CCS integrated exhaust carrier, CCS integrated exhaust, battery pack and electrical equipment

Abstract

The application relates to the technical field of battery connecting components, and discloses a CCS integrated row carrier, a CCS integrated row, a battery pack and a power utilization equipment. The CCS integrated row carrier comprises a plate body and a cooling pipe. The plate body is provided with a first accommodating groove and a second accommodating groove. The cooling pipe is arranged in the first accommodating groove, and the cooling pipe is provided with a connecting portion which is used for being in heat conduction connection with a battery monomer and / or a groove bottom of the first accommodating groove. The second accommodating groove is used for accommodating a busbar. The application can improve the heat dissipation performance of a battery pole portion and improve the fast charging performance of the battery pack.

Description

Technical Field

[0001] This application relates to the field of battery connection component technology, specifically to CCS integrated busbar carrier, CCS integrated busbar, battery pack and electrical equipment. Background Technology

[0002] When a battery pack is charged and discharged at high rates, the battery generates a lot of heat. If the heat dissipation is poor, the temperature rise will accelerate the aging of materials, reduce capacity and cycle life, and may even cause thermal runaway, leading to fire and explosion. Therefore, good heat dissipation can maintain the stable operating temperature of the battery, ensure performance, and extend life. It is the core guarantee for the safe and efficient operation of the battery.

[0003] In related technologies, most battery pack solutions use bottom liquid cooling, while a few use side cooling. As the overcharge rate of batteries continues to rise, after reaching 6C (a fast charging rate), bottom cooling and side cooling cannot meet the heat dissipation requirements of fast charging for the terminal parts, thus affecting fast charging performance. Utility Model Content

[0004] This application provides a CCS integrated busbar carrier, a CCS integrated busbar, a battery pack, and electrical equipment to improve the heat dissipation performance of the battery terminals and enhance the fast charging performance of the battery pack.

[0005] On the one hand, this application provides a CCS integrated array carrier, comprising: The plate has a first receiving groove and a second receiving groove; A cooling pipe is disposed in the first receiving groove, the cooling pipe having a connecting part, the connecting part and / or the bottom of the first receiving groove being used for thermally conductive connection with the battery cell; The second receiving slot is used to receive the busbar.

[0006] Beneficial effects: The plate can be set above the battery cell, that is, on the side of the battery cell where the terminal post is located. By integrating the cooling pipes inside the plate, there is no need to add an independent liquid cooling plate above the battery cell, which can reduce the overall weight of the battery pack. At the same time, the cooling pipes can be close to the heat-generating area of ​​the terminal post on the battery cell, which can shorten the heat transfer path, improve the heat dissipation efficiency of the terminal post, and thus improve the fast charging performance of the battery pack.

[0007] In one optional embodiment, the bottom of the first receiving groove is provided with a first opening, and the connecting part is used to make a thermally conductive connection with the battery cell through the first opening.

[0008] In one alternative embodiment, the bottom of the second receiving groove is higher than the bottom of the first receiving groove along the depth direction of the second receiving groove.

[0009] In one alternative embodiment, the bottom of the second receiving groove is provided with a second opening, which is used to receive a portion of the terminal post of the battery cell.

[0010] In one optional embodiment, the cooling pipe includes multiple pipe segments and multiple connecting pipe segments, the multiple pipe segments are arranged side by side at intervals along a first direction, and the multiple pipe segments are connected in series through the connecting pipe segments.

[0011] In one optional embodiment, at least one baffle is provided inside the cooling pipe, the baffle being arranged along the extending direction of the cooling pipe, and the baffle dividing the cavity of the cooling pipe into multiple independent channels. And / or, the cooling pipe is provided with a plurality of ribs, and the plurality of ribs are arranged along the extension direction of the cooling pipe.

[0012] In one optional embodiment, the cross-section of the cooling pipe perpendicular to its length direction has an adjacent first side and a second side, the length of the first side being greater than the length of the second side, and the connecting portion being located on the first side.

[0013] Secondly, this application also provides a CCS integrated row, including: CCS integrated carrier; Information acquisition board, connected to the board body; The busbar is located within the second receiving tank; The information acquisition board is electrically connected to the busbar.

[0014] Beneficial effects: The integrated CCS integrated array can simultaneously realize functions such as current conduction, cell signal acquisition, and top liquid cooling, eliminating the need for a separate liquid cooling plate above the cell and reducing the weight and height of the top of the battery pack.

[0015] In one optional embodiment, the first receiving slot is provided with a first slot opening, the information acquisition board is disposed on and covers the first slot opening, and the information acquisition board is electrically connected to the busbar through a conductive connector.

[0016] In one alternative embodiment, there is a gap between the information acquisition board and the cooling pipe.

[0017] Thirdly, this application also provides a battery pack, comprising: Multiple battery cells, each battery cell having two terminals and a mounting surface located between the two terminals; CCS integrated array carrier, or CCS integrated array; The connecting part is connected to the battery cell on the mounting surface.

[0018] Beneficial effects: In this embodiment, the battery pack can achieve close-range liquid cooling at the top of the individual battery cells, which significantly reduces the temperature rise of the terminals during overcharging and solves the problem of insufficient heat dissipation from traditional bottom and side cooling. At the same time, the elimination of the independent top liquid cooling plate reduces the weight of the battery pack.

[0019] In one optional embodiment, the bottom of the first receiving groove is provided with a first opening, and a thermally conductive adhesive block is provided in the first opening. The connecting part is thermally connected to the mounting surface through the thermally conductive adhesive block.

[0020] In one optional embodiment, the first receiving groove is away from the surface of the cooling pipe, or a first adhesive baffle and a second adhesive baffle are connected between the cooling pipe and the mounting surface. The thermally conductive adhesive block is located between the first adhesive blocking part and the second adhesive blocking part.

[0021] In one optional embodiment, the bottom of the second receiving groove is provided with a second opening for accommodating part of the electrode post of the battery cell. Along the depth direction of the second receiving groove, the bottom of the second receiving groove is higher than the bottom of the first receiving groove, but not higher than the top surface of the electrode post.

[0022] Fourthly, this application also provides an electrical device, including a battery pack.

[0023] Beneficial effects: When electrical devices are equipped with the above-mentioned battery pack, and the battery pack serves as the power source for the devices, the devices can support 6C ultra-high rate overcharging, and the charging heat generation is controllable, resulting in a significant increase in charging speed. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a CCS integrated busbar and battery assembly structure according to an embodiment of this application; Figure 2 This is one of the enlarged views of the connection portion in the embodiments of this application; Figure 3 This is a second enlarged view of a portion of the connecting part in an embodiment of this application; Figure 4 This is the third enlarged view of a portion of the connection area in an embodiment of this application; Figure 5This is a schematic diagram of the cross-sectional structure of a cooling pipe in a CCS integrated drain according to an embodiment of this application; Figure 6 This is a schematic diagram of the cross-sectional structure of another cooling pipe in a CCS integrated busbar according to an embodiment of this application; Figure 7 This is a schematic diagram of the cross-sectional structure of another cooling pipe in a CCS integrated busbar according to an embodiment of this application; Figure 8 This is a schematic diagram illustrating the arrangement of the cooling pipe in the CCS integrated drain and the battery cell in the battery pack according to an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: X, first direction; Y, depth direction; 1. Panel; 2. Cooling pipe; 3. Busbar; 4. Cell battery; 5. Thermally conductive adhesive block; 6. Information acquisition board; 7. Conductive connector; 11. First receiving groove; 12. First opening; 13. First adhesive-blocking part; 14. Second adhesive-blocking part; 15. Second receiving groove; 16. Second opening; 17. First groove opening; 21. Connecting part; 22. Pipe section; 23. Connecting pipe section; 24. Partition; 25. Reinforcing bar; 26. First side; 27. Second side; 41. First pole; 42. Mounting surface; 43. Explosion-proof valve; 44. Second pole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In related technologies, when a battery pack is charged and discharged at high rates, the battery will generate a lot of heat. If the heat dissipation is poor, the temperature rise will accelerate the aging of materials, reduce capacity and cycle life, and may also cause thermal runaway, leading to fire and explosion. Therefore, good heat dissipation can maintain the stable operating temperature of the battery, ensure performance, and extend life. It is the core guarantee for the safe and efficient operation of the battery.

[0030] Most battery pack solutions use bottom liquid cooling, while a few use side cooling. As the overcharge rate of batteries continues to rise, once a certain specification is reached, such as 6C or above, bottom cooling and side cooling cannot meet the heat dissipation requirements of fast charging for the terminal parts, thus affecting fast charging performance.

[0031] To achieve heat dissipation at the battery terminals, a recessed platform or positioning groove corresponding to the terminal position is typically created on the cold plate. The lower surface of the cold plate directly adheres to the upper surface of the battery terminal, and heat is directly transferred through the surface contact between the terminal end face and the cold plate.

[0032] Some related solutions integrate sleeve-type and edge-enclosed heat exchange structures on the cold plate. By covering the side wall area of ​​the pole column with the local structure of the cold plate, the heat exchange contact area between the pole column and the cold plate is increased, and circumferential heat dissipation of the pole column is achieved.

[0033] The above-mentioned direct cooling solutions for the electrode posts are simple in structure and have poor adaptability. Most of them simply attach to the end face of the electrode post or one side wall, resulting in a limited effective heat exchange coverage area. Under high-rate 6C and above fast charging conditions, the problem of local heat accumulation in the electrode post cannot be effectively solved, and the heat dissipation efficiency is defective.

[0034] Therefore, this application provides a CCS (Cell Contact System) integrated busbar carrier, a CCS integrated busbar, a battery pack, and electrical equipment to improve the heat dissipation performance of the battery terminals and enhance the fast charging performance of the battery pack.

[0035] The following is combined with Figures 1 to 8 This describes an embodiment of the present application.

[0036] According to an embodiment of this application, in one aspect, a CCS integrated air carrier is provided, including a plate 1 and a cooling pipe 2, the specific scheme of which is as follows.

[0037] The entire plate 1 can be integrally injection molded from insulating plastic, and the first receiving groove 11 and the second receiving groove 15 can be simultaneously formed during the molding process. The plate 1 can also be made of other materials, which can be selected and set according to specific usage requirements, and are not limited here.

[0038] Among them, such as Figure 3 As shown, the first receiving groove 11 is the mounting structure for the cooling pipe 2. The cooling pipe 2 can be placed in the first receiving groove 11, and the bottom of the first receiving groove 11 is thermally connected to the battery cell 4. The bottom of the first receiving groove 11 is the side wall of the plate 1 away from the cooling pipe 2. The heat emitted by the battery cell 4 can be exchanged with the cooling pipe 2 through the side wall of the plate 1, thereby indirectly cooling the battery cell 4 by the cooling pipe 2.

[0039] like Figure 2 As shown, a connecting part 21 can also be provided on the cooling pipe 2. The connecting part 21 of the cooling pipe 2 is directly thermally connected to the battery cell 4 through the bottom of the first receiving groove 11, that is, through the first opening 12, so as to cool the battery cell 4.

[0040] like Figure 4 As shown, the bottom of the connecting part 21 and the first receiving groove 11 can be thermally connected to the battery cell 4 at the same time. That is, the bottom of the first receiving groove 11 is thermally connected to the battery cell 4, and the cooling pipe 2 is thermally connected to the battery cell 4 through the first opening 12 via the connecting part 21.

[0041] Specifically, the continuous heating of the terminal post can cause the area near the terminal post on the battery cell 4 to heat up, forming a terminal post heating area. The bottom of the connecting part 21 and the first receiving groove 11 can be thermally connected to the terminal post heating area on the battery cell 4 at the same time, or one of the connecting part 21 and the bottom of the first receiving groove 11 can be thermally connected to the terminal post heating area on the battery cell 4, thereby achieving cooling of the terminal post heating area and cooling of the terminal post.

[0042] The second receiving groove 15 is the installation structure of the busbar 3. That is, the second receiving groove 15 is used to accommodate the busbar 3 of the CCS integrated busbar, and the busbar 3 can be installed in the groove and is limited by the second receiving groove.

[0043] Optionally, the cooling pipe 2 can be made of materials or alloys with high thermal conductivity such as aluminum or copper, and the cooling pipe 2 can be assembled into the first receiving groove 11 by at least one of the following methods: pre-embedded injection molding, groove snap-fit ​​fixing, adhesive fixing, and bolt locking.

[0044] Optionally, the overall outline of the first receiving groove 11 can be matched with the shape of the cooling pipe 2, thereby further restricting the displacement of the cooling pipe 2.

[0045] Furthermore, compared to existing solutions that directly mount the cooling pipes onto the surface of the busbar, this application integrates the cooling pipes 2 into the insulating plate 1 and arranges them in a staggered, layered manner with the busbar 3. This eliminates the space loss caused by the large-area insulating partitions and multi-layer assembly gaps between the metal cooling pipes 2 and the metal busbar, reducing the vertical height of the module top and thus improving the internal space utilization of the module. On the other hand, it reduces the weight of components such as independent cold plates, insulating supports, and multi-layer gaskets, allowing more high-capacity cells to be installed within the same external contour size of the battery pack, thereby increasing the system energy density. Simultaneously, by placing both the cooling pipes 2 and the busbar 3 on the plate, the heat dissipation channels and the conductive busbar structure area do not interfere with each other. There is no need to reduce the cooling heat exchange area for insulation and welding, enabling stable compatibility with high-energy-density, high-capacity cells for 6C ultra-high-rate fast charging, achieving a triple effect of heat dissipation performance, space utilization, and battery pack energy density.

[0046] In this embodiment, the plate 1 can be disposed above the battery cell 4, that is, on the side of the battery cell 4 where the terminal post is disposed. In this way, by integrating the cooling pipe 2 inside the plate, there is no need to add an independent liquid cooling plate above the battery cell 4, which can reduce the overall weight of the battery pack. At the same time, the cooling pipe 2 can be close to the heat-generating area of ​​the terminal post on the battery cell 4, which can shorten the heat transfer path, improve the heat dissipation efficiency of the terminal post, and thus improve the fast charging performance of the battery pack.

[0047] In one embodiment, a first opening 12 can be formed at the bottom of the first receiving groove 11, and the first opening 12 is directly opposite the heat-generating area of ​​the battery cell 4 near the terminal post on the top cover. The cooling pipe 2 can be disposed entirely inside the first receiving groove 11, and the outer wall area of ​​the cooling pipe 2 facing the first opening 12 is the connecting part 21. The connecting part 21 can be thermally connected to the battery cell 4 through the first opening 12 to achieve a cooling effect. The first opening 12 can also avoid the connecting part 21, allowing the connecting part 21 to be directly thermally connected to the battery cell 4, thereby improving the heat conduction efficiency.

[0048] Specifically, after the connecting part 21 passes through the first opening 12, it can be thermally connected to the heat-generating area of ​​the electrode near the electrode on the top cover of the battery cell 4, thereby achieving a cooling effect on the electrode.

[0049] In one embodiment, along the depth direction Y of the second receiving groove 15, the bottom of the second receiving groove 15 is higher than the bottom of the first receiving groove 11.

[0050] The depth direction Y is parallel to the height direction of the battery cell 4, and the first receiving groove 11 also extends along the height direction.

[0051] Understandably, the terminal post of the battery cell 4 is higher than the top cover of the battery cell 4 along the height direction. By raising the bottom of the second receiving groove 15, that is, raising the mounting position of the busbar 3, it can be matched with the protruding structure of the terminal post relative to the top cover of the battery cell 4 to achieve a staggered arrangement, which can ensure that top heat dissipation and conductive connection are achieved at the same time.

[0052] In one embodiment, the bottom of the second receiving groove 15 is provided with a second opening 16, which is used to receive a portion of the terminal post of the battery cell 4.

[0053] It should be noted that the second opening 16 is located at the bottom of the second receiving groove 15 at a higher position. During assembly, the pole can pass upward through the second opening 16 and extend into the interior of the second receiving groove 15 to directly contact and weld with the busbar 3 inside the second receiving groove 15 to achieve conductivity.

[0054] In one embodiment, the cooling pipe 2 includes a plurality of pipe segments 22 and a plurality of connecting pipe segments 23. The plurality of pipe segments 22 are arranged side by side at intervals along a first direction X, and the plurality of pipe segments 22 are connected in series through the connecting pipe segments 23.

[0055] It should be noted that the first direction X is the length direction of the battery cell 4, and the extension direction of the plate 1 is the width direction of the battery cell 4. The first direction X, the depth direction Y, and the width direction of the battery cell 4 are perpendicular to each other.

[0056] The pipe section 22 of the cooling pipe 2 extends along the width direction of the battery cell 4, so that each pipe section 22 can span multiple sequentially arranged battery cells 4, thereby simultaneously cooling multiple battery cells 4.

[0057] Multiple pipe sections 22 are arranged side by side at equal intervals along the first direction X, and two adjacent pipe sections 22 are connected in series through an arc-shaped connecting pipe section 23, so that the cooling pipe 2 as a whole forms a continuous serpentine series flow channel.

[0058] Optionally, the connecting tube 23 is a curved tube, such as U-shaped, V-shaped, or L-shaped.

[0059] Based on this, multiple pipe sections 22 and multiple connecting pipe sections 23 can be constructed as a single integral structure by bending. Alternatively, they can be independent structures, connected end to end by welding or connecting clips to form an integrally connected pipe structure. Alternatively, only one set of inlet and outlet ports can be provided at both ends of the cooling pipe 2, allowing the coolant to flow sequentially through all pipe sections 22 and connecting pipe sections 23, thereby cooling the top cover of each battery cell 4.

[0060] The integrated cooling pipe 2 enhances the overall structural strength of the CCS, replaces the top pressure bar of the battery cell, reduces the number of parts, and lowers the cost of the package.

[0061] Optionally, the plate body 1 extends in a direction parallel to the pipe section 22, and the first receiving groove 11 can be configured as a serpentine outline to completely enclose the entire pipe section 22 and the connecting pipe section 23.

[0062] Optionally, the first receiving groove 11 may also be configured as a straight groove structure parallel to the extension direction of the plate 1, used only to cover the pipe section 22, and the connecting pipe section 23 may be located on the outside of the plate 1.

[0063] Based on this, the connection positions of the two ends of the connecting pipe section 23 and the two adjacent pipe sections 22 can be set on the outside of the plate body 1, or the two ends of the connecting pipe section 23 can be set as straight pipe structures, so that the connection position is located in the first receiving groove 11.

[0064] In this embodiment, a single continuous cooling pipe 2 only requires one set of inlet and outlet ports and a single collector. Compared with the multi-segment independent cooling pipe solution, it can reduce the number of pipe joints and seals, thereby reducing the risk of water leakage.

[0065] In one embodiment, the plate 1 and the cooling pipe 2 are formed into an integral structure through a pre-embedded injection molding process.

[0066] It should be noted that the cooling pipes 2, which can be bent or sequentially connected, can be pre-embedded and positioned inside the injection mold cavity. Then, molten insulating plastic is injected into the mold, and the plastic wraps around the outer periphery of the cooling pipes 2. After cooling and solidification, the plate 1 and the cooling pipes 2 are tightly bonded together as a single structure.

[0067] After molding, the outer wall of the cooling pipe 2 is completely wrapped by the plastic of the plate 1, with only the connecting part 21 exposed through the first opening 12 for thermal connection with the battery cell 4.

[0068] Alternatively, the cooling pipe 2 can be fixed to the first receiving groove 11 by means of adhesive, clips, or bolts.

[0069] In this embodiment, the plate 1 and the cooling pipe 2 are formed into an integral structure through a pre-embedded injection molding process. This allows the plastic to directly cover the cooling pipe 2 without assembly gaps, and the cooling pipe 2 can directly serve as the internal load-bearing skeleton of the plate 1, thereby improving the overall structural rigidity. In addition, the integral molding of the cooling pipe 2 and the plate 1 eliminates the need for pre-installation and fixing of pipes in the assembly process, improving the assembly efficiency of the production line.

[0070] In one embodiment, at least one baffle 24 may be provided in the cooling pipe 2. The baffle 24 is provided along the extension direction of the cooling pipe 2 and divides the cavity of the cooling pipe 2 into multiple independent channels.

[0071] Specifically, during the extrusion molding of the cooling pipe 2, a baffle 24 is integrally extruded inside the cooling pipe 2 along the pipe extension direction. The baffle 24 divides the inner cavity of the cooling pipe 2 into two or more independent parallel coolant channels, enabling the coolant to flow synchronously through multiple channels and increasing the heat exchange area. The baffle 24 divides a single large flow channel into multiple parallel channels, which can also increase the flow rate of the coolant and improve the heat exchange efficiency.

[0072] Optionally, multiple ribs 25 may be provided inside the cooling pipe 2, with all ribs 25 arranged along the extension direction of the cooling pipe 2. Specifically, multiple ribs 25 are arranged along the width direction inside the cooling pipe 2, which can disrupt the laminar flow of the coolant and thus enhance heat transfer.

[0073] Optionally, baffles 24 and ribs 25 can be installed in the cooling pipe 2 at the same time, so as to achieve both the effects of diversion and turbulence.

[0074] In addition, the installation of baffles 24 and ribs 25 can improve the structural strength of cooling pipe 2 and reduce the risk of deformation.

[0075] Optionally, the cooling pipe 2 may not have baffles 24 and ribs 25 installed inside, so that the entire inner cavity of the cooling pipe 2 is a flow channel, which can reduce the resistance of the coolant in the flow channel, increase the flow rate, and thus enhance the cooling effect.

[0076] In one embodiment, the cross-section of the cooling pipe 2 perpendicular to its own length direction has an adjacent first side 26 and a second side 27, the length of the first side 26 is greater than the length of the second side 27, and the connecting part 21 is located on the first side 26.

[0077] Specifically, the first side 26 is a straight edge structure, meaning that the side of the cooling pipe 2 where the first side 26 is located is a planar structure, and the plane where the first side 26 of the cooling pipe 2 is located is the connecting part 21. The electrode heating area on the top cover of the battery cell 4 near the electrode can also be set as a planar structure. By setting the connecting part 21 as a planar structure, it can fit in close contact with the electrode heating area, thereby improving cooling efficiency.

[0078] The length of the first side 26 is greater than the length of the second side 27, which allows the cooling pipe 2 to form a flat pipe structure. That is, the side of the cooling pipe 2 where the first side 26 is located is the edge of the wide side of the cooling pipe 2, and the second side 27 is the edge of the narrow side of the cooling pipe 2. Arranging the heat-conducting contact surface between the cooling pipe 2 and the battery cell 4 on the wide side where the long side of the cooling pipe 2 is located can increase the contact area and improve the heat conduction efficiency.

[0079] The second side 27 can be set as an arc-shaped edge structure, that is, the side of the cooling pipe 2 where the second side 27 is located is an arc-shaped surface structure, which avoids sharp edges on the cooling pipe, avoids damage such as bumps during handling or forming, and also avoids stress concentration at the edges when bending the cooling pipe 2, which could cause the cooling pipe 2 to break.

[0080] Alternatively, the second side 27 can also be configured as a planar structure.

[0081] When bending the cooling pipe 2, it can be bent only along the narrow side, so that the entire wide side is always on the same plane.

[0082] According to an embodiment of this application, in a second aspect, a CCS integrated busbar is provided, including a CCS integrated busbar carrier, an information acquisition board 6, and a busbar 3.

[0083] Both the information acquisition board 6 and the busbar 3 are connected to the plate 1 of the CCS integrated busbar carrier, with the busbar 3 located in the second receiving slot 15.

[0084] It should be noted that the information acquisition board 6 is specifically an FPC (Flexible Printed Circuit), used to acquire the voltage and temperature signals of the battery cell 4, and can be mounted and fixed on the top of the board body 1. The cooling pipe 2 is pre-installed inside the board body 1, and a connecting part 21 is formed at the bottom of the cooling pipe 2. The connecting part 21 is exposed below the board body 1 and is used for thermal connection with the battery cell 4.

[0085] During assembly, the plate 1 supports the cooling pipe 2 and the information acquisition board 6, and is snapped onto the top cover of the entire row of battery cells 4. The connecting part 21 of the cooling pipe 2 is directly aligned with the heat-generating area of ​​the terminal near the terminal on the top cover of the battery cell 4 for cooling. Alternatively, the cooling pipe 2 can be indirectly cooled by the heat-generating area of ​​the terminal through the bottom of the first receiving groove 11 being thermally connected to the battery cell 4. It is also possible to simultaneously make both the connecting part 21 and the bottom of the first receiving groove 11 thermally connected to the heat-generating area of ​​the terminal.

[0086] Specifically, by integrating the cooling pipe 2 inside the CCS carrier, the top cover area above the battery cell 4 can be cooled. That is, the cooling pipe 2 can dissipate heat close to the heat-generating area of ​​the electrode on the battery cell 4, which can shorten the heat transfer path, improve the heat dissipation efficiency of the electrode, and thus improve the fast charging performance of the battery pack.

[0087] Busbar 3 is a conductive aluminum busbar responsible for high current output.

[0088] In this embodiment, the integrated CCS busbar can simultaneously perform functions such as current conduction, cell signal acquisition, and top liquid cooling, eliminating the need for a separate liquid cooling plate above the cell and reducing the weight and height of the top of the battery pack. Furthermore, the cooling pipe 2 is assembled synchronously with the CCS, eliminating the need for a separate liquid cooling plate and simplifying the battery pack assembly process.

[0089] In one embodiment, the first receiving groove 11 is provided with a first slot 17, the information acquisition board 6 is disposed on and covers the first slot 17, and the information acquisition board 6 is electrically connected to the busbar 3 through the conductive connector 7.

[0090] Specifically, the top of the first receiving groove 11 is open to form a first slot, and the information acquisition board 6 is completely covered above the first slot. It can be fixedly connected to the board body 1 by at least one of the following methods: buckle, hot melt column, and double-sided adhesive.

[0091] Furthermore, busbar 3 is disposed within the second receiving groove 15, and busbar 3 is exposed above the plate body 1 through the opening of the second receiving groove 15. Simultaneously, the information acquisition board 6 is arranged on the upper part of the plate body 1, and conductive connector 7 can be electrically connected to busbar 3 and information acquisition board 6 respectively. Conductive connector 7 enables the transmission of voltage signals from busbar 3 to information acquisition board 6, allowing for real-time acquisition of cell voltage.

[0092] Optionally, a nickel sheet or aluminum welding strip is used as the conductive connector 7. One end of the conductive connector 7 is welded to the busbar 3, and the other end of the conductive connector 7 is crimped or welded to the acquisition line for conduction.

[0093] Optionally, the cooling pipe 2 can be completely embedded in the first receiving groove 11, or it can be partially embedded in the first receiving groove 11. The first groove 17 is provided to facilitate the installation of the cooling pipe 2 into the first receiving groove 11.

[0094] In one embodiment, the information acquisition board 6 covers the first slot, and there is a gap between the information acquisition board 6 and the upper surface of the cooling pipe 2, so that the information acquisition board 6 and the cooling pipe 2 do not have direct contact.

[0095] It should be noted that the cooling pipe 2 is filled with low-temperature coolant, while the information acquisition board 6 is a flexible circuit board. The gap between the information acquisition board 6 and the cooling pipe 2 can prevent low-temperature condensation from corroding the circuit and avoid sampling failure.

[0096] According to an embodiment of this application, in a third aspect, a battery pack is provided, including a plurality of battery cells 4 and a CCS integrated bus.

[0097] Specifically, multiple square battery cells 4 are stacked side by side to form a cell module. Each battery cell 4 has two terminals, a positive terminal 41 and a second terminal 44, on its top cover. The side of the top cover of the battery cell 4 located between the first terminal 41 and the second terminal 44 is a mounting surface 42. The connecting part 21 is connected to the mounting surface 42 of the battery cell 4.

[0098] The top cover of the battery cell 4 is equipped with an explosion-proof valve 43. Both terminals and the explosion-proof valve 43 can be installed on the mounting surface 42.

[0099] Based on this, the portion of the mounting surface 42 located between the first pole post 41 and the explosion-proof valve 43, and the portion located between the second pole post 44 and the explosion-proof valve 43, are thermally connected to the connecting portion 21.

[0100] Optionally, the explosion-proof valve 43 is also provided on the side of the battery cell 4 where there are no poles. In this case, the mounting surface near the two poles is thermally connected to the two connecting parts 21 respectively.

[0101] During assembly, the CCS integrated busbar can be snapped onto the top cover of all battery cells 4, so that the connection part 21 of the cooling pipe 2 can be aligned with the mounting surface 42 on the top cover of the battery cell 4, and the connection part 21 and the mounting surface 42 are thermally connected.

[0102] It should be noted that the top cover of the battery cell 4 is the main heat-generating surface. During supercharging, the heat from the terminals and busbar 3 is concentrated on the top cover, forming a terminal heat-generating area on the mounting surface 42. The top of all battery cells 4 is covered by the CCS integrated busbar, and a single cooling pipe 2 can simultaneously cool all cells. In addition, the cooling pipe 2 is integrated inside the plate 1, so that the battery pack does not require an additional top liquid cooling plate or a thickened bottom cooling plate.

[0103] In this embodiment, the battery pack enables close-range liquid cooling of the top of the individual battery cells 4, significantly reducing the temperature rise of the terminals during overcharging and solving the problem of insufficient heat dissipation from traditional bottom and side cooling methods. Simultaneously, the elimination of the independent top liquid cooling plate reduces the weight of the battery pack.

[0104] In one embodiment, such as Figure 2 or Figure 4 As shown, the bottom of the first receiving groove 11 is provided with a first opening 12, and a thermally conductive adhesive block 5 is provided in the first opening 12. The connecting part 21 is thermally connected to the mounting surface 42 through the thermally conductive adhesive block 5.

[0105] Specifically, a thermally conductive adhesive block 5 is provided in the first opening 12, so that when the CCS integrated array is pressed down and assembled, the thermally conductive adhesive block 5 is squeezed and filled between the connecting part 21 and the mounting surface 42. The thermally conductive adhesive block 5 is attached to the connecting part 21 and the mounting surface 42 on both sides respectively, forming a continuous thermally conductive channel.

[0106] Optionally, the thermally conductive adhesive block 5 may be made of a high thermal conductivity structural adhesive, which has the functions of thermal conduction, bonding and cushioning.

[0107] In this configuration, the thermally conductive connection can be achieved by the bottom of the connecting part 21 and the first receiving groove 11 directly contacting the heating area of ​​the electrode post to transfer heat. Alternatively, the thermally conductive connection can be achieved by the connecting part 21 and the bottom of the first receiving groove 11 being connected to the heating area of ​​the electrode post through a thermally conductive adhesive block 5 to transfer heat.

[0108] In this embodiment, the thermally conductive adhesive block 5 can reduce the air gap between the cooling pipe 2 and the top cover of the battery cell, reduce the interface thermal resistance, and improve the heat dissipation efficiency.

[0109] In one embodiment, such as Figure 2 As shown, the first receiving groove 11 is opposite to the surface of the cooling pipe 2 or the cooling pipe 2 is connected to the mounting surface 42 by a first adhesive baffle 13 and a second adhesive baffle 14, and the heat-conducting adhesive block 5 is located between the first adhesive baffle 13 and the second adhesive baffle 14.

[0110] The first adhesive blocking part 13 and the second adhesive blocking part 14 are located on both sides of the connecting part 21, and both the first adhesive blocking part 13 and the second adhesive blocking part 14 are connected to the mounting surface 42.

[0111] Specifically, the plate body 1 has a first adhesive blocking part 13 and a second adhesive blocking part 14 respectively provided on the two opposite sides of the connecting part 21. When the CCS integrated array is pressed down for assembly, the lower ends of the first adhesive blocking part 13 and the second adhesive blocking part 14 directly abut against the mounting surface 42 of the battery cell 4, so that the thermally conductive adhesive block 5 is filled in the closed area enclosed by the first adhesive blocking part 13 and the second adhesive blocking part 14, preventing the adhesive from overflowing to both sides. That is, the first adhesive blocking part 13 and the second adhesive blocking part 14 can isolate the thermally conductive adhesive block 5 from the terminal post and the explosion-proof valve 43, limiting the thermally conductive adhesive block 5 to the area directly below the cooling pipe 2.

[0112] Optionally, the first adhesive blocking part 13 and the second adhesive blocking part 14 can be configured as a rib structure integrally injection molded from the plate body 1.

[0113] Optionally, the first adhesive blocking part 13 and the second adhesive blocking part 14 can be configured as foam adhesive blocking strips or polyurethane blocks.

[0114] In this embodiment, the adhesive-blocking structure can restrict the overflow of thermally conductive adhesive, preventing adhesive from wrapping around the electrode post, blocking the explosion-proof valve 43, and sticking to the side wall of the battery cell.

[0115] In one embodiment, the bottom of the second receiving groove 15 is provided with a second opening 16, which is used to receive part of the electrode post of the battery cell 4. Along the depth direction Y of the second receiving groove 15, the bottom of the second receiving groove 15 is higher than the bottom of the first receiving groove 11, but not higher than the top surface of the electrode post.

[0116] During assembly, the pole can pass upward through the second opening 16 and extend into the second receiving groove 15, directly contacting and welding with the busbar 3 inside the second receiving groove 15 to achieve conductivity.

[0117] By limiting the bottom of the second receiving groove 15 to be higher than the bottom of the first receiving groove 11, the protruding structure of the terminal post relative to the top cover of the battery cell 4 can be adapted, enabling a staggered arrangement and ensuring simultaneous top heat dissipation and conductive connection. Furthermore, by limiting the bottom of the second receiving groove 15 to be no higher than the top surface of the terminal post, the connection area between the terminal post and the busbar 3 located within the second receiving groove 15 can be located within the second receiving groove 15, ensuring connection stability.

[0118] According to an embodiment of this application, in a fourth aspect, an electrical device is provided, including a battery pack.

[0119] In this embodiment, the electrical device is equipped with the aforementioned battery pack, and the battery pack serves as the power source for the device, enabling the device to support 6C ultra-high rate overcharging, with controllable charging heat generation and significantly improved charging speed.

[0120] Electrical equipment can include electric bicycles, vehicles, ships, spacecraft, and electric toys. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as electric car toys, electric ship toys, and electric airplane toys. This application does not impose any special limitations on the aforementioned electrical equipment.

[0121] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A CCS integrated array carrier, characterized in that, include: The plate (1) has a first receiving groove (11) and a second receiving groove (15); Cooling pipe (2) is disposed in the first receiving groove (11). The cooling pipe (2) has a connecting part (21). The connecting part (21) and / or the bottom of the first receiving groove (11) are used for thermal connection with the battery cell (4). The second receiving slot (15) is used to receive the busbar (3).

2. The CCS integrated carrier according to claim 1, characterized in that, The bottom of the first receiving groove (11) is provided with a first opening (12), and the connecting part (21) is used to conduct heat to the battery cell (4) through the first opening (12).

3. The CCS integrated carrier according to claim 1, characterized in that, Along the depth direction (Y) of the second receiving groove (15), the bottom of the second receiving groove (15) is higher than the bottom of the first receiving groove (11).

4. The CCS integrated carrier according to claim 3, characterized in that, The bottom of the second receiving groove (15) is provided with a second opening (16), which is used to receive part of the terminal post of the battery cell (4).

5. The CCS integrated carrier according to claim 1, characterized in that, The cooling pipe (2) includes multiple pipe sections (22) and multiple connecting pipe sections (23). The multiple pipe sections (22) are arranged side by side at intervals along a first direction (X), and the multiple pipe sections (22) are connected in series through the connecting pipe sections (23).

6. The CCS integrated carrier according to claim 1, characterized in that, At least one baffle (24) is provided inside the cooling pipe (2). The baffle (24) is arranged along the extension direction of the cooling pipe (2) and the baffle (24) divides the cavity of the cooling pipe (2) into multiple independent channels. And / or, the cooling pipe (2) is provided with a plurality of ribs (25), and the plurality of ribs (25) are provided along the extension direction of the cooling pipe (2).

7. The CCS integrated carrier according to claim 1, characterized in that, The cooling pipe (2) has a cross-section perpendicular to its own length direction with an adjacent first side (26) and a second side (27), the length of the first side (26) is greater than the length of the second side (27), and the connecting part (21) is located on the first side (26).

8. A CCS integrated array, characterized in that, include: The CCS integrated carrier according to any one of claims 1-6; Information acquisition board (6) is connected to the board body (1); The busbar (3) is located in the second receiving tank (15); The information acquisition board (6) is electrically connected to the busbar (3).

9. The CCS integrated row according to claim 8, characterized in that, The first receiving slot (11) is provided with a first slot (17), the information acquisition board (6) is located on and covers the first slot (17), and the information acquisition board (6) is electrically connected to the busbar (3) through a conductive connector (7).

10. The CCS integrated row according to claim 8, characterized in that, There is a gap between the information acquisition board (6) and the cooling pipe (2).

11. A battery pack, characterized in that, include: Multiple battery cells (4), each battery cell (4) having two terminals and a mounting surface (42) located between the two terminals. The CCS integrated array carrier according to any one of claims 1-7, or the CCS integrated array according to any one of claims 8-10; The connecting part (21) is connected to the battery cell (4) on the mounting surface (42).

12. The battery pack according to claim 11, characterized in that, The bottom of the first receiving groove (11) is provided with a first opening (12), and a thermally conductive adhesive block (5) is provided in the first opening (12). The connecting part (21) is thermally connected to the mounting surface (42) through the thermally conductive adhesive block (5).

13. The battery pack according to claim 12, characterized in that, The first receiving groove (11) is away from the surface of the cooling pipe (2) or the cooling pipe (2) and the mounting surface are connected by a first adhesive baffle (13) and a second adhesive baffle (14). The thermally conductive adhesive block (5) is located between the first adhesive baffle (13) and the second adhesive baffle (14).

14. The battery pack according to claim 11, characterized in that, The bottom of the second receiving groove (15) is provided with a second opening (16), which is used to accommodate part of the electrode post of the battery cell (4). Along the depth direction (Y) of the second receiving groove (15), the bottom of the second receiving groove (15) is higher than the bottom of the first receiving groove (11) and not higher than the top surface of the electrode post.

15. An electrical appliance, characterized in that, include: The battery pack as described in any one of claims 11-14.

Images