Pre-charging resistor mounting device and battery pack thereof

Abstract

The utility model discloses a precharge resistor mounting device and a battery pack thereof, the precharge resistor mounting device comprises a square mounting box with an opening, two longitudinal plates and two transverse plates are respectively arranged in the mounting box along the length direction and the width direction, and the longitudinal plates and the transverse plates are encircled to form a space for placing a precharge resistor; the transverse plate is in sliding connection with the side plate of the mounting box, and a first spring is fixedly arranged between the transverse plate and the end plate of the mounting box; the longitudinal plate is in sliding connection with the end plate of the mounting box, and a second spring is fixedly arranged between the longitudinal plate and the side plate of the mounting box; a buckle plate is clamped to the upper end of the mounting box, an upper cover plate is slidably arranged at the upper ends of the two longitudinal plates, and a third spring is fixedly arranged between the upper cover plate and the buckle plate. According to the utility model, the size of the pre-charging resistor can be adjusted according to continuous variables by utilizing the characteristic that the spring is telescopic, and finally, the mounting device can be compatible with pre-charging resistors with different sizes.

Description

Technical Field

[0001] The utility model relates to the field of resistor fixing, in particular to a pre-charge resistor mounting device and a battery pack thereof. Background Art

[0002] The main functions of resistors in a circuit are shunting, current limiting, voltage dividing, and converting electrical energy into internal energy, so that the current passing through the electrical appliance does not exceed the rated value or the specified value required by the actual work, to ensure the normal operation of the circuit equipment.

[0003] At present, the pre-charge resistor has become one of the indispensable electrical components in the battery pack. When the battery pack needs to replace pre-charge resistors of different sizes, the existing mounting slots for pre-charge resistors often cannot be compatible with the sizes before and after the switch, resulting in the inability to replace.

[0004] Therefore, there is an urgent need to propose a new solution to solve the above problems. Summary of the Invention

[0005] The utility model provides a pre-charge resistor mounting device, which can solve the problem in the prior art that different-sized pre-charge resistors cannot be compatible.

[0006] The utility model provides a pre-charge resistor mounting device, including a square mounting box with an opening. Two longitudinal plates and two transverse plates are respectively arranged in the mounting box along the length direction and the width direction. The longitudinal plates and the transverse plates enclose a space for placing the pre-charge resistor.

[0007] The transverse plate is slidably connected to the side plate of the mounting box, and a first spring is fixedly arranged between the transverse plate and the end plate of the mounting box.

[0008] The longitudinal plate is slidably connected to the end plate of the mounting box, and a second spring is fixedly arranged between the longitudinal plate and the side plate of the mounting box.

[0009] A buckle plate is snap-connected to the upper end of the mounting box. An upper cover plate is slidably arranged on the upper ends of the two longitudinal plates, and a third spring is fixedly arranged between the upper cover plate and the buckle plate.

[0010] Furthermore, a plurality of heat dissipation holes are arranged on the bottom plate of the mounting box corresponding to the pre-charge resistor mounting position.

[0011] Furthermore, the buckle plate is arranged along the width direction of the mounting box. The buckle plate includes a buckle plate main body and a buckle of the buckle plate. A first convex block for snap-fitting with the buckle of the buckle plate is arranged on the outer surface of the side plate of the mounting box.

[0012] Further, first raised plates and second raised plates are respectively arranged at the upper and lower ends on both sides of a single transverse plate, a second opening is formed between the first raised plate and the second raised plate, and third raised plates adapted to the size of the second opening are arranged at both ends of a single longitudinal plate.

[0013] Further, a plurality of first slide rails are arranged in parallel along the longitudinal direction on the inner surface of the side plate of the mounting box, a notch for accommodating the first slide rail is arranged at the upper end of the second raised plate, an intermediate connecting column is fixedly arranged at the corresponding notch of the second raised plate, and a space for accommodating another first slide rail is formed between the first raised plate and the intermediate connecting column.

[0014] Further, a plurality of second slide rails arranged in parallel are arranged on the inner surface of the end plate of the mounting box, and second raised blocks which are in concave-convex fit with the second slide rails are arranged at the ends of the third raised plates.

[0015] Further, the ends of the second slide rails are connected through connection grooves arranged in the height direction.

[0016] Further, a plurality of limiting columns are arranged along the height direction on the inner surface of the side plate of the mounting box, and the ends of the first slide rails are fixedly arranged on the limiting columns.

[0017] Further, a first opening for placing an upper cover plate is formed at the upper end of the longitudinal plate.

[0018] The present utility model also provides a battery pack, including the pre-charge resistor mounting device described above.

[0019] Compared with the prior art, by utilizing the self-expandable and contractible characteristic of the spring, the size of the pre-charge resistor can be adjusted according to continuous variables, so that the mounting device can finally be compatible with pre-charge resistors of different sizes. The design that the longitudinal plate and the transverse plate can slide with the side wall of the mounting box is adopted to avoid deviation of the longitudinal plate and the transverse plate during movement. In addition, under the condition that the whole battery pack vibrates, the pre-charge resistor can still maintain a stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the pre-charge resistor mounting device of the present utility model;

[0021] Figure 2 is a schematic diagram of the structure of the mounting box of the present utility model;

[0022] Figure 3 is a schematic diagram of the structure of the pre-charge resistor mounting device of the present utility model after removing the mounting box;

[0023] Reference numerals: 1, mounting box; 11, side plate; 111, first raised block; 112, first slide rail; 113, limiting post; 12, end plate; 121, second slide rail; 122, connecting groove; 13, bottom plate; 131, heat dissipation hole; 2, longitudinal plate; 21, third raised plate; 211, second raised block; 22, first opening; 3, transverse plate; 31, first raised plate; 32, second raised plate; 321, notch; 33, second opening; 34, intermediate connecting post; 4, pre-charge resistor; 51, first spring; 52, second spring; 53, third spring; 61, buckle; 611, buckle body; 612, buckle catch; 62, upper cover plate. Detailed implementation manners

[0024] To further understand the content, features and effects of the present utility model, the following embodiments are given and are described in detail in conjunction with the attached Figures 1 to 3 as follows.

[0025] As Figures 1 to 3 shown, this embodiment provides a pre-charge resistor mounting device, which includes a square mounting box 1 with an opening. Two longitudinal plates 2 and two transverse plates 3 are respectively arranged in the mounting box 1 along the length direction and the width direction. The longitudinal plates 2 and the transverse plates 3 enclose a space for placing the pre-charge resistor 4;

[0026] The transverse plate 3 is slidably connected to the side plate 11 of the mounting box 1, and two first springs 51 are fixedly arranged between the transverse plate 3 and the end plate 12 of the mounting box 1 by welding;

[0027] The longitudinal plate 2 is slidably connected to the end plate 12 of the mounting box 1, and four second springs 52 are fixedly arranged between the longitudinal plate 2 and the side plate 11 of the mounting box 1 by welding;

[0028] A buckle 61 is clamped and arranged at the upper end of the mounting box 1. An upper cover plate 62 is slidably arranged at the upper ends of the two longitudinal plates 2. A single third spring 53 is fixedly arranged between the upper cover plate 62 and the buckle 61 by welding. The above three kinds of springs are always in a compressed state.

[0029] Compared with the prior art, the present utility model makes use of the self-expandable and contractible characteristics of the spring, so that the size of the pre-charge resistor can be adjusted according to continuous variables. Finally, the mounting device can be compatible with pre-charge resistors of different sizes. The design of the longitudinal plate and the transverse plate being slidable with the side wall of the mounting box is adopted to avoid the deviation of the longitudinal plate and the transverse plate during the movement. In addition, under the condition of the vibration of the entire battery pack, the pre-charge resistor can still maintain a stable state.

[0030] As Figure 2 shown, in this embodiment, five heat dissipation holes 131 are arranged at intervals on the bottom plate 13 of the mounting box 1 corresponding to the installation position of the pre-charge resistor 4, which is convenient for dissipating heat from the pre-charge resistor 4.

[0031] As Figure 1 and 3 shown, in this embodiment, the buckle plate 61 is arranged along the width direction of the mounting box 1, and it includes a buckle plate main body 611 and a buckle plate buckle 612. The buckle plate main body 611 is integrally U-shaped, and a first raised block 111 that is buckled and matched with the buckle plate buckle 612 is arranged on the outer surface of the side plate 11 of the mounting box 1. The setting of the buckling and matching facilitates subsequent disassembly and timely replacement of pre-charge resistors of different sizes.

[0032] As Figure 3 shown, in this embodiment, first raised plates 31 and second raised plates 32 are respectively arranged at the upper and lower ends on both sides of a single transverse plate 3. A second opening 33 is formed between the first raised plate 31 and the second raised plate 32. Third raised plates 21 that are adapted to the size of the second opening 33 are arranged at both ends of a single longitudinal plate 2. Through such a plug-in design, the transverse plates 3 can move relative to each other.

[0033] As Figure 3 shown, in this embodiment, eight first slide rails 112 are arranged in parallel along the longitudinal direction on the inner surface of the side plate 11 of the mounting box 1, and they are evenly arranged at the four corners of the mounting box 1. A notch 321 for accommodating the first slide rail 112 is arranged at the upper end of the second raised plate 32. An intermediate connecting column 34 is fixedly arranged by welding at the position corresponding to the notch 321 of the second raised plate 32. A space for accommodating another first slide rail 112 is formed between the first raised plate 31 and the intermediate connecting column 34. By arranging the first slide rails 112, the stability during the movement of the transverse plate 3 is ensured.

[0034] In this embodiment, multiple second slide rails 121 arranged in parallel are arranged on the inner surface of the end plate 12 of the mounting box 1. Second raised blocks 211 that are concavo-convexly matched with it are arranged at the ends of the third raised plates 21. By arranging the second slide rails 121 and the second raised blocks 211, the stability during the movement of the longitudinal plate 2 is ensured.

[0035] As Figure 2 shown, in this embodiment, the ends of the second slide rails 121 are connected through connection grooves 122 arranged along the height direction. By arranging the connection grooves 122, not only the effect of avoiding stress concentration is achieved, but also the movement of the third raised plate 21 is made more stable, and deviation during the movement is avoided.

[0036] In this embodiment, four limiting columns 113 are arranged along the height direction on the inner surface of the side plate 11 of the mounting box 1. The ends of the first slide rails 112 are fixedly arranged on the limiting columns 113 by welding. By arranging the limiting columns 113, a limiting effect is exerted on the transverse plate 2.

[0037] In this embodiment, a first opening 22 for placing the upper cover plate 62 is opened at the upper end of the longitudinal plate 2. The first opening 22 is provided to facilitate the arrangement of the upper cover plate 62.

[0038] The present invention also provides a battery pack, comprising the above-mentioned pre-charging resistor installation device.

[0039] When it is necessary to replace the pre-charging resistor 4 of different sizes, the buckle plate buckle 612 is pried apart to separate it from the first protruding block 111, the buckle plate 61 is removed, and then the third spring 53 and the upper cover plate 62 are removed in turn, the longitudinal plate 2 and the transverse plate 3 are pried apart outwards, the pre-charging resistor 4 to be replaced is removed, and a new pre-charging resistor 4 is inserted. At this time, under the compression force of the first spring 51 and the second spring 52, the longitudinal plate 2 and the transverse plate 3 move along the second slide rail 121 and the first slide rail 112 respectively, and finally the new pre-charging resistor 4 is relatively fixed in the space enclosed by the longitudinal plate 2 and the transverse plate 3.

[0040] The utility model described above in the present invention only expresses the implementation method of the utility model embodiment, and cannot be understood as limiting the scope of the utility model patent, nor is it any form of limitation on the structure of the utility model embodiment. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model embodiment, several changes and improvements can be made, which all belong to the protection scope of the utility model embodiment.

Claims

1. A pre-charging resistor installation device, characterized in that: It comprises a square installation box (1) with an opening, wherein two longitudinal plates (2) and two transverse plates (3) are respectively arranged in the installation box (1) along the length direction and the width direction, and the longitudinal plates (2) and the transverse plates (3) together form a space for placing a pre-charging resistor (4); The transverse plate (3) is slidably connected to the side plate (11) of the installation box (1), and a first spring (51) is fixedly arranged between the transverse plate (3) and the end plate (12) of the installation box (1); The longitudinal plate (2) is slidably connected to the end plate (12) of the installation box (1), and a second spring (52) is fixedly arranged between the longitudinal plate (2) and the side plate (11) of the installation box (1); A buckle plate (61) is clamped on the upper end of the installation box (1), an upper cover plate (62) is slidably provided on the upper ends of the two longitudinal plates (2), and a third spring (53) is fixedly provided between the upper cover plate (62) and the buckle plate (61); A plurality of heat dissipation holes (131) are provided on the bottom plate (13) of the installation box (1) corresponding to the installation position of the pre-charging resistor (4); The gusset plate (61) is arranged along the width direction of the installation box (1), the gusset plate (61) comprises a gusset plate body (611) and a gusset plate buckle (612), and the outer surface of the side plate (11) of the installation box (1) is provided with a first protruding block (111) which is buckled and matched with the gusset plate buckle (612); A first protruding plate (31) and a second protruding plate (32) are respectively provided at the upper and lower ends of both sides of the single transverse plate (3), a second opening (33) is formed between the first protruding plate (31) and the second protruding plate (32), and a third protruding plate (21) of a size matching the second opening (33) is provided at both ends of the single longitudinal plate (2).

2. A pre-charging resistor installation device according to claim 1, characterized in that: The inner surface of the side plate (11) of the installation box (1) is provided with a plurality of first slide rails (112) in parallel along the longitudinal direction, the upper end of the second protruding plate (32) is provided with a notch (321) for accommodating the first slide rail (112), and an intermediate connecting column (34) is fixedly provided at the position of the second protruding plate (32) corresponding to the notch (321), and a space for accommodating another first slide rail (112) is formed between the first protruding plate (31) and the intermediate connecting column (34).

3. A pre-charging resistor installation device according to claim 1, characterized in that: The inner surface of the end plate (12) of the installation box (1) is provided with a plurality of second slide rails (121) arranged in parallel, and the end of the third raised plate (21) is provided with a second raised block (211) which is concave-convexly matched with the second slide rail (121).

4. A pre-charging resistor installation device according to claim 3, characterized in that: The ends of the second slide rail (121) are connected via connection grooves (122) arranged along the height direction.

5. A pre-charging resistor installation device according to claim 2, characterized in that: A plurality of limiting columns (113) are arranged on the inner surface of the side plate (11) of the installation box (1) along the height direction, and the ends of the first slide rails (112) are fixedly arranged on the limiting columns (113).

6. A pre-charging resistor installation device according to claim 1, characterized in that: The upper end of the longitudinal plate (2) is provided with a first opening (22) for placing an upper cover plate (62).

7. A battery pack, characterized in that: It comprises a pre-charging resistor installation device as described in any one of claims 1 to 6.

Images