Battery shell structure and battery

Abstract

The utility model relates to the technical field of batteries, and discloses a battery shell structure and a battery, the battery shell structure comprises a shell body, the shell body is provided with two first wall plates which are oppositely arranged along the Y direction and two second wall plates which are oppositely arranged along the X direction, and the two first wall plates and the two second wall plates are sequentially connected end to end and enclose to form a shell inner cavity; the distance between the two second wall plates is larger than the distance between the two first wall plates. The reinforcing unit is arranged in the shell inner cavity, and the reinforcing unit abuts against the position between the two first wall plates. According to the battery shell structure provided by the utility model, the two first wall plates can be supported, so that the strength of the shell body is improved, the flatness of the two first wall plates is ensured, the condition of poor opening plane is avoided, and the assembly efficiency of the cover plate and the shell body is further ensured; meanwhile, an exhaust channel in the battery can be improved, channel deformation is avoided, gas circulation in the battery is guaranteed, and safety performance is improved.

Description

Technical Field

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

[0002] One of the main technical development directions of the current power battery industry is to de-modularize, which directly arranges multiple cells in the box without assembling multiple single cells into battery modules, thus simplifying the structure and assembly process of the battery pack. De-modularization can reduce the consumption of serial connection between modules, improve the space utilization and energy density of the battery pack, and thus improve the range of electric vehicles.

[0003] Taking blade batteries as an example, when assembling blade batteries, multiple blade batteries need to be stacked in parallel, which places high demands on the strength of the blade batteries themselves. Blade batteries generally include an internal battery structure and an external battery structure. The internal battery structure mainly includes a pole group, and the external battery structure mainly includes a cover plate and a shell. The shell provides a space for the pole group, and the cover plate and the shell are welded together to form a closed space, thereby forming a complete battery structure. In the molding process of the shell, laser welding is usually used.

[0004] However, in pursuit of lightweight, the wall thickness of the battery cell shell is often made thinner, which results in lower shell strength, easily leading to shell deformation, poor shell opening surface, and other problems, seriously affecting the assembly efficiency of the cover and shell. The uneven shell will also affect the gas passage inside the battery, making it easy to exhaust gas during heat spread, posing a safety hazard. Utility Model Content

[0005] In view of this, the utility model provides a battery shell structure and a battery to solve the problem that the shell is easily deformed due to the thin shell wall thickness, which affects the assembly efficiency and even easily blocks the gas passage.

[0006] In a first aspect, the utility model provides a battery housing structure, comprising:

[0007] The shell body comprises two first wall plates arranged opposite to each other in the Y direction, and two second wall plates arranged opposite to each other in the X direction, wherein the two first wall plates and the two second wall plates are connected end to end in sequence and enclosed to form a shell inner cavity; wherein the spacing between the two second wall plates is greater than the spacing between the two first wall plates;

[0008] The reinforcing unit is arranged in the inner cavity of the shell, and the reinforcing unit abuts between the two first wall plates.

[0009] Beneficial effects: The battery shell structure provided by the utility model, since the spacing between the two second wall panels is greater than the spacing between the two first wall panels, by arranging a reinforcing unit in the inner cavity of the shell and making the reinforcing unit abut between the two first wall panels, it is possible to form support for the two first wall panels, so as to improve the strength of the shell body, ensure the flatness of the two first wall panels, avoid the occurrence of poor opening planes, and thus ensure the assembly efficiency of the cover plate and the shell body; at the same time, it can improve the internal exhaust channel of the battery, avoid channel deformation, ensure the internal gas circulation of the battery, and improve safety performance.

[0010] In an optional embodiment, the plane where the first wall plate is located and the plane where the second wall plate is located are both parallel to the Z direction, and the Z direction is perpendicular to the X direction and the Y direction at the same time;

[0011] The extension direction of the reinforcing unit is parallel to the Z direction, and the extension length of the reinforcing unit is not shorter than 80% of the extension length of the first wall plate.

[0012] Beneficial effect: By making the extension direction of the reinforcing unit parallel to the Z direction and making the extension length of the reinforcing unit not shorter than 80% of the extension length of the first wall panel, it is possible to ensure that the reinforcing unit has sufficient support for the first wall panel and ensure structural strength.

[0013] In an optional embodiment, the dimension of the reinforcing unit along the Y direction is a, wherein a satisfies: 12 mm ≤ a ≤ 20 mm;

[0014] The dimension of the reinforcing unit along the X direction is b, wherein b satisfies: 5 mm ≤ b ≤ 10 mm.

[0015] Beneficial effect: By limiting the lower limit of the value of the dimension b of the reinforcing unit along the X direction, it is possible to avoid a smaller reinforcing effect caused by a smaller size of the reinforcing unit; and by limiting the upper limit of the value of the dimension b of the reinforcing unit along the X direction, it is possible to avoid the reinforcing unit occupying a larger space inside the shell body, thereby avoiding affecting the internal energy space of the battery.

[0016] In an optional embodiment, at least one first through groove is formed through the reinforcing unit, and an extension direction of the first through groove is parallel to an extension direction of the reinforcing unit;

[0017] The dimension of the first through groove along the X direction is d, wherein d satisfies: 3mm≤d≤8mm.

[0018] Beneficial effect: The first through groove formed through the inside of the reinforcing unit can form a through hole gap, which is helpful for exhausting the inside of the battery, and can form an exhaust gap between the electrode group and the shell body, thereby improving the gas circulation inside the battery.

[0019] In an optional embodiment, the reinforcing unit is provided with a plurality of first through grooves in parallel along the Y direction, and the size of each first through groove along the Y direction is c, wherein c satisfies: 1 mm ≤ c ≤ 5 mm;

[0020] The interval between two adjacent first through grooves along the Y direction is e, where e satisfies: e≥1 mm.

[0021] Beneficial effect: By providing a plurality of first through grooves in parallel along the Y direction on the reinforcing unit, on the one hand, the weight of the battery shell structure can be reduced, and on the other hand, the number of through-hole gaps can be ensured, which is conducive to the internal exhaust of the battery, and sufficient exhaust gaps can be formed between the pole group and the shell body, thereby improving the internal gas circulation of the battery.

[0022] In an optional embodiment, the reinforcing unit is further formed with at least one second through-groove along the X direction, and the second through-groove is arranged to intersect with at least one first through-groove;

[0023] The dimension of the second through groove along the Y direction is n, wherein n satisfies: 3 mm ≤ n ≤ 8 mm;

[0024] The dimension of the second through groove along the Z direction is m, wherein m satisfies: 5 mm ≤ m ≤ 10 mm.

[0025] Beneficial effect: at least one second through groove is formed through the reinforcing unit along the X direction, and the second through groove is arranged crosswise with at least one first through groove; thereby, the conduction inside the shell cavity along the X direction can be ensured, the gas path can be unobstructed, an exhaust gap can be formed between the pole group and the shell body, and the gas circulation inside the battery can be improved.

[0026] In an optional implementation, the reinforcing unit is provided with a plurality of second through grooves at intervals along the Z direction, and the interval between two adjacent second through grooves along the Z direction is k, wherein k satisfies: k≥5 mm.

[0027] In an optional embodiment, the vertical spacing between the two second wall panels along the X direction is f, wherein f satisfies: 80mm≤f≤150mm; and / or the minimum spacing between the reinforcing unit and one of the second wall panels along the X direction is g, wherein g satisfies: g≥20mm.

[0028] Beneficial effect: By limiting the minimum distance between the reinforcing unit and one of the second wall panels along the Y direction, it is possible to ensure that the supporting position of the reinforcing unit is relatively close to the middle position in the Y direction, avoiding the reinforcing unit being located at the edge of the Y direction, thereby effectively ensuring the supporting effect of the reinforcing unit.

[0029] In an optional embodiment, the cross-sectional shape of the reinforcement unit in a plane perpendicular to the Z direction includes one of a rectangle, a triangle, a rhombus or a hexagon.

[0030] In a second aspect, the utility model further provides a battery, comprising: the battery housing structure as described above, and a pole group disposed inside the battery housing structure;

[0031] The battery also includes a cover plate adapted to close the opening of the battery housing structure.

[0032] Beneficial effects: After the batteries provided by the utility model are assembled as a whole and stacked into groups, the abutment strength between the batteries can be improved, so that the PACK package does not need crossbeams and longitudinal beams, and the reinforcing unit plays the role of reinforcing ribs, which greatly simplifies the internal structure of the package. At the same time, the production process of the package is simplified, the assembly complexity of the single battery is reduced, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is an exploded schematic diagram of the battery of the utility model;

[0035] Figure 2 It is a schematic diagram of the battery housing structure of the utility model;

[0036] Figure 3 for Figure 2 A partial enlarged view of

[0037] Figure 4 The side view of the battery housing structure of the utility model Figure 1 ;

[0038] Figure 5 for Figure 4 A magnified image of point A;

[0039] Figure 6 The side view of the battery housing structure of the utility model Figure 2 ;

[0040] Figure 7 for Figure 6 Schematic diagram of the middle BB section;

[0041] Figure 8 for Figure 7 A partial enlarged view of .

[0042] Description of reference numerals:

[0043] 1. Cover plate; 2. Shell body; 3. Pole group; 21. Reinforcement unit; 211. First through-groove; 212. Second through-groove; 201. First wall plate; 202. Second wall plate; 203. Shell inner cavity. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] Combine the following Figures 1 to 8 , describing an embodiment of the utility model.

[0049] According to an embodiment of the present utility model, on the one hand, a battery housing structure is provided, comprising:

[0050] The shell body 2 has two first wall plates 201 arranged opposite to each other along the Y direction, and two second wall plates 202 arranged opposite to each other along the X direction. The two first wall plates 201 and the two second wall plates 202 are connected end to end in sequence and enclose a shell inner cavity 203; wherein the spacing between the two second wall plates 202 is greater than the spacing between the two first wall plates 201;

[0051] The reinforcing unit 21 is disposed in the shell inner cavity 203 , and the reinforcing unit 21 abuts between the two first wall panels 201 .

[0052] The shell body 2 of this embodiment can be made of metal material, and the plate is folded and high-frequency welding or laser welding is performed at the intersection of the plates to form the shell body 2. Optionally, the weld formed by welding is located at the small face of the side of the shell body 2. In this embodiment, the weld can be located at the position of the second wall plate 202 on one side.

[0053] The shell body 2 is formed by two first wall panels 201 and two second wall panels 202 connected end to end in sequence. Optionally, the Y direction is perpendicular to the X direction, so that the shell body 2 is formed in a square shell form.

[0054] A shell cavity 203 is formed inside the shell body 2 , and openings are formed at both ends of the shell body 2 along the Z direction so as to accommodate the pole group 3 .

[0055] The distance between the two second wall panels 202 is greater than the distance between the two first wall panels 201. Figure 2 As shown, the YZ surface of the shell body 2 is a small surface, and the XZ surface of the shell body 2 is a large surface. Since the area of ​​the large surface is large, when the wall thickness of the shell body 2 is thin, the large surface is easily deformed due to insufficient support, which leads to a poor opening plane, seriously affecting the assembly efficiency of the cover plate and the shell body, and even blocking the gas passage inside the battery.

[0056] The battery shell structure provided by the embodiment of the utility model has a larger spacing between the two second wall plates 202 than between the two first wall plates 201. By arranging a reinforcing unit 21 in the shell inner cavity 203 and making the reinforcing unit 21 abut between the two first wall plates 201, the two first wall plates 201 can be supported, so as to improve the strength of the shell body 2, ensure the flatness of the two first wall plates 201, avoid the situation of poor opening plane, and thus ensure the assembly efficiency of the cover plate and the shell body; at the same time, it can improve the internal exhaust channel of the battery, avoid channel deformation, ensure the internal gas circulation of the battery, and improve the safety performance.

[0057] In addition, after the battery is assembled and stacked into groups, the abutment strength between the batteries can be improved, so that the PACK package does not need crossbeams and longitudinal beams, and the reinforcing unit 21 plays the role of reinforcing ribs, which greatly simplifies the internal structure of the package. At the same time, the production process of the package is simplified, the assembly complexity of the single battery is reduced, and the production cost is reduced.

[0058] In some embodiments, in combination Figure 3 As shown, the plane where the first wall plate 201 and the plane where the second wall plate 202 are located are both parallel to the Z direction, and the Z direction is perpendicular to the X direction and the Y direction at the same time;

[0059] The extension direction of the reinforcing unit 21 is parallel to the Z direction, and the extension length of the reinforcing unit 21 is not shorter than 80% of the extension length of the first wall plate 201 .

[0060] By making the extension direction of the reinforcing unit 21 parallel to the Z direction and making the extension length of the reinforcing unit 21 not shorter than 80% of the extension length of the first wall plate 201, it is possible to ensure that the reinforcing unit 21 has sufficient support for the first wall plate 201 and ensure structural strength.

[0061] In this embodiment, the length of the shell body 2 along the Z direction may range from 400 mm to 1000 mm, the width along the X direction may range from 80 mm to 150 mm, and the thickness along the Y direction may range from 12 mm to 20 mm.

[0062] As a specific example, the length of the shell body 2 along the Z direction is 500 mm, the width along the X direction is 120 mm, and the thickness along the Y direction is 16 mm. The wall thickness of the shell body 2 is 0.35 mm.

[0063] In some embodiments, in combination Figure 5 As shown, the dimension of the reinforcing unit 21 along the Y direction is a, wherein a satisfies: 12 mm ≤ a ≤ 20 mm;

[0064] The dimension of the reinforcing unit 21 along the X direction is b, where b satisfies: 5 mm ≤ b ≤ 10 mm.

[0065] Optionally, the vertical spacing between the reinforcing unit 21 and the two first wall panels 201 along the Y direction is equal.

[0066] Optionally, the dimension a of the reinforcing unit 21 along the Y direction may be 12 mm, 14 mm, 15 mm, 17 mm, 18 mm or 19 mm.

[0067] Optionally, the dimension b of the reinforcing unit 21 along the X direction may be 5 mm, 6 mm, 7 mm, 8 mm or 9 mm.

[0068] As a specific example, the dimension a of the reinforcing unit 21 along the Y direction is 15.3 mm, and the dimension b of the reinforcing unit 21 along the X direction is 6 mm. The dimension a of the reinforcing unit 21 along the Y direction is equal to the vertical distance between the two first wall panels 201 .

[0069] By limiting the lower limit of the dimension b of the reinforcing unit 21 along the X direction, it is possible to avoid a smaller reinforcing effect due to the smaller size of the reinforcing unit 21; and by limiting the upper limit of the dimension b of the reinforcing unit 21 along the X direction, it is possible to avoid the reinforcing unit 21 occupying a larger space inside the shell body and affecting the internal energy space of the battery.

[0070] In some embodiments, in combination Figure 5 As shown, at least one first through groove 211 is formed through the reinforcing unit 21, and the extending direction of the first through groove 211 is parallel to the extending direction of the reinforcing unit 21;

[0071] The dimension of the first through groove 211 along the X direction is d, wherein d satisfies: 3 mm≤d≤8 mm.

[0072] The first through groove 211 formed through the reinforcing unit 21 can form a through hole gap, which is helpful for exhausting the inside of the battery, and can form an exhaust gap between the electrode group and the shell body, thereby improving the gas circulation inside the battery.

[0073] Optionally, the dimension d of the first through groove 211 along the X direction may be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm or 8 mm.

[0074] As a specific example, the dimension d of the first through groove 211 along the X direction is 4.4 mm.

[0075] In some embodiments, in combination Figure 5 As shown, the reinforcing unit 21 is provided with a plurality of first through grooves 211 in parallel along the Y direction, and the size of each first through groove 211 along the Y direction is c, wherein c satisfies: 1mm≤c≤5mm;

[0076] The interval between two adjacent first through grooves 211 along the Y direction is e, where e satisfies: e≥1 mm.

[0077] By providing a plurality of first through grooves 211 in parallel along the Y direction on the reinforcing unit 21, on the one hand, the weight of the battery shell structure can be reduced, and on the other hand, the number of through-hole gaps can be ensured, which is conducive to internal exhaust of the battery, and sufficient exhaust gaps can be formed between the electrode group and the shell body, thereby improving the gas circulation inside the battery.

[0078] Optionally, the number of the first through grooves 211 of the reinforcing unit 21 arranged in parallel and spaced apart along the Y direction may be two to ten.

[0079] In this embodiment, the reinforcing unit 21 is provided with three first through grooves 211 in parallel along the Y direction. The three first through grooves 211 are evenly distributed along the Y direction.

[0080] Optionally, the dimension c of each first through groove 211 along the Y direction may be 1 mm, 2 mm, 3 mm, 4 mm or 5 mm.

[0081] As a specific example, the dimension c of each first through groove 211 along the Y direction is 2 mm.

[0082] In some embodiments, in combination Figure 8 As shown, the reinforcing unit 21 is further formed with at least one second through groove 212 along the X direction, and the second through groove 212 is arranged to cross at least one first through groove 211;

[0083] The dimension of the second through groove 212 along the Y direction is n, where n satisfies: 3 mm ≤ n ≤ 8 mm;

[0084] The dimension of the second through groove 212 along the Z direction is m, wherein m satisfies: 5 mm≤m≤10 mm.

[0085] By allowing the reinforcing unit 21 to be penetrated along the X direction with at least one second through groove 212, the second through groove 212 is cross-arranged with at least one first through groove 211; thereby, the conductivity inside the shell cavity 203 along the X direction can be ensured, the gas path can be unobstructed, and an exhaust gap can be formed between the electrode group and the shell body 2, thereby improving the gas circulation inside the battery.

[0086] Optionally, the dimension n of the second through groove 212 along the Y direction may be 3 mm, 4 mm, 5 mm, 6 mm or 7 mm.

[0087] As a specific example, the dimension n of the second through groove 212 along the Y direction is 6.3 mm.

[0088] Optionally, the dimension m of the second through groove 212 along the Z direction may be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm.

[0089] As a specific example, the dimension m of the second through groove 212 along the Z direction is 8 mm.

[0090] In some embodiments, in combination Figure 8 As shown, the reinforcing unit 21 is provided with a plurality of second through grooves 212 at intervals along the Z direction, and the interval between two adjacent second through grooves 212 along the Z direction is k, wherein k satisfies: k≥5 mm.

[0091] Optionally, the plurality of second through grooves 212 are evenly distributed along the Z direction.

[0092] In some embodiments, in combination Figure 6 As shown, the vertical spacing between the two second wall panels 202 along the X direction is f, where f satisfies: 80mm≤f≤150mm; and / or, the minimum spacing between the reinforcing unit 21 and one of the second wall panels 202 along the X direction is g, where g satisfies: g≥20mm.

[0093] By limiting the minimum distance between the reinforcing unit 21 and one of the second wall panels 202 along the Y direction, it is possible to ensure that the supporting position of the reinforcing unit 21 is relatively close to the middle in the Y direction, thereby avoiding the reinforcing unit 21 being located at the edge in the Y direction, thereby effectively ensuring the supporting effect of the reinforcing unit 21.

[0094] Optionally, the reinforcing unit 21 equally divides the space on both sides along the Y direction.

[0095] In some embodiments, the cross-sectional shape of the reinforcing unit 21 in a plane perpendicular to the Z direction includes one of a rectangle, a triangle, a rhombus, or a hexagon.

[0096] According to an embodiment of the present utility model, on the other hand, a battery is provided, comprising: the battery housing structure as described above, and an electrode group 3 disposed inside the battery housing structure;

[0097] The battery further comprises a cover plate 1 adapted to close an opening of the battery housing structure.

[0098] When multiple batteries are stacked in a direction perpendicular to the large surface, that is, when multiple batteries are stacked in the Y direction, the reinforcing units 21 inside adjacent batteries can be arranged correspondingly, so that the reinforcing units 21 participate in resisting the force and play a supporting role for the shell body 2, so as to improve the strength of the shell body 2, ensure the flatness of the two first wall panels 201, and avoid deformation of the shell body 2 due to force.

[0099] The battery provided by the embodiment of the utility model can improve the abutment strength between the batteries after the batteries are assembled and stacked into groups, so that the PACK package does not need crossbeams and longitudinal beams, and the reinforcing unit 21 plays the role of reinforcing ribs, which greatly simplifies the internal structure of the package. At the same time, the production process of the package is simplified, the assembly complexity of the single battery is reduced, and the production cost is reduced.

[0100] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. Although the embodiments of the present utility model are 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 utility model, and such modifications and variations are all within the scope defined by the present utility model.

Claims

1. A battery housing structure, characterized in that: include: The shell body comprises two first wall plates arranged opposite to each other along the Y direction, and two second wall plates arranged opposite to each other along the X direction, wherein the two first wall plates and the two second wall plates are connected end to end in sequence and enclosed to form a shell inner cavity; wherein the spacing between the two second wall plates is greater than the spacing between the two first wall plates; The reinforcing unit is disposed in the inner cavity of the shell, and the reinforcing unit abuts between the two first wall panels.

2. The battery housing structure according to claim 1, characterized in that: The plane where the first wall plate is located and the plane where the second wall plate is located are both parallel to the Z direction, and the Z direction is perpendicular to the X direction and the Y direction at the same time; The extension direction of the reinforcing unit is parallel to the Z direction, and the extension length of the reinforcing unit is not shorter than 80% of the extension length of the first wall plate.

3. The battery housing structure according to claim 2, characterized in that: The dimension of the reinforcing unit along the Y direction is a, wherein a satisfies: 12 mm ≤ a ≤ 20 mm; The dimension of the reinforcing unit along the X direction is b, wherein b satisfies: 5 mm ≤ b ≤ 10 mm.

4. The battery housing structure according to claim 3, characterized in that: At least one first through groove is formed through the reinforcing unit, and the extending direction of the first through groove is parallel to the extending direction of the reinforcing unit; The dimension of the first through groove along the X direction is d, wherein d satisfies: 3mm≤d≤8mm.

5. The battery housing structure according to claim 4, characterized in that: The reinforcing unit is provided with a plurality of first through grooves in parallel along the Y direction, and the size of each of the first through grooves along the Y direction is c, wherein c satisfies: 1mm≤c≤5mm; The interval between two adjacent first through grooves along the Y direction is e, where e satisfies: e≥1 mm.

6. The battery housing structure according to claim 5, characterized in that: The reinforcing unit is also formed with at least one second through-groove along the X direction, and the second through-groove is arranged to intersect with at least one of the first through-grooves; The dimension of the second through groove along the Y direction is n, wherein n satisfies: 3mm≤n≤8mm; The dimension of the second through groove along the Z direction is m, wherein m satisfies: 5mm≤m≤10mm.

7. The battery housing structure according to claim 6, characterized in that: The reinforcing unit is provided with a plurality of the second through grooves at intervals along the Z direction, and the interval between two adjacent second through grooves along the Z direction is k, wherein k satisfies: k≥5 mm.

8. The battery housing structure according to any one of claims 1 to 7, characterized in that: The vertical spacing between the two second wall panels along the X direction is f, wherein f satisfies: 80mm≤f≤150mm; and / or the minimum spacing between the reinforcing unit and one of the second wall panels along the X direction is g, wherein g satisfies: g≥20mm.

9. The battery housing structure according to any one of claims 1 to 7, characterized in that: The cross-sectional shape of the reinforcing unit in a plane perpendicular to the Z direction includes one of a rectangle, a triangle, a rhombus or a hexagon.

10. A battery, characterized in that: A battery housing structure comprising a battery housing structure as claimed in any one of claims 1 to 9, and a pole group arranged inside the battery housing structure; The battery also includes a cover plate adapted to close an opening of the battery housing structure.

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