Battery shell and battery

Abstract

The utility model relates to the technical field of batteries, in particular to a battery shell and a battery, the battery shell comprises an upper cover, an inner container, an outer shell and a lower cover, the outer shell is provided with an upper opening and a lower opening which are vertically communicated, the upper cover covers the upper opening, the lower cover covers the lower opening, the inner container is contained in the outer shell, and the upper cover and the lower cover are both fixedly connected with the inner container. And the shell is clamped by the upper cover and the lower cover. According to the battery shell, the inner container and the shell are arranged, and the inner container is inserted into the shell, so that when the inner container is collided by the outside, the shell can play a role in buffering and protecting, the damage of the battery cell module in the shell is avoided, the structure is simple, the quick assembly of the battery shell is also facilitated, and the production cost is effectively reduced. The utility model also discloses a battery.

Description

Technical Field

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

[0002] In recent years, with the rapid development of new energy vehicles and energy storage markets, the market size of aluminum-shell lithium batteries has also continued to expand. They are widely used in mobile power supplies, smart homes, electric vehicles, energy storage systems and other fields, and are highly favored for their high energy density and long life.

[0003] At present, the existing battery part is a structure in which the shell is set as the outer shell, upper cover and lower cover for accommodating the battery module. Of course, there are also some structures in which the outer shell and the lower cover are set to be formed in one piece, but both of the above-mentioned structures require screw holes to be set on the outer shell, that is, the outer shell is fixed to the upper cover or the lower cover through a screw structure, which makes the thickness or strength requirements of the outer shell relatively high. At the same time, it is also easy for the outer shell to encounter a large bump during transportation or use, which directly affects the battery module, thereby increasing the risk of battery damage or explosion. Utility Model Content

[0004] One of the purposes of the present utility model is to provide a battery housing and a battery, which aims to address the deficiencies of the above-mentioned prior art and solve the technical problem that the existing battery housing is prone to large bumps during transportation or use, which directly affect the battery cell module and cause damage or explosion of the battery.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A battery case includes an upper cover, an inner liner, an outer shell and a lower cover. The outer shell has an upper opening and a lower opening that are connected to each other. The upper cover is closed to the upper opening, and the lower cover is closed to the lower opening. The inner liner is accommodated in the outer shell. The upper cover and the lower cover are fixedly connected to the inner liner so that the upper cover and the lower cover clamp the outer shell.

[0007] The utility model is further configured as follows: a first extension is provided at the bottom of the upper cover, a first clamping area is provided between the first extension and the side wall of the upper cover, and one end of the shell is accommodated in the first clamping area to clamp the upper cover and the shell.

[0008] The present invention is further configured as follows: at least two first fixing holes are provided on the bottom of the upper cover, and correspondingly, at least two second fixing holes are opened on the top of the inner container, and the first fixing holes correspond to the second fixing holes.

[0009] The utility model is further configured as follows: a clamping groove is provided on the top of the inner liner, and correspondingly, a clamping ring is provided on the bottom of the upper cover, and the clamping ring is embedded in the clamping groove to clamp the upper cover and the inner liner.

[0010] The utility model is further configured as follows: a second extension is provided on the top of the lower cover, a second clamping area is provided between the second extension and the side wall of the lower cover, and the other end of the shell is accommodated in the second clamping area to enable the lower cover to be clamped with the shell.

[0011] The present invention is further configured as follows: at least two third fixing holes are provided at the bottom of the inner container, and correspondingly, at least two fourth fixing holes are provided at the top of the lower cover, and the third fixing holes correspond to the fourth fixing holes.

[0012] The utility model is further configured as follows: bosses are provided at the four corners of the bottom of the lower cover, and some of the fourth fixing holes correspond to the bosses.

[0013] The present invention is further configured as follows: at least two positioning grooves are provided on the top of the lower cover, and correspondingly, at least two protruding columns are provided on the bottom of the inner container, and the protruding columns correspond to the positioning grooves.

[0014] The utility model is further configured as follows: at least two fitting blocks and a plurality of staggered grille bars are provided on the side of the inner container, the fitting blocks are in contact with the inner wall of the outer shell, and gaps are provided between the grille bars and the inner wall of the outer shell.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1) The present application provides an inner liner and an outer shell, and inserts the inner liner into the outer shell, so that when the inner liner is bumped by the outside, the outer shell can play a buffering and protective role, thereby avoiding damage to the internal battery module.

[0017] 2) The inner liner and the upper cover of the present application are fixedly connected, the outer shell and the lower cover are snap-fitted, and then the inner liner is directly inserted into the outer shell, and then the inner liner and the lower cover are locked, so that the upper cover and the lower cover are clamped to the outer shell. The structure is simple, which is conducive to the rapid assembly of the battery shell.

[0018] 3) The housing of the present application is clamped and fixed up and down using an upper cover and a lower cover, which reduces the thickness or strength requirements of the housing. In this case, the housing can be made thinner, effectively reducing production costs.

[0019] A second object of the present invention is to provide a battery, comprising the battery housing described above, wherein the battery utilizes the battery housing to improve the safety performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a schematic diagram of the dispersed structure of the housing in the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the upper cover in the utility model;

[0023] Figure 3 This is a schematic structural diagram of the inner liner in the utility model from one perspective;

[0024] Figure 4 This is a schematic structural diagram of the inner liner in the utility model from another perspective;

[0025] Figure 5 It is a structural diagram of the shell in the utility model;

[0026] Figure 6 This is a schematic structural diagram of the lower cover in the utility model;

[0027] Figure 7 It is a structural diagram of the battery in the utility model.

[0028] The reference numerals used in the above drawings are as follows:

[0029] 1-battery housing;

[0030] 2-upper cover, 21-first extension, 22-first clamping area, 23-first fixing hole, 24-clamping ring;

[0031] 3- liner, 31- second fixing hole, 32- snap-in slot, 33- third fixing hole, 34- boss, 35- fitting block, 36- grille bar;

[0032] 4-shell, 41-upper opening, 42-lower opening;

[0033] 5-lower cover, 51-second extension, 52-second clamping area, 53-fourth fixing hole, 54-boss, 55-positioning groove;

[0034] 6-Battery. DETAILED DESCRIPTION

[0035] In the description of this application, the term "at least two" refers to more than two (including two), and similarly, "plurality" refers to more than two (including two). The technical terms "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. Terms such as "install", "connect", "connect", and "fix" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] In the description of this application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of this application.

[0037] In order to more clearly understand the above-mentioned objectives, technical solutions and advantages of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application, so as to understand in detail how to solve the problems raised in the above-mentioned background technology.

[0038] First, as Figures 1 to 6 As shown, a battery case 1 includes an upper cover 2, an inner liner 3, an outer shell 4 and a lower cover 5. The outer shell 4 has an upper opening 41 and a lower opening 42 that are connected to each other. The upper cover 2 covers the upper opening 41, and the lower cover 5 covers the lower opening 42. The inner liner 3 is accommodated in the outer shell 4. The upper cover 2 and the lower cover 5 are fixedly connected to the inner liner 3 so that the upper cover 2 and the lower cover 5 clamp the outer shell 4.

[0039] Specifically, including but not limited to, the upper cover 2 and the lower cover 5 are rectangular structures, the outer shell 4 is a hollow aluminum shell, and since the outer shell 4 does not need to be provided with a fixing structure such as a screw column to connect the upper cover 2 and the lower cover 5, the outer shell 4 can be made thin, but it is necessary to ensure that the outer shell 4 can play a basic protective and buffering role. Technicians in this field can set the thickness or strength of the outer shell 4 according to actual needs, and no specific limitation is made here. Based on this, the upper cover 2 is tightly clamped with the upper opening 41 of the outer shell 4, and the lower cover 5 is tightly clamped with the lower opening 42 of the outer shell 4. During assembly, the upper cover 2 and the inner liner 3 are fixedly connected, the outer shell 4 and the lower cover 5 are clamped, and then the inner liner 3 is inserted into the outer shell 4 so that the inner liner 3 is accommodated in the outer shell 4. Finally, the lower cover 5 is fixedly connected to the inner liner 3 to achieve the upper cover 2 and the lower cover 5 clamping the outer shell 4 up and down; in addition, a handle and an insertion interface are provided above the upper cover 2 to facilitate the transportation and assembly of the battery shell 1.

[0040] Through the above solution, the shell 4 can play a buffering and protective role, avoiding damage to the internal battery module, facilitating the rapid assembly of the battery housing 1, and reducing production costs.

[0041] As a specific implementation method of the improvement, Figures 1 to 3 As shown, a first extension 21 is provided at the bottom of the upper cover 2, and a first clamping area 22 is provided between the first extension 21 and the side wall of the upper cover 2. One end of the shell 4 is accommodated in the first clamping area 22 to clamp the upper cover 2 and the shell 4.

[0042] Specifically, it includes but is not limited to the following: the first edge extension 21 extends downward along the bottom surface of the upper cover 2, and the actual length of the first clamping area 22 is the same as the thickness of the shell 4, so that the upper cover 2 and the upper opening 41 of the shell 4 are covered. At this time, the top surface of the shell 4 abuts against the bottom surface of the upper cover 2 in the first clamping area 22, so that the side surface connected to the shell 4 and the upper cover 2 when installed is a horizontal plane, realizing the clamping of the upper cover 2 and the shell 4, and the outer wall of the first edge extension 21 fits with the inner wall of the shell 4.

[0043] Through the above solution, the upper cover 2 and the outer shell 4 can be locked in a limited position, which plays a certain sealing and fixing role and is also beneficial to the assembly of the battery housing 1.

[0044] As a specific implementation method of the improvement, Figures 1 to 3 As shown, at least two first fixing holes 23 are provided at the bottom of the upper cover 2 , and correspondingly, at least two second fixing holes 31 are opened at the top of the inner container 3 , and the first fixing holes 23 correspond to the second fixing holes 31 .

[0045] Specifically, including but not limited to, there are 12 first fixing holes 23 to ensure the assembly firmness of the upper cover 2 and the inner liner 3. The first fixing holes 23 are cylindrical holes with a threaded structure. Correspondingly, there are also 12 second fixing holes 31. The second fixing holes 31 are through holes. The top surface of the inner liner 3 is provided with a flange edge, and the second fixing holes 31 are arranged through the flange edge, so that the first fixing holes 23 and the second fixing holes 31 correspond to each other up and down. Based on this, the upper cover 2 and the inner liner 3 can be fixed by a screw with a threaded structure matching the first fixing hole 23. At this time, the screw passes through the second fixing hole 31 and is tightened into the first fixing hole 23.

[0046] Through the above scheme, the first fixing hole 23 and the second fixing hole 31 correspond to each other, and the upper cover 2 and the inner liner 3 can be fixed by screws. At the same time, the screws are a hidden structure, which ensures that the upper cover 2 and the inner liner 3 are tightly connected, thereby improving the sealing and disassembly efficiency of the battery housing 1.

[0047] As a specific implementation method of the improvement, Figures 1 to 3 As shown, a snap-fit groove 32 is provided on the top of the inner liner 3 , and correspondingly, a snap-fit ring 24 is provided on the bottom of the upper cover 2 , which is embedded in the snap-fit groove 32 to snap-fit the upper cover 2 and the inner liner 3 .

[0048] Specifically, including but not limited to, a snap-in groove 32 is provided on the flange edge at the top of the inner liner 3, and at the same time, an annular convex edge extending upward is provided at the top opening of the inner liner 3, and the snap-in groove 32 is arranged along the convex edge. Correspondingly, a snap-in ring 24 is provided at the bottom of the upper cover 2 corresponding to the opening of the inner liner 3. At this time, the first fixing hole 23 is between the snap-in ring 24 and the first extended edge 21, and the side wall of the snap-in ring 24 is also provided with a snap-in. Based on this, when the upper cover 2 and the inner liner 3 are assembled, the snap-in ring 24 is embedded in the snap-in groove 32, and the convex edge of the inner liner 3 is inserted into the snap-in of the upper cover 2, so that the upper cover 2 can be accurately snapped with the inner liner 3, which is beneficial to the assembly of the battery shell 1 and ensures the stability of the structure.

[0049] As a specific implementation method of the improvement, Figures 4 to 6 As shown, a second extension 51 is provided on the top of the lower cover 5 , and a second clamping area 52 is provided between the second extension 51 and the side wall of the lower cover 5 . The other end of the shell 4 is accommodated in the second clamping area 52 so that the lower cover 5 and the shell 4 are clamped.

[0050] Specifically, including but not limited to, the second extended edge 51 extends upward along the top surface of the lower cover 5, the actual length of the second clamping area 52 is the same as the thickness of the shell 4, so that the lower cover 5 and the lower opening 42 of the shell 4 are covered. At this time, the bottom surface of the shell 4 abuts against the top surface of the lower cover 5 in the second clamping area 52, so that the side surface connected by the shell 4, the upper cover 2 and the lower cover 5 when installed is a horizontal plane, realizing the clamping of the lower cover 5 and the shell 4, and the outer wall of the second extended edge 51 is in contact with the inner wall of the shell 4, which increases the aesthetics of the battery case 1 and the uniformity of production.

[0051] As a specific implementation method of the improvement, Figure 1 、 Figure 4 and Figure 6 As shown, at least two third fixing holes 33 are provided at the bottom of the inner container 3 , and correspondingly, at least two fourth fixing holes 53 are provided at the top of the lower cover 5 , and the third fixing holes 33 correspond to the fourth fixing holes 53 .

[0052] Specifically, including but not limited to, there are 8 third fixing holes 33, and the third fixing holes 33 are also cylindrical holes with a threaded structure. Since the bottom of the inner liner 3 is an arc-shaped structure, the side arm surface of the bottom of the inner liner 3 is provided with multiple integrally formed protrusions. The third fixing holes 33 are opened on the protrusions. On the one hand, the thickness of the third fixing holes 33 can be omitted, thereby reducing the overall height of the battery shell 1. On the other hand, the structural strength of the inner liner 3 can be increased. Correspondingly, there are 8 fourth fixing holes 53, and the fourth fixing holes 53 are opened as countersunk holes from the bottom surface of the lower cover 5. The third fixing holes 33 and the fourth fixing holes 53 correspond to each other up and down, and can be inserted into the third fixing holes 33 and tightened after passing through the fourth fixing holes 53 by countersunk screws. This screw connection structure is also hidden, which is conducive to the rapid assembly and aesthetics of the battery shell 1.

[0053] As a specific implementation method of the improvement, Figure 6 As shown, bosses 54 are provided at the four corners of the bottom of the lower cover 5 , and some of the fourth fixing holes 53 correspond to the bosses 54 .

[0054] Specifically, including but not limited to, the boss 54 is square, arc-shaped and circular, and the four bosses 54 are also provided with fourth fixing holes 53. The bosses 54 make the lower cover 5 protrude relative to the ground. Since the bottom surface of the inner liner 3 is a horizontal plane, the top surface of the lower cover 5 is provided with a grid, and the bottom surface of the inner liner 3 is placed in the grid of the lower cover 5. Therefore, the boss 54 facilitates the stable placement of the battery housing 1 on the one hand, and can also effectively circulate gas to enhance the heat dissipation effect on the other hand.

[0055] As a specific implementation method of the improvement, Figure 4 and Figure 6As shown, at least two positioning grooves 55 are provided on the top of the lower cover 5 , and correspondingly, at least two protrusions 34 are provided on the bottom of the inner container 3 , and the protrusions 34 correspond to the positioning grooves 55 .

[0056] Specifically, including but not limited to, a plurality of upwardly protruding cylinders are provided in the grid of the lower cover 5, and positioning grooves 55 are opened in the cylinders. There are 4 positioning grooves 55. Correspondingly, the boss 34 is provided with 4 positioning grooves 55 and the boss 34 corresponds to the upper and lower parts. The boss 34 and the positioning groove 55 match. When the inner liner 3 and the lower cover 5 are rotated, the boss 34 is embedded in the positioning groove 55 to realize the positioning and snap connection of the inner liner 3 and the lower cover 5, which is beneficial to the assembly of the battery housing 1.

[0057] As a specific implementation method of the improvement, Figure 1 、 Figure 3 and Figure 4 As shown, at least two fitting blocks 35 and a plurality of staggered grille bars 36 are provided on the side of the inner container 3 , the fitting blocks 35 abut against the inner wall of the outer shell 4 , and there is a gap between the grille bars 36 and the inner wall of the outer shell 4 .

[0058] Specifically, including but not limited to, multiple vertical grooves are provided on the side of the inner liner 3, and 8 fitting blocks 35 are provided. The fitting blocks 35 are installed in the fitting blocks 35 so that when the outer shell 4 and the inner liner 3 are assembled, the fitting blocks 35 and the inner wall of the outer shell 4 abut against each other to prevent the inner liner 3 from shaking. At the same time, criss-cross grille bars 36 are provided on the side of the inner liner 3. There is a gap between the mesh structure composed of the grille bars 36 and the inner wall of the outer shell 4. On the one hand, it can increase the structural strength of the inner liner 3, and the outer shell 4 can further play an obstructive role after being buffered when it is bumped. On the other hand, it can enhance the heat dissipation effect of the inner liner 3.

[0059] Second, as Figure 7 As shown, a battery 6 includes the above-mentioned battery housing 1, and a battery module (not shown) is accommodated in the inner liner 3 of the battery housing 1, which can reduce the impact of collision on the battery module, thereby improving the safety performance of the battery 6.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the present application.

Claims

1. A battery housing, characterized in that: The invention comprises an upper cover, an inner liner, an outer shell and a lower cover, wherein the outer shell has an upper opening and a lower opening which are connected to each other, the upper cover is closed on the upper opening, the lower cover is closed on the lower opening, the inner liner is accommodated in the outer shell, and the upper cover and the lower cover are fixedly connected to the inner liner so that the upper cover and the lower cover clamp the outer shell.

2. A battery casing according to claim 1, characterized in that: The bottom of the upper cover is provided with a first extension, and a first clamping area is formed between the first extension and the side wall of the upper cover. One end of the shell is accommodated in the first clamping area so that the upper cover and the shell are clamped.

3. A battery casing according to claim 2, characterized in that: The bottom of the upper cover is further provided with at least two first fixing holes. Correspondingly, the top of the inner container is provided with at least two second fixing holes, and the first fixing holes correspond to the second fixing holes.

4. A battery casing according to claim 3, characterized in that: The top of the inner liner is provided with a snap-fitting groove, and correspondingly, the bottom of the upper cover is provided with a snap-fitting ring, which is embedded in the snap-fitting groove to snap-fit the upper cover and the inner liner.

5. A battery casing according to claim 4, characterized in that: The top of the lower cover is provided with a second extension, and a second clamping area is formed between the second extension and the side wall of the lower cover. The other end of the shell is accommodated in the second clamping area so that the lower cover is clamped with the shell.

6. A battery casing according to claim 5, characterized in that: At least two third fixing holes are provided at the bottom of the inner container. Correspondingly, at least two fourth fixing holes are provided at the top of the lower cover. The third fixing holes correspond to the fourth fixing holes.

7. A battery casing according to claim 6, characterized in that: Bosses are provided at the four corners of the bottom of the lower cover, and some of the fourth fixing holes correspond to the bosses.

8. A battery casing according to claim 7, characterized in that: The top of the lower cover is provided with at least two positioning grooves, and correspondingly, the bottom of the inner container is provided with at least two protrusions, and the protrusions correspond to the positioning grooves.

9. A battery casing according to claim 8, characterized in that: At least two fitting blocks and a plurality of staggered grille bars are provided on the side surface of the inner container. The fitting blocks abut against the inner wall of the outer shell, and there is a gap between the grille bars and the inner wall of the outer shell.

10. A battery, characterized in that: The battery casing comprises the battery casing according to any one of claims 1 to 9.

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