Supporting end plate and battery pack

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a supporting end plate and a battery pack, the supporting end plate comprises a middle connecting part, a supporting boss and two module connecting parts, one module connecting part, the middle connecting part and the other module connecting part are sequentially connected in the first direction, and the supporting boss is arranged on the middle connecting part; a cross beam matching groove is defined by the middle connecting part and the two module connecting parts, the supporting boss is fixed to the middle connecting part, the supporting boss and the cross beam matching groove are located on the two opposite sides of the middle connecting part in the second direction respectively, the supporting boss is provided with a supporting end, and the supporting end is connected with the cross beam matching groove. The supporting end is arranged far away from the module connecting part in the second direction, and the first direction is perpendicular to the second direction. The utility model aims to provide the supporting end plate and the battery pack aiming at at least one technical problem related in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a support end plate and a battery pack. Background Art

[0002] At present, the application of power batteries is becoming more and more extensive. The emergence of new energy vehicles has greatly improved the pollution caused to the environment. However, most people still have mileage anxiety about new energy vehicles. Compared with the energy replenishment stations that can be found everywhere for fuel vehicles, electric vehicles have no advantage in power replenishment. However, the internal space of the battery pack is limited. How to use the limited internal space to make the battery last longer becomes particularly important. Changing the existing battery pack with only a single-layer battery module to a double-layer battery module can increase the battery storage capacity and extend the battery pack's battery life. However, in order to support the upper battery module, the corresponding support structure of the lower layer of the battery box needs to be raised as a whole, which increases the material used in the battery box and makes the battery pack heavier. Utility Model Content

[0003] The purpose of the present application is to provide a support end plate and a battery pack in view of at least one technical problem involved in the background technology.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] One aspect of the present application provides a support end plate, including an intermediate connecting part, a support boss and two module connecting parts, wherein one of the module connecting parts, the intermediate connecting part and the other module connecting part are sequentially connected in a first direction, and a cross-beam matching groove is enclosed between the intermediate connecting part and the two module connecting parts, and the support boss is fixed to the intermediate connecting part, and in a second direction, the support boss and the cross-beam matching groove are respectively located on opposite sides of the intermediate connecting part, and the support boss has a support end, and in the second direction, the support end is arranged away from the module connecting part, and the first direction is perpendicular to the second direction.

[0006] Optionally, the cross-section of the intermediate connecting portion is in the shape of a "X".

[0007] The beneficial effect of this technical solution is that compared with designing the middle connecting part into a square structure, the middle connecting part of the cross-shaped structure uses less material and is lighter in weight. While reducing the weight of the supporting end plate, it also reduces the weight of the battery pack using the supporting end plate.

[0008] Optionally, the intermediate connecting part includes a first connecting end and two second connecting ends respectively located on both sides of the first connecting end in the second direction, a weight reducing groove is formed in the first connecting end, a plurality of reinforcing ribs are arranged in the weight reducing groove, and each of the reinforcing ribs is arranged in a third direction of the intermediate connecting part, and the third direction is the length direction of the intermediate connecting part.

[0009] The beneficial effect of this technical solution is that the weight-reducing grooves can further reduce the weight of the support end plate, and the multiple reinforcing ribs can better ensure the strength of the support end plate. The multiple mentioned in the embodiment of the present application refers to at least two.

[0010] Optionally, the beam matching groove extends into the first connecting end in the second direction.

[0011] The beneficial effect of this technical solution is that, on the one hand, the material used for the first connection end is further reduced, thereby reducing the weight of the supporting end plate; on the other hand, the space occupied by the supporting end plate is effectively utilized, thereby improving the space utilization rate in the battery pack, thereby reducing the volume of the battery pack and increasing the energy density of the battery pack.

[0012] Optionally, the intermediate connecting portion includes a first connecting end and two second connecting ends respectively located on both sides of the first connecting end in the second direction, and the module connecting portion is a plate-like structure perpendicular to the first direction, and the two second connecting ends are connected to the two first connecting ends in a one-to-one correspondence.

[0013] The beneficial effect of this technical solution is that the module connection part is designed to be a plate-like structure, which is light in weight and conducive to the lightweight of the battery pack. On the other hand, it is convenient to put the cable tie on the module connection part when connecting with the battery module.

[0014] Optionally, the module connection portion includes a first binding segment and a second binding segment arranged in the second direction, the first binding segment is arranged close to the first connection end in the second direction, and the position where the second connection end is connected to the module connection portion is located between the first binding segment and the second binding segment.

[0015] The beneficial effect of this technical solution is that: in this way, the two cable ties on the battery module can be respectively put on the first binding section and the second binding section, thereby fixing the support end plate more firmly.

[0016] Optionally, a first limiting protrusion is formed on the first binding section, the first limiting protrusion is located on a side of the first binding section facing the first connecting end, and a first tie receiving groove is formed between the first limiting protrusion and the second connecting end.

[0017] The beneficial effect of this technical solution is that: in this way, the cable tie can be better restricted in the first cable tie accommodating groove through the first limiting protrusion and the second connecting end, so that the cable tie is not easy to fall off.

[0018] Optionally, a second limiting protrusion and a third limiting protrusion arranged in the second direction are formed on the second binding section, the second limiting protrusion is arranged close to the second connecting end, the second limiting protrusion and the third limiting protrusion are both located on the side of the second binding section facing the crossbeam matching groove, and a second tie accommodating groove is formed between the second limiting protrusion and the third limiting protrusion.

[0019] The beneficial effect of this technical solution is that: in this way, the cable tie can be better restricted in the second cable tie accommodating groove by the second limiting protrusion and the third limiting protrusion, so that the cable tie is not easy to fall off.

[0020] Optionally, arc-shaped guide surfaces are provided at positions close to the first cable tie receiving groove at both ends of the module connecting portion in the third direction;

[0021] And / or, arc-shaped guide surfaces are provided at positions close to the second cable tie receiving groove at both ends of the module connecting portion in the third direction;

[0022] The first direction and the second direction are both perpendicular to the third direction.

[0023] The beneficial effect of this technical solution is that: in this way, stress concentration of the cable tie can be prevented at the arc-shaped guide surface, making the cable tie less likely to be cut.

[0024] Another aspect of the present application provides a battery pack, comprising an upper cold plate, an upper battery module and two lower battery modules, and a support end plate provided in the present application, wherein one module connection portion of the support end plate is connected to one of the lower battery modules, and another module connection portion of the support end plate is connected to another of the lower battery modules, the upper battery module is arranged above the upper cold plate, and the support boss supports the upper cold plate.

[0025] The technical solution provided by this application can achieve at least one of the following beneficial effects:

[0026] The support end plate and battery pack provided by the present application, when in use, are arranged between the two lower battery modules, the middle crossbeam between the two battery modules is inserted into the crossbeam matching groove to support the middle connecting part and the supporting boss, the two module connecting parts are connected with the cable ties of their respective corresponding modules to fix the support end plate, and the supporting end of the supporting boss is abutted against the cold plate at the bottom of the upper battery module to achieve the purpose of supporting the upper battery module. In this way, the support end plate utilizes the unused space (space above the middle crossbeam) of the existing battery, and the support end plate is used to support the upper battery module. Compared with raising the middle crossbeam as a whole to support the upper battery module, the material used to manufacture the battery case is reduced, and the overall weight is reduced.

[0027] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of a three-dimensional structure of an implementation manner of a support end plate provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the main structure of an implementation of a support end plate provided in an embodiment of the present application;

[0031] Figure 3 A partial front structural schematic diagram of an implementation manner of a battery pack provided in an embodiment of the present application;

[0032] Figure 4 A partial front view structural schematic diagram of an implementation manner of a battery pack provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] 01. Via hole; 02. Module connection part;

[0035] 03. Reinforcement ribs; 04. Weight reduction grooves;

[0036] 05. First limiting protrusion; 06. Middle connecting part;

[0037] 07. Arc-shaped guide surface; 08. Second limiting protrusion;

[0038] 09. The third limiting protrusion; 10. The supporting boss;

[0039] 11. Support end; 12. First lashing section;

[0040] 13. Second connecting end; 14. Second lashing section;

[0041] 15. Crossbeam matching groove; 16. Second cable tie receiving groove;

[0042] 17. First cable tie receiving slot; 18. First connecting end;

[0043] 19. Support end plate; 20. Cable tie;

[0044] 21. Lower battery module; 22. Upper battery module;

[0045] 23. Upper cold plate. DETAILED DESCRIPTION

[0046] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0047] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] 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.

[0049] like Figures 1 to 4As shown, one aspect of the present application provides a support end plate 19, including an intermediate connection part 06, a support boss 10 and two module connection parts 02, one of the module connection parts 02, the intermediate connection part 06 and the other module connection part 02 are connected in sequence in a first direction, a cross beam matching groove 15 is enclosed between the intermediate connection part 06 and the two module connection parts 02, the support boss 10 is fixed to the intermediate connection part 06, and in the second direction, the support boss 10 and the cross beam matching groove 15 are respectively located on opposite sides of the intermediate connection part 06, the support boss 10 has a support end 11, and the support end 11 is arranged away from the module connection part 02 in the second direction, and the first direction is perpendicular to the second direction.

[0050] The support end plate 19 provided in the present application is, when in use, arranged between the two lower battery modules, the middle crossbeam between the two battery modules is inserted into the crossbeam matching groove 15 to support the middle connection part 06 and the support boss 10, the two module connection parts 02 are connected to the cable ties 20 of the corresponding battery modules to fix the support end plate 19, the support end 11 of the support boss 10 is abutted against the cold plate at the bottom of the upper battery module to achieve the purpose of supporting the upper battery module, in this way, the support end plate 19 utilizes the existing battery including the unused space (the space above the middle crossbeam), and the support end plate 19 is used to support the upper battery module. Compared with raising the middle crossbeam as a whole to support the upper battery module, the materials used in manufacturing the battery case are reduced, and the overall weight is reduced.

[0051] In the embodiment of the present application, the cable tie 20 is preferably a steel belt.

[0052] Optionally, the cross section of the intermediate connecting portion 06 is in the shape of an "X". Compared with the intermediate connecting portion 06 designed as a square structure, the intermediate connecting portion 06 in the "X" shape uses less material and is lighter, which reduces the weight of the supporting end plate 19 and also reduces the weight of the battery pack using the supporting end plate 19.

[0053] Optionally, the intermediate connection portion 06 includes a first connection end 18, and two second connection ends 13 respectively located on both sides of the first connection end 18 in the second direction, a weight reduction groove 04 is formed in the first connection end 18, and a plurality of reinforcing ribs 03 are arranged in the weight reduction groove 04, and each of the reinforcing ribs 03 is arranged in a third direction of the intermediate connection portion 06, and the third direction is the length direction of the intermediate connection portion 06. Providing the weight reduction groove 04 can further reduce the weight of the support end plate 19, and providing a plurality of reinforcing ribs 03 can better ensure the strength of the support end plate 19. The multiple described in the embodiment of the present application refers to at least two. In the embodiment of the present application, the notch of the weight reduction groove 04 is preferably facing the support end 11 in the second direction.

[0054] Optionally, in the second direction, the cross beam matching groove 15 extends into the first connecting end 18. In this way, on the one hand, the material used for the first connecting end 18 is further reduced, and the weight of the supporting end plate 19 is reduced. On the other hand, the space occupied by the supporting end plate 19 is effectively utilized, and the space utilization rate in the battery pack is improved, thereby reducing the volume of the battery pack and improving the energy density of the battery pack.

[0055] Optionally, the intermediate connection portion 06 includes a first connection end 18, and two second connection ends 13 located on both sides of the first connection end in the second direction, and the module connection portion 02 is a plate-like structure perpendicular to the first direction, and the two second connection ends are connected to the two first connection ends in a one-to-one correspondence. Designing the module connection portion 02 as a plate-like structure is not only light in weight, but also conducive to the lightweight of the battery pack. On the other hand, it is convenient to put the cable tie 20 on the module connection portion 02 when connecting to the battery module. Of course, the module connection portion 02 can also be designed as a block structure.

[0056] Optionally, the module connection portion 02 includes a first binding segment 12 and a second binding segment 14 arranged in the second direction, the first binding segment 12 is arranged close to the first connection end 18 in the second direction, and the position where the second connection end 13 is connected to the module connection portion 02 is located between the first binding segment 12 and the second binding segment 14. In this way, the two tie bands 20 on the battery module can be respectively sleeved on the first binding segment 12 and the second binding segment 14, thereby fixing the support end plate 19 more firmly.

[0057] Optionally, a first limiting protrusion 05 is formed on the first binding section 12, the first limiting protrusion 05 is located on the side of the first binding section 12 facing the first connecting end 18, and a first cable tie receiving groove 17 is formed between the first limiting protrusion 05 and the second connecting end 13. In this way, the cable tie 20 can be better limited in the first cable tie receiving groove 17 by the first limiting protrusion 05 and the second connecting end 13, so that the cable tie 20 is not easy to fall off.

[0058] Optionally, a second limiting protrusion 08 and a third limiting protrusion 09 arranged in the second direction are formed on the second binding section 14, the second limiting protrusion 08 is arranged close to the second connecting end 13, the second limiting protrusion 08 and the third limiting protrusion 09 are both located on the side of the second binding section 14 facing the crossbeam matching groove 15, and a second cable tie receiving groove 16 is formed between the second limiting protrusion 08 and the third limiting protrusion 09. In this way, the cable tie 20 can be better limited in the second cable tie receiving groove 16 by the second limiting protrusion 08 and the third limiting protrusion 09, so that the cable tie 20 is not easy to fall off.

[0059] Optionally, arc-shaped guide surfaces 07 are provided at both ends of the module connecting portion 02 in the third direction near the first strap receiving groove 17;

[0060] And / or, arc-shaped guide surfaces 07 are provided at both ends of the module connecting portion 02 in the third direction near the second cable tie receiving groove 16;

[0061] The first direction and the second direction are both perpendicular to the third direction.

[0062] In this way, the arc-shaped guide surface 07 can prevent stress concentration on the cable tie 20, making it difficult for the cable tie 20 to be cut.

[0063] In the embodiment of the present application, the support end plate 19 is preferably die-cast, which has a fast molding speed and no complicated manufacturing process, thereby reducing the difficulty and cost of production and manufacturing.

[0064] In the embodiment of the present application, a via hole 01 is formed on the supporting end 11 of the supporting boss 10 , and the via hole 01 is used for fixed connection with the upper cold plate 23 .

[0065] Another aspect of the present application provides a battery pack, including an upper cold plate 23, an upper battery module 22 and two lower battery modules 21, and a support end plate 19 provided in an embodiment of the present application, wherein one module connection portion 02 of the support end plate 19 is connected to one of the lower battery modules 21, and another module connection portion 02 of the support end plate 19 is connected to another of the lower battery modules 21, the upper battery module 22 is arranged above the upper cold plate 23, and the support boss 10 supports the upper cold plate 23.

[0066] The battery pack provided in the present application adopts the support end plate 19 provided in the present application. When in use, the support end plate 19 is arranged between the two lower battery modules, the middle crossbeam between the two battery modules is inserted into the crossbeam matching groove 15 to support the middle connecting part 06 and the support boss 10, and the two module connecting parts 02 are connected to the cable ties 20 of their respective corresponding modules to fix the support end plate 19. The support end 11 of the support boss 10 abuts against the cold plate at the bottom of the upper battery module 22 to achieve the purpose of supporting the upper battery module 22. In this way, the support end plate 19 utilizes the existing battery including the unused space (the space above the middle crossbeam). The support end plate 19 is used to support the upper battery module 22. Compared with raising the middle crossbeam as a whole to support the upper battery module 22, the materials used to manufacture the battery case are reduced and the overall weight is reduced.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. Support end plate, characterized in that, It includes an intermediate connecting part, a supporting boss and two module connecting parts, one of the module connecting parts, the intermediate connecting part and the other module connecting part are connected in sequence in the first direction, a cross-beam matching groove is enclosed between the intermediate connecting part and the two module connecting parts, the supporting boss is fixed to the intermediate connecting part, and in the second direction, the supporting boss and the cross-beam matching groove are respectively located on opposite sides of the intermediate connecting part, the supporting boss has a supporting end, and in the second direction, the supporting end is arranged away from the module connecting part, and the first direction is perpendicular to the second direction.

2. The support end plate according to claim 1, characterized in that: The cross section of the middle connecting portion is in the shape of a "X".

3. The support end plate according to claim 2, characterized in that: The intermediate connecting part includes a first connecting end and two second connecting ends respectively located on both sides of the first connecting end in the second direction. A weight reducing groove is formed in the first connecting end, and a plurality of reinforcing ribs are arranged in the weight reducing groove. Each of the reinforcing ribs is arranged in a third direction of the intermediate connecting part, and the third direction is the length direction of the intermediate connecting part.

4. The support end plate according to claim 3, characterized in that: The beam matching groove extends into the first connecting end in the second direction.

5. The support end plate according to any one of claims 2 to 4, characterized in that: The intermediate connection portion includes a first connection end and two second connection ends respectively located on both sides of the first connection end in the second direction. The module connection portion is a plate-like structure perpendicular to the first direction. The two second connection ends are connected to the two first connection ends in a one-to-one correspondence.

6. The supporting end plate according to claim 5, characterized in that: The module connection portion includes a first binding segment and a second binding segment arranged in the second direction, wherein the first binding segment is arranged close to the first connection end in the second direction, and a position where the second connection end is connected to the module connection portion is located between the first binding segment and the second binding segment.

7. The supporting end plate according to claim 6, characterized in that: A first limiting protrusion is formed on the first binding section, and the first limiting protrusion is located on a side of the first binding section facing the first connecting end, and a first strap receiving groove is formed between the first limiting protrusion and the second connecting end.

8. The support end plate according to claim 7, characterized in that: A second limiting protrusion and a third limiting protrusion arranged in the second direction are formed on the second binding section, the second limiting protrusion is arranged close to the second connecting end, the second limiting protrusion and the third limiting protrusion are both located on the side of the second binding section facing the crossbeam matching groove, and a second tie accommodating groove is formed between the second limiting protrusion and the third limiting protrusion.

9. The support end plate according to claim 8, characterized in that: In the third direction, arc-shaped guide surfaces are provided at positions close to the first tie receiving groove at both ends of the module connecting portion; And / or, arc-shaped guide surfaces are provided at positions close to the second cable tie receiving groove at both ends of the module connecting portion in the third direction; The first direction and the second direction are both perpendicular to the third direction.

10. A battery pack, characterized in that: It includes an upper cold plate, an upper battery module and two lower battery modules, and a supporting end plate as described in any one of claims 1 to 9, one module connecting portion of the supporting end plate is connected to one of the lower battery modules, the other module connecting portion of the supporting end plate is connected to another of the lower battery modules, the upper battery module is arranged above the upper cold plate, and the supporting boss supports the upper cold plate.

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