Conductive assembly and battery pack assembly

Abstract

The utility model discloses a conductive assembly and a battery pack assembly, and relates to the technical field of batteries. The conductive assembly is used for electrically connecting a battery pack with electric equipment and comprises a conductive part and a connecting part, the conductive part and the connecting part are designed in a separated mode, at least part of the conductive part is arranged on the connecting part in a sleeving mode, one side of the connecting part is used for being connected with the battery pack, and the other side of the connecting part is used for being connected with the electric equipment. The conductive assembly provided by the utility model is composed of the conductive piece and the connecting piece, the conductive piece and the connecting piece are two independent structures, and the conductive piece and the connecting piece can be correspondingly designed according to different use scenes and requirements, so that the conductive assembly has better flexibility during use. And the separated conductive piece and the connecting piece avoid the integral forming design, so that the production cost is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to conductive components and battery pack components. Background Art

[0002] With the continuous development of new energy technologies, lithium-ion batteries are being used more and more widely. The positive and negative electrodes of lithium-ion battery packs are usually connected to other structures through output terminals to achieve the output of battery voltage. The output terminals of current lithium-ion battery packs are usually integrated structures made of the same material, which has poor flexibility. For example, the output terminals cannot be flexibly designed according to different scenarios and needs. In addition, the output terminals of the integrated structure are prepared by subtractive processing, which has a high production cost. Utility Model Content

[0003] The present application provides a conductive component and a battery pack component. By designing the conductive component as independent conductive parts and connectors, the conductive parts and connectors have good flexibility. The conductive parts and connectors can be flexibly designed to meet the needs of different scenarios.

[0004] In a first aspect, the present application provides a conductive component for electrically connecting a battery pack and an electrical device, comprising: a conductive member and a connecting member, wherein the conductive member and the connecting member are separately designed, and at least part of the conductive member is sleeved on the connecting member, one side of the connecting member is used to connect to the battery pack, and the other side of the connecting member is used to connect to the electrical device.

[0005] The conductive assembly provided by the present application is composed of a conductive member and a connector. The conductive member is used to achieve electrical connection, and the connector is used to connect with other structures. The conductive member and the connector are two independent structures. The conductive member and the connector can be designed accordingly according to different usage scenarios and requirements, so that the conductive assembly has better flexibility when used. In addition, the separated conductive member and connector avoid the one-piece molding design, which effectively reduces the production cost.

[0006] In a possible implementation, the conductive component further includes a sealing structure, the sealing structure is located in the accommodating cavity, and the sealing structure seals and connects the inner wall surface of the conductive member and the outer wall surface of the connecting member. The sealing structure is used to seal the accommodating cavity and the connecting member to prevent water, dust and other impurities from entering the battery pack through the accommodating cavity and affecting the life and function of the battery pack.

[0007] In a possible implementation, the conductive member has a receiving cavity that penetrates the conductive member, and the connector includes a first section, a second section, and a third section that are sequentially adjacent to each other, the second section is located in the receiving cavity, at least a portion of the first section and at least a portion of the third section are located outside the receiving cavity, the first section is used to connect to the electrical device, and the third section is used to connect to the battery pack. At least a portion of the first section and at least a portion of the third section are located outside the receiving cavity, so as to facilitate assembly of the connector with other structures.

[0008] In one possible implementation, the connector has a cylindrical structure, and the diameter of the first section is greater than or equal to the diameter of the third section, which can ensure that the connector passes through the accommodating cavity smoothly and reduce the resistance between the connector and the accommodating cavity when passing through the accommodating cavity, thereby facilitating the assembly between the connector and the conductive member.

[0009] In a possible implementation, the inner wall surface of the conductive part and the outer wall surface of the connecting part are clearance-fitted or interference-fitted. The clearance-fitting is conducive to the installation and removal of the conductive part and the connecting part, and can also extend the service life of the conductive part and the connecting part. The interference-fitting can increase the bonding strength between the conductive part and the connecting part, prevent loosening and sliding between the conductive part and the connecting part, and ensure that the third section is not affected when the first section is assembled.

[0010] In a possible implementation, the connector is provided with a first anti-rotation portion, and the inner wall surface of the conductive member is provided with a matching portion, and the matching portion is matched and connected with the first anti-rotation portion to limit the connector from rotating relative to the conductive member. This prevents the connector from rotating relative to the conductive member when the connector is fixedly installed with other structures, ensures that the relative position relationship between the connector and the conductive member is stable, and ultimately improves the overall stability of the conductive assembly.

[0011] In a possible implementation, the first anti-rotation portion includes a protrusion and / or a groove, and the matching portion includes a protrusion and / or a groove. The first anti-rotation portion and the second anti-rotation portion prevent the connecting member from rotating relative to the conductive member through the matching relationship between the protrusion and the groove.

[0012] In a possible implementation, the connector is cylindrical, the number of the first anti-rotation parts is at least two and the at least two first anti-rotation parts are spaced apart on the outer wall surface of the connector along the circumferential direction of the connector, and / or the number of the matching parts is at least two and the at least two matching parts are spaced apart on the inner wall surface of the conductive part along the circumferential direction of the connector. Under this design, it is helpful to better ensure the relative position relationship between the connector and the conductive part is stable, and improve the overall stability of the conductive component.

[0013] In a possible implementation, the conductive member is made of at least one of copper and its alloys, aluminum and its alloys, or nickel and its alloys. Copper and its alloys, aluminum and its alloys, or nickel and its alloys have good electrical conductivity, which can ensure the electrical conductivity of the conductive member and is conducive to improving the electrical connection effect between the conductive member and other structures.

[0014] In a possible implementation, the material of the connector is at least one of stainless steel, carbon steel or alloy steel. The connector is made of stainless steel, carbon steel or alloy steel and has high tensile strength, which can ensure that the connector is not easily deformed or even broken when it is installed in conjunction with other fixing parts or subjected to strong external forces.

[0015] In a possible implementation, a limiting portion is provided between the first section and the second section, and the conductive member includes an abutting surface, and the abutting surface and the limiting portion abut each other. The outer wall surface of the limiting portion can abut against the abutting surface to limit the position of the connecting member passing through the accommodating cavity for assembly with the conductive member, thereby avoiding position deviation during assembly of the connecting member and the conductive member.

[0016] In one possible implementation, the conductive component also includes a sealing structure, which is located in the accommodating cavity. The sealing structure seals and connects the inner wall surface of the conductive component with the outer wall surface of the limiting portion, which can more effectively prevent external impurities such as liquid, gas or dust from entering the accommodating cavity and protect the safety of the battery pack.

[0017] In a possible implementation, a first thread is provided on the outer wall surface of the first section, a second thread is provided on the outer wall surface of the third section, and the first thread and the second thread have the same rotation direction. When the first section on the outside of the battery pack is tightened with the nut, the tightening effect of the third section on the inside of the battery pack and the nut is enhanced.

[0018] In one possible implementation, a second anti-rotation portion is provided at one end of the first section away from the third section, and the second anti-rotation portion is used to be inserted into a tightening tool and abut against an inner wall surface of the tightening tool to limit the rotation of the connecting member relative to the conductive member. The second anti-rotation portion cooperates with the tightening tool to perform anti-rotation limiting to prevent the connecting member from rotating in the accommodating cavity of the conductive member when the third section is fixedly installed.

[0019] In the second aspect, the present application provides a battery pack assembly, comprising a battery pack and any one of the above-mentioned conductive assemblies, wherein the conductive assemblies are electrically connected to the battery pack, and the conductive assemblies are used to electrically connect the battery pack and the electrical device. The battery pack assembly provided by the present application is electrically connected through the conductive member of the conductive assembly, and is fixedly connected through the connector of the conductive assembly. The conductive member and the connector are two independent structures, and the conductive member and the connector can be designed accordingly according to different usage scenarios and requirements, so that the conductive assembly has better flexibility when in use, which is more conducive to the conductive assembly transmitting the voltage of the battery pack to other electrical devices.

[0020] In one possible implementation, the battery pack assembly further includes a conductive terminal and a fixing member, wherein the fixing member is connected to the connecting member to fix one end of the conductive terminal between the fixing member and the conductive member, one end of the conductive terminal is electrically connected to the conductive member, and the other end of the conductive terminal is electrically connected to the pole of the battery pack. On the inner side of the battery pack, the connecting member cooperates with the fixing member to bring one end of the conductive terminal into contact with the conductive member to achieve electrical connection between the conductive terminal and the conductive member, and the other end is electrically connected to the positive pole or negative pole of the battery pack. On the outer side of the battery pack, the connecting member cooperates with the fixing member to bring one end of the conductive terminal into contact with the conductive member to achieve electrical connection between the conductive terminal and the conductive member, and the other end can be electrically connected to other electrical devices, and the voltage of the battery pack is transmitted to the electrical devices through the conductive terminals and the conductive assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the conductive component structure provided by the embodiment of the present application;

[0022] Figure 2 yes Figure 1 Cross-section at AA in the middle;

[0023] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0024] Figure 4 is a schematic diagram of a connector structure provided in another embodiment of the present application;

[0025] Figure 5 is a schematic diagram of a connector structure provided in another embodiment of the present application;

[0026] Figure 6 is a schematic diagram of the positional relationship between the sealing structure and the limiting portion provided in the embodiment of the present application;

[0027] Fig. 7A is a schematic diagram of the cooperation between the first anti-rotation portion and the cooperation portion provided in an embodiment of the present application;

[0028] Figure 7BIt is a structural schematic diagram of the matching part provided in the embodiment of the present application;

[0029] Figure 7C is a schematic structural diagram of a first anti-rotation portion provided in an embodiment of the present application;

[0030] Figure 8 is a schematic diagram of the positional relationship between the limiting portion and the conductive member provided in an embodiment of the present application;

[0031] Fig. 9 is a schematic diagram of the positional relationship between the limiting portion and the conductive member provided in another embodiment of the present application;

[0032] Fig.10 It is a schematic diagram of the connection relationship between the conductive component and the conductive terminal provided in the embodiment of the present application;

[0033] Fig.11 This is a schematic diagram of the connection relationship between the conductive component and the conductive terminal provided in another embodiment of the present application;

[0034] Fig.12 It is a schematic diagram of the structure of the battery pack assembly provided in the embodiment of the present application. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0036] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0037] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0038] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0039] It should be understood that the terms “first”, “second”, etc. used in the present application are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0040] In the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0042] The present application provides a conductive component 100 that can electrically connect a battery pack and an electrical device. One end of the conductive component 100 can be electrically connected to the positive electrode column and the negative electrode column of the battery pack 200 respectively through structures such as conductive terminals, and the other end of the conductive component 100 can be electrically connected to the electrical device through structures such as conductive terminals, so that the battery pack outputs the voltage of the battery pack to other electrical devices through the conductive component. Figures 1 to 5 As shown, the conductive component 100 includes a conductive member 110 and a connector 120, and the conductive member 110 can be electrically connected to the battery pack. The conductive member 110 and the connector 120 are designed separately. The conductive member 110 and the connector 120 are designed separately, which means that the conductive member 110 and the connector 120 are two independent structures. The conductive member 110 and the connector 120 are separated in physical form, and the conductive member 110 and the connector 120 are also prepared separately during processing and preparation. Although the conductive member 110 and the connector 120 are separated, they need to be assembled by a certain connection method.

[0043] At least part of the conductive member 110 is mounted on the connector 120. One side of the connector 120 is used to connect to the battery pack, and the other side of the connector 120 is used to connect to the electrical device. The conductive member 110 can be completely mounted on the connector 120, or partially mounted on the connector 120. The connector 120 can be directly fixedly connected to the battery pack and the electrical device, respectively, or can be indirectly connected through other structures. In the embodiment of the present application, the connector 120 can be fixedly connected to the battery pack and the electrical device, respectively, through structures such as conductive terminals. It can be understood that, Figure 1 The cylindrical shape of the conductive member 110 shown in the figure is only for illustration, and the present application does not limit the shape of the conductive member 110, and the conductive member 110 can be in any shape.

[0044] The conductive component provided in the present application includes a conductive part 110 and a connector 120. The conductive part 110 is used to achieve electrical connection, and the connector 120 is used to connect with other structures. The conductive part 110 and the connector 120 are two independent structures. The conductive part 110 and the connector 120 can be designed accordingly according to different usage scenarios and requirements, so that the conductive component has better flexibility when in use. For example, the conductive part 110 can be prepared from a material with good conductive properties, which meets the requirements of high conductive properties of the conductive part 110 and is conducive to improving the electrical connection effect with the battery pack. For another example, the connector 120 can be prepared from a material with good tensile properties, which meets the requirements of high tensile strength of the connector 120, and ensures that the connector 120 is not easily deformed or even broken when it is installed in conjunction with other fixings or subjected to strong external forces. In addition, the conductive part 110 and the connector 120 are prepared separately, avoiding the integrated subtractive processing and molding design, and effectively reducing the production cost.

[0045] In a possible implementation, the conductive member 110 has a receiving cavity 111 that penetrates the conductive member 110, and the receiving cavity 111 penetrates the conductive member 110 along a first direction, and the first direction can be any direction. In the implementation of the present application, the first direction is taken as an example of the X direction. The conductive component 100 also includes a sealing structure 130, which is located in the receiving cavity 111, and the sealing structure 130 seals and connects the inner wall surface 112 of the conductive member 110 and the outer wall surface 124 of the connector 120.

[0046] The sealing structure 130 is used to seal the accommodating cavity 111 and the connecting member 120 to prevent external impurities such as liquid, gas or dust from entering the battery pack 200 through the accommodating cavity 111 and affecting the life and function of the battery pack 200. Figure 2 and Figure 3 As shown, the sealing structure 130 can be located in the accommodating cavity 111, and the sealing structure 130 can be located at any position in the accommodating cavity 111. For example, the sealing structure 130 can be located at both ends of the accommodating cavity 111, or the sealing structure 130 can be located in the middle of the accommodating cavity 111. The number of the sealing structure 130 is at least one, and the number of the sealing structures 130 can be one, two, or four. The sealing structures 130 are distributed along the first direction. Figure 2The sealing structure 130 shown has two and is located at one end of the accommodating cavity 111 near the first section 121. The sealing structure 130 can be a sealing ring or a sealing ring structure, and is sleeved on the connecting member 120. The inner wall surface of the sealing structure 130 in the form of a sealing ring or a sealing ring is connected to the outer wall surface 124 of the connecting member 120, and the outer wall surface of the sealing structure 130 in the form of a sealing ring or a sealing ring is connected to the inner wall surface 112 of the conductive member 110, so that the inner wall surface 112 of the conductive member 110 is sealed and connected to the outer wall surface 124 of the connecting member 120. The sealing ring or the sealing ring can be a combination of one or more of EPDM rubber, silicone rubber and foaming materials. It can be understood that the sealing structure 130 can also be an adhesive such as a sealant or a solder such as a welding wire. The inner wall surface 112 of the conductive part 110 and the outer wall surface 124 of the connector 120 may be completely filled with a sealing structure 130 in the form of an adhesive such as sealant or a solder such as a welding wire to achieve a sealed connection, or may be only partially filled with a sealing structure 130 in the form of an adhesive such as sealant or a solder such as a welding wire to achieve a sealed connection.

[0047] In a possible implementation, the connector 120 passes through the accommodating cavity 111 along a first direction to connect with the conductive member 110. The conductive member 110 is sleeved on the connector 120. The connector 120 includes a first section 121, a second section 122, and a third section 123 that are arranged adjacent to each other in sequence. The first section 121, the second section 122, and the third section 123 are adjacent to each other along the connection direction between the connector 120 and the conductive member 110, and the lengths of the first section 121, the second section 122, and the third section 123 along the connection direction between the connector 120 and the conductive member 110 may be equal or unequal. The second section 122 is located in the accommodating cavity 111, and the second section 122 may be completely located in the accommodating cavity 111, or may be partially located in the accommodating cavity 111. At least part of the first section 121 and at least part of the third section 123 are located outside the accommodating cavity 111. The first section 121 can be completely or partially located outside the accommodating cavity 111, and the third section 123 can be completely or partially located outside the accommodating cavity 111. The connector 120 can cooperate with other fixing members to fix and install the conductive component 100. The first section 121 is used to connect with the structure outside the battery pack 200, and the third section 123 is used to connect with the structure inside the battery pack 200. At least part of the first section 121 and at least part of the third section 123 are located outside the accommodating cavity 111, which is conducive to the assembly of the connector 120 with other structures and convenient for installation and disassembly.

[0048] In one embodiment, see Figure 4As shown, the outer wall surface of the connecting member 120 is a smooth wall surface, the accommodating cavity 111 is the basis for distinguishing the first section 121, the second section 122 and the third section 123, the part of the connecting member 120 located in the accommodating cavity 111 is the second section, the connecting member 120 located outside the accommodating cavity 111 is the first section 121 and the third section 123, and the first section 121 is located on the side of the connecting member 120 in the opposite direction of X. It can be understood that the connecting member 120 in this embodiment can be a pin, which can be assembled with the pin hole.

[0049] In one embodiment, see Figure 2 and Figure 5 As shown, threads are provided on the outer wall surface of the connector 120, and the threads are the basis for distinguishing the first section 121, the second section 122 and the third section 123. Specifically, the second section 122 is not provided with threads, and the parts of the connector 120 provided with threads are the first section 121 and the third section 123. Among them, the threads of the first section 121 and the third section 123 can be completely located outside the accommodating cavity 111; or the threaded part of the first section 121 is located outside the accommodating cavity 111, and the threaded part of the third section 123 is completely located outside the accommodating cavity; or the threaded part of the first section 121 is located outside the accommodating cavity 111, and the threaded part of the third section 123 is also located outside the accommodating cavity. It can be understood that the connector 120 in this embodiment can be a bolt, which can be assembled with a nut.

[0050] In a possible implementation, the connector 120 may be a cylindrical structure, and the first section 121, the second section 122, and the third section 123 are all cylindrical. The diameter of the first section 121 is greater than or equal to the diameter of the third section 123. The third section 123 is located on one side of the first section 121 along the positive direction of the first direction, the connector 120 passes through the accommodating cavity 111 along the first direction, at least part of the third section 123 passes out of the accommodating cavity 111, the second section 122 is located in the accommodating cavity 111, and the diameter of the third section 123 is less than or equal to the diameter of the first section 121, which can ensure that the connector 120 passes through the accommodating cavity 111 smoothly, reduce the resistance between the connector 120 and the accommodating cavity 111 when passing through the accommodating cavity 111, and thus facilitate the assembly between the connector 120 and the conductive member.

[0051] In a possible implementation, the inner wall surface 112 of the conductive member 110 and the outer wall surface 124 of the connector 120 are clearance-fitted or interference-fitted. The clearance-fitting and interference-fitting in the implementation of the present application are both based on the hole system.

[0052] In one embodiment, the inner wall surface 112 of the conductive member 110 is gap-fitted with the outer wall surface 124 of the connecting member 120, the inner wall surface of the conductive member 110 at one end in the opposite direction of X (close to the first section 121) can be gap-fitted with the outer wall surface 124 of the connecting member 120, or the inner wall surface of the conductive member 110 facing the second section 122 is gap-fitted with the outer wall surface of the connecting member 120 (the outer wall surface of the second section 122).

[0053] There is a gap between the inner wall surface 112 of the conductive part 110 and the outer wall surface 124 of the connecting part 120. The gap can absorb the dimensional error of the conductive part 110 and the connecting part 120 during the manufacturing and installation process, which is beneficial to the installation and disassembly of the conductive part 110 and the connecting part 120. In addition, it can also absorb the deformation of the conductive part 110 and the connecting part 120 that may be caused by temperature changes, reduce the stress caused by too tight fit, and extend the service life of the conductive part 110 and the connecting part 120.

[0054] In one embodiment, the inner wall surface 112 of the conductive member 110 is interference fit with the outer wall surface 124 of the connecting member 120, and the inner wall surface of the conductive member 110 at one end in the opposite direction of X (close to the first section 121) can be interference fit with the outer wall surface 124 of the connecting member 120, or the inner wall surface of the conductive member 110 facing the second section 122 is interference fit with the outer wall surface of the connecting member 120 (the outer wall surface of the second section 122). The inner wall surface 112 of the conductive member 110 is slightly larger than the outer wall surface 124 of the connecting member 120, so that a certain pressure is formed between the inner wall surface 112 of the conductive member 110 and the outer wall surface 124 of the connecting member 120. The interference fit between the inner wall surface 112 of the conductive member 110 and the outer wall surface 124 of the connecting member 120 can increase the bonding strength between the conductive member 110 and the connecting member 120, and prevent the conductive member 110 and the connecting member 120 from loosening and sliding. Interference fit may include, but is not limited to, smooth axis interference fit and knurling interference fit.

[0055] In one embodiment, the first section 121 and the third section 123 of the connecting member 120 are both provided with threads. When the first section 121 is assembled with the nut, the inner wall surface 112 of the conductive member 110 and the outer wall surface 124 of the connecting member 120 have an interference fit, which can provide a certain torque guarantee to ensure that the third section 123 is not affected when the nut assembled with the first section 121 is loosened.

[0056] In a possible implementation, a first anti-rotation portion 125 is provided on the connecting member 120 , and a matching portion 113 is provided on the inner wall surface 112 of the conductive member 110 . The matching portion 113 is matched and connected with the first anti-rotation portion 125 to limit the connecting member 120 from rotating relative to the conductive member 110 .

[0057] In a possible implementation manner, the first anti-rotation portion 125 includes a protrusion and / or a groove, and the matching portion 113 also includes a protrusion and / or a groove. 7A to 7C As shown, the connecting member 120 is provided with a first anti-rotation portion 125, which can be arranged on the outer wall surface 124 of the connecting member 120. Specifically, the first anti-rotation portion 125 can be arranged on the first section 121, the second section 122, or the third section 123. The first anti-rotation portion 125 is located in the accommodating cavity 111. In this embodiment, the first anti-rotation portion 125 can be a protrusion. Of course, in other possible embodiments, the first anti-rotation portion 125 can also be a groove or a combination of a protrusion and a groove. The inner wall surface 112 of the conductive member 110 is provided with a matching portion that matches the first anti-rotation portion 125. In this embodiment, the matching portion 113 may be a groove. Of course, in other possible embodiments, the matching portion 113 may also be a protrusion or a combination of a protrusion and a groove. The matching portion 113 may be matched and connected with the first anti-rotation portion 125 to prevent the connecting member 120 from rotating relative to the conductive member 110 when the connecting member 120 is fixedly installed with other structures, thereby ensuring that the relative position relationship between the connecting member 120 and the conductive member 110 is stable, and ultimately improving the overall stability of the conductive assembly 100. The number of the first anti-rotation portion 125 and the matching portion 113 may both be one.

[0058] In one possible embodiment, the connector 120 is cylindrical, the number of the first anti-rotation portions 125 is at least two, and at least two first anti-rotation portions 125 are spaced apart on the outer wall surface 124 of the connector 120 along the circumferential direction of the connector 120, and / or, the number of the mating portions 113 is at least two, and at least two mating portions 113 are spaced apart on the inner wall surface 112 of the conductive member 110 along the circumferential direction of the connector 120, which is beneficial to better ensure the stability of the relative position relationship between the connector 120 and the conductive member 110, and ultimately improve the overall stability of the conductive component 100.

[0059] In one embodiment, the number of the first anti-rotation parts 125 can be two, and the two first anti-rotation parts 125 are distributed on the outer wall surface 124 of the connecting member 120 at intervals along the circumferential direction of the connecting member 120, and the number of the matching parts 113 can be one, and the one matching part 113 is matched and connected with one of the two first anti-rotation parts 125.

[0060] In one embodiment, the number of the mating parts 113 can be three, and the three mating parts 113 are distributed on the inner wall surface 112 of the conductive part 110 at intervals along the circumferential direction of the connecting part 120. The number of the first anti-rotation part 125 can be one, and one first anti-rotation part 125 is matingly connected to one of the three mating parts 113.

[0061] In one embodiment, the number of the first anti-rotation parts 125 can be two, and the two first anti-rotation parts 125 are distributed on the outer wall surface 124 of the connecting member 120 at intervals along the circumferential direction of the connecting member 120. The number of the matching parts 113 can be two, and the two matching parts 113 are distributed on the inner wall surface 112 of the conductive member 110 at intervals along the circumferential direction of the connecting member 120, and the two first anti-rotation parts 125 are respectively matched and connected with the two matching parts 113.

[0062] It is understandable that there may be many other situations in terms of the number and positional relationship of the first anti-rotation portion 125 and the matching portion 113 , which will not be listed one by one in this application.

[0063] In a possible embodiment, the conductive member 110 is made of at least one of copper and its alloys, aluminum and its alloys, or nickel and its alloys. For example, the conductive member 110 can be made of copper materials such as red copper, brass, bronze, nickel silver or other copper alloys. The conductive member 110 made of copper and its alloys has good electrical conductivity, which is beneficial to improving the electrical connection effect with the battery pack. The conductive member 110 has a receiving cavity 111 that passes through the conductive member 110. The receiving cavity 111 passes through the conductive member 110 along a first direction, and the first direction can be any direction. In the embodiment of the present application, the first direction is taken as the X direction for example.

[0064] In a possible implementation, the material of the connector is at least one of stainless steel, carbon steel or alloy steel. Stainless steel, carbon steel or alloy steel has good tensile properties. The connector 120 is made of stainless steel, carbon steel or alloy steel. The steel has high tensile strength, which can ensure that the connector 120 is not easily deformed or even broken when it is installed with other fixing parts or subjected to strong external forces.

[0065] In a possible implementation, a limiting portion 140 is disposed between the first section 121 and the second section 122 , and the conductive member 110 includes an abutting surface 114 , and the abutting surface 114 and the limiting portion 140 are in abutment with each other.

[0066] See also Figure 6As shown, a limiting portion 140 is provided between the first section 121 and the second section 122. The limiting portion 140 may be located inside the accommodating cavity 111 or outside the accommodating cavity 111, or may be partially located inside the accommodating cavity 111 and partially located outside the accommodating cavity 111. The limiting portion 140 may include a flange, which may be fixedly connected between the first section 121 and the second section 122 by welding or bonding, or the flange may be obtained by an integral molding design with the connector 120. The wall surface of the conductive member 110 includes an abutting surface 114, which may be an outer wall surface of the conductive member 110 or an inner wall surface of the conductive member 110. The limiting portion 140 has an outer wall surface, and the outer wall surface of the limiting portion 140 may abut against the abutting surface 114 to limit the position of the connector 120 passing through the accommodating cavity 111 along the first direction to be assembled with the conductive member 110, so as to avoid position deviation during the assembly process of the connector 120 and the conductive member 110.

[0067] In this embodiment, the limiting portion 140 is completely located in the accommodating cavity 111, the abutting surface 114 is the inner wall surface 112 of the conductive member 110, and the limiting portion 140 abuts against the abutting surface 114 along the first direction toward the outer wall surface of the second section 122 to limit the assembly position of the connecting member 120 and the conductive member 110.

[0068] Of course, in other possible embodiments, see Figure 8 As shown, the limiting portion 140 may be partially located outside the accommodating cavity 111, see Fig. 9 As shown, the limiting portion 140 is completely located outside the accommodating cavity 111, and the abutting surface 114 is the outer wall surface of the conductive member 110 along the first direction toward the first section 121. The limiting portion 140 along the first direction toward the outer wall surface of the second section 122 abuts against the abutting surface 114 to limit the assembly position of the connecting member 120 and the conductive member 110.

[0069] In a possible implementation, the conductive component 100 further includes a sealing structure 130, which is located in the accommodating cavity 111, and the sealing structure 130 seals and connects the inner wall surface 112 of the conductive component 110 and the outer wall surface of the limiting portion 140. Figure 6 As shown, the sealing structure 130 and the limiting portion 140 are both located in the accommodating cavity 111, the sealing structure 130 is located on the outside of the limiting portion 140, the inner wall surface of the sealing structure 130 is connected to the outer wall surface of the limiting portion 140, the outer wall surface of the sealing structure 130 is connected to the inner wall surface 112 of the conductive member 110, and the sealing structure 130 seals and connects the inner wall surface 112 of the conductive member 110 with the outer wall surface of the limiting portion 140, which can more effectively prevent external impurities such as liquid, gas or dust from entering the accommodating cavity 111, thereby protecting the safety of the battery pack 200.

[0070] In a possible implementation, a first thread is provided on the outer wall surface of the first section 121, and a second thread is provided on the outer wall surface of the third section 123, and the first thread and the second thread have the same rotation direction. The first thread is used to be fixedly connected to the structure outside the battery pack. The second thread is used to be fixedly connected to the structure inside the battery pack. The first thread and the second thread both have threads, and the first thread and the second thread have the same rotation direction.

[0071] For example, when the conductive component 100 is assembled, the third section 123 located inside the battery pack 200 is installed first, and the second thread on the third section 123 can be fixedly installed with a nut. Fig.10 The second torque direction F2 in the battery pack is tightened with the third section 123 (second bolt). Then the first thread on the first section 121 outside the battery pack can be fixedly installed with the nut. The nut is fixedly installed with the nut according to Fig.11 The first torque direction F1 in the battery pack is tightened with the first section 121 (first thread), and the first thread and the second thread have the same rotation direction. The first torque direction F1 drives the first section 121 to rotate in a direction (or tendency) and can further drive the third section 123 to rotate, thereby tightening the nut and the second thread on the inside of the battery pack. When the first thread and nut on the outside of the battery pack are tightened, the tightening effect of the second bolt and nut on the inside of the battery pack will be enhanced.

[0072] In one possible implementation, see Figure 1 , Figure 2 , Fig.10 and Fig.11 As shown, a second anti-rotation portion 150 is provided at one end of the first section 121 away from the second section 122, and the second anti-rotation portion 150 is used to cooperate with the tightening tool 20 for connection. The second anti-rotation portion 150 is used to be inserted into the tightening tool 20 and abut against the inner wall surface of the tightening tool 20 to limit the rotation of the connecting member 120 relative to the conductive member 110.

[0073] The second anti-rotation part 150 can be a protrusion or a groove or a combination of a protrusion and a groove. The second anti-rotation part 150 is used to cooperate with the tightening tool 20. The tightening tool 20 is provided with a structure that cooperates with the second anti-rotation part 150. When the third section 123 located on the inner side of the battery pack is fixedly installed, the first section 121 is first placed in the tightening tool 20. The second anti-rotation part 150 cooperates with the tightening tool 20 to perform anti-rotation limiting to prevent the connector 120 from rotating in the accommodating cavity 111 of the conductive member 110 when the third section 123 is fixedly installed.

[0074] The number of the second anti-rotation parts 150 may be at least one. When the number of the second anti-rotation parts 150 is greater than one, at least two second anti-rotation parts 150 are spaced apart along the circumferential direction of the first section 121. For example, the number of the second anti-rotation parts 150 may be six, and the six second anti-rotation parts 150 are spaced apart along the circumferential direction of the first section 121 on the first section 121 to form a plum blossom-like anti-rotation structure. The number of the second anti-rotation parts 150 is at least two, and at least two second anti-rotation parts 150 can cooperate with the tightening tool 20 to better prevent rotation and limit.

[0075] The present application also provides a battery pack assembly 10, see Fig.12 As shown, the battery pack assembly 10 includes the conductive assembly 100 described in any one of the above items of the battery pack 200, the conductive assembly 100 is electrically connected to the battery pack 200, and the conductive assembly 100 is used to electrically connect the battery pack 200 and the electrical equipment. The battery pack assembly 10 can be applied to, including but not limited to, the field of new energy vehicles. The battery pack 200 can be a lithium-ion battery pack. The battery pack 200 has a battery pack shell, a positive electrode column and a negative electrode column. A panel cover is provided outside the battery pack shell, and the panel cover covers the outside of the battery pack shell provided with the positive electrode column and the negative electrode column, and the panel cover is fixedly connected to the battery pack tray. Part of the conductive assembly 100 is buried in the panel cover, and the conductive assembly 100 can have two, and the conductive members 110 of the two conductive assemblies 100 can be electrically connected to the positive electrode column and the negative electrode column respectively, and the connector 120 can be fixedly connected with other structures, and the conductive assembly 100 is fixed with other structures, so that the conductive assembly 100 can output the voltage of the battery pack 200.

[0076] The battery pack assembly 10 provided in the present application is electrically connected through the conductive member 110 of the conductive assembly 100, and is fixedly connected through the connector 120 of the conductive assembly 100. The conductive member 110 and the connector 120 are two independent structures. The conductive member 110 and the connector 120 can be designed accordingly according to different usage scenarios and requirements, so that the conductive assembly has better flexibility when in use, which is more conducive to the conductive assembly 100 transmitting the voltage of the battery pack 200 to other electrical equipment.

[0077] In a possible embodiment, the battery pack assembly 10 also includes a conductive terminal 300 and a fixing member 160, the fixing member 160 is connected to the connecting member 120 to fix one end of the conductive terminal 300 between the fixing member 160 and the conductive member 110, one end of the conductive terminal 300 is electrically connected to the conductive member 110, and the other end of the conductive terminal 300 is electrically connected to the pole of the battery pack 200.

[0078] The conductive terminal 300 is used to be electrically connected to the conductive member 110, and the connecting member 120 is used to be fixedly connected to the conductive terminal 300. There may be two conductive terminals 300, and the two ends of the conductive member 110 along the penetrating direction of the accommodating cavity 111 are electrically connected to the conductive terminals 300 respectively. Fig.12 As shown, in this embodiment, the fixing member 160 may be a nut, and threads may be provided on the outer wall surfaces of the first section 121 and the third section 123. Specifically, on the inner side of the battery pack 200, the third section 123 is fixedly connected to the conductive terminal 300 through the nut, and the third section 123 and the nut thread cooperate to fix one end of the conductive terminal 300 between the end of the conductive member 110 along the penetrating direction of the accommodating cavity 111 and the nut, and one end of the conductive terminal 300 contacts the conductive member 110 to realize the electrical connection between the conductive terminal 300 and the conductive member 110. The other end of the conductive terminal 300 is electrically connected to the positive electrode column or the negative electrode column of the battery pack 200.

[0079] On the outside of the battery pack 200, the first section 121 is fixedly connected to the conductive terminal 300 through a nut, and the first section 121 and the nut are threadedly matched to fix one end of the conductive terminal 300 between the end of the conductive member 110 along the first direction and the nut, thereby realizing the electrical connection between the conductive terminal 300 and the conductive member 110. The other end of the conductive terminal 300 can be electrically connected to other electrical devices, and the voltage of the battery pack 200 is transmitted to the electrical devices through the conductive terminal and the conductive component.

[0080] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A conductive component for electrically connecting a battery pack to an electrical device, characterized in that: include: Conductive parts; The connecting member is designed to be separated from the conductive member, and at least part of the conductive member is sleeved on the connecting member. One side of the connecting member is used to connect to the battery pack, and the other side of the connecting member is used to connect to the electrical equipment.

2. The conductive component according to claim 1, characterized in that: The conductive member has a receiving cavity penetrating the conductive member, and the conductive assembly further includes a sealing structure, which is located in the receiving cavity and seals and connects the inner wall surface of the conductive member and the outer wall surface of the connecting member.

3. The conductive component according to claim 2, characterized in that: The connecting member includes a first section, a second section and a third section which are arranged adjacent to each other in sequence, the second section is located in the accommodating cavity, at least part of the first section and at least part of the third section are located outside the accommodating cavity, the first section is used to connect to the electrical equipment, and the third section is used to connect to the battery pack.

4. The conductive component according to claim 3, characterized in that: The connecting piece is in a cylindrical structure, and the diameter of the first section is greater than or equal to the diameter of the third section.

5. The conductive component according to any one of claims 1 to 4, characterized in that: The inner wall surface of the conductive member and the outer wall surface of the connecting member are clearance-fitted or interference-fitted.

6. The conductive component according to any one of claims 1 to 4, characterized in that: The connecting member is provided with a first anti-rotation portion, and the inner wall surface of the conductive member is provided with a matching portion, and the matching portion is matched and connected with the first anti-rotation portion to limit the connecting member from rotating relative to the conductive member.

7. The conductive component according to claim 6, characterized in that: The first anti-rotation portion includes a protrusion and / or a groove, and the matching portion includes a protrusion and / or a groove.

8. The conductive component according to claim 6, characterized in that: The connecting piece is cylindrical, the number of the first anti-rotation parts is at least two and the at least two first anti-rotation parts are spaced apart on the outer wall surface of the connecting piece along the circumferential direction of the connecting piece, and / or the number of the matching parts is at least two and the at least two matching parts are spaced apart on the inner wall surface of the conductive piece along the circumferential direction of the connecting piece.

9. The conductive component according to any one of claims 1 to 4, characterized in that: The conductive member is made of at least one of copper and its alloys, aluminum and its alloys, or nickel and its alloys.

10. The conductive component according to any one of claims 1 to 4, characterized in that: The connecting piece is made of at least one of stainless steel, carbon steel or alloy steel.

11. The conductive component according to claim 3 or 4, characterized in that: A limiting portion is provided between the first section and the second section, and the conductive member includes a contact surface, and the contact surface and the limiting portion are in contact with each other.

12. The conductive component according to claim 11, characterized in that: The sealing structure seals and connects the inner wall surface of the conductive member and the outer wall surface of the limiting portion.

13. The conductive component according to claim 3 or 4, characterized in that: A first thread is disposed on the outer wall surface of the first section, and a second thread is disposed on the outer wall surface of the third section. The first thread and the second thread have the same rotation direction.

14. The conductive component according to claim 3 or 4, characterized in that: A second anti-rotation portion is provided at one end of the first section away from the third section, and the second anti-rotation portion is used to be inserted into the tightening tool and abut against the inner wall surface of the tightening tool to limit the connection member from rotating relative to the conductive member.

15. A battery pack assembly, characterized in that: It comprises a battery pack and the conductive component according to any one of claims 1 to 14, wherein the conductive component is electrically connected to the battery pack, and the conductive component is used to electrically connect the battery pack and the electrical device.

16. The battery pack assembly according to claim 15, characterized in that: The battery pack assembly also includes a conductive terminal and a fixing member, wherein the fixing member is connected to the connecting member to fix one end of the conductive terminal between the fixing member and the conductive member, one end of the conductive terminal is electrically connected to the conductive member, and the other end of the conductive terminal is electrically connected to the pole of the battery pack.

Images