A module end plate and a battery module

Abstract

The application relates to the battery assembly technical field and discloses a module end plate and a battery module. The battery end plate is used for fixing battery units, the module end plate comprises a plate body with a first surface and a second surface arranged along the thickness direction; a positioning part arranged on the first surface of the plate body and used for fixing battery slave units of the battery module; and a binding part, the binding part is arranged in at least two groups along the height direction of the plate body, each group of the binding part comprises two or more than two binding parts. Through the above mode, the binding part can be directly arranged at the edges on both sides of the plate body, and the bottom of the binding part is provided with a binding curved surface, so that the structure of the plate body can be simplified, the processing difficulty and the manufacturing cost of the plate body are reduced, the edges of the plate body can be prevented from being damaged due to stress extrusion of the binding belt during the fixing of the battery units, the binding belt can be prevented from being damaged due to the pressing of the edges of the plate body, and the binding state of the battery module is more reliable.

Description

Technical Field

[0001] This application relates to the field of battery assembly technology, specifically to a module end plate and a battery module. Background Technology

[0002] In power battery modules, end plates are required for assembly. However, existing end plates have problems such as complex structure, high processing difficulty, expensive molds, many parts splicing, heavy weight, and high cost. On the other hand, when using end plates with simplified structures to assemble battery modules, there are problems such as unsatisfactory binding effect between the end plate and the battery cell, and easy loosening of the internal structure of the battery module. Utility Model Content

[0003] This application provides a module end plate and a battery assembly, which not only simplifies the structure of the plate and reduces the processing difficulty and manufacturing cost of the plate, but also prevents the edges of the plate from being damaged by the stress of the binding strap when fixing the battery unit. At the same time, it can also reduce the damage of the binding strap to the edges of the plate, making the binding state of the battery module more reliable and avoiding the situation of loose binding of the battery module.

[0004] This application provides a module end plate for fixing battery cells, the module end plate comprising:

[0005] The plate has a first surface and a second surface disposed along the thickness direction;

[0006] A positioning part is disposed on the first surface of the plate and is used to fix the battery slave control unit of the battery module.

[0007] The binding part is provided in at least two groups along the height direction of the plate body. Each group of binding parts includes two or more binding parts. Each binding part belonging to the same group is symmetrically arranged on both sides of the first surface of the plate body in the width direction. The bottom of the binding part is provided with a binding curved surface.

[0008] In one embodiment of this application, the plate further includes an installation channel and a hoisting part. The installation channel is provided through the plate along its height direction. There are at least two installation channels and at least two hoisting parts. Each hoisting part is connected to one of the installation channels.

[0009] In one embodiment of this application, the mounting channel is disposed adjacent to both sides of the plate along the width direction.

[0010] In one embodiment of this application, the plate body is provided with a plurality of cavities along the height direction, and a first connecting portion is provided on the opposite sidewall of some of the cavities.

[0011] Accordingly, this application also provides a battery module, including the module end plate as described in the above embodiments, the battery module further including:

[0012] A plurality of battery cells are located between the plates of the two module end plates, and the battery cells include a plurality of battery cells connected in sequence.

[0013] The restraint straps include at least two, each of which is connected to a set of restraint portions on the two plates to secure the battery unit between the plates.

[0014] In one embodiment of this application, the battery module further includes a connection component for electrically connecting the battery cell and adjacent battery cells in series, the connection component comprising:

[0015] A plurality of conductive sheets, some of which are used to connect the positive and negative terminals of adjacent battery cells, some of which are used to connect the positive and negative terminals of adjacent battery units, and some of which are used to connect the positive and negative terminals of the assembled battery module to external electrical equipment respectively.

[0016] A support base is located on top of the battery cell and is used to mount the conductive sheet.

[0017] In one embodiment of this application, both the support base and the plates at both ends of the battery module are provided with fixing components, the fixing components including:

[0018] A connector, wherein the bottom of the connector has a connector portion that is inserted into the cavity, and the connector portion is provided with a second connecting portion, the second connecting portion being in a concave-convex connection with the first connecting portion;

[0019] A press-fit component, one end of which is connected to the plug-in component and the other end of which is connected to the support base.

[0020] In one embodiment of this application, the battery module further includes a battery slave control component, the battery slave control component comprising:

[0021] The battery slave control unit is located on the board at one end of the battery module and is used to monitor the operating parameters of the individual battery cells.

[0022] A connecting lead extends along the length of the support base, and lead branches are provided between the connecting lead and the conductive sheet. One end of the connecting lead is provided with a connector for electrical connection with the battery slave control unit.

[0023] In one embodiment of this application, the battery slave control assembly further includes a protective housing, the protective housing comprising:

[0024] A first housing is located on the first surface of the plate, and the first housing is connected to the plate through the positioning part;

[0025] A second housing is connected to the first housing, and the first and second housings form a space to accommodate the battery slave unit.

[0026] In one embodiment of this application, a plurality of battery cells are located between the second surfaces of two plates, and an insulating element is provided between the second surface of the plates and the battery cells; and / or,

[0027] An insulating component is provided between adjacent battery cells, and an insulating component is provided between the insulating component and the battery cells on both sides.

[0028] The beneficial effects of this application are:

[0029] By directly setting the binding part on the edges of both sides of the plate, and setting the bottom of the binding part as a binding curved surface, not only can the structure of the plate be simplified, the processing difficulty and manufacturing cost of the plate be reduced, but also the plate edges can be prevented from being damaged by the stress of the binding strap when fixing the battery unit. At the same time, the binding strap can also be reduced from being damaged by the edge of the plate, making the binding state of the battery module more reliable and avoiding the situation of loose binding of the battery module. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of the module endplate of this application from one perspective;

[0032] Figure 2 yes Figure 1 A structural schematic diagram of the module end plate from another perspective;

[0033] Figure 3 This is a schematic diagram of the structure of an embodiment of the battery module of this application;

[0034] Figure 4 yes Figure 3 An exploded view of the battery module shown.

[0035] Figure 5 yes Figure 3 A schematic diagram of the exploded structure of the battery module from another perspective;

[0036] Figure 6yes Figure 3 Schematic diagram of the structure at point A in the diagram;

[0037] Figure 7 yes Figure 3 An exploded view of the battery module shown, including the plate, support base, conductive sheet, connecting leads, and crimping components.

[0038] Figure 8 yes Figure 3 Schematic diagram of the structure at point B in the diagram;

[0039] Figure 9 yes Figure 3 The diagram shows an exploded view of the battery module, including the plate, the first housing, the battery slave control unit, and the second housing.

[0040] Explanation of reference numerals in the attached figures:

[0041] 10. Plate; 101. First surface; 102. Second surface; 11. Positioning part; 12. Binding part; 121. Binding curved surface; 13. Mounting channel; 14. Lifting part; 15. Cavity; 151. First connecting part; 1511. Cutting hole; 20. Battery unit; 201. Battery cell; 30. Binding strap; 40. Conductive sheet; 50. Support base; 60. Connector; 601. Connector; 6 011, Second connecting part; 602, Assembly screw hole; 70, Press-fit part; 701, Through hole; 80, Battery slave control unit; 81, Connecting lead; 811, Lead branch; 812, Connector; 82, First housing; 821, Fixing ear; 822, Slot; 823, Threaded seat; 83, Second housing; 831, Insert plate; 84, Pad; 90, Insulator; 100, Isolator; 110, Base pad. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.

[0043] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] Please refer to Figures 1 to 3 This application provides a module end plate for fixing a battery unit 20. The module end plate includes a plate body 10, a positioning part 11, and a binding part 12.

[0045] Specifically, the plate 10 has a first surface 101 and a second surface 102 disposed along the thickness direction Y; the first surface 101 and the second surface 102 define the thickness of the plate 10; the plate 10 can be a die-cast part, and the die-cast part material can be an aluminum profile; when the battery unit 20 is fixed, the second surface 102 of the plate 10 is disposed opposite to the battery unit 20.

[0046] A positioning part 11 is disposed on the first surface 101 of the plate 10 for fixing the battery slave control unit 80 of the battery module. The positioning part 11 has a threaded hole extending from the first surface 101 to the second surface 102 along the thickness direction Y of the plate 10, allowing the battery slave control unit 80 to be fixed to the plate 10 by bolts. The battery slave control unit 80 is a component of the battery management system, responsible for collecting information such as voltage and temperature of individual cells, calculating and analyzing battery state of charge and health status, enabling active balancing of individual cells, and further uploading abnormal information of individual cells to the battery cluster management unit via CAN communication. The battery cluster management unit is an intermediate level in the battery management system, responsible for managing and controlling a battery cluster composed of multiple battery modules. The main functions of the battery cluster management unit include data acquisition, advanced control, fault diagnosis, and communication.

[0047] At least two sets of binding portions 12 are provided along the height direction Z of the plate 10. Each set of binding portions 12 includes two or more binding portions 12. The binding portions 12 belonging to the same set are symmetrically arranged on both sides of the first surface 101 of the plate 10 in the width direction X. A binding curved surface 121 is provided at the bottom of the binding portion 12. The binding portion 12 can be a groove-shaped structure. During the battery module assembly process, the binding strap 30 can cooperate with the binding portion 12. The side wall of the groove-shaped binding portion 12 can limit the binding strap 30 and prevent the binding strap 30 from detaching from the binding portion 12. The binding curved surface 121 can be the bottom wall of the groove-shaped binding portion 12. Specifically, the binding curved surface 121 can be an arc-shaped surface.

[0048] By directly setting the binding part 12 on the edges of both sides of the plate 10, and setting the bottom of the binding part 12 as a binding curved surface 121, the structure of the plate 10 can be simplified, the processing difficulty and manufacturing cost of the plate 10 can be reduced, and the edges of the plate 10 can be prevented from being damaged by the stress of the binding strap 30 when fixing the battery unit 20. At the same time, the damage of the binding strap 30 to the edges of the plate 10 can be reduced, making the binding state of the battery module more reliable and avoiding the situation of loose binding of the battery module.

[0049] In one embodiment, please refer to Figure 1 and Figure 2 The plate body 10 also includes an installation channel 13 and a lifting part 14. The installation channel 13 is arranged through the plate body 10 along the height direction Z. There are at least two installation channels 13 and at least two lifting parts 14. Each lifting part 14 is connected to one installation channel 13. Specifically, the installation channel 13 can be a roughly circular or elliptical hole structure. The installation channel 13 can be fixed with bolts or other fasteners to install the assembled battery module in the battery box, thereby positioning the battery module and preventing it from moving inside the battery box. The lifting part 14 can be a groove structure extending from the first surface 101 to the second surface 102. The groove structure is connected to the installation channel 13. When the battery module assembled by the plate body 10 is put into the battery box, the lifting hook of the lifting equipment can be placed into the lifting part 14 and the installation channel 13, thereby lifting and moving the battery module into the battery box. Subsequently, the battery module can be positioned in the battery box by inserting bolts or other fasteners into the installation channel 13, thus preventing the battery module from moving inside the battery box. Therefore, by setting the installation channel 13 and the hoisting part 14 to be in a connected state, when the battery module assembled by the plate 10 is hoisted, the installation channel 13 can be used as part of the hoisting part 14, so that the end of the hoisting hook can be inserted into the installation channel 13. There is no need to separately process a bent space on the plate 10 to match the end of the hoisting hook, thereby simplifying the processing steps of the plate 10 and reducing the processing difficulty of the plate 10.

[0050] It should be noted that the lifting parts 14 are preferably symmetrically arranged in the width direction X of the plate 10, and the lifting parts 14 are located on both sides of the first surface 101 along the width direction X as much as possible, so that when the battery module is lifted, a large distance can be maintained between the corresponding lifting hooks on both sides, and the lifting process of the battery module is more stable.

[0051] In one embodiment, please refer to Figure 1 and Figure 2The mounting channel 13 is located on both sides of the adjacent plate 10 along the width direction X. Specifically, in practical applications, the mounting channel 13 should be located as close as possible to the two sides of the adjacent width direction X, so that the fixing effect of the plate 10 and the battery unit 20 can be improved by using fasteners such as screws.

[0052] In one embodiment, please continue to refer to Figure 1 and Figure 2 The plate 10 has several cavities 15 along the height direction Z, and some cavities 15 have first connecting portions 151 on their opposite sidewalls. Specifically, the cavities 15 for which the first connecting portions 151 are provided are symmetrically arranged in the width direction X of the plate 10, so that the first connecting portions 151 are also symmetrically arranged on the plate 10. The first connecting portions 151 are cavity wall grooves provided on the two sidewalls of the cavities 15 along the width direction X of the plate 10. In this embodiment, the cavity wall grooves are formed by a cutting process. The cutting equipment cuts from the first surface 101 of the plate 10 along the thickness direction Y to the second surface 102. When cutting to the cavity 15, cavity wall grooves are formed on its two sidewalls. After cutting, cutting holes 1511 are left on the first surface 101. The first connecting portions 151 are formed on the sidewalls of the cavities 15 from the first surface 101 of the plate 10 by a cutting process, which can reduce the processing difficulty of the first connecting portions 151 and reduce production costs.

[0053] Accordingly, please refer to Figures 3 to 5 This application also provides a battery module, including a module end plate as described in the above embodiments, and the battery module further includes a plurality of battery cells 20 and a restraint strap 30.

[0054] Specifically, a number of battery units 20 are located between the plates 10 of the two module end plates. Each battery unit 20 includes a number of battery cells 201 connected in sequence. An insulating isolation frame is provided between adjacent battery cells 201 of each battery unit, which not only insulates adjacent battery units 20 and improves the safety of the battery unit 20, but also helps to dissipate heat from the battery cells 201.

[0055] The binding straps 30 include at least two, each binding strap 30 being connected to a set of binding portions 12 on two plates 10 to secure the battery unit 20 between the plates 10. The binding straps 30 can be steel straps or plastic straps. Steel straps have higher strength than plastic straps, but they are also more rigid. Therefore, when using steel straps to bind the battery module, protective sleeves need to be covered on the steel straps on both sides of the battery unit 20 to prevent the steel straps from damaging the outer casing of the battery unit 201.

[0056] It should be noted that a bottom pad 110 is provided at the bottom of each battery cell in the assembled battery module, which can buffer and protect the bottom of the outer shell of all battery cells 201 in the battery module, thereby enhancing the shock resistance of the battery module.

[0057] By directly setting the binding part 12 on the edges of both sides of the plate 10, and setting the bottom of the binding part 12 as a binding curved surface 121, the plate 10 edges can be prevented from being damaged by the stress compression of the binding strap 30 during battery module assembly. At the same time, the binding strap 30 can be reduced from being damaged by the edges of the plate 10, making the binding state of the battery module more reliable, avoiding the battery module from becoming loose, and extending the service life of the battery module.

[0058] In one embodiment, please Figures 3 to 5 Further reference Figure 6 and Figure 7 The battery module also includes a connection assembly for electrically connecting the battery cell 201 and adjacent battery cells 20 in series. The connection assembly includes a plurality of conductive sheets 40 and a support base 50.

[0059] Specifically, some conductive sheets 40 are used to connect the positive and negative terminals of adjacent battery cells 201, some conductive sheets 40 are used to connect the positive and negative terminals of adjacent battery units 20, and some conductive sheets 40 are used to connect the positive and negative terminals of the assembled battery module to external electrical equipment. In other words, the conductive sheets 40 can be roughly divided into three types: the first type of conductive sheet 40 is used for conduction between individual battery cells 201 within the battery unit 20; the second type of conductive sheet 40 is used for conduction between adjacent battery units 20 within the battery module; and the third type of conductive sheet 40 is used to be placed at the positive and negative terminals of the battery module to facilitate connection with external electrical equipment.

[0060] The support base 50 is located on the top of the battery cell 20. The support base 50 is used to install the conductive sheet 40. The support base 50 covers the top of the battery cells 201 of all battery cells 20 in the battery module. The support base 50 is made of insulating material. The support base 50 can be provided with a slot corresponding to the conductive sheet 40. A post can also be provided in the slot. The post can penetrate the conductive sheet 40 to achieve the positioning of the conductive sheet 40.

[0061] In one embodiment, please Figure 6 and Figure 7 Further reference Figure 8 Both the support base 50 and the plates 10 at both ends of the battery module are provided with fixing components, which include plug-in parts 60 and press-fit parts 70.

[0062] Specifically, the bottom of the connector 60 has a connector 601 that is inserted into the cavity 15. The connector 601 is provided with a second connecting part 6011, which is in a concave-convex connection with the first connecting part 151. The connector 60 can be a U-shaped structure. The cross-section of the connector 601 can be configured to fit the end face of the cavity 15, so that when the connector 601 is inserted into the cavity 15, it can abut against the inner wall of the cavity 15, thus preventing the connector 601 from shaking in the cavity 15. In addition, when the first connecting part 151 is a cavity wall groove, the second connecting part 6011 can be a spring piece provided on the side wall of the connector 601. When the connector 601 is inserted into the cavity 15, the spring piece can cooperate with the wall groove to realize the concave-convex connection between the second connecting part 6011 and the first connecting part 151, thereby fixing the connector 60 to the plate 10.

[0063] One end of the press-fit component 70 is connected to the plug-in component 60, and the other end is connected to the support base 50. The press-fit component 70 is preferably made of insulating material. The press-fit component 70 can be set in a Z-shape. One end of the Z-shaped press-fit component 70 can be provided with a through hole 701. The plug-in component 60 can be adapted to be provided with an assembly screw hole 602, so that one end of the press-fit component 70 can be fixed to the plug-in component 60 by fasteners such as bolts. The other end of the Z-shaped component covers the support base 50. Specifically, the support base 50 can be fixed to all the battery cells 201 of the battery module by the conductive sheet 40 at the end of the support base 50. Thus, the support base 50 is connected to the plate 10, so that the connection between the conductive sheet 40 on the support base 50 and the positive and negative terminals of the battery cells 201 is made conductive.

[0064] In one embodiment, please refer to Figures 3 to 8 The battery module also includes a battery slave control component, which includes a battery slave control unit 80 and a connecting lead 81.

[0065] Specifically, the battery slave control unit 80 is located on the board 10 at one end of the battery module and is used to monitor the operating parameters of the battery cells 201, such as voltage and temperature, and to calculate and analyze information such as the battery's state of charge and health status.

[0066] The connecting lead 81 extends along the length of the support base 50. Lead stubs 811 are provided between the connecting lead 81 and the conductive sheet 40. One end of the connecting lead 81 is provided with a connector 812 for electrical connection with the battery slave control unit 80. In practical applications, the connecting lead 81 can be a flexible circuit board; the lead stubs 811 can be nickel sheets, through which electrical signals from the conductive sheet 40 can be input to the connecting lead 81. Since one end of the connecting lead 81 is provided with a connector 812, the battery slave control unit 80 is adaptively provided with a connector 812 to achieve signal connection between the connecting lead 81 and the battery slave control unit 80, thereby monitoring the operating parameters of each battery cell 201 in the battery module.

[0067] It should be noted that, due to the height difference between the battery slave control unit 80 and the connecting lead 81, after the connector 812 is connected to the connector base of the battery slave control unit 80, the connector 812 will be bent at the top of the board 10. Therefore, in practical applications, a pad 84 needs to be placed between the top of the board 10 and the connector 812 to prevent the connector 812 from being worn by the board 10.

[0068] In one embodiment, please Figures 3 to 7 Further reference Figure 9 The battery control assembly also includes a protective housing, which includes a first housing 82 and a second housing 83.

[0069] Specifically, the first housing 82 is located on the first surface 101 of the plate 10, and the first housing 82 is connected to the plate 10 through the positioning part 11. The first housing 82 may be provided with a plurality of fixing ears 821, which are correspondingly provided with the positioning part 11. When the positioning part 11 is a threaded hole, the fixing ears 821 may be provided with ear holes so that the first housing 82 can be fixed to the first surface 101 of the plate 10 by bolts. The side of the first housing 82 facing away from the plate 10 may be provided with a plurality of threaded seats 823 so that the battery slave control unit 80 can be connected to the first housing 82 by bolts.

[0070] The second housing 83 is connected to the first housing 82, and the first housing 82 and the second housing 83 form a space to accommodate the battery slave unit 80. Insert plates 831 are provided on both sides of the second housing 83, and slots 822 corresponding to the insert plates 831 are provided on both sides of the first housing 82. The insert plates 831 have grooves or protrusions. When the insert plate 831 has a groove, the slot 822 has a corresponding protrusion; when the insert plate 831 has a protrusion, the slot 822 has a corresponding groove. This allows for the connection and fixation between the first housing 82 and the second housing 83, and isolates the battery slave unit from the outside world, protecting the battery slave unit 80 from external damage.

[0071] In one embodiment, please refer to Figures 3 to 5 A number of battery cells 20 are located between the second surfaces 102 of two plates 10. An insulating element 90 is provided between the second surfaces 102 of the plates 10 and the battery cells 20. The insulating element 90 can be a plate-shaped structure made of epoxy resin or foamed silicone material. The surface shape of the insulating element 90 is adapted to the plates 10 and the battery cells 201. Moreover, both sides of the insulating element 90 are provided with an adhesive layer for bonding the plates 10 and the battery cells 201. Thus, insulation between the plates 10 and the battery cells 201 can be achieved.

[0072] Furthermore, an insulating member 100 is provided between adjacent battery cells 20, and an insulating member 90 is provided between the insulating member 100 and the battery cells 20 on both sides. The insulating member 100 can be a plate-shaped die-cast part adapted to the structure of the battery cell 201, and the die-cast part material can also be aluminum profile. The shape of the insulating member 100 is adapted to the shape of the battery cell 201, and the insulating member 90 located between the insulating member 100 and the battery cell 20 can be a plate-shaped structure made of epoxy resin or foamed silicone material. The surface shape of the insulating member 90 is adapted to the insulating member 100 and the battery cell 201, and both sides of the insulating member 90 are provided with an adhesive layer for bonding the insulating member 100 and the battery cell 201. Thus, insulation between the insulating member 100 and the battery cell 201 can be achieved.

[0073] The module end plate and battery module provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A module end plate, characterized in that, For fixing the battery cell (20), the module end plate includes: The plate (10) has a first surface (101) and a second surface (102) disposed along the thickness direction; A positioning part (11) is disposed on the first surface (101) of the plate (10) for fixing the battery slave control unit (80) of the battery module; The binding part (12) is provided in at least two groups along the height direction of the plate (10). Each group of binding parts (12) includes two or more binding parts (12). Each binding part (12) belonging to the same group is symmetrically arranged on both sides of the first surface (101) of the plate (10) in the width direction. The bottom of the binding part (12) is provided with a binding curved surface (121).

2. The module end plate according to claim 1, characterized in that, The plate (10) further includes an installation channel (13) and a hoisting part (14). The installation channel (13) is arranged through the plate (10) along the height direction. There are at least two installation channels (13) and at least two hoisting parts (14). Each hoisting part (14) is connected to one of the installation channels (13).

3. The module end plate according to claim 2, characterized in that, The mounting channel (13) is located on both sides of the plate (10) along the width direction.

4. The module end plate according to claim 1, characterized in that, The plate (10) has a plurality of cavities (15) along the height direction, and a first connecting part (151) is provided on the opposite side wall of some of the cavities (15).

5. A battery module, characterized in that, The battery module includes the module end plate as described in any one of claims 1 to 4, and further includes: A plurality of battery cells (20) are located between the plates (10) of the two module end plates. Each battery cell (20) includes a plurality of battery cells (201) connected in sequence. The restraint straps (30), including at least two, are connected to a set of restraint portions (12) on the two plates (10) respectively, to fix the battery unit (20) between the plates (10).

6. The battery module according to claim 5, characterized in that, The battery module further includes a connection component for electrically connecting the battery cell (201) and adjacent battery cells (20) in series, the connection component including: A plurality of conductive sheets (40), some of which are used to connect the positive and negative terminals of adjacent battery cells (201), some of which are used to connect the positive and negative terminals of adjacent battery cells (20), and some of which are used to connect the positive and negative terminals of the assembled battery module to external electrical equipment respectively. A support base (50) is located on top of the battery cell (20), and the support base (50) is used to mount the conductive sheet (40).

7. The battery module according to claim 6, characterized in that, Both the support base (50) and the plates (10) at both ends of the battery module are provided with fixing components, the fixing components including: The connector (60) has a bottom part (601) that is inserted into the cavity (15). The bottom part (601) is provided with a second connecting part (6011), and the second connecting part (6011) is in a concave-convex connection with the first connecting part (151). A press-fitting component (70) is connected at one end to the plug-in component (60) and at the other end to the support base (50).

8. The battery module according to claim 6, characterized in that, The battery module further includes a battery slave control component, which includes: The battery slave control unit (80) is located on the plate (10) at one end of the battery module and is used to monitor the operating parameters of the battery cell (201). A connecting lead (81) extends along the length of the support base (50). A lead branch (811) is provided between the connecting lead (81) and the conductive sheet (40). One end of the connecting lead (81) is provided with a connector (812) for electrical connection with the battery slave control unit (80).

9. The battery module according to claim 8, characterized in that, The battery slave control assembly further includes a protective housing, the protective housing comprising: A first housing (82) is located on the first surface (101) of the plate (10), and the first housing (82) is connected to the plate (10) through the positioning part (11); The second housing (83) is connected to the first housing (82), and the first housing (82) and the second housing (83) form a space to accommodate the battery slave control unit (80).

10. The battery module according to claim 5, characterized in that, A plurality of the battery cells (20) are located between the second surfaces (102) of the two plates (10), and an insulating element (90) is provided between the second surface (102) of the plates (10) and the battery cells (20); and / or, An isolation member (100) is provided between adjacent battery cells (20), and an insulating member (90) is provided between the isolation member (100) and the battery cells (20) on both sides.

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