阅读说明：本技术 铝壳电池及用于制造其的方法 (Aluminum-case battery and method for manufacturing the same ) 是由 常海涛 李云星 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种铝壳电池及用于制造其的方法,铝壳电池包括壳体和电芯,壳体包括间隔设置的第一部分和第二部分；电芯设置于壳体内,并且电芯设置有极耳,极耳从壳体延伸出并位于第一部分和第二部分之间,其中,第一部分、第二部分和极耳彼此相邻的部分通过热压形成的胶层密封连接。本发明的铝壳电池,极耳与壳体之间通过热压形成的胶层能够更牢固可靠地连接在一起,并且两者之间密封效果好,不会出现开胶等现象,这提高了电池的安全性能；铝壳电池不仅安全性能高,而且能够具有一定的机械强度,低膨胀性能等优点。(The invention discloses an aluminum-shell battery and a method for manufacturing the same, wherein the aluminum-shell battery comprises a shell and a battery core, wherein the shell comprises a first part and a second part which are arranged at intervals; the battery cell is arranged in the shell and provided with a tab, the tab extends out of the shell and is positioned between the first part and the second part, and the parts, adjacent to each other, of the first part, the second part and the tab are connected in a sealing mode through a glue layer formed by hot pressing. According to the aluminum-shell battery, the lug and the shell can be connected together more firmly and reliably through the glue layer formed by hot pressing, the sealing effect between the lug and the shell is good, the phenomena of glue failure and the like can not occur, and the safety performance of the battery is improved; the aluminum-shell battery has high safety performance, and can have the advantages of certain mechanical strength, low expansion performance and the like.)

1. An aluminum-can battery, comprising:

a housing comprising a first portion and a second portion arranged at a distance; and

a cell disposed within the housing and provided with a tab extending from the housing and located between the first portion and the second portion,

wherein the first portion, the second portion and the portions of the tabs adjacent to each other are hermetically connected by a glue layer formed by hot pressing.

2. The aluminum-can battery of claim 1, wherein the glue layer is made of a glue material comprising a binder and a glue film, the binder being different from the glue film.

3. The aluminum can battery of claim 2,

the adhesive is modified polypropylene, and the adhesive film is made of a polypropylene material; and/or

The adhesive material further comprises a tab adhesive, and the tab adhesive is different from the adhesive film in material.

4. The aluminum can battery as recited in claim 1, wherein the case includes a lid plate and a case main body, the lid plate being connected to an end portion of the case main body in the axial direction, the first portion being configured as one half of the lid plate, the second portion being configured as the other half of the lid plate.

5. The aluminum-shell battery of claim 4, wherein the tabs comprise a positive tab and a negative tab, the positive tab and the negative tab being located on the same side of the aluminum-shell battery in the axial direction or on both sides of the housing in the axial direction, respectively.

6. The aluminum-can battery of claim 1, wherein the housing includes an upper half-shell constituting the first portion and a lower half-shell constituting the second portion, the upper half-shell being located below the lower half-shell, the tabs including a positive tab and a negative tab, both located on a circumferential side of the aluminum-can battery.

7. The aluminum-can battery according to claim 1, wherein an end surface of an end portion of the case in the axial direction is provided with a liquid pouring port and a cap sheet that covers the liquid pouring port and is sealingly connected to the case.

8. The aluminum-can battery of claim 1, wherein the end face of the first portion is provided with a first groove and the end face of the second portion is provided with a second groove, the tab being located between the first groove and the second groove.

9. A method for producing the aluminum-can battery according to any one of claims 1 to 8, characterized by comprising the steps of:

disposing an adhesive material on an end surface of the first portion of the housing;

an adhesive material is also arranged on the end face of the second part of the shell;

correspondingly placing the first and second portions provided with the adhesive material relative to the cells with the tabs of the cells located therebetween, the tabs being provided with tab adhesive therearound; and

and carrying out hot-pressing treatment on the first part and the second part with the adhesive materials and the tabs with the tab adhesives to form adhesive layers, wherein the parts of the first part, the second part and the tabs adjacent to each other are hermetically connected through the adhesive layers.

10. The method of claim 9, wherein a first adhesive is applied to the end surface of the first portion of the housing and then a first adhesive film is attached to the first portion by the first adhesive; and coating a second adhesive on the end face of the second part of the shell, and then connecting a second adhesive film to the second part through the second adhesive.

11. The method of claim 10, wherein the first adhesive film and the first part attached to the first adhesive are autoclaved to connect the first adhesive film to the first part; and performing hot-pressing treatment on the second adhesive film attached to the second adhesive and the second part to connect the second adhesive film to the second part.

12. The method of claim 9, wherein the heat and pressure are applied during the autoclaving process, or simultaneously.

13. The method according to claim 9, wherein the pressure is controlled to be 0.2-0.8 MPa, the temperature is controlled to be 170-210 ℃, and the time of the hot pressing is 1-4 s.

14. The method of claim 9,

hermetically welding a cover plate of the case constituting the first and second portions to a case main body of the case; and/or

The pouring port of the case is covered with a flap, and the flap is sealingly welded to the case.

Technical Field

The invention relates to the technical field of aluminum-shell batteries, in particular to an aluminum-shell battery and a method for manufacturing the same.

Background

The existing aluminum-casing battery or soft package battery generally includes a battery cell and a casing covering the battery cell. The battery core is connected with a positive electrode lug and a negative electrode lug. The end face of the end portion of the case in the height direction thereof may be provided with through holes, and the positive electrode tab and the negative electrode tab can be passed out from the respective through holes to be used as the positive electrode output and the negative electrode output of the battery. And a tab adhesive is arranged around the tab, the tab adhesive is connected with the shell through hot melting, and a gap between the tab and the wall of the through hole is sealed.

The mode of sealing by adopting the tab glue is adopted, so that the sealing effect is poor, the phenomena of glue opening and the like are easy to occur, and the potential safety hazard is caused.

Therefore, there is a need for an aluminum-can battery and a method for manufacturing the same to at least partially address the above problems.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above problems, the present invention provides an aluminum-can battery including:

a housing comprising a first portion and a second portion arranged at a distance; and

a cell disposed within the housing and provided with a tab extending from the housing and located between the first portion and the second portion,

wherein the first portion, the second portion and the portions of the tabs adjacent to each other are hermetically connected by a glue layer formed by hot pressing.

Optionally, the adhesive layer is made of an adhesive material including an adhesive and an adhesive film, the adhesive being different from the adhesive film.

Optionally, the adhesive is modified polypropylene, and the adhesive film is made of a polypropylene material; and/or

The adhesive material further comprises a tab adhesive, and the tab adhesive is different from the adhesive film in material.

Optionally, the housing includes a cover plate and a housing main body, the cover plate being connected to an end portion of the housing main body in the axial direction, the first portion being configured as one half of the cover plate, and the second portion being configured as the other half of the cover plate.

Optionally, the tabs include a positive tab and a negative tab, and the positive tab and the negative tab are located on the same side of the axial direction of the aluminum-shell battery or on both sides of the axial direction of the housing respectively.

Optionally, the casing is including constituting the upper half shell of first portion with constitute the lower half shell of second portion, the upper half shell is located the below of lower half shell, utmost point ear includes anodal utmost point ear and negative pole utmost point ear, anodal utmost point ear with negative pole utmost point ear all is located the circumference side of aluminum-shell battery.

Alternatively, an end surface of an end portion of the case in the axial direction is provided with a liquid pouring port and a sealing sheet that covers the liquid pouring port and is sealingly connected to the case.

Optionally, an end surface of the first portion is provided with a first groove, an end surface of the second portion is provided with a second groove, and the tab is located between the first groove and the second groove.

According to another aspect of the present invention, there is provided a method for manufacturing the aluminum-can battery of any one of the above aspects, comprising the steps of:

disposing an adhesive material on an end surface of the first portion of the housing;

an adhesive material is also arranged on the end face of the second part of the shell;

correspondingly placing the first and second portions provided with the adhesive material relative to the cells with the tabs of the cells located therebetween, the tabs being provided with tab adhesive therearound; and

and carrying out hot-pressing treatment on the first part and the second part with the adhesive materials and the tabs with the tab adhesives to form adhesive layers, wherein the parts of the first part, the second part and the tabs adjacent to each other are hermetically connected through the adhesive layers.

Optionally, a first adhesive is coated on the end face of the first part of the shell, and then a first adhesive film is connected to the first part through the first adhesive; and coating a second adhesive on the end face of the second part of the shell, and then connecting a second adhesive film to the second part through the second adhesive.

Optionally, performing a hot pressing process on the first adhesive film and the first part attached to the first adhesive to connect the first adhesive film to the first part; and performing hot-pressing treatment on the second adhesive film attached to the second adhesive and the second part to connect the second adhesive film to the second part.

Optionally, during the hot pressing process, heat and then pressure are applied, or heat and pressure are applied simultaneously.

Optionally, in the hot pressing process, the pressure is controlled to be 0.2-0.8 MPa, the temperature is controlled to be 170-210 ℃, and the time of the hot pressing process is 1-4 s.

Optionally, hermetically welding a cover plate of the housing constituting the first and second portions to a case main body of the housing; and/or

The pouring port of the case is covered with a flap, and the flap is sealingly welded to the case.

According to the aluminum-can battery and the method for manufacturing the same of the present invention, the tab is connected to the case not by means of only the tab paste but by means of the paste layer formed by hot pressing; the shell comprises a first part and a second part, so that the glue layer can be formed in a hot pressing mode; the glue layer formed by hot pressing between the lug and the shell can be connected together more firmly and reliably, the sealing effect between the lug and the shell is good, the phenomena of glue opening and the like can not occur, and the safety performance of the battery is improved. Therefore, the aluminum-shell battery provided by the invention has the advantages of high safety performance, certain mechanical strength, low expansion performance and the like.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In the drawings:

fig. 1 is a plan view of an aluminum-can battery according to a first embodiment of the invention;

fig. 2 is a side view of the aluminum-can battery shown in fig. 1;

fig. 3 is a plan view of an aluminum-can battery according to a second embodiment of the invention;

fig. 4 is a side view of an aluminum-can battery according to a third embodiment of the invention;

fig. 5 is a plan view of an aluminum-can battery according to a fourth embodiment of the invention;

fig. 6 is a side view of the aluminum-can battery shown in fig. 5;

fig. 7 is another side view of the aluminum can cell shown in fig. 5.

Description of reference numerals:

110 casing of 100 aluminium shell battery

111 first part 112 second part

113 cover plate 114 case main body

115 first recess 116 second recess

120 electric core 121 utmost point ear

122 positive pole lug, 123 negative pole lug

130 adhesive layer 131 first adhesive

132 first adhesive film 133 second adhesive

134 second adhesive film 135 tab adhesive part

136 transverse portion 137 longitudinal portion

151 pour liquid mouth 152 closing piece

200 aluminum-shell battery 300 aluminum-shell battery

314 upper half shell 315 lower half shell

400 aluminum shell battery

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

In the following description, a detailed description will be given in order to thoroughly understand the present invention. It is apparent that the implementation of the embodiments of the invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for purposes of illustration only and are not limiting.

Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.

First embodiment

Fig. 1 and 2 show an aluminum-can battery 100 according to a first embodiment of the present invention, the overall external shape of the aluminum-can battery 100 being a cylinder. In other words, the aluminum-casing battery 100 of the first embodiment is a cylindrical battery.

As shown in fig. 1 and 2, the aluminum-case battery 100 may include a case 110 and a battery cell 120. The housing 110 is made of aluminum. The battery cell 120 may be disposed in the casing 110, and the battery cell 120 may be provided with a tab 121. The tab 121 can extend from the case 110 to serve as a positive/negative electrode output of the aluminum-casing battery 100. The tabs 121 include a positive tab 122 and a negative tab 123. The positive electrode tab 122 and the negative electrode tab 123 are located on the same side in the axial direction of the aluminum-casing battery 100. Specifically, the housing 110 includes a first portion 111 and a second portion 112 disposed at an interval. A tab 121 can be located between the first portion 111 and the second portion 112.

In the present embodiment, the case 110 may include a cover plate 113 and a case main body 114. The cover plate 113 is connected to an end portion of the case main body 114 in the axial direction to cover an end opening of the case main body 114 at the end portion. The first part 111 is formed as a half of the cover plate 113, i.e. as a first cover half. The second part 112 is formed as the other half of the cover plate 113, i.e. the second cover half. In other words, the cover plate 113 is composed of two parts disposed at an interval. The thickness of the cover plate 113 may be 1.0 to 1.5 mm.

In the illustrated embodiment, the overall exterior shape of the housing 110 is a cylinder. The first portion 111 of the cover plate 113 is substantially semicircular, i.e. a semicircular half cover. The second portion 112 of the cover plate 113 is also generally semicircular, i.e., a semicircular half cover. The entirety of the cover plate 113 can be considered as a full circle. The cover plate 113 is disposed on the top of the case main body 114. The case main body 114 is formed in a cylindrical shape having a housing space and a closed bottom. The battery cell 120 is located in the accommodating space.

The first portion 111, the second portion 112 and the portions of the tab 121 adjacent to each other can be hermetically connected by a glue layer 130 formed by heat pressing. In this embodiment, the tab 121 and the case 110 can be firmly and reliably connected together through the adhesive layer 130 formed by hot pressing, and the sealing effect between the two is good, so that the phenomena of adhesive separation and the like do not occur, which improves the safety performance of the battery. Therefore, the aluminum-can battery 100 of the present invention has high safety, and can have advantages of a certain mechanical strength, low expansion performance, and the like.

The adhesive layer 130 may be made of an adhesive material including an adhesive and an adhesive film. The adhesive films may be attached to the end surfaces of the first and second portions 111 and 112, respectively, using an adhesive. For example, an adhesive is first applied to the end surfaces of the first and second portions 111 and 112, and then an adhesive film is attached to the adhesive. The thickness of the binder may be 5 to 50 μm. The thickness of the adhesive film can be 50-200 μm. As one example, the binder may be a hot melt adhesive material such as modified polypropylene. The adhesive and the adhesive film may be different materials. The adhesive film may be made of a hot melt adhesive material such as a polypropylene material, and as an example, the adhesive film may be a cast polypropylene film.

The glue material may also include tab glue 134. The tab glue 134 is disposed around the tab 121. The tab adhesive 134 is made of a hot melt adhesive material, but may be a different material than the adhesive film. As an example, the tab compound 134 is in a band shape, and generally includes a three-layer structure, and a single layer thickness may be about 0.1 mm. The tab glue 134 may be co-extruded with three layers of modified polypropylene. The first layer is a low-melting-point polypropylene layer, the melting point of the polypropylene layer is generally 130-150 ℃, and the polypropylene layer is easy to fuse and bond with the adhesive film; the middle layer is a high-melting-point polypropylene layer and can play a role of supporting a framework, so that the packaging thickness is ensured, and short circuit is prevented; the third layer is also a low-melting-point polypropylene layer, which is beneficial to bonding with the tab 121.

The end face of the first part 111 is provided with a first groove 115 and the end face of the second part 112 is provided with a second groove 116. The tab 121 is located between the first groove 115 and the second groove 116. The tab glue portion formed by the tab glue 134 is partially located in the first groove 115 and the second groove 116. This makes it possible to reduce the size of the case 110, and in the present embodiment, the size of the cover plate 113 is reduced, so that the entire case 110 can be reduced in size.

The surface of the glue layer 130 is substantially flush with the surface of the housing 110, and specifically, in the present embodiment, the surface of the glue layer 130 is substantially flush with the surface of the cover plate 113. The tab glue part formed by the tab glue 134 protrudes out of the surface of the glue layer 130, and the protruding size can be 1.0-3.0 mm. The tab compound portion formed of the tab compound 134 includes a lateral portion 136 extending in a direction parallel to the extending direction of the end face, a longitudinal portion 137 protruding toward the first groove 115 and protruding toward the second groove 116, the longitudinal portion 137 protruding in the lateral portion 136 in a direction perpendicular to the extending direction of the end face. The extension of the lateral portion 136 in a direction parallel to the extension direction of the end face may be 0.5 to 2 mm.

An end surface of an end portion of the case 110 in the axial direction may be provided with a pouring port 151 and a sealing piece 152. The sealing sheet 152 covers the pouring outlet 151 and is sealingly connected to the casing 110, in particular to the lid 113. The thickness of the sealing sheet 152 may be 0.1 to 0.3 mm. The pouring outlet 151 corresponds to the shape of the sealing piece 152. For example, the pouring outlet 151 is circular, and the sealing piece 152 is also circular. The diameter of the liquid inlet 151 may be 1.0 to 5.0 mm. The sealing sheet 152 may have a diameter of 2.0 to 6.0 mm. The sealing sheet 152 may be coupled to the case 110 by laser welding.

The present invention also provides a method of making the aluminum-can battery 100. The method comprises the following steps:

providing a glue material on an end face of the first portion 111 of the housing 110;

an adhesive material is also disposed on the end face of the second portion 112 of the housing 110;

the first and second portions 111, 112 provided with the adhesive material are correspondingly positioned relative to the cell 120, with the tab 121 of the cell 120 located between the first and second portions 111, 112, the tab 121 being provided with the tab adhesive 134 therearound; and

the first and second portions 111 and 112 with the adhesive material and the tab 121 with the tab adhesive 134 are subjected to a heat and pressure process to form an adhesive layer 130, and the portions of the first and second portions 111 and 112 and the tab 121 adjacent to each other are hermetically connected by the adhesive layer 130.

The end faces of the first and second portions 111, 112 are surface treated to remove metallic impurities and the formed aluminum oxide layer on the surfaces prior to disposing the glue material. For example, the end face may be treated with a chemical agent.

The adhesive material may include an adhesive and a glue film. In the step of disposing the adhesive material, a first adhesive 131 may be coated on an end surface of the first portion 111 of the housing 110, and then the first adhesive film 132 may be attached to the first portion 111 by the first adhesive 131; and coating a second adhesive 133 on an end surface of the second portion 112 of the housing 110, and then attaching a second adhesive film 134 to the second portion 112 through the second adhesive 133. The first binder 131 may be the same as the second binder 133, for example, both modified polypropylenes. The first adhesive film 132 may be the same as the second adhesive film 134, and is made of polypropylene, for example. Specifically, the first adhesive film 132 and the second adhesive film 134 may be cast polypropylene films. Of course, if desired and/or desired, the first adhesive 131 may be different from the second adhesive 133, and the first adhesive film 132 and the second adhesive film 134 may also be different.

As an example, the adhesive film may be coupled to the housing 110 in a manner of: performing a thermocompression process on the first adhesive film 132 attached to the first adhesive 131 and the first part 111 to connect the first adhesive film 132 to the first part 111; the second adhesive film 134 attached to the second adhesive 133 and the second part 112 are subjected to a heat press process to connect the second adhesive film 134 to the second part 112. The hot pressing treatment used in the adhesive film connecting process can ensure that the adhesive between the adhesive film and the shell 110 is firmer and more reliable and is not easy to degum; wherein the pressure is controlled to be 0.2-2.0 MPa, and the temperature is controlled to be about 150 ℃. Alternatively, the autoclave treatment is performed under a condition of slowly raising the temperature and pressure.

Heating the first and second portions 111 and 112 during the attachment of the adhesive film to the housing 110 to conduct heat to the adhesive and the adhesive film by thermal conduction; the first portion 111 and the first adhesive film 132 are pressurized to tightly dispose the adhesive material on the first portion 111, and the second portion 112 and the second adhesive film 134 are pressurized to tightly dispose the adhesive material on the second portion 112.

The method may further include a step of preparing the battery cell 120. The positive electrode sheet, the negative electrode sheet and the separator are wound or laminated, and the positive electrode tab 122 is welded to the positive electrode sheet and the negative electrode tab 123 is welded to the negative electrode sheet.

The hot press treatment in the present embodiment may be performed by heating and then pressurizing, or by heating and pressurizing at the same time. In the hot pressing process, the pressure can be controlled to be 0.2-0.8 MPa, the temperature is controlled to be 170-210 ℃, and the time of the hot pressing is 1-4 s. For example, specific examples may be: the first and second portions 111, 112 with the adhesive material are secured using tooling, and then the first and second portions 111, 112 with the adhesive material are heated to conduct heat to the adhesive and adhesive film via thermal conduction. Optionally, the tab 121 is heated to conduct heat to the tab compound by thermal conduction. The heating temperature can be 170-210 ℃, and the heating time can be 3-30 s. The tab 121 of the cell 120 is interposed between the first portion 111 and the second portion 112. The first and second portions 111, 112 of the adhesive material and the tab 121 with the tab adhesive 134 are then pressed. Specifically, a pressure is applied to the first portion 111 toward the second portion 112, and correspondingly, a pressure is applied to the second portion 112 toward the first portion 111. The pressurizing pressure can be 0.2-0.8 MPa, and the time of the hot pressing treatment is 1-4 s. The glue layer 130 formed after pressurization can realize the sealing of the casing 110 at the tab 121.

In the illustrated embodiment, the cap plate 113 can be hermetically connected to the tab 121 after the hot pressing process. The method may further include an assembly step of placing the battery cell 120 in the case main body 114, with the cover plate 113 covering the end opening of the case main body 114; the cover plate 113 is then hermetically welded to the case main body 114. The cover plate 113 may be coupled to the case main body 114 by laser welding.

Further, the method may further comprise the steps of:

baking the assembled battery core 120 and the shell 110, and injecting electrolyte from the injection port 151;

covering the pouring outlet 151 of the case 110 with a sealing sheet 152, and hermetically welding the sealing sheet 152 to the case 110; and

the battery is subjected to formation and capacity grading treatment, and finally the aluminum-can battery 100 is obtained.

It is to be understood that in describing the first embodiment, the first and second portions are referred to as the cover plate 113.

Second embodiment

Fig. 3 shows an aluminum-can battery 200 of a second embodiment. The aluminum-can battery 200 of the second embodiment has substantially the same structure and/or configuration as the aluminum-can battery 100 of the first embodiment, except for the outer shape of the aluminum-can battery. Accordingly, elements having substantially the same function as in the first embodiment will be numbered identically herein and will not be described and/or illustrated in detail for the sake of brevity.

The overall external shape of the aluminum-casing battery 200 of the second embodiment is a rectangular parallelepiped. In other words, the aluminum-casing battery 100 of the second embodiment is a rectangular battery. Specifically, the overall outer shape of the housing 110 is a cylinder. The case 110 includes a cover plate 113 and a case main body 114. A positive electrode tab 122 and a negative electrode tab 123 protrude from the cap plate 113. The first portion 111 of the cover plate 113 is substantially rectangular, i.e. a rectangular half cover. The second portion 112 of the cover plate 113 is also substantially rectangular, i.e. a rectangular half cover. The cover plate 113 may be seen as rectangular in its entirety.

Third embodiment

Fig. 4 shows an aluminum-can battery 300 of a third embodiment. The aluminum-can battery 300 of the third embodiment has substantially the same structure and/or construction as the aluminum-can battery 100 of the first embodiment, except for the positions of the tabs 121 and the structure of the case 110. Accordingly, elements having substantially the same function as in the first embodiment will be numbered identically herein and will not be described and/or illustrated in detail for the sake of brevity.

The case 110 includes two cover plates 113 and a case main body 114. The two cover plates 113 are respectively located at the ends of the case main body 114 in the axial direction. Further, one cover plate 113 is positioned at the top of the case main body 114, and one cover plate 113 is positioned at the bottom of the case main body 114. A positive electrode tab 122 and a negative electrode tab 123 can be respectively protruded from the two cover plates 113. The positive electrode tab 122 and the negative electrode tab 123 are located on both sides of the aluminum-casing battery 100 in the axial direction. In this embodiment, the two cover plates 113 each include a first portion 111 and a second portion 112.

Fourth embodiment

Fig. 5 to 7 show an aluminum-can battery 400 of a fourth embodiment. The aluminum-can battery 400 of the fourth embodiment has substantially the same structure and/or construction as the aluminum-can battery 100 of the first embodiment, except for the location of the tabs 121 and the structure of the case 110. Accordingly, elements having substantially the same function as in the first embodiment will be numbered identically herein and will not be described and/or illustrated in detail for the sake of brevity.

The housing 110 includes an upper half 314 constituting the first part 111 and a lower half 315 constituting the second part 112. The upper half shell 314 is located below the lower half shell 315. The upper half shell 314 and the lower half shell 315 each have a receiving space to receive the cell 120. The positive electrode tab 122 and the negative electrode tab 123 are both located on the circumferential side of the aluminum-casing battery 100. As shown in fig. 5 and 6, the cathode tab 122 and the anode tab 123 are located at opposite sides of the case 110, and may be symmetrically disposed with respect to the case 110. Of course, the positions of the positive and negative electrode tabs 122 and 123 may be arbitrarily set as desired and/or desired.

The order of the steps of the method according to the embodiments of the present invention may be adjusted, combined or deleted according to actual needs. The flows described in all the preferred embodiments described above are only examples. Unless an adverse effect occurs, various processing operations may be performed in a different order from the order of the above-described flow. The above-mentioned steps of the flow can be added, combined or deleted according to the actual requirement.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.