Weldless electric connection structure and power battery module

Abstract

The present disclosure provides a kind of welding-free electric connection structure and power battery module.The welding-free electric connection structure includes clamping and fixing assembly and electric connection assembly;Clamping and fixing assembly includes installation connecting rod and two fixed support plates, two fixed support plates are used for detachable installation on the two ends of the battery cell assembly by installation connecting rod, two fixed support plates are used for respectively holding the limit on the two ends of the battery cell assembly;Each electric connection assembly is used for being arranged between corresponding fixed support plate and battery cell assembly, the conductive end of electric connection assembly is used for abutting and electrically connected with the pole end of battery cell assembly, and the fixed support plate is used for holding the fixed end of electric connection assembly abutting on the side surface adjacent to battery cell assembly.The welding-free electric connection structure can not only reduce the production cost and maintenance cost of battery module, but also improve the production efficiency and maintenance efficiency of battery module.

Description

Technical Field

[0001] This disclosure relates to the technical field of power battery modules, and in particular to a solderless electrical connection structure and a power battery module. Background Technology

[0002] Currently, mainstream power battery modules on the market mainly consist of battery cell components and electrical connection components. Their working principle involves connecting multiple individual battery cells in series through the electrical connection components, thereby achieving electrical connection between the battery cell component and external electrical equipment. In existing technologies, commercially available power battery modules generally use a welding process to fix the electrical connection ends of the electrical connection components and connect them to the terminal ends of the individual battery cells (e.g., existing technology patent CN203839445U).

[0003] However, this welding connection method has significant drawbacks: the welding process between the electrical connection component and the terminal of the battery cell requires complex welding technology and specialized equipment, which not only directly increases the production cost of the power battery module, but also reduces production efficiency due to the cumbersome process. At the same time, when it is necessary to maintain or replace the battery cell, it is necessary to use specialized equipment and technology to separate it from the electrical connection component. This process increases the difficulty of maintaining and replacing the power battery module, and also increases the maintenance cost of the power battery module. This not only greatly increases the production and maintenance costs of the power battery module, but also greatly reduces the production and maintenance efficiency of the power battery module. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a weld-free electrical connection structure and power battery module that can not only reduce production and maintenance costs, but also improve production and maintenance efficiency.

[0005] The purpose of this disclosure is achieved through the following technical solution: A solderless electrical connection structure includes a clamping and fixing component and an electrical connection component; The clamping and fixing assembly is used to clamp and fix the cell assembly to the power battery module. The clamping and fixing assembly includes a mounting connecting rod and two fixing support plates. The two fixing support plates are detachably mounted to both ends of the cell assembly through the mounting connecting rod. The two fixing support plates are used to press and limit the two ends of the cell assembly respectively. The number of electrical connection components is at least two. Each electrical connection component is respectively disposed between the corresponding fixed support plate and the cell assembly. The conductive end of the electrical connection component is used to abut and electrically connect with the terminal end of the cell assembly. The fixed support plate is used to press and abut against the fixed end of the electrical connection component on one side adjacent to the cell assembly, so as to press and limit the electrical connection end of the electrical connection component to the terminal end of the cell assembly.

[0006] In one embodiment, the clamping and fixing assembly further includes a limiting nut. The outer peripheral wall of the first end of the mounting connecting rod is provided with a limiting flange. The second end of the mounting connecting rod forms a threaded connection surface adapted to the limiting nut. The two fixing support plates are respectively formed with first clearance holes opposite to the mounting connecting rod, and the two clearance holes are opposite to each other. The limiting nut is used to thread a connection to the first end of the mounting connecting rod when the mounting connecting rod passes through the two first clearance holes in sequence. The first end of the mounting connecting rod abuts against and limits the side of the corresponding fixing support plate away from the electrical connection assembly through the limiting flange. The second end of the mounting connecting rod abuts against and limits the side of the corresponding fixing support plate away from the electrical connection assembly through the limiting nut.

[0007] In one embodiment, the electrical connection assembly includes at least two electrical connectors and at least one electrical connecting rod. The conductive end of the electrical connection assembly is disposed on the electrical connector, and the fixed end of the electrical connection assembly is disposed on the electrical connecting rod. The conductive end of each electrical connector is used to abut and electrically connect with the terminal end of the corresponding battery cell of the battery cell assembly. Both ends of each electrical connecting rod are respectively welded to and electrically connected to the connecting end of the corresponding electrical connector. Each fixed support plate presses against the side of the corresponding electrical connecting rod away from the electrical connector.

[0008] In one embodiment, each of the electrical connectors includes an electrical connector piece and an electrical connector cap. The conductive end of the electrical connector is disposed on the electrical connector piece, and the connecting end of the electrical connector is disposed on the electrical connector cap. The conductive spring end of each electrical connector piece is used to elastically abut and electrically connect with the terminal end of the corresponding battery cell. The connecting end of the electrical connector piece is formed with a riveting hole. The connecting cap passes through the riveting hole, and the outer peripheral wall of the connecting cap is press-fitted with the hole wall of the riveting hole, so that the electrical connector cap is riveted and fixed and electrically connected to the connecting end of the electrical connector piece. The end of the electrical connector cap away from the electrical connector piece is welded and fixedly electrically connected to the electrical connector rod.

[0009] In one embodiment, the electrical connector includes a conductive spring portion and a connecting portion. The conductive spring end of the electrical connector is disposed on the conductive spring portion, and the connecting end of the electrical connector is disposed on the connecting portion. The conductive spring portion is fixed and electrically connected to the connecting portion for proximity to one side of the battery cell assembly. The conductive spring portion is used to elastically abut and electrically connect with the terminal end of the battery cell. A riveting hole is formed in the connecting portion. The electrical connector cap is riveted and fixed and electrically connected to the connecting portion through the riveting hole. The connecting portion is welded and electrically connected to the electrical connector rod.

[0010] In one embodiment, the conductive spring portion has a bent portion formed at one end adjacent to the battery cell, and the bent portion has an arc transition formed on one side of the terminal end of the battery cell.

[0011] In one embodiment, the electrical connector piece and the electrical connector cap are integrally formed.

[0012] In one embodiment, each of the electrical connectors includes a plurality of conductive spring portions, each of the conductive spring portions being spaced apart along the outer periphery of the connector, and each of the conductive spring portions extending obliquely in a direction away from each other.

[0013] In one embodiment, the clamping and fixing assembly further includes two brackets. Each bracket is disposed between the corresponding fixing support plate and the battery cell assembly. Each bracket has a plurality of spaced-apart battery cell limiting grooves on one side adjacent to the battery cell assembly. Each battery cell limiting groove is used to accommodate and limit one end of the corresponding battery cell. Each bracket also has a second clearance hole. The two ends of the mounting connecting rod pass through the corresponding second clearance hole. Each battery cell limiting groove has a connecting hole at the bottom. Each electrical connector passes through the connecting hole and is disposed in the corresponding battery cell limiting groove, so that the electrical connection end of each electrical connector abuts against and is electrically connected to the corresponding battery cell. Each bracket has a side facing away from the battery cell assembly that presses against the corresponding fixing support plate, so that the clamping and fixing assembly is used to press and limit the battery cell assembly.

[0014] In one embodiment, the bottom of the cell limiting groove is formed with an abutting limiting plane, which surrounds the communicating hole and is used to abut and limit the individual cell.

[0015] A power battery module includes a cell assembly and a solderless electrical connection structure as described in any of the above embodiments. The clamping and fixing assembly clamps and fixes the cell assembly. The two fixing support plates are respectively pressed and limited at both ends of the cell assembly. The conductive end of the electrical connection assembly abuts against and is electrically connected to the terminal end of the cell assembly.

[0016] Compared with the prior art, this disclosure has at least the following advantages: The aforementioned solderless electrical connection structure, in which the clamping and fixing assembly is used to clamp and fix the battery cell assembly to the power battery module, includes a mounting connecting rod and two fixing support plates. The two fixing support plates are detachably mounted to both ends of the battery cell assembly via the mounting connecting rod, and are used to press and limit the battery cell assembly at both ends respectively. The number of electrical connection components is at least two, each electrical connection component being disposed between a corresponding fixing support plate and the battery cell assembly. The conductive end of the electrical connection component is used to abut and electrically connect with the terminal end of the battery cell assembly. The fixing support plate, adjacent to the battery cell assembly, presses and abuts against the fixed end of the electrical connection component, thereby pressing and limiting the electrical connection end of the electrical connection component to the terminal end of the battery cell assembly. This allows the clamping and fixing assembly to clamp and limit the battery cell assembly through the cooperation of the fixing support plate and the mounting connecting rod, while also pressing and limiting the electrical connection end of the electrical connection component. At the terminal end of the battery cell assembly, the electrical connection end of the electrical connection component is reliably connected to the terminal end of the battery cell assembly. Compared with the power battery modules on the market that use welding process to fix and connect the electrical connection end of the electrical connection component to the terminal end of the battery cell assembly, the electrical connection end of the electrical connection component disclosed herein only needs to be fixed to the two ends of the mounting connecting rod and the corresponding fixed support plate to make the electrical connection end of the electrical connection component reliably abut and connect to the terminal end of the battery cell assembly. This effectively reduces the difficulty of production and assembly of the power battery module. Furthermore, when the battery cell assembly needs to be maintained or replaced, the battery cell assembly can be removed from the welding-free electrical connection structure simply by disassembling and separating the fixed support plates corresponding to the two ends of the mounting connecting rod. This facilitates the maintenance and replacement of the battery cell assembly, thereby not only greatly reducing the production and maintenance costs of the power battery module, but also greatly improving the production and maintenance efficiency of the power battery module. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of a solderless electrical connection structure according to an embodiment; Figure 2 for Figure 1 A partial structural diagram of the solderless electrical connection structure shown; Figure 3 for Figure 1 Another partial structural diagram of the solderless electrical connection structure shown; Figure 4 for Figure 1 Another partial structural schematic diagram of the solderless electrical connection structure shown; Figure 5 for Figure 4 An exploded view of a portion of the weldless electrical connection structure shown. Figure 6 for Figure 1 Another partial structural schematic diagram of the solderless electrical connection structure shown; Figure 7 for Figure 6 A partially enlarged schematic diagram of the solderless electrical connection structure shown; Figure 8 A schematic diagram of the structural model for a weld-free electrical connection structure.

[0019] Reference numerals: 10, Power battery module; 100, Weld-free electrical connection structure; 110, Clamping and fixing assembly; 111, Mounting connecting rod; 1111, Limiting flange; 112, Fixing support plate; 1121, First clearance hole; 113, Limiting nut; 114, Bracket; 1141, Cell limiting groove; 11411, Connecting hole; 11412, Abutting limiting surface; 1142, Second clearance hole; 120, Electrical connection assembly; 121, Electrical connector; 1211, Electrical connector piece; 12111, Riveting hole; 12112, Conductive spring piece; 121121, Bending part; 121122, Arc transition; 12113, Connecting part; 1212, Electrical connector cap; 122, Electrical connecting rod; 200, Cell assembly; 210, Individual cell. Detailed Implementation

[0020] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 8As shown, one embodiment of the solderless electrical connection structure 100 includes a clamping and fixing assembly 110 and an electrical connection assembly 120. The clamping and fixing assembly 110 is used to clamp and fix the cell assembly 200 to the power battery module 10. The clamping and fixing assembly 110 includes a mounting connecting rod 111 and two fixing support plates 112. The two fixing support plates 112 are detachably mounted to both ends of the cell assembly 200 via the mounting connecting rod 111, and the two fixing support plates 112 are used to press and limit the two ends of the cell assembly 200 respectively. The number of electrical connection assemblies 120 is at least two, each... Electrical connection assemblies 120 are respectively disposed between the corresponding fixed support plate 112 and the cell assembly 200. The conductive end of the electrical connection assembly 120 is used to abut and electrically connect with the terminal end of the cell assembly 200. The fixed support plate 112 is used to press against the fixed end of the electrical connection assembly 120 adjacent to the cell assembly 200, so that the electrical connection end of the electrical connection assembly 120 is used to press and limit the terminal end of the cell assembly 200, so that the clamping and fixing assembly 110 clamps the cell assembly 200 through the mutual cooperation of the fixed support plate 112 and the mounting connecting rod 111. While providing limit protection, it can also press and limit the electrical connection end of the electrical connection component 120 to the terminal end of the cell assembly 200, ensuring that the electrical connection end of the electrical connection component 120 can be reliably electrically connected to the terminal end of the cell assembly 200. Compared with the power battery modules on the market that use welding process to fix and electrically connect the electrical connection end of the electrical connection component to the terminal end of the cell assembly, the electrical connection end of the electrical connection component 120 disclosed herein only needs to be fixed to the two ends of the mounting connecting rod 111 and the corresponding fixed support plate 112 to ensure that the electrical connection end of the electrical connection component 120 is reliably pressed against the terminal end. The battery module 10 is electrically connected to the terminal of the battery cell assembly 200, thereby effectively reducing the difficulty of production and assembly of the power battery module 10. When the battery cell assembly 200 needs to be maintained or replaced, the battery cell assembly 200 can be removed from the solderless electrical connection structure 100 simply by disassembling and separating the fixed support plates 112 corresponding to the two ends of the mounting connecting rod 111. This facilitates the maintenance and replacement of the battery cell assembly 200, thereby not only greatly reducing the production and maintenance costs of the power battery module 10, but also greatly improving the production and maintenance efficiency of the power battery module 10.

[0024] The aforementioned solderless electrical connection structure 100, in which the clamping and fixing assembly 110 is used to clamp and fix the cell assembly 200 to the power battery module 10, includes a mounting connecting rod 111 and two fixing support plates 112. The two fixing support plates 112 are detachably mounted to both ends of the cell assembly 200 via the mounting connecting rod 111, and the two fixing support plates 112 are used to press and limit the two ends of the cell assembly 200 respectively. The number of electrical connection assemblies 120 is at least two, and each electrical connection assembly 120 is used to be disposed at a corresponding... Between the fixed support plate 112 and the cell assembly 200, the conductive end of the electrical connection assembly 120 is used to abut and electrically connect with the terminal end of the cell assembly 200. The fixed support plate 112 is used to press against the fixed end of the electrical connection assembly 120 adjacent to one side of the cell assembly 200, so that the electrical connection end of the electrical connection assembly 120 is used to press and limit the cell assembly 200 to the terminal end. This allows the clamping and fixing assembly 110 to clamp and limit the cell assembly 200 while protecting it through the cooperation of the fixed support plate 112 and the mounting connecting rod 111, and also to... The electrical connection end of the electrical connection assembly 120 is positioned at the terminal end of the cell assembly 200, ensuring that the electrical connection end of the electrical connection assembly 120 can be reliably electrically connected to the terminal end of the cell assembly 200. Compared to power battery modules on the market that use welding processes to fix and electrically connect the electrical connection end of the electrical connection assembly to the terminal end of the cell assembly, the electrical connection end of the electrical connection assembly 120 disclosed herein only requires fixing both ends of the mounting connecting rod 111 to the corresponding fixed support plate 112 to ensure that the electrical connection end of the electrical connection assembly 120 can reliably abut and electrically connect to the cell assembly 200. The terminal end of the battery cell assembly 200 effectively reduces the difficulty of production and assembly of the power battery module 10. When maintenance or replacement of the battery cell assembly 200 is required, the battery cell assembly 200 can be removed from the solderless electrical connection structure 100 simply by disassembling and separating the fixed support plates 112 corresponding to the two ends of the mounting connecting rod 111. This facilitates the maintenance and replacement of the battery cell assembly 200, thereby not only greatly reducing the production and maintenance costs of the power battery module 10, but also greatly improving the production and maintenance efficiency of the power battery module 10.

[0025] like Figures 1 to 2 As shown, in one embodiment, the fixed support plate 112 is a plastic insulating plate.

[0026] like Figure 4 As shown, in one embodiment, the electrical connection component 120 is a copper electrical connection component or an aluminum electrical connection component, so that the electrical connection component 120 can have good conductivity and structural strength.

[0027] like Figures 1 to 4As shown, in one embodiment, the clamping and fixing assembly 110 further includes a limiting nut 113. A limiting flange 1111 protrudes from the outer peripheral wall of the first end of the mounting connecting rod 111. The second end of the mounting connecting rod 111 forms a threaded connection surface adapted to the limiting nut 113. Two fixing support plates 112 respectively form first clearance holes 1121 opposite to the mounting connecting rod 111, and the two clearance holes are opposite to each other. The limiting nut 113 is used to thread-connect the mounting connecting rod 111 to the first end of the mounting connecting rod 111 when the mounting connecting rod 111 passes through the two first clearance holes 1121 in sequence. The first end of the mounting connecting rod 111 abuts against and limits the side of the corresponding fixing support plate 112 away from the electrical connection assembly 120 through the limiting flange 1111. The second end of the mounting connecting rod 111 is connected to the corresponding fixing support plate 112 through the limiting nut 113. The side of the 12th fixed support plate 112 facing away from the electrical connection assembly 120 abuts against the limiting position. When the limiting nut 113 is tightened, the two fixed support plates 112 can securely clamp the limiting cell assembly 200 by the pressing of the limiting flange 1111 and the limiting nut 113. This allows the cell assembly 200 to be securely limited within the weldless electrical connection structure 100 by the clamping and fixing assembly 110. At the same time, the electrical connection end of the electrical connection assembly 120 can also be securely abutted against and electrically connected to the terminal end of the cell assembly 200 by the clamping and fixing assembly 110, further reducing the assembly difficulty of the power battery module 10. When the limiting nut 113 is loosened, the cell assembly 200 can be removed from the clamping and fixing assembly 110, further reducing the maintenance and replacement difficulty of the cell assembly 200, thereby greatly improving the production efficiency and maintenance efficiency of the power battery module 10.

[0028] like Figure 1 and Figure 4 As shown, in one embodiment, the electrical connection assembly 120 includes at least two electrical connectors 121 and at least one electrical connecting rod 122. The conductive end of the electrical connection assembly 120 is disposed on the electrical connector 121, and the fixed end of the electrical connection assembly 120 is disposed on the electrical connecting rod 122. The conductive end of each electrical connector 121 is used to abut and electrically connect with the terminal end of the corresponding battery cell 210 of the battery cell assembly 200. Both ends of each electrical connecting rod 122 are respectively welded to and electrically connected to the connecting end of the corresponding electrical connector 121, so that different battery cells 210 can be connected by electrical connection. The connector 121 and the electrical connecting rod 122 cooperate to form an electrical connection; each fixed support plate 112 presses against the side of the corresponding electrical connecting rod 122 away from the electrical connector 121, so that the fixed support plate 112 can press and limit the conductive end of the electrical connector 121 to the terminal end of the cell 210 through the electrical connecting rod 122, so that the conductive end of the electrical connector 121 can reliably abut against and be electrically connected to the terminal end of the cell 210, ensuring the electrical connection stability of the power battery module 10, thereby greatly improving the use stability of the power battery module 10.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, in one embodiment, each electrical connector 121 includes an electrical connector piece 1211 and an electrical connector cap 1212. The conductive end of the electrical connector 121 is located on the electrical connector piece 1211, and the connecting end of the electrical connector 121 is located on the electrical connector cap 1212. The conductive spring end of each electrical connector piece 1211 is used to elastically abut and electrically connect with the terminal end of the corresponding battery cell 210. This allows the conductive spring end of the electrical connector piece 1211 to buffer and disperse the compressive force between the electrical connector piece 1211 and the terminal end of the battery cell 210 through its own elastic properties. This reduces the risk of damage or even destruction caused by excessive compressive force between the conductive spring end of the electrical connector piece 1211 and the terminal end of the battery cell 210. This not only allows the conductive spring end of the electrical connector piece 1211 to more reliably abut and electrically connect with the terminal end of the battery cell 210, but also greatly improves the electrical connector piece 1211's... The lifespan of battery cell 211 and battery cell 210 is extended, thereby greatly improving the stability of the power battery module 10. The connecting end of the electrical connector 1211 has a riveting hole 12111, and the connecting cap passes through the riveting hole 12111. The outer peripheral wall of the connecting cap is press-fitted with the wall of the riveting hole 12111, so that the electrical connecting cap 1212 is riveted and fixed and electrically connected to the connecting end of the electrical connector 1211. The end of the electrical connecting cap 1212 away from the electrical connector 1211 is welded and fixed to the electrical connecting rod 122, so that the electrical connector 1211 can be reliably fixed to the connecting end of the electrical connector 1211 through the riveting hole 12111, ensuring that the electrical connector 1211 is reliably electrically connected to the electrical connecting cap 1212, so that the electrical connecting rod 122 can be reliably electrically connected to the electrical connector 1211 through the electrical connecting cap 1212, thereby greatly improving the stability of the power battery module 10.

[0030] like Figure 1 , Figure 4 and Figure 5As shown, in one embodiment, the electrical connector 1211 includes a conductive spring portion 12112 and a connecting portion 12113. The conductive spring end of the electrical connector 1211 is disposed on the conductive spring portion 12112, and the connecting end of the electrical connector 1211 is disposed on the connecting portion 12113. The conductive spring portion 12112 is fixed and electrically connected to the connecting portion 12113 for proximity to one side of the battery cell assembly 200. The conductive spring portion 12112 is used to elastically abut and electrically connect with the terminal end of the battery cell 210, so that the conductive spring portion 12112 can buffer and disperse the compressive force between the electrical connector 1211 and the terminal end of the battery cell 210 through its own elastic properties, thereby reducing the pressure between the conductive spring portion 12112 and the terminal end of the battery cell 210. The excessive pressure can prevent damage or even breakage. This design not only ensures that the conductive spring piece 12112 can more reliably abut against and electrically connect to the terminal end of the battery cell 210, but also greatly improves the service life of the electrical connector 1211 and the battery cell 210, thereby significantly improving the stability of the power battery module 10. The riveting hole 12111 is formed in the connecting part 12113. The electrical connector cap 1212 is riveted and fixed through the riveting hole 12111 and electrically connected to the connecting part 12113. The connecting part 12113 is welded to the electrical connector rod 122 and electrically connected to ensure good electrical connection stability between the electrical connector cap 1212 and the connecting part 12113, thereby significantly improving the stability of the power battery module 10.

[0031] like Figure 5 As shown, in one embodiment, the conductive spring piece 12112 and the connecting part 12113 are integrally formed to improve the structural compactness of the electrical connecting piece 1211.

[0032] like Figure 1 , Figure 4 and Figure 5 As shown, in one embodiment, the conductive spring portion 12112 has a bent portion 121121 at one end adjacent to the battery cell 210, and the bent portion 121121 has an arc transition 121122 on one side of the terminal end of the battery cell 210, so as to avoid the end of the conductive spring portion 12112 adjacent to the battery cell 210 being too sharp, which would cause damage or even breakage of the battery cell 210 during the contact with the terminal end of the battery cell 210, thereby greatly improving the service life of the battery cell assembly 200.

[0033] like Figure 5 As shown, in one embodiment, the electrical connector 1211 and the electrical connector cap 1212 are integrally formed to improve the structural formability of the electrical connector 121.

[0034] like Figure 1 , Figure 4 and Figure 5As shown, in one embodiment, each electrical connector 1211 includes a plurality of conductive spring portions 12112. Each conductive spring portion 12112 is spaced apart along the outer periphery of the connector 12113, and each conductive spring portion 12112 extends obliquely in a direction away from each other. This allows the conductive springs to decompose the compressive force transmitted by the fixed support plate 112 into a force in the same direction as the compressive force and a force perpendicular to the direction of the compressive force when the fixed support plate 112 presses the electrical connector 120 toward the cell assembly 200. This reduces the compressive force between the conductive spring portion 12112 and the cell 210, which not only greatly improves the pressure-bearing capacity of the conductive spring portion 12112, but also reduces the risk of damage or even destruction between the conductive spring portion 12112 and the cell 210 due to excessive compressive force. This, in turn, greatly improves the stability and service life of the power battery module 10.

[0035] like Figures 1 to 6 As shown, in one embodiment, the clamping and fixing assembly 110 further includes two brackets 114. Each bracket 114 is disposed between the corresponding fixing support plate 112 and the cell assembly 200. Each bracket 114 has a plurality of spaced-apart cell limiting grooves 1141 on one side adjacent to the cell assembly 200. Each cell limiting groove 1141 is used to accommodate one end of the corresponding cell unit 210. Each bracket 114 also has a second clearance hole 1142. The two ends of the mounting connecting rod 111 pass through the corresponding second clearance hole 1142. Each cell limiting groove 1141 has a connecting hole 11411 at the bottom. Each electrical connector 121 passes through the connecting hole 11411 and is disposed in the corresponding cell limiting groove 1141, so that the electrical connection end of each electrical connector 121 is used to abut and electrically connect to the corresponding cell. Each battery cell 210 has a bracket 114 for pressing and abutting against the corresponding fixed support plate 112 on one side facing away from the battery cell assembly 200, so that the clamping and fixing assembly 110 can press and limit the battery cell assembly 200. This allows the clamping and fixing assembly 110 to limit and protect each battery cell 210 of the battery cell assembly 200 through the bracket 114, preventing the battery cell 210 from shaking or even displacing relative to the electrical connector 121 due to external factors such as collision or vibration during the use of the power battery module 10. This not only ensures that each battery cell 210 can be firmly abutted and electrically connected to the corresponding electrical connector 121, but also effectively prevents adjacent battery cells 210 from rubbing or colliding with each other due to shaking or displacement, thereby greatly improving the stability and service life of the power battery module 10.

[0036] like Figure 7As shown, in one embodiment, the bottom of the cell limiting groove 1141 is formed with an abutting limiting plane 11412. The abutting limiting plane 11412 surrounds the connecting hole 11411 and is used to abut and limit the cell unit 210, so that the bracket 114 can clamp and limit the cell unit 210 through the abutting limiting plane 11412, thereby preventing the cell unit 210 from shaking or even displacing relative to the electrical connector 121 due to external factors such as collision or vibration during the use of the power battery module 10.

[0037] This disclosure also provides a power battery module 10, including a cell assembly 200 and a solderless electrical connection structure 100 as described in any of the above embodiments. A clamping and fixing assembly 110 clamps and fixes the cell assembly 200, two fixing support plates 112 respectively press and limit the two ends of the cell assembly 200, and the conductive end of the electrical connection assembly 120 abuts against and is electrically connected to the terminal end of the cell assembly 200.

[0038] Compared with the prior art, this disclosure has at least the following advantages: The aforementioned power battery module 10 includes a clamping and fixing assembly 110 for clamping and fixing the battery cell assembly 200 to the power battery module 10. The clamping and fixing assembly 110 includes a mounting connecting rod 111 and two fixing support plates 112. The two fixing support plates 112 are detachably mounted to both ends of the battery cell assembly 200 via the mounting connecting rod 111, and the two fixing support plates 112 are used to press and limit the battery cell assembly 200 to both ends respectively. The number of electrical connection assemblies 120 is at least two, and each electrical connection assembly 120 is used to be disposed on a corresponding fixing assembly. Between the support plate 112 and the cell assembly 200, the conductive end of the electrical connection assembly 120 is used to abut and electrically connect with the terminal end of the cell assembly 200. The fixed support plate 112 is used to press against the fixed end of the electrical connection assembly 120 adjacent to one side of the cell assembly 200, so that the electrical connection end of the electrical connection assembly 120 is used to press and limit the cell assembly 200 to the terminal end. This allows the clamping and fixing assembly 110 to clamp and limit the cell assembly 200 while protecting it through the cooperation of the fixed support plate 112 and the mounting connecting rod 111, and also to... The electrical connection end of the connection component 120 is positioned at the terminal end of the cell assembly 200, ensuring that the electrical connection end of the connection component 120 can be reliably electrically connected to the terminal end of the cell assembly 200. Compared to power battery modules on the market that use welding to fix and electrically connect the electrical connection end of the connection component to the terminal end of the cell assembly, the electrical connection end of the connection component 120 disclosed herein only requires fixing both ends of the mounting connecting rod 111 to the corresponding fixing support plate 112 to ensure that the electrical connection end of the connection component 120 can reliably abut and electrically connect to the cell assembly 200. The terminal end of the battery cell assembly 200 effectively reduces the difficulty of production and assembly of the power battery module 10. When maintenance or replacement of the battery cell assembly 200 is required, the battery cell assembly 200 can be removed from the solderless electrical connection structure 100 simply by disassembling and separating the fixed support plates 112 corresponding to the two ends of the mounting connecting rod 111. This facilitates the maintenance and replacement of the battery cell assembly 200, thereby not only greatly reducing the production and maintenance costs of the power battery module 10, but also greatly improving the production and maintenance efficiency of the power battery module 10.

[0039] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A solderless electrical connection structure, characterized in that, Includes clamping and fixing components and electrical connection components; The clamping and fixing assembly is used to clamp and fix the cell assembly to the power battery module. The clamping and fixing assembly includes a mounting connecting rod and two fixing support plates. The two fixing support plates are detachably mounted to both ends of the cell assembly through the mounting connecting rod. The two fixing support plates are used to press and limit the two ends of the cell assembly respectively. The number of electrical connection components is at least two. Each electrical connection component is respectively disposed between the corresponding fixed support plate and the cell assembly. The conductive end of the electrical connection component is used to abut and electrically connect with the terminal end of the cell assembly. The fixed support plate is used to press and abut against the fixed end of the electrical connection component on one side adjacent to the cell assembly, so as to press and limit the electrical connection end of the electrical connection component to the terminal end of the cell assembly.

2. The solderless electrical connection structure according to claim 1, characterized in that, The clamping and fixing assembly further includes a limiting nut. The outer peripheral wall of the first end of the mounting connecting rod is provided with a limiting flange. The second end of the mounting connecting rod forms a threaded connection surface adapted to the limiting nut. The two fixing support plates are respectively provided with first clearance holes that are opposite to the mounting connecting rod. The two clearance holes are opposite to each other. The limiting nut is used to thread the mounting connecting rod to the first end of the mounting connecting rod when the mounting connecting rod passes through the two first clearance holes in sequence. The first end of the mounting connecting rod abuts against the side of the corresponding fixing support plate away from the electrical connection assembly through the limiting flange. The second end of the mounting connecting rod abuts against the side of the corresponding fixing support plate away from the electrical connection assembly through the limiting nut.

3. The solderless electrical connection structure according to claim 1, characterized in that, The electrical connection assembly includes at least two electrical connectors and at least one electrical connecting rod. The conductive end of the electrical connection assembly is disposed on the electrical connector, and the fixed end of the electrical connection assembly is disposed on the electrical connecting rod. The conductive end of each electrical connector is used to abut and electrically connect with the terminal end of the corresponding battery cell of the battery cell assembly. The two ends of each electrical connecting rod are respectively welded to and electrically connected with the connecting end of the corresponding electrical connector. Each fixed support plate presses against the side of the corresponding electrical connecting rod away from the electrical connector.

4. The solderless electrical connection structure according to claim 3, characterized in that, Each of the electrical connectors includes an electrical connector piece and an electrical connector cap. The conductive end of the electrical connector is located on the electrical connector piece, and the connecting end of the electrical connector is located on the electrical connector cap. The conductive spring end of each electrical connector piece is used to elastically abut and electrically connect with the terminal end of the corresponding battery cell. The connecting end of the electrical connector piece is formed with a riveting hole. The connecting cap passes through the riveting hole, and the outer peripheral wall of the connecting cap is press-fitted with the wall of the riveting hole so that the electrical connector cap is riveted and fixed and electrically connected to the connecting end of the electrical connector piece. The end of the electrical connector cap away from the electrical connector piece is welded and fixedly electrically connected to the electrical connector rod.

5. The solderless electrical connection structure according to claim 4, characterized in that, The electrical connector includes a conductive spring portion and a connecting portion. The conductive spring end of the electrical connector is disposed in the conductive spring portion, and the connecting end of the electrical connector is disposed in the connecting portion. The conductive spring portion is fixed and electrically connected to the connecting portion for proximity to one side of the battery cell assembly. The conductive spring portion is used to elastically abut and electrically connect with the terminal end of the battery cell. The riveting hole is formed in the connecting portion. The electrical connector cap is riveted and fixed and electrically connected to the connecting portion through the riveting hole. The connecting portion is welded and electrically connected to the electrical connector rod.

6. The solderless electrical connection structure according to claim 5, characterized in that, The conductive spring portion has a bent portion formed at one end adjacent to the battery cell, and the bent portion has an arc transition formed on one side of the terminal end of the battery cell; and / or, The electrical connector and the electrical connector cap are integrally formed.

7. The solderless electrical connection structure according to claim 5, characterized in that, Each of the electrical connectors includes a plurality of conductive spring portions, each of the conductive spring portions being spaced apart along the outer periphery of the connector, and each of the conductive spring portions extending obliquely in a direction away from each other.

8. The solderless electrical connection structure according to claim 3, characterized in that, The clamping and fixing assembly further includes two brackets. Each bracket is disposed between the corresponding fixing support plate and the battery cell assembly. Each bracket has a plurality of spaced-apart battery cell limiting grooves on one side adjacent to the battery cell assembly. Each battery cell limiting groove is used to accommodate and limit one end of the corresponding battery cell. Each bracket also has a second clearance hole. The two ends of the mounting connecting rod pass through the corresponding second clearance hole. Each battery cell limiting groove has a connecting hole at the bottom. Each electrical connector passes through the connecting hole and is disposed in the corresponding battery cell limiting groove, so that the electrical connection end of each electrical connector abuts against and is electrically connected to the corresponding battery cell. Each bracket has a side facing away from the battery cell assembly that presses against the corresponding fixing support plate, so that the clamping and fixing assembly is used to press and limit the battery cell assembly.

9. The solderless electrical connection structure according to claim 8, characterized in that, The bottom of the cell limiting groove has an abutting limiting plane, which surrounds the communicating hole and is used to abut and limit the individual cell.

10. A power battery module, characterized in that, The invention includes a battery cell assembly and a solderless electrical connection structure as described in any one of claims 1 to 9, wherein the clamping and fixing assembly clamps and fixes the battery cell assembly, the two fixing support plates respectively press and limit the two ends of the battery cell assembly, and the conductive end of the electrical connection assembly abuts against and is electrically connected to the terminal end of the battery cell assembly.

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