Heat dissipation device and energy storage equipment

Abstract

The embodiment of the utility model discloses a heat dissipation device and energy storage equipment, and relates to the technical field of heat dissipation equipment.The heat dissipation device comprises a heat conduction plate and a supporting piece, a heat transfer runner is arranged in the heat conduction plate, the heat conduction plate is arranged in a bent mode, and the wall face, at the bent position, of the heat conduction plate is used for abutting against at least part of the outer wall of a battery cell for heat conduction; the supporting piece is arranged in the heat transfer runner and divides the heat transfer runner into at least two subdivision runners. According to the technical scheme provided by the embodiment of the invention, more comprehensive heat conduction and heat dissipation effects of the heat dissipation device on the battery cell are realized, and the heat dissipation efficiency and practicability of the heat dissipation device are improved.

Description

TECHNICAL FIELD

[0001] Embodiments in the present application relate to the technical field of heat dissipation devices, in particular to a heat dissipation device and an energy storage device. BACKGROUND

[0002] In the related art, a heat dissipation device can be arranged in an energy storage device, and the heat dissipation device can be in contact with a battery cell to exchange heat, so that the heat dissipation device can take away the heat generated on the battery cell, prevent the battery cell from overheating, and ensure the stable operation of the energy storage device.

[0003] However, the contact area between the heat dissipation device and the battery cell is usually small, so that the heat dissipation device cannot comprehensively dissipate heat from the whole battery cell, resulting in low heat dissipation efficiency of the heat dissipation device and reducing the practicability and reliability of the heat dissipation device. CONTENT OF THE INVENTION

[0004] Embodiments in the present application propose a heat dissipation device and an energy storage device, aiming to achieve a more comprehensive heat conduction and dissipation effect of the heat dissipation device on the battery cell and improve the heat dissipation efficiency and practicability of the heat dissipation device.

[0005] The heat dissipation device proposed in an embodiment in the present application includes a heat conduction plate and a support, the heat conduction plate is provided with a heat transfer channel, the heat conduction plate is arranged in a bent manner, and the wall surface at the bent portion of the heat conduction plate is used to abut and conduct heat with at least part of the outer wall of the battery cell; the support is arranged in the heat transfer channel and divides the heat transfer channel into at least two sub-channels.

[0006] In an embodiment, the heat conduction plate forms at least one accommodating groove, each of the accommodating grooves is used to accommodate one battery cell, and the inner wall of the accommodating groove abuts and conducts heat with the outer wall of the battery cell.

[0007] In an embodiment, the openings of the at least two accommodating grooves are arranged in sequence on one side of the heat conduction plate.

[0008] In an embodiment, the accommodating grooves include a first accommodating groove and a second accommodating groove, the opening of the first accommodating groove and the opening of the second accommodating groove are arranged on opposite sides of the heat conduction plate respectively, and the first accommodating groove and the second accommodating groove are arranged in sequence and staggered along the extension direction of the heat conduction plate.

[0009] In an embodiment, the heat conduction plate is arranged around the battery cell, the inner wall of the heat conduction plate abuts and conducts heat with the circumferential side of the battery cell, and opposite sides of the heat conduction plate are respectively provided with mounting openings.

[0010] In an embodiment, the heat conduction plate includes a first pipe segment and a second pipe segment, the first pipe segment and the second pipe segment are arranged side by side, the first pipe segment and the second pipe segment are in communication with each other, the first pipe segment is provided with a liquid inlet, and the second pipe segment is provided with a liquid outlet.

[0011] In an embodiment, the first pipe section is provided with a liquid inlet pipe head connected to one end of the first pipe section, the liquid inlet pipe head is provided with a flow distribution cavity, the flow distribution cavity is in communication with at least two sub-flow channels of the first pipe section, and the liquid inlet pipe head is provided with the liquid inlet port in communication with the flow distribution cavity.

[0012] In an embodiment, the second pipe section is provided with a liquid outlet pipe head connected to one end of the second pipe section, the liquid outlet pipe head is provided with a flow convergence cavity, the flow convergence cavity is in communication with at least two sub-flow channels of the second pipe section, and the liquid outlet pipe head is provided with the liquid outlet port in communication with the flow convergence cavity.

[0013] In an embodiment, the heat conduction plate further comprises a transition pipe connected to one end of the first pipe section and the second pipe section, and the transition pipe is in communication with the first pipe section and the second pipe section.

[0014] In an embodiment, the sub-flow channels have one or more of a square, triangular, hexagonal, or circular cross-sectional area.

[0015] One embodiment of the present application also provides an energy storage device, which comprises an electric core and a heat dissipation device, the heat dissipation device being the heat dissipation device described above, and the heat dissipation device is used to conduct heat and dissipate heat for the electric core.

[0016] In the plurality of embodiments provided by the present application, the heat conduction plate adopts a bent structure, the electric core is mounted at the bent part of the heat conduction plate, the electric core and the heat conduction plate can have a larger contact area, the heat conduction plate can be in contact with multiple surfaces of the electric core for heat conduction, the heat dissipation device can effectively achieve a more comprehensive and reliable heat dissipation effect on the electric core, the heat conduction plate is internally hollow to form a heat transfer flow channel, and the support member is arranged in the heat transfer flow channel to divide the heat transfer flow channel into at least two sub-flow channels, the structure strength and rigidity of the heat conduction plate can be better increased under the action of the support member, the heat conduction plate is effectively prevented from being deformed due to excessive load of the electric core, the refrigerant medium can stably flow in the at least two sub-flow channels to quickly take away the heat on the heat conduction plate, and the heat dissipation efficiency and reliability of the heat dissipation device are better improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the structures shown in the drawings.

[0018] Figure 1 Structure diagram of an embodiment of the heat dissipation device provided in the present application is shown in the following figure;

[0019] Figure 2 Structure diagram of an embodiment of the heat dissipation device provided in the present application is shown in the following figure; Figure 1 Structure exploded view of an embodiment of the heat dissipation device and the battery cell;

[0020] Figure 3 Structure diagram of an embodiment of the heat dissipation device provided in the present application is shown in the following figure; Figure 1 Partial structure diagram of an embodiment of the heat dissipation device provided in the present application is shown in the following figure;

[0021] Figure 4 Partial structure diagram of an embodiment of the heat dissipation device provided in the present application is shown in the following figure; Figure 3 Partial structure diagram of an embodiment of the heat dissipation device provided in the present application is shown in the following figure;

[0022] Figure 5 Structure diagram of another embodiment of the heat dissipation device provided in the present application is shown in the following figure;

[0023] Figure 6 Structure diagram of another embodiment of the heat dissipation device provided in the present application is shown in the following figure;

[0024] Figure 7 Cross-sectional view of an embodiment of the heat dissipation device provided in the present application at the liquid inlet pipe head and the liquid outlet pipe head.

[0025] Explanation of reference numerals:

[0026] 100, heat dissipation device; 10, heat conduction plate; 11, first pipe segment; 111, liquid inlet pipe head; 1111, liquid inlet; 1113, shunt cavity; 13, second pipe segment; 131, liquid outlet pipe head; 1311, liquid outlet; 1313, converging cavity; 15, transition pipe; 171, accommodating groove; 1711, first accommodating groove; 1713, second accommodating groove; 173, mounting port; 19, subdivided shunt; 30, support; 200, battery cell. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0028] It should be noted that if the directionality indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of the present application, the directionality indication is only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directionality indication also changes accordingly.

[0029] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0030] In the related art, the heat dissipation device can be provided in the energy storage device, and the heat dissipation device can be in contact with the battery cell to exchange heat, so that the heat dissipation device can take away the heat generated on the battery cell, prevent the battery cell from overheating, and ensure the stable operation of the energy storage device. However, the contact area between the heat dissipation device and the battery cell is mostly small, so that the heat dissipation device cannot more comprehensively dissipate heat to the whole battery cell, resulting in low heat dissipation efficiency of the heat dissipation device, reducing the practicability and reliability of the heat dissipation device. In view of the above problem, the present application provides a heat dissipation device 100.

[0031] Please refer to Figures 1 to 7 In an embodiment of the present application, the heat dissipation device 100 includes a heat conduction plate 10 and a support 30. The heat conduction plate 10 is provided with a heat transfer channel, and the heat conduction plate 10 is bent. The wall surface of the bent part of the heat conduction plate 10 is used to abut and conduct heat with at least part of the outer wall of the battery cell 200. The support 30 is arranged in the heat transfer channel and divides the heat transfer channel into at least two sub-channels 19.

[0032] It can be understood that the battery cell 200 of the energy storage device is easy to generate a certain amount of heat when performing charging or discharging actions. The heat dissipation device 100 is usually arranged on one side of the battery cell 200, which is mostly arranged in a flat plate structure to make the heat generated on the battery cell 200 conduct to the heat dissipation device 100 for heat dissipation, avoiding the battery cell 200 from overheating and affecting the stable operation of the energy storage device. However, the flat plate heat dissipation device 100 is in contact with the battery cell 200 for heat conduction, which can only make one side of the battery cell 200 get better heat conduction and heat dissipation, resulting in low heat dissipation efficiency of the other surfaces of the battery cell 200, and further resulting in poor overall heat dissipation effect of the heat dissipation device 100 on the battery cell 200.

[0033] In the present application, by adopting the structure of the hollow heat-conducting plate 10, the heat-conducting plate 10 can form a structure similar to a "U" shape, a square shape, or a cylindrical shape, and of course, the heat-conducting plate 10 can also be arranged in other irregular shapes, and the present application does not limit the specific shape of the heat-conducting plate 10. When the battery cell 200 is installed in the heat-conducting plate 10, the heat-conducting plate 10 can contact the three side surfaces of the battery cell 200 by using the structure of the wall surface at the bending part, or the heat-conducting plate 10 can be arranged to wrap the circumferential side of the battery cell 200, so that the heat-conducting plate 10 can abut against at least part of the outer wall of the battery cell 200 for heat conduction, effectively increasing the contact area between the heat-conducting plate 10 and the battery cell 200. The heat-conducting plate 10 can form a heat transfer channel on the inner wall, and by passing the refrigerant medium into the heat transfer channel, the heat-conducting plate 10 can effectively increase the contact area with the battery cell 200, effectively improve the heat conduction efficiency of the heat-conducting plate 10 and the battery cell 200, and utilize the flow of the refrigerant medium in the heat transfer channel to take away the heat on the heat-conducting plate 10, which can realize more rapid and comprehensive heat dissipation effect of the heat dissipation device 100 on the battery cell 200, effectively avoid uneven heat dissipation of the heat dissipation device 100 on the battery cell 200, and improve the heat dissipation efficiency and practicality of the heat dissipation device 100.

[0034] In addition, the heat-conducting plate 10 can be arranged in a flat heat-conducting flat tube structure to increase the contact area of the heat-conducting plate 10 with the battery cell 200, and to achieve better heat dissipation effect of the heat dissipation device 100. At this time, by arranging the support 30 in the heat transfer channel of the heat-conducting plate 10, the support 30 can be used to separate the heat transfer channel into at least two sub-channels 19, and the refrigerant medium can be passed into the at least two sub-channels 19 at the same time, which can ensure stable heat conduction and heat dissipation of the heat-conducting plate 10, and under the action of the support 30, the overall structural strength and rigidity of the heat-conducting plate 10 can be better improved, so that the heat-conducting plate 10 can better bear the load of the battery cell 200, effectively avoid the heat-conducting plate 10 from being deformed and having a certain probability of blocking the heat transfer channel, ensure stable heat dissipation effect of the heat dissipation device 100 on the battery cell 200, and further improve the structural stability and reliability of the heat dissipation device 100.

[0035] In addition, the heat-conducting plate 10 can be arranged in a flat heat-conducting flat tube structure to increase the contact area of the heat-conducting plate 10 with the battery cell 200, and to achieve better heat dissipation effect of the heat dissipation device 100. At this time, by arranging the support 30 in the heat transfer channel of the heat-conducting plate 10, the support 30 can be used to separate the heat transfer channel into at least two sub-channels 19, and the refrigerant medium can be passed into the at least two sub-channels 19 at the same time, which can ensure stable heat conduction and heat dissipation of the heat-conducting plate 10, and under the action of the support 30, the overall structural strength and rigidity of the heat-conducting plate 10 can be better improved, so that the heat-conducting plate 10 can better bear the load of the battery cell 200, effectively avoid the heat-conducting plate 10 from being deformed and having a certain probability of blocking the heat transfer channel, ensure stable heat dissipation effect of the heat dissipation device 100 on the battery cell 200, and further improve the structural stability and reliability of the heat dissipation device 100.

[0036] In one embodiment of the present application, by arranging the heat-conducting plate 10 in a bent structure, the battery cell 200 can be installed at the bending part of the heat-conducting plate 10, so that the battery cell 200 and the heat-conducting plate 10 can have a larger contact area, and the heat-conducting plate 10 can be in contact with multiple surfaces of the battery cell 200 for heat conduction, so as to effectively achieve a more comprehensive and reliable heat dissipation effect of the heat dissipation device 100 on the battery cell 200. Meanwhile, by forming a heat transfer channel in the hollow interior of the heat-conducting plate 10, and arranging the support 30 to divide the heat transfer channel into at least two sub-channels 19, the structural strength and rigidity of the heat-conducting plate 10 can be better increased under the action of the support 30, so as to effectively avoid the heat-conducting plate 10 from being deformed due to excessive load of the battery cell 200, so that the refrigerant medium can flow stably in the at least two sub-channels 19 to quickly take away the heat on the heat-conducting plate 10, and the heat dissipation efficiency and reliability of the heat dissipation device 100 can be better improved.

[0037] Referring to Figure 2 and Figure 5 In one embodiment of the present application, the heat-conducting plate 10 forms at least one accommodating groove 171, and one accommodating groove 171 is used to accommodate one battery cell 200, and the inner wall of the accommodating groove 171 is in abutment with the outer wall of the battery cell 200 for heat conduction.

[0038] In the present embodiment, the heat-conducting plate 10 can have a structure arranged in multiple bent sections, or the heat-conducting plate 10 can be provided with multiple raised branch pipe structures on the plate surface, so that the heat-conducting plate 10 can form at least one accommodating groove 171, so that one battery cell 200 can be accommodated and installed in one accommodating groove 171, and the inner wall of each accommodating groove 171 can contact multiple outer surfaces of the battery cell 200, so as to effectively increase the contact area of the heat-conducting plate 10 and each battery cell 200, and achieve a more rapid heat conduction and dissipation effect of the heat-conducting plate 10 on multiple battery cells 200, and better improve the overall heat dissipation efficiency of the heat dissipation device 100. Among them, the accommodating groove 171 can be arranged with an open slot on one side of the heat-conducting plate 10, so that the battery cell 200 can be better installed into the accommodating groove 171 through the slot of the accommodating groove 171; or, the heat-conducting plate 10 can be provided with an insertion opening penetrating the inner side wall of the accommodating groove 171 on opposite sides, so that the battery cell 200 can be installed into the accommodating groove 171 by horizontally passing through the insertion opening, to achieve convenient installation of the battery cell 200 and the heat dissipation device 100, and further improve the practicality and reliability of the heat dissipation device 100.

[0039] Referring to Figure 5 In one embodiment of the present application, the slots of the at least two accommodating grooves 171 are arranged in sequence on one side of the heat-conducting plate 10.

[0040] In the embodiment, the heat-conducting plate 10 can have the slots of the at least two accommodation grooves 171 all open on the same side of the heat-conducting plate 10 and arranged in sequence along the extension direction of the heat-conducting plate 10, and then the plurality of battery cells 200 can be sequentially inserted and mounted on one side of the heat-conducting plate 10, which is conducive to better improving the assembly convenience of the heat dissipation device 100 and the battery cells 200. In addition, by arranging the slots of the plurality of accommodation grooves 171 on the same side of the heat-conducting plate 10, it is also convenient to arrange the cover plate on one side of the heat-conducting plate 10 to cover the plurality of accommodation grooves 171, so that the heat generated by the battery cells 200 can be more stably conducted to the heat-conducting plate 10 for heat dissipation, further improving the practicability and reliability of the heat dissipation device 100.

[0041] Referring to Figure 2 In an embodiment of the present application, the accommodation groove 171 includes a first accommodation groove 1711 and a second accommodation groove 1713, and the slots of the first accommodation groove 1711 and the second accommodation groove 1713 are respectively arranged on opposite sides of the heat-conducting plate 10. The first accommodation groove 1711 and the second accommodation groove 1713 are arranged in sequence and staggered along the extension direction of the heat-conducting plate 10.

[0042] In the embodiment, the heat-conducting plate 10 can be arranged in a multi-segment bending pipe structure similar to a serpentine pipe, so that the heat-conducting plate 10 can form the first accommodation groove 1711 and the second accommodation groove 1713 staggered on opposite sides. The pipe structure with this shape can make the heat-conducting plate 10 more convenient and reliable to produce, and at the same time, the flow direction in the heat transfer flow channel can be smoother, which is conducive to better improving the heat dissipation efficiency of the heat dissipation device 100. At this time, a plurality of slots of the first accommodation groove 1711 can be arranged at a certain interval on one side of the heat-conducting plate 10, and a plurality of slots of the second accommodation groove 1713 can be arranged at a certain interval on the other side of the heat-conducting plate 10, so that the battery cells 200 can be more conveniently installed into the first accommodation groove 1711 and the second accommodation groove 1713 from the slots on opposite sides of the heat-conducting plate 10, better improving the assembly convenience and reliability of the heat dissipation device 100 and the battery cells 200.

[0043] Referring to Figure 6 In an embodiment of the present application, the heat-conducting plate 10 is arranged around the battery cell 200, the inner wall of the heat-conducting plate abuts against the peripheral side of the battery cell 200 for heat conduction, and the opposite sides of the heat-conducting plate 10 are respectively provided with mounting openings 173.

[0044] In the embodiment, the heat-conducting plate 10 can be bent to form a pipe structure in a ring shape, and then can be arranged to wrap the circumferential surface of the battery cell 200, so that the heat-conducting plate 10 can be in more comprehensive contact with the battery cell 200 for heat conduction, and better reduce the unevenness of heat dissipation of the battery cell 200, and further improve the heat dissipation efficiency and effect of the heat dissipation device 100 on the battery cell 200. At this time, the heat-conducting plate 10 can be bent to form a plurality of annular cavities, and the plurality of cavities are arranged independently along the extension direction of the heat-conducting plate 10, which is beneficial to accommodate and install a plurality of battery cells 200 in the heat-conducting plate 10 respectively, and ensure the stable and reliable heat dissipation of the heat dissipation device 100 on the plurality of battery cells 200. The heat-conducting plate 10 can be provided with mounting ports 173 on opposite sides, so that the battery cell 200 can be inserted and mounted into the heat-conducting plate 10 through the mounting ports 173, so that the heat-conducting plate 10 can wrap the battery cell 200 for heat conduction, and ensure the stable assembly of the heat dissipation device 100 and the battery cell 200, and further improve the practicability and structural reliability of the heat dissipation device 100.

[0045] Referring to Figure 2 , Figure 5 and Figure 6 , in an embodiment of the present application, the heat-conducting plate 10 includes a first pipe segment 11 and a second pipe segment 13, the first pipe segment 11 and the second pipe segment 13 are arranged side by side, the first pipe segment 11 and the second pipe segment 13 are in communication with each other, the first pipe segment 11 is provided with a liquid inlet 1111, and the second pipe segment 13 is provided with a liquid outlet 1311.

[0046] In the embodiment, the heat-conducting plate 10 can include the first pipe segment 11 and the second pipe segment 13 arranged side by side, and heat transfer channels can be arranged in the first pipe segment 11 and the second pipe segment 13. The heat transfer channels in the first pipe segment 11 and the second pipe segment 13 can be divided into at least two sub-channels 19 by the support 30, so that the first pipe segment 11 and the second pipe segment 13 can respectively supply refrigerant medium to flow, and ensure the stable operation of the heat dissipation device 100.

[0047] Further, by connecting the first pipe segment 11 and the second pipe segment 13, and arranging the liquid inlet 1111 on the first pipe segment 11 and the liquid outlet 1311 on the second pipe segment 13, the refrigerant medium with lower temperature can be injected into the first pipe segment 11 from the liquid inlet 1111, and after filling the first pipe segment 11, the refrigerant medium can flow into the second pipe segment 13, and then after filling the second pipe segment 13, the refrigerant medium can flow out from the liquid outlet 1311, realizing the circulation flow and heat transfer of the refrigerant medium, so that the refrigerant medium can take away the heat on the first pipe segment 11 and the second pipe segment 13 in the flow process, and ensure the stable operation of the heat dissipation device 100.

[0048] Therefore, by using the same bent pipe segment structure for the first pipe segment 11 and the second pipe segment 13, the bent structure on the first pipe segment 11 and the bent structure of the second pipe segment 13 can be connected side by side, so that the battery cell 200 can be in contact with the first pipe segment 11 and the second pipe segment 13 at the same time, so that the refrigerant medium flowing in the first pipe segment 11 can take away part of the heat transferred to the first pipe segment 11 by the battery cell 200 structure, and the refrigerant medium flowing in the second pipe segment 13 can take away another part of the heat transferred to the second pipe segment 13 by the battery cell 200 structure, which is beneficial to fully utilize the refrigerant medium to conduct heat and dissipate heat for the battery cell 200, and further improve the refrigerant utilization rate and heat dissipation efficiency of the heat dissipation device 100.

[0049] In the present application, the two ends of the battery cell 200 are usually divided into a pole end and a pressure relief valve end, the pole end is used to be electrically connected with the charge and discharge module of the energy storage device, and then the heat generated by the part of the battery cell 200 structure near the pole end is larger, and the heat generated by the part of the battery cell 200 structure near the pressure relief valve end is smaller, and then when the heat dissipation device 100 is assembled with the battery cell 200, the part of the battery cell 200 structure near the pole end is installed in the first pipe segment 11, and the part of the battery cell 200 structure near the pressure relief valve end is installed in the second pipe segment 13, and then the heat conducted to the first pipe segment 11 by the battery cell 200 can be quickly taken away by the refrigerant medium with lower temperature injected into the first pipe segment 11, and the remaining heat conducted to the second pipe segment 13 by the battery cell 200 can be taken away by the refrigerant medium flowing from the first pipe segment 11 to the second pipe segment 13, which is beneficial to realize the rapid heat conduction and dissipation effect of the heat dissipation device 100 on the battery cell 200, and further improve the practicability and reliability of the heat dissipation device 100.

[0050] Referring to Figure 3 and Figure 7 In an embodiment of the present application, the first pipe segment 11 is provided with a liquid inlet pipe head 111 connected to one end of the first pipe segment 11, the liquid inlet pipe head 111 is provided with a shunt cavity 1113, the shunt cavity 1113 is in communication with at least two shunt channels 19 of the first pipe segment 11, and the liquid inlet pipe head 111 is provided with a liquid inlet 1111 in communication with the shunt cavity 1113.

[0051] In the embodiment, the heat transfer channel of the first pipe segment 11 can be divided into at least two sub-channels 19 by the support 30. By installing the liquid inlet pipe head 111 at one end of the first pipe segment 11, the sub-flow cavity 1113 in the liquid inlet pipe head 111 can be communicated with the at least two sub-channels 19. Then, by providing the liquid inlet 1111 on the liquid inlet pipe head 111, the refrigerant medium can flow into the sub-flow cavity 1113 from the liquid inlet 1111 first, and then be distributed into each sub-channel 19. This is beneficial to better ensure that the refrigerant medium can be stably introduced into each sub-channel 19 of the first pipe segment 11, and can better improve the consistency of the flow rate and flow of the refrigerant medium in each sub-channel 19, thereby ensuring uniform heat conduction of the first pipe segment 11 to the battery cell 200 and further improving the heat dissipation efficiency and reliability of the heat dissipation device 100 to the battery cell 200.

[0052] Referring to Figure 3 and Figure 7 In an embodiment of the present application, the second pipe segment 13 is provided with a liquid outlet pipe head 131 connected to one end of the second pipe segment 13. The liquid outlet pipe head 131 is provided with a flow converging cavity 1313 communicated with the at least two sub-channels 19 of the second pipe segment 13. The liquid outlet pipe head 131 is provided with a liquid outlet 1311 communicated with the flow converging cavity 1313.

[0053] In the embodiment, the heat transfer channel of the second pipe segment 13 can be divided into at least two sub-channels 19 by the support 30. By installing the liquid outlet pipe head 131 at one end of the second pipe segment 13, the flow converging cavity 1313 in the liquid outlet pipe head 131 can be communicated with the at least two sub-channels 19. Then, the refrigerant medium flowing in the plurality of sub-channels 19 of the second pipe segment 13 can flow into the flow converging cavity 1313 and be converged, and then be discharged from the liquid outlet 1311 of the liquid outlet pipe head 131. This is beneficial to better improve the liquid discharge efficiency of the second pipe segment 13 under the action of the liquid outlet pipe head 131, reduce the size of the pipe for discharging the refrigerant medium of the heat dissipation device 100, better realize the installation and arrangement of the heat dissipation device 100 in the energy storage equipment, and further improve the practicability and reliability of the heat dissipation device 100.

[0054] Referring to Figure 2 , Figure 5 and Figure 6 In an embodiment of the present application, the heat conduction plate 10 further comprises a transition pipe 15 connected to one end of the first pipe segment 11 and the second pipe segment 13, and the transition pipe 15 is communicated with the first pipe segment 11 and the second pipe segment 13.

[0055] In the embodiment, the heat-conducting plate 10 can be provided with the liquid inlet 1111 and the liquid outlet 1311 at one end of the first pipe section 11 and the second pipe section 13, respectively, and at the other end of the first pipe section 11 and the second pipe section 13, the transition pipe 15 can be provided to communicate the first pipe section 11 and the second pipe section 13, so that the refrigerant medium can be filled into the first pipe section 11 through the liquid inlet 1111, and then flow into the second pipe section 13 through the transition pipe 15, thereby forming a pipe section structure similar to a "U" shape under the communication of the transition pipe 15, which is beneficial to conveniently arranging the input pipe and the return pipe of the refrigerant medium on one side of the heat-conducting plate 10, ensuring the circulation of the refrigerant medium, and further improving the assembly convenience and practicality of the heat dissipation device 100.

[0056] In an embodiment of the present application, the cross-sectional area of the subdivided flow channel 19 is one or more of a square, a triangle, a hexagon, and a circle.

[0057] In the embodiment, by adjusting the shape of the support 30, the cross-sectional shape of the subdivided flow channel 19 can be a square, a triangle, a hexagon, a circle, or other types of flow channel structures, so that the heat-conducting plate 10 can achieve a more stable and reliable structure, while better ensuring the flow space required for the refrigerant medium flowing in the subdivided flow channel 19, better preventing the heat-conducting plate 10 from being blocked, and further improving the overall structural stability and reliability of the heat dissipation device 100.

[0058] Among them, at least two subdivided flow channels 19 in the heat-conducting plate 10 can be arranged with the same cross-sectional shape, or at least two subdivided flow channels 19 in the heat-conducting plate 10 can be arranged with different cross-sectional shapes, so that users can choose the corresponding structure of the heat-conducting plate 10 according to the installation layout and load-bearing requirements of the energy storage device, and better improve the practicality and reliability of the heat dissipation device 100.

[0059] The present application also provides an energy storage device, which comprises an electric core 200 and a heat dissipation device 100. The specific structure of the heat dissipation device 100 is referred to the above-mentioned embodiments. Since the energy storage device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0060] The above-mentioned is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A heat dissipation device, characterized in that, include: A heat-conducting plate, wherein a heat transfer channel is provided in the heat-conducting plate, the heat-conducting plate is bent, and the wall surface of the heat-conducting plate at the bend is used to abut against at least a portion of the outer wall of the battery cell for heat conduction; A support member is disposed within the heat transfer channel and divides the heat transfer channel into at least two sub-channels.

2. The heat dissipation device as described in claim 1, characterized in that, The heat-conducting plate forms at least one receiving groove, each receiving groove being used to receive a battery cell, and the inner wall of the receiving groove is in contact with the outer wall of the battery cell for heat conduction.

3. The heat dissipation device as described in claim 2, characterized in that, At least two of the receiving slots are arranged sequentially on one side of the heat-conducting plate.

4. The heat dissipation device as described in claim 2, characterized in that, The receiving groove includes a first receiving groove and a second receiving groove. The openings of the first receiving groove and the second receiving groove are respectively located on opposite sides of the heat-conducting plate. The first receiving groove and the second receiving groove are arranged alternately along the extension direction of the heat-conducting plate.

5. The heat dissipation device as described in claim 1, characterized in that, The heat-conducting plate is arranged around the battery cell, and the inner wall of the heat-conducting plate abuts against the periphery of the battery cell for heat conduction. The heat-conducting plate has mounting holes on opposite sides.

6. The heat dissipation device as described in any one of claims 1 to 5, characterized in that, The heat-conducting plate includes a first pipe section and a second pipe section, which are arranged side by side and are interconnected. The first pipe section is provided with a liquid inlet and the second pipe section is provided with a liquid outlet.

7. The heat dissipation device as described in claim 6, characterized in that, The first pipe section is provided with an inlet pipe head, which is connected to one end of the first pipe section. The inlet pipe head is provided with a flow divider cavity, which is connected to at least two subdivided flow channels of the first pipe section. The inlet pipe head is provided with an inlet port, which is connected to the flow divider cavity.

8. The heat dissipation device as described in claim 6, characterized in that, The second pipe section is provided with a liquid outlet head, which is connected to one end of the second pipe section. The liquid outlet head is provided with a manifold cavity, which is connected to at least two subdivided flow channels of the second pipe section. The liquid outlet head is provided with a liquid outlet, which is connected to the manifold cavity.

9. The heat dissipation device as described in claim 6, characterized in that, The heat-conducting plate also includes a transition tube, which is connected to one end of the first pipe segment and the second pipe segment, and the transition tube connects the first pipe segment and the second pipe segment.

10. The heat dissipation device as described in any one of claims 1 to 5, characterized in that, The cross-sectional area of ​​the subdivided flow channel is one or more of the following: square, triangular, hexagonal, and circular.

11. An energy storage device, characterized in that, The energy storage device includes a battery cell and a heat dissipation device, wherein the heat dissipation device is any one of claims 1 to 10, and the heat dissipation device is used to conduct heat and dissipate heat from the battery cell.

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