Heat dissipation structure and energy storage equipment

Abstract

The embodiment of the utility model discloses an energy storage heat dissipation structure and an energy storage device, in the heat dissipation structure, a lower shell is provided with a liquid inlet, a flow channel, a liquid outlet, a diversion port and a confluence port, and the liquid inlet, the flow channel and the liquid outlet are communicated to form a first fluid passage; the liquid inlet, the shunting port, the first liquid cooling plate, the confluence port and the liquid outlet are communicated to form a second fluid passage; the plurality of second liquid cooling plates are oppositely arranged at intervals, an accommodating space is formed between any two adjacent second liquid cooling plates, and the accommodating space is used for accommodating a battery cell; one liquid cooling pipe is located between two adjacent second liquid cooling plates and is arranged on one side surface of the battery cell, the plurality of liquid cooling pipes are used for communicating the plurality of second liquid cooling plates to form a fluid pipeline, and the liquid inlet, the shunting port, the fluid pipeline, the confluence port and the liquid outlet are communicated to form a third fluid passage. Through the mode, the first fluid passage, the second fluid passage and the third fluid passage are in contact with different surfaces of the battery cell respectively, so that the heat exchange area of the battery cell is enlarged, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a heat dissipation structure and energy storage device. Background Technology

[0002] Energy storage devices are devices that store and release energy by converting it from one form to another.

[0003] As energy storage devices continue to evolve towards larger capacity, higher efficiency, and lower cost, the high-temperature heating of the battery cells is intensifying. For example, during the charging and discharging of large-capacity energy storage devices at high charge / discharge rates, the battery cells generate significant heat. To dissipate this heat promptly and prevent thermal runaway, liquid cooling structures are typically installed to exchange heat with the battery cells. However, during heat dissipation, the battery cells usually only contact the liquid cooling structure on one side, limiting the heat exchange area and reducing the heat dissipation efficiency. Utility Model Content

[0004] The present invention aims to provide a heat dissipation structure and energy storage device that can improve heat dissipation efficiency.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this utility model embodiment is: providing a heat dissipation structure, including a lower shell, a first liquid cooling plate, a plurality of second liquid cooling plates, and a plurality of liquid cooling pipes; the lower shell is provided with a liquid inlet, a flow channel, a liquid outlet, a branch port, and a confluence port, the liquid inlet, the flow channel, and the liquid outlet being sequentially connected to form a first fluid passage for coolant flow, the branch port being connected between the liquid inlet and the flow channel, and the confluence port being connected between the flow channel and the liquid outlet; the first liquid cooling plate is disposed above the lower shell, and the liquid inlet, the branch port, the first liquid cooling plate, the confluence port, and the liquid outlet are sequentially connected to form a first fluid passage. A second fluid passage for coolant flow is formed; a plurality of second liquid cooling plates are arranged at intervals and located between the lower shell and the first liquid cooling plate, and a receiving space is formed between any two adjacent second liquid cooling plates, the receiving space being used to receive the battery cell located between the lower shell and the first liquid cooling plate; a liquid cooling pipe is located between two adjacent second liquid cooling plates and disposed on one side of the battery cell, and a plurality of liquid cooling pipes are used to connect the plurality of second liquid cooling plates and form a fluid conduit; the liquid inlet, the branch port, the fluid conduit, the confluence port and the liquid outlet are sequentially connected to form a third fluid passage for coolant flow.

[0006] Optionally, the flow channel of the lower shell extends in a serpentine pattern; and / or, the first liquid cooling plate extends in a serpentine pattern; and / or, the fluid channel formed by a plurality of second liquid cooling plates and a plurality of liquid cooling pipes extends in a serpentine pattern.

[0007] Optionally, the heat dissipation structure further includes a heat-conducting component disposed between the first liquid cooling plate and the second liquid cooling plate. The heat-conducting component abuts against the first liquid cooling plate, and the side of the heat-conducting component facing away from the first liquid cooling plate is used to abut against the battery cell when the battery cell is housed in the housing space.

[0008] Optionally, the heat dissipation structure includes a first adhesive component, which is disposed between the first liquid cooling plate and the heat-conducting component, and the first adhesive component bonds the first liquid cooling plate and the heat-conducting component together.

[0009] Optionally, the heat dissipation structure includes a second adhesive member, which is disposed on the side of the heat-conducting component away from the first liquid cooling plate. One side of the second adhesive member is bonded to the side of the heat-conducting component away from the first liquid cooling plate, and the other side of the second adhesive member is used to bond the heat-conducting component to the battery cell when the battery cell is housed in the housing space.

[0010] Optionally, the heat dissipation structure includes a third adhesive member disposed on the side of the second liquid cooling plate facing the receiving space. One side of the third adhesive member is bonded to the side of the second liquid cooling plate facing the receiving space, and the other side of the third adhesive member is used to bond the second liquid cooling plate to the battery cell when the battery cell is received in the receiving space.

[0011] Optionally, the heat dissipation structure includes a sealing member, one end of which is connected to the lower shell and the other end of which is connected to the end of the second liquid cooling plate. The sealing member is used to seal the gap between the second liquid cooling plate and the battery cell when the battery cell is housed in the housing space.

[0012] Optionally, the sealing component includes a support portion, a first sealing portion, and a second sealing portion. The support portion is connected to the lower shell. One end of the first sealing portion and one end of the second sealing portion are both connected to the end of the support portion away from the lower shell. The other ends of the first sealing portion and the second sealing portion extend in a direction away from the support portion. Furthermore, slots are formed at intervals between the other ends of the first sealing portion and the other ends of the second sealing portion, and the end of the second liquid cooling plate is inserted into the slot.

[0013] Optionally, the second liquid cooling plate includes a flow channel plate, two flow channel tubes, and two liquid cooling connectors. The two ends of the flow channel plate are respectively connected to the two flow channel tubes, and one of the flow channel tubes is connected to one of the liquid cooling connectors. The liquid cooling connectors are used to connect to the liquid cooling tubes.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this utility model embodiment is: to provide an energy storage device, including the above-mentioned heat dissipation structure, upper shell and energy storage component, the energy storage component including a plurality of battery cells, the upper shell and the lower shell being detachably connected, the first liquid cooling plate, a plurality of second liquid cooling plates and a plurality of liquid cooling pipes being disposed inside the upper shell, the liquid inlet and the liquid outlet being disposed outside the upper shell, and one of the battery cells being disposed in one of the receiving spaces.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike the prior art, this utility model embodiment provides a heat dissipation structure, including a lower shell, a first liquid cooling plate, several second liquid cooling plates, and several liquid cooling pipes; the lower shell is provided with an inlet, a flow channel, an outlet, a branch port, and a confluence port. The inlet, flow channel, and outlet are sequentially connected to form a first fluid passage for coolant flow. The branch port is connected between the inlet and the flow channel, and the confluence port is connected between the flow channel and the outlet; the first liquid cooling plate is disposed above the lower shell, and the inlet, branch port, confluence port, and outlet are also provided. A second fluid passage for coolant flow is formed by sequentially connecting the components; several second liquid cooling plates are arranged at intervals and located between the lower shell and the first liquid cooling plate, and a receiving space is formed between any two adjacent second liquid cooling plates. The receiving space is used to receive the battery cell located between the lower shell and the first liquid cooling plate; a liquid cooling pipe is located between two adjacent second liquid cooling plates and is disposed on one side of the battery cell. Several liquid cooling pipes are used to connect several second liquid cooling plates and form a fluid pipe. The inlet, the branch port, the fluid pipe, the confluence port and the outlet are sequentially connected to form a third fluid passage for coolant flow.

[0016] In this way, the first fluid passage, the second fluid passage, and the third fluid passage contact different surfaces of the battery cell, that is, the first fluid passage contacts the bottom surface of the battery cell, the second fluid passage contacts the top surface of the battery cell, and the third fluid passage contacts the side surface of the battery cell, thereby achieving multi-faceted contact, expanding the heat exchange area of ​​the battery cell, and improving heat dissipation efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this utility model or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0018] Figure 1This is a schematic diagram of the overall structure of the heat dissipation structure provided in this embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the lower shell of the heat dissipation structure provided in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the first fluid passage of the heat dissipation structure provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the second fluid passage of the heat dissipation structure provided in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the third fluid passage of the heat dissipation structure provided in this embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the heat-conducting component of the heat dissipation structure provided in this embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the heat dissipation structure provided in this embodiment of the present invention, which houses the battery cell within its receiving space.

[0025] Figure 8 This is a partial structural schematic diagram of the heat dissipation structure provided in an embodiment of the present utility model;

[0026] Figure 9 This is a schematic diagram of the sealing component of the heat dissipation structure provided in this embodiment of the utility model;

[0027] Figure 10 This is a schematic diagram of the overall structure of the energy storage device provided in this embodiment of the utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Lower shell, 11. Liquid inlet, 12. Flow channel, 13. Liquid outlet, 14. Flow divider, 15. Manifold;

[0030] 2. First liquid cooling plate;

[0031] 3 Second liquid cooling plate, 31 Containment space, 32 Flow channel plate, 33 Flow channel tube, 34 Liquid cooling connector;

[0032] 4 liquid cooling pipes;

[0033] 51 First fluid passage, 52 Second fluid passage, 53 Third fluid passage;

[0034] 6 thermal conductive components;

[0035] 7. Sealing component, 71. Support part, 72. First sealing part, 73. Second sealing part, 74. Slot;

[0036] 100 heat dissipation structure, 200 upper shell, 300 energy storage components, 3001 battery cell;

[0037] 1000 energy storage devices. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Energy storage devices are devices that store and release energy by converting it from one form to another.

[0041] As energy storage devices continue to evolve towards larger capacity, higher efficiency, and lower cost, the high-temperature heating of the battery cells is intensifying. For example, during the charging and discharging of large-capacity energy storage devices at high charge / discharge rates, the battery cells generate significant heat. To dissipate this heat promptly and prevent thermal runaway, liquid cooling structures are typically installed to exchange heat with the battery cells. However, during heat dissipation, the battery cells usually only contact the liquid cooling structure on one side, limiting the heat exchange area and reducing the heat dissipation efficiency.

[0042] Based on this, the present invention provides an embodiment of a heat dissipation structure 100, which is applied to energy storage devices and can improve the heat dissipation efficiency of the battery cell.

[0043] To facilitate the reader's understanding of the concept of this utility model embodiment, the specific structure of the heat dissipation structure 100 is described below:

[0044] Please see Figure 1 The heat dissipation structure 100 includes a lower shell 1, a first liquid cooling plate 2, several second liquid cooling plates 3 and several liquid cooling pipes 4.

[0045] Combined with reference Figure 2 and Figure 3 The lower shell 1 is provided with a liquid inlet 11, a flow channel 12, a liquid outlet 13, a branch port 14, and a confluence port 15. The liquid inlet 11, the flow channel 12, and the liquid outlet 13 are connected in sequence to form a first fluid passage 51 for the flow of coolant. The branch port 14 is connected between the liquid inlet 11 and the flow channel 12, and the confluence port 15 is connected between the flow channel 12 and the liquid outlet 13.

[0046] Combined with reference Figure 4 The first liquid cooling plate 2 is disposed above the lower shell 1. The liquid inlet 11, the diversion port 14, the first liquid cooling plate 2, the confluence port 15 and the liquid outlet 13 are connected in sequence to form a second fluid passage 52 for the flow of coolant.

[0047] Combined with reference Figure 5 A plurality of second liquid cooling plates 3 are arranged at intervals and located between the lower shell 1 and the first liquid cooling plate 2. A receiving space 31 is formed between any two adjacent second liquid cooling plates 3. The receiving space 31 is used to receive the battery cell 3001 located between the lower shell 1 and the first liquid cooling plate 2. A liquid cooling pipe 4 is located between two adjacent second liquid cooling plates 3 and is disposed on one side of the battery cell 3001. A plurality of liquid cooling pipes 4 are used to connect the plurality of second liquid cooling plates 3 and form a fluid channel. The liquid inlet 11, the branch port 14, the fluid channel, the confluence port 15 and the liquid outlet 13 are connected in sequence to form a third fluid passage 53 for the flow of coolant.

[0048] In the above manner, the first fluid passage 51, the second fluid passage 52, and the third fluid passage 53 respectively contact different surfaces of the battery cell 3001. That is, the first fluid passage 51 contacts the bottom surface of the battery cell 3001, the second fluid passage 52 contacts the top surface of the battery cell 3001, and the third fluid passage 53 contacts the side surface of the battery cell 3001, thereby achieving multi-faceted contact, expanding the heat exchange area of ​​the battery cell 3001, and improving the heat dissipation efficiency of the battery cell 3001.

[0049] Regarding the heat dissipation structure 100 described above, please refer to some embodiments. Figures 1 to 3The flow channel 12 of the lower shell 1 extends in a serpentine shape. In this way, the first fluid passage 51 can be extended in a serpentine shape, increasing the extension length of the first fluid passage 51 and increasing the contact area between the first fluid passage 51 and the battery cell 3001, that is, increasing the heat exchange area of ​​the bottom surface of the battery cell 3001, which helps to improve the heat dissipation efficiency of the battery cell 3001.

[0050] And / or, for the above-described heat dissipation structure 100, please refer to [reference needed] in some embodiments. Figure 4 The first liquid cooling plate 2 extends in a serpentine pattern. In this way, the second fluid passage 52 can extend in a serpentine pattern, increasing the extension length of the second fluid passage 52 and increasing the contact area between the second fluid passage 52 and the battery cell 3001, that is, increasing the heat exchange area on the top surface of the battery cell 3001, which helps to improve the heat dissipation efficiency of the battery cell 3001.

[0051] And / or, for the above-described heat dissipation structure 100, please refer to [reference needed] in some embodiments. Figure 5 The fluid channel formed by the several second liquid cooling plates 3 and several liquid cooling pipes 4 extends in a serpentine pattern. In this way, the third fluid passage 53 can extend in a serpentine pattern, increasing the extension length of the third fluid passage 53 and increasing the contact area between the third fluid passage 53 and the battery cell 3001, that is, increasing the heat exchange area on the side of the battery cell 3001, which helps to improve the heat dissipation efficiency of the battery cell 3001.

[0052] Regarding the heat dissipation structure 100 described above, please refer to some embodiments. Figure 6 and Figure 7 The heat dissipation structure 100 also includes a heat-conducting element 6, which is disposed between the first liquid cooling plate 2 and the second liquid cooling plate 3. The heat-conducting element 6 abuts against the first liquid cooling plate 2, and the side of the heat-conducting element 6 facing away from the first liquid cooling plate 2 is used to abut against the battery cell 3001 when the battery cell 3001 is housed in the housing space 31. In this way, when the battery cell 3001 is housed in the housing space 31, the thermal conductivity between the battery cell 3001 and the first liquid cooling plate 2 can be improved, thereby improving the thermal conductivity between the battery cell 3001 and the second fluid passage 52, which helps to improve the heat dissipation efficiency of the battery cell 3001.

[0053] Furthermore, in some embodiments, the heat-conducting element 6 is a heat-conducting foam. The heat-conducting element 6 is elastic, and when the battery cell 3001 is housed in the housing space 31, the thickness of the heat-conducting element 6 is greater than or equal to the distance between the first liquid cooling plate 2 and the battery cell 3001. Through the above method, the battery cell 3001, the heat-conducting element 6, and the first liquid cooling plate 2 elastically compress each other, which can reduce the probability of the heat-conducting element 6 loosening or shifting and improve the stability of the heat-conducting element 6.

[0054] In some embodiments of the heat dissipation structure 100, the heat dissipation structure 100 includes a first adhesive member (not shown), which is disposed between the first liquid cooling plate 2 and the heat-conducting member 6, and the first adhesive member bonds the first liquid cooling plate 2 and the heat-conducting member 6 together. Through this method, the heat-conducting member 6 and the first liquid cooling plate are bonded together, which can further reduce the probability of the heat-conducting member 6 loosening or shifting, and further improve the stability of the heat-conducting member 6.

[0055] In some embodiments of the heat dissipation structure 100, the heat dissipation structure 100 includes a second adhesive member (not shown). The second adhesive member is disposed on the side of the heat-conducting member 6 facing away from the first liquid cooling plate 2. One side of the second adhesive member is bonded to the side of the heat-conducting member 6 facing away from the first liquid cooling plate 2, and the other side of the second adhesive member is used to bond the heat-conducting member 6 to the battery cell 3001 when the battery cell 3001 is housed in the housing space 31. In this way, the battery cell 3001 and the heat-conducting member 6 are bonded together, which can reduce the probability of the battery cell 3001 loosening or displacement and improve the stability of the battery cell 3001.

[0056] In some embodiments of the heat dissipation structure 100, the heat dissipation structure 100 includes a third adhesive member (not shown). The third adhesive member is disposed on the side of the second liquid cooling plate 3 facing the receiving space 31. One side of the third adhesive member is bonded to the side of the second liquid cooling plate 3 facing the receiving space 31, and the other side of the third adhesive member is used to bond the second liquid cooling plate 3 to the battery cell 3001 when the battery cell 3001 is received in the receiving space 31. In this way, the battery cell 3001 and the second liquid cooling plate 3 are bonded to each other, which can further reduce the probability of the battery cell 3001 loosening or displacement, and further improve the stability of the battery cell 3001.

[0057] Furthermore, in some embodiments, the first adhesive is a thermally conductive structural adhesive. By using the above method, when the first adhesive is a thermally conductive structural adhesive, the thermal resistance of the first adhesive can be reduced, and the thermal conductivity between the thermally conductive component 6 and the first liquid cooling plate 2 can be improved.

[0058] And / or, further, in some embodiments, the second adhesive is a thermally conductive structural adhesive. By means of the above, when the second adhesive is a thermally conductive structural adhesive, the thermal resistance of the second adhesive can be reduced, and the thermal conductivity between the battery cell 3001 and the thermally conductive component 6 can be improved.

[0059] And / or, further, in some embodiments, the third adhesive is a thermally conductive structural adhesive. By means of the above, when the third adhesive is a thermally conductive structural adhesive, the thermal resistance of the third adhesive can be reduced, and the thermal conductivity between the battery cell 3001 and the second liquid cooling plate 3 can be improved.

[0060] Regarding the heat dissipation structure 100 described above, please refer to some embodiments. Figure 8The heat dissipation structure 100 includes a sealing member 7. One end of the sealing member 7 is connected to the lower shell 1, and the other end of the sealing member 7 is connected to the end of the second liquid cooling plate 3. The sealing member 7 is used to seal the gap between the second liquid cooling plate 3 and the battery cell 3001 when the battery cell 3001 is housed in the housing space 31. In this way, during the solidification process of the third adhesive, the sealing member 7 is used to prevent the unsolidified third adhesive from overflowing from the gap between the second liquid cooling plate 3 and the battery cell 3001.

[0061] Furthermore, in some embodiments, please refer to Figure 8 The second liquid cooling plate 3 includes a flow channel plate 32, two flow channel pipes 33 and two liquid cooling connectors 34. The two ends of the flow channel plate 32 are respectively connected to the two flow channel pipes 33. One flow channel pipe 33 is connected to one liquid cooling connector 34. One liquid cooling connector 34 is used to connect to one liquid cooling pipe 4.

[0062] Furthermore, in some embodiments, please refer to Figure 9 The sealing component 7 includes a support portion 71, a first sealing portion 72, and a second sealing portion 73. The support portion 71 is connected to the lower shell 1. One end of the first sealing portion 72 and one end of the second sealing portion 73 are both connected to the end of the support portion 71 away from the lower shell 1. The other ends of the first sealing portion 72 and the second sealing portion 73 extend in a direction away from the support portion 71. Furthermore, slots 74 are formed at intervals between the other ends of the first sealing portion 72 and the other ends of the second sealing portion 73. The end of the second liquid cooling plate 3 is inserted into the slot 74.

[0063] This utility model embodiment provides a heat dissipation structure 100, including a lower shell 1, a first liquid cooling plate 2, a plurality of second liquid cooling plates 3, and a plurality of liquid cooling pipes 4; the lower shell 1 is provided with a liquid inlet 11, a flow channel 12, a liquid outlet 13, a branch port 14, and a confluence port 15. The liquid inlet 11, the flow channel 12, and the liquid outlet 13 are sequentially connected to form a first fluid passage 51 for the flow of coolant. The branch port 14 is connected between the liquid inlet 11 and the flow channel 12, and the confluence port 15 is connected between the flow channel 12 and the liquid outlet 13; the first liquid cooling plate 2 is disposed above the lower shell 1, and the liquid inlet 11, the branch port 14, the first liquid cooling plate 2, the confluence port 15, and the liquid outlet 13 are sequentially connected to form a first fluid passage 51 for the flow of coolant. A second fluid passage 52 for coolant flow is formed; a plurality of second liquid cooling plates 3 are arranged at intervals and located between the lower shell 1 and the first liquid cooling plate 2, and a receiving space 31 is formed between any two adjacent second liquid cooling plates 3. The receiving space 31 is used to receive the battery cell 3001 located between the lower shell 1 and the first liquid cooling plate 2; a liquid cooling pipe 4 is located between two adjacent second liquid cooling plates 3 and is disposed on one side of the battery cell 3001. A plurality of liquid cooling pipes 4 are used to connect a plurality of second liquid cooling plates 3 and form a fluid pipe. The inlet 11, the branch port 14, the fluid pipe, the confluence port 15 and the outlet 13 are connected in sequence to form a third fluid passage 53 for coolant flow. In the above manner, the first fluid passage 51, the second fluid passage 52, and the third fluid passage 53 respectively contact different surfaces of the battery cell 3001. That is, the first fluid passage 51 contacts the bottom surface of the battery cell 3001, the second fluid passage 52 contacts the top surface of the battery cell 3001, and the third fluid passage 53 contacts the side surface of the battery cell 3001, thereby achieving multi-faceted contact, expanding the heat exchange area of ​​the battery cell 3001, and improving heat dissipation efficiency.

[0064] Please see Figure 10 This utility model also provides an embodiment of an energy storage device 1000, which includes the aforementioned heat dissipation structure 100, an upper shell 200, and an energy storage component 300. The energy storage component 300 includes a plurality of battery cells 3001. The upper shell 200 is detachably connected to the lower shell 1. A first liquid cooling plate 2, a plurality of second liquid cooling plates 3, and a plurality of liquid cooling pipes 4 are all disposed inside the upper shell 200. An inlet 11 and an outlet 13 are disposed outside the upper shell 200 and are used to connect to an external coolant circulation device. A battery cell 3001 is disposed in a receiving space 31. The specific structure and function of the aforementioned heat dissipation structure 100 can be referred to the above embodiments, and will not be repeated here.

[0065] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A heat dissipation structure, characterized in that, include: The lower shell is provided with a liquid inlet, a flow channel, a liquid outlet, a branch port, and a confluence port. The liquid inlet, the flow channel, and the liquid outlet are connected in sequence to form a first fluid passage for the flow of coolant. The branch port is connected between the liquid inlet and the flow channel, and the confluence port is connected between the flow channel and the liquid outlet. The first liquid cooling plate is disposed above the lower shell. The liquid inlet, the diversion port, the first liquid cooling plate, the confluence port and the liquid outlet are sequentially connected to form a second fluid passage for the flow of coolant. A plurality of second liquid cooling plates are arranged at relative intervals and located between the lower shell and the first liquid cooling plate. A receiving space is formed between any two adjacent second liquid cooling plates. The receiving space is used to receive the battery cell located between the lower shell and the first liquid cooling plate. A plurality of liquid cooling pipes are provided, one of which is located between two adjacent second liquid cooling plates and disposed on one side of the battery cell. The plurality of liquid cooling pipes are used to connect the plurality of second liquid cooling plates and form a fluid conduit. The liquid inlet, the branch outlet, the fluid conduit, the confluence outlet and the liquid outlet are sequentially connected to form a third fluid passage for the flow of coolant.

2. The heat dissipation structure according to claim 1, characterized in that, The flow channels of the lower shell extend in a serpentine, meandering pattern; and / or, The first liquid cooling plate extends in a serpentine, meandering pattern; and / or, The fluid channel formed by the plurality of second liquid cooling plates and the plurality of liquid cooling pipes extends in a serpentine pattern.

3. The heat dissipation structure according to claim 1, characterized in that, The heat dissipation structure further includes a heat-conducting component, which is disposed between the first liquid cooling plate and the second liquid cooling plate. The heat-conducting component abuts against the first liquid cooling plate, and the side of the heat-conducting component away from the first liquid cooling plate is used to abut against the battery cell when the battery cell is housed in the housing space.

4. The heat dissipation structure according to claim 3, characterized in that, The heat dissipation structure includes a first adhesive component, which is disposed between the first liquid cooling plate and the heat-conducting component, and the first adhesive component bonds the first liquid cooling plate and the heat-conducting component together.

5. The heat dissipation structure according to claim 3, characterized in that, The heat dissipation structure includes a second adhesive component, which is disposed on the side of the heat-conducting component away from the first liquid cooling plate. One side of the second adhesive component is bonded to the side of the heat-conducting component away from the first liquid cooling plate, and the other side of the second adhesive component is used to bond the heat-conducting component to the battery cell when the battery cell is housed in the housing space.

6. The heat dissipation structure according to claim 1, characterized in that, The heat dissipation structure includes a third adhesive component, which is disposed on the side of the second liquid cooling plate facing the receiving space. One side of the third adhesive component is bonded to the side of the second liquid cooling plate facing the receiving space, and the other side of the third adhesive component is used to bond the second liquid cooling plate to the battery cell when the battery cell is received in the receiving space.

7. The heat dissipation structure according to claim 1, characterized in that, The heat dissipation structure includes a sealing member, one end of which is connected to the lower shell and the other end of which is connected to the end of the second liquid cooling plate. The sealing member is used to seal the gap between the second liquid cooling plate and the battery cell when the battery cell is housed in the housing space.

8. The heat dissipation structure according to claim 7, characterized in that, The sealing component includes a support portion, a first sealing portion, and a second sealing portion. The support portion is connected to the lower shell. One end of the first sealing portion and one end of the second sealing portion are both connected to the end of the support portion away from the lower shell. The other ends of the first sealing portion and the second sealing portion extend in a direction away from the support portion. Furthermore, slots are formed at intervals between the other ends of the first sealing portion and the other ends of the second sealing portion. The end of the second liquid cooling plate is inserted into the slot.

9. The heat dissipation structure according to claim 1, characterized in that, The second liquid cooling plate includes a flow channel plate, two flow channel tubes and two liquid cooling connectors. The two ends of the flow channel plate are respectively connected to the two flow channel tubes. One of the flow channel tubes is connected to one of the liquid cooling connectors. The liquid cooling connector is used to connect to one of the liquid cooling tubes.

10. An energy storage device, characterized in that, The device includes a heat dissipation structure, an upper shell, and an energy storage component as described in any one of claims 1-9. The energy storage component includes a plurality of battery cells. The upper shell and the lower shell are detachably connected. The first liquid cooling plate, a plurality of second liquid cooling plates, and a plurality of liquid cooling pipes are all disposed inside the upper shell. The liquid inlet and the liquid outlet are disposed outside the upper shell. One of the battery cells is disposed in one of the receiving spaces.

Images