A lithium battery casing

Abstract

The present invention discloses a lithium battery casing, comprising an upper shell and a lower shell, wherein opposite sides of the upper shell and the lower shell are respectively provided with accommodating grooves for accommodating lithium battery cells. A first clip is provided at the edge of the upper shell, and a second clip for engaging with the first clip is provided at a corresponding position of the edge of the lower shell. The upper shell and the lower shell are fixed by the mutual engagement of the first clip and the second clip. The present invention provides a lithium battery casing, wherein a first clip is provided at the edge of the upper shell and a second clip is provided at the edge of the lower shell, and the upper shell and the lower shell are fixed by the mutual engagement of the first clip and the second clip, which can effectively limit the vertical displacement of the battery cell inside the casing, reduce the risk of misalignment and falling off of the upper and lower shells, and improve the product's mechanical stability.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery shell. Background Art

[0002] As an energy battery with high reaction efficiency, strong safety and small size, lithium batteries are increasingly widely used, especially in the fields of electric vehicles, electric boats, etc. Generally, lithium batteries need to be installed in lithium battery shells when used. The lithium battery shell is usually composed of a shell wall and a shell cover. The shell wall and the shell cover together form an installation space for the lithium battery. After the lithium battery is placed in the above installation space, the shell wall and the shell cover are locked and fixed by screws. Since the shell wall and the shell cover are usually just a thin layer of steel or aluminum shell, the above fixing method easily causes large deformation of the entire module in the vertical direction and poor impact resistance, resulting in insufficient operational stability of the entire system; at the same time, during transportation or long-term use, the shell wall and the shell cover are prone to misalignment and falling off, affecting the product's scientific stability. Summary of the invention

[0003] In view of the technical problems raised in the background technology, the object of the present invention is to provide a lithium battery casing with reliable connection, strong impact resistance and good stability.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A lithium battery housing comprises an upper shell and a lower shell, wherein opposite sides of the upper shell and the lower shell are respectively provided with a receiving groove for receiving a lithium battery cell. A first fastener is provided at the edge of the upper shell, and a second fastener for fastening with the first fastener is provided at a corresponding position of the edge of the lower shell. The upper shell and the lower shell are fixed by the mutual fastening of the first fastener and the second fastener.

[0006] In one embodiment, the first snap fastener includes a plurality of snap-in protrusions arranged along the edge of the upper shell, and the second snap fastener includes a plurality of snap-in holes arranged along the edge of the lower shell, and the upper shell and the lower shell are fixed by snapping together the snap-in protrusions and the snap-in holes.

[0007] In another embodiment, the first snap fastener includes a plurality of snap holes arranged along the edge of the upper shell, and the second snap fastener includes a plurality of snap protrusions arranged along the edge of the lower shell, and the upper shell and the lower shell are fixed by snapping together the snap protrusions and the snap holes.

[0008] In another embodiment, the first fastener includes a plurality of first fastening protrusions and a plurality of first fastening holes arranged along the edge of the upper shell, and the second fastening component includes a plurality of second fastening protrusions and a plurality of second fastening holes arranged along the edge of the lower shell, and the first fastening protrusions and the second fastening protrusions are respectively fastened and fixed to the second fastening holes and the first fastening holes.

[0009] Preferably, the first clamping protrusions and the first clamping holes are arranged alternately in sequence, and the second clamping holes and the second clamping protrusions are arranged alternately in sequence.

[0010] Furthermore, in order to improve the overall structural strength of the upper shell / lower shell, the outer surfaces of the upper shell and the lower shell are respectively provided with reinforcing ribs.

[0011] Preferably, the reinforcing ribs include a plurality of transverse reinforcing ribs arranged along the length direction of the shell and a plurality of longitudinal reinforcing ribs arranged along the width direction of the shell, and the transverse reinforcing ribs and the longitudinal reinforcing ribs are arranged in an alternating manner.

[0012] Furthermore, the outer shapes of the upper shell and the lower shell are both rectangular, the two side edges and the rear edge of the upper shell are respectively provided with first fasteners, and the two side edges and the rear edge of the lower shell are respectively provided with second fasteners.

[0013] Furthermore, the front edge of the upper shell is bent upward to form a first bending plate, and the front edge of the lower shell is bent downward to form a second bending plate, and an installation opening groove for installing the battery ear bracket and the battery bus is formed between the first bending plate and the second bending plate.

[0014] Furthermore, a plurality of first protrusions are provided on the upper surface of the rear side of the lower shell, and a plurality of second protrusions are provided on the bottom of the upper shell at positions opposite to the first protrusions, the upper surfaces of the first protrusions and the lower surfaces of the second protrusions are fitted together, and rivet holes are respectively opened at positions opposite to the first protrusions and the second protrusions.

[0015] The present invention has the following beneficial effects:

[0016] 1. The buckle structure is set on both sides and the back of the shell, which can effectively limit the vertical displacement of the internal battery cell, reduce the risk of misalignment and falling off of the upper and lower shells, and improve the product's mechanical stability;

[0017] 2. Reinforcement ribs are set on the outer surfaces of the upper and lower shells to increase the overall structural strength of the module, reduce the deformation of the module in the vertical direction, improve the seismic and shock resistance, and improve the system operation stability;

[0018] 3. A first protrusion is set on the top of the lower shell, and a second protrusion is set on the bottom of the upper shell. The first protrusion and the second protrusion are attached to each other and are respectively provided with rivet holes to facilitate riveting and fastening of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the lithium battery housing of Example 1.

[0020] Figure 2 for Figure 1 Exploded view of parts.

[0021] Figure 3 for Figure 1 A partial enlarged schematic diagram of part A.

[0022] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the lithium battery housing of the first embodiment from another angle.

[0023] Figure 5 for Figure 4 A partial enlarged schematic diagram of part B.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the lithium battery housing of the second embodiment.

[0025] Figure 7 for Figure 6 A partial enlarged schematic diagram of part C in the middle.

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the lithium battery housing of Example 3.

[0027] Fig. 9 for Figure 8 A partial enlarged schematic diagram of part D in the middle.

[0028] Explanation of the main component symbols: 10, accommodating groove; 100, reinforcing rib; 1001, transverse reinforcing rib; 1002, longitudinal reinforcing rib; 101, first latching protrusion; 102, first latching hole; 103, second latching protrusion; 104, second latching hole; 105, installation opening groove; 106, rivet hole; 107, latching protrusion; 108, latching hole; 11, upper shell; 111, first bending plate; 112, second protrusion; 12, lower shell; 121, second bending plate; 122, first protrusion. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Embodiment 1

[0031] like Figure 1-5As shown, a lithium battery housing includes an upper shell 11 and a lower shell 12, and the upper shell 11 and the lower shell 12 are respectively provided with a receiving groove 10 for receiving a lithium battery cell on opposite sides. A first fastener is provided at the edge of the upper shell 11, and a second fastener for fastening with the first fastener is provided at a corresponding position of the edge of the lower shell 12. The upper shell 11 and the lower shell 12 are fixed by the mutual fastening of the first fastener and the second fastener.

[0032] In this embodiment, the first clamping member includes a plurality of first clamping protrusions 101 and a plurality of first clamping holes 102 arranged along the edge of the upper shell 11, and the second clamping member includes a plurality of second clamping protrusions 103 and a plurality of second clamping holes 104 arranged along the edge of the lower shell, and the first clamping protrusions 101 and the second clamping protrusions 103 are respectively clamped and fixed with the second clamping holes 104 and the first clamping holes 102. Preferably, in order to further improve the connection reliability between the upper shell 11 and the lower shell, the first clamping protrusions 101 and the first clamping holes 102 are arranged alternately in sequence, and the second clamping holes 104 and the second clamping protrusions 103 are arranged alternately in sequence.

[0033] The outer surfaces of the upper shell 11 and the lower shell 12 are respectively provided with reinforcing ribs 100. Preferably, the reinforcing ribs 100 include a plurality of transverse reinforcing ribs 1001 arranged along the length direction of the shell and a plurality of longitudinal reinforcing ribs 1002 arranged along the width direction of the shell, and the transverse reinforcing ribs 1001 and the longitudinal reinforcing ribs 1002 are arranged alternately.

[0034] The upper shell 11 and the lower shell 12 are both rectangular in shape, and first fasteners are respectively provided on the two side edges and the rear side edge of the upper shell 11, and second fasteners are respectively provided on the two side edges and the rear side edge of the lower shell 12. The front side edge of the upper shell 11 is bent upward to form a first bending plate 111, and the front side edge of the lower shell 12 is bent downward to form a second bending plate 121. An installation opening groove 105 for installing a battery tab bracket and a battery bus is formed between the first bending plate 111 and the second bending plate 121.

[0035] A plurality of first protrusions 122 are provided on the upper rear surface of the lower shell 12, and a plurality of second protrusions 112 are provided on the bottom of the upper shell 11 at positions opposite to the first protrusions 122. The upper surfaces of the first protrusions 122 and the lower surfaces of the second protrusions 112 are fitted together, and rivet holes 106 are respectively opened at positions opposite to the first protrusions 122 and the second protrusions 112.

[0036] The buckle structure is provided on both sides and the back of the shell of this embodiment, which can effectively limit the vertical displacement of the internal battery cell, reduce the risk of misalignment and falling of the upper and lower shells, and improve the product's mechanical stability. The outer surface of the upper shell 11 / lower shell 12 is respectively provided with reinforcing ribs 100 to increase the overall structural strength of the module, reduce the deformation of the module in the vertical direction, enhance the ability to resist earthquakes and shocks, and improve the operational stability of the system.

[0037] Embodiment 2

[0038] like Figure 6 , Figure 7 As shown, the difference between this embodiment and the first embodiment is that the first fastener includes a plurality of fastening protrusions 107 arranged along the edge of the upper shell 11, the second fastener includes a plurality of fastening holes 108 arranged along the edge of the lower shell, and the upper shell 11 and the lower shell 12 are fixed by the fastening cooperation between the fastening protrusions 107 and the fastening holes 108. The rest of the structure and principle of this embodiment are the same as those of the first embodiment.

[0039] Embodiment 3

[0040] like Figure 8 , Fig. 9 As shown, the difference between this embodiment and the first embodiment is that the first buckle comprises a plurality of buckle holes 108 arranged along the edge of the upper shell 11, the second buckle comprises a plurality of buckle protrusions 107 arranged along the edge of the lower shell 12, and the upper shell 11 and the lower shell 12 are fixed by the buckle engagement of the buckle protrusions 107 and the buckle holes 108. The rest of the structure and principle of this embodiment are the same as those of the first embodiment.

[0041] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A lithium battery housing, characterized in that: The battery pack comprises an upper shell and a lower shell, wherein the opposite sides of the upper shell and the lower shell are respectively provided with a receiving groove for receiving a lithium battery cell, a first clip is arranged at an edge of the upper shell, and a second clip for engaging with the first clip is arranged at a corresponding position of the edge of the lower shell, and the upper shell and the lower shell are fixed by engaging the first clip and the second clip with each other; the front side edge of the upper shell is bent upward to form a first bending plate, and the front side edge of the lower shell is bent downward to form a second bending plate, and a first bending plate and a second bending plate are formed between the first bending plate and the second bending plate. An installation opening groove for installing a battery ear bracket and a battery bus; the outer surfaces of the upper shell and the lower shell are respectively provided with reinforcing ribs; the two side edges and the rear side edge of the upper shell are respectively provided with first clips, and the two side edges and the rear side edge of the lower shell are respectively provided with second clips; a plurality of first protrusions are provided on the upper surface of the rear side of the lower shell, and a plurality of second protrusions are provided on the bottom of the upper shell at positions opposite to the first protrusions, the upper surface of the first protrusion is in contact with the lower surface of the second protrusion, and rivet holes are respectively opened at positions opposite to the first protrusion and the second protrusion.

2. A lithium battery casing as claimed in claim 1, characterized in that: The first snap fastener comprises a plurality of snap protrusions arranged along the edge of the upper shell, and the second snap fastener comprises a plurality of snap holes arranged along the edge of the lower shell. The upper shell and the lower shell are fixed by snapping together the snap protrusions and the snap holes.

3. A lithium battery casing as claimed in claim 1, characterized in that: The first snap fastener comprises a plurality of snap holes arranged along the edge of the upper shell, the second snap fastener comprises a plurality of snap protrusions arranged along the edge of the lower shell, and the upper shell and the lower shell are fixed by snapping the snap protrusions with the snap holes.

4. A lithium battery casing as claimed in claim 1, characterized in that: The first fastener includes a plurality of first fastening protrusions and a plurality of first fastening holes arranged along the edge of the upper shell, and the second fastening component includes a plurality of second fastening protrusions and a plurality of second fastening holes arranged along the edge of the lower shell, and the first fastening protrusions and the second fastening protrusions are respectively fastened and fixed to the second fastening holes and the first fastening holes.

5. A lithium battery casing as claimed in claim 4, characterized in that: The first clamping protrusions and the first clamping holes are arranged alternately in sequence, and the second clamping holes and the second clamping protrusions are arranged alternately in sequence.

6. A lithium battery casing as claimed in claim 1, characterized in that: The reinforcing ribs include a plurality of transverse reinforcing ribs arranged along the length direction of the shell and a plurality of longitudinal reinforcing ribs arranged along the width direction of the shell, and the transverse reinforcing ribs and the longitudinal reinforcing ribs are arranged in an interlaced manner.

7. A lithium battery casing as claimed in claim 1, characterized in that: The upper shell and the lower shell are both rectangular in shape.

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