Battery shell

Abstract

The utility model relates to the technical field of battery shells, in particular to a battery shell, which comprises a first shell, a second shell and a third shell, the cover body can cover the first mounting opening; one of the edges of the cover body and the first mounting opening is at least provided with a first tenon and a second tenon at an interval along the wall thickness direction of the side wall of the first shell, and the other edge of the cover body and the first mounting opening is at least provided with a first mortise matched with the first tenon and a second mortise matched with the second tenon at an interval; after the first tenon is matched with the first mortise and the second tenon is matched with the second mortise, the first shell and the cover body are buckled in a sealed manner to form a sealed cavity; according to the utility model, multiple sealing is realized, the glue sealing area is increased, redundant glue solution in the first mortise can be extruded into the second mortise, and a labyrinth type multiple sealing structure can be formed between the sealed shells after curing, so that the sealing reliability is improved, the glue solution can be prevented from overflowing to the outer side of the battery shell, the subsequent glue wiping difficulty is reduced, and the service life of the battery shell is prolonged. Meanwhile, the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery shells, in particular to a battery shell. Background Art

[0002] At present, there are two main ways to seal the battery cover in the battery industry: glue sealing and heat sealing. Heat sealing is to use a heated metal hot plate to melt the joint surface of the cover, and then press the hot melt surface together through external pressure. After the hot melt surface cools down, it adheres tightly together to achieve a sealing effect; glue sealing is usually a relatively simple sealing method that uses sealant on the joint surface of the cover and seals it through the curing of the glue liquid.

[0003] To ensure the sealing effect, the common glue sealing structure includes two parts: glue groove and tenon. When glue sealing, pour an appropriate amount of glue into the glue groove to form a seal at the joint surface of the cover. The traditional glue sealing structure is a single tenon on the cover, which can only form a seal, and the sealing effect is not good. In addition, when glue sealing, the glue is easy to overflow the outer side of the shell, which reduces the difficulty of subsequent glue wiping.

[0004] Based on the shortcomings of the prior art, it is urgent to study a battery casing to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a battery shell. The utility model realizes multi-pass sealing to increase the glue sealing area, and the excess glue in the first tongue and groove will be squeezed into the second tongue and groove. After curing, a maze-like multiple sealing structure will be formed between the sealed shells, thereby increasing the reliability of the sealing.

[0006] The utility model provides a battery housing, comprising:

[0007] A first housing having an inner cavity and a first mounting opening communicating with the inner cavity;

[0008] A cover body capable of covering the first installation opening; one of the edges of the cover body and the first installation opening is provided with at least a first tenon and a second tenon at intervals along the thickness direction of the side wall of the first shell, and the other is provided with at least a first tenon groove matched with the first tenon and a second tenon groove matched with the second tenon at intervals;

[0009] After the first tenon is matched with the first tenon groove, and the second tenon is matched with the second tenon groove, the first shell body and the cover body are sealed and buckled together to form a sealed cavity.

[0010] Furthermore, a plurality of reinforcing ribs are arranged at intervals on at least one of the first tenon and the second tenon.

[0011] Further, the reinforcing ribs provided on the side surface of the first tenon and / or the side surface of the second tenon are arranged along the height direction of the first tenon.

[0012] Furthermore, at least two tenon grooves with different groove depths are provided on the cover body or the first shell body.

[0013] Furthermore, the groove depth of the first tenon groove is greater than the groove depth of the second tenon groove, and the distance between the groove bottom of the first tenon groove and the groove bottom of the second tenon groove is 0.5-1 mm.

[0014] Furthermore, the second tenon is adapted to the shape of the second tenon groove, and the shape of the first tenon groove is the same as the shape of the second tenon groove.

[0015] Furthermore, the side surface of the first tenon disposed toward the second tenon is an inclined surface; and the width of the first tenon gradually increases from the bottom to the top of the first tenon groove.

[0016] Furthermore, there is a gap between the first tenon and the first tenon groove, and there is a gap between the second tenon and the second tenon groove, and the gaps are capable of accommodating sealant.

[0017] Furthermore, the cover body is a plate-shaped structure.

[0018] Further, the cover body is a second shell having an inner cavity, the second shell has a second installation opening, and the first installation opening and the second installation opening can be buckled with each other.

[0019] Furthermore, along the thickness direction of the side wall of the cover body, the second installation opening is provided with a third abutting surface, the first tenon, the second tenon and a fourth abutting surface in sequence;

[0020] Along the thickness direction of the side wall of the first shell, the first installation opening is provided with a first abutting surface, the first tongue and tongue groove, the second tongue and tongue groove, and a second abutting surface in sequence;

[0021] When the first tenon cooperates with the first tenon groove and the second tenon cooperates with the second tenon groove, the first abutting surface abuts with the third abutting surface to form a first abutting position, and the second abutting surface abuts with the fourth abutting surface to form a second abutting position.

[0022] Implementing the embodiments of the utility model has the following beneficial effects:

[0023] The utility model realizes multi-pass sealing to increase the glue sealing area by at least arranging a first tenon and a second tenon, and arranging a first tenon groove matched with the first tenon and a second tenon groove matched with the second tenon, and the excess glue in the first tenon groove will be squeezed into the second tenon groove, and a maze-like multiple sealing structure will be formed between the sealed shells after curing, thereby increasing the reliability of the seal and preventing the glue from overflowing to the outside of the battery shell, reducing the difficulty of subsequent glue wiping and reducing the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a partial cross-sectional view of the battery casing described in this embodiment.

[0026] Among them, the reference numerals in the figure correspond to:

[0027] 1-cover body; 2-first shell body; 3-sealant; 4-first abutting position; 5-second abutting position; 11-first tenon; 12-second tenon; 21-first tenon groove; 22-second tenon groove; 111-inclined surface. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In view of the defects of the prior art, the utility model realizes multi-pass sealing to increase the glue sealing area by providing at least a first tenon and a second tenon, and providing a first tenon groove matching with the first tenon and a second tenon groove matching with the second tenon, and the excess glue in the first tenon groove will be squeezed into the second tenon groove. After curing, a maze-like multiple sealing structure will be formed between the sealed shells, which increases the reliability of the seal and can prevent the glue from overflowing to the outside of the battery shell, reducing the difficulty of subsequent glue wiping and reducing the difficulty of operation.

[0031] See attached Figure 1 The present embodiment provides a battery shell, comprising: a first shell 2 having an inner cavity and a first mounting opening communicating with the inner cavity; a cover body 1 capable of covering the first mounting opening; one of the edges of the cover body 1 and the first mounting opening is provided with at least a first tenon 11 and a second tenon 12 at intervals along the thickness direction of the side wall of the first shell 2, and the other is provided with at least a first tenon groove 21 cooperating with the first tenon 11 and a second tenon groove 22 cooperating with the second tenon 12 at intervals; after the first tenon 11 is matched with the first tenon groove 21, and the second tenon 12 is matched with the second tenon groove 22, the first shell 2 and the cover body 1 are sealed and buckled together to form a sealed cavity.

[0032] It should be noted that: in this embodiment, by providing at least a first tenon 11 and a second tenon 12, and providing a first tenon groove 21 that cooperates with the first tenon 11 and a second tenon groove 22 that cooperates with the second tenon 12, multiple sealing is achieved to increase the glue sealing area, and the excess glue in the first tenon groove 21 will be squeezed into the second tenon groove 22. After curing, a maze-like multiple sealing structure will be formed between the sealed shells, which increases the reliability of the seal and can prevent the glue from overflowing to the outside of the battery shell, reducing the difficulty of subsequent glue wiping and reducing the difficulty of operation.

[0033] In the embodiment of the present application, the number of tenons and the number of tenons grooves are not limited and are set specifically according to the sealing conditions.

[0034] Preferably, the number of the tenons is two, and the number of the tenons matching the tenons is also two.

[0035] In some possible embodiments, a plurality of reinforcing ribs are arranged at intervals on at least one of the first tenon 11 and the second tenon 12. By arranging a plurality of reinforcing ribs on at least one of the first tenon 11 and the second tenon 12, the strength of the tenon can be improved, thereby extending the service life of the tenon; at the same time, when the tenon is sealed with glue, the contact area between the tenon and the glue is increased, thereby improving the sealing reliability.

[0036] Specifically, the location, quantity and size of the reinforcing ribs on the tenon are set according to actual conditions, as long as the reinforcing ribs increase the strength of the tenon and increase the contact area between the tenon and the glue.

[0037] Preferably, a plurality of reinforcing ribs are arranged at intervals on the surface of the first tenon 11 and / or the second tenon 12 .

[0038] Preferably, reinforcing ribs are only provided on the first tenon 11 , and no reinforcing ribs are provided on the second tenon 12 .

[0039] In some possible embodiments, the reinforcing ribs provided on the side of the first tenon 11 and / or the side of the second tenon 12 are arranged along the height direction of the first tenon 11, which can prevent the reinforcing ribs from blocking the movement of the glue in the tenon groove, and make the glue evenly distributed between the tenon groove and the tenon, thereby improving the reliability of the seal.

[0040] Preferably, the arrangement direction of the reinforcing ribs on the side of the tenon is consistent with the length direction of the tenon. Such an arrangement of the reinforcing ribs can prevent the reinforcing ribs from blocking the movement of the glue in the tenon groove, so that the glue is evenly distributed between the tenon groove and the tenon, thereby improving the reliability of the seal.

[0041] Furthermore, the bottom surface of the tenon is arranged opposite to the bottom of the mortise, and the reinforcing ribs on the bottom surface of the tenon are arranged along the thickness direction of the side wall, which can also prevent the reinforcing ribs from blocking the movement of the glue in the mortise, so that the glue is evenly distributed between the mortise and the tenon, thereby improving the reliability of the seal.

[0042] In some other possible embodiments, a plurality of reinforcing ribs are provided at least in one interval of the first mortise and tenon grooves 21 and the second mortise and tenon grooves 22. The provision of the reinforcing ribs can improve the strength of the mortise and tenon grooves, and increase the contact area between the mortise and tenon grooves and the glue, thereby improving the reliability of the seal.

[0043] Specifically, the location, quantity and size of the reinforcing ribs in the mortise and tenon are set according to actual conditions, as long as the reinforcing ribs increase the strength of the mortise and tenon and increase the contact area between the mortise and tenon and the glue.

[0044] Preferably, the reinforcing ribs on the side walls of the mortise and tenon groove are arranged along the groove depth direction.

[0045] In some possible embodiments, a plurality of reinforcing ribs are arranged at intervals on the first tenon 11 , and a plurality of reinforcing ribs are arranged at intervals in the second tenon groove 22 , so as to improve the sealing reliability.

[0046] In some possible embodiments, at least two mortises with different groove depths are provided on the cover body 1 or the first shell body 2. By providing mortises with different groove depths, the respective glue holding amounts can be changed to ensure that the tenon and the mortise are tightly connected.

[0047] In some possible embodiments, the groove depth of the first tenon groove 21 is greater than the groove depth of the second tenon groove 22, and the distance between the groove bottom of the first tenon groove 21 and the groove bottom of the second tenon groove 22 is 0.5-1mm. By setting the groove depth of the first tenon groove 21 to be greater than the groove depth of the second tenon groove 22, the glue holding capacity of the first tenon groove 21 is greater than the glue holding capacity of the second tenon groove 22. On the basis of ensuring that the glue fully connects the tenon and the tenon, the glue in the second tenon groove 22 is prevented from overflowing to the outside of the battery casing, thereby reducing the difficulty of subsequent glue wiping and reducing the difficulty of operation.

[0048] Specifically, the distance between the bottom of the first mortise and tenon groove 21 and the bottom of the second mortise and tenon groove 22 specifically refers to the height difference along the mortise and tenon groove depth direction.

[0049] In this embodiment, the distance between the bottom of the first tenon groove 21 and the bottom of the second tenon groove 22 is defined as a.

[0050] Preferably, the distance between the bottom of the first tenon groove 21 and the bottom of the second tenon groove 22 can be 0.5-0.6mm, 0.5-0.7mm, 0.5-0.8mm, 0.5-0.9mm, 0.5-1mm, 0.6-0.7mm, 0.6-1mm, 0.7-1mm, 0.8-1mm or 0.9-1mm, etc.

[0051] In some possible embodiments, the shapes of the second tenon 12 and the second tenon groove 22 are adapted to each other, and the shapes of the first tenon groove 21 and the second tenon groove 22 are the same. By adapting the shapes of the second tenon 12 and the second tenon groove 22, the contact area between the two and the glue can be maximized, thereby improving the sealing reliability.

[0052] In some possible embodiments, the first mortise and tenon grooves 21 and the second mortise and tenon grooves 22 are both square grooves. Setting them as square grooves can facilitate processing and ensure the accommodation volume of the mortise and tenon grooves, thereby increasing the contact area between the mortise and tenon glue and improving the sealing reliability. More importantly, it can ensure the strength of the first shell 2 and avoid the mortise and tenon grooves being set as special-shaped grooves, which may reduce the strength of the first shell 2.

[0053] In some other possible embodiments, the first tenon groove 21 and the second tenon groove 22 are cylindrical grooves, and the tenon is a cylindrical structure matched with the tenon grooves.

[0054] In some possible embodiments, the side surface of the first tenon 11 facing the second tenon 12 is a slope 111; the width of the first tenon 11 gradually increases from the bottom to the top of the first tenon groove 21. By setting the above-mentioned slope 111, the guiding effect of the glue in the tenon groove can be achieved, and at the same time, the contact area between the first tenon 11 and the glue is increased, and the volume of the first tenon groove 21 for the sealant 3 is increased, further preventing the glue from overflowing to the outside of the battery shell, avoiding reducing the difficulty of subsequent glue wiping, and reducing the difficulty of operation.

[0055] In some possible embodiments, there is a gap between the first tenon 11 and the first tenon groove 21, and there is a gap between the second tenon 12 and the second tenon groove 22. The gap can accommodate the sealant 3. By providing the sealant 3, the tenon and the tenon groove can be firmly connected, thereby improving the connection stability.

[0056] Specifically, the length of the tenon is not limited, as long as there is a gap between the tenon and the bottom of the mortise, and the glue can flow through the gap between the two.

[0057] In some possible embodiments, the gap between the tenon and the bottom of the mortise is much larger than the width of the tenon. Although this can also achieve a stable connection between the tenon and the mortise, it increases the amount of glue used and the preparation cost.

[0058] In some other possible embodiments, the gap between the tenon and the bottom of the mortise is similar to the gap between the side walls of the tenon and the side walls of the mortise, which can not only achieve a stable connection between the tenon and the mortise, but also avoid increasing the amount of glue used.

[0059] Specifically, the gap between the side wall of the tenon and the side wall of the tenon groove is less than 10% of the width of the tenon.

[0060] In some possible embodiments, the cover body 1 is a plate-like structure, so that the cover body 1 is easy to prepare and the preparation cost is reduced.

[0061] When the cover body 1 is a plate-shaped structure, the mortise and tenon are arranged on the cover body 1 .

[0062] In some possible embodiments, the cover body 1 is a second shell having an inner cavity, the second shell having a second mounting opening, the first mounting opening and the second mounting opening can be interlocked, and by setting the cover body 1 as a second shell having a second mounting opening, the volume of the sealed cavity formed after the cover body 1 is connected to the first shell 2 can be increased, thereby increasing the accommodation volume of the battery shell.

[0063] In some possible embodiments, the cover body 1 is provided with a first tenon 11 and a second tenon 12 , and the first shell body 2 is provided with a first tenon groove 21 and a second tenon groove 22 .

[0064] In some possible embodiments, the first installation opening and the second installation opening are matching circular openings, a plurality of first tenons 11 are spaced apart around the edge of the second installation opening, and a plurality of second tenons 12 are spaced apart around the edge of the second installation opening.

[0065] Specifically, a plurality of first tenons 21 matching the first tenons 11 are arranged at intervals around the edge of the first installation opening, and a plurality of second tenons 22 matching the second tenons 12 are arranged at intervals around the edge of the first installation opening.

[0066] In some other possible embodiments, the first installation opening and the second installation opening are matching square openings, first tenons 11 are spaced apart around the edge of the second installation opening, and a plurality of second tenons 12 are spaced apart around the edge of the second installation opening.

[0067] Specifically, each side edge of the first installation opening is provided with a plurality of first tenons 21 matching the first tenons 11 , and each side edge of the first installation opening is provided with a plurality of second tenons 22 matching the second tenons 12 .

[0068] In some possible embodiments, along the direction of the side wall thickness of the cover body 1, the second installation opening is sequentially provided with a third abutting surface, a first tenon 11, a second tenon 12 and a fourth abutting surface; along the direction of the side wall thickness of the first shell 2, the first installation opening is sequentially provided with a first abutting surface, a first tenon groove 21, a second tenon groove 22 and a second abutting surface; when the first tenon 11 cooperates with the first tenon groove 21, and the second tenon 12 cooperates with the second tenon groove 22, the first abutting surface and the third abutting surface abut to form a first abutting position 4, and the second abutting surface and the fourth abutting surface abut to form a second abutting position 5. By forming the first abutting position 4 and the second abutting position 5 on both sides of the tenon, the first shell 2 and the cover body 1 can be sealed, and the distance between the tenon groove and the outside of the battery shell can be extended, thereby increasing the difficulty of the glue overflowing from the outside of the battery shell, and reducing the difficulty of subsequent glue wiping.

[0069] The experiment used a 4820 sodium battery pack for assembly testing. 500 sets of the shell solution in the prior art of the 4820 sodium battery pack and the battery shell in this embodiment were produced, and the production airtightness qualification rate was statistically analyzed. Five battery packs were selected from each of the qualified ones for vibration testing, and the airtightness test results were compared.

[0070] The qualified rate of production airtightness of the one-time inspection of the appearance of the 4820 sodium battery package in the prior art is 99.2%, the qualified rate of production airtightness of the one-time inspection of the airtightness of the finished battery is 100%, the qualified rate of production airtightness under vibration is 80%, and the qualified rate of production airtightness after vibration is 100%; while the qualified rate of production airtightness of the battery shell in the present embodiment is 100%, the qualified rate of production airtightness of the one-time inspection of the airtightness of the finished battery is 100%, the qualified rate of production airtightness under vibration is 100%, and the qualified rate of production airtightness after vibration is 100%.

[0071] Specifically, the production airtightness pass rate refers to placing the battery shell in an airtightness testing device for airtightness testing. The airtightness testing device introduces gas into the battery shell and detects the pressure value in real time. If the pressure value of the airtightness testing device remains unchanged, it indicates that the production airtightness is qualified; if the pressure value decreases, it indicates that there is a leak in the battery shell, which indicates that the battery shell airtightness is unqualified.

[0072] Specifically, along the direction from the top to the bottom of the first mortise and tenon groove 21 , the first abutting surface and the second abutting surface are staggeredly arranged; the distance between the first abutting surface and the bottom of the first mortise and tenon groove 21 is greater than the groove depth of the first mortise and tenon groove 21 .

[0073] The installation process of the battery shell: introduce an appropriate amount of sealant 3 into the mortise and tenon, then place the first tenon 11 on the cover body 1 in the first tenon and tenon 21, and place the second tenon 12 in the second tenon and tenon 22. After the sealing liquid 3 solidifies, the cover body 1 and the first shell 2 are sealed and buckled to form a sealed cavity.

[0074] Example 1

[0075] See attached Figure 1 The present embodiment provides a battery shell, comprising: a first shell 2 having an inner cavity and a first mounting opening connected to the inner cavity; a cover body 1 capable of covering the first mounting opening; one of the edges of the cover body 1 and the first mounting opening is provided with a first tenon 11 and a second tenon 12 at intervals along the thickness direction of the side wall of the first shell 2, and the other is provided with a first tenon groove 21 matched with the first tenon 11 and a second tenon groove 22 matched with the second tenon 12; after the first tenon 11 is matched with the first tenon groove 21, and the second tenon 12 is matched with the second tenon groove 22, the first shell 2 and the cover body 1 are sealed and buckled together to form a sealed cavity.

[0076] In this embodiment, the cover body 1 is a second shell having an inner cavity, the second shell has a second installation opening, and the first installation opening and the second installation opening can be buckled with each other.

[0077] In this embodiment, the cover body 1 is provided with a first tenon 11 and a second tenon 12 , and the first shell body 2 is provided with a first tenon groove 21 and a second tenon groove 22 .

[0078] In this embodiment, the first installation opening and the second installation opening are matching square openings, first tenons 11 are arranged at intervals around the edge of the second installation opening, and a plurality of second tenons 12 are arranged at intervals around the edge of the second installation opening.

[0079] Specifically, each side edge of the edge of the first mounting opening is provided with a plurality of first tenons 21 matching the first tenons 11, and each side edge of the edge of the first mounting opening is provided with a plurality of second tenons 22 matching the second tenons 12; the first tenons 21 and the second tenons 22 on the first mounting opening are arranged along the thickness direction of the side wall of the first shell 2.

[0080] In this embodiment, along the thickness direction of the side wall of the cover body 1, the second installation opening is sequentially provided with a third abutting surface, a first tenon 11, a second tenon 12 and a fourth abutting surface; along the thickness direction of the side wall of the first shell body 2, the first installation opening is sequentially provided with a first abutting surface, a first tenon groove 21, a second tenon groove 22 and a second abutting surface; when the first tenon 11 cooperates with the first tenon groove 21, and the second tenon 12 cooperates with the second tenon groove 22, the first abutting surface abuts with the third abutting surface to form a first abutting position 4, and the second abutting surface abuts with the fourth abutting surface to form a second abutting position 5.

[0081] Specifically, along the direction from the top to the bottom of the first mortise and tenon groove 21 , the first abutting surface and the second abutting surface are staggeredly arranged; the distance between the first abutting surface and the bottom of the first mortise and tenon groove 21 is greater than the groove depth of the first mortise and tenon groove 21 .

[0082] In this embodiment, the groove depth of the first tenon groove 21 is greater than the groove depth of the second tenon groove 22, and the distance between the groove bottom of the first tenon groove 21 and the groove bottom of the second tenon groove 22 is 0.5-1 mm.

[0083] Preferably, the distance between the bottom of the first tenon groove 21 and the bottom of the second tenon groove 22 can be 0.5-0.6mm, 0.5-0.7mm, 0.5-0.8mm, 0.5-0.9mm, 0.5-1mm, 0.6-0.7mm, 0.6-1mm, 0.7-1mm, 0.8-1mm or 0.9-1mm, etc.

[0084] In this embodiment, the second tenon 12 matches the shape of the second tenon groove 22 , and the shape of the first tenon groove 21 is the same as the shape of the second tenon groove 22 .

[0085] In this embodiment, the first tenon groove 21 and the second tenon groove 22 are both square grooves.

[0086] In this embodiment, the side surface of the first tenon 11 disposed toward the second tenon 12 is an inclined surface 111 ; the width of the first tenon 11 gradually increases from the bottom to the top of the first tenon groove 21 .

[0087] In this embodiment, there is a gap between the first tenon 11 and the first tenon groove 21 , and there is a gap between the second tenon 12 and the second tenon groove 22 , and the sealant 3 can be accommodated in the gaps.

[0088] In this embodiment, a plurality of reinforcing ribs are disposed at intervals on at least one of the first tenon 11 and the second tenon 12 .

[0089] Specifically, the location, quantity and size of the reinforcing ribs on the tenon are set according to actual conditions, as long as the reinforcing ribs increase the strength of the tenon and increase the contact area between the tenon and the glue.

[0090] Preferably, a plurality of reinforcing ribs are arranged at intervals on the surface of the first tenon 11 and / or the second tenon 12 .

[0091] Preferably, reinforcing ribs are only provided on the first tenon 11 , and no reinforcing ribs are provided on the second tenon 12 .

[0092] In the present embodiment, the reinforcing ribs provided on the side surface of the first tenon 11 and / or the side surface of the second tenon 12 are arranged along the height direction of the first tenon 11 .

[0093] Preferably, the arrangement direction of the reinforcing ribs on the side surface of the tenon is consistent with the length direction of the tenon.

[0094] Furthermore, the bottom surface of the tenon is arranged opposite to the bottom of the tenon groove, and the reinforcing ribs of the bottom surface of the tenon are arranged along the thickness direction of the side wall.

[0095] In some other possible embodiments, a plurality of reinforcing ribs are disposed at intervals in at least one of the first tenon groove 21 and the second tenon groove 22 .

[0096] Specifically, the location, quantity and size of the reinforcing ribs in the mortise and tenon are set according to actual conditions, as long as the reinforcing ribs increase the strength of the mortise and tenon and increase the contact area between the mortise and tenon and the glue.

[0097] Preferably, the reinforcing ribs on the side walls of the mortise and tenon groove are arranged along the groove depth direction.

[0098] Although the present invention has been described through preferred embodiments, the present invention is not limited to the embodiments described herein, but also includes various changes and modifications without departing from the scope of the present invention.

[0099] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the components in the drawings and the positions of the components relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed by the utility model.

[0100] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other.

[0101] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A battery housing, characterized in that: include: A first housing (2) having an inner cavity and a first mounting opening communicating with the inner cavity; A cover body (1) capable of covering the first installation opening; one of the edges of the cover body (1) and the first installation opening is provided with at least a first tenon (11) and a second tenon (12) at intervals along the thickness direction of the side wall of the first shell (2), and the other is provided with at least a first tenon groove (21) cooperating with the first tenon (11) and a second tenon groove (22) cooperating with the second tenon (12); After the first tenon (11) is matched with the first tenon groove (21), and the second tenon (12) is matched with the second tenon groove (22), the first shell (2) and the cover (1) are sealed and buckled together to form a sealed cavity.

2. The battery housing according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged at intervals on at least one of the first tenon (11) and the second tenon (12).

3. The battery housing according to claim 2, characterized in that: The reinforcing ribs provided on the side surface of the first tenon (11) and / or the side surface of the second tenon (12) are arranged along the height direction of the first tenon (11).

4. The battery housing according to claim 1, characterized in that: The cover body (1) or the first shell body (2) is provided with at least two tongue-and-groove grooves of different groove depths.

5. The battery casing according to claim 4, characterized in that: The groove depth of the first tenon groove (21) is greater than the groove depth of the second tenon groove (22), and the distance between the groove bottom of the first tenon groove (21) and the groove bottom of the second tenon groove (22) is 0.5-1 mm.

6. The battery case according to claim 1, characterized in that: The side surface of the first tenon (11) facing the second tenon (12) is an inclined surface (111); and the width of the first tenon (11) gradually increases from the bottom to the top of the first tenon groove (21).

7. The battery housing according to claim 1, characterized in that: There is a gap between the first tenon (11) and the first tenon groove (21), and there is a gap between the second tenon (12) and the second tenon groove (22), and the gaps are capable of accommodating the sealant (3).

8. The battery housing according to any one of claims 1 to 7, characterized in that: The cover body (1) is a plate-shaped structure.

9. The battery housing according to any one of claims 1 to 7, characterized in that: The cover body (1) is a second shell having an inner cavity, the second shell having a second installation opening, and the first installation opening and the second installation opening can be buckled with each other.

10. The battery casing according to claim 9, characterized in that: Along the thickness direction of the side wall of the cover body (1), the second installation opening is provided with a third abutting surface, the first tenon (11), the second tenon (12) and a fourth abutting surface in sequence; Along the thickness direction of the side wall of the first shell (2), the first installation opening is provided with a first abutment surface, the first tongue and tongue groove (21), the second tongue and tongue groove (22) and a second abutment surface in sequence; When the first tenon (11) cooperates with the first tenon groove (21), and the second tenon (12) cooperates with the second tenon groove (22), the first abutting surface abuts with the third abutting surface to form a first abutting position (4), and the second abutting surface abuts with the fourth abutting surface to form a second abutting position (5).

Images