Fusing device and battery pack

Abstract

The utility model provides a fusing device and a battery pack, the fusing device comprises a base, a fuse and a top cover; the base is provided with an accommodating groove with an open top, the fuse is arranged in the accommodating groove, the top cover covers the base, and one side of the top cover is clamped with the base through a clamping structure; a limiting plate extending outwards is arranged on the other side of the top cover relative to the side clamped with the base, a limiting groove is formed in the base, the limiting plate extends into the limiting groove and abuts against the top of the limiting groove, and a gap is formed between the limiting plate and the bottom of the limiting groove. According to the fusing device provided by the utility model, one side of the top cover is clamped with the base through the clamping structure, and the other side of the top cover abuts against the limiting groove on the base through the limiting plate, so that the top cover is convenient to open and disassemble, the fuse can be maintained and disassembled, and the fusing device is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a fuse device. Meanwhile, the utility model also relates to a battery pack provided with the fuse device. Background Art

[0002] The battery fuse is an important component of the battery pack, which can protect the electrical components in the high-voltage circuit in the whole pack. At present, most fuses are integrated in the battery distribution box, but as the voltage platform of the whole vehicle increases, larger fuses should be selected accordingly. In addition, the height space of the battery pack is constantly compressed, and affected by the installation space of surrounding electrical components, the installation space reserved for the fuse in the battery distribution box has become very limited.

[0003] In the prior art, there is a situation where the fuse is set in the fuse box, and then the fuse box is integrated as a whole outside the battery distribution box. However, due to the limited space arrangement in the battery pack, after the battery fuse box is installed in the battery pack, the operating space when opening the fuse box is small, which increases the difficulty of operation and is inconvenient to repair and remove the fuse in the fuse box. Utility Model Content

[0004] In view of this, the utility model aims to provide a fuse device to facilitate the maintenance and disassembly of the fuse.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A fuse device,

[0007] Including base, fuse and top cover;

[0008] The base is provided with a receiving groove with an open top, the fuse is arranged in the receiving groove, the top cover is buckled on the base, and one side of the top cover is clamped with the base through a clamping structure;

[0009] Relative to the side that is clamped with the base, the other side of the top cover is provided with a limiting plate extending outward, the base is provided with a limiting groove, the limiting plate extends into the limiting groove and abuts against the top of the limiting groove, and a gap is provided between the limiting plate and the bottom of the limiting groove.

[0010] Furthermore, the top cover is provided with a clamping plate extending downward, and the clamping structure includes a clamping groove provided on the clamping plate, and a clamping protrusion provided on the base and clamped with the clamping groove.

[0011] Furthermore, the top cover is provided with a connecting arm, the clamping plate is provided on the connecting arm, and the connecting arm is provided with a pressing plate extending upward;

[0012] By pressing the pressing plate, the clamping plate can be rotated outwards, so that the clamping groove is away from the clamping protrusion.

[0013] Furthermore, the base is provided with a support platform for supporting the fuse, and the top cover is provided with a pressing portion for pressing against the top of the fuse.

[0014] Furthermore, the abutting portion includes a clamping arm provided on the top cover, one end of the clamping arm in the length direction is connected to the top cover, and the other end of the clamping arm in the length direction abuts against the top of the fuse.

[0015] Furthermore, a plurality of openings are provided between the top cover and the base and are arranged at intervals around the circumference of the base, and an external copper busbar connected to the fuse passes through the openings.

[0016] Furthermore, the inner wall of the opening abuts against both sides of the external copper busbar in the width direction: and / or,

[0017] A guard plate extending downward is provided at the top of the opening.

[0018] Furthermore, the top cover is provided with a first vent connected to the receiving groove, and the base is provided with a second vent connected to the receiving groove;

[0019] The top cover, the base and the fuse enclosure form an air flow channel connecting the first vent and the second vent.

[0020] Furthermore, the top cover is provided with a first baffle and a second baffle extending into the receiving groove and abutting against the side wall of the receiving groove;

[0021] The first baffle is used to limit the displacement of the top cover in the length direction of the base;

[0022] The second baffle is used to limit the displacement of the top cover in the width direction of the base.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] The fuse device described in the utility model has one side of the top cover clamped with the base through the clamping structure, and the other side of the top cover abuts against the limiting groove on the base through the limiting plate, which facilitates the opening and disassembly of the top cover, and further enables the maintenance and disassembly of the fuse, has a simple structure and is easy to operate.

[0025] In addition, by setting a clamping arm to clamp the fuse, and connecting one end of the clamping arm in the length direction to the top cover, and the other end in the length direction to the fuse, the structure is simple and the clamping arm can achieve elastic clamping of the fuse.

[0026] In addition, by providing the first vent, the second vent and the airflow channel, it is convenient to realize convection heat exchange of the fuse to prevent the fuse from being damaged by overheating. And by providing the first baffle and the second baffle respectively limiting the displacement of the top cover in the length and width directions of the base, it is beneficial to ensure the stability of the top cover when it is installed on the base.

[0027] Another object of the present invention is to provide a battery pack, in which the fuse device as described above is provided.

[0028] The battery pack described in the present invention and the above-mentioned fuse device have the same technical effects as the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0030] Figure 1 It is a structural schematic diagram of a fuse device according to an embodiment of the utility model from one perspective;

[0031] Figure 2 for Figure 1 A magnified view of part A;

[0032] Figure 3 It is a structural schematic diagram of the fuse device according to an embodiment of the utility model from another perspective;

[0033] Figure 4 for Figure 3 A magnified view of part B;

[0034] Figure 5 It is a structural schematic diagram of a top cover according to an embodiment of the utility model from one viewing angle;

[0035] Figure 6 A schematic structural diagram of the top cover according to an embodiment of the utility model from another perspective;

[0036] Figure 7 for Figure 6 Enlarged view of part C;

[0037] Figure 8 This is a structural schematic diagram of a fuse and a base according to an embodiment of the utility model;

[0038] Fig. 9 This is a schematic diagram of the structure of the base according to an embodiment of the utility model;

[0039] Fig.10 It is a front view of the fuse device according to the embodiment of the utility model;

[0040] Fig.11 for Fig.10 Cross-sectional view along the DD direction.

[0041] Description of reference numerals:

[0042] 1. Base; 2. Fuse; 201. Main body; 202. Connecting end; 3. Top cover; 4. Accommodating groove; 5. Limiting groove; 6. Limiting plate; 7. Avoiding groove; 8. Snap-on plate; 9. Snap-on groove; 10. Snap-on protrusion; 11. Pressing plate; 12. Connecting arm;

[0043] 13. Guide surface; 14. Support platform; 15. Stud; 16. Abutment plate; 17. Abutment arm; 18. Opening; 19. Guard plate; 20. First vent; 21. Second vent; 22. Air flow channel; 23. First baffle; 24. Second baffle. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0045] In the description of the present invention, it should be noted that the terms "upper", "lower", "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 invention 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 invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" 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 an indirect connection through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] Embodiment 1

[0049] This embodiment relates to a fuse device, the overall structure of which is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, the fuse device includes a base 1, a fuse 2 and a top cover 3. The base 1 is provided with a receiving groove 4 with an open top, and the fuse 2 is arranged in the receiving groove 4. The top cover 3 is buckled on the base 1, and one side of the top cover 3 is clamped with the base 1 through a clamping structure. Relative to the side clamped with the base 1, the other side of the top cover 3 is provided with a limit plate 6 extending outward, and the base 1 is provided with a limit groove 5. The limit plate 6 extends into the limit groove 5 and abuts against the top of the limit groove 5, and a gap is provided between the limit plate 6 and the bottom of the limit groove 5.

[0050] It can be understood that, in the present embodiment, one side of the top cover 3 is engaged with the base 1 through the engaging structure, and the other side of the top cover 3 is engaged with the limiting groove 5 on the base 1 through the limiting plate 6. Then, when it is necessary to disassemble and replace the fuse 2, only one side of the engaging structure is unlocked, and then the top cover 3 is moved and the limiting plate 6 is pulled out from the limiting groove 5, so that the top cover 3 can be opened and disassembled, and then the fuse 2 can be disassembled and replaced. The structure is simple and the operation is convenient.

[0051] In addition, it should be noted that due to the space layout in the battery pack, when the fuse device is installed in the battery pack, there is often a larger hand operation space on one side of the fuse device and a smaller hand operation space on the other side. Therefore, when the fuse device is installed in the battery pack, it is preferred that the side where the top cover 3 and the base 1 are clamped face the larger operation space, and the side where the limit plate 6 is provided face the smaller operation space. This makes it easier to unlock the clamping structure and thus facilitate the opening of the top cover 3.

[0052] Based on the above overall introduction, as a preferred implementation, in this embodiment, a downwardly extending clamping plate 8 is provided on the top cover 3, and the clamping structure includes a clamping groove 9 provided on the clamping plate 8, and a clamping protrusion 10 provided on the base 1 and clamped with the clamping groove 9. Such a configuration has a simple structure and is easy to operate. In a specific implementation, a guide surface 13 for guiding the clamping groove 9 to clamp with the clamping protrusion 10 can also be provided on the clamping protrusion 10 to facilitate the clamping operation of the clamping groove 9 and the clamping protrusion 10.

[0053] As a preferred implementation method, Figure 2 and Figure 5As shown in the figure, the top cover 3 is provided with a connecting arm 12, the clamping plate 8 is provided on the connecting arm 12, and the connecting arm 12 is provided with a pressing plate 11 extending upward, by pressing the pressing plate 11, the clamping plate 8 can be rotated outward, so that the clamping groove 9 is away from the clamping protrusion 10. In addition, in order to facilitate pressing the pressing plate 11, the top cover 3 is provided with an inwardly recessed avoidance groove 7 for avoiding the pressing plate 11, and the connecting arm 12 is connected between the two side walls of the avoidance groove 7.

[0054] like Figure 2 and Figure 5 As shown in , by arranging the clamping plate 8 on the connecting arm 12 and arranging the pressing plate 11 extending upward on the connecting arm 12, when the pressing plate 11 is pressed, the clamping plate 8 can rotate around the center line of the connecting arm 12, thereby moving away from the clamping protrusion 10. In this way, the top cover 3 can be opened without inserting the hand into the hand operation space between the fuse device and the relevant components of the battery pack, which further facilitates the opening of the top cover 3.

[0055] As a preferred example, Figure 8 and Fig. 9 As shown in the figure, the base 1 is provided with a support platform 14 for supporting the fuse 2, and the top cover 3 is provided with a pressing part for pressing against the top of the fuse 2. By providing the support platform 14 and the pressing part, the position of the fuse 2 in the receiving slot 4 can be limited, so as to prevent the fuse 2 from shaking in the receiving slot 4 during transportation.

[0056] In addition, if Figure 8 As shown in the figure, the fuse 2 includes a main body 201 and connection ends 202 provided at both ends of the main body 201, and the connection ends 202 are used to connect with an external copper busbar. The support platform 14 can be provided at both ends of the length direction of the base 1, so as to support the connection ends 202 at both ends respectively. In addition, a stud 15 extending upward is provided on the support platform 14, and a through hole for the stud 15 to pass through is provided on the connection end 202.

[0057] In addition, Figure 8 As shown in the figure, the support platform 14 abuts against the end of the main body 201, thereby limiting the displacement of the fuse 2 in the length direction of the base 1. Abutment plates 16 are also provided on the support platform 14, and the abutment plates 16 abut against both sides of the connection end 202 along the width direction of the base 1, thereby limiting the displacement of the fuse 2 in the width direction of the base 1.

[0058] As a preferred implementation method, Figure 5 and Figure 6As shown in the figure, in this embodiment, the abutting portion includes a clamping arm 17 provided on the top cover 3, one end of the clamping arm 17 in the length direction is connected to the top cover 3, and the other end of the clamping arm 17 in the length direction abuts against the top of the fuse 2. Such a configuration has a simple structure and can realize elastic clamping of the fuse 2 through the clamping arm 17, thereby preventing the clamping arm 17 from abutting against the fuse 2 and causing surface damage to the fuse 2.

[0059] In addition, if Figure 6 As shown in the figure, in this embodiment, two symmetrically arranged abutting arms 17 are provided, and the ends of the two abutting arms close to each other are connected together and then connected to the top cover 3, and the ends of the two abutting arms 17 away from each other respectively abut the two ends of the main body 201 in the axial direction. Such a configuration is simple in structure, convenient for arrangement, and convenient for better abutting against the fuse 2 to prevent the fuse 2 from shaking.

[0060] As a preferred implementation, in this embodiment, a plurality of openings 18 are provided between the top cover 3 and the base 1 and are arranged at intervals around the circumference of the base 1, and the external copper busbar connected to the fuse 2 passes through the opening 18. Figure 1 and Figure 3 As shown in , openings 18 are provided between the top cover 3 and the base 1 at both sides of the length and width direction of the base 1. It can be understood that a plurality of openings 18 are provided between the top cover 3 and the base 1 and are arranged at intervals around the circumference of the base 1, which facilitates the extension of the external copper busbar and can adapt to the copper busbar connection methods of different schemes, and has good practicality.

[0061] Preferably, in this embodiment, the inner wall of the opening 18 abuts against both sides of the external copper bar in the width direction, and a guard plate 19 extending downward is provided at the top of the opening 18. By making the inner wall of the opening 18 abut against both sides of the external copper bar in the width direction, the external copper bar can be prevented from rotating around the stud 15, thereby ensuring the stability of the connection between the copper bar and the fuse 2.

[0062] Furthermore, by providing a downwardly extending guard plate 19 at the top of the opening 18, the opening 18 can be shielded, thereby preventing a person from inserting his fingers into the fuse box and contacting the fuse 2 during operation. Figure 3 As shown in FIG. 1 , the portion where the top of the guard plate 19 is connected to the top cover 3 is relatively thin, so that when the external copper bar is connected to the fuse 2 , the guard plate 19 can be broken off, thereby not affecting the external copper bar passing through the opening 18 .

[0063] Of course, in this embodiment, the inner wall of the opening 18 is in contact with both sides of the width direction of the external copper bar, which is only a preferred implementation. In addition, a protruding portion extending toward the copper bar can be provided on the inner wall of the opening 18, and the protruding portion is in contact with both sides of the width direction of the copper bar. In this case, the external copper bar can also be prevented from rotating. In addition, in other embodiments, the above-mentioned guard plate 19 may not be provided.

[0064] As a preferred implementation method, Fig.10 and Fig.11 As shown in the figure, in this embodiment, a first vent 20 communicating with the receiving groove 4 is provided on the top cover 3, and a second vent 21 communicating with the receiving groove 4 is provided on the base 1. The top cover 3, the base 1 and the fuse enclosure form an airflow channel 22 communicating with the first vent 20 and the second vent 21.

[0065] like Figure 5 and Fig. 9 and Fig.11 As shown in the figure, the first vents 20 are multiple and arranged on the top of the top cover 3, the second vents 21 are multiple and arranged on the bottom of the base 1, and airflow channels 22 are formed at positions close to both sides in the width direction of the base 1. By providing the first vents 20, the second vents 21 and the airflow channels 22, it is convenient to realize convection heat exchange of the fuse 2, and prevent the fuse 2 from being damaged by overheating.

[0066] Preferably, in this embodiment, the top cover 3 is provided with a first baffle 23 and a second baffle 24 which extend into the receiving groove 4 and abut against the side wall of the receiving groove 4. The first baffle 23 is used to limit the displacement of the top cover 3 in the length direction of the base 1, and the second baffle 24 is used to limit the displacement of the top cover 3 in the width direction of the base 1. In specific implementation, Figure 6 and Figure 7 As shown in the figure, the first baffle 23 and the second baffle 24 are both arranged at the four corners of the circumference of the top cover 3, and the first baffle 23 abuts against the side wall of the accommodating groove 4 in the length direction of the base 1, and the second baffle 24 abuts against the side wall of the accommodating groove 4 in the width direction of the base 1.

[0067] In addition, in actual settings, the downward extension distance of the first baffle 23 and the second baffle 24 can be shorter so as not to hinder the opening of the top cover 3. In this embodiment, the first baffle 23 and the second baffle 24 are provided to limit the displacement of the top cover 3 in the length and width directions of the base 1, which is conducive to ensuring the stability of the top cover 3 when it is installed on the base 1.

[0068] When assembling the fuse device of this embodiment, the fuse 2 can be first installed on the base 1, and then the external copper bar can be connected to the connection end 202 and tightened with a nut, and finally the top cover 3 can be buckled onto the base 1.

[0069] When the fuse 2 needs to be repaired or replaced, the pressing plate 11 can be pressed to move the clamping groove 9 away from the clamping protrusion 10, so that the clamping structure stops clamping. Then the top cover 3 can be rotated to open the top cover 3, and after rotating to a certain angle, the top cover 3 can be pulled outward, and the limiting plate 6 is pulled out of the limiting groove 5, so that the top cover 3 is removed, and then the fuse 2 can be repaired or replaced.

[0070] The fuse device of this embodiment is convenient for disassembly of the top cover 3, and convenient for maintenance and replacement of the fuse 2. Moreover, by providing the abutting arm 17 to abut the fuse 2, the structure is simple, and the fuse 2 can be elastically abutted by the abutting arm 17. Moreover, by providing the first vent 20, the second vent 21 and the air flow channel 22, it is convenient to achieve convection heat exchange of the fuse 2.

[0071] Embodiment 2

[0072] The present embodiment relates to a battery pack, in which the fuse device of the first embodiment is provided.

[0073] The battery pack of this embodiment and the fuse device of the first embodiment have the same technical effects as the prior art, and will not be described in detail here.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuse device, characterized in that: Including base, fuse and top cover; The base is provided with a receiving groove with an open top, the fuse is arranged in the receiving groove, the top cover is buckled on the base, and one side of the top cover is clamped with the base through a clamping structure; Relative to the side that is clamped with the base, the other side of the top cover is provided with a limiting plate extending outward, the base is provided with a limiting groove, the limiting plate extends into the limiting groove and abuts against the top of the limiting groove, and a gap is provided between the limiting plate and the bottom of the limiting groove.

2. The fuse device according to claim 1, characterized in that: The top cover is provided with a clamping plate extending downward, and the clamping structure comprises a clamping groove provided on the clamping plate, and a clamping protrusion provided on the base and clamped with the clamping groove.

3. The fuse device according to claim 2, characterized in that: The top cover is provided with a connecting arm, the clamping plate is provided on the connecting arm, and the connecting arm is provided with a pressing plate extending upward; By pressing the pressing plate, the clamping plate can be rotated outwards, so that the clamping groove is away from the clamping protrusion.

4. The fuse device according to claim 1, characterized in that: The base is provided with a supporting platform for supporting the fuse, and the top cover is provided with a pressing part for pressing against the top of the fuse.

5. The fuse device according to claim 4, characterized in that: The abutting portion includes a abutting arm disposed on the top cover, one end of the abutting arm in the length direction is connected to the top cover, and the other end of the abutting arm in the length direction abuts against the top of the fuse.

6. The fuse device according to claim 1, characterized in that: A plurality of openings are arranged between the top cover and the base and are spaced around the circumference of the base, and an external copper busbar connected to the fuse passes through the openings.

7. The fuse device according to claim 6, characterized in that: The inner wall of the opening abuts against both sides of the external copper busbar in the width direction: and / or, A guard plate extending downward is provided at the top of the opening.

8. The fuse device according to claim 1, characterized in that: The top cover is provided with a first vent connected to the receiving groove, and the base is provided with a second vent connected to the receiving groove; The top cover, the base and the fuse enclosure form an air flow channel connecting the first vent and the second vent.

9. The fuse device according to claim 1, characterized in that: The top cover is provided with a first baffle and a second baffle extending into the receiving groove and abutting against the side wall of the receiving groove; The first baffle is used to limit the displacement of the top cover in the length direction of the base; The second baffle is used to limit the displacement of the top cover in the width direction of the base.

10. A battery pack, characterized in that: The battery pack is provided with the fuse device according to any one of claims 1 to 9.

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