Output pole protection device and battery module

Abstract

The utility model discloses an output pole protection device and a battery module. The output pole protection device comprises a base which is provided with a clamping groove; comprising a sealing cover part, a side blocking part and an elastic pressing part, the side blocking part is connected to the sealing cover part and forms an included angle with the sealing cover part, and the elastic pressing part is connected to the side blocking part in a bent mode and can be close to or away from the side blocking part so as to be clamped into or separated from the clamping groove; and the embedded nut is embedded in the base. According to the output pole protection device, the embedded nut is embedded in the base, the embedded nut can be stably installed on the base, when the external copper bar is fixed, the bolt and the embedded nut are stably connected, and the risk of falling off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an output pole protection device and a battery module. Background Art

[0002] Each battery module is provided with an output pole to achieve connection with different battery modules. In order to protect the output pole, an output pole protection device is also installed at the end of the battery module. The output pole protection device includes a base and a top cover. The top cover is arranged on the base, and the base is installed on the end plate. However, after the top cover is fixed on the base, it is not easy to disassemble, which is not conducive to the inspection of the output pole. Utility Model Content

[0003] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the utility model, an output pole protection device is provided, comprising: a base, on which a card slot is provided; an upper cover, comprising a sealing portion, a side stop portion and an elastic pressing portion, the side stop portion is connected to the sealing portion and is arranged at an angle with the sealing portion, the elastic pressing portion is bent and connected to the side stop portion, and the elastic pressing portion can approach or move away from the side stop portion to be engaged with or disengaged from the card slot; an embedded nut, which is buried in the base.

[0004] In some embodiments, a latching protrusion is provided on the side of the elastic pressing portion facing away from the sealing portion, and a necked portion is provided on the base. Along the direction from the necked portion to the inner cavity of the slot, the size of the slot along the X direction gradually increases, and the necked portion is provided at the opening of the slot for latching with the latching protrusion.

[0005] In some embodiments, a positioning protrusion is further provided on a side of the elastic pressing portion facing away from the sealing portion, and the positioning protrusion can be exposed relative to the base.

[0006] In some embodiments, the positioning protrusion is provided with a groove, and the notch of the groove is arranged away from the sealing portion.

[0007] In some embodiments, the embedded nut is provided with a plurality of limiting protrusions in the circumferential direction.

[0008] In some embodiments, each of the limiting protrusions includes at least two sections of sub-protrusions that are separated from each other along the axial direction of the embedded nut.

[0009] In some embodiments, a clamping portion is provided on the end surface of the base in the X direction, and the clamping portion is used to clamp with the end plate.

[0010] In some embodiments, a limiting portion is provided on the base, and the limiting portion is used to be inserted into the end plate to achieve the installation and limitation of the base on the end plate.

[0011] In some embodiments, the limiting portion includes at least one plug-in portion extending along the Z direction, so as to limit the movement of the base relative to the end plate along the Y direction through the plug-in portion.

[0012] In some embodiments, the limiting portion further includes at least one sub-rib, and along the Z direction, the width of the sub-rib along the X direction gradually increases and then gradually decreases, so as to limit the displacement of the base relative to the end plate along the Z direction and the X direction.

[0013] One aspect of the utility model provides a battery module, comprising the output pole protection device described above.

[0014] In summary, the output pole protection device and battery module provided by the utility model have the following technical effects:

[0015] By configuring the upper cover to include a sealing portion, a side stop portion and an elastic pressing portion, the upper cover can be elastically deformed by pressing the elastic pressing portion and be clamped in the clamping slot. In this way, the upper cover and the base can be detachably installed, which is convenient for subsequent maintenance of the output pole. By pressing the elastic pressing portion, the upper cover can be conveniently disassembled relative to the base. At the same time, by burying an embedded nut on the base, the embedded nut is installed on the base when the base is formed, and the embedded nut can be stably installed on the base. When the external copper busbar is fixed, the bolt and the embedded nut are stably connected to avoid the risk of falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure in which the output pole protection device of an embodiment of the utility model is installed on an end plate;

[0017] Figure 2 for Figure 1 A top view of the output pole protection device installed on the end plate;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross section along the AA direction;

[0019] Figure 4 for Figure 3 The enlarged schematic diagram of point I in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the output pole protection device of an embodiment of the utility model;

[0021] Figure 6 for Figure 5 Exploded diagram of the output pole protection device in .

[0022] Figures: 100-output pole protection device, 10-base, 11-card slot, 12-narrowed portion, 13-opening, 14-through groove, 15-card connection portion, 16-limiting portion, 161-plug-in block, 162-sub-rib, 17-reinforcement rib, 20-upper cover, 21-sealing portion, 22-elastic pressing portion, 221-card setting protrusion, 23-positioning protrusion, 231-groove, 24-side stop, 30-embedded nut, 31-limiting protrusion, 311-sub-protrusion, 200-end plate. DETAILED DESCRIPTION

[0023] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] See also Figures 1 to 6 , an output pole protection device 100 provided by an embodiment of the utility model includes a base 10, an upper cover 20 and an embedded nut 30.

[0028] Among them, see Figures 4 to 6 A card slot 11 is provided on the base 10; the upper cover 20 includes a sealing portion 21, a side stop portion 24 and an elastic pressing portion 22, the side stop portion 24 is connected to the sealing portion 21 and is arranged at an angle with the sealing portion 21, the elastic pressing portion 22 is bent and connected to the side stop portion 24, and the elastic pressing portion 22 can approach or move away from the side stop portion 24 to be clamped in or out of the card slot 11; the embedded nut 30 is buried in the base 10.

[0029] The output pole protection device 100 described above, by configuring the upper cover 20 to include a sealing portion 21, a side stop portion 24 and an elastic pressing portion 22, can be elastically deformed by pressing the elastic pressing portion 22 and be clamped in the clamping slot 11. In this way, the upper cover 20 and the base 10 are detachably installed, so that when the output pole needs to be repaired later, the upper cover 20 can be conveniently disassembled relative to the base 10 by pressing the elastic pressing portion 22. At the same time, by burying an embedded nut 30 on the base 10, since the embedded nut 30 is installed on the base 10 when the base 10 is formed, the embedded nut 30 can be stably installed on the base 10. When fixing the external copper busbar, the bolt and the embedded nut 30 are stably connected to avoid the risk of falling off.

[0030] It can be understood that in order to ensure the stability of the upper cover 20 when it is clamped on the base 10, two clamping slots 11 are provided on the base 10 along the length direction of the base 10, and the middle area of ​​the two clamping slots 11 is a groove 14 for passing the copper busbar; correspondingly, two elastic pressing parts 22 are provided on the upper cover 20, and one elastic pressing part 22 is correspondingly arranged in one clamping slot 11.

[0031] For the convenience of description, the length direction of the base 10 is defined as the X direction, the insertion direction of the copper bar is defined as the Y direction, and the axial direction of the embedded nut 30 is defined as the Z direction.

[0032] See also Figures 4 to 6 For the structural diagram of the upper cover 20 of the present embodiment, the elastic pressing portion 22 in the present embodiment is set with its opening facing upward, so that it is convenient for the hand to press the free end of the elastic pressing portion 22 so that the elastic pressing portion 22 is elastically deformed and then snapped into the slot 11 of the base 10.

[0033] Furthermore, in order to ensure the tightness of the clamping connection between the upper cover 20 and the base 10, a clamping protrusion 221 is provided on the side of the elastic pressing portion 22 facing away from the sealing portion 21, and the clamping protrusion 221 is used to abut against the groove wall of the slot 11. In this way, not only the side wall of the elastic pressing portion 22 and the groove wall of the slot 11 are abutted against each other through the elastic force of the elastic pressing portion 22, but also the clamping protrusion 221 and the groove wall of the slot 11 are set to abut against each other, thereby further ensuring the tightness of the clamping connection between the elastic pressing portion 22 and the base 10.

[0034] Among them, see Figure 4When the clamping protrusion 221 and the slot wall of the clamping slot 11 are against each other, the base 10 is provided with a constricted portion 12, which is provided at the opening 13 of the clamping slot 11 and extends into the clamping slot 11 for clamping with the clamping protrusion 221. Thus, by separately providing the constricted portion 12 and the clamping protrusion 221 for clamping, the stability of the elastic pressing portion 22 clamped in the clamping slot 11 is ensured, and the constricted portion 12 exerts a downward force on the clamping protrusion 221 to prevent the elastic pressing portion 22 from popping out of the clamping slot 11. In other embodiments, a clamping slot may be provided on the slot wall of the clamping slot 11, and the clamping protrusion 221 may be clamped in the clamping slot, so that the clamping protrusion 221 and the slot wall of the clamping slot 11 can be clamped tightly.

[0035] Among them, see Figures 4 to 6 In one embodiment of the utility model, in order to facilitate hand operation, the elastic pressing portion 22 is further provided with a positioning protrusion 23. The positioning protrusion 23 is provided on the side of the elastic pressing portion 22 away from the sealing portion 21 and is located above the clamping protrusion 221 so as to be exposed relative to the base 10. In this way, by providing the positioning protrusion 23, the positioning protrusion 23 is exposed outside the base 10, which is convenient for positioning during hand operation, that is, the hand presses the position where the positioning protrusion 23 is located to apply pressure to the elastic pressing portion 22, thereby causing the elastic pressing portion 22 to undergo elastic deformation.

[0036] Furthermore, a groove 231 is provided on the positioning protrusion 23, and the notch of the groove 231 is arranged away from the cover portion 21, so that by providing the groove 231, when a finger presses the positioning protrusion 23, the finger can be pressed into the groove 231 to avoid slipping.

[0037] Among them, when the embedded nut 30 in this embodiment is embedded in the base 10, the embedded nut 30 is placed in the mold, and the base 10 can be embedded in the base 10 during injection molding, so that the stability of the embedded nut 30 embedded in the base 10 is guaranteed. It can be understood that the inner surface of the embedded nut 30 is provided with an internal thread, so as to achieve a threaded connection with the bolt.

[0038] For further information, see Figure 6 In order to prevent the bolt from applying an upward pulling force to the embedded nut 30 during disassembly and causing the embedded nut 30 to fall off relative to the base 10, the embedded nut 30 is provided with a plurality of limiting protrusions 31 in the circumferential direction. That is, by setting the limiting protrusions 31 embedded in the base 10, the stability of the embedded nut 30 buried in the base 10 is increased to prevent it from falling off.

[0039] Furthermore, each limiting protrusion 31 includes at least two sections of sub-protrusions 311 separated from each other along the axial direction of the embedded nut 30, that is, each limiting protrusion 31 includes at least 2 sections along the Z direction, and there is a gap between the sub-protrusions 311, and no protrusions are set in the gap. When the base 10 is injection molded, the area without the protrusion can be embedded with material by part of the base 10, thereby increasing the stability of the embedded nut 30 buried in the base 10 and further increasing the anti-falling effect.

[0040] See also Figures 4 to 6 , is a schematic diagram of the structure of the base 10, a through groove 14 for copper bars to be passed through is formed on the base 10, the through groove 14 is arranged along the Y direction, the cover portion 21 of the upper cover 20 is located above the through groove 14, the base 10 is used to be installed on the end plate 200, when installing the base 10 on the end plate 200, please refer to Figures 1 to 3 A clamping portion 15 is provided on the end face of the base 10 in the length direction, and the clamping portion 15 is used to clamp with the end plate 200, that is, a clamping portion 15 is provided on the end face of the base 10 in the X direction, and a clamping groove is provided on the end plate 200 at a position corresponding to the clamping portion 15.

[0041] Specifically, when the output pole protection device 100 is installed on the end plate 200, the output pole protection device 100 is pushed along the Y direction to be snapped into the end plate 200. When the snap-in portion 15 on the base 10 is pushed into place, the snap-in portion 15 is snapped into the snap-in groove and a clicking sound is heard, indicating that the base 10 is installed in place on the end plate 200.

[0042] Furthermore, in order to limit the installation of the base 10, a limiting portion 16 is provided on the base 10, and the limiting portion 16 is used to be inserted into the end plate 200 to limit the installation of the base 10 on the end plate 200. That is, by setting the limiting portion 16, movement is avoided when the base 10 is installed on the end plate 200.

[0043] Specifically, the limiting portion 16 includes at least one plug-in portion 161 extending along the Z direction, so as to limit the movement of the base 10 relative to the end plate 200 along the Y direction through the plug-in portion 161, that is, after the base 10 is installed on the end plate 200, since the plug-in portion 161 is arranged along the Z direction, when the base 10 may move along the Y direction, mutual obstruction occurs between the end plate 200 and the plug-in portion 161, so as to limit the movement of the base 10 relative to the end plate 200 along the Y direction.

[0044] Furthermore, the limiting portion 16 further includes at least one sub-rib 162. Along the Z direction, the width of the sub-rib 162 along the X direction gradually increases and then gradually decreases, so as to limit the displacement of the base 10 relative to the end plate 200 along the Z direction and the X direction. That is, the sub-rib 162 is roughly in a triangular shape. In this way, when the base 10 may move relative to the end plate 200 along the Z direction, the end plate 200 and the base 10 block each other to limit the movement of the base 10 relative to the end plate 200 along the Z direction; when the base 10 may move relative to the end plate 200 along the X direction, the end plate 200 and the base 10 block each other to limit the movement of the base 10 relative to the end plate 200 along the Z direction. When the base 10 moves in the direction, the sub-rib 162 and the end plate 200 block each other to limit the movement of the base 10 relative to the end plate 200 along the X direction, so that the sub-rib 162 limits the movement of the base 10 in the Z direction and the X direction, thereby realizing the installation limit of the base 10; at the same time, by gradually increasing the width of the sub-rib 162 along the X direction and then gradually decreasing it along the Z direction, the effect of saving material is achieved when the sub-rib 162 is formed, and at the same time, the connection area between the sub-rib 162 and the main body of the base 10 is large, and the structural strength of the sub-rib 162 can be guaranteed.

[0045] Among them, see Figure 5 and Figure 6 In order to ensure the structural strength of the base 10, a well-shaped reinforcing rib 17 is provided on the base 10, so as to increase the structural strength of the base 10 through the reinforcing rib 17. At the same time, since there are gaps between the reinforcing ribs 17, the reinforcing rib 17 can ensure the structural strength while reducing the amount of injection material, thereby avoiding excessive injection material during injection molding and causing excessive bubbles to enter the material, thereby affecting the structural strength of the product during demolding.

[0046] The output pole protection device 100 of this embodiment is installed on the end plate 200. Figures 1 to 3 shown.

[0047] In another embodiment, the utility model further provides a battery module, including the above-mentioned output pole protection device 100 , and also including a battery pack and an end plate 200 . The end plate 200 is arranged at the end of the battery pack, and the output pole protection device 100 is connected to the end plate 200 .

[0048] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. An output pole protection device (100), characterized in that: include: A base (10), wherein a card slot (11) is provided on the base (10); The upper cover (20) comprises a cover portion (21), a side stop portion (24) and an elastic pressing portion (22), wherein the side stop portion (24) is connected to the cover portion (21) and is arranged at an angle with the cover portion (21), the elastic pressing portion (22) is bent and connected to the side stop portion (24), and the elastic pressing portion (22) can approach or move away from the side stop portion (24) to be engaged with or disengaged from the engagement slot (11); An embedded nut (30) is embedded in the base (10).

2. The output pole protection device (100) according to claim 1, characterized in that: A locking protrusion (221) is provided on the side of the elastic pressing portion (22) facing away from the sealing portion (21), and a necking portion (12) is provided on the base (10). The necking portion (12) is arranged at the opening (13) of the locking groove (11) and is used for locking with the locking protrusion (221).

3. The output pole protection device (100) according to claim 1, characterized in that: A positioning protrusion (23) is also provided on the side of the elastic pressing portion (22) facing away from the sealing portion (21), and the positioning protrusion (23) can be exposed relative to the base (10).

4. The output pole protection device (100) according to claim 3, characterized in that: The positioning protrusion (23) is provided with a groove (231), and the notch of the groove (231) is arranged away from the side stop portion.

5. The output pole protection device (100) according to any one of claims 1 to 4, characterized in that: The embedded nut (30) is provided with a plurality of limiting protrusions (31) in the circumferential direction.

6. The output pole protection device (100) according to claim 5, characterized in that: Each of the limiting protrusions (31) comprises at least two sections of sub-protrusions (311) which are separated and arranged along the axial direction of the embedded nut (30).

7. The output pole protection device (100) according to any one of claims 1 to 4 or 6, characterized in that: A clamping portion (15) is provided on the end surface of the base (10) in the X direction, and the clamping portion (15) is used for clamping with the end plate (200).

8. The output pole protection device (100) according to any one of claims 1 to 4 or 6, characterized in that: The base (10) is provided with a limiting portion (16), and the limiting portion (16) is used to be inserted into the end plate (200) to achieve installation limiting of the base (10) on the end plate (200).

9. The output pole protection device (100) according to claim 8, characterized in that: The limiting portion (16) comprises at least one plug-in portion (161) extending along the Z direction, so as to limit the movement of the base (10) relative to the end plate (200) along the Y direction through the plug-in portion (161).

10. The output pole protection device (100) according to claim 8, characterized in that: The limiting portion (16) further comprises at least one sub-rib (162), and along the Z direction, the width of the sub-rib (162) along the X direction gradually increases and then gradually decreases, so as to limit the displacement of the base (10) relative to the end plate (200) along the Z direction and the X direction.

11. A battery module, characterized in that: It comprises the output pole protection device (100) as claimed in any one of claims 1 to 10.

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