Battery box body structure

Abstract

The utility model relates to a battery box body structure which comprises a battery box body, a plastic end plate, a fuse, a first copper bar and a second copper bar, the plastic end plate is arranged on the end surface of one end of the battery box body; one end corner of the plastic end plate is provided with a first clamping position, and the first copper bar is fixed on the first clamping position through a first insulating column. A second clamping position is arranged at the other end corner of the plastic end plate, and the second clamping position and the first clamping position are arranged diagonally; the second copper bar is fixed on the second clamping position through a second insulating column; the plastic end plate is provided with a gap, and the fuse is fixed in the gap through the first copper bar and the second copper bar. The fuse is fixed on the plastic end plate through the first copper bar and the second copper bar, the heat dissipation effect is good, disassembly and assembly are convenient, maintenance is convenient, stability is good, economy, safety and practicability are achieved, and the requirements of actual use can be well met.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a battery box structure. Background Art

[0002] With the rapid development of new energy, the current consumption of various new energy products is increasing, and the performance requirements for these products are also becoming increasingly stringent. In the current market, most battery modules for energy storage, communications, and UPS systems are not equipped with fuses. Although the battery module may function normally after a short circuit, it is impossible to verify whether the internal components of the battery cell and the main control BMS are damaged, posing a certain safety risk. Although some battery modules have internal fuses, disassembly and maintenance are cumbersome and costly. After use, the fuse reaches a very high temperature, making it difficult to quickly reduce it through natural cooling, which limits its secondary use. Furthermore, high-current fuses are relatively expensive, and after continuous high-current discharge, the product experiences a high temperature rise, which can radiate and spread to surrounding structures and electronic components, thereby affecting the lifespan of other electronic components. Utility Model Content

[0003] The purpose of the utility model is to provide a battery box structure to solve technical problems such as safety risks after a short circuit occurs in the existing battery module, slow cooling speed of the fuse after use making it difficult to use it again, increased temperature affecting surrounding structures and electronic components, and troublesome disassembly and maintenance.

[0004] To achieve the above-mentioned purpose, the embodiment of the present invention provides a battery box structure, comprising a battery box, a plastic end plate, a fuse, a first copper bar and a second copper bar; the plastic end plate is arranged on the end surface of one end of the battery box;

[0005] A first clamping position is provided at one end corner of the plastic end plate, and the first copper bar is fixed to the first clamping position through a first insulating column; a second clamping position is provided at the other end corner of the plastic end plate, and the second clamping position is arranged diagonally with the first clamping position; the second copper bar is fixed to the second clamping position through a second insulating column; a notch is provided on the plastic end plate, and the fuse is fixed in the notch through the first copper bar and the second copper bar.

[0006] As a preferred embodiment, the notch is arranged at the center of a line connecting the first latching position and the second latching position, and the notch passes through the plastic end plate.

[0007] As a preferred embodiment, one end of the fuse is connected to the first copper bar, and the other end is connected to the second copper bar; the notch is adapted to fit the fuse, and a first gap is provided between the fuse and the notch.

[0008] As a preferred embodiment, the first copper busbar includes a first connecting portion, a parallel portion, and a second connecting portion that are integrally arranged; the first connecting portion is vertically arranged on one side of the parallel portion, the second connecting portion is vertically arranged on one end of the parallel portion, and the first connecting portion and the second connecting portion are vertically arranged.

[0009] As a preferred embodiment, the first connecting portion and the second connecting portion are both extended horizontally toward the battery case; the first connecting portion is respectively connected to the plastic end plate and the battery module in the battery case, the parallel portion is fixed to the plastic end plate, and the second connecting portion is connected to the fuse.

[0010] As a preferred embodiment, the parallel portion is arranged in an "L" shape; the connection between the first connecting portion and the parallel portion, and the connection between the second connecting portion and the parallel portion are both provided with an arc.

[0011] As a preferred embodiment, the second copper busbar includes a horizontal portion, an arc portion and a vertical portion; one side of the arc portion is connected to one side of the vertical portion, and the other side of the arc portion is connected to one end of the horizontal portion; the vertical portion is connected to the fuse, and the horizontal portion is connected to the external terminal.

[0012] As a preferred embodiment, the vertical portion and the horizontal portion are arranged perpendicularly; the vertical portion is arranged in an "L" shape; and the horizontal portion is arranged in a plate shape.

[0013] As a preferred embodiment, a third clamping position is provided at another end corner of the plastic end plate, and the third clamping position and the first clamping position are both provided close to the same long side of the plastic end plate; a third copper bar is provided on the third clamping position, and the third copper bar is fixed to the third clamping position through a third insulating column.

[0014] As a preferred embodiment, the first copper bar and the second copper bar are both positive copper bars, and the third copper bar is a negative copper bar; the first connecting portion is connected to the positive electrode of the battery module, and the third copper bar is connected to the negative electrode of the battery module.

[0015] As a preferred embodiment, a cooling fan is further provided on the plastic end plate, and the cooling fan is arranged diagonally to the third copper busbar.

[0016] As a preferred embodiment, the plastic end plate is fixed to the end surface of the battery box by a plurality of insulating bolts; and the plurality of insulating bolts are evenly arranged on the edge of the plastic end plate.

[0017] As a preferred embodiment, the battery box includes a cover plate, a box body and a panel, the cover plate covers the top of the box body; the plastic end plate is arranged at one end of the box body close to the panel, the panel covers the side of the plastic end plate away from the battery module, and the panel is fixedly connected to the plastic end plate; a second gap is provided between the plastic end plate and the cover plate; a third gap is provided between the plastic end plate and the panel.

[0018] The technical solution proposed in the present invention has the following beneficial effects: the present application fixes the fuse on the plastic end plate through the first copper bar and the second copper bar, and the plastic end plate is arranged at one end of the box body, which effectively solves the insulation problem of the fuse connection while facilitating the disassembly and maintenance of the fuse. The present application separates the fuse from the fixed structure and adopts a separate fixing method, which can effectively increase the electrical gap and heat dissipation space of the fuse, so that the heat emitted by the fuse during use can be quickly dissipated, effectively reducing the temperature of the fuse, and then reducing the heat radiation of the fuse temperature rise to the surrounding components, effectively extending the service life of the components, and at the same time can effectively increase the secondary use frequency of the fuse and effectively reduce costs. The present invention has a simple structure, good heat dissipation effect, easy disassembly and assembly, easy maintenance, good stability, economy, safety and practicality, and can well meet the needs of actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a battery box structure according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the internal structure of the battery box structure;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure of the plastic end plate;

[0022] Figure 4 for Figure 2 Schematic diagram of the connection structure of the fuse, the first copper bar and the second copper bar. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] like Figures 1 to 4 As shown, the embodiment of the present invention provides a battery box structure, including a battery box 10, a plastic end plate 20, a fuse 30, a first copper bar 40 and a second copper bar 50; the plastic end plate 20 is arranged on the end surface of one end of the battery box 10;

[0029] A first latch 21 is provided at one end corner of the plastic end plate 20, and the first copper bar 40 is fixed to the first latch 21 through a first insulating column A; a second latch 22 is provided at the other end corner of the plastic end plate 20, and the second latch 22 is arranged diagonally to the first latch 21; the second copper bar 50 is fixed to the second latch 22 through a second insulating column B; a notch 23 is provided on the plastic end plate 20, and the fuse 30 is fixed in the notch 23 through the first copper bar 40 and the second copper bar 50.

[0030] The fuse 30 is fixed to the plastic end plate 20 via the first copper bar 40 and the second copper bar 50, and the plastic end plate 20 is arranged at one end of the box 10. This effectively solves the insulation problem of the fuse connection while facilitating the disassembly, assembly, and maintenance of the fuse. In this way, the fuse can be separated from the fixed structure and fixed using a separate fixing method, which can effectively increase the electrical clearance and heat dissipation space of the fuse, allowing the heat generated by the fuse during use to be dissipated quickly, effectively reducing the temperature of the fuse, thereby reducing the heat radiation caused by the fuse temperature rise to surrounding components, effectively extending the service life of the components, and effectively increasing the secondary use frequency of the fuse, effectively reducing costs.

[0031] As a preferred embodiment, the notch 23 is provided at the center of the line connecting the first latching position 21 and the second latching position 22, and the notch 23 is provided through the plastic end plate 20. This arrangement eliminates the need for other auxiliary fixing plate components (such as screws), and the fuse can be fixed by the first copper bar and the second copper bar.

[0032] As a preferred embodiment, one end of the fuse 30 is connected to the first copper busbar 40, and the other end is connected to the second copper busbar 50. The notch 23 is adapted to fit the fuse 30, and a first gap (not marked in the figure) is provided between the fuse 30 and the notch 23. This effectively improves the heat dissipation effect of the fuse while providing sufficient space for component installation, effectively saving space in the box and reducing the volume of the box.

[0033] As a preferred embodiment, the first copper busbar 40 includes an integrally formed first connecting portion 41, a parallel portion 42, and a second connecting portion 43. The first connecting portion 41 is perpendicularly disposed to one side of the parallel portion 42, and the second connecting portion 43 is perpendicularly disposed to one end of the parallel portion 42. The first connecting portion 41 and the second connecting portion 43 are arranged perpendicularly. This arrangement effectively secures the fuse while ensuring heat dissipation, and provides sufficient space for component installation while effectively saving space in the box.

[0034] As a preferred embodiment, the first connecting portion 41 and the second connecting portion 43 both extend horizontally toward the battery case 10; the first connecting portion 41 is respectively connected to the plastic end plate 20 and the battery module (not labeled in the figure) within the battery case 10, the parallel portion 42 is fixed to the plastic end plate 20, and the second connecting portion 43 is connected to the fuse 30. This arrangement can most effectively shorten the connection distance and increase the contact area of ​​the connection, thereby effectively reducing the risk of contact heating.

[0035] As a preferred embodiment, the parallel portion 42 is arranged in an L-shaped configuration; the connection between the first connecting portion 41 and the parallel portion 42 and the connection between the second connecting portion 43 and the parallel portion 42 are both provided with an arc.

[0036] As a preferred embodiment, the second copper busbar 50 includes a horizontal portion 51, an arc portion 52, and a vertical portion 53. One side of the arc portion 52 is connected to one side of the vertical portion 53, and the other side of the arc portion 52 is connected to one end of the horizontal portion 51. The vertical portion 53 is connected to the fuse 30, and the horizontal portion 51 is connected to an external terminal (not labeled in the figure). This arrangement effectively secures the fuse while effectively shortening the connection distance and increasing the contact area, thereby effectively reducing the risk of contact heating.

[0037] As a preferred embodiment, the vertical portion 53 and the horizontal portion 51 are arranged perpendicularly; the vertical portion 53 is arranged in an "L" shape; and the horizontal portion 51 is arranged in a plate shape.

[0038] As a preferred embodiment, a third latch 24 is provided at another corner of the plastic end plate 20. The third latch 24 and the first latch 21 are both located near the same long side of the plastic end plate 20. A third copper busbar 60 is provided on the third latch 24 and secured to the third latch 24 via a third insulating post 61. This arrangement separates the copper busbar from the BMU module, increasing the electrical clearance between the busbars. This ensures efficient heat dissipation while enabling a rational layout of various components, effectively saving space, reducing the volume of the battery case, and effectively increasing the energy density of the battery case.

[0039] As a preferred embodiment, the first copper bar 40 and the second copper bar 50 are both positive copper bars, and the third copper bar 60 is a negative copper bar; the first connecting portion 41 is connected to the positive electrode of the battery module, and the third copper bar 60 is connected to the negative electrode of the battery module.

[0040] As a preferred embodiment, a cooling fan 70 is further provided on the plastic end plate 20, and is arranged diagonally with the third copper busbar 60. This arrangement ensures efficient heat dissipation while enabling a rational layout of the various components, thereby effectively saving space, reducing the volume of the battery case, and effectively increasing the energy density of the battery case.

[0041] As a preferred embodiment, the plastic end plate 20 is fixed to the end surface of the battery box 10 by a plurality of insulating bolts 25 ; the plurality of insulating bolts 25 are evenly arranged on the edge of the plastic end plate 20 .

[0042] As a preferred embodiment, the battery case 10 includes a cover plate 11, a case 12, and a panel 13. The cover plate 11 covers the top of the case 12. The plastic end plate 20 is disposed at one end of the case 12 near the panel 13. The panel 13 covers the side of the plastic end plate 20 away from the battery module, and the panel 13 is fixedly connected to the plastic end plate 20. A second gap is provided between the plastic end plate 20 and the cover plate 11, and a third gap is provided between the plastic end plate 20 and the panel 13. The second and third gaps effectively improve the heat dissipation effect of the fuse and provide sufficient space for component assembly and disassembly, facilitating maintenance of electronic components such as fuses and reducing maintenance costs.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery box structure, characterized in that: It includes a battery box, a plastic end plate, a fuse, a first copper bar and a second copper bar; the plastic end plate is arranged on the end surface of one end of the battery box; A first clamping position is provided at one end corner of the plastic end plate, and the first copper bar is fixed to the first clamping position through a first insulating column; a second clamping position is provided at the other end corner of the plastic end plate, and the second clamping position is arranged diagonally with the first clamping position; the second copper bar is fixed to the second clamping position through a second insulating column; a notch is provided on the plastic end plate, and the fuse is fixed in the notch through the first copper bar and the second copper bar.

2. The battery box structure according to claim 1, characterized in that: The notch is arranged at the center of a line connecting the first locking position and the second locking position, and the notch passes through the plastic end plate.

3. The battery box structure according to claim 1, characterized in that: One end of the fuse is connected to the first copper bar, and the other end is connected to the second copper bar; the notch is adapted to match the fuse, and a first gap is provided between the fuse and the notch.

4. The battery box structure according to claim 1, characterized in that: The first copper busbar includes a first connecting portion, a parallel portion, and a second connecting portion that are integrally arranged; the first connecting portion is vertically arranged on one side of the parallel portion, the second connecting portion is vertically arranged on one end of the parallel portion, and the first connecting portion and the second connecting portion are vertically arranged.

5. The battery box structure according to claim 4, characterized in that: The first connecting portion and the second connecting portion are both extended horizontally toward the battery box; the first connecting portion is connected to the plastic end plate and the battery module in the battery box respectively, the parallel portion is fixed to the plastic end plate, and the second connecting portion is connected to the fuse.

6. The battery box structure according to claim 5, characterized in that: The parallel portion is arranged in an "L" shape; the connection between the first connecting portion and the parallel portion, and the connection between the second connecting portion and the parallel portion are both provided with an arc.

7. The battery box structure according to claim 1, characterized in that: The second copper busbar includes a horizontal portion, an arc portion, and a vertical portion; one side of the arc portion is connected to one side of the vertical portion, and the other side of the arc portion is connected to one end of the horizontal portion; the vertical portion is connected to the fuse, and the horizontal portion is connected to the external terminal; The vertical portion and the horizontal portion are arranged perpendicularly; the vertical portion is arranged in an "L" shape; and the horizontal portion is arranged in a plate shape.

8. The battery box structure according to claim 5, characterized in that: A third clamping position is provided at another end corner of the plastic end plate, and the third clamping position and the first clamping position are both provided close to the same long side of the plastic end plate; a third copper bar is provided on the third clamping position, and the third copper bar is fixed to the third clamping position through a third insulating column.

9. The battery box structure according to claim 8, characterized in that: The first copper bar and the second copper bar are both positive copper bars, and the third copper bar is a negative copper bar; the first connecting portion is connected to the positive electrode of the battery module, and the third copper bar is connected to the negative electrode of the battery module; A cooling fan is also provided on the plastic end plate, and the cooling fan is arranged diagonally to the third copper bar; The plastic end plate is fixed to the end surface of the battery box through a plurality of insulating bolts; and the plurality of insulating bolts are evenly arranged on the edge of the plastic end plate.

10. The battery box structure according to claim 5, characterized in that: The battery box includes a cover plate, a box body and a panel, the cover plate covers the top of the box body; the plastic end plate is arranged at one end of the box body close to the panel, the panel covers the side of the plastic end plate away from the battery module, and the panel is fixedly connected to the plastic end plate; a second gap is provided between the plastic end plate and the cover plate; a third gap is provided between the plastic end plate and the panel.

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