Battery fault skipping transmission conversion device in multi-battery module

Abstract

The invention discloses a battery fault skipping transmission conversion device in a multi-battery module, and relates to the technical field of battery management.The device comprises a protective outer plate, a battery body, a support and a transmission conversion assembly, the transmission conversion assembly adopts a mechanical contactless switching mechanism, and when a power management system detects a fault battery, the transmission conversion assembly can drive the battery body to rotate; and meanwhile, the normal series connection of the other batteries is kept. The transmission conversion assembly is mainly composed of a position selection lead screw, a top sliding block, a stator and rotor pin and a conductive switching mechanism. After the BMS sends out a fault signal, the position selection screw rod drives the top sliding block to move to the position of a fault battery, and the stator and rotor pins are locked; and then, the rotating shaft is tripped under electromagnetic driving, and the conductive blocks are switched through a rotating action, so that the series conductive blocks are disconnected, the conductive blocks are skipped to be conducted, and the electrical isolation of the fault battery is realized. After switching is completed, the mechanism automatically resets, and continuous and stable operation of the system is ensured; and the safety and the service life of the multi-battery module are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery management, and specifically to a battery fault skipping transmission conversion device in a multi-battery module. Background Art

[0002] With the rapid development of new energy technologies, multi-battery modules have been widely used in fields such as electric two-wheelers, electric three-wheelers, electric vehicles, and energy storage systems. However, during actual use, individual batteries in the battery module may fail due to aging, overcharging, over-discharging, or other reasons, resulting in an increase in their internal resistance or complete failure. If the faulty battery is not isolated in a timely manner, it will not only affect the performance of the entire battery module but may also cause safety hazards such as thermal runaway. Currently, the common solution is to detect the faulty battery through a battery management system (BMS) and cut off its connection. However, in the prior art, the series connection structure of the battery module is usually fixedly connected, and the isolation of the faulty battery requires complex relay or switch devices, which are not only costly but also slow in response speed and insufficient in reliability.

[0003] In addition, traditional fault skipping devices mostly use electronic switches or mechanical relays, which are prone to generate arcs or poor contacts in a high-current environment, further increasing the instability of the system. Therefore, there is an urgent need for a battery fault skipping transmission conversion device with a simple structure, rapid response, and high reliability, which can quickly isolate the faulty battery from the circuit when detected, while maintaining the normal series connection of other batteries to ensure the continuous and stable operation of the battery module. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a battery fault skipping transmission conversion device in a multi-battery module, which can actively skip the faulty battery during actual use by setting a transmission conversion component to ensure the safe and normal operation of the battery pack, so as to solve the problem that traditional batteries cannot skip faulty batteries quickly and conveniently.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A battery fault skipping transmission conversion device in a multi-battery module includes a protective outer plate. There are two protective outer plates, and a battery body is arranged between the two protective outer plates. There are multiple battery bodies, and a bracket is arranged outside the battery body. The brackets are fixedly connected to each other. The protective outer plate is fixedly connected to the bracket. Conductive sheets are fixedly connected to both the positive and negative ends of the battery body. Transmission conversion components are arranged on the conductive sheets on both sides of the battery body. The transmission conversion components can skip the faulty battery in the connection of multiple batteries to ensure the stable connection of the batteries.

[0007] As a preferred technical solution of the present invention, the transmission conversion component is a rotational fault skipping component. The rotational fault skipping component includes protective shells arranged on both sides of the battery body. One side of the protective shell away from the battery body is fixedly connected to a transmission shell. A first selection screw rod is rotatably arranged in the transmission shell. A top slider is sleeved on the first selection screw rod in a threaded manner. The two sides of the top slider close to the battery body are arranged as convex structures.

[0008] As a preferred technical solution of the present invention, a mounting rod is fixedly connected in the transmission shell. A stator-rotor pin penetrates through the mounting rod in a sliding manner. An elastic member is sleeved on the stator-rotor pin. The stator-rotor pin corresponds to the convex structure on one side of the top slider.

[0009] As a preferred technical solution of the present invention, a second selection screw rod is rotatably connected in the protective shell. A rotating shaft is sleeved on the second selection screw rod in a threaded manner. An external hexagonal block is fixedly sleeved on the rotating shaft. A notch is formed on one side of the external hexagonal block. A rotating handle is fixedly connected to the side wall of the rotating shaft. The rotating handle is arranged corresponding to the notch position.

[0010] As a preferred technical solution of the present invention, an internal hexagonal block is sleeved outside the external hexagonal block. A rotating sleeve is fixedly sleeved outside the internal hexagonal block. A skipping conductive block and a series conductive block are respectively fixedly connected to both sides of the rotating sleeve. The series conductive block is correspondingly connected to the conductive sheet.

[0011] As a preferred technical solution of the present invention, the transmission conversion component includes a sliding skipping component. The sliding skipping component includes an insulating shell. The insulating shell is fixedly connected to the bracket. A plurality of conductive rings are fixedly connected in the insulating shell. An insulating rod is slidably arranged in the conductive ring. The upper and lower ends of the insulating rod are respectively fixedly connected to an upper conductive section and a lower conductive section.

[0012] As a preferred technical solution of the present invention, a conductive connecting rod is fixedly connected to the top of the upper conductive section. The conductive connecting rod is of a U-shaped structure. The conductive connecting rods are cross-connected. A series sleeve is fixedly connected to the bottom inside the insulating shell. The series sleeve is slidably connected to two adjacent lower conductive sections.

[0013] The present invention has the following beneficial effects: Efficient isolation of faulty batteries: The present invention realizes the rapid isolation of faulty batteries through the transmission conversion component, can quickly act after the power management system (BMS) issues a signal, skip the faulty batteries, avoid their influence on the entire module, and significantly improve the reliability and safety of the system.

[0014] Mechanical transmission design, with rapid response: By adopting mechanical structures such as selected-position lead screws, top sliders, and stator-rotor pins, and cooperating with electromagnetic coils or external forces for driving, precise positioning and rapid switching of faulty batteries are achieved, and the response speed far exceeds that of traditional electronic switches or relays. Simple structure and low cost: The device is mainly composed of insulating parts, conductive parts, and metal parts, without complex electronic components, reducing the manufacturing cost and maintenance difficulty, while improving the durability of the device. Modular design, with strong expandability: The transmission conversion components can be flexibly configured in multiple battery modules, applicable to battery packs with different quantities and arrangements, and having strong versatility and expandability.

[0015] Dual-conductivity guarantee: Through the cooperation of series-connected conductive blocks and bypass conductive blocks, it is ensured that when bypassing faulty batteries, the circuit can still maintain a low-impedance connection, reducing energy loss and heating problems. Manual and automatic combination: The device supports manual operation (such as turning the rotating handle) and automatic control (such as electromagnetic coil drive), adapting to the requirements of different application scenarios;

[0016] At the same time, an innovative sliding conductive reconstruction mechanism is designed to achieve physical-level isolation of faulty batteries, combining the response speed of electronic systems and the reliability of mechanical devices. Its modular design is particularly suitable for vehicle-mounted power battery systems and large-scale energy storage devices that require high safety, providing a new technical path for solving the single-point fault problem of battery modules. Brief Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of a battery fault bypass transmission conversion device in a multi-battery module Figure 1 。

[0018] Figure 2 It is a structural schematic diagram of a battery fault bypass transmission conversion device in a multi-battery module Figure 2 。

[0019] Figure 3 It is a structural schematic diagram of a battery fault bypass transmission conversion device in a multi-battery module Figure 3 。

[0020] Figure 4 It is a structural schematic diagram of a battery fault bypass transmission conversion device in a multi-battery module Figure 4 。

[0021] Figure 5 It is a structural schematic diagram of a battery fault bypass transmission conversion device in a multi-battery module Figure 5 。

[0022] Figure 6 It is Figure 5 an enlarged structural schematic diagram of A in

[0023] Figure 7It is a front structural schematic diagram of a battery fault skipping transmission conversion device in a multi-battery module.

[0024] Figure 8 It is a structural schematic diagram of a sliding skipping component in a battery fault skipping transmission conversion device in a multi-battery module.

[0025] In the figure: 1. Protective outer plate; 2. Battery body; 3. Protective shell; 4. Transmission shell; 5. First selection screw rod; 6. Second selection screw rod; 7. Bracket; 8. Rotating handle; 9. Skipping conductive block; 10. Top slider; 11. Fixed and rotating pin; 12. Elastic part; 13. Series conductive block; 14. Outer hexagon block; 15. Rotating shaft; 16. Notch; 17. Mounting rod; 18. Positioning groove; 19. Conductive sheet; 20. Transmission ring; 21. Inner hexagon block; 22. Rotating sleeve; 23. Series sleeve; 24. Lower conductive section; 25. Conductive connecting rod; 26. Insulating rod; 27. Upper conductive section; 28. Conductive ring; 29. Insulating shell. Specific embodiments

[0026] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] Embodiment 1, please refer to Figures 1 - 8 , a battery fault skipping transmission conversion device in a multi-battery module, including a protective outer plate 1. There are two protective outer plates 1, and a battery body 2 is arranged between the two protective outer plates 1. There are multiple battery bodies 2, and a bracket 7 is arranged outside the battery body 2. The brackets 7 are fixedly connected to each other, and the protective outer plate 1 is fixedly connected to the bracket 7. The positive and negative ends of the battery body 2 are respectively fixedly connected with conductive sheets 19. A transmission conversion component is arranged on the conductive sheets 19 on both sides of the battery body 2. The transmission conversion component can skip the faulty battery in multiple battery connections to ensure stable battery connection.

[0028] Through the coordinated action of mechanical transmission and conductive components, the device realizes the efficient and reliable isolation of faulty batteries, significantly improves the stability and safety of multi-battery modules, and is suitable for high-demand application scenarios such as electric vehicles and energy storage systems.

[0029] Embodiment 2, please refer to Figures 1 - 8 , the transmission conversion component is a rotary fault skipping component. The rotary fault skipping component includes protective shells 3 arranged on both sides of the battery body 2. The side of the protective shell 3 away from the battery body 2 is fixedly connected with a transmission shell 4. A first selection screw rod 5 is rotatably arranged in the transmission shell 4. A top slider 10 is threadedly sleeved on the first selection screw rod 5. The side of the top slider 10 close to both sides of the battery body 2 is provided with a convex structure.

[0030] A mounting rod 17 is fixedly connected inside the transmission housing 4. A stator-rotor pin 11 is slidably penetrated through the mounting rod 17, and an elastic member 12 is sleeved on the stator-rotor pin 11. The stator-rotor pin 11 corresponds to the convex structure on one side of the top slider 10.

[0031] A second selection screw rod 6 is rotatably connected inside the protective housing 3. A rotating shaft 15 is threadedly sleeved on the second selection screw rod 6. An external hexagon block 14 is fixedly sleeved on the rotating shaft 15. A notch 16 is formed on one side of the external hexagon block 14. A rotating handle 8 is fixedly connected to the side wall of the rotating shaft 15, and the rotating handle 8 is arranged corresponding to the position of the notch 16.

[0032] An internal hexagon block 21 is sleeved outside the external hexagon block 14. A rotating sleeve 22 is fixedly sleeved outside the internal hexagon block 21. A transmission ring 20 is arranged between the rotating sleeves 22 and is slidably connected through the transmission ring 20. A positioning groove 18 is formed on the outer wall of the rotating sleeve 22. A skip conductive block 9 and a series conductive block 13 are respectively fixedly connected to both sides of the rotating sleeve 22, and the series conductive block 13 is correspondingly connected to the conductive sheet 19.

[0033] During the implementation of the present invention, for the battery failure skip transmission conversion device in the multi-battery module of the present invention, its core lies in realizing the rapid detection, precise positioning and electrical isolation of the faulty battery through the synergistic action of mechanical transmission and conductive components. The specific working principle is as follows: Fault detection and signal triggering BMS collaborative control: The power management system monitors parameters such as the voltage, current, temperature and internal resistance of each single battery in the multi-battery module in real time. When detecting that a certain battery shows fault characteristics such as abnormal voltage, sudden increase in internal resistance or over-high temperature, the BMS sends a control signal to the transmission conversion component to trigger the fault skip mechanism.

[0034] Selection screw rod drive and positioning: The transmission conversion component includes a first selection screw rod 5 and a second selection screw rod 6, and both rotate synchronously after receiving the BMS signal. The rotational movement of the screw rod is converted into the linear displacement of the top slider 10 through screw thread transmission, so that it axially moves to the position corresponding to the faulty battery. The convex structure of the top slider 10 cooperates with the stator-rotor pin 11, and with the assistance of an elastic member 12 such as a spring, the conductive connection mechanism adjacent to the faulty battery is locked to prevent misoperation during the switching process.

[0035] Separation of the rotating shaft 15: An external hexagon block 14 is fixed on the rotating shaft 15, and it forms a sliding meshing mechanism with the internal hexagon block 21. Driven by an electromagnetic coil or other linear actuators, the rotating shaft 15 slides axially to disengage the external hexagon block 14 from the internal hexagon block 21, providing an operating space for subsequent conductive switching.

[0036] Conductive switching: Rotate the rotating handle 8 manually or electrically, driving the rotating shaft 15 to rotate 360°, causing the conductive component fixed on the rotating sleeve 22 to switch its working state; the series-connected conductive block 13 disengages from the corresponding conductive sheet 19, disconnecting the series connection of the faulty battery; the bypass conductive block 9 forms a new low-impedance path with the adjacent conductive sheet 19, allowing the current to bypass the faulty battery and maintaining the electrical continuity of the module. This mechanical switching method avoids the contact arc problem of traditional relays or MOSFET switches, ensuring stable operation under high-current conditions.

[0037] Reset and system recovery: After the switching is completed, the electromagnetic coil is powered off, and the rotating shaft 15 axially returns under the action of the return spring, causing the outer hexagon block 14 to re-engage with the inner hexagon block 21, restoring the initial state of the transmission mechanism. The stator-rotor pin 11 is unlocked under the push of the elastic member 12, the selection screw rod rotates in the reverse direction, driving the top slider 10 to return to its position, waiting for the next fault trigger.

[0038] For a module containing N batteries, each battery is equipped with an independent transmission conversion component, which is controlled by the BMS in a time-sharing manner to achieve the rapid bypass of any single or multiple faulty batteries. During the operation of the module, the normal batteries remain in series connection, and only the faulty batteries are isolated, ensuring that the system output voltage and capacity are not significantly affected.

[0039] Mechanical non-contact switching: Adopting a pure mechanical transmission in cooperation with conductive blocks, avoiding the conduction loss and arc risk of electronic switches, and being applicable to high-current scenarios. Dual-screw precise positioning: Through the coordinated action of the selection screw rod and the top slider 10, ensuring the positioning accuracy of the faulty battery and avoiding misoperation.

[0040] Modular and expandable design: A single transmission conversion component can be independently controlled, supporting the flexible configuration and redundant design of multi-battery modules. BMS intelligent cooperation: Deeply integrated with the power management system to achieve a fully automated process of fault detection, positioning, and isolation.

[0041] Through the above technical solutions, the present invention effectively solves the problem of rapid isolation of faulty batteries in multi-battery modules, improving the reliability and safety of the system, and being applicable to high-demand application scenarios such as electric two-wheelers, electric three-wheelers, electric vehicles, and energy storage power stations.

[0042] Example 3, please refer to Figures 1 - 8 , the transmission conversion component includes a sliding bypass component. The sliding bypass component includes an insulating shell 29, the insulating shell 29 is fixedly connected to the bracket 7, a plurality of conductive rings 28 are fixedly connected inside the insulating shell 29, an insulating rod 26 is slidably arranged inside the conductive ring 28, and the upper and lower ends of the insulating rod 26 are respectively fixedly connected to the upper conductive section 27 and the lower conductive section 24.

[0043] The top of the upper conductive section 27 is fixedly connected to a conductive connecting rod 25. The conductive connecting rod 25 is of a U-shaped structure. The conductive connecting rods 25 are cross-connected. The bottom of the inner part of the insulating shell 29 is fixedly connected to a series sleeve 23. The series sleeve 23 is slidably connected to two adjacent lower conductive sections 24.

[0044] Structural configuration: The insulating shell 29 is fixed to the battery module bracket 7, and multiple groups of concentrically arranged annular conductive rings 28 are provided inside; physical isolation is carried out between the conductive rings 28 through an insulating layer to form independent conductive channels; the insulating rod 26 vertically penetrates the conductive rings 28, and its upper and lower ends are respectively integrated with an upper conductive section 27 and a lower conductive section 24; the U-shaped conductive connecting rod 25 adopts a cross-interconnection design to form a series topology between the batteries.

[0045] Normal working state: The insulating rod 26 is in the upper position, and the upper conductive section 27 is in close contact with the conductive ring 28; Current path: Battery positive pole → Conductive ring 28 → Upper conductive section 27 → Conductive connecting rod 25 → Adjacent battery to form a complete circuit.

[0046] Fault determination: The BMS real-time monitors that the voltage of a certain battery is abnormal; the system locates the position of the faulty battery and activates the corresponding sliding skip component; the electromagnetic actuator or linear motor drives the insulating rod 26 to move downward; the upper conductive section 27 disengages from the original contact surface of the conductive ring 28 and moves to the non-conductive area at the lower part of the insulating shell 29.

[0047] Principle of electrical isolation implementation: New conductive topology reconstruction: The lower conductive section 24 and the series sleeve 23 form a new conductive path; the cross design of the U-shaped conductive connecting rod 25 ensures that: the current upstream of the faulty battery → Conductive connecting rod 25 → Skip the faulty battery → Downstream battery; Dual isolation guarantee: Mechanical isolation: The insulating section of the insulating rod 26 blocks the current path between the conductive rings 28.

[0048] Dynamic response characteristics: The full mechanical action time is faster than that of an electronic switch; the displacement control accuracy is higher, ensuring contact reliability; Maintenance and optimization design: The state visualization window can observe the position of the conductive rod; The modular components support single replacement.

[0049] System reset process: After the BMS confirms that the fault is eliminated, it sends a reset instruction; the reset spring pushes the insulating rod 26 back to its position, and electric assistance can be selected; the contact pressure sensor verifies the connection state of the conductive ring 28; after the system self-check is passed, it resumes normal operation.

[0050] This solution realizes the physical-level isolation of faulty batteries through an innovative sliding conductive reconstruction mechanism, and combines the response speed of an electronic system and the reliability of a mechanical device. Its modular design is particularly suitable for vehicle-mounted power battery systems and large-scale energy storage devices that require high safety, providing a new technical path for solving the single-point fault problem of battery modules.

[0051] All the standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the attached drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated herein. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0052] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more unless otherwise specifically defined.

[0053] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "below", and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0055] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference may be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A battery failure skipping transmission conversion device in a multi-battery module, comprising a protective outer plate (1), characterized in that: Two protective outer plates (1) are provided, and a battery body (2) is provided between the two protective outer plates (1), a plurality of battery bodies (2) are provided, a bracket (7) is provided outside the battery body (2), the brackets (7) are fixedly connected, the protective outer plates (1) and the brackets (7) are fixedly connected, the positive and negative ends of the battery body (2) are respectively fixedly connected to conductive sheets (19), and transmission conversion components are provided on the conductive sheets (19) on both sides of the battery body (2), and the transmission conversion components can skip faulty batteries in multiple battery connections to ensure stable battery connection.

2. A battery failure skipping transmission conversion device in a multi-battery module according to claim 1, characterized in that: The transmission conversion assembly is a rotary fault skip assembly, which comprises a protective shell (3) arranged on both sides of a battery body (2), the protective shell (3) being fixedly connected to a transmission shell (4) on a side away from the battery body (2), a first position selection screw rod (5) being rotatably arranged in the transmission shell (4), a top slider (10) being threadedly sleeved on the first position selection screw rod (5), and the top slider (10) being arranged as a protruding structure near both sides of the battery body (2).

3. A battery failure skipping transmission conversion device in a multi-battery module according to claim 2, characterized in that: The transmission housing (4) is fixedly connected with a mounting rod (17), a stator and rotor pin (11) is slidably penetrated on the mounting rod (17), an elastic member (12) is sleeved on the stator and rotor pin (11), and the stator and rotor pin (11) corresponds to a protruding structure on one side of the top sliding block (10).

4. A battery failure skipping transmission conversion device in a multi-battery module according to claim 3, characterized in that: The protective shell (3) is rotatably connected to the second position selection screw rod (6), the second position selection screw rod (6) is threadedly sleeved with a rotation shaft (15), an outer hexagonal block (14) is fixedly sleeved on the rotation shaft (15), a notch (16) is provided on one side of the outer hexagonal block (14), and a rotating hand (8) is fixedly connected to the side wall of the rotating shaft (15), and the rotating hand (8) and the notch (16) are arranged in a corresponding position.

5. A battery failure skipping transmission conversion device in a multi-battery module according to claim 4, characterized in that: The outer hexagonal block (14) is sleeved with an inner hexagonal block (21), and the inner hexagonal block (21) is fixedly sleeved with a rotating sleeve (22) on its outer side. The two sides of the rotating sleeve (22) are respectively fixedly connected to the skipping conductive block (9) and the series conductive block (13), and the series conductive block (13) is correspondingly connected to the conductive sheet (19).

6. The device for skipping transmission conversion when battery failure occurs in a multi-battery module according to claim 1, characterized in that: The transmission conversion assembly comprises a sliding skip assembly, which comprises an insulating shell (29), the insulating shell (29) being fixedly connected to a bracket (7), a conductive ring (28) being fixedly connected inside the insulating shell (29), a plurality of conductive rings (28) being provided, an insulating rod (26) being slidably provided inside the conductive ring (28), and upper and lower ends of the insulating rod (26) being fixedly connected to an upper conductive segment (27) and a lower conductive segment (24) respectively.

7. A battery failure skipping transmission conversion device in a multi-battery module according to claim 6, characterized in that: The top of the upper conductive segment (27) is fixedly connected to a conductive connecting rod (25), the conductive connecting rod (25) is a U-shaped structure, the conductive connecting rod (25) is cross-connected, the bottom of the insulating shell (29) is fixedly connected to a series sleeve (23), and the series sleeve (23) is slidably connected to two adjacent lower conductive segments (24).

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