Battery and housing arrangement of the same

Abstract

Housing arrangement of a battery, characterized in that it comprises: a top cover provided with a mounting hole, the mounting hole penetrating the top cover along the thickness direction of the top cover; an electrode element that is inserted into the mounting hole, the electrode element having a terminal post part, a connecting part, and a fixing part, one end of the terminal post part being connected to one end of the connecting part, and the other end of the connecting part being provided with a groove, the fixing part being arranged at an opening of the groove, and the fixing part being arranged around the connecting part, the fixing part being arranged on one side of the plate surface of the top cover, and the fixing part being formed to be electrically connected to a tab, the terminal post part, the connecting part and the fixing part being integrally connected, and the fixing part being arranged to protrude in an extending direction of the top cover; a connecting plate arranged on the other side of the plate surface of the upper cover, the connecting plate being arranged around the outer peripheral side of the terminal post part, the connecting plate being welded to the outer peripheral side of the terminal post part to form a welding part, the connecting plate being configured to be electrically connected to a bus bar, the respective projections of the connecting plate and the fixing part on the upper cover partially overlap each other, and the upper cover being arranged between the connecting plate and the fixing part; where the thickness of the groove wall of the groove is “t” mm, the depth of the weldment is “h1” mm, where: 0.25 ≤ t / h1≤ 3.

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of batteries, and more particularly to a battery and a top cover thereof. BACKGROUND

[0002] Today's batteries are equipped with an electrode element connected to a busbar and a cell tab inside the battery to achieve internal and external overcurrent protection. However, batteries currently suffer from uneven internal and external overcurrent, which can quickly lead to local overheating. The insulating and sealing elements surrounding the electrode element will soften as a result of the overheating, leading to insulation and sealing failure. SUMMARY OF THE INVENTION

[0003] The present invention is to provide a battery and a housing assembly thereof which can compensate for the internal and external overcurrent of the battery and prevent insulation or sealing failure of the insulation members and sealing members.

[0004] To achieve the above object, the present application provides a housing assembly of a battery comprising: a top cover provided with a mounting hole, the mounting hole penetrating the top cover along the thickness direction of the top cover; an electrode element that is inserted into the mounting hole, wherein the electrode element has a terminal post part, a connecting part and a fixing part, one end of the terminal post part is connected to one end of the connecting part and the other end of the connecting part is provided with a groove, the fixing part is arranged at an opening of the groove and the fixing part is arranged around the connecting part, the fixing part is arranged on one side of the plate surface of the upper cover, and the fixing part is formed to be electrically connected with a tab, the terminal post part, the connecting part and the fixing part are integrally connected, and the fixing part is arranged to protrude in an extending direction of the upper cover; a connecting plate arranged on the other side of the plate surface of the upper cover, the connecting plate being arranged around the outer peripheral side of the terminal post part, the connecting plate being welded to the outer peripheral side of the terminal post part to form a welding part, the connecting plate being configured to be electrically connected to a bus bar, the respective projections of the connecting plate and the fixing part on the upper cover partially overlap each other, and the upper cover being arranged between the connecting plate and the fixing part; where the thickness of the groove wall of the groove is “t” mm, the depth of the weldment is “h1” mm, satisfying: 0.25≤ t / h1≤ 3.

[0005] The present invention further provides a battery having the housing arrangement described above.

[0006] The battery and its housing assembly according to the embodiment of the present invention have the following advantageous effects over the prior art: The battery casing assembly of the present invention includes a top cover, an electrode member, and a connecting plate. The electrode member includes a terminal post portion and a connecting portion connected to each other. The connecting portion is provided with a groove, and a fixing portion is disposed at the opening of the groove. The connecting plate is welded to the terminal post portion to form a welded portion. The connecting plate is configured to be connected to the bus bar, and the connecting plate is configured to be connected to the tab. By adjusting the depth of the welded portion and the thickness of the connecting portion at a position corresponding to the groove, the overcurrent at these two components can be balanced, so that the external overcurrent and the internal overcurrent are balanced.This prevents the occurrence of local overheating and prevents insulation or sealing failure of the insulating element and the sealing element.

[0007] The battery of the present invention has the above-described casing structure, which can balance the external overcurrent and internal overcurrent, avoid the occurrence of local overheating, and prevent the insulation or sealing failure of the insulation member and the sealing member. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram of the structure of the housing assembly according to an embodiment of the present invention. Fig. 2 is a sectional view of Fig. 1 towards “AA”, Fig. Figure 3 is an enlarged schematic representation of part “B” of Fig. 2. Fig. 4 is a view of the disassembled housing assembly of Fig. 1. Fig. 5 is a schematic diagram of the structure of the electrode element according to an embodiment of the present invention. Fig. 6 is a schematic diagram of the structure of the electrode element from another angle according to an embodiment of the present invention. Fig. 7 is a schematic diagram of the structure of another assembly state of the connecting plate of Fig. 3. Fig. Figure 8 is a schematic representation of the cell and housing assembly according to an embodiment of the present invention. Fig. Figure 9 is an enlarged schematic representation of part “C” in Fig. 8. Fig. 10 is a schematic representation of the structure of Fig. 8 from a different angle. In the figures:

[0008] 1. Top cover; 2. Electrode element; 3. Connecting plate; 4. Insulating element; 5. Sealing element; 6. Cell; 7. Busbar; 21. Terminal post part; 22. Connecting part; 23. Fixing part; 24. Groove; 31. Welding part; 33. Projecting part; 41. Tab. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0009] Embodiments of the present invention will now be described in detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0010] It should be noted that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like indicate positions and positional relationships based on the positions and positional relationships shown in the drawings. They are used only to better describe the present invention and simplify the description, without indicating or implying that the device or element referred to must have a particular orientation, be constructed, and operate in a particular orientation, and therefore cannot be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0011] It should be noted that in the description of the present invention, unless clearly stated and limited otherwise, the terms "installed," "interconnected," and "connected" should be understood in a broad sense, and may include a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; or a connection between two elements. One of ordinary skill in the art can understand the specific meanings of the above terms in the present invention depending on particular circumstances.

[0012] In addition, “a plurality of” in the description of the present invention means two or more.

[0013] One skilled in the art may understand the particular meanings of the above terms in the present invention depending on particular circumstances.

[0014] It is on the Fig. 1 and Fig. 4. A top cover assembly of a battery according to a preferred embodiment of the present invention includes: a top cover 1, an electrode element 2, and a connecting plate 3.

[0015] The top cover 1 is provided with a mounting hole, and the mounting hole penetrates the top cover 1 along the thickness direction of the top cover 1.

[0016] The top cover 1 refers to a top cover 1 of a battery. The battery further comprises a housing in which a cell 6 is arranged, and the top cover 1 is placed on the housing.

[0017] It is on the Fig. 5 and Fig. 6. The electrode element 2 is inserted into the mounting hole. The electrode element 2 includes a terminal post part 21, a connecting part 22, and a fixing part 23. One end of the terminal post part 21 is connected to one end of the connecting part 22, and the other end of the connecting part 22 is provided with a groove 24. The fixing part 23 is arranged at an opening of the groove 24, and the fixing part 23 is arranged around the connecting part 22. The fixing part 23 is arranged on one side of the plate surface of the top cover 1, and the fixing part 23 is formed to be electrically connected to the tab 41. The terminal post part 21, the connecting part 22, and the fixing part 23 are integrally connected. The fixing part is arranged to protrude in an extending direction of the top cover.

[0018] The electrode element 2 is configured to electrically connect the cell 6 to an external device. The electrode element 2 may be a positive electrode element 2 and a negative electrode element 2 with different polarities. Each battery may have multiple positive electrode elements 2 or multiple negative electrode elements 2. In the present embodiment, one positive electrode element 2 and one negative electrode element 2 are arranged. In the specific implementation of production, the number and position of the electrode elements 2 can be adjusted as needed.

[0019] The extension direction of the upper cover 1 may refer to the length direction of the upper cover 1 or to the width direction of the upper cover 1. The upper cover 1 extends in a plane, and the fastening part 23 extends in this plane such that the fastening part 23 is arranged in a protruding manner on the entire electrode element 2.

[0020] The fastening part 23 is configured to be electrically connected to the tab 41, and the current flows through the fastening part 23 to the electrode element 2 to achieve an internal overcurrent. Specifically, the current flows from the fastening part 23 to the connecting part 22 and then to the terminal post part 21. The fastening part 23 is further configured to be indirectly connected to the top cover 1.

[0021] The connecting plate 3 is arranged on the other side of the plate surface of the top cover 1, and the connecting plate 3 is arranged around the outer peripheral side of the terminal post part 21. The connecting plate 3 is welded to the outer peripheral side of the terminal post part 21 to form a welding part 31. The connecting plate 3 is further configured to be electrically connected to the busbar 7. The respective projections of the connecting plate 3 and the fixing part 23 on the top cover 1 partially overlap each other, and the top cover 1 is arranged between the connecting plate 3 and the fixing part 23.

[0022] After the electrode element 2 has penetrated the top cover 1, the connecting plate 3 must provide support for the electrode element 2.

[0023] The weld portion 31 is a portion formed after the electrode element 2 and the connecting plate 3 are welded and the molten pool has cooled. One portion of the weld portion 31 is located on the connecting plate 3, and another portion is located on the electrode element 2.

[0024] The connecting plate 3 is electrically connected to the busbar 7 to achieve an external overcurrent. The current at the electrode element 2 flows, in particular, via the welding part 31 to the connecting plate 3 and then from the connecting plate 3 to the busbar 7.

[0025] The groove 24 is arranged on the terminal post part 21, which can reduce the weight of the electrode element 2, thus ensuring the connection strength between the connection plate 3 and the terminal post part 21. This can avoid the risk of the welding part 31 between the connection plate 3 and the terminal post part 21 being torn and the connection failure due to the excessive connection strength between the fixing part 23 and the tab 41.

[0026] The fixing part 23 is protrudingly disposed on the entire electrode element 2, and the upper cover 1 is arranged between the connecting plate 3 and the fixing part 23. With such a structure, the upper cover 1 is located between the fixing part 23 and the connecting plate 3, which can limit the relative position between the entire electrode element 2 and the upper cover 1.

[0027] In the present embodiment, as the Fig. 2 and Fig. 3, the thickness of the connecting part 22 at a position corresponding to the groove 24 is “t” mm, that is, the thickness of the groove wall of the groove 24 is “t” mm, and the depth of the weld part 31 is “h1” mm, satisfying: 0.25 ≤ t / h1 ≤ 3. The value of “t / h1” may preferably be 0.5, 0.8, 1, 1.3, 1.6, 2, 2.1, 2.4, 2.8, etc.

[0028] In the present embodiment, the groove wall of the groove 24 is parallel to the thickness direction of the top cover 1, the opening of the groove 24 faces the direction where the cell 6 is located, and the opening is open along the thickness direction of the top cover 1.

[0029] Typically, several batteries are combined into a battery pack for use, and the corresponding batteries are connected together via a busbar to form a battery assembly. The busbar collects the current from each battery and exports the current output from the battery assembly.

[0030] If the external overcurrent and the internal overcurrent are unbalanced, the connection area between the connection plate 3 and the electrode element 2 will locally overheat, resulting in softening of the insulating element 4 due to heat and insulation failure. For internal overcurrent, the position of the connecting part 22 corresponding to the groove 24 is the weak point of the overcurrent. For external overcurrent, the welding part 31 is the weak point of the overcurrent. Therefore, if the above value range is satisfied, the overcurrent balance can be achieved at the weak points of the internal and external overcurrent. If the value of "t / h1" is too low, the internal overcurrent will be too small to meet the overall overcurrent requirement of the battery.If the value of “t / h1” is too high, the overcurrent of the welding part 31 is insufficient and local heat generation at the welding mark may easily occur, resulting in insulation or sealing failure of the insulating element 4 and the sealing element 5.

[0031] When measuring “h1” and “t”, a general length measuring tool such as a caliper can be used.

[0032] Specifically, for "h1," the welded part 31 may be cut open, and the distance between the surface of the welded part 31 at the cross-section and the deepest portion of the welded part 31 is measured. Several measurements are taken, and the average value is used to determine the depth "h1" mm of the welded part 31.

[0033] For "t," the connecting part 22 can be cut open, and the thickness of the connecting part 22 is measured at a position on the cross-section corresponding to the groove 24, ie, the sidewall thickness of the groove 24 is measured. Several measurements are taken, and the average value is used to determine the thickness "t" mm of the connecting part 22 at a position corresponding to the groove 24.

[0034] In some embodiments, the thickness "t" mm of the groove wall of the groove 24 further satisfies: 0.5 ≤ t ≤ 1.5. The value of "t" may preferably be 0.8, 1, 1.2, etc.

[0035] During internal overcurrent, the position of the connecting part 22 corresponding to the groove 24 is the weak point of the overcurrent. Maintaining the above-mentioned value range not only ensures that the internal overcurrent meets the overall overcurrent requirements of the battery, but also prevents imbalance with the external overcurrent.

[0036] In some embodiments, the depth “h1” of the weld part 31 further satisfies: 0.5 ≤ h1 ≤ 2. The value of “h1” may preferably be 0.7, 1, 1.2, 1.5, 1.8, etc.

[0037] During external overcurrent, the welding part 31 is the weak point of the overcurrent. Maintaining the above value range not only ensures that the internal overcurrent and external overcurrent are balanced, but also ensures that the external overcurrent meets the overall overcurrent requirements of the battery.

[0038] In some embodiments, the dimension of the connecting plate 3 in the thickness direction of the top cover 1 is "H" mm, that is, the thickness of the connecting plate 3 is "H" mm, satisfying: 0.16 ≤ h1 / H ≤ 1.33. The value of "h1 / H" may preferably be 0.18, 0.2, 0.5, 0.7, 1, 1.1, 1.3, etc.

[0039] If the above value range is maintained, the depth of the welding part 31 can be sufficient to ensure the external overcurrent, and it can also prevent excessive heat from being transferred to the insulating member 4 and the sealing member 5 to prevent insulation failure or sealing failure.

[0040] In addition, “H” also satisfies: 1.5 ≤ H ≤ 3. The value of “H” can preferably be 1.8, 1, 1.3, 1.6, 1.9, 2.2, 2.4, 2.8, etc.

[0041] When measuring “H”, a general length measuring tool such as a caliper can be used.

[0042] Specifically, the connecting plate 3 is taken, and the distance between the two plate surfaces of the connecting plate 3 is measured. Multiple measurements are taken, and the average value is used to determine the dimension "H" (mm) of the connecting plate 3 in the thickness direction of the top cover 1. In the present embodiment, "H" is also the thickness of the connecting plate 3.

[0043] In some embodiments, the distance between the edge of the welding part 31 located on the connecting plate 3 and the other edge located on the electrode element 2 is “w” mm, that is, the width of the welding part 31 is “w” mm, satisfying: 0.5 ≤ w ≤ 2. The value of “w” may preferably be 0.8, 0.9, 1.2, 1.5, 1.7, 1.9, etc.

[0044] If the above value range is maintained, not only can the connection strength between the connecting plate 3 and the terminal post part 21 be ensured, but also the depth of the welding part 31 can be prevented from being too deep.

[0045] When measuring “w”, a general length measuring tool, such as a caliper, can be used.

[0046] Specifically, for "w," the distance between the edge on the connecting plate 3 and the other edge on the terminal post part 21 is measured. Multiple measurements are taken, and the average value is used to determine the distance "w" between the edge of the weld part 31 on the connecting plate 3 and the other edge on the terminal post part 21. Since the weld part 31 is arranged around the terminal post part 21, "w" in the present embodiment is also the width of the weld part 31 as a weld seam.

[0047] In some embodiments, the connecting plate 3 is annular, and the distance between the outer circumference of the connecting plate 3 and the inner circumference of the connecting plate 3 is “L” mm, that is, the annular width of the connecting plate 3 is “L” mm, satisfying: 0.125 ≤ w / L ≤ 1. The value of “w / L” may preferably be 0.2, 0.4, 0.6, 0.9, etc.

[0048] By maintaining the above-mentioned value range while ensuring the connection strength between the connecting plate 3 and the electrode element 2, it is also possible to ensure that the distance between the welding part 31 and the insulating element 4 is large enough to prevent the insulating element 4 from softening due to heat and causing insulation failure.

[0049] In addition, “L” also satisfies: 2 ≤ L ≤ 4. The value of “L” can preferably be 2.3, 2.5, 2.7, 3, 3.2, 3.5, 3.9, etc.

[0050] When measuring “L”, a general length measuring tool such as a caliper can be used.

[0051] Specifically, for "L," the distance between the outer circumference and the inner circumference of the connecting plate 3 is measured. Multiple measurements are taken, and the average value is used to determine the distance "L" between the outer circumference of the connecting plate 3 and the inner circumference of the connecting plate 3. In the present embodiment, the connecting plate 3 is annular, and "L" is also the width of the connecting plate 3.

[0052] In some embodiments, a projection part 33 is arranged on the connecting plate 3, and the surface of the projection part 33 facing away from the top cover 1 is arranged on the side of the electrode element 2 facing away from the connecting plate 1.

[0053] In other words, and considering the perspective in Fig. 3, the upper surface of the projection part 33 is higher than the electrode element 2 to facilitate welding with the busbar.

[0054] It is here with reference to Fig. 7 It is worth mentioning that “H” denotes the thickness of the connecting plate without the projection part 33.

[0055] In some embodiments, the material of the terminal post portion 21 comprises aluminum, and the material of the connecting portion 22 comprises copper.

[0056] In the present embodiment, the terminal post portion 21 is an aluminum cylinder, and the connecting portion 22 and the fixing portion 23 are arranged integrally, that is, as a copper cylinder with a flanged edge. In other words, the electrode element 2 is a copper-aluminum composite electrode element 2.

[0057] The thickness "t" mm of the groove wall of the groove 24 and the depth "h1" mm of the weldment 31 also satisfy: 0.28 ≤ t / h1 ≤ 2.8. The value of "t / h1" can preferably be 0.3, 0.5, 0.8, 1, 1.3, 1.5, 1.8, 2, 2.3, 2.5, etc.

[0058] If the above-mentioned value range is maintained, good conductivity is achieved due to the high conductivity of copper, thus the thickness “t” of the position of the connecting part 22 corresponding to the groove 24 can be suitably reduced.

[0059] The dimension of the terminal post part 21 in the thickness direction of the upper cover 1 is “d” mm, and the dimension of the position of the connecting part 22 corresponding to the bottom of the groove 24 in the thickness direction of the upper cover 1 is “D” mm, satisfying: 1 ≤ d / D ≤ 4. The value of “d / D” may preferably be 1.3, 1.6, 1.9, 2, 2.3, 2.5, 2.7, 3, 3.2, 3.5, 3.9, etc.

[0060] Since the welding part 31 is located on the terminal post part 21, that is, the aluminum cylinder, in order to meet the overcurrent requirements, it is necessary to limit the dimensional range of the aluminum cylinder and the copper cylinder so that 1 ≤ d / D ≤ 4 is satisfied.

[0061] Furthermore, "d also satisfies: 2 ≤ d ≤ 4. The value of "d" can preferably be 2.3, 2.6, 2.9, 3.1, 3.3, 3.5, 3.8, etc.

[0062] “D” also satisfies: 1 ≤ D ≤ 2. The value of “D” can preferably be 1.2, 1.5, 1.6, 1.9, etc.

[0063] When measuring “d” and “D”, a general length measuring tool such as a ruler, tape measure, caliper and other measuring tools can be used.

[0064] Specifically, the electrode element 2 may be cut open, the distance between the two edges of the terminal post part 21 in the thickness direction of the top cover 1 is measured at the cross-section, and a plurality of measurements are performed and the average value is taken to determine the dimension "d" mm of the terminal post part 21 in the thickness direction of the top cover 1. The dimension of the connecting part 22 at the bottom of the groove 24 is measured at the cross-section in the thickness direction of the top cover 1, wherein a plurality of measurements are performed and the average value is taken to determine the dimension "D" mm of the connecting part 22 at the position corresponding to the bottom of the groove 24 in the thickness direction of the top cover 1.

[0065] With reference to the Fig. 8 to 10, the present embodiment further provides a battery having a housing and the top cover assembly described above.

[0066] The housing has an opening communicating with its own interior.

[0067] The top cover 1 of the housing assembly is arranged at the opening, the fixing part 23 of the housing assembly is arranged inside the housing, the connecting plate 3 of the housing assembly is arranged outside the housing, and the opening of the groove 24 of the housing assembly faces the inside of the housing.

[0068] The battery provided in this arrangement can balance the external overcurrent and the internal overcurrent, which can avoid the occurrence of local overheating and prevent the insulation or sealing failure of the insulating member 4 and the sealing member 5.

[0069] The battery also has a cell 6 arranged inside the housing. Cell 6 has a tab 41. The width of tab 41 is "a" mm, and the thickness of tab 41 is "b" mm.

[0070] The cell 6 is formed by winding or stacking a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode each have a region coated with active materials and a region not coated with active materials. The region not coated with active materials forms a tab 41. The positive electrode forms a positive tab 41, and the negative electrode forms a negative tab 41.

[0071] The connecting plate 3 is annular, and the annular width "L" mm and the thickness "H" mm of the connecting plate 3 satisfy: 0.01 ≤ (a*b) / (L*H) ≤ 0.4. The value of "(a*b) / (L*H)" can preferably be 0.1, 0.13, 0.15, 0.18, 0.2, 0.22, 0.24, 0.27, 0.3, 0.33, 0.36, 0.39, etc.

[0072] If the above range is maintained, the internal overcurrent and the external overcurrent can be further balanced, which can avoid connection failure due to the unbalanced connection strength of the connection between the tab 41 and the connection plate 3 and the electrode element 2.

[0073] In the present embodiment, “a” also satisfies: 30 ≤ a ≤ 60. The value of “a” may preferably be 34, 38, 42, 46, 49, 51, 56, 58, etc.

[0074] "b" also satisfies: 0.004 ≤ b ≤ 0.02. The value of "b" can preferably be 0.007, 0.01, 0.013, 0.016, 0.019, etc.

[0075] When measuring “a” and “b”, a general length measuring tool, such as a caliper, can be used.

[0076] For "a," in particular, the distance between the two edges of the tab 41 in the length direction of the top cover 1 is measured. Several measurements are taken, and the average value is used to determine the width a mm of the tab 41.

[0077] Specifically, for "b," the distance between the two surfaces of the tab 41 is measured in the thickness direction of the top cover 1. Several measurements are taken, and the average value is used to determine the thickness "b" mm of the tab 41.

[0078] The above is merely a preferred embodiment of the present invention. It should be understood that various improvements and substitutions may be made by those skilled in the art without departing from the technical principles of the present invention, and these improvements and substitutions are also considered to be within the scope of the present invention.

Claims

[1] Housing arrangement of a battery, characterized by , that it exhibits: a top cover which is provided with a mounting hole, wherein the mounting hole penetrates the top cover along the thickness direction of the top cover; an electrode element that is inserted into the mounting hole, the electrode element comprising a terminal post part, a connecting part and a fastening part, wherein one end of the terminal post part is connected to one end of the connecting part and the other end of the connecting part is provided with a groove, the fastening part being arranged at an opening of the groove and the fastening part being arranged around the connecting part, the fastening part being arranged on one side of the plate surface of the upper cover and the fastening part being configured to be electrically connected to a tab, the terminal post part, wherein the connecting part and the fastening part are integrally connected and the fastening part is arranged to project in one extension direction of the upper cover; a connecting plate arranged on the other side of the plate surface of the upper cover, wherein the connecting plate is arranged around the outer peripheral side of the terminal post part, the connecting plate is welded to the outer peripheral side of the terminal post part to form a welded part, the connecting plate is configured to be electrically connected to a busbar, the respective projections of the connecting plate and the fastening part on the upper cover partially overlap each other, and the upper cover is arranged between the connecting plate and the fastening part; where the thickness of the groove wall of the groove “t” is mm, the depth of the welded part “h1” is mm, where: 0.25 ≤ t / h1≤ 3. [2] Housing arrangement of a battery according to claim 1, characterized by , that the thickness “t” mm of the groove wall of the groove further satisfies: 0.5 ≤ t ≤ 1.

5. [3] Housing arrangement of a battery according to claim 1 or 2, characterized by , that the depth “h1” mm of the welded part further satisfies: 0.5 ≤ h1 ≤ 2. [4] Housing arrangement of a battery according to one of the preceding claims, characterized by , that the value of “t / h1” is 0.5, 0.8, 1, 1.3, 1.6, 2, 2.1, 2.4, or 2.

8. [5] Housing arrangement of a battery according to one of the preceding claims, characterized by , that the thickness of the connecting plate “H” is mm, where: 0.16 ≤ h1 / H ≤ 1.

33. [6] Housing arrangement of a battery according to claim 5, characterized by , that the value of “h1 / H” is 0.18, 0.2, 0.5, 0.7, 1, 1.1, or 1.

3. [7] Housing arrangement of a battery according to one of the preceding claims, characterized by, that the width of the weld part “w” is mm, where 0.5 ≤ w ≤ 2 is satisfied, where the width of the weld part is the distance between the edge of the weld part located at the connecting plate and the other edge located at the electrode element. [8] Housing arrangement of a battery according to claim 7, characterized by , that the value of “w” is 0.8, 0.9, 1.2, 1.5, 1.7, or 1.

9. [9] Housing arrangement of a battery according to claim 5, characterized by , that the connecting plate is ring-shaped, wherein the ring width of the connecting plate “L” is mm, where: 0.125 ≤ w / L ≤ 1. [10] Housing arrangement of a battery according to claim 9, characterized by , that the value of “w / L” is 0.2, 0.4, 0.6, or 0.

9. [11] Housing arrangement of a battery according to one of the preceding claims, characterized by, that a protruding part is arranged on the connecting plate and the surface of the protruding part facing away from one side of the upper cover is arranged on a side of the electrode element facing away from the connecting plate. [12] Housing arrangement of a battery according to one of the preceding claims, characterized by that the material of the terminal post part is aluminium and the material of the connecting part is copper. [13] Housing arrangement of a battery according to claim 12, characterized by that The electrode element is a copper-aluminum composite electrode element, wherein the terminal post part is an aluminum cylinder, and wherein the connecting part and The fastening part is arranged in one piece and forms a copper cylinder with a flanged edge. [14] Housing arrangement of a battery according to claim 12, characterized by, that the thickness “t” mm of the groove wall of the groove and the depth “h1” mm of the welded part further satisfy: 0.28 ≤ t / h1 ≤ 2.

8. [15] Housing arrangement of a battery according to claim 12, characterized by , that the dimension of the terminal post part in the thickness direction of the upper cover “d” is mm and the dimension of the connecting part at a position corresponding to the bottom of the groove in the thickness direction of the upper cover “D” is mm, where: 1 ≤ d / D ≤ 4. [16] Housing arrangement of a battery according to claim 15, characterized by , that the value of “d / D” is 1.3, 1.6, 1.9, 2, 2.3, 2.5, 2.7, 3, 3.2, 3.5, or 3.

9. [17] Battery, characterized by , that it exhibits: a housing which has an opening that communicates with its interior; a housing arrangement according to any one of claims 1 to 16, wherein the upper cover of the upper cover arrangement is covered at the opening, the fastening part of the housing arrangement is arranged inside the housing, the connecting plate of the housing arrangement is arranged outside the housing, and the opening of the groove of the housing arrangement faces the inside of the housing. [18] Battery according to claim 17, characterized by , that it exhibits: a cell which is arranged inside the housing, wherein the cell has a tab, the width of the tab “a” is mm and the thickness of the tab “b” is mm; wherein the connecting plate is ring-shaped, the ring width of the connecting plate “L” is mm and the thickness of the connecting plate “H” is mm, where: 0.01 ≤ (a*b) / (L*H) ≤ 0.4.

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