Sealing element, battery module and electric device

Abstract

The embodiment of the utility model belongs to the technical field of batteries, and relates to a sealing element, a battery module and an electric device. The sealing element is used for sealing a pole of a battery and comprises a main body provided with a first containing cavity, a second containing cavity, a fixing groove and a through hole, the through hole is communicated with the first containing cavity and the second containing cavity, and the fixing groove is located in the second containing cavity; the output pole is located in the second containing cavity and comprises a connecting piece and a fixing piece which are connected with each other, the connecting piece is used for being connected with the pole, and at least part of the fixing piece is located in the fixing groove and used for being matched with the fixing groove to limit movement and rotation of the connecting piece; and the sealing cover is used for sealing the second accommodating cavity. The sealing piece is sleeved on the battery through the first accommodating groove and the through hole, the pole is sealed through the sealing cover, and meanwhile, the rotation and movement of the output pole are limited through the matching of the fixing piece and the fixing groove, so that the pole is not broken due to the displacement of the output pole in the subsequent processing during the production, the stability of the battery is effectively improved, and the service life of the battery is effectively prolonged.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a seal, a battery module and an electrical device. Background Art

[0002] In the prior art, the core of electrical devices such as electric vehicles and portable charging piles lies in their energy system, namely, the battery module. The battery module needs to have high energy density, stability and heat dissipation performance to meet the use requirements of the electrical devices. In order to improve the energy density of the battery module, the battery module usually includes a plurality of single cells, and the single cells in the battery module need to be sealed by a seal to seal the pole of the single cell, so as to prevent water and oxygen from entering the pole and causing single cell failure or reduced life.

[0003] The seal usually includes an output electrode, which is used to connect with the pole of the single cell to complete the electrical connection between the seal and the single cell.

[0004] In the prior art, due to the low structural strength of the pole, after the output pole and the pole are connected, if the output pole needs to be connected to other structures, or if the output pole rotates or shifts due to collision or accidental touch, the pole may be torn and ruptured, causing the battery cell to leak, resulting in low production efficiency and low safety of the battery module. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present application is the low production efficiency and low safety of existing battery modules.

[0006] In order to solve the above technical problems, the embodiment of the present application adopts the following solution:

[0007] A seal for sealing a battery pole, the seal comprising:

[0008] A main body, wherein the main body is provided with a first accommodating cavity, a second accommodating cavity, a fixing groove and a through hole, the through hole connects the first accommodating cavity and the second accommodating cavity, the fixing groove is located in the second accommodating cavity, the first accommodating cavity is used to accommodate the battery, and the through hole is used to accommodate the pole;

[0009] An output pole, the output pole is located in the second accommodating cavity, and comprises a connecting member and a fixing member connected to each other, the connecting member is used to be connected to the pole, at least part of the fixing member is located in the fixing groove, and is used to cooperate with the fixing groove to limit the movement and rotation of the connecting member;

[0010] A sealing cover, wherein the sealing cover is used to seal the second accommodating cavity.

[0011] Further, the main body includes a partition, a bottom plate and two side plates arranged opposite to each other, wherein the bottom plate and the partition are both located between the two side plates, the partition, the bottom plate and the two side plates define a first accommodating cavity and a second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are respectively located on two opposite sides of the partition;

[0012] One end of the partition is provided with a through hole, and the other end and the bottom plate define a fixing groove.

[0013] Furthermore, the separator includes a first sub-separator and a second sub-separator connected to each other, and the first sub-separator and the second sub-separator are bent to form an acute angle or a right angle;

[0014] The through hole is disposed in the first sub-separator, and one end of the second sub-separator away from the first sub-separator defines a fixing groove with the bottom plate.

[0015] Further, one end of the second sub-separator away from the first sub-separator includes a contact portion and a relative portion connected to each other;

[0016] The bottom plate is arranged parallel to the first sub-separator, the contact portion is connected to the bottom plate, the relative portion is parallel to the bottom plate, and the relative portion, the contact portion, the bottom plate and the two side plates jointly define a fixing groove.

[0017] Further, the connecting member includes a first sub-connecting member and a second sub-connecting member connected to each other, and the fixing member includes a first sub-fixing member and a second sub-fixing member connected to each other;

[0018] The first sub-connector is provided with a through hole, an acute angle or a right angle is formed between the first sub-connector and the second sub-connector, an acute angle or a right angle is formed between the first sub-fixing member and the second sub-fixing member, the second sub-connector is connected to the first sub-fixing member, and the second sub-fixing member is located in the fixing groove and has a gap with the inner wall of the fixing groove.

[0019] Furthermore, the sealing cover is provided with a first limiting protrusion and a second limiting protrusion at two opposite ends thereof respectively;

[0020] A first limiting groove is arranged at one end of the partition away from the bottom plate, and a second limiting groove is arranged at the bottom plate. The first limiting protrusion is clamped in the first limiting groove, and the second limiting protrusion is clamped in the second limiting groove.

[0021] Further, the first limiting protrusion is an elastic member, and the first limiting protrusion includes a first bending portion, a second bending portion, a third bending portion and a protruding portion connected in sequence, the first bending portion is connected to the sealing cover, and a deformation gap is formed between the first bending portion, the second bending portion and the third bending portion;

[0022] The protrusion is connected to a side of the third bending portion away from the first bending portion, and the protrusion is located in the first limiting groove; or,

[0023] The second limiting protrusion is an elastic member, and the second limiting protrusion includes a first bending portion, a second bending portion, a third bending portion and a protruding portion connected in sequence, the first bending portion is connected to the sealing cover, and a deformation gap is formed between the first bending portion, the second bending portion and the third bending portion;

[0024] The protrusion is connected to a side of the third bending portion away from the first bending portion, and the protrusion is located in the second limiting groove.

[0025] Further, a first guide curved surface is provided at the connection between the third bending portion and the second bending portion, and the first guide curved surface faces the direction where the main body is located; and / or,

[0026] A second guide curved surface is disposed at one end of the protruding portion away from the third bending portion, and the second guide curved surface faces the direction where the main body is located.

[0027] Correspondingly, the present application also provides a battery module, which includes a plurality of battery cells and a plurality of seals described in the above embodiments, wherein the seals and the battery cells are connected in a one-to-one correspondence.

[0028] Correspondingly, the present application also provides an electrical device, which includes the battery module described in the above embodiment.

[0029] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0030] The seal is sleeved on the battery through the first accommodating groove and the through hole, and the sealing of the pole is achieved through the sealing cover. At the same time, the rotation and movement of the output pole are limited by the cooperation of the fixing member and the fixing groove, so that there is no need to worry about the displacement of the output pole in subsequent processing and causing the pole to break during production, which effectively improves the stability and service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 is an exploded schematic diagram of the seal;

[0033] Figure 2 It is a schematic diagram of the structure of the seal after removing the sealing cover;

[0034] Figure 3 is a schematic structural diagram of a battery provided with a seal;

[0035] Figure 4 yes Figure 3 Another structural schematic diagram of a battery having a sealing member disposed therein;

[0036] Figure 5 yes Figure 4 A schematic cross-sectional view of a battery with a seal in the AA direction;

[0037] Figure 6 yes Figure 5 The enlarged schematic diagram of point B in FIG.

[0038] Reference numerals:

[0039] Sealing member 10, first accommodating cavity 20, fixing groove 30, battery 40, pole 41, sealing cover 100, first limiting protrusion 110, second limiting protrusion 120, first bending portion 121, second bending portion 122, third bending portion 123, protruding portion 124, connecting member 210, first sub-connecting member 211, second sub-connecting member 212, fixing member 220, first sub-fixing member 221, second sub-fixing member 222, mounting hole 230, main body 300, partition 310, first sub-partition 311, second sub-partition 312, first limiting groove 313, contact portion 314, relative portion 315, through hole 316, bottom plate 320, second limiting groove 321, side plate 330. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0041] In this application, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In addition, in the description of this application, the term "including" means "including but not limited to". The terms first, second, third, etc. are used only as labels and do not impose numerical requirements or establish an order.

[0042] In this application, "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0043] In the present application, "at least one" means one or more, and "plurality" means two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can all mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, c can be single or multiple, respectively.

[0044] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present application; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range. Figure 1 The Z direction is the up and down direction, the X direction is the left and right direction, and the Y direction is the front and back direction.

[0045] Please refer to Figures 1 to 6 The present embodiment provides a sealing member 10 for sealing a pole 41 of a battery 40. The sealing member 10 includes:

[0046] The main body 300 is provided with a first accommodating cavity 20, a second accommodating cavity (not marked in the figure), a fixing groove 30 and a through hole 330. The through hole 330 connects the first accommodating cavity 20 and the second accommodating cavity. The fixing groove 30 is located in the second accommodating cavity. The first accommodating cavity 20 is used to accommodate the battery 40, and the through hole 330 is used to accommodate the pole 41.

[0047] The output pole is located in the second accommodating cavity, and includes a connecting member 210 and a fixing member 220 connected to each other. The connecting member 210 is used to connect with the pole 41, and at least part of the fixing member 220 is located in the fixing groove 30, and is used to cooperate with the fixing groove 30 to limit the movement and rotation of the connecting member 210;

[0048] The sealing cover 100 is used to seal the second accommodating cavity.

[0049] In this embodiment, please refer to Figure 1 and Figure 3 , the first accommodating cavity 20 can accommodate at least part of the battery 40, that is, the main body 300 can be sleeved on the part of the battery 40 where the pole 41 is provided. At this time, the pole 41 of the battery 40 passes through the through hole 330 and abuts against the lower surface of the connector 210 to extend the pole 41. Because at least part of the fixing member 220 is located in the fixing groove 30 and cooperates with the fixing groove 30, the fixing member 220 cannot move or rotate, and thus the connector 210 connected to the fixing member 220 cannot move or rotate. When the output pole needs to be connected to other structures, or when the output pole is about to rotate or shift due to collision or accidental touch, its structure is stable and the pole 41 will not break and leak.

[0050] For example, see Figure 1 The output pole fixing member 220 is provided with a mounting hole 230. By inserting a bolt into the mounting hole 230, the output pole can be further fixed. Alternatively, a bolt is provided to pass through the sealing cover and the mounting hole 230, and a confluence piece and other structures are provided to connect the bolts extending from the sealing members 10 on different batteries, so as to complete the series or parallel connection of the batteries in the battery module. Therefore, when a bolt needs to be installed in the mounting hole 230 on the output pole, the original output pole may be twisted due to torque. Figure 1 The Y axis rotates, which causes the pole 41 to break. However, because at least part of the fixing member 220 is located in the fixing groove 30, the output pole is restricted in position and the pole 41 is in a safe stress state.

[0051] In summary, the seal 10 of this embodiment is sleeved on the battery 40 through the first accommodating cavity 20 and the through hole 330, and the sealing of the pole 41 is achieved through the sealing cover 100. At the same time, the seal 10 limits the rotation and movement of the output pole through the cooperation of the fixing member 220 and the fixing groove 30, so that when the seal 10 is produced, there is no need to worry about the output pole causing the pole 41 to break during subsequent processing, which also effectively improves the stability of the connection between the seal 10 and the battery 40 and improves the service life of the battery 40.

[0052] It should be understood that the connection between the pole 41 and the connector 210 includes welding, snap connection, etc. There can be multiple fixing slots 30 and fixing members 220, and multiple fixing members 220 are connected to the same connector 210 and are respectively correspondingly mounted in different fixing slots 30.

[0053] For further information, please refer to Figures 1 to 3 The main body 300 includes a partition 310, a bottom plate 320 and two side plates 330 arranged opposite to each other, wherein the partition 310 and the bottom plate 320 are both located between the two side plates 330, and the partition 310, the bottom plate 320 and the two side plates 330 define a first accommodating cavity 20 and a second accommodating cavity, and the first accommodating cavity 20 and the second accommodating cavity are respectively located on opposite sides of the partition 310;

[0054] A through hole 330 is disposed at one end of the partition 310 , and a fixing groove 30 is defined by the other end of the partition 310 and the bottom plate 320 .

[0055] In this embodiment, the main body 300 is composed of only a separator 310, a bottom plate 320 and a side plate 330, and has a simple structure, high space utilization and low production cost. At the same time, the separator 310 and the bottom plate 320 are located between the side plates 330, and the separator 310, the bottom plate 320 and the two side plates 330 define and form a first accommodating cavity 20 and a second accommodating cavity. Therefore, the bottom plate 320 and the separator 310 not only divide the inner wall space of the seal 10 for installation of the output pole and the battery 40 respectively, but also connect the adjacent side plates 330 to improve the structural strength of the seal 10.

[0056] In summary, the seal 10 of this embodiment has a simple structure, high space utilization, low production cost, and high structural strength. Therefore, the battery 40 and the battery module provided with the seal 10 have high space utilization and high energy density.

[0057] It can be understood that the width of the output pole (the width direction is the X direction) can be equal to the width of the partition 310. At this time, the left and right sides of the output pole are respectively abutted against the inner wall of a side plate 330. When the output pole rotates around the Z axis, it will be hindered by the force from the side plate 330, thereby making the output pole structure stable.

[0058] For further information, please refer to Figure 1 to Figure 2 The separator 310 includes a first sub-separator 311 and a second sub-separator 312 connected to each other, and the first sub-separator 311 and the second sub-separator 312 are bent to form an acute angle or a right angle;

[0059] The through hole 330 is disposed in the first sub-partition 311 , and one end of the second sub-partition 312 away from the first sub-partition 311 defines a fixing groove 30 with the bottom plate 320 .

[0060] In this embodiment, an acute angle or a right angle is completely formed between the first sub-separator 311 and the second sub-separator 312, and the through hole 330 is located in the first sub-separator 311, and the fixing groove 30 is formed by the bottom plate 320 and the end of the second sub-separator 312 away from the first sub-separator 311, so the separator 310 is as shown in FIG. Figure 1 In the L-shaped structure shown in the figure, the first accommodating cavity 20 is a rectangular space, and the second accommodating cavity is limited to an L-shaped space. At this time, the partition 310 provides a setting space for the fixing groove 30 that is perpendicular to the axis of the through hole 330, that is, the groove depth direction of the fixing groove 30 is perpendicular to the hole depth direction of the through hole 330. The output pole is simultaneously restricted by the connection member 210 and the pole 41, as well as the rotation and movement restrictions in the XZ plane (fixing member 220 and fixing groove 30). The force points at both ends of the output pole are located on different planes in space, so the structure of the output pole is more stable.

[0061] For further information, please refer to Figure 1 , Figure 2 and Figure 6 , one end of the second sub-separator 312 away from the first sub-separator 311 includes a contact portion 314 and a relative portion 315 connected to each other;

[0062] The bottom plate 320 is arranged parallel to the first sub-partition 311 , the contact portion 314 is connected to the bottom plate 320 , the relative portion 315 is parallel to the bottom plate 320 , and the relative portion 315 , the contact portion 314 , the bottom plate 320 and the two side plates 330 together define a fixing groove 30 .

[0063] In this embodiment, if the end of the second sub-separator 312 away from the first sub-separator 321 is directly bent to form a fixing groove 30 parallel to the bottom plate 320, the fixing groove 30 is a through groove, that is, part of the fixing member 220 may touch the battery 40 after entering the fixing groove 30, thereby causing the sealing performance of the sealing member 10 to decrease, and there is a risk of short circuit or water and oxygen contacting the battery to cause leakage. Therefore, the contact portion 314 of this embodiment is directly connected to the bottom plate 320, which serves as the bottom of the fixing groove 30, and the relative portion 315 is parallel to the bottom plate 320, which serves as the side wall of the fixing groove 30. When the fixing member 220 enters the fixing groove 30, the fixing member 220 cannot contact the battery 40.

[0064] In summary, the sealing element 10 of this embodiment has good sealing performance and low leakage risk.

[0065] For further information, please refer to Figure 1 , Figure 2 and Figure 6 , the connecting member 210 includes a first sub-connecting member 211 and a second sub-connecting member 212 connected to each other, and the fixing member 220 includes a first sub-fixing member 221 and a second sub-fixing member 222 connected to each other;

[0066] The first sub-connector 211 is provided with a through hole 330, an acute angle or a right angle is formed between the first sub-connector 211 and the second sub-connector 212, an acute angle or a right angle is formed between the first sub-fixing member 221 and the second sub-fixing member 222, the second sub-connector 212 is connected to the first sub-fixing member 221, and the second sub-fixing member 222 is located in the fixing groove 30 and has a gap with the inner wall of the fixing groove 30.

[0067] In this embodiment, in one aspect, the connecting member 210 and the fixing member 220 are connected by the second sub-connecting member 212 and the first sub-fixing member 221, and an acute angle or a right angle is formed between the first sub-connecting member 211 and the second sub-connecting member 212, and an acute angle or a right angle is formed between the first sub-fixing member 221 and the second sub-fixing member 222, so the second sub-fixing member 222 and the first sub-connecting member 211 are almost parallel, and the first sub-connecting member 211 will only receive the obstruction force formed by the cooperation of the second sub-fixing member 222 and the fixing groove 30 when moving forward, and the first sub-connecting member 211 only needs to disassemble the output pole when moving forward. Therefore, the structure of the second sub-fixing member 222 and the first sub-connecting member 211 in this embodiment can limit the rotation and movement of the output pole in directions other than the disassembly direction, thereby making the output pole easy to disassemble and the structure of the sealing member 10 stable.

[0068] On the other hand, the second sub-connector 212 and the first sub-fixing member 221 can adjust the area of ​​the interconnected portion, for example, by being relatively close to or far away from each other in the up and down directions, so as to adjust the position of the second sub-fixing member 222 in the fixing groove 30 and the size of the gap between the second sub-fixing member 222 and the inner wall of the fixing groove 30, thereby providing a certain elastic deformation space for the output pole to avoid its excessive rigidity and breakage or direct bending during installation or use.

[0069] For further information, please refer to Figure 1 and Figure 2 , Figure 6 The sealing cover 100 is provided with a first limiting protrusion 110 and a second limiting protrusion 120 at two opposite ends thereof;

[0070] A first limiting groove 313 is disposed at one end of the partition 310 away from the bottom plate 320 , and a second limiting groove 321 is disposed on the bottom plate 320 . The first limiting protrusion 110 is clamped in the first limiting groove 313 , and the second limiting protrusion 120 is clamped in the second limiting groove 321 .

[0071] In this embodiment, the clamping connection between the first limiting protrusion 110, the second limiting protrusion 120 and the first limiting groove 313, the second limiting groove 321 can make the sealing cover 100 and the main body 300 tightly connected, thereby preventing the sealing cover 100 from slipping off.

[0072] For further information, please refer to Figures 1 to 3 , Figure 6 The first limiting protrusion 110 is an elastic member, and the first limiting protrusion 110 includes a first bending portion 121, a second bending portion 122, a third bending portion 123 and a protruding portion 124 connected in sequence, the first bending portion 121 is connected to the sealing cover 100, and a deformation gap (not marked in the figure) is formed between the first bending portion 121, the second bending portion 122 and the third bending portion 123;

[0073] The protrusion 124 is connected to a side of the third bending portion 123 away from the first bending portion 121 , and the protrusion 124 is located in the first limiting groove 313 ; or,

[0074] The second limiting protrusion 120 is an elastic member, and the second limiting protrusion 120 includes a first bending portion 121, a second bending portion 122, a third bending portion 123 and a protruding portion 124 connected in sequence, the first bending portion 121 is connected to the sealing cover 100, and a deformation gap is formed between the first bending portion 121, the second bending portion 122 and the third bending portion 123;

[0075] The protruding portion 124 is connected to a side of the third bending portion 123 away from the first bending portion 121 , and the protruding portion 124 is located in the second limiting groove 321 .

[0076] In this embodiment, please refer to Figure 1 , taking the second limiting protrusion 120 as an elastic member as an example, in one aspect, the first limiting protrusion 110 can be directly inserted into the first limiting groove 313 by moving the sealing cover 100 in the front-back direction, but in the process of moving the sealing cover 100 in the front-back direction, the second limiting protrusion 120 will hit the edge of the bottom plate 320. If the second limiting protrusion 120 is a rigid structure, the second limiting protrusion 120 will bend, deform or break, thereby affecting the structural stability of the sealing member 10. Therefore, the second limiting protrusion 120 of this embodiment is an elastic member to avoid bending or breaking, and smoothly enters the second limiting groove 321 through elastic deformation and then restores its original shape.

[0077] On the other hand, a deformation gap is formed among the first bending portion 121, the second bending portion 122, and the third bending portion 123. Therefore, when the sealing cover 100 moves in the front-to-back direction until the first limiting protrusion 110 is inserted into the first limiting groove 313, the third bending portion 123 can be deformed and bend toward the first bending portion 121. That is, the deformation gap provides space for the third bending portion 123 to deform and avoid the bottom plate 320, thereby improving the assembly efficiency of the seal 10 and avoiding deformation and failure of the sealing cover 100.

[0078] Similarly, when the first limiting protrusion 110 is an elastic member, the sealing cover 100 is installed along the up and down direction. At this time, the sealing cover 100 can still be prevented from deforming and failing, and the assembly efficiency of the sealing member 10 can be improved.

[0079] For further information, please refer to Figures 1 to 3 , Figure 6 A first guide curved surface is disposed at the connection between the third bending portion 123 and the second bending portion 122, and the first guide curved surface faces the direction of the main body 300; and / or,

[0080] A second guiding curved surface is disposed at one end of the protruding portion 124 away from the third bending portion 123 , and the second guiding curved surface faces the direction of the main body 300 .

[0081] In this embodiment, the first guide curved surface can prevent the main body 300 and the sealing cover 100 from being damaged by excessive force when the sealing cover 100 moves toward the main body 300, and guide the third bent portion 123 and the main body 300 to be misaligned, so as to achieve mutual avoidance between the sealing cover 100 and the main body 300. Figure 6 When the protrusion 124 is inserted into the first limiting groove 313 or the second limiting groove 321, it will also contact the main body 300 and bend to avoid it. Therefore, the second guide curved surface can guide the protrusion 124 and the main body 300 to avoid each other, thereby preventing the protrusion 124 from being damaged by collision.

[0082] Correspondingly, the present application also provides a battery module, which includes a plurality of batteries 40 and a plurality of seals 10 according to the above-mentioned embodiments, and the seals 10 and the batteries 40 are connected one by one.

[0083] In this embodiment, the seal 10 is sleeved on the battery 40 through the first accommodating cavity 20 and the through hole 330, and the sealing of the pole 41 is achieved through the sealing cover 100. At the same time, the seal 10 limits the rotation and movement of the output pole through the cooperation of the fixing member 220 and the fixing groove 30, so that when the battery module is produced, there is no need to worry about the output pole causing the pole 41 to break during subsequent processing, which also effectively improves the stability of the battery module and increases the service life of the battery module.

[0084] Furthermore, the battery module also includes a confluence piece (not shown in the figure), both ends of which are respectively inserted into the seals 10 provided on adjacent batteries 40 and are in contact with the output pole. At this time, the cooperation between the confluence piece and the seal 10 can realize the series or parallel connection of the batteries 40 in the battery module.

[0085] Correspondingly, the present application also provides an electrical device, which includes the battery module in the above embodiment.

[0086] Because the seal 10 is sleeved on the battery 40 through the first accommodating cavity 20 and the through hole 330, and the sealing of the pole 41 is achieved through the sealing cover 100, and at the same time, the seal 10 limits the rotation and movement of the output pole through the cooperation of the fixing member 220 and the fixing groove 30, so that when the electrical device is produced, there is no need to worry about the output pole causing the pole 41 to break during subsequent processing, which also effectively improves the stability of the electrical device and increases the service life of the electrical device.

[0087] It is understandable that electrical devices include but are not limited to electric vehicles, charging piles, solar power generation equipment, wind power generation equipment, emergency lighting devices, etc.

[0088] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A seal (10) for sealing a pole (41) of a battery (40), characterized in that: The sealing member (10) comprises: A main body (300), the main body (300) being provided with a first accommodating cavity (20), a second accommodating cavity, a fixing groove (30) and a through hole (330), the through hole (330) being connected with the first accommodating cavity (20) and the second accommodating cavity, the fixing groove (30) being located in the second accommodating cavity, the first accommodating cavity (20) being used for accommodating the battery (40), and the through hole (330) being used for accommodating the pole (41); an output pole, the output pole being located in the second accommodating cavity, and comprising a connecting piece (210) and a fixing piece (220) connected to each other, the connecting piece (210) being used to be connected to the pole (41), and at least a portion of the fixing piece (220) being located in the fixing groove (30) and being used to cooperate with the fixing groove (30) to limit the movement and rotation of the connecting piece (210); A sealing cover (100), wherein the sealing cover (100) is used to seal the second accommodating cavity.

2. The seal (10) according to claim 1, characterized in that The main body (300) comprises a partition (320), a bottom plate (400) and two side plates (310) arranged opposite to each other, wherein the bottom plate (400) and the partition (320) are both located between the two side plates (310), and the partition (320), the bottom plate (400) and the two side plates (310) define a first accommodating cavity (20) and a second accommodating cavity, and the first accommodating cavity (20) and the second accommodating cavity are respectively located on two opposite sides of the partition (320); One end of the partition (320) is provided with a through hole (330), and the other end and the bottom plate (400) define a fixing groove (30).

3. The seal (10) according to claim 2, characterized in that The separator (320) comprises a first sub-separator (321) and a second sub-separator (322) connected to each other, and the first sub-separator (321) and the second sub-separator (322) are bent to form an acute angle or a right angle; The through hole (330) is provided in the first sub-partition (321), and one end of the second sub-partition (322) away from the first sub-partition (321) and the bottom plate (400) define a fixing groove (30).

4. The seal (10) according to claim 3, characterized in that One end of the second sub-separator (322) away from the first sub-separator (321) comprises a contact portion (324) and a relative portion (325) connected to each other; The bottom plate (400) is arranged parallel to the first sub-dividing member (321), the contact portion (324) is connected to the bottom plate (400), the relative portion (325) is parallel to the bottom plate (400), and the relative portion (325), the contact portion (324), the bottom plate (400) and the two side plates (310) together define a fixing groove (30).

5. The seal (10) according to claim 3, characterized in that The connecting member (210) comprises a first sub-connecting member (211) and a second sub-connecting member (212) connected to each other, and the fixing member (220) comprises a first sub-fixing member (221) and a second sub-fixing member (222) connected to each other; The first sub-connecting member (211) is provided with a through hole (330), an acute angle or a right angle is formed between the first sub-connecting member (211) and the second sub-connecting member (212), an acute angle or a right angle is formed between the first sub-fixing member (221) and the second sub-fixing member (222), the second sub-connecting member (212) and the first sub-fixing member (221) are connected, and the second sub-fixing member (222) is located in the fixing groove (30) and has a gap with the inner wall of the fixing groove (30).

6. The seal (10) according to claim 2, characterized in that The sealing cover (100) is provided with a first limiting protrusion (110) and a second limiting protrusion (120) at two opposite ends thereof; A first limiting groove (323) is provided at one end of the partition (320) away from the bottom plate (400), and a second limiting groove (410) is provided on the bottom plate (400); the first limiting protrusion (110) is clamped in the first limiting groove (323), and the second limiting protrusion (120) is clamped in the second limiting groove (410).

7. The seal (10) according to claim 6, characterized in that The first limiting protrusion (110) is an elastic member, and the first limiting protrusion (110) comprises a first bending portion (121), a second bending portion (122), a third bending portion (123) and a protruding portion (124) which are connected in sequence, the first bending portion (121) is connected to the sealing cover (100), and a deformation gap is formed between the first bending portion (121), the second bending portion (122) and the third bending portion (123); The protruding portion (124) is connected to a side of the third bending portion (123) away from the first bending portion (121), and the protruding portion (124) is located in the first limiting groove (323); or, The second limiting protrusion (120) is an elastic member, and the second limiting protrusion (120) comprises a first bending portion (121), a second bending portion (122), a third bending portion (123) and a protruding portion (124) which are connected in sequence, the first bending portion (121) is connected to the sealing cover (100), and a deformation gap is formed between the first bending portion (121), the second bending portion (122) and the third bending portion (123); The protruding portion (124) is connected to a side of the third bending portion (123) away from the first bending portion (121), and the protruding portion (124) is located in the second limiting groove (410).

8. The seal (10) according to claim 7, characterized in that A first guide curved surface is provided at the connection between the third bending portion (123) and the second bending portion (122), and the first guide curved surface faces the direction of the main body (300); and / or, A second guide curved surface is provided at one end of the protruding portion (124) away from the third bent portion (123), and the second guide curved surface faces the direction where the main body (300) is located.

9. A battery module, characterized in that: The battery module comprises a plurality of batteries (40) and a plurality of seals (10) according to any one of claims 1 to 8, wherein the seals (10) and the batteries (40) are connected in a one-to-one correspondence.

10. An electrical device, characterized in that: The electrical device comprises the battery module as claimed in claim 9.

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