Battery case and battery

Abstract

Provided in the present application are a battery case and a battery, which relate to the technical field of batteries. The battery case comprises a case body, a case cover and an electrically conductive piece, wherein the case cover covers the case body to define a mounting cavity; the electrically conductive piece is elastic and is located in the mounting cavity; one of the case cover and the case body is connected to the electrically conductive piece, and the other one thereof abuts against the electrically conductive piece; and the electrically conductive piece is in an elastic compression state.

Description

Battery box and battery

[0001] The present application claims priority to the Chinese patent application No. 202421202596.9, filed on May 29, 2024, with the Chinese Patent Office, the whole content of which is incorporated into the present application by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of batteries, in particular to a battery box and a battery. BACKGROUND

[0003] A battery belongs to electrical products, which will generate electromagnetic radiation in use and will be interfered by external electromagnetic radiation. Therefore, in order to reduce the interference of the battery to the outside and the interference of the battery by the outside, the anti-electromagnetic radiation performance of the battery box needs to be improved. At present, the anti-electromagnetic radiation performance of the battery is improved by electrically connecting the box body and the box cover of the battery to make them into an electromagnetic shielding body. In order to realize the electrical connection of the box body and the box cover, the corresponding electrical connection position between the box body and the box cover is left with a conductive surface, and the box cover and the box body are bolted to electrically and tightly press the conductive surface on the box cover and the conductive surface on the box body, so as to electrically connect the box body and the box cover. SUMMARY

[0004] In this electrical connection mode, the box cover and the box body need to be bolted to electrically and tightly press the conductive surface on the box cover and the conductive surface on the box body. Therefore, the production line of the battery needs to increase the bolted position, which leads to low production efficiency and high production cost of the battery.

[0005] The present application provides a battery box and a battery, which can improve the production efficiency of the battery.

[0006] In a first aspect, the present application provides a battery box, which comprises a box body, a box cover and a conductive piece; the box cover covers the box body to define an installation cavity; the conductive piece is elastic, is located in the installation cavity, one of the box cover and the box body is connected with the conductive piece, the other is abutted with the conductive piece, and the conductive piece is in an elastic compression state.

[0007] In a second aspect, the present application provides a battery, which comprises a battery module and the above-mentioned battery box, and the battery module is arranged in the installation cavity. ADVANTAGEOUS EFFECTS

[0008] In the present application, by taking the elastic conductive piece as the conductive part between the box body and the box cover, and making the conductive piece in the elastic compression state, the conductive piece can be kept in abutment with the box body and the box cover based on the elasticity of the conductive piece, so that the electrical connection between the box body and the box cover is reliable, and further, the bolt is not needed to be arranged for locking. In this way, the production line of the battery does not need to be arranged with the bolt locking station, so that the production efficiency of the battery can be improved, and the production cost of the battery can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 is a structural schematic view of a battery box provided by an embodiment of the present application;

[0010] Fig. 2 is a partial top view of the battery box provided by an embodiment of the present application;

[0011] Fig. 3 is a partial structural schematic view of a sectional view along A-A in Fig. 2;

[0012] Fig. 4 is a structural schematic view of a conductive piece provided by an embodiment of the present application;

[0013] Fig. 5 is a structural schematic view of another conductive piece provided by an embodiment of the present application;

[0014] Fig. 6 is a side view of the conductive piece provided by an embodiment of the present application;

[0015] Fig. 7 is a side view of another conductive piece provided by an embodiment of the present application;

[0016] Fig. 8 is a position schematic view of the conductive piece in the original state provided by an embodiment of the present application.

[0017] Explanation of Reference Signs:

[0018] 001 - battery box;

[0019] 011 - box cover;

[0020] 012 - box body; 121 - threaded hole;

[0021] 013 - mounting cavity;

[0022] 014 - conductive piece; 141 - first elastic piece; 1411 - first end; 1412 - second end; 142 - second elastic piece; 143 - third elastic piece; 1431 - third end; 1432 - fourth end; 144 - elastic piece segment; 145 - anti-scratching piece; 146 - first vertical segment; 147 - second vertical segment; 148 - round corner chamfer; 149 - through hole;

[0023] 015 - fixing bolt. Embodiment of the present application

[0024] Please refer to FIG. 1 to FIG. 3, FIG. 1 is a structural schematic diagram of a battery box 001 provided by an embodiment of the present application, FIG. 2 is a partial top view of the battery box 001 provided by an embodiment of the present application, and FIG. 3 is a partial structural schematic diagram along the section A-A in FIG. 2. An embodiment of the present application provides a battery box 001. The battery box 001 comprises a box body 012, a box cover 011 and a conductive piece 014. The box cover 011 covers the box body 012 to define an installation cavity 013. The conductive piece 014 is elastic. The conductive piece 014 is located in the installation cavity 013. One of the box cover 011 and the box body 012 is connected with the conductive piece 014, and the other is in abutment with the conductive piece 014, and the conductive piece 014 is in an elastic compression state.

[0025] It can be understood that, in order to make the battery box 001 an electromagnetic shielding body with the performance of preventing electromagnetic radiation, the conductive piece 014 is electrically connected with the box body 012 and the box cover 011. Accordingly, an electrically conductive surface is arranged at the position where the box body 012 and the box cover 011 are in contact with the conductive piece 014.

[0026] Among them, the box cover 011 can be in abutment with the conductive piece 014, and the box body 012 can be connected with the conductive piece 014. In this way, the conductive piece 014 can be first fixed in the box body 012, and then as the box cover 011 covers the box body 012, the box cover 011 gradually abuts against the conductive piece 014. When the covering of the box cover 011 is completed, the conductive piece 014 is in an elastic compression state.

[0027] Alternatively, the box cover 011 can be connected with the conductive piece 014, and the box body 012 can be in abutment with the conductive piece 014. In this way, the conductive piece 014 can be first fixed on the side wall of the box cover 011 facing the box body 012, and then as the box cover 011 covers the box body 012, the conductive piece 014 is inserted into the box body 012 and abuts against the box body 012. When the covering of the box cover 011 is completed, the conductive piece 014 is in an elastic compression state.

[0028] After the covering of the box cover 011 is completed, the box cover 011 compresses the conductive piece 014 by its own weight, and the conductive piece 014 tightly abuts against the inside of the box cover 011 by the rebound force, thereby completing the electrical connection of the box body 012-conductive piece 014-box cover 011.

[0029] Exemplarily, the fact that the conductive piece 014 is elastic means that it has the ability of compression and rebound. The structure of the conductive piece 014 includes but is not limited to a spiral structure, a C-shaped structure, an S-shaped structure, a Z-shaped structure and a bellows structure.

[0030] In addition, the material of the conductive piece 014 includes but is not limited to copper, iron, aluminum, copper alloy and the like. Alternatively, the material of the conductive piece 014 is C17200 beryllium copper.

[0031] In the embodiment, the electrically-conductive member 014 with elasticity is used as the electrically-conductive part between the box body 012 and the box cover 011, and the electrically-conductive member 014 is in an elastic compression state, so that the electrically-conductive member 014 can be kept in abutment with the box body 012 and the box cover 011 based on the elasticity of the electrically-conductive member 014, so as to reliably electrically connect the box body 012 and the box cover 011, and further, the electrically-conductive member 014 can be used instead of the bolted box body 012 and the bolted box cover 011 to achieve the electrical connection. In this way, the production line of the battery does not need to be provided with a work station for bolted box body 012 and the bolted box cover 011, so as to improve the production efficiency of the battery and reduce the production cost of the battery.

[0032] In addition, since the bolted box body 012 and the bolted box cover 011 are not used, the box cover 011 can be fixed to the box body 012 by gluing on the contact surface between the box body 012 and the box cover 011, so as to be connected as a whole. This way of fixing the box cover 011 is simple and convenient, and can improve the production efficiency of the battery. In addition, this way does not need to be provided with holes on the box body 012 and the box cover 011 to cooperate with the bolts. In this way, the strength of the box body 012 and the box cover 011 can be improved, and the arrangement of the holes and the interference with other components and structures do not need to be considered, so that the design difficulty is reduced.

[0033] Please refer to FIG. 4, which is a structural schematic diagram of the electrically-conductive member 014 provided by the embodiment of the present application. In an embodiment, along the abutment direction, the electrically-conductive member 014 includes a plurality of elastic piece segments 144 connected in sequence. Adjacent two elastic piece segments 144 are arranged at an angle, specifically, adjacent two elastic piece segments 144 are arranged at an acute angle. Among them, one of the box cover 011 and the box body 012 is connected with the elastic piece segment 144 at one end of the electrically-conductive member 014, and the other is in abutment with the elastic piece segment 144 at the other end of the electrically-conductive member 014.

[0034] It can be understood that the electrically-conductive member 014 can include two, three, four, or five elastic piece segments 144 connected in sequence. When the electrically-conductive member 014 includes two elastic piece segments 144 connected in sequence, the electrically-conductive member 014 can be V-shaped or U-shaped. When the electrically-conductive member 014 includes three elastic piece segments 144 connected in sequence, the electrically-conductive member 014 can be Z-shaped or S-shaped.

[0035] In addition, the plurality of elastic piece segments 144 can be formed by multiple bending of a metal sheet, or the plurality of elastic piece segments 144 can be sequentially welded to form the electrically-conductive member 014.

[0036] In the embodiment, the electrically-conductive member 014 includes a plurality of elastic piece segments 144 connected in sequence, so that the electrically-conductive member 014 is simple in structure and easy to manufacture, thereby improving the manufacturing efficiency of the battery box 001 and controlling the manufacturing cost of the battery box 001.

[0037] Referring to FIG. 5, FIG. 5 is a structural schematic diagram of the conductive member 014 according to an embodiment of the present application. In an embodiment, the conductive member 014 includes three elastic piece segments 144. The three elastic piece segments 144 are the first elastic piece 141, the second elastic piece 142, and the third elastic piece 143 connected in sequence. One of the box cover 011 and the box body 012 is connected with the first elastic piece 141, and the other is in abutment with the third elastic piece 143.

[0038] In the embodiment, the conductive member 014 includes three elastic piece segments 144. On the one hand, the conductive member 014 has elasticity to abut between the top cover and the box body 012, so as to improve the stability of the electrical connection between the conductive member 014 and the top cover and the box body 012. On the other hand, the structure of the conductive member 014 is low in difficulty and high in efficiency.

[0039] Referring to FIG. 4, in an embodiment, the conductive member 014 further includes a scratch-preventing piece 145. The scratch-preventing piece 145 is arranged opposite to the second elastic piece 142 and connected with the end of the third elastic piece 143 away from the second elastic piece 142.

[0040] Specifically, a round chamfer 148 is arranged at the connection between the third elastic piece 143 and the scratch-preventing piece 145. The round chamfer 148 makes the third elastic piece 143 smoothly transition to the scratch-preventing piece 145, so as to reduce the stress at the connection between the third elastic piece 143 and the scratch-preventing piece 145.

[0041] In the embodiment, by arranging the scratch-preventing piece 145 at the end of the third elastic piece 143 away from the second elastic piece 142, the third elastic piece 143 can avoid scratching the part in abutment therewith. Thus, the surface coating of the one of the box body 012 and the box cover 011 in contact with the third elastic piece 143 can be prevented from being damaged, so as to improve the reliability of the battery.

[0042] Referring to FIG. 6, FIG. 6 is a side view of the conductive member 014 according to an embodiment of the present application. In an embodiment, along the direction perpendicular to the third elastic piece 143, the scratch-preventing piece 145 has a height dimension H1, which satisfies: 2 mm≤H1≤5 mm.

[0043] It can be understood that H1 can be, but is not limited to, 2 mm, 2.5 mm, 2.9 mm, 3 mm, 3.2 mm, 3.5 mm, 3.72 mm, 4 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.9 mm, or 5 mm.

[0044] Specifically, 3 mm≤H1≤4 mm.

[0045] In the embodiment, by limiting the height dimension H1 of the anti-scratching piece 145, on the one hand, the anti-scratching property of the anti-scratching piece 145 can be avoided to be poor due to the too small height dimension, and on the other hand, the material cost of the conductive piece 014 can be avoided to be high due to the too large height dimension, so that the manufacturing cost of the battery box 001 can be controlled.

[0046] Referring to FIG. 5, in an embodiment, when the conductive piece 014 is in a natural state, the first elastic piece 141 is perpendicular to the abutting direction, and the third elastic piece 143 has an included angle β with the abutting direction, which satisfies: 0 < β < 90°, and the included angle β is located on the side of the third elastic piece 143 away from the first elastic piece 141.

[0047] It can be understood that the included angle β can be, but is not limited to, 5°, 10°, 15°, 5°, 10°, 15°, 17.5°, 19.5°, 20°, 25°, 30°, 36°, 35°, 37°, 40°, 45°, 48°, 50°, 55°, 58.2°, 60°, 66°, 75°, 85°, 89°.

[0048] Specifically, 75°≤β≤85°.

[0049] In the embodiment, by limiting the included angle β, when the third elastic piece 143 abuts against the related component, the connection position between the second elastic pieces 142 can be in a bending deformation state. In this way, on the one hand, the abutting force between the third elastic piece 143 and the component abutting against it can be increased, and thus the stability of the electrical connection between the third elastic piece 143 and the component abutting against it can be increased; on the other hand, the elasticity of the conductive piece 014 can be improved, so that the conductive piece 014 can have a larger elasticity while having fewer elastic piece segments 144 to meet the electrical connection requirement between the box body 012 and the box cover 011.

[0050] Referring to FIG. 5, in an embodiment, when the conductive piece 014 is in a natural state, the included angle between the second elastic piece 142 and the first elastic piece 141 is α, which satisfies: 30°≤α<90°.

[0051] It can be understood that the included angle α can be, but is not limited to, 5°, 10°, 15°, 5°, 10°, 15°, 17.5°, 19.5°, 20°, 25°, 30°, 36°, 35°, 37°, 40°, 45°, 48°, 50°, 55°, 58.2°, 60°, 66°, 75°, 85°, 89°.

[0052] Specifically, 40°≤α≤50°.

[0053] In the embodiment, by means of the modern included angle a, the first elastic sheet 141 and the second elastic sheet 142 have a suitable included angle. On the one hand, the included angle is prevented from being too small to cause the second elastic sheet 142 to be deformed in a direction uncertain to the first elastic sheet 141, so that the direction of the deformation of the second elastic sheet 142 is determined, and thus the reliability of the conductive part 014 is improved.

[0054] Referring to FIG. 5, in an embodiment, the first elastic sheet 141 has a first end 1411 connected with the second elastic sheet 142 and a second end 1412 away from the first end 1411. In the direction from the first end 1411 to the second end 1412, the first elastic sheet 141 has a length dimension L1, which satisfies: 5 mm≤L1≤17.6 mm.

[0055] It can be understood that the length dimension L1 of the first elastic sheet 141 includes but is not limited to 5 mm, 5.2 mm, 5.4 mm, 6 mm, 6.7 mm, 7.2 mm, 8 mm, 9.9 mm, 11 mm, 12 mm, 13 mm, 14.5 mm, 15 mm, 16 mm, 16.8 mm, 17 mm, 17.6 mm.

[0056] In the embodiment, by limiting the length dimension L1 of the first elastic sheet 141, the first elastic sheet 141 has a suitable length of conductive contact with the box body 012 and the box cover 011, so as to improve the reliability of the electrical connection between the conductive part 014 and the box body 012 and the box cover 011, and the length of the first elastic sheet 141 is prevented from being too large to increase the material cost of the conductive part 014.

[0057] Referring to FIG. 5, in an embodiment, the third elastic sheet 143 has a third end 1431 connected with the second elastic sheet 142 and a fourth end 1432 away from the third end 1431. In the direction from the third end 1431 to the fourth end 1432, the third elastic sheet 143 has a length dimension L2, which satisfies: 5 mm≤L2≤17.6 mm.

[0058] It can be understood that in some other embodiments, the length dimension L1 and the length dimension L2 can be limited at the same time. For example, in some embodiments, 5 mm≤L1≤17.6 mm, and 5 mm≤L2≤17.6 mm.

[0059] It can be understood that the length dimension L2 of the third elastic sheet 143 includes but is not limited to 5 mm, 5.2 mm, 5.4 mm, 6 mm, 6.7 mm, 7.2 mm, 8 mm, 9.9 mm, 11 mm, 12 mm, 13 mm, 14.5 mm, 15 mm, 16 mm, 16.8 mm, 17 mm, 17.6 mm.

[0060] In the embodiment, by limiting the length dimension L2 of the third elastic sheet 143, the third elastic sheet 143 has a suitable length of conductive contact with the box body 012 and the box cover 011, so as to improve the reliability of the electrical connection between the conductive part 014 and the box body 012 and the box cover 011, and avoid that the length of the third elastic sheet 143 is too large to increase the material cost of the conductive part 014.

[0061] Referring to FIG. 4, in an embodiment, the first elastic sheet 141 has a first end 1411 connected with the second elastic sheet 142 and a second end 1412 away from the first end 1411. The direction from the first end 1411 to the second end 1412 is the length direction. In the direction perpendicular to the length direction and the abutting direction, the first elastic sheet 141 has a width dimension W1, which satisfies 6 mm≤W1≤8 mm.

[0062] It can be understood that the width dimension W1 of the first elastic sheet 141 can be but is not limited to 6 mm, 6.2 mm, 6.45 mm, 6.6 mm, 6.8 mm, 6.9 mm, 6.94 mm, 7 mm, 7.2 mm, 7.56 mm, 7.6 mm, 7.7 mm, 7.85 mm, 8 mm.

[0063] In the embodiment, by limiting the width dimension W1 of the first elastic sheet 141, the first elastic sheet 141 has a suitable width of conductive contact with the box body 012 and the box cover 011, so as to improve the reliability of the electrical connection between the conductive part 014 and the box body 012 and the box cover 011, and avoid that the width of the first elastic sheet 141 is too large to increase the material cost of the conductive part 014.

[0064] Referring to FIG. 4, in an embodiment, the first elastic sheet 141 has a first end 1411 connected with the second elastic sheet 142 and a second end 1412 away from the first end 1411. The direction from the first end 1411 to the second end 1412 is the length direction. In the direction perpendicular to the length direction and the abutting direction, the third elastic sheet 143 has a width dimension W2, which satisfies 6 mm≤W2≤8 mm.

[0065] It can be understood that in some embodiments, the width dimension W1 and the width dimension W2 can be simultaneously limited, for example, in some embodiments, 6 mm≤W1≤8 mm, and 6 mm≤W2≤8 mm.

[0066] In addition, the width dimension W2 of the third elastic sheet 143 can be, but is not limited to, 6 mm, 6.2 mm, 6.45 mm, 6.6 mm, 6.8 mm, 6.9 mm, 6.94 mm, 7 mm, 7.2 mm, 7.56 mm, 7.6 mm, 7.7 mm, 7.85 mm, or 8 mm.

[0067] In the embodiment, by limiting the width dimension W2 of the third elastic sheet 143, the third elastic sheet 143 can have a suitable conductive contact width with the box body 012 and the box cover 011, so as to improve the reliability of the electrical connection between the conductive part 014 and the box body 012 and the box cover 011, and avoid that the width of the third elastic sheet 143 is too large to increase the material cost of the conductive part 014.

[0068] Referring to FIG. 7, FIG. 7 is a side view of another conductive part 014 provided in an embodiment of the present application. In an embodiment, the conductive part 014 further includes a first vertical section 146. The first vertical section 146 is located between the first elastic sheet 141 and the second elastic sheet 142. The two ends of the first vertical section 146 are connected with the first elastic sheet 141 and the second elastic sheet 142 respectively. The extension direction of the first vertical section 146 is parallel to the abutting direction.

[0069] In the embodiment, by arranging the first vertical section 146, on the one hand, the height requirement can be met by adding the first vertical section 146 when the required height dimension of the conductive part 014 is large; on the other hand, the conductive part 014 can have large rigidity in the abutting direction, so that the material selection of the conductive part 014 can be increased, so that the conductive part 014 can have suitable conductivity and suitable elasticity.

[0070] Referring to FIG. 7, in an embodiment, the conductive part 014 further includes a second vertical section 147. The second vertical section 147 is located between the second elastic sheet 142 and the third elastic sheet 143. The two ends of the second vertical section 147 are connected with the second elastic sheet 142 and the third elastic sheet 143 respectively. The extension direction of the second vertical section 147 is parallel to the abutting direction.

[0071] It can be understood that the conductive part 014 can also simultaneously include the first vertical section 146 and the second vertical section 147.

[0072] In the embodiment, the second vertical section 147 can be added to meet the height requirement when the height dimension of the conductive member 014 is required to be large, and the conductive member 014 can have a large rigidity in the abutting direction, so that the material of the conductive member 014 can be selected to have appropriate conductivity and elasticity.

[0073] Specifically, a round chamfer 148 is arranged at the connection between the first vertical section 146 and the first elastic sheet 141 and the connection between the first vertical section 146 and the second elastic sheet 142. The round chamfer 148 can make the first vertical section 146 smoothly transition to the first elastic sheet 141 and the second elastic sheet 142, so as to reduce the stress at the connection between the first vertical section 146 and the first elastic sheet 141 and the connection between the first vertical section 146 and the second elastic sheet 142.

[0074] Correspondingly, a round chamfer 148 is arranged at the connection between the second vertical section 147 and the second elastic sheet 142 and the connection between the second vertical section 147 and the third elastic sheet 143. The round chamfer 148 can make the second vertical section 147 smoothly transition to the second elastic sheet 142 and the third elastic sheet 143, so as to reduce the stress at the connection between the second vertical section 147 and the second elastic sheet 142 and the connection between the second vertical section 147 and the third elastic sheet 143.

[0075] Please refer to FIG. 3. In an embodiment, the battery box 001 further comprises a fixing bolt 015. The conductive member comprises a plurality of elastic sheet sections 144 connected in sequence. The elastic sheet section 144 connected with one of the box cover 011 and the box body 012 is the first elastic sheet 141. The elastic sheet section 144 away from the first elastic sheet 141 abuts against the other one of the box cover 011 and the box body 012. The first elastic sheet 141 is provided with a through hole 149. The screw rod end of the fixing bolt 015 is connected with the one of the box cover 011 and the box body 012 connected with the first elastic sheet 141 after passing through the through hole 149.

[0076] Specifically, the first elastic sheet 141 is connected with the box body 012, and the box body 012 is provided with a threaded hole 121. The screw rod end of the fixing bolt 015 is threadedly connected with the threaded hole 121 after passing through the through hole 149.

[0077] In the embodiment, the above arrangement makes the mounting structure of the conductive member 014 simple and easy to implement, so as to control the production cost of the battery box 001.

[0078] Referring to FIG. 7, in an embodiment, the rest of the spring pieces 144 except the first spring piece 141 form a main body. The first spring piece 141 has a first end 1411 connected with the main body and a second end 1412 away from the first end 1411. The through hole 149 is arranged away from the first end 1411. In the direction from the first end 1411 to the second end 1412, the minimum distance between the first end 1411 and the main body is L3, which satisfies: 7.7 mm≤L3≤10 mm.

[0079] It can be understood that the distance L3 can be, but is not limited to, 7.7 mm, 7.89 mm, 8 mm, 8.23 mm, 8.4 mm, 8.6 mm, 8.7 mm, 9 mm, 9.2 mm, 9.5 mm, 9.7 mm, 10 mm.

[0080] In the embodiment, through the above limitation, when the bolt is used to fasten the conductive piece 014, sufficient tool operation space can be ensured, so that the bolt fastening difficulty can be reduced.

[0081] Referring to FIG. 8, FIG. 8 is a position schematic view of the conductive piece 014 in a original state according to an embodiment of the application. In an embodiment, when the conductive piece 014 is in a natural state, in the abutting direction, the size of the conductive piece 014 is H0. When the conductive piece 014 is in an elastic compression state, the size of the conductive piece 014 is H2, which satisfies: 0.7H0≤H2≤0.8H0.

[0082] It can be understood that the size relationship of the conductive piece 014 before and after compression can be, but is not limited to, 0.7H0, 0.71H0, 0.72H0, 0.735H0, 0.75H0, 0.761H0, 0.77H0, 0.78H0, 0.79H0, 0.792H0, 0.795H0, 0.8H0.

[0083] In the embodiment, by limiting the size relationship of the conductive piece 014 before and after compression, on the one hand, the deformation amount of the conductive piece 014 can be small, so that the conductive piece 014 has appropriate abutting force with the box body 012 and the box cover 011, so that the electrical connection reliability between the box body 012 and the box cover 011 can be improved; on the other hand, after the conductive piece 014 is compressed, no yield deformation is generated, so that the conductive piece 014 has a resilience performance and can be repeatedly used.

[0084] Correspondingly, an embodiment of the application provides a battery, which includes a battery module and a battery box 001 provided by some embodiments of the application.

[0085] It can be understood that the battery module includes a plurality of battery cells in series or parallel connection.

[0086] In the embodiment, by adopting the battery box 001 provided by some embodiments of the application, the electrical connection between the box body 012 and the box cover 011 can be achieved through the conductive part 014, so that the locking with bolts is not needed. In this way, the production line of the battery does not need to be configured with a bolt locking station, so that the production efficiency of the battery can be improved, and the production cost of the battery can be reduced.

Claims

1. A battery box (001), comprising: a box body (012); a box cover (011) covering the box body (012) to define a mounting cavity (013); a conductive piece (014) having elasticity, the conductive piece (014) being located in the mounting cavity (013), one of the box cover (011) and the box body (012) being connected with the conductive piece (014), the other being in abutment with the conductive piece (014), and the conductive piece (014) being in an elastic compression state.

2. The battery box (001) according to claim 1, wherein, In the direction of the abutment, the conductive piece (014) comprises a plurality of elastic piece segments (144) connected in sequence, and adjacent two elastic piece segments (144) are arranged at an angle; wherein one of the box cover (011) and the box body (012) is connected with the elastic piece segment (144) at one end of the conductive piece (014), and the other is in abutment with the elastic piece segment (144) at the other end of the conductive piece (014).

3. The battery box (001) according to claim 2, wherein, The conductive piece (014) comprises three elastic piece segments (144), which are a first elastic piece (141), a second elastic piece (142) and a third elastic piece (143) connected in sequence; wherein one of the box cover (011) and the box body (012) is connected with the first elastic piece (141), and the other is in abutment with the third elastic piece (143).

4. The battery box (001) according to claim 3, wherein, The conductive piece (014) further comprises a scratch-preventing piece (145) arranged opposite to the second elastic piece (142) and connected with one end of the third elastic piece (143) away from the second elastic piece (142).

5. The battery box (001) according to claim 4, wherein, In a direction perpendicular to the third elastic piece (143), the scratch-preventing piece (145) has a height dimension H1, which satisfies: 2 mm≤H1≤5 mm.

6. The battery box (001) according to any one of claims 3-5, wherein, When the conductive piece (014) is in a natural state, the first elastic piece (141) is perpendicular to the abutment direction, and the third elastic piece (143) has an included angle β with the abutment direction, which satisfies: 0<β<90°, and the included angle β is located on a side of the third elastic piece (143) away from the first elastic piece (141).

7. The battery box (001) according to any one of claims 3-6, wherein, When the conductive piece (014) is in a natural state, the included angle between the second elastic piece (142) and the first elastic piece (141) is α, which satisfies: 30°≤α<90°.

8. The battery box (001) according to any one of claims 3-7, wherein, The first elastic piece (141) has a first end (1411) connected with the second elastic piece (142) and a second end (1412) away from the first end (1411), and in a direction from the first end (1411) to the second end (1412), the first elastic piece (141) has a length dimension L1, which satisfies: 5 mm≤L1≤17.6 mm, and / or, The third elastic sheet (143) has a third end (1431) connected with the second elastic sheet (142) and a fourth end (1432) away from the third end (1431), and the third elastic sheet (143) has a length dimension L2 from the third end (1431) to the fourth end (1432), which satisfies: 5mm≤L2≤17.6mm.

9. The battery box (001) according to any one of claims 3-8, wherein, The first elastic sheet (141) has a first end (1411) connected with the second elastic sheet (142) and a second end (1412) away from the first end (1411), and the direction from the first end (1411) to the second end (1412) is the length direction, and in the direction perpendicular to the length direction and the abutting direction, the first elastic sheet (141) has a width dimension W1, which satisfies: 6mm≤W1≤8mm, and / or the third elastic sheet (143) has a width dimension W2, which satisfies: 6mm≤W2≤8mm.

10. The battery box (001) according to any one of claims 3-9, wherein, The conductive piece (014) further comprises a first vertical section (146) between the first elastic sheet (141) and the second elastic sheet (142), both ends of the first vertical section (146) are connected with the first elastic sheet (141) and the second elastic sheet (142) respectively, and the extension direction of the first vertical section (146) is parallel to the abutting direction, and / or the conductive piece (014) further comprises a second vertical section (147) between the second elastic sheet (142) and the third elastic sheet (143), both ends of the second vertical section (147) are connected with the second elastic sheet (142) and the third elastic sheet (143) respectively, and the extension direction of the second vertical section (147) is parallel to the abutting direction.

11. The battery box (001) according to any one of claims 1-10, further comprising a fixing bolt (015), the conductive piece (014) comprises a plurality of elastic sheet sections (144) connected in sequence, the elastic sheet section (144) connected with one of the box cover (011) and the box body (012) is a first elastic sheet (141), and the elastic sheet section (144) away from the first elastic sheet (141) abuts against the other one of the box cover (011) and the box body (012). wherein A through hole (149) is arranged on the first elastic sheet (141), and the screw end of the fixing bolt (015) is connected with the one of the box cover (011) and the box body (012) connected with the first elastic sheet (141) after penetrating through the through hole (149).

12. The battery box (001) according to claim 11, wherein, The rest of the elastic sheet segments (144) except the first elastic sheet (141) constitute a main body, the first elastic sheet (141) has a first end (1411) connected with the main body and a second end (1412) away from the first end (1411), the through hole (149) is arranged away from the first end (1411), and the minimum distance between the first end (1411) and the main body in the direction from the first end (1411) to the second end (1412) is L3, and 7.7 mm≤L3≤10 mm is met.

13. The battery box (001) according to any one of claims 1-12, wherein, The size of the conductive piece (014) in the abutting direction is H0 when the conductive piece (014) is in a natural state, and the size of the conductive piece (014) in the elastic compression state is H2, and 0.7H0≤H2≤0.8H0 is met.

14. A battery comprising: The battery box (001) according to any one of claims 1-13: A battery module is arranged in the mounting cavity (013). The battery box (001) according to any one of claims 1-13: A battery module is arranged in the mounting cavity (013).

Images