Module end plate and battery module

Abstract

The utility model provides a module end plate and a battery module, the module end plate comprises an end plate body and a limiting strip, and the middle part of the end plate body is provided with a hoisting hole; a first limiting hole is formed in the upper part of the end plate body, and a second limiting hole is formed in the lower part of the end plate body; the top surface of the end plate body is provided with a lightening hole penetrating to the bottom surface; avoiding grooves distributed in the vertical direction are formed in the side wall of the end plate body; the two limiting strips distributed in the vertical direction are arranged on the left side and the right side of the end plate body correspondingly. The hoisting hole is located between the two limiting strips; a first fixing area for containing an upper steel belt is formed between the first limiting hole and the top of the limiting strip, and a second fixing area for containing a lower steel belt is formed between the second limiting hole and the bottom of the limiting strip. The utility model has the technical effects that the design is reasonable, the assembly efficiency of the battery module is obviously improved, and the product productivity is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery modules, and in particular relates to a module end plate and a battery module. Background Art

[0002] The battery module is mainly composed of multiple battery cells connected in series / parallel. Multiple battery modules constitute a battery system. After the battery system is fully charged, it can provide power to the outside world stably and continuously. Module end plates are provided at the ends of the battery modules. The module end plates are used to support and fix the battery modules and protect the battery cells in case of collision.

[0003] The existing module end plate structure design is unreasonable, which is not conducive to improving the battery module assembly efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art and provide a new technical solution for a module end plate and a battery module.

[0005] According to a first aspect of the present application, a module end plate is provided, which is applied to a battery module, comprising:

[0006] The end plate body is provided with a lifting hole in the middle of the end plate body; the upper part of the end plate body is provided with a first limiting hole, and the lower part of the end plate body is provided with a second limiting hole; the top surface of the end plate body is provided with a weight reduction hole penetrating to the bottom surface; the side wall of the end plate body is provided with avoidance grooves distributed in the vertical direction;

[0007] Limiting bars, two of which are distributed in the vertical direction and are respectively arranged on the left and right sides of the end plate body; the hoisting hole is located between the two limiting bars;

[0008] A first fixing area for accommodating an upper steel belt is formed between the first limiting hole and the top of the limiting strip, and a second fixing area for accommodating a lower steel belt is formed between the second limiting hole and the bottom of the limiting strip.

[0009] Optionally, a fixing hole is provided on the top surface of the end plate body, and the end plate body is fixedly connected to the box body of the battery module through the fixing hole.

[0010] Optionally, the fixing hole is an oblong hole.

[0011] Optionally, the module end plate further includes a plastic rivet, and the first limiting hole and the second limiting hole are both provided with the plastic rivet, and the plastic rivet is used to limit the upper steel belt or the lower steel belt.

[0012] Optionally, a third limiting hole is provided on the upper portion of the end plate body, and the third limiting hole is used to limit the plastic terminal of the battery module.

[0013] Optionally, the center of the first limiting hole and the center of the third limiting hole are located on the same horizontal line.

[0014] According to a second aspect of the present application, a battery module is provided, characterized in that it includes the module end plate as described in the first aspect, and further includes:

[0015] A battery cell assembly, wherein a plurality of battery cells are stacked together to form the battery cell assembly; the two module end plates are respectively located on both sides of the battery cell assembly;

[0016] An upper steel belt and a lower steel belt, wherein the module end plate and the battery cell assembly are sleeved with the upper steel belt and the lower steel belt in a ring shape, and the upper steel belt and the lower steel belt are arranged in parallel to fix the module unit and the battery cell assembly together;

[0017] A plastic terminal is fixed to the module end plate and is electrically connected to the battery core assembly.

[0018] Optionally, a copper threaded column is provided on the top of the plastic terminal, and the copper threaded column is welded to the aluminum-palladium sheet of the battery cell assembly.

[0019] Optionally, first slots are respectively provided on both sides of the bottom of the plastic terminal, and limiting ribs corresponding to the first slots are provided on the top of the module end plate; the first slots are connected to the limiting ribs;

[0020] The front side of the plastic terminal is provided with a latch tongue, and the inner side of the module end plate is provided with a latch hole;

[0021] When the first clamping slot is clamped to the limiting rib, the clamping tongue is clamped to the clamping hole.

[0022] Optionally, second card slots are respectively provided on both sides of the bottom of the plastic terminal;

[0023] The two second card slots are located between the two first card slots, and the latch is located between the two second card slots;

[0024] An adjustment plate is formed between the first card slot and the second card slot;

[0025] When the first clamping slot is clamped to the limiting rib, the limiting rib presses the adjusting plate to move it toward the side of the clamping tongue.

[0026] A technical effect of this application is:

[0027] In the embodiment of the present application, the structural design of the module end plate is reasonable. Through the cooperation of the first limiting hole, the second limiting hole, and the limiting strip, the upper steel belt and the lower steel belt can be quickly and accurately mounted on the module end plate, thereby significantly improving the assembly efficiency of the battery module and thereby improving product production capacity.

[0028] In addition, the lifting holes help to realize the lifting and transportation of the battery module; at the same time, the avoidance grooves provided on the side walls of the end plate body can effectively avoid interference between the bonding layer of the upper steel belt or the lower steel belt and the end plate body, which helps to smoothly put the upper steel belt and the lower steel belt on the module end plate, and then helps to quickly and firmly fix the end plate and the battery cell assembly together. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of a module end plate according to an embodiment of the utility model;

[0030] Figure 2 This is a schematic structural diagram of a plastic terminal according to an embodiment of the utility model;

[0031] Figure 3 This is a schematic diagram of the connection between the plastic terminal and the module end plate according to one embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram of an exploded structure of a battery module according to an embodiment of the utility model;

[0033] Figure 5 The figure is a schematic diagram of the overall structure of a battery module according to an embodiment of the present utility model.

[0034] In the figure: 100, end plate body; 200, plastic terminal; 300, battery cell assembly; 301, aluminum-palladium sheet; 400, upper steel belt; 500, lower steel belt; 1, lifting hole; 2, second limiting hole; 3, limiting strip; 4, third limiting hole; 5, fixing hole; 6, avoidance groove; 7, weight reduction hole; 8, first limiting hole; 9, tongue; 10, second slot; 11, first slot; 12, copper threaded column; 13, adjustment plate; 14, hole; 15, limiting rib; 16, plastic rivet; 17, limiting unit. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0036] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0037] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] According to the first aspect of the present application, see Figure 1 , provides a module end plate, applied to a battery module, comprising:

[0041] The end plate body 100 has a hoisting hole 1 in the middle thereof, and the hoisting hole 1 is used to carry and transfer the battery module; the upper portion of the end plate body 100 has a first limiting hole 8, and the lower portion of the end plate body 100 has a second limiting hole 2; the top surface of the end plate body 100 has a weight-reducing hole 7 extending through the bottom surface, and the weight-reducing hole 7 can reduce the weight of the module end plate when the structural strength is met, thereby saving costs; the side wall of the end plate body 100 has avoidance grooves 6 distributed in the vertical direction;

[0042] Limiting bars 3, two limiting bars 3 distributed in the vertical direction are respectively arranged on the left and right sides of the end plate body 100; the hoisting hole 1 is located between the two limiting bars 3;

[0043] A first fixing area for accommodating the upper steel belt 400 is formed between the first limiting hole 8 and the top of the limiting strip 3, and a second fixing area for accommodating the lower steel belt 500 is formed between the second limiting hole 2 and the bottom of the limiting strip 3. The first fixing area and the second fixing area help to quickly put the upper steel belt 400 and the lower steel belt 500 on the end plate body 100, and when the pre-tightening force of the tooling is removed, the original pre-tightening force can be maintained by the upper steel belt 400 and the lower steel belt 500.

[0044] In the embodiment of the present application, the structural design of the module end plate is reasonable. Through the cooperation of the first limiting hole 8, the second limiting hole 2, and the limiting strip 3, the upper steel belt 400 and the lower steel belt 500 can be quickly and accurately mounted on the module end plate, thereby significantly improving the assembly efficiency of the battery module and thereby improving product production capacity.

[0045] In addition, the lifting hole 1 helps to realize the lifting and transportation of the battery module; at the same time, the avoidance groove 6 set on the side wall of the end plate body 100 can effectively avoid the interference between the bonding layer of the upper steel belt 400 or the lower steel belt 500 and the end plate body 100, which helps to smoothly put the upper steel belt 400 and the lower steel belt 500 on the module end plate, and then helps to quickly and firmly fix the module end plate and the battery cell assembly 300 together.

[0046] For example, the overall structure of the end plate body 100 is an extruded aluminum profile, which is then formed by mechanical processing of small parts, and the manufacturing process is relatively simple.

[0047] Optionally, a fixing hole 5 is provided on the top surface of the end plate body 100, and the end plate body 100 is fixedly connected to the box body of the battery module through the fixing hole 5. This helps to quickly assemble the module end plate and the box body, thereby improving assembly efficiency.

[0048] Optionally, the fixing hole 5 is an oblong hole, which is used to adjust the length tolerance of the battery module to ensure the assembly effect.

[0049] Optionally, the module end plate further includes a plastic rivet 16 , and the first limiting hole 8 and the second limiting hole 2 are both provided with the plastic rivet 16 , and the plastic rivet 16 is used to limit the upper steel belt 400 or the lower steel belt 500 .

[0050] In the above embodiment, after the battery cell assemblies 300 are stacked, tooling is used to extrude the module end plates on both sides of the battery cell assemblies 300 so that the pre-tightening force of the battery module reaches 300 kg, and then the upper steel belt 400 and the lower steel belt 500 are installed. Finally, plastic rivets 16 are respectively installed in the first limiting hole 8 and the second limiting hole 2 of the module end plate to prevent the upper steel belt 400 and the lower steel belt 500 from moving up and down and falling off, thereby better ensuring the stability of the battery module.

[0051] Optionally, a third limiting hole 4 is provided on the upper portion of the end plate body 100, and the third limiting hole 4 is used to limit the plastic terminal 200 of the battery module. This helps to quickly fix the plastic terminal 200 and the end plate body 100 together, thereby improving assembly efficiency.

[0052] Optionally, the center of the first limiting hole 8 and the center of the third limiting hole 4 are located on the same horizontal line. This helps to improve the processing efficiency of the module end plate and also helps to quickly limit the positions of various components during the assembly process.

[0053] According to the second aspect of this application, see Figures 4 to 5 , provides a battery module, characterized in that it includes the module end plate as described in the first aspect, and further includes:

[0054] A battery cell assembly 300, wherein a plurality of battery cells are stacked together to form the battery cell assembly 300; the two module end plates are respectively located on both sides of the battery cell assembly 300;

[0055] An upper steel belt 400 and a lower steel belt 500, wherein the module end plate and the battery cell assembly 300 are sleeved with the upper steel belt 400 and the lower steel belt 500 in a ring shape, and the upper steel belt 400 and the lower steel belt 500 are arranged in parallel to fix the module unit and the battery cell assembly 300 together;

[0056] The plastic terminal 200 is fixed to the module end plate and electrically connected to the battery cell assembly 300 .

[0057] In the above embodiment, the structural design of the battery module is reasonable, which significantly improves the assembly efficiency of the battery module, thereby increasing the product production capacity. The hoisting hole 1 is helpful to realize the hoisting and transportation of the battery module.

[0058] Optionally, a copper threaded column 12 is provided on the top of the plastic terminal 200, and the copper threaded column 12 is welded to the aluminum-palladium sheet 301 of the battery cell assembly 300. This helps to firmly connect the battery cell assembly 300 and the plastic terminal 200 together.

[0059] Alternatively, see Figure 2 and Figure 3 The bottom sides of the plastic terminal 200 are respectively provided with first card slots 11, and the top of the module end plate is provided with limiting ribs 15 corresponding to the first card slots 11; the first card slots 11 are connected to the limiting ribs 15, so that the plastic terminal is plugged into the module end plate;

[0060] The front side of the plastic terminal 200 is provided with a latch tongue 9, and the inner side of the module end plate is provided with a latch hole 14;

[0061] When the first slot 11 is engaged with the limiting rib 15, the locking tongue 9 is engaged with the locking hole 14, wherein the first slot 11 and the limiting rib 15 are interference fit. The first slot 11 is used to limit the horizontal movement of the plastic terminal 200 relative to the end plate body 100, and the locking tongue 9 is used to limit the vertical movement of the plastic terminal 200 relative to the end plate body 100.

[0062] In a specific embodiment, a cavity structure is formed between two limiting ribs 15, a clamping hole 14 is provided on one side of the cavity structure, and a limiting unit 17 protruding from the surface of the cavity structure is provided on the other side. When the plastic terminal 200 moves to a preset position of the end plate body 100 along the vertical direction, the clamping tongue 9 is clamped in the clamping hole 14, and the limiting unit 17 clamps the plastic terminal 200. The movement of the plastic terminal 200 relative to the end plate body 100 is limited by the cooperation of the limiting unit 17 and the clamping hole 14, which is simple and reliable.

[0063] Optionally, the bottom two sides of the plastic terminal 200 are respectively provided with second card slots 10;

[0064] The two second card slots 10 are located between the two first card slots 11, and the latch tongue 9 is located between the two second card slots 10;

[0065] An adjustment plate 13 is formed between the first card slot 11 and the second card slot 10;

[0066] When the first locking groove 11 is locked to the limiting rib 15 , the limiting rib 15 presses the adjusting plate 13 to move it toward the locking tongue 9 .

[0067] In the above embodiment, when the first slot 11 and the limiting rib 15 are interference fit, the adjustment plates 13 on both sides of the plastic terminal 200 are squeezed, which effectively prevents the lower part of the plastic terminal 200 from being deformed or broken due to squeezing, thereby better protecting the plastic terminal 200.

[0068] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A module end plate, applied to a battery module, characterized in that: include: The end plate body is provided with a lifting hole in the middle of the end plate body; the upper part of the end plate body is provided with a first limiting hole, and the lower part of the end plate body is provided with a second limiting hole; the top surface of the end plate body is provided with a weight reduction hole penetrating to the bottom surface; the side wall of the end plate body is provided with avoidance grooves distributed in the vertical direction; Limiting bars, two of which are distributed in the vertical direction and are respectively arranged on the left and right sides of the end plate body; the hoisting hole is located between the two limiting bars; A first fixing area for accommodating an upper steel belt is formed between the first limiting hole and the top of the limiting strip, and a second fixing area for accommodating a lower steel belt is formed between the second limiting hole and the bottom of the limiting strip.

2. The module end plate according to claim 1, characterized in that: A fixing hole is arranged on the top surface of the end plate body, and the end plate body is fixedly connected to the box body of the battery module through the fixing hole.

3. The module end plate according to claim 2, characterized in that: The fixing hole is an oblong hole.

4. The module end plate according to claim 1, characterized in that: It also includes a plastic rivet, which is installed in both the first limiting hole and the second limiting hole, and is used to limit the upper steel belt or the lower steel belt.

5. The module end plate according to claim 1, characterized in that: A third limiting hole is provided on the upper portion of the end plate body, and the third limiting hole is used to limit the plastic terminal of the battery module.

6. The module end plate according to claim 5, characterized in that: The center of the first limiting hole and the center of the third limiting hole are located on the same horizontal line.

7. A battery module, characterized in that: The module end plate according to any one of claims 1 to 6 further comprises: A battery cell assembly, wherein a plurality of battery cells are stacked together to form the battery cell assembly; the two module end plates are respectively located on both sides of the battery cell assembly; An upper steel belt and a lower steel belt, wherein the module end plate and the battery cell assembly are sleeved with the upper steel belt and the lower steel belt in a ring shape, and the upper steel belt and the lower steel belt are arranged in parallel to fix the module unit and the battery cell assembly together; A plastic terminal is fixed to the module end plate and is electrically connected to the battery core assembly.

8. The battery module according to claim 7, characterized in that: A copper threaded column is arranged on the top of the plastic terminal, and the copper threaded column is welded to the aluminum-palladium sheet of the battery core assembly.

9. The battery module according to claim 8, characterized in that: First slots are respectively provided on both sides of the bottom of the plastic terminal, and limiting ribs corresponding to the first slots are provided on the top of the module end plate; the first slots are connected to the limiting ribs; The front side of the plastic terminal is provided with a latch tongue, and the inner side of the module end plate is provided with a latch hole; When the first clamping slot is clamped to the limiting rib, the clamping tongue is clamped to the clamping hole.

10. The battery module according to claim 9, characterized in that: Second card slots are respectively arranged on both sides of the bottom of the plastic terminal; The two second card slots are located between the two first card slots, and the latch is located between the two second card slots; An adjustment plate is formed between the first card slot and the second card slot; When the first clamping slot is clamped to the limiting rib, the limiting rib presses the adjusting plate to move it toward the side of the clamping tongue.

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