Electrode structure, battery and electric equipment
By adopting a combined structure of conductive parts and connectors in the battery system and using the dual fixation method of threads and adhesives, the problems of loose electrode structure connections and poor airtightness in the existing battery system are solved, and more stable electrode connections and higher airtightness are achieved.
Patent Information
- Application Number
- CN202420380618.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The positive and negative electrode output structures of existing low-voltage battery systems have problems such as poor overcurrent capability, large internal resistance, large volume and weight, loose connections and poor airtightness.
A combined structure of conductive parts and connectors is adopted, wherein the conductive parts are used for fixed connection with the battery housing, the connectors are placed in the threaded holes of the conductive parts, and an adhesive is provided between the two to achieve a firm and good conductivity electrode structure.
With this structure, the torque attenuation between the connecting member and the conductive member is reduced, and the stability of the fixed connection is high, avoiding shaking and airtight failure caused by the insolid connection of the electrode structure.
Smart Images
Figure CN222654258U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of lithium batteries, and in particular to an electrode structure, a battery and an electrical device. Background Art
[0002] In the related art, the positive and negative output structures of some low-voltage battery systems (here referring to U≤60V) use integrated steel poles, and some positive and negative output structures use copper poles or aluminum poles riveted steel screws. Among them, the integrated steel poles have defects such as poor current capacity, large internal resistance, and large volume and weight; and the copper pole riveted steel screws and aluminum pole riveted steel screws have the problem that multiple disassembly and installation may cause looseness and poor airtightness, leading to connection failure. Utility Model Content
[0003] The purpose of the present disclosure is to provide an electrode structure, a battery and an electrical device, wherein the electrode structure has a firm connection and good conductivity, so as to at least partially solve the above technical problems.
[0004] In order to achieve the above-mentioned purpose, the present disclosure provides an electrode structure, including: a conductive member and a connecting member, wherein the conductive member is used to be fixedly connected to the outer shell of the battery, a threaded hole is provided in the conductive member, the connecting member is inserted into the threaded hole and threadedly connected to the conductive member, and a first adhesive is also provided between the threaded hole and the connecting member.
[0005] Optionally, the conductive member is a copper pole; and the connecting member is a steel screw.
[0006] Optionally, a conductive connecting surface is arranged at the top of the conductive member and around the outer periphery of the threaded hole.
[0007] Optionally, a first anti-rotation portion is provided on the conductive member, and the first anti-rotation portion is used to cooperate with a battery housing to limit the rotation of the conductive member.
[0008] Optionally, the first anti-rotation portion includes a first cross section, which is tangent to an outer circumference of the conductive component and extends in a direction away from the conductive connecting surface.
[0009] Optionally, the first anti-rotation portion further includes an anti-rotation tooth, and the anti-rotation tooth is arranged on the outer periphery of the conductive component.
[0010] Optionally, a limiting portion is further provided on the conductive member, and the limiting portion is used to cooperate with the outer shell of the battery to limit the relative movement of the conductive member and the outer shell.
[0011] Optionally, the limiting portion is configured as a first groove that is concave toward the central axis of the conductive member, or the limiting portion is configured as a protrusion that is convex away from the central axis of the conductive member.
[0012] Optionally, an operating portion is provided at the first end of the connecting member; and / or a second anti-rotation portion is provided at the second end of the connecting member.
[0013] Optionally, a storage portion is provided on the connecting member, and the storage portion is used to store the first adhesive.
[0014] Optionally, the threaded hole is any one of a countersunk hole, a through hole or a blind hole.
[0015] Optionally, at least part of the thread of the connecting member extends to the outside of the conductive member.
[0016] A second aspect of the present disclosure provides a battery, a shell and the above-mentioned electrode structure, wherein the shell is provided with a mounting groove, and the conductive member in the electrode structure is pre-embedded and installed in the mounting groove.
[0017] Optionally, the conductive member is sealed and fixedly connected to the housing.
[0018] Optionally, a second adhesive is provided between the conductive member and the mounting groove.
[0019] A third aspect of the present disclosure provides an electrical device, comprising the above-mentioned battery.
[0020] Through the above technical scheme, the conductive part in the electrode structure is sealed and fixedly connected to the battery shell, electricity is transmitted through the conductive part, the connecting part is inserted into the threaded countersunk hole of the conductive part and a first adhesive is arranged between the connecting part and the threaded countersunk hole, so that the connecting part can be fixedly connected to the conductive part by threads and bonding, the torsional attenuation between the connecting part and the conductive part is small, and the stability of the fixed connection between the connecting part and the conductive part is high.
[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0023] Figure 1 is a schematic structural diagram of a battery provided at a first angle in an exemplary embodiment of the present disclosure;
[0024] Figure 2 yes Figure 1 A partial enlarged structural diagram of the middle part;
[0025] Figure 3 yes Figure 1 Schematic diagram of the explosion structure of the local conductive parts and connecting parts in the middle A part;
[0026] Figure 4 yes Figure 1 A partial cross-sectional schematic diagram of the local conductive parts and connecting parts in the middle A part;
[0027] Figure 5 is a second angle structural schematic diagram of a battery liquid injection device provided in an exemplary embodiment of the present disclosure;
[0028] Figure 6 2 is a schematic diagram of the structure of the battery liquid filling device provided in an exemplary embodiment of the present disclosure from a second angle.
[0029] Description of Reference Numerals
[0030] 1-conductive part; 11-threaded hole; 12-conductive connecting surface; 13-first cross section; 14-limiting part; 15-anti-rotation tooth; 2-connecting part; 21-operating part; 22-second anti-rotation part; 23-storage part; 3-housing; 31-installation groove; 4-first adhesive. DETAILED DESCRIPTION
[0031] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0032] In the present disclosure, unless otherwise stated, the directional words used, such as "upper, lower, left, right", are generally defined by the use state of the electrode structure. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0033] like Figure 1-Figure 6 As shown, the first aspect of the present disclosure provides an electrode structure, including: a conductive member 1 and a connecting member 2, the conductive member 1 is used to be fixedly connected to the battery housing 3, a threaded hole 11 is provided in the conductive member 1, the connecting member 2 is inserted into the threaded hole 11 and is threadedly connected to the conductive member 1, and a first adhesive 4 is also provided between the threaded hole 11 and the connecting member 2.
[0034] Through the above technical solution, the conductive member 1 in the electrode structure is fixedly connected to the battery housing 3, power is transmitted through the conductive member 1, the connecting member 2 is inserted into the threaded hole 11 of the conductive member 1 and a first adhesive 4 is arranged between the connecting member 2 and the threaded hole 11, so that the connecting member 2 can be used simultaneously by both threading and gluing to make the connecting member 2 and the conductive member 1 fixedly connected. The above two methods are used simultaneously to reduce the torque attenuation of the connecting member 2 and the conductive member 1, and the stability of the fixed connection between the connecting member 2 and the conductive member 1 is high.
[0035] It can be understood that the conductive part 1 is constructed as a copper pole and the connecting part 2 is constructed as a steel screw. The copper pole is used to output the electric energy required to be output from the battery through the copper pole and transmit it to the required position of the whole vehicle; the steel screw is used to connect and fix the conductive wiring harness at the whole vehicle end with the conductive part of the battery pack. The copper pole can be pre-buried in the plastic shell by an injection molding process. The threaded hole 11 extends from the top of the copper pole toward the bottom of the copper pole. The threaded hole 11 can be opened on the copper pole by machining, wherein the threaded hole 11 can be any one of a countersunk hole, a through hole or a blind hole. In this embodiment, the threaded hole 11 can be a threaded countersunk hole. The shell 3 can be a plastic shell, and battery system components, such as a battery control system, structural parts, wiring harness, etc., are installed inside.
[0036] In order to make the copper pole fixedly connected to the housing 3, in some practicable ways, such as Figure 4 As shown, the housing 3 is provided with a mounting groove 31, and the copper pole is pre-embedded and installed in the mounting groove 31. The mounting groove 31 can also be constructed as a pre-embedded countersunk hole, so that the copper pole can be fixedly connected to the housing 3 by pre-embedded means.
[0037] In addition, in order to further ensure that the copper pole is firmly connected to the shell 3 and sealed, in some feasible methods, a second adhesive is provided between the copper pole and the mounting groove 31, so that the copper pole is fixed in the mounting groove 31 by the second adhesive. When the glue solidifies, the copper pole is fixed in the shell 3, thereby achieving a fixed and sealed connection between the copper pole and the shell 3.
[0038] In order to facilitate the transmission of electricity by the electrodes, in some practicable embodiments, a conductive connection surface 12 is provided at the top of the conductive member 1 and around the outer periphery of the threaded hole 11 , and the battery is electrically connected to external components through the conductive connection surface 12 .
[0039] In order to prevent the conductive member 1 from rotating when being fixedly connected to the housing 3, in some practicable manners, such as Figure 1-Figure 5 As shown, the conductive member 1 is provided with a first anti-rotation portion, and the first anti-rotation portion is used to cooperate with the battery housing 3 to limit the rotation of the conductive member 1. For example, the first anti-rotation portion includes a first section 13, the first section 13 is tangent to the outer periphery of the conductive member 1 and extends in a direction away from the conductive connection surface 12, wherein the conductive member 1 can be a copper pole, and the first section 13 is perpendicular to the conductive connection surface 12 and connected to the conductive connection surface 12 to form a rectangular surface, so that during the pre-embedding process, due to the setting of the first section 13, the anti-torsion capacity of the top of the copper pole is increased, and the copper pole is prevented from falling, rotating or shaking when the copper pole is installed or disassembled with the steel screw, and the rotation of the circular copper pole is avoided to reduce the air tightness.
[0040] In order to further strengthen the fixed sealing connection between the housing 3 and the copper pole, as Figure 1-Figure 5As shown, a limiting portion 14 is also provided on the conductive member 1, wherein the limiting portion 14 can be constructed as a first groove concave toward the central axis of the conductive member 1 or the limiting portion 14 can be constructed as a protrusion convex away from the central axis of the conductive member 1. In the present embodiment, the limiting portion 14 is constructed as a first groove, and the first groove cooperates with the battery shell 3, which can not only provide a holding space for the second adhesive, but also enable the first groove and the battery shell 3 to form a clamping structure during pre-embedding, thereby limiting the relative movement of the conductive member 1 and the shell 3. Of course, there can be multiple limiting portions 14. The provision of multiple limiting portions 14 can enable the second adhesive to flow fully during use, increase the contact area between the shell 3 and the copper pole, and enable the copper pole to be firmly and sealedly fixed to the shell 3.
[0041] In order to improve the anti-rotation capability of the copper pole when connected to the housing 3, in some practicable ways, such as Figure 1-Figure 5 As shown, the first anti-rotation portion also includes an anti-rotation tooth 15, which is arranged on the outer periphery of the conductive member 1, and the first groove is arranged in the middle of the conductive member 1. There are two anti-rotation teeth 15, which are respectively located on both sides of the first groove. The anti-rotation teeth 15 are arranged circumferentially along the rotation center line of the limiting portion 14, and the anti-rotation teeth 15 extend along the rotation center line direction, so that when the copper pole is connected to the shell 3, the anti-rotation teeth 15 increase the contact area with the shell 3 and enable more second adhesive to be placed in the anti-rotation teeth 15, so that the copper pole is fixedly sealed and connected to the shell 3. It can be understood that the position and number of the anti-rotation teeth 15 are schematic, and in other embodiments, they can also be arbitrarily selected according to specific working conditions, and the present disclosure does not make specific limitations.
[0042] In order to facilitate the threaded connection between the connecting member 2 and the conductive member 1, in some practicable ways, such as Figure 1-Figure 4 and Figure 6As shown, the first end of the connector 2 is provided with an operating portion 21, and / or the second end of the connector 2 is provided with a second anti-rotation portion 22. Among them, the conductive member 1 still uses a copper pole, the connector 2 uses a steel screw, and an external thread that matches the threaded countersunk hole 11 is provided on the outer periphery of the connector 2. The operating portion 21 can be set on the top surface of the steel screw and the projection on the horizontal plane can be a regular hexagon. In this way, the operating portion 21 can be matched with an inner hexagon wrench so that the steel screw can be threadedly connected with the threaded countersunk hole 11 of the copper pole. It can be understood that the structure in which the projection of the operating portion 21 on the horizontal plane is a regular hexagon is schematic, and in other embodiments, it can also be other shapes, for example, it can also be a regular quadrilateral. In addition, in order to prevent the steel screw from rotating when it is fixedly and sealedly connected to the copper pole, a second anti-rotation portion 22 is further provided on the bottom surface of the steel screw. There are multiple second anti-rotation portions 22 which are connected end to end. The projection of the multiple second anti-rotation portions 22 on the horizontal plane can be a quadrilateral. When the steel screw is fixedly connected to the copper pole by threads and the first adhesive, the adhesive can cover the second anti-rotation portion 22 and extend into the threads, thereby enabling the steel screw to be firmly connected to the copper pole and enhancing the anti-twisting ability of the steel screw itself.
[0043] In some practicable embodiments, in order to firmly connect the steel screw rod to the copper pole and prevent the first adhesive from overflowing, as Figure 6 As shown, the storage portion 23 is constructed as a second groove that is concave toward the central axis of the connector 2. The second groove can form a glue storage point between the threaded countersunk hole 11 of the copper pole, so that when the steel screw thread rotates, the first adhesive is placed in the threaded countersunk hole 11, and the steel screw is threadedly connected to the threaded countersunk hole 1 to fill the first adhesive from the bottom upward along the thread gap, so that the steel screw can be fixedly connected to the copper pole by threaded connection and adhesive connection, and at the same time, the excess first adhesive can be stored in the second groove, so that the first adhesive can be prevented from overflowing to the copper pole and affecting the conductivity of the electrode structure. It can be understood that the above-mentioned storage portion 23 is constructed as a second groove for schematic purposes. In other embodiments, multiple liquid storage holes can also be provided on the steel screw to store excess second adhesive. Of course, the number of storage portions 23 can be arbitrary and is selected according to specific working conditions. The present disclosure does not limit the number.
[0044] In some feasible embodiments, at least part of the threads of the connector 2 extend to the outside of the conductive member. In this way, the connector 2 and the conductive member 1 can always be threadedly connected, so that the connector 2 is stably connected to the conductive member 1. The operating part 21 can also be placed outside the conductive member 1 to facilitate external tools to cooperate with the operating part 21 to tighten the connector 2 and the conductive member 1.
[0045] The second aspect of the present disclosure provides a battery, a shell 3 and the above-mentioned electrode structure, wherein the shell 3 is provided with a mounting groove 31, and the conductive member 1 in the electrode structure is pre-embedded and installed in the mounting groove 31. In this way, the conductive member 1 can be pre-embedded and fixedly connected to the shell 3 by the provision of the mounting groove 31. In order to further ensure that the conductive member 1 is firmly connected to the shell 3, in some practicable embodiments, a second adhesive is provided between the conductive member 1 and the mounting groove 31. Thus, the conductive member 1 in the motor structure can be pre-embedded and installed in the mounting groove 31 of the shell 3 by both the second adhesive and the threaded connection. In this way, the conductive member 1 can be firmly and hermetically connected to the shell 3, thereby avoiding the failure of airtightness caused by the loosening of the conductive member 1, so as to make the battery more stable.
[0046] The third aspect of the present disclosure provides an electrical device, including the above-mentioned battery. The electrical device may be a vehicle, and the vehicle may include a pure electric vehicle or a hybrid vehicle. The conductive part 1 in the above-mentioned battery is stably embedded and fixed in the housing 3 through threads and the second adhesive, and the connecting part 2 is stably fixedly connected to the threaded countersunk hole 11 of the conductive part 1 through threads and the first adhesive, thereby avoiding shaking due to loose connection of the electrode mechanism, resulting in unstable transmission and poor sealing of the electrode mechanism, thereby affecting the normal operation of the battery and further affecting the performance of the vehicle. It can be understood that the above-mentioned electrical device is a vehicle for illustration only. In other embodiments, the electrical device may also be other devices, and the disclosure does not specifically limit the electrical device.
[0047] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0049] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. An electrode structure, characterized in that: include: A conductive member and a connecting member, wherein the conductive member is used for fixed connection with the battery shell, a threaded hole is provided in the conductive member, the connecting member is inserted into the threaded hole and is threadedly connected with the conductive member, and a first adhesive is also provided between the threaded hole and the connecting member.
2. The electrode structure according to claim 1, characterized in that: The conductive member is configured as a copper pole; The connecting element is designed as a steel screw.
3. The electrode structure according to claim 2, characterized in that: A conductive connection surface is arranged at the top of the conductive member and around the outer periphery of the threaded hole.
4. The electrode structure according to claim 3, characterized in that: The conductive member is provided with a first anti-rotation portion, and the first anti-rotation portion is used to cooperate with the battery shell to limit the rotation of the conductive member.
5. The electrode structure according to claim 4, characterized in that: The first anti-rotation portion includes a first cross section, which is tangent to the outer circumference of the conductive component and extends in a direction away from the conductive connection surface.
6. The electrode structure according to claim 4, characterized in that: The first anti-rotation portion further includes an anti-rotation tooth, and the anti-rotation tooth is arranged on the outer periphery of the conductive member.
7. The electrode structure according to claim 2, characterized in that: The conductive member is also provided with a limiting portion, and the limiting portion is used to cooperate with the outer shell of the battery to limit the relative movement of the conductive member and the outer shell.
8. The electrode structure according to claim 7, characterized in that: The limiting portion is configured as a first groove that is concave toward the central axis of the conductive member, or the limiting portion is configured as a protrusion that is convex away from the central axis of the conductive member.
9. The electrode structure according to any one of claims 1 to 8, characterized in that: The first end of the connecting member is provided with an operating portion; and / or The second end of the connecting member is provided with a second anti-rotation portion.
10. The electrode structure according to claim 9, characterized in that: A storage portion is provided on the connecting member, and the storage portion is used to store the first adhesive.
11. The electrode structure according to claim 10, characterized in that: The storage portion is configured as a second groove that is recessed toward the central axis of the connecting member.
12. The electrode structure according to claim 1, characterized in that: The threaded hole is any one of a countersunk hole, a through hole or a blind hole.
13. The electrode structure according to claim 1, characterized in that: At least a portion of the threads of the connecting member extend to the outside of the conductive member.
14. A battery, characterized in that: It comprises a shell and the electrode structure according to any one of claims 1 to 13, wherein the shell is provided with a mounting groove, and the conductive member in the electrode structure is pre-embedded and installed in the mounting groove.
15. The battery according to claim 14, characterized in that The conductive member is sealed and fixedly connected to the housing.
16. The battery according to claim 14, characterized in that A second adhesive is provided between the conductive member and the mounting groove.
17. An electrical equipment, characterized in that: A battery comprising any one of claims 14 to 16.