A battery output structure and a battery structure

Abstract

This invention discloses a battery output structure and a battery structure. The battery output structure is used to connect a battery cell to an external circuit. It includes a battery management system and a top cover. The battery management system includes a connection side and an output side. The connection side is electrically connected to the battery cell. The output side is provided with a pin-type connection component for electrically connecting to an external circuit. The top cover is disposed on the output side and is fitted to the outer extension of the battery management system to form a sealed space. The top cover extends outward along the extension direction of the pin-type connection component to form a sleeve structure. The sleeve structure connects the sealed space and the outside. The pin-type connection component passes through the sleeve structure. This invention aims to solve the technical problems of complex battery output structures and poor sealing performance in the prior art.

Description

Technical Field

[0001] This invention relates to the field of low-voltage new energy battery technology, specifically to a battery output structure and a battery structure. Background Technology

[0002] Batteries are widely used in various electronic devices, power tools, and electric vehicles. To improve battery safety and stability, a battery management system (BMS) is typically installed inside the battery. This system monitors and manages parameters such as voltage and temperature of the battery cells and establishes an electrical connection between the battery and external circuits through an output interface. Therefore, the output structure between the BMS and external circuits is a crucial component of battery structure design.

[0003] In existing technologies, battery management systems are typically housed inside the battery casing, with their output terminals connected to external circuits via wires, connectors, and other components. The casing or top cover usually requires an opening structure, along with seals, connectors, or waterproofing components to achieve electrical connection and sealing protection. However, this output structure is typically composed of multiple parts, resulting in a complex overall structure. This not only increases assembly difficulty and manufacturing costs but also easily creates multiple weak sealing areas where connectors protrude from the casing, leading to poor overall battery sealing performance.

[0004] Therefore, optimizing the battery output structure to make it simpler and more well-sealed, so as to achieve a reliable connection between the battery management system and the external circuit, improve the sealing reliability of the battery output position and enhance assembly stability, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a battery output structure and battery structure to solve the technical problems of complex battery output structures and poor sealing performance in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a battery output structure for connecting a battery cell to an external circuit, comprising: a battery management system including a connection side and an output side, the connection side being electrically connected to the battery cell, the output side being provided with a pin-type connection component for electrically connecting to an external circuit; and a top cover disposed on the output side and fitted to the outer extension of the battery management system to form a sealed space, the top cover extending outward along the extending direction of the pin-type connection component to form a sleeve structure, the sleeve structure communicating with the sealed space and the outside, the pin-type connection component being inserted into the sleeve structure.

[0007] In some embodiments, the top cover is provided with a positioning post, and the battery management system is provided with a positioning hole that cooperates with the positioning post. The positioning post passes through the positioning hole to achieve positioning between the battery management system and the top cover.

[0008] In some embodiments, multiple positioning posts are provided and spaced apart in the battery management system, with each positioning post passing through a corresponding positioning hole.

[0009] In some embodiments, a guide is fitted at the opening of the sleeve structure near the pin connector assembly, and the opening formed by the guide gradually decreases along the extension direction of the pin connector assembly.

[0010] In some embodiments, the end of the pin connector in its extension direction is not higher than the edge of the sleeve structure.

[0011] In some embodiments, there is a gap between the inner wall of the sleeve structure and the pin-type connection assembly.

[0012] In some embodiments, the pin-type connector assembly includes a plurality of connector pins spaced apart.

[0013] Secondly, the present invention also provides a battery structure, including a housing, a battery cell, and the aforementioned battery output structure. The top cover is fixedly connected to the housing, and the battery cell and the battery management system are both disposed inside the housing, with the battery cell and the battery management system being electrically connected.

[0014] In some embodiments, the housing is provided with a locking part, and the top cover is provided with a locking part that cooperates with the locking part. The locking part and the locking part are engaged to position the top cover and the housing.

[0015] In some embodiments, a seal is provided between the housing and the top cover, and the seal is located at the joint between the housing and the top cover.

[0016] Compared with existing technologies, the battery output structure and battery structure provided by this invention centralize the output path between the battery cell and the external circuit on one side of the battery management system. It connects to the external connector via a pin-type connection assembly, thereby reducing structural steps such as wire leads or terminal penetrations, lowering structural complexity and the number of components, resulting in a simpler battery output structure. Simultaneously, this application provides a sleeve structure on the top cover extending along the pin-type connection assembly, with electrical connections completed inside the sleeve structure. This prevents the pin-type connection assembly from being directly exposed to the external environment, avoiding weak sealing points at the pin-type connection assembly penetration points. This effectively reduces the risk of external moisture or dust entering the battery, improves the sealing reliability of the battery output position, and enhances the overall structure's environmental adaptability. Attached Figure Description

[0017] Figure 1This is an exploded view of a battery output structure provided in an embodiment of the present invention; Figure 2 This is an exploded view of a battery structure provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 10. Battery Management System; 11. Connection Side; 12. Output Side; 13. Pin Connection Assembly; 131. Connection Pin; 14. Positioning Hole; 20. Top Cover; 21. Sleeve Structure; 22. Positioning Post; 23. Snap-fit ​​Part; 30. Guide Part; 40. Housing; 41. Engaging Part; 50. Battery Cell; 60. Sealing Part. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] To address the technical problems of complex battery output structures and poor sealing performance in existing technologies, this invention provides a battery output structure and a battery structure that can simplify the battery output structure and improve the sealing reliability of the output position.

[0021] It should be noted that the battery output structure and battery structure described in this invention are used in, but not limited to, low-voltage new energy batteries. For ease of explanation, this invention will only use the application of the battery output structure and battery structure to low-voltage new energy batteries as an example. The principle of the battery output structure and battery structure applied to other types of devices is essentially the same as that applied to low-voltage new energy batteries, and will not be described in detail here.

[0022] Please see Figure 1 , Figure 1 This is an exploded view of a battery output structure according to an embodiment of the present invention. The battery output structure, used to realize the electrical connection between the battery cell 50 and an external circuit, mainly includes a battery management system 10 and a top cover 20. By optimizing the output position structure, the electrical connection path is made more concentrated, thereby simplifying the battery output structure while improving the sealing reliability of the output position.

[0023] The battery management system 10 is a circuit board assembly installed inside the battery, with a connection side 11 on one side and an output side 12 on the other. The connection side 11 is used for electrical connection with the battery cell 50, for example, by soldering wires, connecting tabs, or ribbon cables to connect to the battery cell 50's tabs to collect voltage, current, or temperature information. The output side 12 is used for connection to external circuits, and a pin-type connection assembly 13 is arranged on this side. The pin-type connection assembly 13 can consist of one or more conductive pins, such as metal conductive pins or pin terminals. One end of each conductive pin is soldered or crimped onto the circuit board of the battery management system 10, and the other end is used to plug into an external connector or external circuit board, thereby forming an electrical connection channel. Depending on different application requirements, the conductive pins can be used for power output or signal transmission.

[0024] The top cover 20 is positioned at the output side 12 of the battery management system 10 to cover and protect the battery management system 10. The inner edge of the top cover 20 fits against the outer edge of the battery management system 10, thereby forming a relatively enclosed space in the output area of ​​the battery management system 10. This space is used to isolate dust, moisture, or other impurities from the external environment. The top cover 20 can be made of plastic or composite materials, such as an injection-molded insulating shell structure, whose edge contour can be fitted and fixed with the battery casing or other structural components.

[0025] At the corresponding position of the pin-type connector 13, the upper cover 20 extends outward along the extension direction of the conductive pin to form a sleeve structure 21. This sleeve structure 21 can be understood as a cylindrical protrusion integrally formed on the surface of the upper cover 20, such as a short tube or cylindrical structure, with its inner cavity penetrating both the inner and outer sides of the upper cover 20. One end of the sleeve structure 21 communicates with the sealed space, and the other end communicates with the external environment, thus forming a through channel. The conductive pin extends outward from the circuit board of the battery management system 10 and passes through the internal channel of the sleeve structure 21 to interface with an external connector or external circuit.

[0026] In actual connection, the external circuit can be inserted into the sleeve structure 21 via a plug or connector to complete the electrical connection with the conductive pin inside the sleeve. In other words, the electrical connection process occurs inside the sleeve structure 21, rather than being exposed outside the sleeve structure 21. Since the electrical connection is always located inside the sleeve structure 21, the external environment cannot directly contact the electrical connection area, avoiding the formation of weak points in the seal and improving the overall sealing performance of the electrical connection.

[0027] In this embodiment, the traditional battery output method is simplified. Compared to the existing technology, which typically requires the electrical energy of the cell 50 to be directly led out of the casing through electrode posts, connectors, or wires, and involves complex structures such as glands, connectors, or multiple seals 60 at the protrusion point, this embodiment concentrates the output path of the cell 50 and the external circuit on the battery management system 10 side. It connects to the external connector via a pin-type connection assembly 13, thereby reducing the structural steps of external lead wires / terminals penetrating the casing and decreasing the number of components and assembly complexity. Furthermore, this embodiment provides a sleeve structure 21 on the upper cover 20 that connects the sealed space to the outside. The pin-type connection assembly 13 does not protrude beyond the outer end of the sleeve but completes the electrical connection with the external circuit inside the sleeve. This ensures the electrical connection area is covered by the sleeve, preventing the pin from being directly exposed to the external environment. This shifts the weak point of the seal from the "pin protrusion point" to the sealing interface on the outside of the sleeve, reducing the risk of leakage and improving the sealing reliability of the output position.

[0028] In some embodiments of this application, a positioning post 22 is provided on the upper cover 20. The positioning post 22 is disposed on the inner side of the upper cover 20 and can be a columnar structure integrally formed from the upper cover 20. Its shape can be a cylindrical structure or a columnar structure with a certain cross-section. The positioning post 22 extends from the inner surface of the upper cover 20 toward the battery management system 10. The battery management system 10 is typically a circuit board assembly, and a positioning hole 14 is provided at a corresponding position on the circuit board. The size of the positioning hole 14 is adapted to the positioning post 22 so that the positioning post 22 can be inserted into the positioning hole 14.

[0029] During assembly, when the battery management system 10 is installed in the position of the top cover 20, the positioning post 22 first enters the corresponding positioning hole 14. Through the cooperation between the positioning post 22 and the positioning hole 14, the battery management system 10 can obtain a clear installation position on the top cover 20. As the assembly process continues, the positioning post 22 is further inserted into the positioning hole 14, thereby forming a stable positioning relationship between the battery management system 10 and the top cover 20.

[0030] In this embodiment, by setting a mating structure between the positioning post 22 and the positioning hole 14, the battery management system 10 can be effectively positioned during installation, making the installation position of the battery management system 10 on the upper cover 20 more accurate. At the same time, after the positioning post 22 is inserted into the positioning hole 14, it can also play a certain limiting role for the battery management system 10, thereby reducing the relative movement of the battery management system 10 on the upper cover 20, improving the stability during assembly, and helping to ensure that the installation state of the battery management system 10 in the battery structure remains stable.

[0031] Furthermore, in one embodiment, multiple positioning posts 22 are provided and spaced apart within the area of ​​the battery management system 10. Correspondingly, multiple positioning holes 14 are provided on the battery management system 10 to cooperate with each positioning post 22. Each positioning post 22 is inserted into its corresponding positioning hole 14, thereby forming a multi-point positioning structure between the upper cover 20 and the battery management system 10. By providing multiple positioning posts 22 and distributing them at different positions on the battery management system 10, the battery management system 10 can be subjected to positioning constraints in multiple directions simultaneously during installation, making its installation position more stable.

[0032] Multiple positioning posts 22 can be arranged along the edge area of ​​the battery management system 10, or they can be set in different areas of the battery management system 10, such as near the ends of the circuit board or in relatively separate areas. Correspondingly, the battery management system 10 is provided with positioning holes 14 that match the positions, so that the positioning posts 22 can be smoothly inserted into them. During assembly, each positioning post 22 enters the corresponding positioning hole 14 in sequence, so that the battery management system 10 is supported in multiple positions at the same time, thereby determining the installation position of the battery management system 10 in the top cover 20.

[0033] In this embodiment, multiple positioning posts 22 cooperate with multiple positioning holes 14 to form a multi-point positioning relationship, thereby improving the installation stability of the battery management system 10 on the top cover 20. Compared with positioning using only a single positioning structure, multi-point positioning can restrict the relative movement of the battery management system 10 over a wider range, enabling the battery management system 10 to maintain a more stable position after assembly. Furthermore, during assembly, the multi-point positioning structure also serves as an auxiliary guide, making it easier to align the battery management system 10 to the predetermined position during installation, thereby improving assembly efficiency and reducing the possibility of misalignment during assembly.

[0034] In one embodiment, a guide 30 is provided at the opening of the sleeve structure 21 near the pin connector 13. The guide 30 can be arranged around the opening of the sleeve structure 21, thereby forming a guide area at the entrance of the sleeve structure 21. The guide 30 can be an integral structure with the upper cover 20, or it can be a separate component fixed at the opening of the sleeve structure 21. Its overall shape can be conical, flared, or other structures with constricting features. Through the guide 30, a guide channel that gradually narrows from the outside to the inside is formed at the opening of the sleeve structure 21.

[0035] The opening formed by the guide member 30 gradually decreases in size along the extension direction of the pin-type connecting assembly 13. That is, the opening size is relatively large on the side closer to the pin-type connecting assembly 13, while the opening size is relatively small on the side closer to the inside of the sleeve structure 21, thus forming a channel structure that gradually narrows from large to small at this position. The inner side of the guide member 30 can form a guide surface that slopes inward toward the inside of the sleeve. When the pin-type connecting assembly 13 is inserted into the sleeve structure 21, it can first enter the larger entry area, and then be gradually guided by the guide surface as it continues to move inward, gradually moving to the predetermined position.

[0036] During assembly, as the pin-type connecting assembly 13 moves toward the sleeve structure 21, the larger opening size of the guide member 30 near the pin-type connecting assembly 13 allows the pin-type connecting assembly 13 to smoothly enter the guide area even with a certain assembly deviation between it and the sleeve structure 21. As the pin-type connecting assembly 13 continues to move along the extension direction, it gradually approaches the center of the sleeve structure 21 under the guidance of the inner wall of the guide member 30, eventually entering the interior of the sleeve structure 21. This guide channel structure, which gradually decreases in size, guides the pin-type connecting assembly 13 as it enters the sleeve structure 21, thereby reducing the possibility of interference or misalignment during assembly and making it easier for the pin-type connecting assembly 13 to enter the interior of the sleeve structure 21.

[0037] In one embodiment, the end of the pin connector 13 in its extension direction is not higher than the edge of the sleeve structure 21, that is, after the pin connector 13 extends into the sleeve structure 21, the position of its outermost end is still within the edge of the sleeve structure 21.

[0038] With this structural configuration, the pin connector 13 is always contained within the sleeve structure 21, thus preventing it from being directly exposed to the external environment. When an external connector or plug needs to make an electrical connection with the pin connector 13, the connector can be inserted into the sleeve from the opening of the sleeve structure 21, making contact with the pin connector 13 within the space formed by the sleeve structure 21. Since the pin connector 13 does not protrude beyond the sleeve structure 21, the electrical connection area is confined within the sleeve structure 21.

[0039] In this embodiment, the above-described structure provides protection for the pin-type connector 13, reducing the likelihood of it being subjected to external impacts during transportation or use. Furthermore, since the pin-type connector 13 does not protrude beyond the sleeve structure 21, the electrical connection area is not directly exposed to the external environment, thus reducing the possibility of external dust, moisture, etc., entering the battery's internal structure. Simultaneously, when a sealing structure is required, the sealing interface can be arranged in the outer area of ​​the sleeve structure 21, thereby reducing the possibility of weak points in the seal at the pin-type connector 13 location and further improving the sealing reliability of the battery output position.

[0040] In one embodiment, a certain gap is maintained between the inner wall of the sleeve structure 21 and the pin-type connecting assembly 13. That is, the pin-type connecting assembly 13 does not directly contact the inner wall of the sleeve structure 21, but forms a void space around the pin-type connecting assembly 13. This gap can be formed along the extension direction of the pin-type connecting assembly 13, for example, an annular gap is formed between the outer side of the pin-type connecting assembly 13 and the inner wall of the sleeve structure 21, so that the pin-type connecting assembly 13 maintains a certain amount of movement within the sleeve structure 21.

[0041] In this embodiment, by setting a gap, interference between the pin-type connecting assembly 13 and the inner wall of the sleeve structure 21 can be avoided during installation. For example, when assembling the battery management system 10 and the top cover 20, the pin-type connecting assembly 13 enters the sleeve structure 21. If there is no reserved space between them, collisions or jamming may easily occur due to assembly errors. By setting a gap between the inner wall of the sleeve structure 21 and the pin-type connecting assembly 13, even if there is a certain assembly deviation between the pin-type connecting assembly 13 and the sleeve structure 21, it can still smoothly enter the sleeve structure 21, thereby improving the smoothness of the assembly process.

[0042] Furthermore, this gap also provides space for the insertion of external connection structures. For example, when an external connector is inserted through the opening of the sleeve structure 21 and electrically connected to the pin connector assembly 13, the gap between the inner wall of the sleeve structure 21 and the pin connector assembly 13 can serve as a movement space for the connector during insertion, thus making the connection process smoother. At the same time, the gap structure can also prevent the pin connector assembly 13 from directly rubbing or being squeezed against the inner wall of the sleeve structure 21 when under force, thereby helping to protect the pin connector assembly 13 and improve the reliability of the structure.

[0043] In one embodiment, the pin-type connector assembly 13 includes a plurality of connector pins 131 spaced apart. The plurality of connector pins 131 collectively form an electrical connection interface between the battery management system 10 and an external circuit, enabling the external connector to establish an electrical connection with the battery management system 10 via the connector pins 131 after insertion into the sleeve structure 21. Because the connector pins 131 are spaced apart, independent insertion areas are formed between adjacent connector pins 131. During mating, the external connector can make corresponding contact with each connector pin 131, thereby reducing the risk of accidental contact, cross-connection, or contact interference during mating and improving the stability and reliability of the mating process.

[0044] Furthermore, the spaced arrangement of multiple connection pins 131 facilitates functional allocation. For example, some connection pins 131 can be used for power output, while others can be used for signal transmission or control signal connection. This allows power connection and signal connection to be achieved within the same pin interface, and the spaced arrangement maintains necessary electrical isolation, thereby reducing mutual interference between different functional channels. Thus, the arrangement of multiple connection pins 131 not only meets the multi-channel connection requirements between the battery management system 10 and external circuits but also improves the consistency and reliability of the connection process.

[0045] On the other hand, please see Figure 2 , Figure 2 This is an exploded view of a battery structure provided in an embodiment of the present invention. This application also provides a battery structure including a housing 40, battery cells 50, and the aforementioned battery output structure. The housing 40 forms the main structure of the battery, and its interior forms an installation space for accommodating the battery cells 50 and the battery management system 10. The battery cells 50 are disposed inside the housing 40 and provide the battery's electrical energy output. The battery cells 50 can be a single cell or a module formed by combining multiple cells 50. The battery management system 10 is also arranged inside the housing 40 and is electrically connected to the battery cells 50. It can be connected to the battery cell 50's tabs through connecting pieces, wires, or welding structures to realize the collection and management of the battery cell 50's electrical energy.

[0046] The top cover 20 is installed at the opening of the housing 40 and fixedly connected to the housing 40, thereby sealing the internal space of the housing 40. The top cover 20 covers the output side 12 area of ​​the battery management system 10 and is used to protect the battery management system 10. The output side 12 of the battery management system 10 is provided with a pin-type connection assembly 13, and the top cover 20 extends outward along the extension direction of the pin-type connection assembly 13 at the corresponding position to form a sleeve structure 21, so that the pin-type connection assembly 13 is located inside the sleeve structure 21.

[0047] In this battery structure, the electrical energy generated by the cell 50 is first transferred to the battery management system 10 through the electrical connection between the cell 50 and the battery management system 10, and then the pin-type connection component 13 on the battery management system 10 establishes an electrical connection with the external circuit. Compared with the traditional battery structure where the cell 50 is directly led out to the outside of the casing through electrode posts or wires, this embodiment centrally sets the output interface on one side of the battery management system 10, and then achieves external connection through the pin-type connection component 13. This reduces the structural steps of the cell 50 terminals protruding from the casing or additional wires being led out, making the overall battery structure simpler. At the same time, since the pin-type connection component 13 is located inside the sleeve structure 21 formed by the upper cover 20, the external connector can be inserted into the sleeve structure 21 to connect with the pin-type connection component 13 during use. Therefore, the electrical connection area is confined inside the sleeve structure 21, so that the pin-type connection component 13 is not directly exposed to the external environment, thereby reducing the possibility of forming a weak sealing point at the battery casing protrusion position, which is beneficial to improving the sealing reliability of the battery output position.

[0048] In one embodiment, the housing 40 is provided with a locking portion 41, and the upper cover 20 is provided with a locking portion 23 that mates with the locking portion 41. Through the locking engagement between the locking portion 41 and the locking portion 23, the upper cover 20 can be installed and fixed on the housing 40. The locking portion 41 can be located at the edge of the housing 40, for example, it can be formed as a protrusion, a slot, or a buckle at the edge of the opening of the housing 40; correspondingly, the upper cover 20 is provided with a locking portion 23 at a corresponding position, for example, it can be formed as an inwardly extending buckle, hook, or elastic card structure to form a mating relationship with the locking portion 41 on the housing 40.

[0049] During assembly, the top cover 20 moves toward the opening of the housing 40. When the snap-fit ​​part 23 contacts the engaging part 41, the snap-fit ​​part 23 can undergo a certain elastic deformation under external force, allowing the snap-fit ​​part 23 to pass over the engaging part 41. After the snap-fit ​​part 23 passes over the engaging part 41, the snap-fit ​​part 23 returns to its original shape and engages with the engaging part 41, thereby fixing the top cover 20 to the housing 40. For example, the edge of the housing 40 can be provided with an annular flange as the engaging part 41, while the edge of the top cover 20 can be provided with an inwardly extending buckle structure as the snap-fit ​​part 23. When the top cover 20 is pressed onto the housing 40, the buckle structure engages below the annular flange, thereby achieving a fixed connection between the top cover 20 and the housing 40.

[0050] In this embodiment, the snap-fit ​​structure allows for positioning and fixing of the top cover 20 to the housing 40 without the need for additional fasteners, enabling the top cover 20 to be quickly installed on the housing 40 and simplifying the battery assembly process. Simultaneously, the snap-fit ​​structure ensures that the top cover 20 remains in a stable position after installation, thereby guaranteeing the stability of the battery's internal structure.

[0051] Furthermore, in some embodiments, a sealing element 60 is provided between the housing 40 and the upper cover 20. The sealing element 60 is located at the joint between the housing 40 and the upper cover 20, and is used to form a sealing interface between the housing 40 and the upper cover 20, thereby reducing the possibility of moisture, dust or other impurities in the external environment entering the interior of the housing 40. The sealing element 60 can be arranged along the periphery of the opening of the housing 40, for example, at the position where the edge of the opening of the housing 40 contacts the upper cover 20, so that the sealing element 60 is clamped between the housing 40 and the upper cover 20 after assembly.

[0052] The sealing element 60 can be a sealing structure with a certain degree of elasticity, such as a rubber sealing ring, a silicone sealing ring, or other elastic sealing gaskets. When the top cover 20 is installed at the opening of the housing 40 and fixedly connected to the housing 40, the sealing element 60 is compressed between the housing 40 and the top cover 20, thereby producing elastic deformation. This allows the sealing element 60 to fit tightly against the contact surfaces of the housing 40 and the top cover 20, thus forming a continuous sealing area around the opening of the housing 40. The sealing element 60 can also be a sealant, applied to the edge of the opening of the housing 40 or the contact surface of the top cover 20. After the top cover 20 and the housing 40 are assembled, the sealant fills the gap between them and cures, thereby forming a sealing layer.

[0053] In this embodiment, by providing a sealing element 60 between the housing 40 and the top cover 20, a stable sealing interface can be formed at the connection position between the housing 40 and the top cover 20, so that the internal space of the housing 40 remains relatively closed, thereby improving the overall sealing performance of the battery structure.

[0054] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A battery output structure for connecting a battery cell to an external circuit, characterized in that, include: A battery management system includes a connection side and an output side. The connection side is electrically connected to the battery cell, and the output side is provided with a pin-type connection assembly for electrical connection to an external circuit. The top cover is disposed on the output side and fits against the outer edge of the battery management system to form a sealed space. The top cover extends outward along the extension direction of the pin connector to form a sleeve structure. The sleeve structure connects the sealed space and the outside. The pin connector passes through the sleeve structure.

2. The battery output structure according to claim 1, characterized in that, The top cover is provided with a positioning post, and the battery management system is provided with a positioning hole that cooperates with the positioning post. The positioning post passes through the positioning hole to achieve positioning between the battery management system and the top cover.

3. The battery output structure according to claim 2, characterized in that, The positioning posts are provided in multiple ways and are spaced apart in the battery management system, and the multiple positioning posts are respectively inserted into the corresponding positioning holes.

4. The battery output structure according to claim 1, characterized in that, A guide is fitted at the opening of the sleeve structure near the pin connector assembly, and the opening formed by the guide gradually decreases along the extension direction of the pin connector assembly.

5. The battery output structure according to claim 4, characterized in that, The end of the pin-type connecting assembly in its extension direction is not higher than the edge of the sleeve structure.

6. The battery output structure according to claim 5, characterized in that, There is a gap between the inner wall of the sleeve structure and the pin-type connecting assembly.

7. The battery output structure according to claim 1, characterized in that, The pin-type connector assembly includes multiple connector pins, which are spaced apart.

8. A battery structure, characterized in that, The device includes a housing, battery cells, and a battery output structure as described in any one of claims 1 to 7. The top cover is fixedly connected to the housing, and both the battery cells and the battery management system are disposed within the housing, with the battery cells being electrically connected to the battery management system.

9. The battery structure according to claim 8, characterized in that, The housing is provided with a locking part, and the top cover is provided with a locking part that cooperates with the locking part. The locking part and the locking part are engaged to position the top cover and the housing.

10. The battery structure according to claim 9, characterized in that, A sealing element is provided between the box body and the top cover, and the sealing element is located at the joint between the box body and the top cover.

Images