Battery structure resistant to overload impact

Abstract

The application discloses an anti-overload-impact battery structure and relates to the technical field of lithium batteries, which comprises a battery body, a protective shell, fixed hole positions and a connector. The protective shell is wrapped outside the battery body, and the fixed hole positions are arranged on the protective shell. The connector comprises a fixedly connected mounting portion and a connecting portion. The mounting portion is fixedly connected with the protective shell, and the connecting portion extends along the axial direction of the fixed hole positions and is in interference fit with the hole wall of the fixed hole positions, so that the shaking of the connector can be limited. Therefore, the anti-vibration capacity and mechanical strength of the connector can be improved, the connector can be prevented from loosening or falling off under the condition of vibration impact, the stability and safety of the product in a harsh environment can be greatly improved, and the reliable operation of the system is ensured.

Description

Technical Field

[0001] This application relates to the field of lithium battery technology, and in particular to a battery structure resistant to overload impact. Background Technology

[0002] With the rapid development of aerospace and civilian drones, the requirements for product performance and reliability are constantly increasing. In particular, traditional soft-pack lithium batteries face many challenges when facing complex environments such as vibration and impact.

[0003] Existing pouch lithium batteries are prone to deformation, damage, or short circuits under high-intensity impact and overload conditions, leading to performance degradation and even safety hazards. Furthermore, most existing lithium battery connectors use the XT series, which, while widely used, suffer from poor vibration resistance, weak connections, and a lack of self-locking functionality. The connectors are mostly made of plastic, which has low strength, and most lack fixed mounting holes, making them unable to securely fasten to the electrical housing structure under vibration and impact. This can easily result in connector loosening, detachment, or poor contact, affecting the stability and safety of the equipment. Utility Model Content

[0004] The purpose of this application is to provide a battery structure resistant to overload impact, aiming to solve the technical problem in the prior art that connectors are prone to loosening, falling off or poor contact under vibration and impact environments.

[0005] To achieve the above objectives, this application proposes a battery structure resistant to overload impact, the battery structure comprising: A battery body and a protective casing, wherein the protective casing is wrapped around the outside of the battery body; Fixing holes are provided in the protective shell; The connector includes a mounting portion and a connecting portion that are fixedly connected. The mounting portion is fixedly connected to the protective shell, and the connecting portion extends axially along the fixed hole and is interference-fitted with the hole wall of the fixed hole to limit the connector from shaking.

[0006] In one embodiment, the number of fixing holes is at least two, and the at least two fixing holes are distributed at intervals, with the number of connectors corresponding one-to-one with the number of fixing holes.

[0007] In one embodiment, the protective shell includes a side plate, a bottom plate, and a housing that are interconnected. The side plate, bottom plate, and housing surround and enclose the outside of the battery body. The fixing holes are formed in the side plate, and the mounting part is fixedly connected to the side plate.

[0008] In one embodiment, the connector further includes a connecting member, the side plate has a connecting hole, the mounting part has a mounting hole corresponding to the connecting hole, and the connecting member passes through the mounting hole and the connecting hole in sequence to fix the mounting part to the side plate.

[0009] In one embodiment, the number of connecting holes is at least two, and the at least two connecting holes are distributed at intervals around the fixing hole position, and the number and distribution position of the mounting holes correspond one-to-one with the connecting holes.

[0010] In one embodiment, the connector is a bolt.

[0011] In one embodiment, the connector is a pin.

[0012] In one embodiment, the battery structure resistant to overload impact further includes an external shock-absorbing pad disposed on the outer wall of the base plate.

[0013] In one embodiment, the number of external shock-absorbing pads is at least two, and the at least two external shock-absorbing pads are spaced apart along the extension direction of the outer wall of the base plate.

[0014] In one embodiment, the overload-resistant battery structure further includes an internal shock-absorbing pad disposed on the inner wall of the protective shell.

[0015] The above-mentioned technical solution of this application has at least the following beneficial technical effects: The technical solution of this application employs a protective shell wrapped around the battery body, with fixing holes provided on the protective shell. This allows the mounting part of the connector to be fixedly connected to the protective shell, and the connecting part of the connector to extend axially along the fixing hole and make an interference fit with the hole wall. This restricts the connector from shaking, thereby improving the connector's vibration resistance and mechanical strength, preventing the connector from loosening or falling off under vibration and impact conditions. Consequently, it can significantly improve the stability and safety of the product in harsh environments, ensuring the reliable operation of the system. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of an embodiment of the overload-resistant battery structure provided in this application when the connector is assembled. Figure 2 This is a second-view structural schematic diagram of an embodiment of the overload-resistant battery structure provided in this application when the connector is assembled; Figure 3 This is a schematic diagram of an embodiment of the battery structure for resisting overload impact provided in this application when the connector is not assembled.

[0017] Figure label: 1. Protective shell; 11. Side plate; 12. Base plate; 13. Shell; 2. Fixing holes; 3. Connector; 31. Mounting part; 32. Connecting part; 33. Connecting piece; 4. External shock-absorbing pad. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this application. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0019] The embodiments described in this application are only some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of this application.

[0020] With the rapid development of aerospace and civilian drones, the requirements for product performance and reliability are constantly increasing. In particular, traditional soft-pack lithium batteries face many challenges when facing complex environments such as vibration and impact.

[0021] Existing pouch lithium batteries are prone to deformation, damage, or short circuits under high-intensity impact and overload conditions, leading to performance degradation and even safety hazards. Furthermore, most existing lithium battery connectors use the XT series, which, while widely used, suffer from poor vibration resistance, weak connections, and a lack of self-locking functionality. The connectors are mostly made of plastic, which has low strength, and most lack fixed mounting holes, making them unable to securely fasten to the electrical housing structure under vibration and impact. This can easily result in connector loosening, detachment, or poor contact, affecting the stability and safety of the equipment.

[0022] To address the aforementioned technical problems, this application proposes a battery structure resistant to overload impact. Please refer to [link / reference]. Figures 1 to 3 In one embodiment of this application, the overload-resistant battery structure includes a battery body, a protective shell 1, a fixing hole 2, and a connector 3. The protective shell 1 is wrapped around the outside of the battery body and is made of metal. The fixing hole 2 is formed in the protective shell 1. The connector 3 includes a mounting part 31 and a connecting part 32 that are fixedly connected. The mounting part 31 is fixedly connected to the protective shell 1, and the connecting part 32 extends axially along the fixing hole 2 and is interference-fitted with the hole wall of the fixing hole 2 to limit the connector 3 from shaking.

[0023] The technical solution of this application employs a protective shell 1 wrapped around the battery body, with fixing holes 2 provided on the protective shell 1. This allows the mounting part 31 of the connector 3 to be fixedly connected to the protective shell 1, and the connecting part 32 of the connector 3 to extend axially along the fixing holes 2 and to be interference-fitted with the hole wall of the fixing holes 2. This restricts the shaking of the connector 3, thereby improving the vibration resistance and mechanical strength of the connector 3, preventing the connector 3 from loosening or falling off under vibration and impact conditions. Consequently, it can significantly improve the stability and safety of the product in harsh environments, ensuring the reliable operation of the system.

[0024] Please see Figure 2 and Figure 3 In one embodiment, the number of fixing holes 2 is at least two, and the at least two fixing holes 2 are spaced apart. The number of connectors 3 corresponds one-to-one with the number of fixing holes 2. This embodiment, by setting at least two fixing holes 2 and distributing them at intervals, ensures that the connectors 3 correspond one-to-one with the fixing holes 2, enhancing the stability and accuracy during installation, thereby improving the fixing effect of the connectors 3, avoiding the risk of failure due to hole mismatch or loosening, and helping to improve the reliability and anti-interference ability of the overall structure, ensuring the stability and safety of the equipment during long-term use. In a specific embodiment, the number of fixing holes 2 is two, and the number of connectors 3 is also two accordingly. The two connectors 3 are a charge / discharge connector 3 and a balance connector 3, which are respectively installed in the two fixing holes 2. Both the charge / discharge connector 3 and the balance connector 3 are self-locking connectors and meet the impact and vibration requirements.

[0025] Please see Figure 1 In one embodiment, the protective shell 1 includes interconnected side plates 11, a bottom plate 12, and a housing 13. The side plates 11, bottom plate 12, and housing 13 enclose the battery body. Fixing holes 2 are provided on the side plates 11, and a mounting part 31 is fixedly connected to the side plates 11. In this embodiment, the protective shell 1 is designed with interconnected side plates 11, bottom plate 12, and housing 13 to form a unified enclosed space, ensuring effective protection of the battery body. The enclosure of the side plates 11, bottom plate 12, and housing 13 prevents external physical damage, dust, moisture, etc., from affecting the battery body, enhancing battery safety. Specifically, the fixing holes 2 on the side plates 11 provide necessary positioning points for subsequent installation and fixing. The fixed connection between the mounting part 31 and the side plates 11 further enhances the stability between the protective shell 1 and the battery, preventing loosening or damage caused by vibration or external forces. This technical solution not only helps ensure the sealing and stability of the protective shell 1 and the battery body but also facilitates operation during installation, improving production efficiency.

[0026] Please see Figure 1In one embodiment, the connector 3 further includes a connecting member 33. The side plate 11 has a connecting hole, and the mounting part 31 has a mounting hole corresponding to the connecting hole. The connecting member 33 passes through the mounting hole and the connecting hole in sequence to fix the mounting part 31 to the side plate 11. Fixing the mounting part 31 to the side plate 11 by having the connecting member 33 pass through the mounting hole and the connecting hole in sequence effectively enhances the stability between the protective shell 1 and the mounting part 31, preventing loosening or detachment during use. The precisely aligned connecting hole and mounting hole design improves assembly accuracy, reduces installation difficulty, and facilitates subsequent maintenance and disassembly. Furthermore, the connection method simplifies the overall structural design, reduces production costs, and improves product reliability and durability, thus enhancing the overall performance of the equipment.

[0027] In one embodiment, at least two connecting holes are provided, spaced apart around the fixing hole 2. The number and distribution of the mounting holes correspond one-to-one with the connecting holes. By distributing at least two connecting holes around the fixing hole 2 at intervals, connection stability is enhanced, preventing structural deformation or loosening caused by uneven stress at a single connection point. The one-to-one correspondence between the number and distribution of the mounting holes ensures precise alignment, reduces assembly errors, improves installation efficiency, and lowers uncertainties in the production process. Furthermore, this technical solution helps optimize the product's load-bearing capacity, enhances overall reliability and durability, and consequently improves product lifespan and user experience.

[0028] Please see Figure 1 In one embodiment, the connector 33 is a bolt. This embodiment, by using a bolt as the connector 33, achieves a high-strength and reliable connection, ensuring the stability between the 32 connecting parts, and facilitating installation and disassembly, maintenance, and component replacement. The flexibility of the bolt allows the tightness of the connection to be adjusted as needed, adapting to different working environments and usage requirements. By appropriately selecting the bolt specifications and materials, the durability and compressive strength of the 32 connecting parts can be ensured, while avoiding structural damage caused by stress concentration.

[0029] Please see Figure 1 In one embodiment, the connector 33 is a pin. This embodiment, by using a pin as the connector 33, provides precise positioning and reliable fixation, enhancing the stability of the connecting parts 32 and preventing loosening due to vibration or external forces. The use of pins simplifies the installation process and improves the overall strength between the connecting parts 32, making it suitable for long-term high-load use. By rationally designing the size and material of the pins, the durability and corrosion resistance of the connection can be effectively improved, which helps extend the service life of the equipment and reduce maintenance costs.

[0030] Please see Figures 1 to 3In one embodiment, the overload-resistant battery structure further includes an external shock-absorbing pad 4, which is disposed on the outer wall of the base plate 12. This embodiment, by providing the external shock-absorbing pad 4 on the outer wall of the base plate 12, can effectively mitigate the transmission of external impact forces to the battery, reduce the risk of battery damage when subjected to overload impacts, improve the safety and reliability of the battery, extend the battery's lifespan, and enhance the overall durability of the product.

[0031] Please see Figures 1 to 3 In one embodiment, the number of external shock-absorbing pads 4 is at least two, and the at least two external shock-absorbing pads 4 are spaced apart along the extension direction of the outer wall of the base plate 12. This embodiment, by setting at least two external shock-absorbing pads 4 and spaced them apart along the extension direction of the outer wall of the base plate 12, can evenly distribute the impact force, effectively enhance the impact resistance of the battery structure, avoid excessive local stress, and improve the stability and safety of the battery in different environments.

[0032] Please see Figure 1 In one embodiment, the battery structure resistant to overload impact further includes an internal shock-absorbing pad disposed on the inner wall of the protective shell 1. This embodiment, by providing an internal shock-absorbing pad on the inner wall of the protective shell 1, can further effectively absorb and buffer the internal and external pressures generated by the battery during overload impacts, reduce the direct impact force on the battery, enhance the battery's protective performance, improve its impact resistance, and thus improve the battery's safety and reliability.

[0033] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this application and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this application should be included within the protection scope of this application. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A battery structure resistant to overload impact, characterized in that, include: A battery body and a protective casing, wherein the protective casing is wrapped around the outside of the battery body; Fixing holes are provided in the protective shell; The connector includes a mounting portion and a connecting portion that are fixedly connected. The mounting portion is fixedly connected to the protective shell, and the connecting portion extends axially along the fixed hole and is interference-fitted with the hole wall of the fixed hole to limit the connector from shaking.

2. The battery structure resistant to overload impact according to claim 1, characterized in that, The number of fixing holes is at least two, and the at least two fixing holes are distributed at intervals. The number of connectors corresponds one-to-one with the number of fixing holes.

3. The battery structure resistant to overload impact according to claim 1, characterized in that, The protective shell includes interconnected side plates, a bottom plate, and a housing. The side plates, bottom plate, and housing surround and enclose the outside of the battery body. The fixing holes are opened on the side plates, and the mounting part is fixedly connected to the side plates.

4. The battery structure resistant to overload impact according to claim 3, characterized in that, The connector further includes a connector, the side plate has a connection hole, the mounting part has a mounting hole corresponding to the connection hole, and the connector passes through the mounting hole and the connection hole in sequence to fix the mounting part to the side plate.

5. The battery structure resistant to overload impact according to claim 4, characterized in that, The number of connecting holes is at least two, and the at least two connecting holes are distributed at intervals around the fixing hole position. The number and distribution position of the mounting holes correspond one-to-one with the connecting holes.

6. The battery structure resistant to overload impact according to claim 4, characterized in that, The connecting component is a bolt.

7. The battery structure resistant to overload impact according to claim 4, characterized in that, The connector is a pin.

8. The battery structure resistant to overload impact according to claim 3, characterized in that, The battery structure resistant to overload impact also includes an external shock-absorbing pad, which is disposed on the outer wall of the base plate.

9. The battery structure resistant to overload impact according to claim 8, characterized in that, The number of external shock-absorbing pads is at least two, and the at least two external shock-absorbing pads are distributed at intervals along the extension direction of the outer wall of the base plate.

10. The battery structure resistant to overload impact according to claim 1, characterized in that, The battery structure resistant to overload impact also includes an internal shock-absorbing pad, which is disposed on the inner wall of the protective shell.

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