Mechanism device for freely switching series-parallel connection of batteries in battery module

Abstract

The invention discloses a battery series-parallel connection free conversion mechanism device in a battery module, which relates to the technical field of new energy batteries and comprises a battery bracket, a battery body and an intelligent series-parallel connection conversion assembly. The positive electrode and the negative electrode of the battery body are provided with high-conductivity electrode plates, and flexible switching of connection modes is realized through two original conversion mechanisms: in the first mode, a precise sliding type structure is adopted, and mode switching in the vertical direction is realized through cooperation of upper and lower conductive rods driven by insulating columns and a conversion conductive ring; the second type is that a rotary structure is adopted, mode conversion in the horizontal direction is completed through accurate alignment of a multi-angle conductive head arranged on a conversion barrel and a fixed conductive plate, and rapid and stable switching of a battery module between a series connection mode and a parallel connection mode is realized through innovative mechanical structural design of the device; the key technical problem that a traditional fixedly connected battery module cannot dynamically adapt to different working condition requirements is effectively solved, the use is more flexible, and the use effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and specifically to a mechanism device for freely converting the series and parallel connections of battery strings in a battery module. Background Art

[0002] Existing battery modules usually adopt fixed series or parallel connection methods. Such a design has significant limitations in practical applications. For example, series connection can provide high voltage but limited capacity, while parallel connection can increase capacity but lower voltage. Once a traditional battery module is assembled, its connection method cannot be changed, making it difficult to adapt to the dynamic requirements under different working conditions. In addition, due to the differences in battery capacity, voltage, internal resistance, etc. formed during the production and manufacturing process of individual batteries, the fixed connection method may not be able to actively balance the energy of each individual battery in the battery pack, and the maximum energy of the individual batteries and the battery pack cannot be exerted, resulting in limited overall energy utilization of the battery pack. Moreover, due to the energy differences of individual batteries, it further affects the overall performance and lifespan of the battery pack during long-term use.

[0003] Currently, some technologies attempt to achieve series-parallel switching through external circuits or switches. However, such solutions are often complex in structure, costly, and prone to generating arcs or poor contacts during the switching process, affecting reliability and safety. Therefore, there is an urgent need for a mechanism device with a simple structure, convenient operation, and capable of quickly and stably realizing the free conversion of battery series and parallel connections to meet the requirements of diverse application scenarios. 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 mechanism device for freely converting the series and parallel connections of battery strings in a battery module, and to realize the conversion and adjustment of the connection method between battery unit bodies by setting a series-parallel conversion component, so as to solve the problems in the above-mentioned prior art.

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

[0006] A mechanism device for freely converting the series and parallel connections of battery strings in a battery module, including a battery bracket, and further including: battery bodies arranged in the battery bracket. There are multiple groups of the battery brackets. Conductive electrode sheets are fixedly arranged on the positive and negative poles of the battery bodies respectively. The two ends of the battery bracket are fixedly connected to mounting shells. A series-parallel conversion component is arranged in the mounting shells. The series-parallel conversion component can adjust the connection method with the conductive electrode sheets to realize the parallel and series connection methods between multiple battery bodies.

[0007] The series-parallel conversion component includes a conversion conductive ring fixedly arranged in the mounting shell. A conductive sheet is fixedly connected to one side of the conversion conductive ring close to the conductive electrode sheet, and the conductive sheet is electrically connected to the conductive electrode sheet.

[0008] An insulating column is slidably arranged in the conversion conductive circle. The upper and lower parts of the insulating column are respectively fixedly connected with an upper conductive rod and a lower conductive rod. The top of the upper conductive rod is fixedly connected with a conductive rod, and an insulating sleeve is sleeved outside the conductive rod.

[0009] The insulating sleeve drives the upper and lower conductive rods at the upper and lower ends of the insulating column to move up or down through the conductive rod, so as to realize series-parallel conversion.

[0010] The series-parallel conversion assembly includes a conversion column rotatably arranged in the installation shell. A conversion cylinder is fixedly sleeved on the conversion column. An installation groove is opened on the conversion cylinder. A first conductive head and a second conductive head are respectively arranged in the installation groove. One ends of the first conductive head and the second conductive head extend to the side wall of the conversion cylinder.

[0011] One side of the conversion cylinder is fixedly connected with a series conductive head. A conductive plate is fixedly arranged in the installation shell on one side of the series conductive head. The conductive plate is electrically connected with the conductive electrode sheet.

[0012] When the conversion column drives the first conductive head, the second conductive head and the series conductive head on the conversion cylinder to rotate to the corresponding positions of the conductive electrode sheet, series-parallel conversion is realized.

[0013] The present invention has the following beneficial effects: Through the innovative mechanical series-parallel conversion design, the present invention solves the inherent problems of traditional battery modules and has the following remarkable advantages: High-voltage output (series): suitable for scenarios such as motor drive and high-voltage fast charging. Large-capacity output (parallel): meeting the needs of long-range energy storage or low-power continuous power supply. Hybrid mode (partial series-parallel): can be flexibly configured for special working conditions to improve system energy efficiency.

[0014] Significantly improve battery life: Through the active equalization technology, dynamically adjust the load of each single battery during the switching process to avoid overcharging / overdischarging caused by energy imbalance; reduce the dependence on traditional equalization circuits and reduce system complexity; efficient and safe switching mechanism;

[0015] Sliding design: Adopt the conductive rod structure guided by the insulating column to ensure stable contact pressure, reduce contact resistance and avoid heat loss. Rotary design: Through the butt joint of the precision-machined conductive head and the conductive plate, arc-free switching is realized, which is suitable for high-frequency operations. Double insulation protection (such as insulating sleeve, isolation groove) completely eliminates the short-circuit risk.

[0016] Modularity and scalability: Standardized battery bracket and conversion component design, supporting rapid expansion of the scale of battery modules; compatible with various battery types (lithium-ion, solid-state battery, etc.) and adapting to future technology iterations.

[0017] Low cost and high reliability: The pure mechanical structure eliminates the need for complex control circuits, reducing manufacturing costs and maintenance difficulties. Key components (such as conductive sheets and conversion cylinders) are made of wear-resistant alloys or gold-plated processes to ensure conductive stability for long-term use.

[0018] Green energy-saving: By optimizing energy distribution, reduce ineffective losses; extend battery life and indirectly reduce resource waste, in line with the concept of sustainable development. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a mechanism device for freely converting the series and parallel connections of battery strings in a battery module.

[0020] Figure 2 It is a schematic diagram of the structure of one of the series-parallel conversion components in a mechanism device for freely converting the series and parallel connections of battery strings in a battery module.

[0021] Figure 3 It is Figure 2 The enlarged schematic diagram of A in

[0022] Figure 4 It is a schematic diagram of the structure of another series-parallel conversion component in a mechanism device for freely converting the series and parallel connections of battery strings in a battery module.

[0023] Figure 5 It is Figure 4 The internal structure schematic diagram of the series-parallel conversion component in

[0024] In the figure: 1. Battery bracket; 2. Battery body; 3. Insulating sleeve; 4. Upper conductive rod; 5. Conductive sheet; 6. Installation shell; 7. Insulating column; 8. Conductive electrode sheet; 9. Conductive rod; 10. Lower conductive rod; 11. Conversion conductive ring; 12. Conversion column; 13. First conductive head; 14. Series conductive head; 15. Conductive plate; 16. Conversion cylinder; 17. Second conductive head; 18. Installation groove. Detailed Embodiment

[0025] 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.

[0026] Embodiment 1, please refer to Figures 1-5, A mechanism device for freely converting the series and parallel connections of battery strings in a battery module, including a battery bracket 1, and further including: a battery body 2 fixedly arranged in the battery bracket 1. There are multiple groups of the battery brackets 1. Conductive electrode plates 8 are fixedly arranged at the positive and negative poles of the battery body 2 respectively, and the conductive electrode plates 8 are electrically connected to the battery body 2. Both ends of the battery bracket 1 are fixedly connected to an installation shell 6, and a series-parallel conversion component is arranged in the installation shell 6. The series-parallel conversion component can adjust the connection mode with the conductive electrode plates 8 to realize the parallel and series connection modes between multiple battery bodies 2;

[0027] The series-parallel conversion component includes a conversion conductive ring 11 fixedly arranged in the installation shell 6. A conductive sheet 5 is fixedly connected to one side of the conversion conductive ring 11 close to the conductive electrode plate 8, and the conductive sheet 5 is electrically connected to the conductive electrode plate 8; An insulating column 7 is slidably arranged in the conversion conductive ring 11. An upper conductive rod 4 and a lower conductive rod 10 are respectively fixedly connected to the top and bottom of the insulating column 7. A conductive rod 9 is fixedly connected to the top of the upper conductive rod 4, and an insulating sleeve 3 is sleeved outside the conductive rod 9; The insulating sleeve 3 drives the upper conductive rod 4 and the lower conductive rod 10 at the upper and lower ends of the insulating column 7 to move up or down through the conductive rod 9 to realize series-parallel conversion;

[0028] When actually in use, when the upper conductive rod 4 moves down to the in-place position, multiple battery bodies 2 are in a parallel state, and when the lower conductive rod 10 moves up to the in-place position, multiple battery bodies 2 are in a series state. In this way, when the battery body 2 is actually installed and used, it can realize the rapid conversion between series and parallel, which is suitable for different usage requirements and is very flexible compared with traditional welded batteries; The present invention not only breaks through the connection limitations of traditional battery modules, but also realizes efficient, safe and flexible free switching between series and parallel through an innovative mechanical conversion mechanism, providing a better solution for new energy applications.

[0029] Example 2, please refer to Figures 1-5 , The series-parallel conversion component includes a conversion column 12 rotatably arranged in the installation shell 6. A conversion cylinder 16 is fixedly sleeved on the conversion column 12. An installation groove 18 is opened on the conversion cylinder 16, and a first conductive head 13 and a second conductive head 17 are respectively arranged in the installation groove, and one ends of the first conductive head 13 and the second conductive head 17 extend to the side wall of the conversion cylinder 16.

[0030] A series conductive head 14 is fixedly connected to one side of the conversion cylinder 16, and a conductive plate 15 is fixedly arranged in the installation shell 6 on one side of the series conductive head 14, and the conductive plate 15 is electrically connected to the conductive electrode plate 8.

[0031] When the conversion column 12 drives the first conductive head 13, the second conductive head 17 and the series conductive head 14 on the conversion cylinder 16 to rotate to the corresponding positions of the conductive electrode plate 8, series-parallel conversion is realized.

[0032] During actual use, by adjusting the conversion column 12, the conversion cylinder 16 can be driven to rotate. When the conversion cylinder 16 rotates to a position where the conductive electrode sheet 8 is between the first conductive head 13 and the second conductive head 17, the parallel connection between multiple battery bodies 2 is achieved; when the conversion cylinder 16 rotates to a position where the series conductive head 14 corresponds to the conductive electrode sheet 8, the series connection between multiple battery bodies 2 is achieved.

[0033] During actual use, in the battery module composed of multiple single batteries of the device, the connection state can be changed, freely converted from series to parallel and from parallel to series, actively balancing the energy of each battery, enabling each battery to exert its maximum energy, improving the discharge efficiency of the battery module, and extending the service life of the battery.

[0034] The present invention realizes the free conversion between series and parallel in two main ways: Sliding conversion: Parallel state: The insulating sleeve 3 drives the conductive rod 9 to move downward, making the upper conductive rod 4 contact the conversion conductive ring 11, and the positive and negative electrodes of the battery are directly connected through the conductive sheet 5 to form a parallel circuit. Series state: The insulating sleeve 3 is lifted, and the lower conductive rod 10 contacts the conductive electrode sheet 8 of the adjacent battery, and the current flows through multiple batteries in sequence to achieve series connection.

[0035] Rotary conversion: Parallel state: The conversion column 12 drives the conversion cylinder 16 to rotate, making the first conductive head 13 and the second conductive head 17 dock with the conductive electrode sheet 8 of the adjacent battery to form a parallel circuit. Series state: The conversion cylinder 16 rotates until the series conductive head 14 aligns with the conductive plate 15, and the current passes through the series conductive head 14 to bridge multiple batteries to complete the series connection.

[0036] Both ways change the connection relationship of the conductive components through mechanical actions to achieve fast and stable mode switching. At the same time, insulating materials such as insulating columns 7 and insulating sleeves 3 ensure operation safety.

[0037] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding in the existing technology. The machinery, parts, and equipment all adopt conventional models in the existing technology. In addition, the circuit connection adopts the conventional connection method in the existing technology, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0038] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood 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 "multiple" is two or more, unless otherwise specifically defined.

[0039] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed 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 components or the interaction relationship between two components. 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.

[0040] In the present invention, unless otherwise clearly defined or 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 has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" 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 has a lower horizontal height than the second feature.

[0041] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples", etc. mean 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 descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. 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.

[0042] In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0043] 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 recorded 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 in the protection scope of the present invention.

Claims

1. A mechanism device for freely switching between series and parallel connection of batteries in a battery module, comprising a battery holder (1), characterized in that: Also includes: A battery body (2) is arranged in a battery holder (1), the battery holder (1) being provided with a plurality of groups, the positive pole and the negative pole of the battery body (2) being respectively fixedly provided with conductive electrode sheets (8), the two ends of the battery holder (1) being fixedly connected to a mounting shell (6), a series-parallel conversion component being arranged in the mounting shell (6), the series-parallel conversion component being able to adjust the connection mode with the conductive electrode sheets (8) to realize parallel and series connection modes between the plurality of battery bodies (2).

2. A mechanism device for freely switching between series and parallel connection of batteries in a battery module according to claim 1, characterized in that: The series-parallel conversion assembly comprises a conversion conductive ring (11) fixedly arranged in a mounting shell (6); the conversion conductive ring (11) is fixedly connected to the conductive sheet (5) on one side close to the conductive electrode sheet (8); and the conductive sheet (5) and the conductive electrode sheet (8) are electrically connected.

3. A mechanism device for freely switching between series and parallel connection of batteries in a battery module according to claim 2, characterized in that: An insulating column (7) is slidably arranged in the conversion conductive ring (11); the top and bottom of the insulating column (7) are respectively fixedly connected to an upper conductive rod (4) and a lower conductive rod (10); the top of the upper conductive rod (4) is fixedly connected to a conductive rod (9); and an insulating sleeve (3) is sleeved on the outside of the conductive rod (9).

4. A mechanism device for freely switching between series and parallel connection of batteries in a battery module according to claim 3, characterized in that: The insulating sleeve (3) drives the upper conductive rod (4) and the lower conductive rod (10) at the upper and lower ends of the insulating column (7) to move upward or downward through the conductive rod (9), thereby realizing series-parallel conversion.

5. The mechanism device for freely switching between series and parallel connection of batteries in a battery module according to claim 1, characterized in that: The series-parallel conversion assembly comprises a conversion column (12) rotatably arranged in a mounting shell (6), a conversion cylinder (16) being fixedly sleeved on the conversion column (12), a mounting groove (18) being provided on the conversion cylinder (16), a first conductive head (13) and a second conductive head (17) being respectively arranged in the mounting groove (18), and one end of the first conductive head (13) and the second conductive head (17) extending to a side wall of the conversion cylinder (16).

6. A mechanism device for freely switching between series and parallel connection of batteries in a battery module according to claim 5, characterized in that: One side of the conversion cylinder (16) is fixedly connected to the series conductive head (14), and a conductive plate (15) is fixedly arranged in the mounting shell (6) on one side of the series conductive head (14), and the conductive plate (15) is electrically connected to the conductive electrode sheet (8).

7. A mechanism device for freely switching between series and parallel connection of batteries in a battery module according to claim 6, characterized in that: When the conversion column (12) drives the first conductive head (13), the second conductive head (17) and the series conductive head (14) on the conversion cylinder (16) to rotate to positions corresponding to the conductive electrode sheet (8), series-parallel conversion is achieved.

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