A power battery

Abstract

The application provides a power battery. The power battery comprises a box body, a box cover, a battery cell module, a protection plate and multifunctional supports. The box body is provided with an opening at the top end. The battery cell module is put into the box body through the opening. The opening of the box body is closed by the box cover. Each of the opposite sides of the inside of the box body is connected with one multifunctional support. The multifunctional support comprises a vertical stand plate. The lower end of the stand plate is provided with a horizontal pressing plate. The pressing plates of the two multifunctional supports press the battery cell module downward. The middle part of the stand plate is provided with a horizontal supporting plate. The supporting plates of the two multifunctional supports are directed to the inside of the box body. The bottom end of the protection plate is connected with the supporting plates of the two multifunctional supports respectively.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a power battery. Background Technology

[0002] Lithium-ion batteries are the mainstream energy storage solution for electric bicycles, and their module structure design directly affects the battery's energy density, production efficiency, and maintenance costs. Traditional lithium-ion batteries typically use a multi-component bracket structure, such as independent pressure strips, module fixing brackets, and protection board brackets. These components need to be installed separately and fastened with a large number of screws, which mainly presents the following problems: 1. Complex structure and redundant components: Traditional brackets have a single function and require multiple independent components (such as pressure strips, fixing brackets, and protection plate brackets) to work together, resulting in a large number of components, occupying internal space of the module, and limiting the improvement of battery capacity and energy density.

[0003] 2. Low installation and maintenance efficiency: Each component needs to be installed in stages, with a large number of screws and complicated steps, which is time-consuming and labor-intensive in production; disassembly is difficult during after-sales maintenance, increasing labor and time costs.

[0004] 3. Weight and cost issues: Traditional brackets often adopt a heavy design to meet strength requirements, which increases the overall weight of the module and affects the goal of lightweighting; the production and procurement costs of multiple components are high, resulting in poor economic efficiency.

[0005] 4. Low space utilization: The scattered layout of independent components makes it difficult to achieve a compact design, and the internal space of the module is not fully utilized, which restricts the optimization of battery performance. Summary of the Invention

[0006] To address at least one of the technical problems mentioned in the background art, embodiments of this application provide a power battery, including a housing, a housing cover, a cell module, a protection board, and a multi-functional bracket; The top of the housing has an opening, through which the battery cell module is placed into the housing, and the opening of the housing is closed by the housing cover; The multifunctional bracket is connected to each of the opposite sides inside the box. The multifunctional bracket includes a vertical plate, and the lower end of the vertical plate has a horizontal pressure plate. The pressure plates of the two multifunctional brackets press the battery cell module downwards. The upright plate has a horizontal support plate in the middle, and the support plates of the two multifunctional brackets face the inside of the box. The bottom two sides of the protective plate are respectively connected to the support plates of the two multifunctional brackets.

[0007] In one possible implementation, the power battery provided in this application embodiment has a vertically downward bending plate on each of the opposite sides of the pressure plate, and the two bending plates respectively clamp the opposite sides of the cell module from the side.

[0008] In one possible implementation, the power battery provided in this application embodiment has two vertically upward connecting plates at the upper end of the upright plate, and the connecting plates have a first screw hole; The inner wall of the box has first through holes that correspond in number and position to the first screw holes on the connecting plate; the connecting plate is fixed to the box by bolts passing through the first through holes and connecting to the first screw holes.

[0009] In one possible implementation, the power battery provided in this application embodiment has two connecting posts at the top of the support plate, and the connecting posts have second screw holes; The protective plate has second through holes with the same number and position as the second screw holes on the support plate. The protective plate is fixed to the support plate by bolts passing through the second through holes and connecting to the second screw holes.

[0010] Beneficial effects: A single component can replace the pressure strip, fixing bracket, and protection plate bracket, achieving "multi-purpose use," significantly reducing the number of parts and simplifying the module structure. It reduces bracket weight, indirectly increasing the energy density of the battery module and contributing to product lightweighting goals. The reduced number of parts decreases installation steps, simplifies the production process, saves material and processing costs, reduces the complexity of production and after-sales maintenance, and further lowers the total life cycle cost. The integrated design maximizes the use of the battery module's internal space, providing possibilities for increasing cell capacity or optimizing heat dissipation layout, indirectly improving battery performance. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of the power battery provided in the embodiments of this application; Figure 2 This is an exploded schematic diagram of a power battery provided in an embodiment of this application; Figure 3 This is a schematic diagram of the cell module in the power battery provided in the embodiments of this application; Figure 4This is a schematic diagram of a multi-functional bracket in a battery provided in an embodiment of this application; Figure 5 This is a schematic diagram of the power battery structure provided in the embodiments of this application (without the cover).

[0013] Explanation of reference numerals in the attached figures 10-Box; 11-First through hole; 20 - Box lid; 30-Cell module; 40 - Protection board; 41 - Second through hole; 50-Multi-functional stand; 51-Upright board; 52-Pressure plate; 521 - Bending plate; 53-Support plate; 531-Connecting Post; 532 - Second screw hole; 54-Connecting plate; 541 - First screw hole. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0015] Figure 1 This is a schematic diagram of the structure of the power battery provided in the embodiments of this application; Figure 2 This is an exploded schematic diagram of a power battery provided in an embodiment of this application; Figure 3 This is a schematic diagram of the cell module in the power battery provided in the embodiments of this application; Figure 4 This is a schematic diagram of a multi-functional bracket in a battery provided in an embodiment of this application; Figure 5 This is a schematic diagram of the power battery structure provided in the embodiments of this application (without the cover).

[0016] See Figures 1 to 5 As shown, this application embodiment provides a power battery, including a housing 10, a housing cover 20, a cell module 30, a protection board 40, and a multi-functional bracket 50, wherein: The housing 10 is a square box with an opening at the top, serving as the outer casing of the power battery. The battery cell module 30 is placed into the housing 10 through the opening, and the opening of the housing 10 is sealed by the housing cover 20, thereby isolating the battery cell module 30 from the external environment.

[0017] A multi-functional bracket 50 is connected to each of the opposite sides inside the housing 10. The multi-functional bracket 50 is used to support the protection plate 40 and fix the battery cell module 30.

[0018] The multi-functional bracket 50 is an integral structure, comprising a vertical support plate 51, a horizontal pressure plate 52 at the lower end of the support plate 51, and a horizontal support plate 53 in the middle of the support plate 51. The pressure plates 52 of the two multi-functional brackets 50 press down on the battery cell module 30, thereby preventing the battery cell module 30 from moving vertically within the housing 10. The support plates 53 of the two multi-functional brackets 50 face inwards towards the housing 10, and the bottom ends of the protective plate 40 are respectively connected to the support plates 53 of the two multi-functional brackets 50.

[0019] During assembly, the battery cell module 30 is placed into the housing 10 through the opening at the top of the housing 10. A multi-functional bracket 50 is placed on each of the opposite edges of the battery cell module 30. The pressure plate 52 of the multi-functional bracket 50 is in close contact with the surface of the battery cell module 30. After the multi-functional bracket 50 is connected and fixed to the inner wall of the housing 10, the protective plate 40 is placed on the support plate 53 of the two multi-functional brackets 50 and connected to the support plate 53 of the two multi-functional brackets 50. Finally, the housing cover 20 is closed at the opening at the top of the housing 10 to complete the assembly.

[0020] The aforementioned multi-functional bracket 50 allows a single component to replace the pressure strip, fixing bracket, and protection plate 40 bracket, achieving "one item, multiple uses," significantly reducing the number of parts and simplifying the module structure. This reduces bracket weight, indirectly increasing the energy density of the battery module and contributing to product lightweighting goals. The reduced number of parts also decreases installation steps, simplifies the production process, saves material and processing costs, reduces the complexity of production and after-sales maintenance, and further lowers the total lifecycle cost. The integrated design maximizes the use of the battery module's internal space, providing possibilities for increasing cell capacity or optimizing heat dissipation layout, indirectly improving battery performance.

[0021] Specifically, each side of the pressure plate 52 has a vertically downward bending plate 521, and the two bending plates 521 respectively clamp the opposite sides of the battery cell module 30 from the side. The two bending plates 521 can further restrict the lateral displacement of the battery cell module 30, so that the battery cell module 30 can be fixed more firmly.

[0022] Specifically, the upper end of the upright plate 51 has two vertically upward connecting plates 54, each connecting plate 54 having a first screw hole 541. The inner wall of the housing 10 has first through holes 11 corresponding to the number and position of the first screw holes 541 on the connecting plates 54. The connecting plates 54 are fixed to the housing 10 by bolts passing through the first through holes 11 and connecting to the first screw holes 541.

[0023] Specifically, the top of the support plate 53 has two connecting posts 531, and the connecting posts 531 have second screw holes 532; the protective plate 40 has second through holes 41 corresponding to the number and position of the second screw holes 532 on the support plate 53, and the protective plate 40 is fixed to the support plate 53 by bolts passing through the second through holes 41 and connecting to the second screw holes 532.

[0024] In the description of the embodiments of this application, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection or an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. The terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "multiple" means two or more, unless otherwise precisely specified.

[0025] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. For example, they can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power battery, characterized in that, Includes the enclosure, cover, battery module, protection board, and multi-functional bracket; The top of the housing has an opening, through which the battery cell module is placed into the housing, and the opening of the housing is closed by the housing cover; The multifunctional bracket is connected to each of the opposite sides inside the box. The multifunctional bracket includes a vertical plate, and the lower end of the vertical plate has a horizontal pressure plate. The pressure plates of the two multifunctional brackets press the battery cell module downwards. The upright plate has a horizontal support plate in the middle, and the support plates of the two multifunctional brackets face the inside of the box. The bottom two sides of the protective plate are respectively connected to the support plates of the two multifunctional brackets.

2. The power battery according to claim 1, characterized in that, The pressure plate has a vertically downward bending plate on each of its opposite sides, and the two bending plates clamp the opposite sides of the battery cell module from the side.

3. The power battery according to claim 1, characterized in that, The upper end of the upright plate has two vertically upward connecting plates, and the connecting plates have a first screw hole; The inner wall of the box has first through holes that correspond in number and position to the first screw holes on the connecting plate; the connecting plate is fixed to the box by bolts passing through the first through holes and connecting to the first screw holes.

4. The power battery according to claim 1, characterized in that, The top of the support plate has two connecting posts, and the connecting posts have a second screw hole; The protective plate has second through holes with the same number and position as the second screw holes on the support plate. The protective plate is fixed to the support plate by bolts passing through the second through holes and connecting to the second screw holes.

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