 253 is connected to the side wall of the second flow channel 252 to ensure the stability of the second spoiler 253. Of course, not limited to this, only the horizontal portion of the T-shaped second spoiler 253 can also be connected to the side wall of the second flow channel 252.

[0096] It should be noted that the cross-sectional shape of the second spoiler 253 is not limited to the above, and may also be L-shaped, Z-shaped, etc.

[0097] In this embodiment, preferably, the vertical liquid cooling plate 2 is connected to the bottom liquid cooling plate 1 by welding, and the two are fixed together to increase the overall strength and firmness.

[0098] In this embodiment, preferably, Figure 1 , Figure 3 and Figure 4 As shown, a positioning groove 13 is formed at the bottom of the vertical liquid cooling plate 2 along its height direction, and a positioning protrusion 26 is formed on the upper surface of the bottom liquid cooling plate 1 , and the positioning protrusion 26 is installed in the positioning groove 13 .

[0099] According to the structure described above, through the cooperation between the positioning protrusion 26 and the positioning groove 13, the vertical liquid cooling plate 2 and the bottom liquid cooling plate 1 are quickly assembled and positioned, thereby accelerating the assembly speed.

[0100] Embodiment 2

[0101] See also Figures 17 to 20 As shown, the second embodiment of the present application also provides a battery module, including the heat dissipation device described in the above-mentioned first embodiment, and thus has all the beneficial technical effects of the heat dissipation device, and the same technical features and beneficial effects are not repeated.

[0102] In this embodiment, preferably, Figures 13 to 20 As shown, the battery module further includes a battery module 3, and a battery module 3 is installed in any installation space.

[0103] According to the structure described above, a vertical liquid cooling plate 2 is arranged between every two adjacent battery modules 3, and a bottom liquid cooling plate 1 is arranged at the bottom of the plurality of battery modules 3 arranged in sequence, thereby greatly improving the heat exchange area and heat exchange efficiency of the battery module 3, thereby enhancing the life and charge and discharge power of the battery module 3.

[0104] Further, preferably, the number of battery modules 3 is two, and they are respectively installed on both sides of the vertical liquid cooling plate 2. Of course, this is not limited to the above. The number of battery modules 3 may be more than two, such as three, four, five, etc. That is to say, the number of battery modules 3 is n, and is a positive integer greater than 2. Correspondingly, the number of vertical liquid cooling plates 2 is (n-1) or (n+1), and when the number of vertical liquid cooling plates 2 is (n-1), a vertical liquid cooling plate 2 is arranged between every two adjacent battery modules 3, and when the number of vertical liquid cooling plates 2 is (n+1), a vertical liquid cooling plate 2 is arranged between every two adjacent battery modules 3, and along the arrangement direction of the battery modules 3, a vertical liquid cooling plate 2 is also arranged on the opposite sides of the first battery module 3 and the last battery module 3, respectively.

[0105] In this embodiment, preferably, Figures 17 to 20 As shown, the battery module also includes a cable tie 4, and the battery module 3 and the vertical liquid cooling plate 2 are tied and fixed by the cable tie 4, thereby enhancing the rigidity of the module.

[0106] In this embodiment, preferably, the battery module 3 is bonded to the vertical liquid cooling plate 2, so that the entire battery module is more solid and the overall strength is improved.

[0107] Further, preferably, the cable ties 4 are used to bind and fix the battery module 3 and the vertical liquid cooling plate 2 along the periphery of the battery module 3 and the vertical liquid cooling plate 2, and the number of the cable ties 4 can be selected according to actual needs, for example: one, two or three, etc.

[0108] Further, preferably, a slot 27 is formed at one end of the vertical liquid cooling plate 2 along its length direction, and the cable tie 4 is clipped into the slot 27 , thereby playing a role of reinforcing the cable tie 4 .

[0109] In this embodiment, preferably, Figures 1 to 3 As shown, the battery module 3 is bonded to the bottom liquid cooling plate 1, making the entire battery module more solid and improving the overall strength.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat dissipation device, characterized in that: include: A bottom liquid cooling plate and a vertical liquid cooling plate; wherein the vertical liquid cooling plate is fixed to the upper surface of the bottom liquid cooling plate and forms at least two installation spaces for installing battery modules; The bottom liquid cooling plate is formed with a first flow opening and a second flow opening, the vertical liquid cooling plate is formed with a third flow opening and a fourth flow opening, and the second flow opening is connected to the third flow opening through a pipeline.

2. The heat dissipation device according to claim 1, characterized in that: Along the height direction of the vertical liquid cooling plate and from bottom to top, a first flow channel area and a second flow channel area are formed inside the vertical liquid cooling plate, which are arranged in sequence and at intervals, and the first flow channel area and the second flow channel area both extend along the length direction of the vertical liquid cooling plate.

3. The heat dissipation device according to claim 2, characterized in that: A connecting flow channel is formed inside one end of the vertical liquid cooling plate along the length direction of the vertical liquid cooling plate, and the connecting flow channel extends along the height direction of the vertical liquid cooling plate; the first flow channel area and the second flow channel area are connected through the connecting flow channel; One end of the first flow channel region away from the connecting flow channel is connected to the third flow port, and one end of the second flow channel region away from the connecting flow channel is connected to the fourth flow port.

4. The heat dissipation device according to claim 3, characterized in that: The first flow channel area includes a first flow channel and extends along the length direction of the vertical liquid cooling plate. The first flow channel is respectively connected to the third flow port and the connecting flow channel.

5. The heat dissipation device according to claim 4, characterized in that: The number of the first flow channels is multiple, and the multiple first flow channels are sequentially spaced along the height direction of the vertical liquid cooling plate to form parallel flow channels; The first flow channel area also includes a first liquid distribution cavity, and along the length direction of the vertical liquid cooling plate, the first liquid distribution cavity, the first flow channel and the connecting flow channel are sequentially connected; the first liquid distribution cavity is connected to the third flow port.

6. The heat dissipation device according to claim 4, characterized in that: A first spoiler is arranged in the first flow channel.

7. The heat dissipation device according to claim 6, characterized in that: The first spoiler extends along the length direction of the first flow channel and covers the entire length of the first flow channel; and / or A cross section of the first spoiler along a direction perpendicular to the length of the first flow channel is T-shaped.

8. The heat dissipation device according to claim 3, characterized in that: The second flow channel area includes a second flow channel and extends along the length direction of the vertical liquid cooling plate. The second flow channel is respectively connected to the fourth flow port and the connecting flow channel.

9. The heat dissipation device according to claim 8, characterized in that: The number of the second flow channels is multiple, and the multiple second flow channels are sequentially spaced along the height direction of the vertical liquid cooling plate to form parallel flow channels; The second flow channel area also includes a second liquid distribution chamber, and along the length direction of the vertical liquid cooling plate, the second liquid distribution chamber, the second flow channel and the connecting flow channel are sequentially connected; the second liquid distribution chamber is connected to the fourth flow port.

10. The heat dissipation device according to claim 9, characterized in that: A second spoiler is arranged in the second flow channel.

11. The heat dissipation device according to claim 10, characterized in that: The second spoiler extends along the length direction of the second flow channel and covers the entire length of the second flow channel; and / or A cross section of the second spoiler along a direction perpendicular to the length of the second flow channel is T-shaped.

12. The heat dissipation device according to claim 1, characterized in that: The vertical liquid cooling plate is connected to the bottom liquid cooling plate by welding; and / or A positioning groove is formed at the bottom of the vertical liquid cooling plate along its height direction, a positioning protrusion is formed on the upper surface of the bottom liquid cooling plate, and the positioning protrusion is installed in the positioning groove; and / or The number of the vertical liquid cooling plates is plural and they are sequentially spaced apart along a preset direction; and / or A slot is formed at one end of the vertical liquid cooling plate along its length direction.

13. A battery module, characterized in that: It comprises a battery module and the heat dissipation device as claimed in any one of claims 1 to 12, and the battery module is installed in any one of the installation spaces.

14. The battery module according to claim 13, characterized in that: The battery module further includes a cable tie, and the battery module and the vertical liquid cooling plate are fixed by tying the cable tie; and / or The battery module is bonded to the vertical liquid cooling plate; and / or The battery module is bonded to the bottom liquid cooling plate.

Images