Power battery assembly, design method thereof and battery module

Abstract

The application provides a power battery assembly, a design method thereof and a battery module. The power battery assembly comprises an upper pressing plate, a bottom supporting plate located below the upper pressing plate and connected with the upper pressing plate, a signal acquisition plate located between the upper pressing plate and the bottom supporting plate, and a plurality of quick plug-in electrical connection assemblies located between the upper pressing plate and the bottom supporting plate and connected with the signal acquisition plate. The quick plug-in electrical connection assembly has an electrical plug channel, a locking state in which a power cell is inserted into the electrical plug channel, and an unlocking state in which the power cell is unlocked from the electrical plug channel. After the plurality of power cells are clamped into the quick plug-in electrical connection assembly, an electrical connection and a signal acquisition channel can be quickly formed, the assembly difficulty of a battery information acquisition assembly is reduced, the production efficiency and product reliability are improved, and the production manufacturing cost is saved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more specifically, to a power battery assembly and its design method, and a battery module. Background Technology

[0002] With the rapid development of electric vehicles, the sales of electric vehicles have also increased year by year. When the battery is assembled into a module, its electrical connection is made by welding aluminum bars to the positive and negative terminals of the battery. The welding strength is adjusted by adjusting the welding parameters. This process is not only slow, but also results in welding slag splashes and residues affecting safety. Moreover, there are often cases where the welding is not strong due to equipment parameter settings. Summary of the Invention

[0003] The main objective of this invention is to provide a power battery assembly and its design method, as well as a battery module, to solve the problems of slow battery module assembly speed and weak electrical connections due to welding in the prior art.

[0004] To achieve the above objectives, according to one aspect of the present invention, a power battery assembly is provided, comprising: an upper pressure plate; a bottom support plate located below the upper pressure plate and connected to the upper pressure plate; a signal acquisition board located between the upper pressure plate and the bottom support plate; and a plurality of quick-connect electrical connection assemblies located between the upper pressure plate and the bottom support plate, the plurality of quick-connect electrical connection assemblies being connected to the signal acquisition board, each quick-connect electrical connection assembly having an electrical insertion channel, a locking state for inserting a battery cell into the electrical insertion channel, and an unlocking state for unlocking the battery cell from the electrical insertion channel.

[0005] Furthermore, at least one quick-connect electrical connection assembly includes: two annular bases, each annular base having a receiving space, an inner pressure sleeve being provided within the receiving space, a limiting ring being provided at the top of the inner pressure sleeve, the inner circle of the limiting ring forming a channel for inserting the power supply core, an installation space being formed between the limiting ring and the bottom of the receiving space, and an elastic clamping assembly being provided within the installation space, the elastic clamping assembly having a locked state and an unlocked state.

[0006] Furthermore, the elastic clamping assembly includes: a bottom spring located within the mounting space, abutting against the annular base, the bottom spring including a plurality of first spring leaves arranged circumferentially along the receiving space; and a top spring located within the mounting space, the top spring including a plurality of second spring leaves arranged circumferentially along the receiving space, the first spring leaves and the second spring leaves being alternately inserted, the middle portions of the first spring leaves and the second spring leaves being bent toward one side of the geometric central axis of the annular base, when the elastic clamping assembly is in the locked state, the first spring leaves and the second spring leaves are in the initial position, and when the elastic clamping assembly is in the unlocked state, the first spring leaves and the second spring leaves deform a preset distance toward the outer side of the annular base.

[0007] Furthermore, the battery cell includes a positive terminal and a negative terminal, each of which is provided with an insert. A first spring or a second spring is provided with a limiting hole. When the quick-connect electrical connection assembly is in the locked position, the insert can be inserted into the limiting hole.

[0008] Furthermore, the base plate includes: multiple limiting protrusions, which form a first limiting space and a second limiting space on the base plate. The first limiting space and the second limiting space are connected and arranged in communication. The signal acquisition board is located in the first limiting space, and the quick-connect electrical connection component is located in the second limiting space.

[0009] Furthermore, the base plate also includes a first flange portion, which is disposed on both sides of the base plate along the length direction, and the upper surface of the first flange portion is flush with the limiting protrusion.

[0010] Furthermore, the upper pressure plate includes a second flange portion, which is disposed on both sides of the upper pressure plate along its length direction, and is connected to the first flange portion.

[0011] Furthermore, the quick-connect electrical assembly also includes a base plate, which is connected to an annular base. A connection area is provided between the two annular bases on the base plate. Multiple clearance channels for the annular bases to pass through are provided on the upper pressure plate. A protrusion is provided between two adjacent clearance channels. The protrusion is provided on the bottom surface of the upper pressure plate. Each protrusion has a limiting arc surface on the side facing the axis of the clearance channel.

[0012] Furthermore, the upper pressure plate also includes a total electrode output opening and a total signal output interface. The total electrode output opening is located at one end of the upper pressure plate, and the total signal output interface is located at the other end of the upper pressure plate.

[0013] According to another aspect of the present invention, a design method for a power battery assembly is provided, comprising:

[0014] Step S1: Design the module topology based on the layout of electrical components within the battery pack;

[0015] Step S2: Based on the module topology, battery pack voltage and power requirements, and high-voltage and low-voltage principles, determine the required voltage and power values ​​for a single module;

[0016] Step S3: Based on the voltage and power requirements of a single module, determine the number of cells to be connected in series and in parallel, the conduction current value of the quick-connect components, and the number of quick-connect components required for the module.

[0017] Step S4: Set the cross-sectional area of ​​the annular base according to the conduction current value of the quick-connect electrical connection assembly, and confirm the distance between the battery cells and the length of the annular base according to the requirements of the battery cell expansion gap and the thickness of the battery cell spacer heat pad.

[0018] Step S5: Calculate the thickness of the annular base based on the cross-sectional area and length of the annular base, and set the diameter and thickness of the bottom spring and top spring according to the size of the battery cell terminal and the current value.

[0019] Step S6: Determine the required information acquisition channels for the signal acquisition board based on the number of battery cells, and then determine the width of the acquisition board based on the required footprint of one information acquisition channel;

[0020] Step S7: Determine the bottom support plate and upper pressure plate of the pool cover plate based on the dimensions of the quick-connect electrical connection assembly and the acquisition board, the snap-fit ​​limiting structure, the adhesive sealing connection area, and the manufacturing tolerances of the parts.

[0021] According to another aspect of the present invention, a battery module is provided, comprising: the battery module includes a power battery assembly, the power battery assembly being the power battery assembly described in the above embodiment.

[0022] By applying the technical solution of this invention, the quick-connect electrical connection component and the signal acquisition board are snapped into the base plate, and the upper pressure plate is bonded to the base plate to form an integral structure. After multiple battery cells are snapped into the quick-connect connection component, electrical connection and signal acquisition channels can be quickly formed, which reduces the assembly difficulty of the battery information acquisition component, improves production efficiency and product reliability, and saves production and manufacturing costs. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A schematic diagram of the power battery assembly according to the present invention is shown;

[0025] Figure 2 An exploded view of the power battery assembly according to the present invention is shown;

[0026] Figure 3 A schematic diagram of the structure of a battery cell in a power battery assembly according to the present invention is shown;

[0027] Figure 4 An exploded view of the quick-connect assembly of the power battery pack according to the present invention is shown;

[0028] Figure 5 A schematic diagram of the structure of the upper pressure plate of the power battery assembly according to the present invention is shown;

[0029] Figure 6 A schematic diagram of the structure of the upper pressure plate of the power battery assembly according to the present invention is shown;

[0030] Figure 7 A schematic diagram of the structure of the base plate of the power battery assembly according to the present invention is shown;

[0031] Figure 8 A schematic diagram of a design method for a power battery assembly according to the present invention is shown.

[0032] The above figures include the following reference numerals:

[0033] 100. Upper pressure plate; 111. Clearance passage; 121. Main electrode output opening; 131. Main signal output interface; 141. Protrusion; 151. Horizontal and vertical reinforcing ribs; 161. Second flange section;

[0034] 200. Base plate; 211. First flange; 221. Limiting protrusion; 241. First limiting space; 231. Second limiting space;

[0035] 300. Quick-connect electrical assembly; 310. Annular base; 311. Base plate; 320. Bottom spring; 321. Limiting hole; 330. Top spring; 340. Inner pressure sleeve;

[0036] 400. Signal acquisition board;

[0037] 600, battery cell; 610, positive terminal; 611, insert; 620, negative terminal. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] It should be noted that the terms "first," "second," etc., 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 terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, 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.

[0041] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0042] Combination Figures 1 to 8 As shown, according to a specific embodiment of the present invention, a power battery assembly is provided.

[0043] Specifically, such as Figure 1 , Figure 2 , Figure 3 As shown, the power battery assembly includes: an upper pressure plate 100; a bottom support plate 200 located below the upper pressure plate 100 and connected to the upper pressure plate 100; a signal acquisition board 400 located between the upper pressure plate 100 and the bottom support plate 200; and multiple quick-connect electrical connection assemblies 300 located between the upper pressure plate 100 and the bottom support plate 200, connected to the signal acquisition board 400. Each quick-connect electrical connection assembly 300 has an electrical insertion channel, a locked state for inserting a battery cell 600 into the electrical insertion channel, and an unlocked state for unlocking the battery cell 600 from the electrical insertion channel.

[0044] In this embodiment, the quick-connect electrical connection component 300 and the signal acquisition board 400 are snapped into the base plate 200. After the upper pressure plate 100 is bonded to the base plate 200, an integral structure is formed. After multiple battery cells 600 are snapped into the quick-connect electrical connection component 300, electrical connection and signal acquisition channels can be quickly formed. This reduces the assembly difficulty of the battery information acquisition component, improves production efficiency and product reliability, and saves production and manufacturing costs.

[0045] like Figure 4 As shown, at least one quick-connect electrical connection assembly 300 includes: two annular bases 310, each annular base 310 having a receiving space, an inner pressure sleeve 340 being provided in the receiving space, a limiting ring being provided at the top of the inner pressure sleeve 340, the inner circle of the limiting ring forming a channel for the insertion of the power supply core 600, an installation space being formed between the limiting ring and the bottom of the receiving space, an elastic clamping assembly being provided in the installation space, the elastic clamping assembly having a locked state and an unlocked state, this arrangement makes it easy for the power supply core 600 to be inserted into the quick-connect electrical connection assembly 300.

[0046] Furthermore, the elastic clamping assembly includes: a bottom spring 320, which is located within the mounting space and abuts against the annular base 310, the bottom spring 320 including a plurality of first springs arranged circumferentially along the receiving space; and a top spring 330, which is located within the mounting space and includes a plurality of second springs arranged circumferentially along the receiving space, the first springs and second springs being alternately interlocked, the middle portions of the first springs and second springs being bent toward one side of the geometric central axis of the annular base 310, when the elastic clamping assembly is in the locked state, the first springs and second springs are in the initial position, and when the elastic clamping assembly is in the unlocked state, the first springs and second springs deform a preset distance toward the outer side of the annular base 310. The first leaf of the bottom spring 320 and the second leaf of the top spring 330 are interlocked and then inserted into the inner pressure sleeve 340. The top of the inner pressure sleeve 340 has a limit ring to prevent the bottom spring 320 and the top spring 330 from sliding upwards. Then, the inner pressure sleeve 340 is press-fitted into the cylinder of the annular base 310. The annular base 310, the bottom spring 320, the top spring 330, and the inner pressure sleeve 340 are all made of conductive materials.

[0047] like Figure 3 As shown, the battery cell 600 includes a positive terminal 610 and a negative terminal 620. Each of the positive terminal 610 and the negative terminal 620 is provided with an insert 611. A first spring or a second spring is provided through a limiting hole 321. When the quick-connect electrical connection assembly 300 is in the locked position, the insert 611 can be inserted into the limiting hole 321.

[0048] Specifically, the power battery assembly is equipped with multiple quick-connect electrical connection components 300. After the positive terminals 610 and negative terminals 620 of multiple battery cells 600 are inserted into the quick-connect electrical connection components 300, the quick-connect electrical connection components 300 automatically clamp and lock, achieving the function of quick electrical connection without welding. The power battery assembly has a total electrode output and a total signal output. The positive terminals 610 and negative terminals 620 of the battery cells 600 have chamfered tops and beveled bodies, which serve as quick-connect guides for fast and accurate electrical connection. After multiple battery cell terminals are inserted into the quick-connect electrical connection components 300, an electrical connection and signal acquisition channel can be quickly formed, reducing the assembly difficulty of the battery information acquisition components, improving production efficiency and product reliability, and saving manufacturing costs.

[0049] The bottom spring 320 and top spring 330 have curved spring plates, which can deform and maintain a certain clamping force after the battery cell 600 is quickly inserted. The first or second spring plate has a limiting hole 321, which cooperates with the insert 611 on the positive terminal 610 or negative terminal 620 of the battery cell 600 to lock it in place. After the battery cell 600 is quickly inserted, it can quickly and effectively establish and lock the electrical connection between multiple battery cells, preventing the battery cells from shifting and the electrical connection from failing after severe vibration.

[0050] like Figure 7 As shown, the base plate 200 includes multiple limiting protrusions 221, which form a first limiting space 241 and a second limiting space 231 on the base plate 200. The first limiting space 241 and the second limiting space 231 are connected. The signal acquisition board 400 is located within the first limiting space 241, and the quick-connect electrical connection assembly 300 is located within the second limiting space 231. The multiple limiting protrusions 221 can restrict the arrangement position of the signal acquisition board 400, the second limiting space 231 limits the quick-connect electrical connection assembly 300, and the first limiting space 241 limits the signal acquisition board 400. The first limiting space 241 extends along the length direction of the base plate 200.

[0051] Furthermore, the base plate 200 also includes a first flange portion 211, which is disposed on both sides of the base plate 200 along its length, and the upper surface of the first flange portion 211 is flush with the limiting protrusion 221. The upper pressure plate 100 includes a second flange portion 161, which is disposed on both sides of the upper pressure plate 100 along its length and is connected to the first flange portion 211. After the base plate 200 is arranged with multiple quick-connect electrical connection assemblies 300 and signal acquisition board 400, it is then glued together with the first flange portion 211 of the base plate 200 and the second flange portion 161 of the upper pressure plate 100.

[0052] like Figure 5 , Figure 6As shown, the quick-connect electrical connection assembly 300 also includes a base plate 311, which is connected to an annular base 310. A connection area is provided between the two annular bases 310 on the base plate 311. The upper pressure plate 100 has multiple clearance channels 111 for the annular bases 310 to pass through. A protrusion 141 is provided between two adjacent clearance channels 111. The protrusion 141 protrudes from the bottom surface of the upper pressure plate 100, and a limiting arc surface is provided on the side of the protrusion 141 facing the axis of the clearance channel 111. The protrusion 141 of the upper pressure plate 100 presses against the base plate 311 of the quick-connect electrical connection assembly 300, thereby restricting the Z-axis movement of the quick-connect electrical connection assembly 300. In this embodiment, the protrusion 141 is arc-shaped to mate with the outer peripheral surface of the annular base 310.

[0053] The upper pressure plate 100 is provided with multiple horizontal and vertical reinforcing ribs 151. These ribs 151 are arranged around the annular channel, serving to strengthen the structure, provide electrical isolation, and limit movement in the Z direction. Both the upper pressure plate 100 and the bottom support plate 200 are made of non-conductive materials. The bottom support plate 200 and the upper pressure plate 100 cooperate structurally to effectively support and limit the internal quick-connect electrical assembly 300, while also providing effective physical isolation to avoid the risk of creepage and short circuits between electrical components.

[0054] Furthermore, the upper pressure plate 100 also includes a total electrode output opening 121 and a total signal output interface 131. The total electrode output opening 121 is located at one end of the upper pressure plate 100, and the total signal output interface 131 is located at the other end of the upper pressure plate 100.

[0055] According to another aspect of the present invention, a design method for a power battery assembly is provided, comprising:

[0056] Step S1: Design the module topology based on the layout of electrical components within the battery pack: Based on the layout of electrical components within the battery pack (including modules, battery management system, power distribution management system, etc.), such as... Figure 8 As shown, the module topology is designed, with quick-plug electrical connections between multiple modules, low-voltage signal connections, electrical connections between terminal modules and the power distribution management system, and low-voltage signal connections between modules and the battery management system.

[0057] Step S2: Based on the module topology, battery pack voltage and power requirements, and high-voltage and low-voltage principles, determine the required voltage and power values ​​for a single module; based on the overall pack topology, overall pack voltage and power requirements, and high-voltage and low-voltage principles, determine the reasonable placement of the high-voltage quick-connect and low-voltage signal connectors for a single module, and confirm the required voltage and power values ​​for a single module.

[0058] Step S3: Based on the voltage and power required by a single module, determine the number of battery cells required in series and parallel, the conduction current value of the quick-connect electrical components, and the number of quick-connect electrical components required for the module: Based on the module voltage and power values, determine the number of battery cells required in series and parallel, further determine the conduction current value of the quick-connect electrical components, and the number of quick-connect electrical components required, which is the number of battery cells + 1;

[0059] Step S4: Set the cross-sectional area of ​​the annular base according to the conduction current value of the quick-connect electrical connection assembly, and confirm the distance between the battery cells and the length of the annular base according to the requirements of the battery cell expansion gap and the thickness of the battery cell spacer heat pad.

[0060] Step S5: Calculate the thickness of the annular base based on the cross-sectional area and length of the annular base, and set the diameter and thickness of the bottom spring and top spring according to the size of the battery cell terminal and the current value.

[0061] Step S6: Determine the required information acquisition channels for the signal acquisition board based on the number of battery cells, and then determine the width of the acquisition board based on the required footprint of one information acquisition channel;

[0062] Step S7: Determine the bottom support plate and upper pressure plate in the pool cover plate according to the dimensions of the quick-connect electrical connection components and acquisition board, the snap-fit ​​limiting structure, the adhesive sealing connection area, and the manufacturing tolerances of the parts. Make structural reservations according to the arrangement positions of the high-voltage quick-connect and low-voltage signal connectors output by the module in S1.

[0063] According to another aspect of the present invention, a battery module is provided, comprising: the battery module includes a power battery assembly, the power battery assembly being the power battery assembly described in the above embodiment.

[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0065] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power battery assembly, characterized in that, include: Upper pressure plate (100); A bottom support plate (200) is located below the upper pressure plate (100) and is connected to the upper pressure plate (100); A signal acquisition board (400) is located between the upper pressure plate (100) and the bottom support plate (200); Multiple quick-connect electrical connection assemblies (300) are located between the upper pressure plate (100) and the bottom support plate (200). The multiple quick-connect electrical connection assemblies (300) are connected to the signal acquisition board (400). Each quick-connect electrical connection assembly (300) has an electrical connection channel. Each quick-connect electrical connection assembly (300) has a locked state in which a power supply core (600) is inserted into the electrical connection channel, and an unlocked state in which the power supply core (600) is unlocked from the electrical connection channel. At least one of the quick-connect electrical connection assemblies (300) includes: two annular bases (310), each of the two annular bases (310) having a receiving space, an inner pressure sleeve (340) being provided in the receiving space, a limiting ring being provided at the top of the inner pressure sleeve (340), the inner circle of the limiting ring forming a channel for inserting the battery cell (600), an installation space being formed between the limiting ring and the bottom of the receiving space, an elastic clamping assembly being provided in the installation space, the elastic clamping assembly having a locked state and an unlocked state; The elastic clamping assembly includes: A bottom spring (320) is located within the mounting space and abuts against the annular base (310). The bottom spring (320) includes a plurality of first spring leaves arranged circumferentially along the receiving space. A top spring (330) is located within the mounting space. The top spring (330) includes a plurality of second springs arranged circumferentially along the receiving space. The first spring and the second springs are interleaved and interlocked. The middle portions of the first spring and the second spring are bent toward one side of the geometric center axis of the annular base (310). When the elastic clamping assembly is in the locked state, the first spring and the second spring are in the initial position. When the elastic clamping assembly is in the unlocked state, the first spring and the second spring deform a preset distance toward the outside of the annular base (310). The battery cell (600) includes a positive terminal (610) and a negative terminal (620). Each of the positive terminal (610) and the negative terminal (620) is provided with an insert (611). The first spring or the second spring is provided with a limiting hole (321). When the quick-connect electrical connection assembly (300) is in the locked position, the insert (611) can be inserted into the limiting hole (321).

2. The power battery assembly according to claim 1, characterized in that, The base plate (200) includes: Multiple limiting protrusions (221) form a first limiting space (241) and a second limiting space (231) on the base plate (200). The first limiting space (241) and the second limiting space (231) are connected. The signal acquisition board (400) is located in the first limiting space (241), and the quick-connect electrical connection assembly (300) is located in the second limiting space (231).

3. The power battery assembly according to claim 2, characterized in that, The base plate (200) also includes a first flange (211), which is disposed on both sides of the base plate (200) along the length direction, and the upper surface of the first flange (211) is flush with the limiting protrusion (221).

4. The power battery assembly according to claim 3, characterized in that, The upper pressure plate (100) includes: The second flange (161) is disposed on both sides of the upper pressure plate (100) along the length direction, and the second flange (161) is connected to the first flange (211).

5. The power battery assembly according to claim 1, characterized in that, The quick-connect electrical connection assembly (300) also includes a base plate (311), which is connected to the annular base (310). A connection area is provided between the two annular bases (310) on the base plate (311). The upper pressure plate (100) has multiple clearance channels (111) for the annular bases (310) to pass through. A protrusion (141) is provided between two adjacent clearance channels (111). The protrusion (141) is provided on the bottom surface of the upper pressure plate (100). Each protrusion (141) has a limiting arc surface on the side facing the axis of the clearance channel (111).

6. The power battery assembly according to claim 1, characterized in that, The upper pressure plate (100) also includes a total electrode output opening (121) and a total signal output interface (131). The total electrode output opening (121) is located at one end of the upper pressure plate (100), and the total signal output interface (131) is located at the other end of the upper pressure plate (100).

7. A design method for a power battery assembly, characterized in that, include: Step S1: Design the module topology based on the layout of electrical components within the battery pack; Step S2: Based on the module topology, battery pack voltage and power requirements, and high-voltage and low-voltage principles, determine the required voltage and power values ​​for a single module; Step S3: Based on the voltage and power requirements of a single module, determine the number of cells to be connected in series and in parallel, the conduction current value of the quick-connect components, and the number of quick-connect components required for the module. Step S4: Set the cross-sectional area of ​​the annular base according to the conduction current value of the quick-connect electrical connection assembly, and confirm the distance between the battery cells and the length of the annular base according to the requirements of the battery cell expansion gap and the thickness of the battery cell spacer heat pad; Step S5: Calculate the thickness of the annular base based on the cross-sectional area and length of the annular base, and set the diameter and thickness of the bottom spring and top spring according to the cell electrode size and current value; Step S6: Determine the required information acquisition channels for the signal acquisition board based on the number of battery cells, and then determine the width of the acquisition board based on the required footprint of one of the information acquisition channels; Step S7: Determine the bottom support plate and upper pressure plate of the pool cover plate according to the dimensions of the quick-connect electrical connection assembly and the acquisition plate, the snap-fit ​​limiting structure, the adhesive sealing connection area, and the manufacturing tolerances of the components.

8. A battery module, characterized in that, include: The battery module includes a power battery assembly, which is the power battery assembly according to any one of claims 1 to 6.

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