Battery top cover structure, battery pack and vehicle

Abstract

The utility model relates to a battery top cover structure, battery pack and vehicle, the battery top cover structure includes: the cover plate and the pole, the cover plate includes the cover body and sinking platform that connect, the cover body has the first side and the second side that are arranged oppositely along its thickness direction, the sinking platform protrudes along the direction of departing from the second side, and the first side and the second side of sinking platform protrude along the direction of departing from the second side. A sinking table is arranged on the second side, a containing groove is formed in the sinking table, an opening is formed in the containing groove in the direction facing the second side, a mounting hole communicated with the containing groove is formed in the sinking table, the pole column is arranged in the mounting hole in a penetrating mode, and at least part of the pole column is arranged in the containing groove. According to the battery top cover structure, the protruding height of the pole towards the second side of the cover body can be shortened, and the space utilization rate of the battery top cover structure in the height direction can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a battery top cover structure, a battery pack and a vehicle. Background Art

[0002] In recent years, as the requirements for fast charging in electric vehicle technology have become increasingly higher, the charging current of electric vehicles has increased from 200A to 700A, so there are related cooling requirements for the poles of the battery cells and the bars connecting the battery cells. In related technologies, since the poles of the battery cells protrude from the top cover, after adding cooling plates to the poles of the battery cells, the height of the battery system will increase, thereby squeezing the height space of the chassis of the vehicle, and at the same time squeezing the passenger space of the vehicle, reducing the passenger's experience. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a battery top cover structure, which can shorten the height of the pole protruding toward the second side of the cover body, which is beneficial to improving the space utilization of the battery top cover structure along its height direction.

[0005] An embodiment of the present invention further provides a battery pack.

[0006] An embodiment of the utility model further provides a vehicle.

[0007] The battery top cover structure of an embodiment of the utility model includes: a cover plate, the cover plate includes a connected cover body and a sinker, the cover body has a first side and a second side arranged relatively along its thickness direction, the sinker protrudes in a direction away from the second side, a receiving groove is provided in the sinker, the receiving groove is open in the direction of the second side, and a mounting hole connected to the receiving groove is provided on the sinker; a pole, the pole is passed through the mounting hole, and the pole is at least partially arranged in the receiving groove.

[0008] According to the battery top cover structure of the embodiment of the utility model, since the sinking platform protrudes in the direction away from the second side and has a receiving groove, the pole can be at least partially arranged in the receiving groove to sink and hide the top of the pole, thereby reducing the height of the pole protruding from the second side of the cover body. Therefore, the pole of the battery top cover structure of the embodiment of the utility model adopts a sinking design, which can shorten the height of the pole protruding toward the second side of the cover body, which is conducive to improving the space utilization rate of the battery top cover structure in the height direction.

[0009] In some embodiments, a side of the pole adjacent to the opening of the receiving groove is not lower than the plane where the second side is located, and a height difference between a side of the pole adjacent to the opening of the receiving groove and the plane where the second side is located is 0 to 1.5 mm.

[0010] In some embodiments, the pole includes a pole top plate, a first block and a second block, one end of the first block is connected to the pole top plate, the other end of the first block is connected to the second block, the pole top plate is at least partially disposed in the accommodating groove, the first block is passed through the mounting hole, and the dimension of either the pole top plate or the second block along the axial direction perpendicular to the first block is greater than the dimension of the mounting hole.

[0011] In some embodiments, the battery top cover structure also includes a first insulating member, which is sealed between the pole and the sink, and the first insulating member is arranged at least partially around the opening of the accommodating groove and extends in an axial direction perpendicular to the pole.

[0012] In some embodiments, the first insulating member includes a first section, a second section, and a third section connected in sequence, the first section is arranged between the pole top plate and the inner bottom wall of the accommodating groove, the second section is arranged between the pole top plate and the inner side wall of the accommodating groove, the third section is arranged around the opening of the accommodating groove, and the third section is arranged along an axial extension perpendicular to the pole, an avoidance groove is provided on the second side, and the third section is at least partially installed in the avoidance groove.

[0013] In some embodiments, the first block is riveted to the pole top plate; and / or the first block is integrally formed with the second block.

[0014] In some embodiments, the battery top cover structure further includes a pressure plate, which is arranged adjacent to the opening of the receiving groove and welded to the cover body, and the pole is at least partially installed between the pressure plate and the inner bottom wall of the receiving groove.

[0015] In some embodiments, the sink includes a side wall portion and a bottom wall portion, the wall thickness of the bottom wall portion is smaller than the wall thickness of the side wall portion, and / or, the outer peripheral profile of the side wall portion gradually decreases in the direction from the second side toward the first side.

[0016] In some embodiments, the poles are at least two groups, and the two groups of poles are arranged at intervals on one of the sinks; or, the poles include a pole top plate and at least two connecting poles, and at least two of the connecting poles are arranged on one of the pole top plates, and the pole top plate is at least partially disposed in the accommodating groove, and the connecting poles are passed through the mounting holes.

[0017] A battery pack according to another embodiment of the present invention comprises a battery top cover structure, wherein the battery top cover structure is the battery top cover structure described in any one of the embodiments of the present invention; a shell, wherein a battery cell cavity is provided in the shell, wherein the first side is provided on the inner side of the battery cell cavity, and the second side is provided on the outer side of the battery cell cavity; and a battery cell, wherein the battery cell is provided in the battery cell cavity and connected to the pole.

[0018] According to the battery pack of the embodiment of the utility model, by adopting the above-mentioned design of the battery top cover structure, the overall height of the battery pack can be shortened, which is beneficial to improving the space utilization of the battery pack along the height direction.

[0019] In some embodiments, the battery pack further includes an explosion-proof valve, which is disposed on a side of the shell away from the battery top cover structure.

[0020] In some embodiments, the battery top cover structure also includes a current overflow plate, which is arranged adjacent to the first side of the cover body, and the current overflow plate has a first electrical contact position and a second electrical contact position. In the axial direction of the pole, the second electrical contact position is closer to the cover body than the first electrical contact position, and the first electrical contact position and the second electrical contact position are arranged at an axial interval perpendicular to the pole, the first electrical contact position is connected to the pole, and the second electrical contact position is connected to the pole ear of the battery cell.

[0021] A vehicle according to another embodiment of the present invention comprises the battery pack according to the embodiment of the present invention.

[0022] According to the vehicle of the embodiment of the utility model, by shortening the overall height of the battery pack, it is helpful to increase the usable space in the passenger compartment of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a battery pack according to an embodiment of the present utility model.

[0024] Figure 2 It is a schematic diagram of a battery pack according to another embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of a battery top cover structure of an embodiment of the utility model.

[0026] Figure 4 It is a partial cross-sectional view of the battery top cover structure of an embodiment of the utility model.

[0027] Figure 5 It is a partial cross-sectional view of the cover plate of the battery top cover structure of an embodiment of the utility model.

[0028] Figure 6 It is a top view of the battery top cover structure of an embodiment of the utility model.

[0029] Figure 7 It is a top view of a battery top cover structure according to another embodiment of the utility model.

[0030] Figure 8 It is a partial cross-sectional view of a battery top cover structure according to another embodiment of the utility model.

[0031] Reference numerals:

[0032] 1. Cover plate; 11. Cover body; 111. First side; 112. Second side; 1121. Avoidance groove; 12. Sink; 121. Side wall; 122. Bottom wall; 1221. Mounting hole; 123. Accommodation groove;

[0033] 2. Pole; 21. Pole top plate; 22. Connecting column; 221. First block; 222. Second block;

[0034] 3. first insulating member; 31. first section; 32. second section; 33. third section;

[0035] 4. second insulating member; 41. fourth section; 42. fifth section;

[0036] 5. Current-carrying sheet; 51. First electrical contact position; 42. Second electrical contact position;

[0037] 6. Shell;

[0038] 7. Explosion-proof valve;

[0039] 8. Press plate. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0041] Please refer to the following Figures 1 to 8 A battery top cover structure, a battery pack and a vehicle according to embodiments of the present utility model are described.

[0042] like Figures 1 to 8 As shown, the battery top cover structure according to the embodiment of the utility model comprises a cover plate 1 and a pole 2. The cover plate 1 comprises a cover body 11 and a sink 12 connected to each other. The cover body 11 has a thickness direction (such as Figure 5 The first side 111 and the second side 112 are arranged relatively to each other in the up-down direction in the middle, and the sink 12 protrudes in a direction away from the second side 112.

[0043] The pole 2 is passed through the mounting hole 1221, and at least part of the pole 2 is disposed in the receiving groove 123. The sink 12 is provided with a receiving groove 123, which opens toward the second side 112, and the sink 12 is provided with a mounting hole 1221 communicating with the receiving groove 123.

[0044] In other words, the cover body 11 has a first side 111 (eg, Figure 5 The lower side of the middle cover body 11) and the second side 112 away from the battery cell (such as Figure 5 The upper side of the middle cover body 11), the sink 12 protrudes downward in a direction away from the second side 112. That is, the sink 12 protrudes toward the direction close to the battery cell, and the receiving groove 123 opens toward the side away from the battery cell.

[0045] According to the battery top cover structure of the embodiment of the utility model, since the sink 12 protrudes in the direction away from the second side 112 and has a receiving groove 123, the pole 2 can be at least partially arranged in the receiving groove 123 to sink and hide the top of the pole 2, thereby reducing the height of the pole 2 protruding from the second side 112 of the cover body 11. Therefore, the pole of the battery top cover structure of the embodiment of the utility model adopts a sinking design, which can shorten the height of the pole 2 protruding toward the second side 112 of the cover body 11, which is conducive to improving the space utilization rate of the battery top cover structure in its height direction.

[0046] Alternatively, if Figures 3 to 5 As shown, the side of the pole 2 adjacent to the opening of the receiving groove 123 is not lower than the plane where the second side 112 is located, and the height difference between the side of the pole 2 adjacent to the opening of the receiving groove 123 and the plane where the second side 112 is located is 0-1.5 mm.

[0047] Among them, the pole 2 includes a pole top plate 21 and a connecting column 22, the pole top plate 21 is at least partially arranged in the accommodating groove 123, the connecting column 22 is passed through the mounting hole 1221, one end of the connecting column 22 is connected to the pole top plate 21, and the other end of the connecting column 22 is electrically connected to the battery cell.

[0048] For example, the side of the pole top plate 21 facing away from the mounting hole 1221 is flush with the second side 112. The upper end surface of the pole top plate 21 is flush with the upper side surface of the cover body 11, which does not affect the electrical connection between the pole 2 and the aluminum bar, and can reduce the height of the pole 2 outside the battery cell, shorten the height of the battery pack as a whole, and is conducive to improving the space utilization of the battery pack along the height direction.

[0049] For another example, the pole top plate 21 protrudes from the receiving groove 123, and the height difference between the side of the pole top plate 21 away from the mounting hole 1221 and the second side 112 is less than or equal to 1.5 mm. That is, a portion of the pole top plate 21 is embedded in the receiving groove 123, and another portion of the pole top plate 21 protrudes from the outside of the receiving groove 123, and the protruding height is less than or equal to 1.5 mm, so as to improve the space utilization of the battery pack along the height direction.

[0050] Optionally, the cover body 11 is an aluminum sheet, and the pole 2 can be an aluminum alloy or a copper-aluminum composite material. For example, the positive pole 2 is made of an aluminum alloy, and the negative pole 2 is a copper-aluminum composite material, wherein the pole top plate 21 is an aluminum alloy and the connecting column 22 is copper.

[0051] In some embodiments, Figure 4 As shown, the connecting column 22 includes a first block 221 and a second block 222, one end of the first block 221 is connected to the pole top plate 21, and the other end of the first block 221 is connected to the second block 222. The second block 222 is arranged on the side of the sink 12 away from the receiving groove 123, and the first block 221 is penetrated into the mounting hole 1221. In other words, the upper end of the first block 221 is connected to the pole top plate 21, and the lower end of the first block 221 is connected to the second block 222. Among them, the size of either the pole top plate 21 and the second block 222 along the axial direction perpendicular to the first block 221 is greater than the size of the mounting hole 1221, and the size of the receiving groove 123 along the axial direction perpendicular to the first block 221 also needs to be greater than the size of the mounting hole 1221 and the size of the first block 221.

[0052] It can be understood that the outer peripheral contour of the projection of the mounting hole 1221 perpendicular to the axial direction of the first block 221 is located within the outer peripheral contour of either the pole top plate 21 or the second block 222. Thus, the pole top plate 21 and the second block 222 can simultaneously clamp and limit the first block 221 to limit the first block 221 from detaching upward or downward from the cover plate 1, which is beneficial to improving the reliability of the connection between the pole 2 and the cover plate 1.

[0053] For example, the pole top plate 21 , the first block 221 and the second block 222 are all cylindrical structures, the mounting hole 1221 is a circular hole, and the inner diameter of the mounting hole is smaller than the outer diameter of any one of the pole top plate 21 and the second block 222 .

[0054] Optionally, the first block 221 is adjacent to one end of the pole top plate 21 (eg Figure 4 The upper end of the first block 221 is riveted to the pole top plate 21, and the first block 221 and the second block 222 are integrally formed, thereby improving the firmness of the pole 2 assembly, and there is no problem of reduced current capacity caused by the weld of the traditional welding process.

[0055] In another example, if Figure 8As shown, the battery top cover structure also includes a pressing plate 8, which is arranged adjacent to the opening of the receiving groove 123 and welded to the cover body 11, and the pole 2 is at least partially installed between the pressing plate 8 and the inner bottom wall of the receiving groove 123. It can be understood that after the pole 2 is installed in place, the pressing plate 8 is pressed on the pole 2, and then the pressing plate 8 is welded to the cover body 11, thereby limiting the pole 2 from escaping from the receiving groove 123 upward. The battery top cover structure of the embodiment of the utility model fixes the pole by welding the pressing plate 8, has a simple structure, and is conducive to improving the assembly efficiency of the battery top cover structure.

[0056] Alternatively, if Figure 4 As shown, the battery top cover structure also includes a first insulating member 3, which is sealed and connected between the pole 2 and the sink 12, and the first insulating member 3 is at least partially arranged around the opening of the receiving groove 123, and extends in an axial direction perpendicular to the pole 2. It can be understood that the first insulating member 3 has the functions of insulation and sealing. For example, the first insulating member 3 can be a plastic member to avoid the problem of short circuit between the pole 2 and the cover body 11. Since the first insulating member 3 is at least partially arranged around the opening of the receiving groove 123 and extends in an axial direction perpendicular to the pole 2, the creepage distance and electrical clearance between the pole top plate 21 and the cover plate 1 can be increased, and the risk of short circuit between the pole 2 and the cover plate 1 can be reduced, so as to improve the safety of the battery cell operation.

[0057] In one example, if Figure 4 and Figure 5 As shown, the first insulating member 3 includes a first section 31, a second section 32 and a third section 33 connected in sequence, the first section 31 is arranged between the pole top plate 21 and the inner bottom wall of the receiving groove 123, the second section 32 is arranged between the pole top plate 21 and the inner side wall of the receiving groove 123, and the third section 33 is adjacent to the opening of the receiving groove 123 and arranged around the outer periphery of the second section 32. In other words, the third section 33 is arranged around the opening of the receiving groove 123, and the third section 33 is arranged along the axial direction perpendicular to the pole 2.

[0058] It can be understood that the first section 31, the second section 32 and the third section 33 are arranged in sequence along the thickness direction of the cover plate 1, the first section 31 is parallel to the thickness direction of the cover plate 1, the first section 31 is clamped between the bottom wall of the pole top plate 21 and the bottom wall of the sink 12, the second section 32 is perpendicular to the thickness direction of the cover plate 1, and the second section 32 is clamped between the side wall of the pole top plate 21 and the side wall of the receiving groove 123. The third section 33 is parallel to the thickness direction of the cover plate 1, the third section 33 is located on the upper side of the second section 32 and extends horizontally outward, thereby increasing the creepage distance and electrical clearance between the pole top plate 21 and the cover plate 1, reducing the risk of short circuit between the pole 2 and the cover plate 1, and improving the safety of the battery cell operation.

[0059] Furthermore, if Figure 4 and Figure 5 As shown, a relief groove 1121 is provided on the second side 112, and the relief groove 1121 is arranged around the opening of the receiving groove 123, and the third section 33 is at least partially fitted in the relief groove 1121. It can be understood that the relief groove 1121 is an annular structure and surrounds the opening of the receiving groove 123, and the third section 33 can be embedded in the relief groove 1121 to reduce the assembly height of the battery top cover structure. For example, the upper end surface of the third section 33 is flush with the upper side surface of the cover body 11.

[0060] Alternatively, if Figure 4 and Figure 5 As shown, the battery top cover structure also includes a second insulating member 4, which is sealed and installed between the connecting column 22 and the sink 12. Specifically, the second insulating member 4 includes a fourth section 41 and a fifth section 42 that are connected, the fourth section 41 is arranged between the first block 221 and the mounting hole 1221, and the fifth section 42 is arranged between the second block 222 and the sink 12. It can be understood that the fourth section 41 is sleeved on the outer periphery of the first block 221, the inner wall of the fourth section 41 is in contact with the outer wall of the first block 221, and the outer wall of the fourth section 41 is in contact with the inner wall of the mounting hole 1221. The fifth section 42 is clamped between the sink 12 and the second block 222, thereby further avoiding the problem of short circuit between the pole 2 and the cover body 11, which is beneficial to improving the safety of the battery cell operation.

[0061] In some embodiments, Figure 4 and Figure 5 As shown, the sink 12 includes a side wall portion 121 and a bottom wall portion 122, and the side wall portion 121 and the bottom wall portion 122 form a receiving groove 123. The side wall portion 121 is connected to the cover body 11, and the mounting hole 1221 is provided on the bottom wall portion 122. The wall thickness of the bottom wall portion 122 is smaller than the wall thickness of the side wall portion 121, which is beneficial to reduce the height dimension of the battery top cover structure and improve the space utilization rate in the height direction of the battery pack.

[0062] Alternatively, if Figure 5 As shown, in the direction from the second side 112 to the first side 111 (as shown in FIG. Figure 5 In other words, the outer peripheral profile of the side wall portion 121 gradually decreases in the direction away from the cover body 11. It can be understood that the side wall portion 121 of the sink 12 has a certain draft angle so that the sink 12 is easy to demold during processing, which is beneficial to improve the production efficiency of the battery top cover structure.

[0063] In some embodiments, Figure 2As shown, there are at least two groups of poles 2, and the two groups of poles 2 are arranged at intervals on a sink 12. It can be understood that the two groups of poles 2 can be both positive poles 2 or both negative poles 2. In other words, both the positive poles 2 (negative poles 2) can adopt a bipolar pole 2 design, that is, one or more identical poles 2 are added next to the original poles 2, thereby reducing the impedance of the cell current passing parts and improving the current passing capacity of the cell.

[0064] In other examples, such as Figure 6 and Figure 7 As shown, there is one pole top plate 21, and there are at least two connecting poles 22, and the two connecting poles 22 are arranged at intervals on the pole top plate 21. In other words, the positive pole 2 (negative pole 2) can add one or more connecting poles 22 beside the original pole 2, and the two connecting poles 22 share one pole top plate 21, which can also reduce the impedance of the cell current passing parts and improve the current passing capacity of the cell.

[0065] A battery pack of another embodiment of the present invention comprises a battery top cover structure, a shell 6 and a battery cell (not shown). The battery top cover structure is the battery top cover structure of any one of the present invention. A battery cell cavity is provided in the shell 6. The cover body 11 is provided on one side of the shell 6 to seal the battery cell cavity. The first side is provided on the inner side of the battery cell cavity, and the second side is provided on the outer side of the battery cell cavity. The battery cell is provided in the battery cell cavity and is connected to the pole 2.

[0066] The technical advantages of the battery pack according to the embodiment of the utility model are the same as the advantages of the battery top cover structure in the above-mentioned embodiment, and the overall height of the battery pack can be shortened, which is beneficial to improving the space utilization of the battery pack along the height direction.

[0067] Optionally, the battery pack further includes an explosion-proof valve 7, which is disposed on a side of the housing 6 away from the battery top cover structure. It is understandable that the battery pack of the embodiment of the utility model installs the explosion-proof valve 7 at the bottom of the housing 6 to reserve sufficient installation space for the pole 2, and has better safety.

[0068] In some embodiments, Figure 4 As shown, the battery pack further includes a current-passing sheet 5, which is disposed on a side of the cover plate 1 adjacent to the battery cell. The current-passing sheet 5 has a first electrical contact position 51 and a second electrical contact position 52. In the axial direction of the pole 2, the second electrical contact position 52 is closer to the cover body 11 than the first electrical contact position 51. Figure 5 As shown, the second electrical contact position 52 is higher than the first electrical contact position 51. The first electrical contact position 51 and the second electrical contact position 52 are arranged in a spaced relationship perpendicular to the thickness direction of the cover plate 1, so that the first electrical contact position 51 and the second electrical contact position 52 are staggered. The first electrical contact position 51 is electrically connected to the connecting column 22, and the second electrical contact position 52 is electrically connected to the tab of the battery cell.

[0069] It can be understood that the tabs of the battery cell are arranged at intervals with the pole 2 along the thickness direction perpendicular to the cover plate 1 (such as the length direction of the battery), and are electrically connected by the overcurrent sheet 5. In other words, since the total height of the pole 2 cannot be reduced, the amount of intrusion of the pole 2 into the battery cell increases. In order to further improve the internal space utilization of the shell 6, the overcurrent sheet 5 is bent, for example, it can be bent into a Z shape, so that the tabs of the battery cell can be arranged in a staggered manner with the pole 2, and the two sides of the overcurrent sheet 5 are welded to the pole 2 and the tabs respectively. The problem of increased space occupation at the top of the battery cell caused by the coaxiality of the pole 2 and the tab can be offset by the spatial staggered arrangement, thereby improving the internal space utilization of the battery cell and facilitating the increase of the battery cell capacity.

[0070] A vehicle according to another embodiment of the present invention comprises the battery pack according to the embodiment of the present invention.

[0071] The technical advantages of the vehicle of the embodiment of the utility model are the same as those of the battery top cover structure and the battery pack in the above-mentioned embodiment, and help to increase the usable space in the passenger compartment of the whole vehicle.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0076] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0077] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations of the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A battery top cover structure, characterized in that: include: A cover plate (1), the cover plate (1) comprising a connected cover body (11) and a sink (12), the cover body (11) having a first side (111) and a second side (112) arranged opposite to each other along a thickness direction thereof, the sink (12) protruding in a direction away from the second side (112), a receiving groove (123) being provided in the sink (12), the receiving groove (123) opening in a direction toward the second side (112), and a mounting hole (1221) communicating with the receiving groove (123) being provided on the sink (12); A pole (2), the pole (2) being inserted through the mounting hole (1221), and the pole (2) being at least partially disposed in the receiving groove (123).

2. The battery top cover structure according to claim 1, characterized in that: A side of the pole (2) adjacent to the opening of the receiving groove (123) is not lower than the plane where the second side (112) is located, and a height difference between a side of the pole (2) adjacent to the opening of the receiving groove (123) and the plane where the second side (112) is located is 0 to 1.5 millimeters.

3. The battery top cover structure according to claim 1, characterized in that: The pole (2) comprises a pole top plate (21), a first block (221) and a second block (222); one end of the first block (221) is connected to the pole top plate (21); the other end of the first block (221) is connected to the second block (222); the pole top plate (21) is at least partially disposed in the accommodating groove (123); the first block (221) is passed through the mounting hole (1221); and the dimension of either the pole top plate (21) or the second block (222) along an axial direction perpendicular to the first block (221) is greater than the dimension of the mounting hole (1221).

4. The battery top cover structure according to claim 3, characterized in that: The battery top cover structure also includes a first insulating member (3), the first insulating member (3) being sealingly connected between the pole (2) and the sink (12), the first insulating member (3) being arranged at least partially around the opening of the accommodating groove (123) and extending in an axial direction perpendicular to the pole (2).

5. The battery top cover structure according to claim 4, characterized in that: The first insulating member (3) comprises a first section (31), a second section (32) and a third section (33) which are connected in sequence, the first section (31) being arranged between the pole top plate (21) and the inner bottom wall of the accommodating groove (123), the second section (32) being arranged between the pole top plate (21) and the inner side wall of the accommodating groove (123), the third section (33) being arranged around the opening of the accommodating groove (123), and the third section (33) being arranged along an axial direction perpendicular to the pole (2), a avoiding groove (1121) being arranged on the second side (112), and the third section (33) being at least partially installed in the avoiding groove (1121).

6. The battery top cover structure according to claim 3, characterized in that: The first block (221) is riveted to the pole top plate (21); And / or, the first block (221) and the second block (222) are integrally formed.

7. The battery top cover structure according to claim 1, characterized in that: The battery top cover structure also includes a pressing plate (8), which is arranged adjacent to the opening of the receiving groove (123) and welded to the cover body (11), and the pole (2) is at least partially installed between the pressing plate (8) and the inner bottom wall of the receiving groove (123).

8. The battery top cover structure according to claim 1, characterized in that: The sink (12) includes a side wall portion (121) and a bottom wall portion (122), wherein the wall thickness of the bottom wall portion (122) is smaller than the wall thickness of the side wall portion (121), and / or, in the direction from the second side (112) toward the first side (111), the outer peripheral contour of the side wall portion (121) gradually decreases.

9. The battery top cover structure according to any one of claims 1 to 8, characterized in that: The poles (2) are at least two groups, and the two groups of poles (2) are arranged at intervals on one sinking platform (12); Alternatively, the pole (2) comprises a pole top plate (21) and at least two connecting poles (22), at least two connecting poles (22) are arranged on one pole top plate (21), the pole top plate (21) is at least partially disposed in the accommodating groove (123), and the connecting pole (22) is passed through the mounting hole (1221).

10. A battery pack, characterized in that: include: A battery top cover structure, wherein the battery top cover structure is the battery top cover structure according to any one of claims 1 to 9; A shell (6), wherein a battery cell cavity is provided in the shell (6), the cover body (11) is provided on the shell (6) to cover the battery cell cavity, the first side (111) is provided on the inner side of the battery cell cavity, and the second side (112) is provided on the outer side of the battery cell cavity; A battery cell is arranged in the battery cell cavity and connected to the pole (2).

11. The battery pack according to claim 10, characterized in that: The battery pack further comprises a current overflow sheet (5), the current overflow sheet (5) being arranged adjacent to a first side of the cover body (11), the current overflow sheet (5) having a first electrical contact position (51) and a second electrical contact position (52), in the axial direction of the pole (2), the second electrical contact position (52) being closer to the cover body (11) than the first electrical contact position (51), the first electrical contact position (51) and the second electrical contact position (52) being arranged at intervals along an axial direction perpendicular to the pole (2), the first electrical contact position (51) being connected to the pole (2), and the second electrical contact position (52) being connected to a pole ear of the battery cell.

12. The battery pack according to claim 10, characterized in that: The battery pack further comprises an explosion-proof valve (7), wherein the explosion-proof valve (7) is arranged on a side of the housing (6) away from the battery top cover structure.

13. A vehicle, characterized in that: A battery pack comprising any one of claims 10-12.

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