WO2024066815A1 - Module support and power battery module - Google Patents

Abstract

Disclosed are a module support and a power battery module. The module support comprises a support body (1), and also comprises a collection wire harness mounting structure. The collection wire harness mounting structure comprises side collection wire harness fixing structures (16); the side collection wire harness fixing structures (16) are arranged on side edges of the support body (1); and the side collection wire harness fixing structures (16) are provided with collection wire harness fixing surfaces (162).

Description

Module bracket and power battery module

This application claims the priority of the Chinese patent application filed with the China Patent Office on September 30, 2022, with application number 202222649843.7, the entire contents of which are incorporated by reference into this application.

Technical Field

The present application relates to the field of battery technology, for example, to a module bracket and a power battery module.

Background technique

The power battery module is a component unit of the battery pack. In the power battery module, multiple cells are arranged and packaged in an orderly manner to form a power battery module. In order to fix the relative positions of multiple cells in the power battery module, the power battery module also includes a module bracket. In order to ensure the safety of the cells on the module bracket, it is necessary to collect temperature and voltage of the cells through the collection harness.

In the related art, the collection harness is generally laid on the upper surface of the module bracket, and there is no fixed structure to fix the collection harness. This causes the collection harness to shift when the power battery module is assembled, resulting in failure in collecting relevant parameters of some battery cells, affecting the safety performance of the power battery module.

SUMMARY OF THE INVENTION

The present application provides a module bracket and a power battery module to solve the technical problem of unstable installation of a collection harness in a power battery module existing in the related art.

In a first aspect, an embodiment of the present application provides a module bracket, comprising a bracket body, the module bracket also comprising a collection harness installation structure, the collection harness installation structure comprising a side collection harness fixing structure, the side of the bracket body is provided with the side collection harness fixing structure, and a collection harness fixing surface is provided on the side collection harness fixing structure.

In a second aspect, an embodiment of the present application provides a power battery module, comprising the above-mentioned module bracket.

Beneficial Effects

The module bracket provided in the present application uses bonding or riveting to fix the collection harness to the side collection harness fixing structure when installing the collection harness, thereby achieving a stable position of the collection harness relative to the module bracket and the battery cell, avoiding displacement of the collection harness due to lack of a fixing structure when assembling the power battery module, and ensuring the effectiveness of the collection harness in collecting relevant parameters of the battery cell, thereby ensuring the safety performance of the power battery module.

The power battery module provided in the present application includes the above-mentioned module bracket, which can ensure the stable installation of the collection harness, thereby ensuring the effectiveness of the collection of relevant parameters of the battery cell and the safety performance of the power battery module.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of a battery cell provided in Example 1 of the present application.

FIG2 is a schematic diagram of a module bracket provided in Example 1 of the present application from one viewing angle;

Fig. 3 is an enlarged view of point A in Fig. 2;

FIG4 is a schematic structural diagram of a guide member provided in Example 1 of the present application;

Fig. 5 is an enlarged view of point B in Fig. 2;

FIG6 is an enlarged view of point C in FIG2;

FIG7 is an enlarged view of point D in FIG2;

FIG8 is a schematic diagram of a connector fixing structure provided in Embodiment 1 of the present application from one viewing angle;

FIG9 is a schematic diagram of a connector fixing structure provided in Embodiment 1 of the present application from another viewing angle;

FIG10 is a schematic diagram of the module bracket provided in Embodiment 1 of the present application from another viewing angle;

FIG11 is an enlarged view of point E in FIG10 ;

FIG12 is an enlarged view of point F in FIG10 ;

FIG13 is a schematic diagram of a module bracket provided in Embodiment 1 of the present application from another viewing angle;

FIG14 is an enlarged view of point G in FIG13;

FIG. 15 is a schematic diagram of a module bracket provided in Embodiment 2 of the present application from one viewing angle.

In the figure:

10. Battery cell; 101. Battery cell body; 102. Positive pole; 20. Output busbar installation position; 30. Series busbar installation position; 40. Output component;

1. bracket body; 11. first side surface; 12. second side surface; 111. first side plate; 121. second side plate; 1001. first battery cell installation area; 1002. second battery cell installation area; 1003. third battery cell installation area;

11. Battery cell installation structure; 111. Voltage sampling point fixing structure; 1111. Voltage sampling point fixing groove; 1112. Voltage sampling point fixing protrusion; 112. Battery cell positioning hole; 113. Avoidance hole;

12. guide member; 121. arc surface; 122. center weight-reducing hole;

13. Clamp assembly; 131. Clamp;

14. Temperature sampling identification point; 15. Voltage sampling identification point; 16. Side collection harness fixing structure; 161. Harness guide groove; 162. Collection harness fixing surface;

171. Busbar monomer negative electrode connection hole; 172. Glue injection hole; 173. Hot riveting column;

18. Connector mounting structure; 181. First slide rail; 182. First buckle; 183. Second slide rail; 184. Second buckle;

19. Support leg.

Embodiments of the present invention

Embodiment 1

1 and 2 , this embodiment provides a module bracket, which is used as an upper module bracket of a power battery module in the embodiment of the present application. Before assembling the module bracket, the battery cell 10 is pre-installed on the lower module bracket.

In the embodiment of the present application, referring to FIG1 , the battery cell 10 includes a battery cell body 101 and a positive electrode column 102 disposed at one end of the battery cell body 101. The end of the battery cell body 101 not provided with the positive electrode column 102 is mounted on the lower module support. The battery cell body 101 is the negative terminal of the battery cell 10.

2 to 4 , in this embodiment, the module support includes a support body 1, and a battery cell mounting structure 11 is disposed on the support body 1. In one embodiment, the battery cell mounting structure 11 is disposed in a one-to-one correspondence with the battery cells 10.

In order to enable the positive electrode column 102 of the battery cell 10 to be quickly installed on the battery cell installation structure 11 when the support body 1 of the module support is assembled to the battery cell 10 pre-installed on the lower module support, in this embodiment, the module support also includes an assembly guide structure.

Referring to Figures 3 and 4, the assembly guide structure is arranged on the first surface of the bracket body 1, and the assembly guide structure includes a plurality of guide members 12 arranged at circumferential intervals along the battery cell mounting structure 11, and the guide members 12 are provided with an arc surface 121 adapted to the side shape of the battery cell body 101, and the center line of the arc surface 121 coincides with the center line of the battery cell mounting structure 11.

In one embodiment, the arc surface 121 is configured to be able to contact with the side surface of the battery cell body 101 to limit the position of the battery cell body 101 .

In one embodiment, the first surface is the surface of the module support facing the battery cell 10 when the battery module is assembled.

When the module bracket provided in this embodiment is assembled to the power battery mode, the first surface of the module bracket is directed toward the battery cell 10 that has been pre-installed on the lower module bracket, and the assembly guide structure cooperates with the battery cell body 101 of the battery cell 10, so that the side surface of the battery cell body 101 abuts against the arc surface 121 of the guide member 12, and the battery cell 10 is limited by the arc surface 121; the center line of the arc surface 121 coincides with the center line of the battery cell mounting structure 11, and the multiple guide members 12 of the assembly guide structure jointly limit the position of the battery cell body 101 relative to the bracket body 1, so that the axis of the battery cell body 101 that deviates from the ideal installation position can be fine-tuned to ensure that the actual installation position of the battery cell body 101 coincides with the ideal installation position, thereby ensuring that the positive electrode column 102 provided at one end of the battery cell body 101 is smoothly installed in the battery cell mounting structure 11, thereby ensuring installation efficiency.

Even if there is a deviation between the actual position of the axis of the positive electrode column of some battery cells 10 pre-installed on the lower module bracket and the ideal position of the positive electrode column 102 installed in the battery cell mounting structure 11, the assembly guide structure cooperates with the battery cell body 101 of the battery cell 10, so that the battery cell body 101 is located in the ideal installation position, thereby correcting the axis of the battery cell body 101, that is, realizing the correction of the axis position of the positive electrode column 102, ensuring that the positive electrode column 102 can be quickly and smoothly installed in the battery cell mounting structure 11.

In one embodiment, a guide avoidance slope (not shown) is provided at one end of the arc surface 121 facing the cell body 101. Under the guidance of the guide avoidance slope, the cell body 101 can quickly enter the guide limit surface formed by the assembly guide structure. In one embodiment, multiple arc surfaces 121 on the periphery of each cell mounting structure 11 jointly limit the same cell body 101, and these arc surfaces 121 jointly form a guide limit surface.

In this embodiment, the support body 1 is provided with multiple rows of battery cell installation structure groups arranged along the first direction, and each battery cell installation structure group includes multiple battery cell installation structures 11 arranged at equal intervals along the second direction. Each battery cell installation structure 11 is provided with an assembly guide structure on its circumference.

In one embodiment, at least one guide member 12 is provided on the peripheral side of the battery cell mounting structure 11 disposed near the edge of the bracket body 1, and an arc-shaped surface adapted to the side shape of the battery cell body 101 is provided on the edge of the bracket body 1. Six guide members 12 are provided on the peripheral side of the battery cell mounting structure 11 disposed at the edge not near the bracket body 1.

In this embodiment, along the circumference of the guide member 12, the outer side surface of the guide member 12 is provided with three arcuate surfaces 121, and the three arcuate surfaces 121 of one guide member 12 can simultaneously abut against the battery cells 10 corresponding to the three battery cell mounting structures 11. That is, one guide member 12 can be shared by three battery cells 10, thereby reducing the number of guide members 12 and saving costs.

2 and 10 , in order to realize that one guide member 12 can be shared by three battery cells 10 , the battery cell mounting structures 11 of two adjacent rows of battery cell mounting structure groups along the first direction are staggered.

Referring to FIG. 4 , in order to save material cost and reduce product weight, in this embodiment, a central weight-reducing hole 122 is provided on the guide member 12 .

Referring to FIG. 2 , in order to achieve stable installation of the collection harness, in this embodiment, the module bracket further includes a collection harness installation structure, which includes a side collection harness fixing structure 16, and the side of the bracket body 1 is provided with the side collection harness fixing structure 16, and the side collection harness fixing structure 16 is provided with a collection harness fixing surface 162. In one embodiment, the collection harness fixing surface 162 is the surface of the side collection harness fixing structure 16 that is away from the battery cell 10 on the bracket body 1.

When installing the collection harness, the collection harness can be fixed to the side collection harness fixing structure 16 by bonding or riveting to avoid displacement of the collection harness due to lack of a fixing structure when assembling the power battery module, thereby ensuring the effectiveness of collecting relevant parameters of the battery cell 10 and thus ensuring the safety performance of the power battery module.

In one embodiment, the data collection harness is used to collect the voltage and temperature of the battery cell 10 .

In this embodiment, a side collection harness fixing structure 16 is integrally formed on the side of the bracket body 1 along the second direction, that is, the long side, and multiple side collection harness fixing structures 16 are arranged at intervals on each long side to ensure the stability of the collection harness fixing.

6 , in order to improve the structural strength of the side collection harness fixing structure 16, in this embodiment, a reinforcing rib 161 is provided on the surface of the side collection harness fixing structure 16 away from the collection harness fixing surface 162. In one embodiment, three reinforcing ribs 161 are provided on each side collection harness fixing structure 16.

Referring to Figures 2 and 10, in this embodiment, in order to quickly realize the series and parallel connection of multiple battery cells 10, a first battery cell installation area 1001 and a second battery cell installation area 1002 are sequentially arranged on the bracket body 1 along the first direction, and a plurality of side collection harness fixing structures 16 are arranged at intervals on a first side edge 11 extending along the second direction near the first battery cell installation area 1001, and a plurality of side collection harness fixing structures 16 are arranged at intervals on a second side edge 12 extending along the second direction near the second battery cell installation area 1002, and the first direction is perpendicular to the second direction.

In this embodiment, the first direction is the short side direction of the bracket body 1 , and the second direction is the long side direction of the bracket body 1 .

The side collection harness fixing structure 16 on the first side 11 facilitates fixing the collection harness of the first battery cell installation area 1001 ; the side collection harness fixing structure 16 on the second side 12 facilitates fixing the collection harness of the second battery cell installation area 1002 .

Of course, in other embodiments, see FIG. 15 , the side collection harness fixing structure 16 can be the entire side structure perpendicular to the bracket body 1, that is: along the first direction, the bracket body 1 is sequentially provided with a first battery cell installation area 1001 and a second battery cell installation area 1002, a first side plate 111 perpendicular to the bracket body 1 is provided on the first side edge 11 extending along the second direction near the first battery cell installation area 1001, and a second side plate 121 perpendicular to the bracket body 1 is provided on the second side edge 12 extending along the second direction near the second battery cell installation area 1002, and the first side plate 111 and the second side plate 121 are both the side collection harness fixing structure 16, and a fixing groove 1621 is provided on the collection harness fixing surface 162. That is, the surface of the first side plate 111 away from the second side plate 121 is the collection harness fixing surface 162, and the surface of the second side plate 121 away from the first side plate 111 is the collection harness fixing surface 162. The fixing groove 1621 is set to fix the FFC or FPC.

13 and 14 , the first battery cell installation area 1001 and the second battery cell installation area 1002 both include a plurality of battery cell installation structures 11 arranged in an array.

In the first battery cell installation area 1001 , a row of battery cell installation structures 11 closest to the first side edge 11 are all provided with a voltage sampling point fixing structure 111 ; and/or

In the second battery cell installation area 1002 , a row of battery cell installation structures 11 closest to the second side edge 12 are all provided with voltage sampling point fixing structures 111 .

In one embodiment, referring to FIG. 10 and FIG. 13, in this embodiment, four columns of battery cell mounting structures 11 are arranged in the first battery cell installation area 1001, and each column of battery cell mounting structures 11 is arranged along the second direction; four columns of battery cell mounting structures 11 are arranged in the second battery cell installation area 1002, and each column of battery cell mounting structures 11 is arranged along the second direction. In the first battery cell installation area 1001, the column of battery cell mounting structures 11 closest to the first side 11, that is, the leftmost column of battery cell mounting structures 11 in the orientation shown in FIG. 10, are all provided with voltage sampling point fixing structures 111; in the second battery cell installation area 1002, the column of battery cell mounting structures 11 closest to the second side 12, that is, the rightmost column of battery cell mounting structures 11 in the orientation shown in FIG. 10, are all provided with voltage sampling point fixing structures 111.

The support body 1 is also provided with a third battery cell installation area 1003 to increase the number of battery cells 10 that can be installed in the support body 1 .

The third battery cell installation area 1003 is located between the first battery cell installation area 1001 and the second battery cell installation area 1002. The collection harness installation structure further includes an intermediate collection harness fixing structure, which is arranged in the third battery cell installation area 1003. The intermediate collection harness fixing structure is arranged to fix and install the collection harness of the third battery cell installation area 1003.

Referring to Fig. 2 and Fig. 5, in this embodiment, the intermediate collection harness fixing structure includes a plurality of clamping plate assemblies 13 arranged according to a preset path, the clamping plate assembly 13 includes two clamping plates 131 arranged opposite to each other, and the two clamping plates 131 of the clamping plate assembly 13 can clamp the collection harness. Such an arrangement ensures that the collection harness is stably installed on the bracket body 1 along the preset path.

In this embodiment, the preset paths are arranged substantially along the second direction. In one embodiment, in this embodiment, a plurality of clamping plate assemblies 13 are arranged one by one on the guide member 12 on the preset path. The clamping plate assemblies 13 are arranged on the guide member 12 to avoid the clamping plate assemblies 13 from occupying additional positions on the first surface of the bracket body 1, thereby avoiding interference between the clamping plate assemblies 13 and the battery cells 10 when assembling the module bracket, thereby affecting the normal assembly of the module bracket.

In this embodiment, the clamping plate 131 is arc-shaped.

Since the preset paths are arranged roughly along the second direction, and the guide members 12 arranged along the second direction are not strictly arranged in a straight line, the arrangement of the clamping plate assembly 13 is actually arranged as a curved line extending along the second direction, so the collection harness is installed on the bracket body 1 in a curved shape. The clamping plate 131 is set to an arc shape, which can adapt to the bending and flexible deformation of the collection harness to better protect the collection harness. At the same time, the clamping plate 131 is set to an arc shape, which can also adapt to the side wall of the battery body 101 to avoid interfering with the installation of the battery 10.

In one embodiment, referring to FIG. 10 and FIG. 12 , the third battery cell installation area 1003 includes a plurality of battery cell installation structures 11 arranged in an array, and a voltage sampling point fixing structure 111 is provided on a row of battery cell installation structures 11 closest to the clamping plate assembly 13 in the third battery cell installation area 1003 .

The provision of the voltage sampling point fixing structure 111 can ensure the stable installation of the voltage sampling point.

Referring to Figures 10 to 14, in this embodiment, the voltage sampling point fixing structure 111 includes a voltage sampling point fixing groove 1111 and two voltage sampling point fixing protrusions 1112. The two voltage sampling point fixing protrusions 1112 are arranged at intervals along the second direction; a voltage sampling point fixing groove 1111 is formed between the two voltage sampling point fixing protrusions 1112. Specifically, a nickel sheet serving as a voltage collection point is installed in the voltage sampling point fixing groove 1111, and when the collection harness is installed, the nickel sheet is electrically connected to the collection harness.

In one embodiment, the voltage sampling point fixing structure 111 is disposed on the second surface of the bracket body 1. The second surface is a surface facing opposite to the first surface.

Referring to FIG. 12 , the voltage sampling point fixing structure 111 of the third battery cell installation area 1003 is arranged corresponding to the intermediate collection harness fixing structure. In order to enable the voltage collection point thereto be electrically connected to the collection harness at the intermediate collection harness fixing structure, an avoidance hole 113 communicating with the voltage sampling point fixing groove 1111 is provided on the bracket body 1 in the third battery cell installation area 1003 .

13 and 14, the voltage sampling point fixing structure 111 at the first battery cell installation area 1001 and the second battery cell installation area 1002 is set against the side of the bracket body 1. Taking the first battery cell installation area 1001 as an example, the voltage sampling point fixing groove 1111 of the first battery cell installation area 1001 is set against the side of the bracket body 1. After the nickel sheet is fixed to the voltage sampling point fixing groove 1111 there, the side collection harness corresponding to the first battery cell installation area 1001 is set against the side collection harness fixing structure 16 of the first battery cell installation area 1001, and the nickel sheet can be directly connected to the side collection harness.

10 and 11 , in this embodiment, a temperature sampling identification point 14 and/or a voltage sampling identification point 15 are provided on the bracket body 1 .

In one embodiment, in this embodiment, the second surface of the bracket body 1 is provided with a temperature sampling identification point 14 and/or a voltage sampling identification point 15 .

In one embodiment, the second surface is the surface of the bracket body 1 facing away from the battery cell 10 in the power battery module.

In this embodiment, the second surface of the bracket body 1 is provided with a temperature sampling identification point 14 and a voltage sampling identification point 15. In this way, the voltage acquisition component and the temperature acquisition component of the power battery module can be integrated into the bracket body 1. Setting a temperature point identification at the temperature sampling identification point 14 and a voltage point identification at the voltage sampling identification point 15 can intuitively and quickly identify the information of each collection point, and at the same time can improve the efficiency of troubleshooting the power battery module.

2 and 7 to 9 , in order to realize the installation of the connector on the bracket body 1 , in this embodiment, a connector installation structure 18 is further provided on the bracket body 1 .

Referring to FIG8 and FIG9, in this embodiment, the connector mounting structure 18 is provided with a first slide rail 181 and a first buckle 182. The first slide rail 181 can be slidably connected with the first slide groove on the connector, and the first buckle 182 can be snapped onto the connector. The first slide rail 181 is adapted to the slide groove on the connector, and the first buckle 182 can be snapped onto the connector, so that the connector can be quickly and stably installed on the connector mounting structure 18.

The connector mounting structure 18 is also provided with a second slide rail 183 and a second buckle 184, the bracket body 1 is provided with a second slide groove that slidably cooperates with the second slide rail 183, and the bracket body 1 is provided with a second buckle groove that cooperates with the second buckle 184. In this way, the connector mounting structure 18 is quickly installed on the bracket body 1.

11 , in this embodiment, the cell installation structure 11 includes a cell positioning hole 112 and a busbar cell negative electrode connection hole 171 . The busbar cell negative electrode connection hole 171 is disposed on the side of the cell positioning hole 112 .

In this embodiment, the cell positioning hole 112 is configured to position the positive pole 102 of the cell 10. The diameter of each cell positioning hole 112 is the same. After the power battery module is assembled, the second surface of the bracket body 1 is in direct contact with the liquid cooling plate of the battery pack, and the diameter of each cell mounting structure 11 is the same, thereby ensuring that the contact area between each cell 10 and the liquid cooling plate is the same, that is, the heat conduction area of all cells 10 is equal, ensuring the cooling consistency and uniformity of all cells 10.

The battery cells 10 are connected by a bus. The bus includes a plurality of bus cells, and the plurality of bus cells are connected by a substrate. Each bus cell includes a positive electrode connection portion and a negative electrode connection portion that are connected to each other, that is, each bus cell can connect two battery cells 10 in series. In one embodiment, the positive electrode connection portion of the bus cell is connected to the positive electrode column 101 of the battery cell 10, and the negative electrode connection portion of the bus cell is connected to the negative electrode of the battery cell 10, that is, connected to the battery cell body 101.

There is a plastic structure at the bottom of the bus to isolate the bus from the negative pole of the battery cell.

In order to realize the installation of the busbar, in this embodiment, a busbar monomer negative electrode connection hole 171 is provided on the bracket body 1, and the negative electrode connection part of the busbar monomer is placed in the busbar monomer negative electrode connection hole 171, so as to be connected to the negative electrode of the battery cell 10. In one embodiment, a busbar monomer negative electrode connection hole 171 is provided on the side of each battery cell mounting structure 11.

In one embodiment, in the actual assembly process, the series-parallel busbars, the series busbars and the output pole busbars are installed in corresponding positions. The installation of the series-parallel busbars, the series busbars and the output pole busbars is a related technology well known to those skilled in the art and will not be described in detail here.

In this embodiment, an output busbar installation position 20 , a series busbar installation position 30 and a series-parallel busbar installation position are provided on the second surface of the bracket body 1 , so as to facilitate quick installation of the busbar.

In order to quickly disperse the heat of the battery cell 10, the battery cell mounting structure 11 further includes a glue injection hole 172, which is arranged on the side of the battery cell positioning hole 112. The glue injection hole 172 is filled with thermal conductive glue, which enables heat transfer between the battery cell 10 and the liquid cooling plate, quickly disperses the heat of the battery cell 10, and prevents the battery cell 10 from thermal runaway.

The glue injection hole 172 , the battery cell positioning hole 112 and the busbar single negative electrode connection hole 171 are all formed by opening holes.

The physical structure of each battery cell mounting structure 11 is also provided with a heat rivet column 173 matching the bus bar. The heat rivet column 173 can realize the positioning and fixation of the bus bar, thereby ensuring the relative position of the battery cell 10 and the bus bar.

The physical structure of each battery cell mounting structure 11 can separate the positive electrode column 102 from the battery cell body 101 of the same battery cell 10, thereby separating the positive electrode column 102 from the negative electrode column of the same battery cell 10, preventing the series-parallel busbars from being directly overlapped and causing a short circuit.

An output member 40 is embedded at the output pole position of the bracket body 1. In one embodiment, the output member 40 is an output nut, and the output member 40 can realize the connection between adjacent power battery modules, ensuring that the connection between the power battery modules is reliable, efficient and convenient.

Support feet 19 are provided at the four corners of the bracket body 1. In one embodiment, the support feet 19 are provided on the first surface, and the size of the support feet 19 is larger than the size of the collection harness installation structure along the direction perpendicular to the bracket body 1. When assembling various components onto the bracket body 1, the support feet 19 support the bracket body 1, which facilitates the assembly of various components and prevents the assembled components, such as the collection harness, from being crushed.

In this embodiment, the bracket body 1 is made of plastic.

In this embodiment, before assembly, components such as the busbar, the collection harness, and the connector are integrated into the bracket body 1 to achieve a high degree of product integration.

Embodiment 2

This embodiment provides a power battery module, which includes the module bracket in the first embodiment.

Claims (18)

1. A module bracket comprises a bracket body (1), and also comprises a collection harness installation structure, the collection harness installation structure comprising a side collection harness fixing structure (16), the side collection harness fixing structure (16) is arranged on the side of the bracket body (1), and a collection harness fixing surface (162) is arranged on the side collection harness fixing structure (16).
2. The module bracket according to claim 1, wherein a reinforcing rib (161) is provided on a surface of the side collection harness fixing structure (16) facing away from the collection harness fixing surface (162).
3. The module bracket according to claim 1, wherein, along the first direction, a first battery cell installation area (1001) and a second battery cell installation area (1002) are sequentially arranged on the bracket body (1), a plurality of the side edge collection harness fixing structures (16) are arranged at intervals on a first side edge (11) extending along the second direction close to the first battery cell installation area (1001), and a plurality of the side edge collection harness fixing structures (16) are arranged at intervals on a second side edge (12) extending along the second direction close to the second battery cell installation area (1002), and the first direction is perpendicular to the second direction.
4. The module bracket according to claim 1, wherein, along the first direction, a first battery cell installation area (1001) and a second battery cell installation area (1002) are sequentially arranged on the bracket body (1), a first side plate 111 perpendicular to the bracket body (1) is arranged on a first side edge (11) extending along the second direction close to the first battery cell installation area (1001), and a second side plate 121 perpendicular to the bracket body (1) is arranged on a second side edge (12) extending along the second direction close to the second battery cell installation area (1002), the first side plate 111 and the second side plate 121 are both the side collection harness fixing structure (16), a fixing groove 1621 is arranged on the collection harness fixing surface (162), and the first direction is perpendicular to the second direction.
5. The module bracket according to claim 3 or 4, wherein the first battery cell installation area (1001) and the second battery cell installation area (1002) both comprise a plurality of battery cell installation structures (11) arranged in an array;

   In the first battery cell installation area (1001), a row of the battery cell installation structures (11) closest to the first side edge (11) are all provided with a voltage sampling point fixing structure (111); and/or

   In the second battery cell installation area (1002), a row of the battery cell installation structures (11) closest to the second side edge (12) are all provided with the voltage sampling point fixing structure (111).
6. The module bracket according to claim 5, wherein a third battery cell installation area (1003) is further provided on the bracket body (1), the third battery cell installation area (1003) is located between the first battery cell installation area (1001) and the second battery cell installation area (1002), and the collection harness installation structure further comprises an intermediate collection harness fixing structure, and the intermediate collection harness fixing structure is arranged in the third battery cell installation area (1003).
7. The module bracket according to claim 6, wherein the intermediate collection harness fixing structure comprises a plurality of clamping plate assemblies (13) arranged according to a preset path, the clamping plate assembly (13) comprises two clamping plates (131) arranged opposite to each other, and the two clamping plates (131) of the clamping plate assembly (13) are capable of clamping the collection harness.
8. The module bracket according to claim 7, wherein the clamping plate (131) is arc-shaped.
9. The module bracket according to claim 7, wherein the third battery cell installation area (1003) comprises a plurality of battery cell installation structures (11) arranged in an array, and the voltage sampling point fixing structure (111) is provided on a row of the battery cell installation structures (11) closest to the clamping plate assembly (13) in the third battery cell installation area (1003).
10. The module bracket according to claim 9, wherein the voltage sampling point fixing structure (111) comprises:

    Two voltage sampling point fixing protrusions (1112) are arranged at intervals along the second direction; and

    A voltage sampling point fixing groove (1111) is formed between the two voltage sampling point fixing protrusions (1112).
11. The module bracket according to claim 10, wherein, in the third battery cell installation area (1003), a avoidance hole (113) communicating with the voltage sampling point fixing groove (1111) is provided on the bracket body (1).
12. The module bracket according to any one of claims 1 to 4, wherein the second surface of the bracket body (1) is provided with a temperature sampling identification point (14) and/or a voltage sampling identification point (15).
13. The module bracket according to any one of claims 1 to 4, wherein a connector mounting structure (18) is provided on the bracket body (1).
14. The module bracket according to claim 13, wherein the connector mounting structure (18) is provided with a first slide rail (181) and a first buckle (182), the first slide rail (181) can be slidably connected to the first slide groove on the connector, and the first buckle (182) can be snapped onto the connector.
15. The module bracket according to claim 13, wherein the connector mounting structure (18) is provided with a second slide rail (183) and a second buckle (184), the bracket body (1) is provided with a second slide groove slidably matched with the second slide rail (183), and the bracket body (1) is provided with a second buckle groove matched with the second buckle (184).
16. The module bracket according to any one of claims 1 to 4, wherein a cell mounting structure (11) is provided on the bracket body (1), and the cell mounting structure (11) comprises:

    Battery cell positioning hole (112); and

    The busbar monomer negative electrode connection hole (171) is arranged on the side of the battery cell positioning hole (112).
17. The module bracket according to any one of claims 1 to 4, characterized in that an output component (40) is provided on the bracket body (1).
18. A power battery module, comprising the module bracket according to any one of claims 1 to 17.