Pole assembly, battery, battery module, battery pack and power supply equipment

Abstract

The utility model discloses a pole assembly, a battery, a battery module, a battery pack and power supply equipment. The pole assembly comprises a pole and a moving part, when the moving part is located at the rising position, the first end face of the pole assembly protrudes out of the outer surface of the battery in the first direction. When the moving part is located at the descending position, the first end face of the pole assembly in the first direction is not higher than the outer surface of the battery. According to the pole assembly disclosed by the utility model, the pole assembly can protrude out of the outer surface of the battery according to use requirements, so that the normal use of the battery is facilitated; or the pole assembly is retracted into the battery to prevent the pole assembly from colliding with surrounding parts in the production, assembly and transportation processes, so that the influence on the use of the battery due to the looseness and even damage of the pole assembly can be avoided, electrolyte leakage can be avoided, the service life of the battery is prolonged, the volume of the battery is reduced, and the outer surface of the battery is flat; and the battery is convenient to stack.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a pole assembly, a battery, a battery module, a battery pack and a power supply device. Background Art

[0002] In the related technologies, how to make the battery meet the needs of external power supply, hide the poles on the battery to reduce the space occupied by multiple batteries, facilitate stacking of multiple batteries on the surface of the battery cover, and avoid collision of poles during production, assembly and transportation, causing loosening or even damage of the poles, and avoid safety hazards such as battery leakage, are technical problems that need to be solved urgently. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the utility model is to provide a pole assembly for a battery, which can make the pole protrude from the outer surface of the battery according to the use needs, which is beneficial to the normal use of the battery; or the pole assembly can be retracted into the battery, which reduces the volume of the battery, and the outer surface of the battery is flat, which is convenient for stacking batteries.

[0004] The second object of the utility model is to provide a battery using the above-mentioned electrode assembly for a battery.

[0005] The third object of the present invention is to provide a battery module using the above-mentioned battery.

[0006] The fourth objective of the present invention is to provide a battery pack using the above-mentioned battery or battery module.

[0007] The fifth objective of the present utility model is to provide a power supply device using the above-mentioned battery pack.

[0008] According to the first aspect of the utility model, a pole assembly for a battery includes: a pole; a moving part, which is connected to the pole and can be switched between a raised position and a lowered position; wherein a side surface of the pole assembly away from the center of the battery in a first direction is a first end face, and when the moving part is in the raised position, the first end face of the pole assembly in the first direction protrudes from the outer surface of the battery; when the moving part is in the lowered position, the first end face of the pole assembly in the first direction is not higher than the outer surface of the battery.

[0009] According to the pole assembly for the battery of the embodiment of the utility model, the moving part can be switched between the rising position and the falling position. When the moving part is in the falling position, the first end face of the pole assembly is not higher than the outer surface of the battery in the first direction. Thus, the pole can be protruded from the outer surface of the battery according to the use needs, which is beneficial to the normal use of the battery; or the pole assembly can be retracted into the battery to avoid the pole assembly from colliding with surrounding parts during production, assembly and transportation, thereby preventing the pole assembly from loosening or even being damaged to affect the use of the battery, and avoiding electrolyte leakage, extending the service life of the battery, reducing the volume of the battery, and the outer surface of the battery is flat, which is convenient for stacking batteries.

[0010] According to some embodiments of the present invention, the moving part includes at least one of a soft part and a conductive part.

[0011] According to some embodiments of the present invention, it is characterized in that the moving part includes the soft part, which is suitable for driving the pole to move relative to the outer surface of the battery in the first direction.

[0012] According to some embodiments of the present invention, a through hole is formed on the soft component, and the pole is located in the through hole.

[0013] According to some embodiments of the present utility model, the soft part includes a first connecting segment and a second connecting segment connected to each other, the first connecting segment extends along the second direction, the second connecting segment extends along the first direction, the first connecting segment is connected to the pole, and the second direction intersects with the first direction.

[0014] According to some embodiments of the present invention, the soft component further includes a third connecting segment, the third connecting segment extends along the second direction, and the third connecting segment and the first connecting segment are respectively located on both sides of the second connecting segment in the second direction.

[0015] According to some embodiments of the present invention, the soft part includes at least one of a rubber part and a soft metal part.

[0016] According to some embodiments of the present invention, the moving part includes the conductive part, and the pole is movably connected to the conductive part.

[0017] According to some embodiments of the present invention, the pole is threadedly connected to the conductive member.

[0018] According to some embodiments of the utility model, one of the pole and the conductive member is provided with an external thread, the other of the pole and the conductive member is formed with an internal thread, and a conductive retaining member is provided in a thread gap of at least one of the internal thread and the external thread.

[0019] According to some embodiments of the present invention, the conductive retaining member is at least one of copper foil, tin foil, gold foil, aluminum foil and silver foil.

[0020] According to some embodiments of the utility model, the pole assembly for the battery also includes an elastic limiter, which is sleeved on the outer periphery of the pole, and when the conductive part is in the ascending position, the elastic limiter abuts against the conductive part; when the conductive part is in the descending position, the conductive part compresses the elastic limiter.

[0021] According to some embodiments of the utility model, the pole assembly for the battery also includes a snap-on limiter, one end of which is connected to one end of the conductive member in the first direction, and the other end of which fits within the threaded gap in the first direction.

[0022] According to some embodiments of the present invention, the pole includes a body; a boss, wherein the boss is arranged on the outer peripheral surface of the body and extends along the circumference of the body, and the boss is located at one axial end of the body.

[0023] According to some embodiments of the present invention, a sealing member is provided on the outer peripheral surface of the boss.

[0024] According to some embodiments of the present invention, the seal comprises a first sealing segment and a second sealing segment connected to each other, and on a projection surface of the seal in the first direction, a cross-sectional area of ​​the first sealing segment is greater than a cross-sectional area of ​​the second sealing segment.

[0025] According to the battery of the embodiment of the second aspect of the utility model, the cover plate includes a mounting position; a pole assembly, the pole assembly is arranged at the mounting position, and the pole assembly is a pole assembly for a battery according to any one of claims 1 to 4; wherein, the two side surfaces of the mounting position in the first direction are respectively a first surface and a second surface, and a portion of the second surface is recessed toward the direction of the first surface to form an avoidance gap, and the avoidance gap is located at the outer periphery of the pole.

[0026] According to some embodiments of the present invention, the height of the conductive member is H1, the minimum distance between the side of the conductive member away from the first surface and the avoidance gap is H2, and H1 and H2 satisfy: H2-H1>1mm.

[0027] According to some embodiments of the present invention, the depth of the matching groove of the conductive member is H3, wherein H2 and H3 satisfy: 20%≤H3 / H2≤80%.

[0028] According to some embodiments of the utility model, the minimum distance between the side surface of the conductive part adjacent to the boss and the first sealing section is H4, and the distance between the side surface of the pole away from the conductive part and the second surface is H5, and H4 and H5 respectively satisfy: H4>0.01mm, H5>0.5mm.

[0029] A battery module according to an embodiment of the third aspect of the utility model includes a battery according to an embodiment of the second aspect of the utility model.

[0030] The battery pack according to the fourth aspect of the present invention comprises the battery according to the second aspect of the present invention or the battery module according to the third aspect of the present invention.

[0031] The power supply device according to the fifth aspect of the utility model includes the battery pack according to the fourth aspect of the utility model.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 is a schematic diagram of a battery according to an embodiment of the utility model, wherein some components are not shown;

[0035] Figure 2 is a schematic diagram of a battery according to an embodiment of the utility model from another angle;

[0036] Figure 3 is a schematic diagram of a soft part of a battery in an ascending position according to an embodiment of the utility model;

[0037] Figure 4 is along Figure 3 Sectional view along line AA;

[0038] Figure 5 yes Figure 4 The enlarged view of the A part shown in the middle circle;

[0039] Figure 6 is a schematic diagram of a conductive member of a battery in an ascending position according to an embodiment of the utility model;

[0040] Figure 7 yes Figure 6 The enlarged view of the part B shown in the middle circle;

[0041] Figure 8 is a schematic diagram of a moving part of a battery in a descending position according to an embodiment of the utility model;

[0042] Fig. 9 yes Figure 8 The enlarged view of the C part circled in the middle;

[0043] Fig.10 is a schematic diagram of a pole assembly according to an embodiment of the utility model;

[0044] Fig.11 It is a schematic diagram of a pole assembly according to another embodiment of the utility model.

[0045] Reference numerals:

[0046] 100: Pole assembly;

[0047] 1: pole; 11: body; 12: boss; 2: soft part; 21: through hole; 211: first hole section; 212: second hole section; 22: first connecting section; 23: second connecting section; 24: third connecting section; 3: conductive part; 31: matching groove; 4: elastic limiter; 5: buckle limiter; 51: card seat; 52: card key; 53: extension column; 6: sealing part; 61: first sealing section; 62: second sealing section; 7: second end face;

[0048] 200: Battery;

[0049] 201: cover plate; 2011: mounting position; 2012: first surface; 2013: second surface; 2014: avoidance gap. DETAILED DESCRIPTION

[0050] Reference below Figure 1-Figure 11 The following describes a terminal assembly 100 for a battery 200 according to an embodiment of the first aspect of the present utility model.

[0051] like Figure 1-Figure 11 As shown, the pole assembly 100 for a battery 200 according to the first embodiment of the utility model comprises a pole 1 and a moving part.

[0052] Specifically, the moving part is connected to the pole 1, and the moving part can be switched between the rising position and the falling position. In the first direction, the surface of the pole assembly 100 away from the battery 200 is the first end surface. When the moving part is in the rising position, in the first direction (for example, Figure 4 The first end surface of the upper pole assembly 100 protrudes from the outer surface of the battery 200 (in the up-down direction); when the moving part is in the descending position, the first end surface of the pole assembly 100 is not higher than the outer surface of the battery 200 in the first direction. It should be noted that the first direction can be the up-down direction, the left-right direction, or the front-back direction. No specific limitation is made here.

[0053] For example, in Figure 1-Figure 11 In the example, the battery 200 includes a cover plate 201, the pole assembly 100 is arranged in the middle of the cover plate 201, and the pole 1 and the moving part are arranged coaxially, and one end of the pole 1 is electrically connected to the battery cell of the battery 200 to meet the power supply demand of the battery 200. Figure 4 and Figure 5 When the moving part is in the raised position, the first end surface of the pole assembly 100 protrudes from the surface of the cover plate 201 (ie, the upper surface of the battery 200 ). At this time, the pole assembly 100 can be electrically connected to an external conductor to facilitate the normal use of the battery 200 .

[0054] Reference Figure 6 and Figure 7 When the moving part is in the descending position, the first end face of the pole assembly 100 is flush with the upper surface of the battery 200 in the first direction, or the first end face of the pole assembly 100 is lower than the upper surface of the battery 200, that is, the pole assembly 100 can be completely retracted into the cover plate 201 of the battery 200, avoiding collision between the pole assembly 100 and surrounding components during production, assembly and transportation, thereby preventing the pole assembly 100 (the pole 1 and the moving part) from loosening or even being damaged to affect the use of the battery 200, and avoiding leakage of electrolyte, thereby extending the service life of the battery 200. At the same time, when the pole 1 and the moving part are retracted into the battery 200, the volume of the battery 200 is reduced, and the upper surface of the battery 200 is flat, which is convenient for stacking the battery 200.

[0055] Optionally, the shape of the surface of one side of the pole 1 away from the center of the battery cell may be circular or polygonal, but is not limited thereto.

[0056] According to the pole assembly 100 for the battery 200 of the embodiment of the utility model, the moving part can be switched between the rising position and the falling position. When the moving part is in the falling position, the first end face of the pole assembly 100 in the first direction is not higher than the outer surface of the battery 200. Thus, the pole assembly 100 can be made to protrude from the outer surface of the battery 200 according to the use needs, which is beneficial to the normal use of the battery 200; or the pole assembly 100 can be retracted into the battery 200 to avoid the pole assembly 100 from colliding with surrounding components during production, assembly and transportation, thereby preventing the pole assembly 100 from loosening or even being damaged to affect the use of the battery 200, and avoiding electrolyte leakage, extending the service life of the battery 200, reducing the volume of the battery 200, and the outer surface of the battery 200 is flat, which is convenient for stacking the battery 200.

[0057] According to some embodiments of the present invention, the moving part includes at least one of the soft part 2 and the conductive part 3. That is, the moving part includes only the soft part 2 (not shown), and the deformation of the soft part 2 is used to realize the switching between the rising position and the falling position; or the moving part includes only the conductive part 3 (such as Figure 4 and Figure 5 As shown), the switching between the rising position and the falling position is realized only by the movement of the conductive member 3; or the moving member includes the soft member 2 and the conductive member 3 (as shown Figure 6 and Figure 7 As shown), the soft part 2 is used for large stroke adjustment, and the conductive part 3 is used for small stroke adjustment to improve the efficiency and accuracy of the switching of the moving part between the rising position and the falling position.

[0058] According to some embodiments of the present invention, Figure 4 and Figure 5 As shown, the moving part includes a soft part 2, and the soft part 2 is suitable for driving the pole 1 to move relative to the outer surface of the battery 200 in the first direction. Among them, the side surface of the pole 1 away from the battery 200 in the first direction is the first end surface, and the side surface of the soft part 2 away from the center of the battery 200 in the first direction is the second end surface 7. When the soft part 2 is in the ascending position, the second end surface 7 of the soft part 2 in the first direction protrudes from the outer surface of the battery 200. In other words, when the soft part 2 is in the ascending position, the soft part 2 is roughly in a convex shape, and one end of the soft part 2 protruding from the outer surface of the battery 200 can be electrically connected to an external conductor to facilitate the normal use of the battery 200.

[0059] When the soft component 2 is in the descending position, the second end surface 7 of the soft component 2 is not higher than the outer surface of the battery 200 in the first direction. In other words, the second end surface 7 of the soft component 2 is flush with the outer surface of the battery 200, or the second end surface 7 of the soft component 2 is lower than the outer surface of the battery 200. At this time, the soft component 2 is in a concave shape, and the soft component 2 is retracted into the battery 200. In this way, the safety of the soft component 2 is further ensured, and the collision between the soft component 2 and surrounding components during production, assembly and transportation is avoided.

[0060] Furthermore, a through hole 21 is formed on the soft part 2, and the pole 1 is located in the through hole 21. That is to say, the pole 1 can move with the soft part 2. When the soft part 2 is in the ascending position, the pole 1 protrudes from the soft part 2, and one end of the pole 1 protruding from the soft part 2 can be electrically connected to an external conductor to facilitate the normal use of the battery 200. When the soft part 2 is in the descending position, the pole 1 retracts into the soft part 2. In this way, the safety of the pole 1 is ensured, and the pole 1 is prevented from colliding with surrounding components during production, assembly and transportation, thereby preventing the pole 1 from loosening or even being damaged to affect the use of the battery 200, and preventing electrolyte leakage, thereby extending the service life of the battery 200.

[0061] In addition, when gas appears in the battery cell electrically connected to the pole 1 due to improper use, the soft part 2 expands to move away from the battery 200, which helps to reduce the gas pressure inside the battery 200 and reduce the risk of explosion of the battery 200, thereby improving the operating stability and safety of the battery 200.

[0062] Further, refer to Figure 4-Figure 7 The soft part 2 includes a first connecting section 22 and a second connecting section 23 connected to each other. The first connecting section 22 is along the second direction (for example, Figure 4 The second connecting section 23 extends along the first direction, the first connecting section 22 is connected to the pole 1, and the second direction is perpendicular to the first direction. Figure 5 , the second connecting section 23 can be connected to the upper surface of the battery 200. When the moving part is in the ascending position, the first connecting section 22 and the second connecting section 23 both protrude from the upper surface of the battery 200, so that the pole 1 connected to the soft part 2 protrudes from the upper surface of the battery 200. At this time, the end of the pole 1 away from the upper surface of the battery 200 can be electrically connected to an external conductor, so as to facilitate the normal use of the battery 200. When the moving part is in the descending position, the first connecting section 22 and the second connecting section 23 are both lower than the upper surface of the battery 200, so that the pole 1 connected to the soft part 2 is not higher than the upper surface of the battery 200, so as to protect the pole 1 and facilitate the stacking of the battery 200.

[0063] Furthermore, the soft part 2 further includes a third connecting segment 24, the third connecting segment 24 extends along the second direction, and the third connecting segment 24 and the first connecting segment 22 are respectively located on both sides of the second connecting segment 23 in the second direction. In other words, along the direction away from the center of the soft part 2, the cross-section of the soft part 2 is roughly Z-shaped, and the third connecting segment 24 can be connected to the upper surface of the battery 200 to increase the connection stability of the third connecting segment 24 on the upper surface of the battery 200.

[0064] Optionally, the soft part 2 includes at least one of a rubber part and a soft metal part. The rubber part has good elasticity, wear resistance and aging resistance; the soft metal part has good ductility and excellent conductivity. Using at least one of the rubber part and the soft metal part as the soft part 2 facilitates the deformation of the soft part 2 to drive the pole 1 to move relative to the outer surface of the battery 200 in the first direction.

[0065] According to other embodiments of the present invention, the moving part includes a conductive member 3, and the pole 1 is movably connected to the conductive member 3. Thus, while ensuring the connection stability between the pole 1 and the conductive member 3, the moving direction of the conductive member 3 relative to the pole 1 is limited, thereby improving the stability and reliability of the conductive member 3 switching between the raised position and the lowered position.

[0066] The side surface of the conductive member 3 away from the battery 200 in the first direction is the first end surface. When the conductive member 3 is in the ascending position, the first end surface of the conductive member 3 in the first direction protrudes from the outer surface of the battery 200; when the conductive member 3 is in the descending position, the first end surface of the conductive member 3 in the first direction is not higher than the outer surface of the battery 200.

[0067] In some optional embodiments, the pole 1 and the conductive member 3 are threadedly connected. For example, by screwing the conductive member 3, when the conductive member 3 rotates clockwise around the central axis of the pole 1, the distance between the side surface of the conductive member 3 away from the battery 200 and the upper surface of the battery 200 gradually increases, and the conductive member 3 gradually switches from the lowered position to the raised position, that is, the conductive member 3 gradually protrudes from the upper surface of the battery 200, so that the length of the conductive member 3 protruding from the upper surface of the battery 200 is suitable for the use requirements of the battery 200. By screwing the conductive member 3, when the conductive member 3 rotates counterclockwise around the central axis of the pole 1, the distance between the side surface of the conductive member 3 away from the battery 200 and the upper surface of the battery 200 gradually decreases, and the conductive member 3 gradually switches from the raised position to the lowered position, that is, the conductive member 3 is completely retracted into the battery 200, thereby avoiding damage to the pole 1 during production, assembly and transportation, and also reducing the risk of leakage, short circuit, etc. of the battery 200 due to damage to the pole 1, thereby extending the service life of the battery 200.

[0068] Further, one of the pole 1 and the conductive member 3 is provided with an external thread, and the other of the pole 1 and the conductive member 3 is formed with an internal thread. For example, the pole 1 is provided with an external thread, and the conductive member 3 is formed with an internal thread (such as Figure 4-Figure 11 Alternatively, the conductive member 3 is provided with an external thread, and the pole 1 is formed with an internal thread (not shown).

[0069] A conductive retainer is provided in the thread gap of at least one of the internal thread and the external thread. The external thread of the pole 1 and the internal thread of the conductive member 3 cooperate to realize the rotation of the conductive member 3 on the pole 1. Among them, the conductive retainer can be provided only in the thread gap of the internal thread; or, the conductive retainer can be provided only in the thread gap of the external thread; or, the conductive retainer can be provided in the thread gap of both the external thread and the internal thread. The conductive retainer has good conductivity. While ensuring the stability of the electrical connection between the pole 1 and the conductive member 3, the conductive retainer also helps to increase the friction between the internal thread and the external thread, so that the conductive member 3 can be stably fixed at any height position of the pole 1, thereby improving the stability and reliability of the connection between the conductive member 3 and the pole 1, and improving the applicability of the battery 200.

[0070] Optionally, the conductive retainer can be at least one of copper foil, tin foil, gold foil, aluminum foil and silver foil. Among them, copper foil has good conductivity and is also conducive to eliminating static electricity; tin foil has the advantages of easy conductivity and good ductility; gold foil has the advantages of stable properties, anti-oxidation, moisture resistance and corrosion resistance; aluminum foil is soft and easy to deform; silver foil has the advantages of good ductility, good conductivity and good thermal conductivity. Therefore, using at least one of copper foil, tin foil, gold foil, aluminum foil and silver foil as a conductive retainer is conducive to improving the stability of the conductive retainer in the thread gap of the internal thread or the external thread. Optionally, the conductive retainer can also be other soft conductive objects.

[0071] In some optional embodiments, referring to Figure 8 The pole assembly 100 for the battery 200 further includes an elastic stopper 4, which is sleeved on the outer periphery of the pole 1. When the conductive member 3 is in the ascending position, the elastic stopper 4 abuts against the conductive member 3; when the conductive member 3 is in the descending position, the conductive member 3 compresses the elastic stopper 4. The elastic stopper 4 has good anti-loosening and anti-vibration performance.

[0072] Specifically, the conductive member 3 gradually switches from the descending position to the ascending position, that is, the conductive member 3 gradually protrudes from the upper surface of the battery 200, and the restoring force of the elastic stopper 4 pushes the conductive member 3 upward, so that the elastic stopper 4 stops against the conductive member 3, so as to limit the conductive member 3 from moving toward the upper surface of the battery 200, and prevent the conductive member 3 from falling, thereby increasing the stability of the conductive member 3 at any position of the pole 1 and improving the reliability of the normal use of the battery 200. The conductive member 3 gradually switches from the ascending position to the descending position, and the conductive member 3 compresses the elastic stopper 4 to deform it, so that the conductive member 3 can be completely retracted into the battery 200.

[0073] In some other optional embodiments, refer to Fig. 9 The pole assembly 100 for the battery 200 also includes a snap-on limiter 5, one end of which is connected to one end of the conductive member 3 in the first direction, and the other end of the snap-on limiter 5 fits in the thread gap in the first direction. Specifically, the snap-on limiter 5 includes a socket 51 and a key 52, the socket 51 is connected to the conductive member 3, and the key 52 is suitable for fitting in the thread gap. In the process of the conductive member 3 switching between the rising position and the falling position, the socket 51 moves with the conductive member 3 so that the key 52 fits in the thread gap, so as to limit the movement of the conductive member 3 and the pole 1 in the first direction, thereby increasing the stability of the conductive member 3 at any position of the pole 1.

[0074] Optionally, the buckle stopper 5 further includes an extension column 53, which extends along the first direction, one end of which is connected to the holder 51, and the other end of which is connected to the key 52. ​​This arrangement is suitable for the use of the pole 1 with a longer length.

[0075] According to some embodiments of the present invention, referring to Figure 5 and Figure 7 The pole 1 includes a body 11 and a boss 12, the boss 12 is arranged on the outer peripheral surface of the body 11, and the boss 12 extends along the circumference of the body 11, and the boss 12 is located at one end of the axial direction of the body 11. Such an arrangement increases the connection area between the pole 1 and the battery 200, thereby improving the installation stability of the pole 1 on the battery 200.

[0076] Furthermore, a seal 6 is provided on the outer circumference of the boss 12. The seal 6 is annular to fill the gap between the boss 12 and the battery 200, improve the sealing between the boss 12 and the battery 200, and reduce the risk of electrolyte leakage on the outer circumference of the boss 12.

[0077] Furthermore, the seal 6 includes a first sealing segment 61 and a second sealing segment 62 connected to each other, and the cross-sectional area of ​​the first sealing segment 61 on the projection surface of the seal 6 in the first direction is greater than the cross-sectional area of ​​the second sealing segment 62. In other words, the cross-sectional shape of the seal 6 on the projection surface in the first direction is substantially T-shaped, so as to increase the sealing performance of the seal 6.

[0078] Among them, refer to Figure 5 and Figure 7 The through hole 21 on the soft part 2 includes a first hole section 211 and a second hole section 212 that are connected to each other. The first hole section 211 is connected to the side of the second hole section 212 adjacent to the conductive part 3, and the aperture of the first hole section 211 is larger than the aperture of the second hole section 212. The first sealing section 61 is located in the first hole section 211, and the second sealing section 62 is located in the second hole section 212. In other words, the cross-section of the through hole 21 along the first direction is roughly T-shaped. The first sealing section 61 fills the gap between the inner wall of the first hole section 211 and the outer peripheral surface of the boss 12, and the second sealing section 62 fills the gap between the inner wall of the second hole section 212 and the outer peripheral surface of the boss 12, so as to increase the connection area between the seal 6 and the through hole 21, thereby improving the installation stability of the seal 6 in the through hole 21, and further improving the sealing performance of the seal 6.

[0079] The battery 200 according to the embodiment of the second aspect of the utility model comprises a cover plate 201 and a pole assembly 100. The cover plate 201 has a mounting position 2011, and the pole assembly 100 is arranged at the mounting position 2011. The pole assembly 100 is a pole assembly 100 for the battery 200 according to the embodiment of the first aspect of the utility model. The two side surfaces of the bottom wall of the mounting position 2011 in the first direction are respectively a first surface 2012 and a second surface 2013, and a part of the second surface 2013 is recessed toward the direction of the first surface 2012 to form an avoidance gap 2014, and the avoidance gap 2014 is located at the periphery of the pole 1.

[0080] For example, in Figure 1-Figure 7 In the example, the pole assembly 100 is coaxially arranged in the installation position 2011 to avoid interference between the pole assembly 100 and the inner wall of the installation position 2011, increase the smoothness of the pole assembly 100 switching between the rising position and the lowering position, thereby improving the user experience. One end of the pole 1 extends out of the first surface 2012 for connecting with the conductive member 3, and the other end of the pole 1 extends out of the second surface 2013 for electrically connecting to the battery cell. The avoidance notch 2014 is formed on the second surface 2013, which is conducive to avoiding other components such as the battery cell, thereby avoiding interference with other components such as the battery cell, thereby improving the installation stability of the battery 200.

[0081] According to the pole assembly 100 for the battery 200 of the embodiment of the utility model, when the conductive member 3 is in the ascending position, the conductive member 3 protrudes from the surface of the cover plate 201, so as to facilitate the normal use of the battery 200; when the conductive member 3 is in the descending position, the conductive member 3 can be completely retracted into the installation position 2011, so as to avoid the conductive member 3 from colliding with surrounding components during production, assembly and transportation, thereby preventing the pole 1 (the conductive member 3 and the pole 1) from loosening or even being damaged to affect the use of the battery 200, and preventing electrolyte leakage, thereby extending the service life of the battery 200. At the same time, when the conductive member 3 is retracted into the installation position 2011, the volume of the pole assembly 100 is reduced, and the surface of the cover plate 201 is flat, so that the batteries 200 can be stacked on the surface of the cover plate 201.

[0082] According to some embodiments of the present invention, referring to Figure 7, the height of the conductive member 3 is H1, the minimum distance between the side of the conductive member 3 away from the first surface 2012 and the avoidance gap 2014 is H2, and H1 and H2 satisfy: H2-H1>1mm. H2-H1 represents the minimum distance between the second surface 2013 where the avoidance gap 2014 is located and the side surface of the conductive member 3 facing the first surface 2012 when the conductive member 3 is fully retracted in the mounting position 2011, that is, the difference between H2-H1 is roughly the thickness of the bottom wall of the mounting position 2011. When H2-H1<1mm, the thickness of the bottom wall of the mounting position 2011 is small, which reduces the structural strength of the cover plate 201, and thus the service life of the pole assembly 100 is short. Therefore, by setting H2-H1>1mm, the thickness of the bottom wall of the mounting position 2011 is increased, thereby improving the structural strength of the cover plate 201 and extending the service life of the pole assembly 100.

[0083] According to some embodiments of the present invention, referring to Figure 7 The depth of the matching groove 31 of the conductive member 3 is H3, wherein H2 and H3 satisfy: 20%≤H3 / H2≤80%. When H3 / H2 is less than 20%, the ratio of the depth of the matching groove 31 to the minimum distance between the side of the conductive member 3 away from the first surface 2012 and the avoidance gap 2014 is small, that is, the depth of the matching groove 31 is small, resulting in a shorter moving path of the conductive member 3, so that the adjustable range of the length of the conductive member 3 protruding from the surface of the cover plate 201 is small, which is not conducive to the connection between the conductive member 3 and other components, and reduces the applicability of the battery 200; when H3 / H2 is greater than 80%, the ratio of the depth of the matching groove 31 to the minimum distance between the side of the conductive member 3 away from the first surface 2012 and the avoidance gap 2014 is large, that is, the depth of the matching groove 31 is large, resulting in a longer moving path of the conductive member 3, so that the adjustable range of the length of the conductive member 3 protruding from the surface of the cover plate 201 is large, when the protruding length of the conductive member 3 relative to the surface of the cover plate 201 is long, the conductive member 3 is prone to collision, and the connection stability between the conductive member 3 and the pole 1 is reduced, thereby reducing the service life of the battery 200.

[0084] Therefore, by setting the ratio of the depth of the matching groove 31 and the minimum distance between the side of the conductive part 3 away from the first surface 2012 and the avoidance gap 2014 to 20%≤H3 / H2≤80%, the depth design of the matching groove 31 is more reasonable, the moving path design of the conductive part 3 is more reasonable, and the adjustable range of the length of the conductive part 3 protruding from the surface of the cover plate 201 is more reasonable, which is beneficial to the connection between the conductive part 3 and the remaining components, improves the applicability of the battery 200, and at the same time avoids damage to the conductive part 3, increases the connection stability between the conductive part 3 and the pole 1, and extends the service life of the pole assembly 100, thereby improving the market competitiveness of the pole assembly 100.

[0085] According to some embodiments of the present invention, referring to Figure 7 The minimum distance between the side surface of the conductive member 3 adjacent to the boss 12 and the first sealing section 61 is H4, and the distance between the side surface of the pole 1 away from the conductive member 3 and the second surface 2013 is H5. H4 and H5 respectively satisfy: H4>0.01mm, H5>0.5mm.

[0086] When H4 is less than 0.01 mm, the minimum distance between the side surface of the conductive member 3 adjacent to the boss 12 and the first sealing section 61 is small, and the temperature of the battery 200 after use is increased, which easily causes the first sealing section 61 to expand, so that the first sealing section 61 will squeeze the conductive member 3, reducing the stability of the conductive member 3 in the installation position 2011. Therefore, by setting the minimum distance between the side surface of the conductive member 3 adjacent to the boss 12 and the first sealing section 61 to H4>0.01 mm, the spacing between the side surface of the conductive member 3 adjacent to the boss 12 and the first sealing section 61 is designed to be more reasonable, so that the first sealing section 61 is suitable for filling the above spacing after expansion, and the first sealing section 61 is prevented from squeezing the conductive member 3 after expansion, thereby ensuring the stability of the conductive member 3 in the installation position 2011.

[0087] When H5 is less than 0.5 mm, the distance between the side surface of the pole 1 away from the conductive member 3 and the second surface 2013 is also small, that is, the length of the pole 1 protruding from the bottom wall of the installation position 2011 is short, which is not conducive to the electrical connection between the pole 1 and the battery cell, thereby reducing the connection stability and operation stability of the battery 200. Therefore, by setting the distance between the side surface of the pole 1 away from the conductive member 3 and the second surface 2013 to H5>0.5 mm, the length of the pole 1 protruding from the bottom wall of the installation position 2011 is more reasonably designed, ensuring the electrical connection between the pole 1 and the battery cell, thereby improving the installation stability and operation stability of the battery 200.

[0088] Optionally, an explosion-proof valve is also provided on the cover plate 201, and the explosion-proof valve can also be designed to be flat, that is, the surface of the explosion-proof valve is flush with the surface of the cover plate 201 or the explosion-proof valve is retracted into the cover plate 201 to reduce the volume of the pole assembly 100, thereby increasing the applicability of the battery 200.

[0089] Optionally, a liquid injection hole is formed on the cover plate 201 , and the liquid injection hole is separated from the mounting position 2011 . The liquid injection hole is a built-in design, which is beneficial to improving the energy density of the battery 200 .

[0090] According to the battery 200 of the embodiment of the utility model, by adopting the above-mentioned pole assembly 100 for the battery 200, the stability of stacking and transportation of the battery 200 is improved, which is beneficial to improving the service life of the battery 200, thereby improving the market competitiveness of the battery 200.

[0091] A battery module (not shown) according to an embodiment of the third aspect of the utility model comprises a battery 200 according to an embodiment of the second aspect of the utility model.

[0092] The battery module according to the embodiment of the present invention adopts the above-mentioned battery 200, which is beneficial to prolonging the service life of the battery module and improving the market competitiveness of the battery module.

[0093] The battery pack (not shown) according to the fourth aspect of the present invention comprises the battery 200 according to the second aspect of the present invention or the battery module according to the third aspect of the present invention.

[0094] According to the battery pack of the embodiment of the present invention, by adopting the above-mentioned battery 200 or battery module, it is beneficial to extend the service life of the battery pack, improve the operating stability of the battery pack, and thus improve the market competitiveness of the battery pack.

[0095] The power supply device (not shown) according to the fifth embodiment of the utility model includes the battery pack according to the fourth embodiment of the utility model. It should be noted that the power supply device can be a vehicle, an aircraft, a ship, an electronic product or an energy storage cabinet. No specific limitation is made here.

[0096] The power supply device according to the embodiment of the utility model, by adopting the above-mentioned battery pack, is conducive to improving the operating stability of the power supply device, thereby improving the market competitiveness of the power supply device.

[0097] Other structures and operations of the pole assembly 100, the battery 200, the battery module, the battery pack and the power supply device according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0098] In the description of the present invention, it should be understood that the terms "center", "length", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are 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 device or element referred to 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.

[0099] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0101] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pole assembly (100) for a battery (200), It is characterized in that include: Pole (1); A moving part, the moving part is connected to the pole (1), and the moving part can be switched between an ascending position and a descending position; Wherein, a side surface of the pole assembly (100) away from the center of the battery (200) in the first direction is a first end surface, and when the moving part is in the ascending position, the first end surface of the pole assembly (100) in the first direction protrudes from the outer surface of the battery (200); when the moving part is in the descending position, the first end surface of the pole assembly (100) in the first direction is not higher than the outer surface of the battery (200).

2. The electrode assembly (100) for a battery (200) according to claim 1, It is characterized in that The moving part comprises at least one of a soft part (2) and a conductive part (3).

3. The electrode assembly (100) for a battery (200) according to claim 2, It is characterized in that The moving part comprises a soft part (2), and the soft part (2) is suitable for driving the pole (1) to move relative to the outer surface of the battery (200) in the first direction.

4. The electrode assembly (100) for a battery (200) according to claim 3, It is characterized in that A through hole (21) is formed on the soft component (2), and the pole (1) is located in the through hole (21).

5. The electrode assembly (100) for a battery (200) according to claim 3, It is characterized in that The soft component (2) comprises a first connecting section (22) and a second connecting section (23) connected to each other, the first connecting section (22) extending along a second direction, the second connecting section (23) extending along the first direction, the first connecting section (22) being connected to the pole (1), and the second direction intersecting with the first direction.

6. The electrode assembly (100) for a battery (200) according to claim 5, It is characterized in that The soft component (2) further includes: A third connecting section (24), the third connecting section (24) extending along the second direction, the third connecting section (24) and the first connecting section (22) being respectively located on both sides of the second connecting section (23) in the second direction.

7. The electrode assembly (100) for a battery (200) according to claim 3, It is characterized in that The soft part (2) comprises at least one of a rubber part and a soft metal part.

8. The electrode assembly (100) for a battery (200) according to claim 2, It is characterized in that The moving part comprises a conductive part (3), and the pole (1) is movably connected to the conductive part (3).

9. The electrode assembly (100) for a battery (200) according to claim 2, It is characterized in that The pole (1) is threadedly connected to the conductive member (3).

10. The electrode assembly (100) for a battery (200) according to claim 9, It is characterized in that One of the pole (1) and the conductive member (3) is provided with an external thread, the other of the pole (1) and the conductive member (3) is formed with an internal thread, and a conductive retaining member is provided in a thread gap of at least one of the internal thread and the external thread.

11. The electrode assembly (100) for a battery (200) according to claim 10, It is characterized in that The conductive retaining member is at least one of copper foil, tin foil, gold foil, aluminum foil and silver foil.

12. The electrode assembly (100) for a battery (200) according to claim 9, It is characterized in that Also includes: An elastic limiting member (4), wherein the elastic limiting member (4) is sleeved on the outer circumference of the pole (1), When the conductive member (3) is located at the ascending position, the elastic limiting member (4) abuts against the conductive member (3); when the conductive member (3) is located at the descending position, the conductive member (3) compresses the elastic limiting member (4).

13. The electrode assembly (100) for a battery (200) according to claim 9, It is characterized in that Also includes: A buckle limiter (5), one end of which is connected to one end of the conductive member (3) in the first direction, and the other end of which is fitted in the thread gap in the first direction.

14. The electrode assembly (100) for a battery (200) according to any one of claims 1 to 13, It is characterized in that The pole (1) comprises: Ontology(11); A boss (12), wherein the boss (12) is arranged on the outer peripheral surface of the body (11), and the boss (12) extends along the circumferential direction of the body (11), and the boss (12) is located at one axial end of the body (11).

15. The electrode assembly (100) for a battery (200) according to claim 14, It is characterized in that A sealing member (6) is provided on the outer peripheral surface of the boss (12).

16. The electrode assembly (100) for a battery (200) according to claim 15, It is characterized in that The sealing member (6) comprises a first sealing segment (61) and a second sealing segment (62) connected to each other; on a projection surface of the sealing member (6) in the first direction, the cross-sectional area of ​​the first sealing segment (61) is greater than the cross-sectional area of ​​the second sealing segment (62).

17. A battery (200), It is characterized in that include: A cover plate (201), wherein the cover plate (201) has a mounting position (2011); A pole assembly (100), the pole assembly (100) being arranged at the mounting position (2011), the pole assembly (100) being a pole assembly (100) for a battery (200) according to any one of claims 1 to 16; Wherein, the two side surfaces of the mounting position (2011) in the first direction are respectively a first surface (2012) and a second surface (2013), and a portion of the second surface (2013) is recessed in the direction of the first surface (2012) to form an avoidance gap (2014), and the avoidance gap (2014) is located on the periphery of the pole (1).

18. The battery (200) according to claim 17, It is characterized in that The height of the conductive member (3) is H 1 The minimum distance between the side of the conductive member (3) away from the first surface (2012) and the avoidance gap (2014) is H 2 , the H 1 , the H 2 Satisfaction: H 2 -H 1 >1mm.

19. The battery (200) according to claim 18, It is characterized in that The depth of the matching groove (31) of the conductive member (3) is H 3 , wherein the H 2 , H 3 Satisfaction: 20% ≤ H 3 / H 2 ≤80%.

20. The battery (200) according to claim 17, It is characterized in that The minimum distance between a side surface of the conductive member (3) adjacent to the boss (12) and the first sealing section (61) is H 4 The distance between the surface of the pole (1) on one side away from the conductive member (3) and the second surface (2013) is H 5 , the H 4 , the H 5 Satisfy: H 4 >0.01mm, H 5 >0.5mm.

21. A battery module, It is characterized in that Comprising a battery (200) according to any one of claims 17-20.

22. A battery pack, It is characterized in that Comprising the battery (200) according to any one of claims 13 to 20 or the battery module according to claim 20.

23. A power supply device, It is characterized in that Comprising a battery pack according to claim 22.

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