Battery

Abstract

A battery, characterized in that it comprises: a battery housing, the battery housing comprising: a housing body (1) having openings at both ends; a first cover plate (2) sealing an opening at one end of the housing body (1), the first cover plate (2) comprising a body (201) belonging to the first cover plate and a first bending portion (202) located at an edge of the body (201) belonging to the first cover plate, the first bending portion (202) being arranged to surround the body (201) belonging to the first cover plate and being fixed to the housing body (1) by welding; a second cover plate (3) sealing an opening at the other end of the housing body (1), the second cover plate (3) comprising a body (301) belonging to the second cover plate and a second bending portion (302) located at an edge of the body (301) belonging to the second cover plate, the second bending portion (302) being arranged to surround the body (301) belonging to the second cover plate and being fixed to the housing body (1) by welding; wherein the first cover plate (2), the second cover plate (3) and the housing body (1) form a receiving space, the first bending portion (202) extends in the direction of the receiving space and the second bending portion (302) extends in a direction away from the receiving space; wherein the battery further comprises a battery cell, wherein the battery cell is arranged in the receiving space, wherein the first cover plate (2) is adapted to hold the battery cell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of accumulator or battery technology, in particular to a battery or accumulator. BACKGROUND

[0002] Batteries are currently used in an ever-increasing number of applications, with rechargeable batteries being chosen as the power source for more and more electronic devices, such as mobile phones, laptops, power tools, and electric vehicles. In high-performance battery applications, such as new electric vehicles and energy storage, multiple battery cells often need to be connected in series or parallel, which also places high demands on battery costs.

[0003] An existing battery unit typically comprises a battery casing and a battery cell arranged within the battery casing. The battery casing comprises a casing body and two cover plates. During battery manufacturing, to ensure the weld strength between the casing body and the cover plates, flanged edges are provided on the cover plates for welding them to the casing body. If the bodies belonging to the cover plates of both cover plates are arranged on the side closer to the interior of the casing body relative to the flanged edges, this leads to reduced space utilization efficiency in the casing body, which affects battery performance. SUMMARY

[0004] In view of the above, the present application provides a battery to solve the problem of low space utilization in the housing body caused by arranging the bodies belonging to the cover plates of both cover plates on the side closer to the interior of the housing body relative to the flanged edges.

[0005] The present application provides a battery comprising: a battery case, the battery case comprising: a case body having openings at both ends; a first cover plate sealing an opening at one end of the case body, the first cover plate comprising a body associated with the first cover plate and a first bent portion located at an edge of the body associated with the first cover plate, the first bent portion being arranged to surround the body associated with the first cover plate and being fixed to the case body by welding;a second cover plate sealing an opening at the other end of the housing body, the second cover plate comprising a body belonging to the second cover plate and a second bent portion located at an edge of the body belonging to the second cover plate, the second bent portion being arranged to surround the body belonging to the second cover plate and being fixed to the housing body by welding; the first cover plate, the second cover plate, and the housing body forming a receiving space, the first bent portion extending toward the receiving space, and the second bent portion extending in a direction away from the receiving space.

[0006] Advantageous Effects: Assuming an arrangement direction from the first cover plate to the second cover plate as a first direction, both the first bending portion of the first cover plate and the second bending portion of the second cover plate are bent and extended in the first direction, which means that the first bending portion and the second bending portion have the same bending direction and extension direction, which ensures maximum utilization of the internal space of the case, thereby effectively improving battery performance and solving the problem of low space utilization in the case body caused by the cover plate related bodies of both cover plates being arranged on the side closer to the internal space of the case body relative to the flanged edges.Since both cover plates have the same bending direction, the welding heat is not completely conducted to the battery cell when welding the two cover plates to the housing body, thus avoiding damage to the battery cell separator during the welding process and ensuring the safety and performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] To more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the accompanying drawings required to describe the specific embodiments or the prior art are briefly introduced below. It should be understood that the accompanying drawings described below illustrate some embodiments of the present application, and that a person of ordinary skill in the art can create other drawings based on these drawings without creative effort. Fig. 1 shows a battery housing according to an embodiment of the present application in a perspective view. Fig. 2 shows that in Fig. 1 shown battery housing in a view from above. Fig. 3 shows that in Fig. 2 shown battery housing in a sectional view along direction AA. Fig. 4 shows area B in Fig. 3 in an enlarged partial view. Fig. 5 shows the area C in Fig. 3 in an enlarged partial view. Reference numbers: 1 housing body; 101 - welding area; 2 first cover plate; 201 - body belonging to the first cover plate; 202 - first bending section; 203 - groove; 3 second cover plate; 301 - body belonging to the second cover plate; 302 - second bending section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0008] To clarify the objectives, technical solutions, and advantages of the embodiments of the present application, the technical solutions in the embodiments of the present application are clearly and completely described in conjunction with the accompanying drawings. It is understood that the described embodiments are only a portion of the embodiments of the present application and not all embodiments of the present application. All other embodiments that a person skilled in the art creates without creative effort based on the embodiments of the present application fall within the scope of the present application.

[0009] In the related technology, the bending and extension directions of the flanged edges of both cover plates are opposite to each other. If the bodies of both cover plates belonging to the cover plates are arranged on the side that is closer to the interior of the housing body relative to the flanged edges, this leads to reduced space utilization in the housing body, which affects battery performance.

[0010] In order to solve the above problem, the embodiments of the present disclosure will be described below in connection with Fig. 1 to 5 described.

[0011] According to an embodiment of the present application, in one aspect, a battery is provided comprising: a battery case, the battery case comprising a case body 1, a first cover plate 2 and a second cover plate 3.

[0012] In particular, the housing body 1 has openings at both ends.

[0013] The first cover plate 2 seals an opening at one end of the housing body 1, the first cover plate 2 comprising a body 201 belonging to the first cover plate and a first bending portion 202 located at an edge of the body 201 belonging to the first cover plate, the first bending portion 202 being arranged to surround the body 201 belonging to the first cover plate and being fixed to the housing body 1 by welding.

[0014] The second cover plate 3 seals an opening at the other end of the housing body 1, the second cover plate 3 comprising a second cover plate body 301 and a second bent portion 302 located at an edge of the second cover plate body 301, the second bent portion 302 being arranged to surround the second cover plate body 301 and being fixed to the housing body 1 by welding.

[0015] The first cover plate 2, the second cover plate 3 and the housing body 1 form a receiving space, the first bending section 202 extends in the direction of the receiving space and the second bending section 302 extends in a direction away from the receiving space.

[0016] In the battery adopting this embodiment, assuming an arrangement direction from the first cover plate 2 to the second cover plate 3 as a first direction, both the first bending portion 202 of the first cover plate 2 and the second bending portion 302 of the second cover plate 3 are bent and extended in the first direction, which means that the first bending portion 202 and the second bending portion 302 have the same bending direction and extension direction, which ensures maximum utilization of the internal space of the case, thereby effectively improving battery performance and solving the problem of low space utilization in the case body caused by the cover plate-related bodies of both cover plates being arranged on the side closer to the internal space of the case body relative to the flanged edges.

[0017] In the related technology, the bending direction and the extending direction of the flanged edges of both cover plates are opposite to each other, causing all the welding heat to be conducted to the battery cell when welding both cover plates to the casing, thereby causing damage to the battery cell separator, which seriously affects the safety and performance of the battery.

[0018] However, in the present embodiment, both cover plates have the same bending direction, so that the welding heat is not completely conducted to the battery cell when welding the two cover plates to the case body 1, thereby preventing damage to the separator of the battery cell during the welding process and ensuring the safety and performance of the battery.

[0019] It should be noted that when the battery is exposed to external influences, the design of the two cover plates can provide better mechanical protection, improve the crush resistance of the battery against external influences, reduce the risk of damage to the battery cell caused by external forces, and absorb and dissipate external vibrations to a certain extent to protect the internal components of the battery from damage.

[0020] As in Fig. 3, in one embodiment, the battery further comprises a battery cell disposed within the receiving space, with the first cover plate 2 configured to support the battery cell. When the battery cell is disposed on the first cover plate 2, the weight of the battery cell exerts minimal influence on the weld between the first cover plate 2 and the housing body 1. Therefore, the first cover plate 2 provides better support for the battery cell, significantly improving the safety, reliability, and service life of the battery.

[0021] In the related technology, the battery case comprises a case body and a single cover plate, with the case body having an opening at one end and four corners at the end farther from the opening. The case body is made of stainless steel, formed by stamping stainless steel sheets. Due to the low formability of stainless steel, the corners are easily torn during forming, making forming difficult.

[0022] To solve the above problem, in the present embodiment, the case body 1 has openings at both ends, two cover plates are welded to both ends of the case body 1, and the first bent portion 202 of the first cover plate extends toward the receiving space, thereby ensuring reliable welding between the first cover plate 2 and the case body 1. If the first bent portion 202 of the first cover plate 2 extends in a direction away from the receiving space when the first cover plate 2 holds the battery cell, the battery cell would exert a force perpendicular to the first cover plate body 201 of the first cover plate 2, which could act as a tear-through force and easily tear the first cover plate away from the case body, affecting the reliability of the welding between the first cover plate and the case body.After the first bending portion 202 of the first cover plate 2 is extended toward the receiving space, the gravity of the battery cell acts on the first cover plate body 201 of the first cover plate 2, and this gravity acts similarly to a tensile force and has a minimal influence on the weld between the first cover plate 2 and the case body 1, thereby improving the reliability of the welded joints of the case.

[0023] As in Fig. 5, a ratio of a height h1 to a thickness T1 of the first bending portion 202 in one embodiment is in the range of 0.6 to 0.9. The height of the first bending portion 202 refers to the dimension of the first bending portion 202 in a direction perpendicular to the upper side of the body 201 belonging to the first cover plate, in particular to a distance from the upper end of the first bending portion 202 near the receiving space to the side of the body 201 belonging to the first cover plate near the receiving space, and the thickness of the first bending portion 202 refers to a distance from the outer wall surface to the inner wall surface of the first bending portion 202.

[0024] In particular, the height h1 of the first bending section 202 is the Fig. 5 shown vertical dimension of the first bending section 202 and the thickness T1 of the first bending section 202 is the one shown in Fig. 5 shown horizontal dimension of the first bending section 202.

[0025] Furthermore, if the ratio of the height h1 to the thickness T1 of the first bending section 202 is too small, this indicates that either the height of the first bending section 202 is too small or the thickness of the first bending section 202 is too large. If the first bending section 202 is too thick, this will significantly affect the battery cell and may damage the battery cell. If the height of the first bending section 202 is too small, the welding area 101 between the first bending section 202 and the housing body will be small, resulting in poor welding strength between the housing body 1 and the first cover plate 2.

[0026] If the ratio of the height h1 to the thickness T1 of the first bending portion 202 is too large, this indicates that either the height of the first bending portion 202 is too large or the thickness of the first bending portion 202 is too small. If the height of the first bending portion 202 is too large, it will affect the insertion of the battery cell, which will affect the assembly of the battery. If the thickness of the first bending portion 202 is too small, the first bending portion 202 is prone to penetration during the welding process between the case body 1 and the first bending portion 202, resulting in the formation of welding slag and compromising the safety of the battery.

[0027] Therefore, when the ratio of the height h1 to the thickness T1 of the first bending portion 202 is in the range of 0.6 to 0.9, the welding strength between the first cover plate 2 and the case body 1 can be ensured while controlling the dimensions of the first bending portion 202, reducing the interference of the first bending portion 202 to the battery cell, and ensuring the safety and performance of the battery cell.

[0028] In addition, the height of the first bending portion 202 is in the range of 0.3 to 0.8 mm and the thickness of the first bending portion 202 is in the range of 0.35 to 0.9 mm.

[0029] In particular, the height of the first bending portion 202 may preferably be 0.4 mm, 0.45 mm, 0.48 mm, 0.5 mm, 0.55 mm, 0.58 mm, 0.6 mm, 0.65 mm, or 0.7 mm. The thickness of the first bending portion 202 may preferably be 0.4 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.8 mm, or 0.85 mm.

[0030] As in Fig. 5, in one embodiment, the welding region 101 between the housing body 1 and the first bending portion 202 is located on the surface of the housing body 1, with the welding region 101 not penetrating the first bending portion 202. Since the welding region 101 does not penetrate the first bending portion 202, this can reduce the occurrence of micropores or cracks caused by welding penetration, thereby improving the sealing performance of the battery, preventing electrolyte leakage or external contaminants from entering the battery, and reducing the risk of leakage.Non-penetrative welding maintains the integrity of the material, avoids weakening of the material that could occur with penetration welding, and thus maintains the structural strength of the housing and cover plate, and also reduces stress concentration, thereby improving the fatigue resistance of the weld area 101.

[0031] It should be noted that the welding area 101 is the one shown in Fig. 5 shown grey area.

[0032] In one embodiment, an insulating element (not shown in the figures) is arranged between the battery cell and the body 201 belonging to the first cover plate. This means that the insulating element is arranged between the battery cell and the body 201 belonging to the first cover plate. The insulating element can effectively isolate the electrical connection components on the cover plate from the battery cell, thereby preventing short-circuit risks due to poor contact. The insulating element can serve as a buffer layer that reduces the mechanical stress between the cover plate and the battery cell, thus preventing damage to the battery cell caused by vibration or impact.The insulating element typically has low thermal conductivity, which can reduce heat exchange between the battery cell and the external environment and help maintain the temperature stability of the battery cell. The electrolyte surrounding the battery cell can corrode the metal cover plate, and the insulating element can prevent such chemical corrosion. The insulating element can improve the sealing performance of the battery, thus preventing electrolyte leakage or external contaminants from entering the battery.

[0033] Furthermore, a height of the insulating member is not less than the height of the first bending portion 202, which means that the height of the insulating member is either greater than or equal to the height of the first bending portion 202. This configuration allows the insulating member to fill the groove 203 formed in the first cover plate body 201 and the first bending portion 202, thereby reducing the interference and impact of the first bending portion 202 on the battery cell. Herein, the height of the insulating member refers to the distance from the upper end of the insulating member near the receiving space to the lower end of the insulating member far from the receiving space.

[0034] In particular, a larger or taller insulating element can provide better electrical insulation and prevent short circuits caused by contact between the battery cell and the cover plate. A larger insulating element can serve as a buffer layer, further reducing direct contact between the cover plate and the battery cell, thus protecting the battery cell from the effects of mechanical stress. A larger insulating element can better seal the interior of the battery and prevent moisture, dust, and other contaminants from entering the battery, thereby improving battery water quality and dust resistance. A larger insulating element can better prevent electrolyte leakage through gaps between the cover plate and the casing.A larger insulating element can provide additional thermal barriers, reducing heat exchange between the battery cell and the external environment and helping to maintain the temperature stability of the battery cell.

[0035] As in Fig. 5, a ratio of the distance m to the thickness T1 of the first bending section 202 in one embodiment is in the range of 65% to 90%, wherein the distance m is located between a welding area 101 between the housing body 1 and the first bending section 202 and a side surface of the first bending section 202 adjacent to the insulating element. The distance m refers to the distance between the side surface of the welding area 101 adjacent to the insulating element and the side surface of the first bending section 202 adjacent to the insulating element, in particular to the horizontal dimension between the inside of the welding area 101 and the inner surface of the first bending section 202, as shown in Fig. 5 shown.

[0036] Furthermore, if the ratio of m to T1 is small, the welding heat during welding will affect the battery cell, compromising battery safety. If the ratio is large, the welding strength between the first cover plate 2 and the housing will be insufficient, preventing a secure weld between the first cover plate 2 and the housing.

[0037] Therefore, the ratio of m to T1, when in the range of 65% to 90%, can both ensure the welding strength between the first cover plate 2 and the casing and maintain a sufficient distance between the welding area 101 and the battery cell, which reduces the effect of welding heat on the battery cell.

[0038] In particular, the ratio of m to T1 may preferably be 70%, 75%, 78%, 80% or 85%.

[0039] In one embodiment, the distance between the first bending section 202 and the insulating element is in the range of 0.1 mm to 0.8 mm. The distance between the first bending section 202 and the insulating element refers to the distance between the side of the first bending section 202 located near the insulating element and the side of the insulating element located near the first bending section 202, in particular to the distance between the inner side surface of the first bending section 202 and the outer side surface of the insulating element.

[0040] Furthermore, if the distance between the first bending portion 202 and the insulating member is large, the possibility of contact between the battery cell and the first bending portion is increased, affecting the safety of the battery. If the distance between the first bending portion 202 and the insulating member is small, the welding heat generated when welding the first bending portion to the case body 1 will affect the insulating member, thereby impairing the performance of the insulating member.

[0041] Therefore, the distance between the first bending portion 202 and the insulating member, if it is in the range of 0.1 mm to 0.8 mm, ensures that the welding heat during welding does not affect the insulating member and at the same time reduces the possibility of contact between the battery cell and the first bending portion.

[0042] In particular, the distance between the first bending portion 202 and the insulating member may preferably be 0.2 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm or 0.7 mm.

[0043] As in Fig. 3, in one embodiment the battery further comprises a terminal post.

[0044] Terminal pin arranged on the second cover plate 3. Since the second bent portion 302 of the second cover plate 3 extends in a direction away from the receiving space, the terminal pin, when arranged on the second cover plate 3, is arranged in a recess formed by the second bent portion 302 and the second cover plate body 301, thereby reducing the influence of the terminal pin on the overall height of a battery unit and thus lowering the overall height of the battery. By placing the terminal pin on the second cover plate 3, the height of the terminal pin protruding from the housing can be reduced, which improves space utilization efficiency. The terminal pin is connected to the electrode tab of the battery cell via a connector.

[0045] In one embodiment, the battery further comprises a battery cell having an electrode tab, wherein the electrode tab is located on a side of the battery cell facing the second cover plate 3 and is connected to the terminal pin. The arrangement position of the electrode tab can shorten the current transmission path and reduce contact resistance, thereby improving the reliability of electrical connections. The close proximity of the electrode tab to the terminal pin increases current transmission efficiency, reducing energy loss from long-distance transmission, and the shorter connection distance can reduce stress concentration, preventing wear or breakage during long-term use.

[0046] As in Fig. 4 and Fig. 5, a ratio of a height h1 of the first bending portion 202 to a height h2 of the second bending portion 302 in one embodiment is in the range of 0.6:1 to 0.88:1. Since the first bending portion 202 is located inside the receiving space while the second bending portion 302 is located outside the receiving space, the length of the first bending portion 202 needs to be shorter than the length of the second bending portion 302, which allows the battery cell to be arranged higher in the vertical direction of the case, further improving interior space utilization efficiency and increasing battery performance. In addition, since the second bending portion 302 is located on the same side as the terminal pin, the length of the second bending portion 302 needs to be increased to prevent welding heat from affecting the terminal pin.

[0047] In particular, the ratio of height h1 of the first bending section 202 to height h2 of the second bending section 302 may preferably be 0.65:1, 0.7:1, 0.75:1, 0.8:1 or 0.85:1.

[0048] As in Fig. 4, in one embodiment, the battery case is made of stainless steel, wherein the first cover plate 2, the second cover plate 3 and the case body 1 are all made of stainless steel, thereby providing advantages such as good corrosion resistance, high strength, excellent thermal expansion and thermal insulation properties, good permeability resistance or leakage, excellent safety performance and good weldability.

[0049] In addition, a thickness T of the housing body 1 is in the range of 0.3 mm to 0.8 mm. The thickness of the housing body 1 refers to the distance between the inner surface and the outer surface of the housing body 1, in particular to the horizontal dimension of the housing body 1, as shown in Fig. 4 shown.

[0050] If the case thickness is too thick, it increases the overall weight of the battery, which affects the weight of electric vehicles. A thicker case body 1 requires more material, which increases manufacturing costs and takes up more space, which may not be suitable for space-constrained applications. If the case thickness is too thin, it has lower mechanical strength than thicker cases and is more susceptible to deformation or damage from external forces. Thinner cases provide less protection for battery cells and may not be able to effectively prevent damage to the battery cell from external influences or compression.

[0051] Therefore, if the thickness T of the package body 1 is in the range of 0.3 mm to 0.8 mm, it can ensure the strength of the package body, and material cost, manufacturing cost and space requirement can be controlled.

[0052] It is understood that in another embodiment, the battery housing may also be made of other materials and is not limited to stainless steel.

[0053] In one embodiment, the first cover plate 2 is attached to the housing body 1 by through-welding. The welding is performed from the outer surface of the housing body 1 and extends to the first bending portion 202, thereby connecting the first cover plate 2 to the housing. Through-welding offers advantages such as a high-strength connection, good sealing properties, wide-ranging applicability, and high weld quality.

[0054] It is understood that in another embodiment, butt welding methods or other joining methods may also be used for the first cover plate 2 and the housing body 1.

[0055] In one embodiment, the second cover plate 3 is also attached to the housing body 1 by through-welding. The welding is performed from the outer surface of the housing body 1 and extends to the second bending section 302. Through-welding offers advantages such as a high-strength connection, good sealing properties, wide-ranging applicability, and high weld quality.

[0056] It is understood that in another embodiment, butt welding methods or other joining methods may also be used for the second cover plate 3 and the housing body 1.

[0057] In one embodiment, the body 201 belonging to the first cover plate and the first bending portion 202 are formed by bending a single plate material, and the body 301 belonging to the second cover plate and the second bending portion 302 are formed by bending a single plate material. Both cover plates are machined from plate materials, thereby simplifying processing and reducing manufacturing costs.

[0058] According to embodiments of the present application, in another aspect, a battery pack is also provided that includes the battery described above.

[0059] In addition, the battery pack comprises multiple batteries and associated components to form a complete energy storage unit. The design and construction of the battery pack typically requires consideration of several factors, including safety, reliability, thermal management, and electrical connectivity.

[0060] Although embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope of the present application.

Claims

[1] Battery, characterized by that it comprises: a battery housing, wherein the battery housing comprises: a housing body (1) having openings at both ends; a first cover plate (2) sealing an opening at one end of the housing body (1), the first cover plate (2) comprising a body (201) belonging to the first cover plate and a first bending portion (202) located at an edge of the body (201) belonging to the first cover plate, the first bending portion (202) being arranged to surround the body (201) belonging to the first cover plate and being fixed to the housing body (1) by welding; a second cover plate (3) sealing an opening at the other end of the housing body (1), the second cover plate (3) comprising a body (301) belonging to the second cover plate and a second bending portion (302) located at an edge of the body (301) belonging to the second cover plate, the second bending portion (302) being arranged to surround the body (301) belonging to the second cover plate and being fixed to the housing body (1) by welding; wherein the first cover plate (2), the second cover plate (3) and the housing body (1) form a receiving space, the first bending portion (202) extends in the direction of the receiving space and the second bending portion (302) extends in a direction away from the receiving space; wherein the battery further comprises a battery cell, wherein the battery cell is arranged in the receiving space, wherein the first cover plate (2) is adapted to hold the battery cell. [2] Battery according to claim 1, characterized by that a ratio of a height h1 to a thickness T1 of the first bending section (202) is in the range of 0.6 to 0.

9. [3] Battery according to one of the preceding claims, characterized by that a welding area between the housing body (1) and the first bending section (202) is located on a surface of the housing body (1) and the welding area does not penetrate through the first bending section (202). [4] Battery according to one of the preceding claims, characterized by that an insulating element is arranged between the battery cell and the body (201) belonging to the first cover plate and a height of the insulating element is not less than the height of the first bending section (202). [5] Battery according to claim 4, characterized by that a ratio of a distance m to a thickness T1 of the first bending portion is in the range of 65% to 90%, wherein the distance m is located between a welding area between the housing body (1) and the first bending portion (202) and a side surface of the first bending portion (202) adjacent to the insulating element. [6] Battery according to claim 4 or 5, characterized by that a distance between the first bending section (202) and the insulating element is in the range of 0.1 mm to 0.8 mm. [7] Battery according to one of the preceding claims, characterized by that the battery further comprises a terminal pin and the terminal pin is arranged on the second cover plate (3). [8] Battery according to claim 7, characterized bythat the battery further comprises a battery cell, the battery cell comprises an electrode tab, the electrode tab is located on a side of the battery cell facing the second cover plate (3) and is connected to the terminal pin. [9] Battery according to one of the preceding claims, characterized by that a ratio of a height h1 of the first bending section (202) to a height h2 of the second bending section (302) is in the range from 0.6:1 to 0.88:

1. [10] Battery according to one of the preceding claims, characterized by that the battery housing is made of stainless steel and a thickness T of the housing body (1) is in the range of 0.3 mm to 0.8 mm. [11] Battery according to one of the preceding claims, characterized bythat the first cover plate is fastened to the housing body by through-welding and / or a butt-welding process, in particular wherein the welding is carried out from the outer surface of the housing body and extends to the first bending section. [12] Battery according to one of the preceding claims, characterized by , that the second cover plate is attached to the housing body by welding and / or a butt welding process, in particular wherein the welding is carried out from the outer surface of the housing body and extends to the first bending section. [13] Battery according to one of the preceding claims, characterized by , that the body belonging to the first cover plate and the first bending section are formed by bending a single plate material, and the body belonging to the second cover plate and the second bending section are formed by bending a single plate material. [14] Electronic device, characterized by that it has a battery according to one of the preceding claims as a power source. [15] Electronic device according to claim 14, characterized by that it is a mobile phone, laptop, power tool or electric vehicle.

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