CN110690383A

CN110690383A - Power battery box and electric forklift

Info

Publication number: CN110690383A
Application number: CN201911062361.8A
Authority: CN
Inventors: 申望屏; 王克田
Original assignee: Shenzhen Xiongtao Lithium Electricity Co Ltd
Current assignee: Shenzhen Xiongtao Lithium Electricity Co Ltd
Priority date: 2019-11-02
Filing date: 2019-11-02
Publication date: 2020-01-14

Abstract

The invention discloses a power battery box, which comprises a box body and a battery cell arranged in the box body, wherein the box body is provided with a plurality of battery cells; an access hole assembly is arranged on the side face of the box body, and comprises an access fixing plate arranged on the inner side of the box body and an access plate fixed on the access fixing plate through screws; a dead folding edge is arranged on the inner side of the maintenance fixing plate and comprises an arc-shaped head end and a tail end which vertically extends upwards from one end of the arc-shaped head end; the maintenance plate comprises a height stopping plate arranged horizontally, a first plate extending vertically upwards from one end of the height stopping plate, and a second plate extending vertically downwards from the other end of the height stopping plate; the inboard of second board is provided with the sealing strip, the sealing strip with the arc head end sets up relatively, first board with the tail end sets up relatively. The invention further provides the electric forklift. The sealing device has the advantages of good sealing effect, convenience in installation, stability and reliability.

Description

Power battery box and electric forklift

Technical Field

The invention relates to the field of batteries, in particular to a power battery box and an electric forklift.

Background

At present, global economy faces a huge energy crisis, and energy conservation, emission reduction and development of new energy capable of replacing fossil fuels are extremely urgent needs of human beings. In the face of the current domestic and even global increasingly strict exhaust emission standards and future energy crisis, various automobile manufacturers are researching and developing low-emission new energy technologies to adapt to the development trend, wherein pure electric vehicles are one of the fields researched and developed by various large automobile enterprises at present.

The forklift is used as special equipment and mainly used for goods loading and unloading, carrying, stacking, unstacking and the like, the continuous supply of materials in a production line is guaranteed, the labor intensity of workers is reduced, the efficiency of the enterprise in logistics carrying is effectively improved, and the carrying cost is reduced. For the convenience of maintenance of the forklift battery box, an overhaul window is usually designed on the side face of the box body, and the forklift battery box is convenient to detect or maintain when in fault. The inspection hole needs to be frequently disassembled for detection or maintenance, so the sealing reliability is very important, the sealing is not good, and potential safety hazards exist. The existing access opening structure generally has the following problems: the plane plate is adopted as the maintenance plate, so that the strength is poor and the deformation is easy; the sealing strip is easy to be compressed and deformed excessively, and the sealing property is easy to lose efficacy after being disassembled and assembled for many times; the countersunk head screw has insufficient pressing force.

Disclosure of Invention

Based on this, in order to solve the technical problem, the invention provides a power battery box. This power battery box's access hole structure has better leakproofness, can relapse the dismouting and do not influence the leakproofness of battery box.

On one hand, the invention provides a power battery box, which comprises a box body and a battery cell arranged in the box body; an access hole assembly is arranged on the side face of the box body, and comprises an access fixing plate arranged on the inner side of the box body and an access plate fixed on the access fixing plate through screws; a dead folding edge is arranged on the inner side of the maintenance fixing plate and comprises an arc-shaped head end and a tail end which vertically extends upwards from one end of the arc-shaped head end; the maintenance plate comprises a height stopping plate arranged horizontally, a first plate extending vertically upwards from one end of the height stopping plate, and a second plate extending vertically downwards from the other end of the height stopping plate; the inboard of second board is provided with the sealing strip, the sealing strip with the arc head end sets up relatively, first board with the tail end sets up relatively.

Further, the sealing strip with the arc head end sets up relatively, just the sealing strip with the arc head end contacts. The contact position is optimal at the middle position of the sealing strip.

The arc head end sets up with the sealing strip relatively, and the arc head end of being convenient for compresses tightly sealed with the sealing strip, and the arc head end can press the sealing strip into a line to improve sealed effect to reaching IP67 waterproof grade, avoid many times dismouting access panel to lead to the leakproofness inefficacy. And, the tail end of the dead limit of book sets up with the first board of access panel relatively, passes the tail end of first board and the dead limit of book at the screw and fixes the access panel on overhauing the fixed plate, can prevent effectively that the sealing strip from being compressed by the excessive compressive deformation of arc head end, and when the sealing strip was compressed 3 mm's minimum thickness, the tail end will stop the access panel to continue to descend with ending the high board to play the effect of ending the height.

In addition, from the vertical upwards extension of the one end of ending the high board sets up the first board and certainly the vertical downwardly extending of the other end of ending the high board sets up the second board, can guarantee that the access panel (including the screw) all does not bulge the side of box, sets up like this, does not influence the whole size of fork truck battery package.

Furthermore, the plane of the second plate is lower than the plane of the side face of the box body, or the plane of the second plate and the plane of the side face of the box body are the same plane; the side of the box body is the side where the access hole assembly is located.

Further, the plane of the screw is lower than the plane of the second plate, or the plane of the screw and the plane of the second plate are the same plane.

The access panel (including the screw) all does not bulge the side of box, sets up like this, does not influence the whole size of fork truck battery package.

Furthermore, a plurality of folding edges are arranged on the maintenance fixing plate. The maintenance fixing plate is provided with a plurality of folding edges, so that the strength of the maintenance fixing plate can be effectively increased.

Further, a plurality of the folding edges are arranged at intervals. By means of the arrangement, the strength of the maintenance fixing plate can be further increased.

Further, when the sealing strip is in a natural state, the thickness of the sealing strip is 5 mm; in the compressed state, the minimum thickness of the sealing strip is 3 mm. The width of the sealing strip is typically 20 mm.

Furthermore, the height of the dead edge is more than or equal to 7 mm.

Furthermore, the height of the height stopping plate is more than or equal to 7 mm.

Further, the edge of the first plate is provided with a first groove matched with the screw.

Furthermore, the edge of the tail end is provided with a second groove which is respectively matched with the screw and the first groove.

Further, the screw is a hexagon socket head cap screw. The maintenance plate is fixed by the hexagon socket head cap screws, so that the pressing force can be effectively improved, and the sealing property of the maintenance plate is improved.

On the other hand, the invention also provides an electric forklift which comprises the power battery box.

The arc-shaped head end and the sealing strip are arranged oppositely, so that the sealing strip is conveniently pressed and sealed by the arc-shaped head end, the sealing strip can be pressed into a line by the arc-shaped head end, the sealing effect is improved to reach the IP67 waterproof grade, and the sealing failure caused by repeated assembly and disassembly of the maintenance plate is avoided. And, the tail end of the dead limit of book sets up with the first board of access panel relatively, passes the tail end of first board and the dead limit of book at the screw and fixes the access panel on overhauing the fixed plate, can prevent effectively that the sealing strip from being compressed by the excessive compressive deformation of arc head end, and when the sealing strip was compressed 3 mm's minimum thickness, the tail end will stop the access panel to continue to descend with ending the high board to play the effect of ending the height.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a power battery box (with access panel) according to the present invention;

FIG. 2 is a schematic sectional view taken along line A-A of the access port assembly of the embodiment of FIG. 1;

FIG. 3 is a schematic structural view of the power cell box of FIG. 1 (without access panel);

fig. 4 is a partially enlarged view of a portion B of fig. 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, top and bottom … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The general access hole structure adopts plane panel as the access panel more, and intensity is poor, yielding, and the sealing strip is easy excessive compression deformation, leads to the leakproofness to become invalid after many dismouting easily, and countersunk screw's packing force is not high moreover. The sealing structure used at present influences the reliability of the sealing between the box body and the access panel, and potential safety hazards exist.

Therefore, in order to solve the technical problems, the invention provides the power battery box, the arc-shaped head end and the sealing strip are arranged oppositely, the arc-shaped head end can conveniently compress and seal the sealing strip, the arc-shaped head end can press the sealing strip into a line, the sealing effect is improved to reach the IP67 waterproof grade, and the sealing failure caused by repeated dismounting and mounting of the maintenance board is avoided. And, the tail end of the dead limit of book sets up with the first board of access panel relatively, passes the tail end of first board and the dead limit of book at the screw and fixes the access panel on overhauing the fixed plate, can prevent effectively that the sealing strip from being compressed by the excessive compressive deformation of arc head end, and when the sealing strip was compressed 3 mm's minimum thickness, the tail end will stop the access panel to continue to descend with ending the high board to play the effect of ending the height.

In one aspect, referring to fig. 1 and fig. 2 simultaneously, the present invention provides a power battery box, which includes a box body 10 and a battery cell (not identified in the drawings) disposed in the box body 10; an access hole assembly 20 is arranged on the side surface of the box body 10, and the access hole assembly 20 comprises an access fixing plate 21 arranged on the inner side of the box body 10 and an access plate 23 fixed on the access fixing plate 21 through a screw 22; a dead-folded edge 24 is arranged on the inner side of the maintenance fixing plate 21, and the dead-folded edge 24 comprises an arc-shaped head end 241 and a tail end 242 vertically extending upwards from one end of the arc-shaped head end 241; the maintenance plate 23 comprises a height stopping plate 231 arranged horizontally, a first plate 232 arranged by vertically extending upwards from one end of the height stopping plate 231, and a second plate 233 arranged by vertically extending downwards from the other end of the height stopping plate 231; the inside of second board 233 is provided with sealing strip 25, sealing strip 25 with arc head end 241 sets up relatively, first board 232 with tail end 242 sets up relatively.

Specifically, in this embodiment, the sealing strip 25 is disposed opposite to the arc-shaped head end 241, and the sealing strip 25 is in contact with the arc-shaped head end 241, where the contact position is optimal at the middle position of the sealing strip 25.

The structure of the power battery box (without the access panel) of the embodiment is schematically shown in fig. 3, and a partial enlarged view of the structure of the part B is shown in fig. 4. The service fixing plate 21 provided inside the case 10 is clearly seen from fig. 4.

Further, in this embodiment, the plane of the second plate 233 is lower than the plane of the side of the box 10, or the plane of the second plate 233 and the plane of the side of the box 10 are the same plane; the side of the box body 10 is the side where the access hole assembly 20 is located.

Specifically, in this embodiment, the plane of the screw 22 is lower than the plane of the second plate 233, or the plane of the screw 22 and the plane of the second plate 233 are the same plane.

Further, referring to fig. 2 again, the maintenance fixing plate 21 is provided with a plurality of folding edges 26. The maintenance fixing plate 21 is provided with a plurality of folding edges 26, so that the strength of the maintenance fixing plate can be effectively increased. Specifically, in the present embodiment, the maintenance fixing plate 21 is provided with three folded edges 26, and the three folded edges 26 form a triangular state, so that the strength of the maintenance fixing plate can be increased to the maximum.

It is understood that in other embodiments, two, four, or five folded edges 26 may be provided on the maintenance fixing plate 21 according to actual requirements, so as to effectively increase the strength of the maintenance fixing plate.

Further, in the present embodiment, a plurality of the folded edges 26 are provided at intervals. The folding edges 26 are arranged at intervals, so that the strength of the maintenance fixing plate can be further increased.

Further, in a natural state, the thickness of the sealing strip 25 is 5mm, and the width thereof is 20 mm; in the compressed state (i.e. compressed by the curved head end), the sealing strip 25 has a minimum thickness of 3 mm.

Further, the height of the dead folding edge 24 is more than or equal to 7 mm; specifically, in the present embodiment, the height of the dead-fold edge 24 is 7mm, and the thickness is 4.1 mm. The height of the dead-fold edge 24 is the vertical distance from the highest point of the curved head end 241 to the tail end 242.

Further, the height of the height-stopping plate 231 is more than or equal to 7 mm; specifically, in the present embodiment, the height of the height stop plate 231 is 7 mm. The height of the height-stopping plate 231 is the vertical distance between the first plate 232 and the second plate 233.

Specifically, in the present embodiment, the edge of the first plate 232 is provided with a first groove (not labeled in the figure) matched with the screw 22.

Further, the edge of the tail end 242 is provided with a second groove (not shown) respectively matching with the screw 22 and the first groove.

Further, in the present embodiment, the screw 22 is a socket head cap screw. The maintenance plate is fixed by the hexagon socket head cap screws, so that the pressing force can be effectively improved, and the sealing property of the maintenance plate is improved.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A power battery box comprises a box body and a battery cell arranged in the box body; the maintenance box is characterized in that an access hole assembly is arranged on the side face of the box body, and the access hole assembly comprises an access fixing plate arranged on the inner side of the box body and an access plate fixed on the access fixing plate through screws; a dead folding edge is arranged on the inner side of the maintenance fixing plate and comprises an arc-shaped head end and a tail end which vertically extends upwards from one end of the arc-shaped head end; the maintenance plate comprises a height stopping plate arranged horizontally, a first plate extending vertically upwards from one end of the height stopping plate, and a second plate extending vertically downwards from the other end of the height stopping plate; the inboard of second board is provided with the sealing strip, the sealing strip with the arc head end sets up relatively, first board with the tail end sets up relatively.

2. The power battery box of claim 1, wherein the plane of the second plate is lower than the plane of the side surface of the box body, or the plane of the second plate and the plane of the side surface of the box body are the same plane; the side of the box body is the side where the access hole assembly is located.

3. The power battery box of claim 2, wherein the plane of the screw is lower than the plane of the second plate, or the plane of the screw and the plane of the second plate are the same plane.

4. The power battery box of claim 1, wherein a plurality of folded edges are arranged on the maintenance fixing plate.

5. The power battery box of claim 4, wherein a plurality of the folds are spaced apart.

6. The power battery box of claim 1, wherein the sealing strip is 5mm thick in a natural state; in the compressed state, the minimum thickness of the sealing strip is 3 mm.

7. The power battery box of claim 1, wherein the height of the dead-fold edge is greater than or equal to 7 mm.

8. The power battery box of claim 7, wherein the height of the height stopping plate is greater than or equal to 7 mm.

9. The power battery box of claim 1, wherein the edge of the first plate is provided with a first groove matched with the screw; a second groove which is matched with the screw and the first groove is formed in the edge of the tail end; the screw is a hexagon socket head cap screw.

10. An electric forklift comprising the power battery box according to any one of claims 1 to 9.