Output pole assembly, output pole module and battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to an output pole assembly, an output pole module and a battery pack. The output pole assembly comprises a first electric connecting piece, a second electric connecting piece and a fixing assembly, one end of the first electric connecting piece is used for being electrically connected with a pole, one end of the second electric connecting piece is electrically connected with the end, away from the pole, of the first electric connecting piece, and the fixing assembly comprises a fixing plate and a fixing base. And the fixed seat is movably connected with the fixed plate. The ends, connected with each other, of the first electric connecting piece and the second electric connecting piece are jointly and movably connected with the fixing base. The output pole module comprises the output pole assembly. The battery pack comprises the output pole module. The output pole assembly is of a flexible connection structure, the installation matching flexibility of the output pole module applying the output pole assembly and the battery pack can be improved, and the use safety of the output pole module and the battery pack is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an output electrode assembly, an output electrode module, and a battery pack. Background Technology

[0002] A power battery pack or energy storage battery pack is generally composed of multiple output terminal modules connected in series and parallel. These output terminal modules are electrically connected using electrical connectors such as copper or aluminum conductors. Specifically, the electrical connectors are connected to the terminals of the cells that make up the output terminal modules. Generally, the electrical connectors need to be supported by fixing components to prevent them from deforming under vibration or impact, which could affect the safety of the output terminal modules.

[0003] Currently, electrical connectors and mounting components are generally connected in a fixed manner. However, in actual production in a market-oriented environment, it is sometimes necessary to use battery cells from different manufacturers for matching. These different manufacturers' battery cells have variations in thickness and terminal position, resulting in differences in dimensional and tolerance ranges. When these dimensional or tolerance differences are significant, it can lead to mismatches in the output module, making installation impossible. Furthermore, mounting components typically have lifting points for hoisting and moving the output module. If the electrical connectors and mounting components are fixedly connected, some stress will be transferred to the electrical connectors during the hoisting process, potentially causing warping and deformation. This leads to increased resistance, excessive localized temperature rise, and compromises the safety of the output module. Utility Model Content

[0004] The main purpose of this utility model is to propose an output electrode assembly, an output electrode module, and a battery pack, which aims to solve the technical problems of the output electrode module being difficult to match and install due to the fixed connection between existing electrical connectors and fixing components, and the safety of use being easily affected when hoisting the output electrode module.

[0005] To achieve the above objectives, this utility model proposes an output electrode assembly for connecting the terminals of a battery cell, the output electrode assembly comprising:

[0006] A first electrical connector, one end of which is used for electrical connection to the pole post;

[0007] A second electrical connector, one end of which is electrically connected to the end of the first electrical connector that is away from the pole post;

[0008] A fixing component, the fixing component including a fixing plate and a fixing base, the fixing base being movably connected to the fixing plate;

[0009] The first electrical connector and the second electrical connector are connected at one end to each other and are movably connected to the fixed base.

[0010] In some embodiments, the first electrical connector has a first connection hole at one end near the fixed base, the second electrical connector has a second connection hole at one end near the fixed base, the fixed base has a third connection hole at the end near which the first electrical connector and the second electrical connector are connected to each other, a connector is disposed in the third connection hole, the connector has a fourth connection hole, and fasteners are passed through the first connection hole, the second connection hole and the fourth connection hole, the fasteners being used to connect the first electrical connector, the second electrical connector and the connector;

[0011] The connector and the third connecting hole are clearance-fitted.

[0012] In some embodiments, the third connecting hole includes a first hole segment and a second hole segment that are interconnected along a first direction, wherein the diameter of the first hole segment is larger than the diameter of the second hole segment; the connector includes a first connecting segment and a second connecting segment that are interconnected along the first direction, wherein the first connecting segment is placed inside the first hole segment and the first connecting segment and the first hole segment are clearance-fitted, and the second connecting segment is placed inside the second hole segment and the second connecting segment and the second hole segment are clearance-fitted.

[0013] Along a second direction perpendicular to the first direction, the maximum distance from one end of the first connecting segment to the opposite end is greater than the aperture of the second hole segment.

[0014] In some embodiments, the inner sidewall of the second hole segment is provided with a first sliding portion, and the outer sidewall of the second connecting segment is provided with a second sliding portion, the second sliding portion cooperating with the first sliding portion;

[0015] The second sliding part is configured to slide within the first sliding part.

[0016] In some embodiments, a clearance groove is provided on the side of the first hole segment opposite to the second hole segment, and one end of the fastener can be inserted into the clearance groove.

[0017] In some embodiments, the fixing base is provided with a first insertion part at one end near the fixing plate, and the fixing plate is provided with a second insertion part at one end near the fixing base, with the second insertion part and the first insertion part being clearance-fitted.

[0018] In some embodiments, a sealing plate is provided at the second insertion part, the sealing plate is provided with a first positioning hole, and the fixing plate is provided with a second positioning hole at the second insertion part. A positioning member is provided in the first positioning hole and the second positioning hole, and the positioning member is used to connect the sealing plate to the fixing plate.

[0019] The sealing plate is used to seal the first plug portion inside the second plug portion.

[0020] In some embodiments, the distance L between the outer side wall of the first insertion part and the inner side wall of the second insertion part satisfies: 1mm≤L≤2mm.

[0021] In some embodiments, the fixing base is a structure made of plastic, and the fixing base is provided with reinforcing ribs protruding circumferentially.

[0022] Correspondingly, this utility model also proposes an output pole module, comprising:

[0023] The output pole component described in any of the above embodiments;

[0024] Multiple battery cells, each of which is provided with a terminal, and the multiple battery cells are connected in series or in parallel through the terminals;

[0025] Among them, some of the terminals and the output terminal assembly of the multiple battery cells are connected.

[0026] Correspondingly, this utility model also proposes a battery pack, comprising:

[0027] The output module described in the above embodiments;

[0028] The housing has a receiving cavity, and the output electrode module is disposed within the receiving cavity;

[0029] A terminal block, one end of which extends into the interior of the housing, and the other end of which extends out of the housing. The end of the terminal block extending into the housing is electrically connected to the second electrical connector in the output module.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] In the technical solution of this utility model, the fixed base can provide effective support and limit for the first electrical connector and the second electrical connector. When the output electrode assembly is subjected to vibration or impact force, the first electrical connector and the second electrical connector can move within a small range relative to the fixed base in the X, Y and Z directions, thus ensuring the structural stability of the first electrical connector and the second electrical connector.

[0032] When matching and installing the output electrode module, since the connection between the fixed base and the fixed plate, as well as between the first electrical connector, the second electrical connector and the fixed base, are all movable connections in the output electrode assembly provided by this utility model, when there are certain dimensional differences and tolerance range differences in the thickness of the battery cell or the position of the electrode post, the first electrical connector, the second electrical connector and the fixed base, as well as the fixed base and the fixed plate, can be adaptively adjusted. This helps to improve the installation and matching flexibility of the output electrode module, reduce or eliminate the adverse effects on the installation and matching of the output electrode module caused by the existence of installation errors, and avoid warping and deformation of the first electrical connector and the second electrical connector when the output electrode module is forcibly installed (if the first electrical connector and the second electrical connector are warped and deformed, the resistance of the first electrical connector and the second electrical connector will increase, which can easily cause excessive local temperature rise), thereby ensuring the structural stability and safety of the output electrode module.

[0033] When the output electrode module is hoisted and moved, an external force (e.g., hoisting force) is applied to the output electrode module, specifically to the fixed components in the output electrode assembly. This can easily cause localized stress at the fixed components. Because the fixed base and fixed plate, as well as the first and second electrical connectors and the fixed base, are all movable connections in the output electrode assembly provided by this invention, there is a high degree of freedom between the fixed base and fixed plate, and between the first and second electrical connectors and the fixed base. This allows for adaptive adjustment of their positions according to the applied force, thereby eliminating the adverse effects of localized stress on the first and second electrical connectors and preventing warping or deformation of the first and second electrical connectors. This ensures the structural stability and operational safety of the output electrode module.

[0034] The use of the above-mentioned output pole components in the output pole module can improve the installation and matching flexibility of the output pole module, reduce the installation and matching difficulty of the output pole module, and ensure the structural stability of the output pole module during hoisting.

[0035] The battery pack using the above-mentioned output terminal module can ensure safe use. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the overall structure of the output electrode assembly provided in an embodiment of the present invention;

[0038] Figure 2 An exploded view of the overall structure of the output electrode assembly provided in an embodiment of this utility model;

[0039] Figure 3 This is a cross-sectional view of the overall structure of the output electrode assembly provided in an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the overall structure of the fixing base in the output electrode assembly provided in an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of the overall structure of the connector in the output electrode assembly provided in an embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of the internal structure of the output pole module provided in an embodiment of the present invention;

[0043] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.

[0044] Explanation of icon numbers:

[0045] 10. Output electrode assembly;

[0046] 100. First electrical connector;

[0047] 110. First connecting hole;

[0048] 200. Second electrical connection;

[0049] 210. Second connecting hole;

[0050] 300. Fixed components;

[0051] 310. Fixing plate; 320. Fixing base; 330. Connecting piece;

[0052] 311. Second insertion part; 312. Second positioning hole;

[0053] 321. Third connecting hole; 322. First insertion part; 323. Reinforcing rib;

[0054] 331. Fourth connecting hole; 332. First connecting section; 333. Second connecting section;

[0055] 3211, First borehole section; 3212, Second borehole section;

[0056] 3331. Second sliding part;

[0057] 32111, clearance groove;

[0058] 32121, First sliding part;

[0059] 400. Fasteners;

[0060] 500, sealing plate;

[0061] 510, First positioning hole; 520, Movable slot;

[0062] 600. Positioning components;

[0063] 700, battery cell;

[0064] 710. Pole column;

[0065] 800, casing;

[0066] 900, terminal block;

[0067] X, first direction;

[0068] Y, the second direction.

[0069] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0070] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0071] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0072] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0073] A power battery pack or energy storage battery pack is generally composed of multiple output terminal modules connected in series and parallel. These output terminal modules are electrically connected using electrical connectors such as copper or aluminum conductors. Specifically, the electrical connectors are connected to the terminals of the cells that make up the output terminal modules. Generally, the electrical connectors need to be supported by fixing components to prevent them from deforming under vibration or impact, which could affect the safety of the output terminal modules.

[0074] Currently, electrical connectors and mounting components are generally connected in a fixed manner. However, in actual production in a market-oriented environment, it is sometimes necessary to use battery cells from different manufacturers for matching. These different manufacturers' battery cells have variations in thickness and terminal position, resulting in differences in dimensional and tolerance ranges. When these dimensional or tolerance differences are significant, it can lead to mismatches in the output module, making installation impossible. Furthermore, mounting components typically have lifting points for hoisting and moving the output module. If the electrical connectors and mounting components are fixedly connected, some stress will be transferred to the electrical connectors during the hoisting process, potentially causing warping and deformation. This leads to increased resistance, excessive localized temperature rise, and compromises the safety of the output module.

[0075] Based on this, in order to solve the technical problems of difficulty in matching and installing the output pole module due to the fixed connection between the existing electrical connector 330 and the fixing component 300, and the potential impact on safety during the hoisting of the output pole module, refer to Figures 1 to 5This utility model provides an output electrode assembly 10 for connecting the terminal post 710 of a battery cell 700. The output electrode assembly 10 includes a first electrical connector 100, a second electrical connector 200, and a fixing assembly 300. The first electrical connector 100 and the second electrical connector 200 can be copper conductors or aluminum conductors. One end of the first electrical connector 100 is used to electrically connect to the terminal post 710 of the battery cell 700, and one end of the second electrical connector 200 is electrically connected to the end of the first electrical connector 100 opposite to the terminal post 710. The first electrical connector 100 and the second electrical connector 200 can be used to transmit current and realize current conduction. The fixing assembly 300 includes a fixing plate 310 and a fixing seat 320, and the fixing seat 320 is movably connected to the fixing plate 310. In other words, when the fixing component 300 is subjected to force, relative movement can occur between the fixing seat 320 and the fixing plate 310 to reduce or eliminate the local stress generated in the fixing component 300 after being subjected to force. This allows the fixing component 300 to automatically make adaptive adjustments after being subjected to force, reducing the adverse effects of impact on the fixing component 300. The fixing plate 310 can be the end plate of the output electrode module, and a lifting point can be provided on the fixing plate 310 to facilitate the lifting and movement of the output electrode module. For example, the lifting point can be a lifting lug or a hook. The ends of the first electrical connector 100 and the second electrical connector 200 connected to each other are movably connected to the fixing seat 320. In other words, when the fixing seat 320 is subjected to force, relative movement can occur between the first electrical connector 100, the second electrical connector 200 and the fixing seat 320 to improve the connection flexibility between the first electrical connector 100, the second electrical connector 200 and the fixing seat 320.

[0076] Specifically, in this embodiment, the fixing base 320 can provide effective support and limit for the first electrical connector 100 and the second electrical connector 200. When the output electrode assembly 10 is subjected to vibration or impact, the first electrical connector 100 and the second electrical connector 200 can move within a small range relative to the fixing base 320 in the X, Y and Z directions, ensuring the structural stability of the first electrical connector 100 and the second electrical connector 200.

[0077] When matching and installing the output electrode module, since the connection between the fixing base 320 and the fixing plate 310, as well as the connection between the first electrical connector 100, the second electrical connector 200 and the fixing base 320, are all movable, when there are certain dimensional differences and tolerance range differences in the thickness of the battery cell 700 or the position of the electrode post 710, adaptive adjustments can be made between the first electrical connector 100, the second electrical connector 200 and the fixing base 320, and between the fixing base 320 and the fixing plate 310. This improves the installation and matching flexibility of the output module, reduces or eliminates the adverse effects of installation errors on the installation and matching of the output module, and avoids warping and deformation of the first electrical connector 100 and the second electrical connector 200 when the output module is forcibly installed (if the first electrical connector 100 and the second electrical connector 200 warp and deform, the resistance of the first electrical connector 100 and the second electrical connector 200 will increase, which can easily cause excessive local temperature rise), thereby ensuring the structural stability and safety of the output module.

[0078] When the output electrode module is hoisted and moved, an external force (e.g., hoisting force) is applied to the output electrode module, specifically to the fixing component 300 in the output electrode assembly 10. This can easily cause local stress at the fixing component 300. Since the fixing base 320 and fixing plate 310, as well as the first electrical connector 100, the second electrical connector 200, and the fixing base 320 in the output electrode assembly 10 provided in this embodiment are all movable connections, there is a high degree of freedom between the fixing base 320 and fixing plate 310, and between the first electrical connector 100, the second electrical connector 200, and the fixing base 320. This allows for adaptive adjustment of position according to the applied force, thereby eliminating the adverse effects of local stress on the first electrical connector 100 and the second electrical connector 200, preventing warping and deformation of the first electrical connector 100 and the second electrical connector 200, and ensuring the structural stability and safety of the output electrode module.

[0079] In some embodiments, refer to Figures 2 to 5The first electrical connector 100 has a first connecting hole 110 at one end near the fixed base 320, and the second electrical connector 200 has a second connecting hole 210 at one end near the fixed base 320. The fixed base 320 has a third connecting hole 321 at the end where the first electrical connector 100 and the second electrical connector 200 are connected to each other. A connector 330 is disposed in the third connecting hole 321, and the connector 330 has a fourth connecting hole 331. Fasteners 400 are inserted into the first connecting hole 110, the second connecting hole 210, and the fourth connecting hole 331, and are used to connect the first electrical connector 100, the second electrical connector 200, and the connector 330. For example, the first connecting hole 110 and the second connecting hole 210 can be through holes, and the fourth connecting hole 331 can be provided with internal threads. In this case, the fastener 400 can be a bolt. The bolt shank can pass sequentially through the first connecting hole 110, the second connecting hole 210, and the fourth connecting hole 331. Tightening the bolt allows for a secure connection between the first electrical connector 100, the second electrical connector 200, and the connector 330. Through the connector 330, the ends of the first electrical connector 100 and the second electrical connector 200 are movably connected to the fixed base 320. Therefore, the alignment of the first connecting hole 110, the second connecting hole 210, and the fourth connecting hole 331 can be adaptively adjusted to facilitate the connection of the first electrical connector 100, the second electrical connector 200, and the connector 330 using bolts.

[0080] In some embodiments, refer to Figures 2 to 5This invention provides a structural form that enables "one end of the first electrical connector 100 and the second electrical connector 200 to be movably connected to the fixed base 320". For example, the third connecting hole 321 includes a first hole segment 3211 and a second hole segment 3212 that are interconnected along the first direction X. The diameter of the first hole segment 3211 is larger than the diameter of the second hole segment 3212, that is, the third connecting hole 321 can be a T-shaped hole. Correspondingly, the connector 330 can be a T-shaped floating nut. The connector 330 includes a first connecting segment 332 and a second connecting segment 333 that are interconnected along the first direction X. The first connecting segment 332 is placed inside the first hole segment 3211, and the first connecting segment 332 and the first hole segment 3211 are clearance-fitted. The second connecting segment 333 is placed inside the second hole segment 3212, and the second connecting segment 333 and the second hole segment 3212 are clearance-fitted. That is, a clearance tolerance is reserved between the connector 330 and the third connecting hole 321, allowing the connector 330 to move within the third connecting hole 321, thus realizing the movable connection between the first electrical connector 100, the second electrical connector 200, and the fixed base 320. Along the second direction Y, perpendicular to the first direction X, the maximum distance from one end of the first connecting segment 332 to the opposite end is greater than the diameter of the second hole segment 3212. In other words, with the above structure, it is possible to ensure that the connector 330 can move up and down within the third connecting hole 321 along the first direction X, and also to limit the connector 330 within the third connecting hole 321, preventing the connector 330 from slipping out of the third connecting hole 321 through the second connecting segment 333. Preferably, the range of up and down movement of the connector 330 within the third connecting hole 321 along the first direction X can be between 1mm and 2mm (inclusive).

[0081] Specifically, in this embodiment, by adopting the above structure, on the one hand, when installing the matching output electrode module, the connector 330 can float up and down a certain distance within the third connection hole 321 along the first direction X, thereby adaptively adjusting the relative positions between the first electrical connector 100, the second electrical connector 200, and the fixing base 320. This allows the output electrode module to be compatible with battery cells 700 of different thicknesses produced by different manufacturers, as well as battery cells 700 with different height pole posts 710 produced by different manufacturers, reducing the difficulty of matching and installing the output electrode module and improving the flexibility of matching and installing the output electrode module. On the other hand, when the output electrode assembly 10 is subjected to an impact force, the connector 330 can move within the third connection hole 321 based on its original position, thereby allowing the connector 330 to absorb part of the impact force and reduce or eliminate the adverse effects of the impact force on the first electrical connector 100 and the second electrical connector 200.

[0082] In some embodiments, refer to Figure 4 and Figure 5The inner wall of the second hole section 3212 is provided with a first sliding part 32121, and the outer wall of the second connecting section 333 is provided with a second sliding part 3331. The second sliding part 3331 and the first sliding part 32121 cooperate with each other. The second sliding part 3331 is configured to slide within the first sliding part 32121.

[0083] Specifically, in this embodiment, the first sliding part 32121 can be a slot, and the second sliding part 3331 can be a buckle; alternatively, the first sliding part 32121 can be a buckle, and the second sliding part 3331 can be a slot. When the connector 330 moves along the first direction X within the third connecting hole 321, the first sliding part 32121, in conjunction with the second sliding part 3331, can guide the connector 330, effectively preventing the connector 330 from shifting during movement. If the connector 330 shifts during movement, it may cause the first electrical connector 100 and the second electrical connector 200 to bend, affecting the safety performance of the first electrical connector 100 and the second electrical connector 200.

[0084] The first sliding part 32121 or the second sliding part 3331 can have a certain elastic deformation capability. For example, the material of the first sliding part 32121 or the second sliding part 3331 can be plastic. When the connector 330 is pushed into the third connecting hole 321, and when the first sliding part 32121 and the second sliding part 3331 come into contact, the first sliding part 32121 or the second sliding part 3331 can undergo elastic deformation, thereby facilitating the locking between the first sliding part 32121 and the second sliding part 3331 and ensuring a tight fit between the first sliding part 32121 and the second sliding part 3331.

[0085] In some embodiments, refer to Figure 3 and Figure 4 The first hole segment 3211 has a relief groove 32111 on the side opposite to the second hole segment 3212. The relief groove 32111 can extend from one end of the first hole segment 3211 to the opposite end of the first hole segment 3211. One end of the fastener 400 can be inserted into the relief groove 32111.

[0086] Specifically, in this embodiment, when the selected fastener 400 is long enough, that is, when the length of the fastener 400 after tightening exceeds the height of the connector 330, the excess part of the fastener 400 can be inserted into the relief groove 32111, thereby preventing the excess part of the fastener 400 from piercing the fixing seat 320 and ensuring the structural stability of the fixing seat 320.

[0087] Furthermore, the clearance groove 32111 can be elongated to facilitate the movement of the fastener 400 within the clearance groove 32111. This allows the connector 330 to still move within the third connection hole 321 even after the output electrode assembly 10 is subjected to force. This prevents the movement of the connector 330 within the third connection hole 321 from being restricted due to the fastener 400 being inserted into the clearance groove 32111, thereby facilitating the movable connection between the first electrical connector 100, the second electrical connector 200, and the fixed base 320.

[0088] In some embodiments, refer to Figures 1 to 4 The fixing base 320 has a first insertion part 322 at one end near the fixing plate 310, and the fixing plate 310 has a second insertion part 311 at one end near the fixing base 320. The second insertion part 311 and the first insertion part 322 are fitted with a clearance. That is, a clearance tolerance is reserved between the second insertion part 311 and the first insertion part 322 along the first direction X and the second direction Y, so that the first insertion part 322 and the second insertion part 311 can move relative to each other, realizing the movable connection between the fixing base 320 and the fixing plate 310.

[0089] Specifically, in this embodiment, the first plug-in portion 322 can be a plug-in component, and the second plug-in portion 311 can be a plug-in slot. Alternatively, the first plug-in portion 322 can be a plug-in slot, and the second plug-in portion 311 can be a plug-in component. When installing and matching the output electrode module, the first plug-in portion 322 and the second plug-in portion 311 can move relative to each other along the first direction X, thereby absorbing the dimensional tolerances caused by the difference in thickness of the battery cell 700 in the installation height direction. The first plug-in portion 322 and the second plug-in portion 311 can also move relative to each other along the second direction Y, thereby absorbing the dimensional tolerances caused by the difference in position of the terminal post 710 of the battery cell 700 in the installation plane direction, thereby reducing the difficulty of installing and matching the output electrode module and improving the flexibility of installing and matching the output electrode module.

[0090] After the output electrode assembly 10 is subjected to force, the first plug-in portion 322 and the second plug-in portion 311 can move relative to each other along the first direction X, thereby absorbing the impact force on the output electrode assembly 10 in the first direction X. The first plug-in portion 322 and the second plug-in portion 311 can also move relative to each other along the second direction Y, thereby absorbing the impact force on the output electrode assembly 10 in the second direction Y. This achieves the purpose of ensuring the structural stability of the first electrical connector 100 and the second electrical connector 200 and preventing the first electrical connector 100 and the second electrical connector 200 from warping and deforming after being subjected to impact force.

[0091] In some embodiments, refer to Figure 1 and Figure 2A sealing plate 500 is provided at the second insertion part 311, and the sealing plate 500 is provided with a first positioning hole 510. A fixing plate 310 is provided with a second positioning hole 312 at the second insertion part 311. A positioning element 600 passes through the first positioning hole 510 and the second positioning hole 312, and the positioning element 600 is used to connect the sealing plate 500 to the fixing plate 310. The first positioning hole 510 and the second positioning hole 312 may be provided with internal threads, and the positioning element 600 can be a bolt, thereby realizing a threaded connection between the sealing plate 500 and the fixing plate 310, facilitating the installation and disassembly of the sealing plate 500 and the fixing plate 310. The sealing plate 500 is used to seal the first insertion part 322 within the second insertion part 311.

[0092] Specifically, in this embodiment, the sealing plate 500 can limit the first plug-in portion 322 within the second plug-in portion 311, preventing the first plug-in portion 322 from popping out of the second plug-in portion 311 when the first plug-in portion 322 and the second plug-in portion 311 move relative to each other, thus affecting the connection stability between the fixing base 320 and the fixing plate 310 and reducing the working safety of the output pole module.

[0093] Corresponding to the structure of the first plug-in portion 322, the sealing plate 500 may have a movable slot 520. When the first plug-in portion 322 moves relative to the second plug-in portion 311, the first plug-in portion 322 can extend only out of the movable slot 520, preventing the range of motion of the first plug-in portion 322 from being limited by the sealing plate 500. This ensures the connection flexibility between the fixing base 320 and the fixing plate 310, which helps to eliminate dimensional and tolerance differences during the installation and matching of the output pole modules, and also helps to absorb impact forces. Furthermore, under the blocking effect of the non-movable slot 520 portion of the sealing plate 500, the first plug-in portion 322 will not directly detach from the second plug-in portion 311, improving the connection stability between the fixing base 320 and the fixing plate 310.

[0094] In some embodiments, the distance L between the outer sidewall of the first insertion portion 322 and the inner sidewall of the second insertion portion 311 satisfies: 1mm ≤ L ≤ 2mm. That is, the gap tolerance between the first insertion portion 322 and the second insertion portion 311 is between 1mm and 2mm (inclusive). For example, the value of L can be 1mm, 1.3mm, 1.5mm, 1.7mm, 2mm, etc.

[0095] Specifically, in this embodiment, the gap tolerance between the first plug-in portion 322 and the second plug-in portion 311 is set within the aforementioned range (1mm≤L≤2mm). On the one hand, this avoids the gap tolerance between the first plug-in portion 322 and the second plug-in portion 311 being too small (e.g., L<1mm), which would reduce the range of motion of the first plug-in portion 322 relative to the second plug-in portion 311 and decrease the connection flexibility between the fixing base 320 and the fixing plate 310. On the other hand, it also avoids the gap tolerance between the first plug-in portion 322 and the second plug-in portion 311 being too large (e.g., L>2mm), which would result in an overly loose connection structure between the fixing base 320 and the fixing plate 310, making it difficult for the fixing base 320 to provide effective support for the first electrical connector 100 and the second electrical connector 200.

[0096] In some embodiments, refer to Figure 3 and Figure 4 The fixing base 320 is a structure made of plastic, and a reinforcing rib 323 protrudes circumferentially from the fixing base 320. Multiple reinforcing ribs 323 can be stacked along the first direction X.

[0097] Specifically, in this embodiment, as system voltage gradually increases, the requirements for electrical creepage distance (creepage distance refers to the shortest path measured along an insulating surface between two conductive parts or between a conductive part and the protective interface of the equipment) become increasingly stringent. The addition of groove-shaped reinforcing ribs 323 to the outer surface of the mounting base 320 increases the structural complexity of the mounting base 320 and extends the creepage distance path. Under the same creepage distance requirements, the structural design of adding reinforcing ribs 323 helps reduce the overall size of the mounting base 320, preventing it from occupying excessive space within the output module and ensuring the energy density of the output module.

[0098] In addition, by setting reinforcing ribs 323, the structural strength of the fixing seat 320 can be improved.

[0099] Correspondingly, another embodiment of this utility model also provides an output pole module, see reference. Figure 6 and Figure 7 The output electrode module includes the output electrode assembly 10 in any of the above embodiments and a plurality of battery cells 700 (the battery cells 700 can be lithium-ion battery cells 700). Each battery cell 700 is provided with a terminal 710, and the plurality of battery cells 700 are connected in series or in parallel through the terminal 710. Among them, some of the terminal 710s of the plurality of battery cells 700 are connected to the output electrode assembly 10.

[0100] Specifically, in this embodiment, since the output electrode assembly 10 is a movable connection structure with a certain degree of flexibility, the output electrode module provided in this embodiment can be compatible with cells 700 of different thicknesses formed within a certain size difference and tolerance range, as well as cells 700 with pole post 710 deviations within a certain size difference and tolerance range, during installation and matching. This helps to improve the installation and matching flexibility of the output electrode module and reduce the installation and matching difficulty of the output electrode module.

[0101] Correspondingly, another embodiment of the present invention also provides a battery pack, which includes the output electrode module, housing 800 and terminal 900 in the above embodiment. The housing 800 is provided with a receiving cavity, and the output electrode module is disposed in the receiving cavity. The housing 800 can effectively protect the output electrode module and prevent it from being damaged by impact. One end of the terminal 900 extends into the interior of the housing 800, and the other end of the terminal 900 extends out of the exterior of the housing 800. The end of the terminal 900 extending into the interior of the housing 800 is electrically connected to the second electrical connector 200 in the output electrode module.

[0102] Specifically, in this embodiment, the battery pack using the above-mentioned output electrode module can ensure safe use.

[0103] Thanks to the improvements to the output electrode assembly 10 described above, the output electrode module and battery pack of this embodiment have the same technical effects as the output electrode assembly 10 described above, which will not be repeated here.

[0104] It should be noted that other contents of the output electrode assembly 10, output electrode module and battery pack disclosed in this utility model can be found in the prior art, and will not be repeated here.

[0105] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An output electrode assembly, characterized in that, The output electrode assembly includes a terminal for connecting the battery cell, comprising: A first electrical connector, one end of which is used for electrical connection to the pole post; A second electrical connector, one end of which is electrically connected to the end of the first electrical connector that is away from the pole post; A fixing component, comprising a fixing plate and a fixing base, wherein the fixing base is movably connected to the fixing plate; The first electrical connector and the second electrical connector are connected at one end to each other and are movably connected to the fixed base.

2. The output pole assembly according to claim 1, characterized in that, The first electrical connector has a first connection hole at one end near the fixed base, the second electrical connector has a second connection hole at one end near the fixed base, the fixed base has a third connection hole at the end near which the first electrical connector and the second electrical connector are connected to each other, a connector is provided in the third connection hole, the connector has a fourth connection hole, and fasteners are inserted into the first connection hole, the second connection hole and the fourth connection hole, the fasteners are used to connect the first electrical connector, the second electrical connector and the connector; The connector and the third connecting hole are clearance-fitted.

3. The output pole assembly according to claim 2, characterized in that, The third connecting hole includes a first hole segment and a second hole segment that are interconnected along a first direction, wherein the diameter of the first hole segment is larger than the diameter of the second hole segment; the connector includes a first connecting segment and a second connecting segment that are interconnected along the first direction, wherein the first connecting segment is placed inside the first hole segment and the first connecting segment and the first hole segment are in clearance fit, and the second connecting segment is placed inside the second hole segment and the second connecting segment and the second hole segment are in clearance fit. Along a second direction perpendicular to the first direction, the maximum distance from one end of the first connecting segment to the opposite end is greater than the aperture of the second hole segment.

4. The output pole assembly according to claim 3, characterized in that, The inner wall of the second hole section is provided with a first sliding part, and the outer wall of the second connecting section is provided with a second sliding part, the second sliding part and the first sliding part cooperate with each other; The second sliding part is configured to slide within the first sliding part.

5. The output pole assembly according to claim 3, characterized in that, The first hole section has a relief groove on the side opposite to the second hole section, and one end of the fastener can be inserted into the relief groove.

6. The output pole assembly according to claim 1, characterized in that, The fixing base has a first insertion part at one end near the fixing plate, and the fixing plate has a second insertion part at one end near the fixing base. The second insertion part and the first insertion part are fitted with a clearance.

7. The output electrode assembly according to claim 6, characterized in that, A sealing plate is provided at the second insertion part, and the sealing plate is provided with a first positioning hole. The fixing plate is provided with a second positioning hole at the second insertion part. A positioning element is inserted into the first positioning hole and the second positioning hole. The positioning element is used to connect the sealing plate to the fixing plate. The sealing plate is used to seal the first plug portion inside the second plug portion.

8. The output pole assembly according to claim 6, characterized in that, The distance L between the outer side wall of the first insertion part and the inner side wall of the second insertion part satisfies: 1mm≤L≤2mm.

9. The output pole assembly according to any one of claims 1 to 8, characterized in that, The fixing base is a structure made of plastic, and the fixing base is provided with reinforcing ribs protruding in the circumferential direction.

10. An output pole module, characterized in that, include: The output pole assembly according to any one of claims 1 to 9; Multiple battery cells, each of which is provided with a terminal, and the multiple battery cells are connected in series or in parallel through the terminals; Among them, some of the terminals and the output terminal assembly of the multiple battery cells are connected.

11. A battery pack, characterized in that, include: The output pole module as described in claim 10; The housing has a receiving cavity, and the output electrode module is disposed within the receiving cavity; A terminal block, one end of which extends into the interior of the housing, and the other end of which extends out of the housing. The end of the terminal block extending into the housing is electrically connected to the second electrical connector in the output module.

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