Shell and battery pack

Abstract

The utility model relates to the field of new energy automobiles, in particular to a shell and a battery pack. The shell comprises a bottom plate, a panel and a frame body, wherein the panel is connected with the bottom plate; the frame body and the panel are enclosed to form an accommodating cavity, and the accommodating cavity is used for accommodating a battery cell; wherein the frame body comprises a first disconnecting part, a first connecting part, a first supporting part, a second connecting part, a third connecting part and a second disconnecting part which are formed by bending and connecting in sequence; the disconnected end of the first disconnecting part is bent reversely to form a first attaching part, the first attaching part is attached to the end, connected with the third connecting part, of the second disconnecting part, the disconnected end of the second disconnecting part is bent reversely to form a second attaching part, and the second attaching part is attached to the first supporting part to form two cavities; the first connecting part is connected with the bottom plate; the first disconnecting part and the third connecting part are connected with the panel; an included angle is formed between the third connecting part and the second disconnecting part. According to the shell, the structural strength of the shell of the battery pack can be improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicles, and more specifically, to a housing and a battery pack. Background Art

[0002] The housing of the battery pack is an important structural load-bearing component in the battery system of new energy vehicles, which is used to house and protect the battery, battery thermal management components and electrical components. At the same time, it has an important impact on the collision safety of the whole vehicle, the torsional and bending stiffness of the whole body.

[0003] However, the housing of the existing battery pack has the problem of low structural strength. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a housing and a battery pack, which can increase the structural strength of the housing of the battery pack.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides a housing, including:

[0007] A bottom plate;

[0008] A panel, which is connected to the bottom plate; and

[0009] A frame body, the frame body and the panel enclose a receiving cavity for receiving battery cells;

[0010] Wherein, the frame body includes a first disconnection part, a first connection part, a first support part, a second connection part, a third connection part and a second disconnection part which are sequentially bent and connected;

[0011] One end of the first disconnection part that is disconnected is reversely bent to form a first fitting part, the first fitting part fits with one end of the second disconnection part and the third connection part that are connected, one end of the second disconnection part that is disconnected is reversely bent to form a second fitting part, the second fitting part fits with the first support part to form two chambers; the first connection part is connected to the bottom plate; the first disconnection part and the third connection part are connected to the panel; the third connection part and the second disconnection part are arranged at an angle.

[0012] In an optional embodiment, the thickness of the frame body is greater than or equal to 0.8 mm and less than or equal to 2 mm; and / or,

[0013] The lengths of the first connection part and the second connection part are greater than or equal to 28 mm and less than or equal to 40 mm; and / or,

[0014] The length of the first support part is greater than or equal to 50 mm and less than or equal to 100 mm; and / or,

[0015] The length of the third connecting portion is greater than or equal to 20 mm and less than or equal to 25 mm; and / or,

[0016] The length of the first fitting portion is greater than or equal to 5 mm; and / or,

[0017] The length of the second fitting portion is greater than or equal to 5 mm; and / or,

[0018] The degree of the included angle is greater than or equal to 90 degrees and less than or equal to 115 degrees; and / or,

[0019] The radius of the first arc chamfer is greater than or equal to 3 mm.

[0020] In an alternative embodiment, the housing further includes at least one stepped beam located in the accommodation cavity; the stepped beam includes a fourth connecting portion, a second supporting portion, a first bearing portion, a first abutting portion, a third supporting portion, and a fifth connecting portion connected in sequence; an arc-shaped groove is provided at the connection between the first bearing portion and the first abutting portion; the fourth connecting portion is connected to the bottom plate, and the fifth connecting portion is connected to the third connecting portion.

[0021] In an alternative embodiment, the stepped beam, the frame body, and the bottom plate enclose a first accommodation cavity.

[0022] In an alternative embodiment, the thickness of the stepped beam is greater than or equal to 0.8 mm and less than or equal to 2 mm; and / or,

[0023] The length of the fourth connecting portion is greater than or equal to 15 mm and less than or equal to 20 mm; and / or,

[0024] The length of the second supporting portion is greater than or equal to 8 mm and less than or equal to 20 mm; and / or,

[0025] The length of the first bearing portion is greater than or equal to 20 mm and less than or equal to 35 mm; and / or,

[0026] The length of the first abutting portion is greater than or equal to 12.5 mm and less than or equal to 18 mm; and / or,

[0027] The length of the third supporting portion is greater than or equal to 10 mm and less than or equal to 15 mm; and / or,

[0028] The length of the fifth connecting portion is greater than or equal to 9 mm and less than or equal to 15 mm; and / or,

[0029] The depth of the arc-shaped groove is greater than or equal to 2 mm and less than or equal to 3.5 mm; and / or,

[0030] The diameter of the opening of the arc-shaped groove is greater than or equal to 5.5 mm and less than or equal to 8 mm.

[0031] In an alternative embodiment, the housing further includes at least one channel beam located within the accommodation cavity. Each channel beam includes two plate members, and each plate member includes a sixth connecting portion, a fourth supporting portion, a second bearing portion, and a second abutting portion connected in sequence. A second circular chamfer is provided at the connection between the second bearing portion and the second abutting portion. Wherein, the two second circular chamfers are connected to each other, and the ends of the two second abutting portions are connected to form a long hole. The sixth connecting portion is connected to the bottom plate so that the second bearing portion and the bottom plate enclose a second accommodation cavity.

[0032] In an alternative embodiment, the thickness of the channel beam is greater than or equal to 0.8 mm and less than or equal to 2 mm; and / or,

[0033] The length of the sixth connecting portion is greater than or equal to 15 mm and less than or equal to 20 mm; and / or,

[0034] The length of the fourth supporting portion is greater than or equal to 7.2 mm and less than or equal to 18 mm; and / or,

[0035] The length of the second bearing portion is greater than or equal to 20 mm and less than or equal to 35 mm; and / or,

[0036] The width of the long hole is greater than or equal to 3 mm; and / or,

[0037] The radius of the second circular chamfer is greater than or equal to 1.7 mm.

[0038] In an alternative embodiment, the panel includes a first mounting portion and a second mounting portion. The first mounting portion is connected to the second mounting portion, and the second mounting portion is connected to the bottom plate and the frame body. Third circular chamfers are provided at the connections between the first mounting portion and the second mounting portion, and fourth circular chamfers are provided at each end of the second mounting portion.

[0039] Wherein, the first mounting portion includes two assembly inclined surfaces.

[0040] In an alternative embodiment, the height of the panel is greater than or equal to 110 mm and less than or equal to 150 mm; and / or,

[0041] The length of the first mounting portion is greater than or equal to 220 mm and less than or equal to 500 mm; and / or,

[0042] The length of the second mounting portion is greater than or equal to 550 mm and less than or equal to 700 mm; and / or,

[0043] The height of the second mounting portion is greater than or equal to 50 mm and less than or equal to 100 mm; and / or,

[0044] The radius of the third circular chamfer is greater than or equal to 10 mm; and / or,

[0045] The radius of the fourth circular chamfer is greater than or equal to 1.5 mm; and / or,

[0046] The inclination angle of the assembly inclined plane is greater than or equal to 115 degrees and less than or equal to 145 degrees.

[0047] In a second aspect, the present utility model provides a battery pack, comprising:

[0048] A battery module and the aforementioned housing, the battery module is disposed within the housing and is connected to the housing.

[0049] The beneficial effects of the embodiments of the present utility model include:

[0050] The housing includes a bottom plate, a panel, and a frame body, the panel is connected to the bottom plate; the frame body and the panel enclose a receiving cavity for receiving the battery cells; wherein, the frame body includes a first disconnection portion, a first connection portion, a first support portion, a second connection portion, a third connection portion, and a second disconnection portion that are sequentially bent and connected; one end of the first disconnection portion that is disconnected is bent reversely to form a first fitting portion, the first fitting portion is fitted with one end of the second disconnection portion and the third connection portion that are connected, one end of the second disconnection portion that is disconnected is bent reversely to form a second fitting portion, the second fitting portion is fitted with the first support portion to form two chambers; the first connection portion is connected to the bottom plate; the first disconnection portion and the third connection portion are connected to the panel; the third connection portion and the second disconnection portion are arranged at an angle.

[0051] The frame body in the housing is formed by continuously bending a plate member to form a structure similar to a "day" character, so that the frame body has two chambers, and the frame body has a certain deformation space; and through the fitting of the first fitting portion and the second disconnection portion, and the fitting of the second fitting portion and the first support portion, the support effect on the second disconnection portion is improved, thereby improving the structural strength of the frame body. The third connection portion and the second disconnection portion of the frame body are arranged at an angle, so that the force on the frame body is more reasonable, thereby improving the structural strength of the frame body. Description of the Drawings

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0053] Figure 1 It is a schematic structural diagram of the battery pack provided by the embodiment of the present utility model;

[0054] Figure 2 It is a schematic structural diagram of the housing from a first perspective provided by the embodiment of the present utility model;

[0055] Figure 3 is Figure 2 a schematic structural view of the position a in

[0056] Figure 4 a schematic structural view of the housing provided by the embodiment of the present utility model from a second perspective;

[0057] Figure 5 is Figure 4 a sectional view taken along the line b-b in

[0058] Figure 6 a sectional view of the frame body provided by the embodiment of the present utility model from a first perspective;

[0059] Figure 7 a sectional view of the frame body provided by the embodiment of the present utility model from a second perspective;

[0060] Figure 8 a sectional view of the stepped beam provided by the embodiment of the present utility model from a first perspective;

[0061] Figure 9 a sectional view of the stepped beam provided by the embodiment of the present utility model from a second perspective;

[0062] Figure 10 a sectional view of the channel-section beam provided by the embodiment of the present utility model;

[0063] Figure 11 a sectional view of the panel provided by the embodiment of the present utility model.

[0064] Icons: 100 - housing; 110 - bottom plate; 120 - panel; 121 - first mounting portion; 122 - second mounting portion; 123 - third arc chamfer; 124 - fourth arc chamfer; 125 - assembly inclined surface; 130 - frame body; 131 - first disconnection portion; 132 - first connection portion; 133 - first support portion; 134 - second connection portion; 135 - third connection portion; 136 - second disconnection portion; 137 - first arc chamfer; 138 - first fitting portion; 139 - second fitting portion; 141 - included angle; 142 - chamber; 150 - stepped beam; 151 - fourth connection portion; 152 - second support portion; 153 - first bearing portion; 154 - first abutting portion; 155 - third support portion; 156 - fifth connection portion; 157 - arc groove; 158 - first accommodation cavity; 160 - channel-section beam; 161 - plate member; 162 - sixth connection portion; 163 - fourth support portion; 164 - second bearing portion; 165 - second abutting portion; 166 - second arc chamfer; 167 - long slot; 168 - second accommodation cavity; 200 - battery module; 300 - battery pack. Detailed implementation manners

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0066] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0067] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0068] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0069] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0070] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0071] Please refer toFigures 1-11 , Figure 1 is a schematic structural view of the battery pack 300 provided by an embodiment of the present utility model; Figure 2 is a schematic structural view of the housing 100 from a first perspective provided by an embodiment of the present utility model; Figure 3 is Figure 2 a schematic structural view of the position a in Figure 4 is a schematic structural view of the housing 100 from a second perspective provided by an embodiment of the present utility model; Figure 5 is Figure 4 a sectional view taken along line b-b in Figure 6 is a sectional view of the frame body 130 from a first perspective provided by an embodiment of the present utility model; Figure 7 is a sectional view of the frame body 130 from a second perspective provided by an embodiment of the present utility model; Figure 8 is a sectional view of the stepped beam 150 from a first perspective provided by an embodiment of the present utility model; Figure 9 is a sectional view of the stepped beam from a second perspective provided by an embodiment of the present utility model; Figure 10 is a sectional view of the channel-shaped beam 160 provided by an embodiment of the present utility model; Figure 11 is a sectional view of the panel 120 provided by an embodiment of the present utility model.

[0072] A battery pack 300 provided by an embodiment of the present utility model includes a battery module 200 and a housing 100. The battery module 200 is disposed within the housing 100 and is connected to the housing 100. Among them, the battery module 200 includes a plurality of battery cells arranged in an array.

[0073] To enhance the structural strength of the housing 100, the housing 100 includes a bottom plate 110, a panel 120, and a frame body 130. The panel 120 is connected to the bottom plate 110.

[0074] The frame body 130 includes a first disconnection portion 131, a first connection portion 132, a first support portion 133, a second connection portion 134, a third connection portion 135, and a second disconnection portion 136 formed by continuously bending a plate member.

[0075] First arc chamfers 137 are provided at the joints of the first disconnection portion 131, the first connection portion 132, the first support portion 133, the second connection portion 134, the third connection portion 135, and the second disconnection portion 136.

[0076] One end of the first disconnection portion 131 that is disconnected is bent reversely to form a first fitting portion 138. The first fitting portion 138 fits with one end of the second disconnection portion 136 and the third connection portion 135 that are connected. One end of the second disconnection portion 136 that is disconnected is bent reversely to form a second fitting portion 139. The second fitting portion 139 fits with the first support portion 133 to form two chambers 142.

[0077] The first connecting portion 132 is connected to the bottom plate 110; the first disconnecting portion 131 and the third connecting portion 135 are connected to the panel 120. The third connecting portion 135 and the second disconnecting portion 136 are arranged at an angle 141. Wherein, the frame body 130 and the panel 120 enclose a receiving cavity for receiving the battery cell.

[0078] Specifically, in this embodiment, the frame body 130 and the panel 120 enclose a receiving cavity, and the battery module 200 is located in the receiving cavity. The frame body 130 is bent clockwise to form a first disconnecting portion 131, a first connecting portion 132, a first supporting portion 133, a second connecting portion 134, a third connecting portion 135, and a second disconnecting portion 136; and first arc chamfers 137 are provided at the connection points to facilitate installation and improve aesthetics.

[0079] The disconnected ends of the first disconnecting portion 131 and the second disconnecting portion 136 are both bent in the reverse direction, that is, if the first disconnecting portion 131 and the second disconnecting portion 136 are formed by clockwise bending, then the first fitting portion 138 and the second fitting portion 139 are formed by counterclockwise bending; if the first disconnecting portion 131 and the second disconnecting portion 136 are formed by counterclockwise bending, then the first fitting portion 138 and the second fitting portion 139 are formed by clockwise bending.

[0080] Thus, the cross-section of the frame body 130 in the direction perpendicular to the bottom plate 110 is a cross-section similar to a "day" character. It should be noted that this cross-section is not exactly the same as the "day" character, only having some similarities.

[0081] The first fitting portion 138 and the end of the second disconnecting portion 136 connected to the third connecting portion 135 are in contact, and the second fitting portion 139 is in contact with the first supporting portion 133, so that the frame body 130 has two chambers 142, that is, the frame body 130 is a cavity structure, and the frame body 130 has a certain deformation space. The first fitting portion 138 and the second fitting portion 139 are used to improve the supporting effect on the second disconnecting portion 136, thereby improving the structural strength of the frame body 130.

[0082] In this embodiment, the third connecting portion 135 and the second disconnecting portion 136 are arranged at an angle 141, so that the force on the frame body 130 is more reasonable, and from the perspective of the manufacturing process, the manufacturing is simpler and more convenient. Thus, the structural strength of the frame body 130 is improved to ensure that the battery pack 300 is not damaged.

[0083] According to the above content, please refer to Figures 1-7, in this embodiment, the lengths of the first connecting portion 132 and the second connecting portion 134 are A1, where 28 mm ≤ A1 ≤ 40 mm; for example, in this embodiment, A1 can be 30 mm; in other embodiments, A1 can also be 35 mm or 37 mm.

[0084] In this embodiment, the length of the first supporting portion 133 is B1, where 50 mm ≤ B1 ≤ 100 mm; for example, in this embodiment, B1 can be 59.7 mm; in other embodiments, B1 can also be 60 mm, 70 mm, 80 mm or 90 mm.

[0085] In this embodiment, the length of the third connecting portion 135 is C1, where 20 mm ≤ C1 ≤ 25 mm; for example, in this embodiment, C1 can be 23.5 mm; in other embodiments, C1 can also be 21 mm, 22 mm or 24 mm.

[0086] In this embodiment, the lengths of the first fitting portion 138 and the second fitting portion 139 are E1 and D1 respectively, where E1 ≥ 5 mm and D1 ≥ 5 mm; for example, in this embodiment, E1 and D1 can both be 5.05 mm; in other embodiments, E1 and D1 can be unequal, E1 can also be 6 mm, and D1 can also be 5.5 mm.

[0087] In this embodiment, the degree of the included angle 141 is α1, where 90° ≤ α1 ≤ 115°; for example, in this embodiment, α1 can be 100°; in other embodiments, α1 can also be 95° or 110°.

[0088] In this embodiment, the radius of the first arc chamfer 137 is R1, where R1 ≥ 3 mm; for example, in this embodiment, R1 can be 4.2 mm; in other embodiments, R1 can also be 3.7 mm or 5.1 mm.

[0089] Further, please refer to Figures 1-9 , the housing 100 further includes at least one stepped beam 150, and the stepped beam 150 is located in the accommodating cavity; the stepped beam 150 includes a fourth connecting portion 151, a second supporting portion 152, a first bearing portion 153, a first abutting portion 154, a third supporting portion 155, and a fifth connecting portion 156 that are connected in sequence.

[0090] An arc-shaped groove 157 is provided at the connection between the first bearing portion 153 and the first abutting portion 154. The fourth connecting portion 151 is connected to the bottom plate 110.

[0091] Specifically, in this embodiment, the housing 100 includes two stepped beams 150 which are arranged oppositely, and each stepped beam 150 is connected to a side beam. In this embodiment, the stepped beam 150 is continuously bent to form a fourth connecting portion 151, a second supporting portion 152, a first bearing portion 153, a first abutting portion 154, a third supporting portion 155, and a fifth connecting portion 156.

[0092] It should be noted that, except for the arc-shaped groove 157 provided at the connection between the first bearing portion 153 and the first abutting portion 154, the first circular chamfer 137 is provided at other connections.

[0093] It can be understood that, in this embodiment, the first bearing portion 153 and the first abutting portion 154 are in contact with the battery cell, and the arc-shaped groove 157 is provided to avoid the battery cell; thus, when the battery cell is assembled to the stepped beam 150, the sheet metal bending fillet of the stepped beam 150 will not interfere with the bottom corner of the battery cell, and further, there is no need to provide an insulating protection compensation member at the bottom of the battery cell. Therefore, the battery housing can avoid the interference of the sheet metal bending fillet on the assembly of the battery cell, and there is no need to provide an insulating protection compensation member, reducing the weight and cost of the battery pack 300.

[0094] In this embodiment, the stepped beam 150, the frame body 130, and the bottom plate 110 enclose to form a first accommodating cavity 158. Among them, the first accommodating cavity 158 can be used to accommodate structures such as liquid cooling pipes, and also enables the stepped beam, the bottom plate 110, and the frame body 130 to jointly form a cavity, thereby reducing the weight and improving the structural strength.

[0095] Please refer to Figures 1-9 , in this embodiment, the length of the fourth connecting portion 151 is A2, where 15 mm ≤ A2 ≤ 20 mm; for example, in this embodiment, A2 can be 15.5 mm; in other embodiments, A2 can also be 16 mm, 17.5 mm, or 19 mm.

[0096] In this embodiment, the length of the first bearing portion 153 is B2, where 20 mm ≤ B2 ≤ 35 mm; for example, in this embodiment, B2 can be 25.5 mm; in other embodiments, B2 can also be 22 mm, 30 mm, or 33.5 mm.

[0097] In this embodiment, the length of the third supporting portion 155 is C2, where 10 mm ≤ C2 ≤ 15 mm; in this embodiment, C2 can be 10.5 mm; in other embodiments, C2 can also be 12.5 mm or 14.5 mm.

[0098] In this embodiment, the length of the second support portion 152 is E2, where 8 mm ≤ E2 ≤ 20 mm; in this embodiment, E2 can be 13.2 mm; in other embodiments, E2 can also be 10 mm, 15 mm or 17 mm.

[0099] In this embodiment, the length of the first abutting portion 154 is F2, where 12.5 mm ≤ F2 ≤ 18 mm; in this embodiment, F2 can be 13.5 mm; in other embodiments, F2 can also be 15 mm or 17 mm.

[0100] In this embodiment, the length of the fifth connecting portion 156 is G2, where 9 mm ≤ G2 ≤ 15 mm; in this embodiment, G2 can be 10 mm; in other embodiments, G2 can also be 11.5 mm or 13 mm.

[0101] In this embodiment, the depth of the arc-shaped groove 157 is h3, where 2 mm ≤ h3 ≤ 3.5 mm; in this embodiment, h3 can be 2.5 mm; in other embodiments, h3 can also be 3 mm.

[0102] In this embodiment, the diameter of the opening of the arc-shaped groove 157 is d, where 5.5 mm ≤ d ≤ 8 mm; in this embodiment, d can be 6 mm, and in other embodiments, d can also be 7 mm.

[0103] Further, please refer to Figures 1-10 , the housing 100 further includes at least one channel-shaped beam 160, and the channel-shaped beam 160 is located in the accommodating cavity.

[0104] Each channel-shaped beam 160 includes two plate members 161, and the plate member 161 includes a sixth connecting portion 162, a fourth support portion 163, a second bearing portion 164 and a second abutting portion 165 which are connected in sequence. A second circular arc chamfer 166 is provided at the connection between the second bearing portion 164 and the second abutting portion 165.

[0105] Wherein, the two second circular arc chamfers 166 are connected to each other, and the ends of the two second abutting portions 165 are connected to each other to form a long hole 167; the sixth connecting portion 162 is connected to the bottom plate 110, so that the second bearing portion 164 and the bottom plate 110 enclose a second accommodating cavity 168.

[0106] Specifically, in this embodiment, a plurality of channel-shaped beams 160 are provided, and the plurality of channel-shaped beams 160 are arranged in parallel and at intervals along the length direction of the panel 120. Among them, the channel-shaped beam 160 is parallel and at intervals with the stepped beam 150.

[0107] It should be noted that multiple battery cells are arranged in multiple rows, and a J-shaped beam 160 is configured for every two adjacent rows of battery cells. Understandably, each J-shaped beam 160 includes two plate members 161, and each plate member 161 corresponds to one row of battery cells.

[0108] Since the plate member 161 is continuously bent at the sixth connecting portion 162, the fourth supporting portion 163, the second bearing portion 164, and the second abutting portion 165, each second bearing portion 164 bears the battery cells of this row, and each second abutting portion 165 contacts the battery cells of this row. A second circular chamfer 166 is provided between the second bearing portion 164 and the second abutting portion 165 for avoiding interference with the battery cells.

[0109] Thus, when the battery cells are assembled to the J-shaped beam 160, the sheet metal bending fillet of the J-shaped beam 160 will not interfere with the bottom corners of the battery cells, and thus there is no need to provide an insulating protection compensating member at the bottom of the battery cells. Therefore, this battery case can avoid the interference of the sheet metal bending fillet on the assembly of the battery cells, and there is no need to provide an insulating protection compensating member, reducing the weight and cost of the battery pack 300.

[0110] In this embodiment, the two second circular chamfers 166 are connected to each other, and the ends of the two second abutting portions 165 are connected to each other to form a long slot 167; the sixth connecting portion 162 is connected to the bottom plate 110 so that the second bearing portion 164 and the bottom plate 110 enclose a second accommodating cavity 168.

[0111] Understandably, in this embodiment, by providing the long slot 167, the adjacent two rows of battery cells are spaced apart to avoid short circuit of the battery cells. In this embodiment, by providing the second accommodating cavity 168, it can not only be used to accommodate structures such as liquid cooling pipes, but also form a cavity to improve the structural strength of the housing 100.

[0112] Please refer to Figures 1-10 , in this embodiment, the length of the sixth connecting portion 162 is A3, where 15 mm ≤ A3 ≤ 20 mm; for example, in this embodiment, A3 can be 17.5 mm; in other embodiments, A3 can also be 16 mm or 19 mm.

[0113] The length of the fourth supporting portion 163 is B3, where 7.2 mm ≤ A3 ≤ 18 mm; for example, in this embodiment, B3 can be 13.2 mm; in other embodiments, B3 can also be 15 mm or 17 mm.

[0114] The length of the second bearing portion 164 is C3, where 20 mm ≤ A3 ≤ 35 mm; for example, in this embodiment, C3 can be 22.5 mm; in other embodiments, C3 can also be 25 mm or 30 mm.

[0115] The width of the long slot 167 is D3, where D3 ≥ 3 mm; for example, in this embodiment, D3 can be 3.5 mm; in other embodiments, D3 can also be 4 mm.

[0116] The radius of the second arc chamfer 166 is R2, where R2 ≥ 1.7 mm; for example, in this embodiment, R2 can be 2.5 mm; in other embodiments, R2 can also be 3 mm.

[0117] It should be noted that in this embodiment, the thickness of the frame plate body is H1, the thickness of the stepped beam 150 is H2, and the thickness of the channel-shaped beam 160 is H3, where 0.8 mm ≤ H1 = H2 = H3 ≤ 2 mm; for example, in this embodiment, H1 = H2 = H3 = 1.2 mm. In other embodiments, H1 = H2 = H3 = 1.8 mm, or H1, H2, and H3 are not equal.

[0118] Please refer to Figures 1-11 , further, the panel 120 includes a first mounting portion 121 and a second mounting portion 122. The first mounting portion 121 is connected to the second mounting portion 122, and the second mounting portion 122 is connected to the bottom plate 110 and the frame body 130.

[0119] Third arc chamfers 123 are provided at the joints of the first mounting portion 121 and the second mounting portion 122, and fourth arc chamfers 124 are provided at each end of the second mounting portion 122.

[0120] Among them, the height of the second mounting portion 122 is equal to the height of the frame body 130; the first mounting portion 121 includes two assembly inclined surfaces 125.

[0121] Specifically, a plurality of through holes are provided on the panel 120 to pass through structures such as wires and liquid cooling pipes; among them, the second mounting portion 122 is used to connect to the frame body 130, so as to enclose a receiving cavity to receive the battery module 200. In this embodiment, the first mounting portion 121 is provided to increase the diameter of the through holes, facilitating the assembly of structures such as wires and liquid cooling pipes.

[0122] It should be noted that when the housing 100 is connected to the upper cover, a sealing gasket needs to be provided at the assembly inclined surface 125. The larger the inclined surface angle, the greater the extrusion force on the sealing gasket, and thus the better the sealing performance.

[0123] Please refer to Figures 1-11 , in this embodiment, the height of the panel 120 is h1, where 110 mm ≤ h1 ≤ 150 mm. In this embodiment, h1 can be 111.2 mm; in other embodiments, h1 can also be 120 mm, 130 mm, or 140 mm.

[0124] In this embodiment, the length of the first mounting portion 121 is L1, where 220 mm ≤ L1 ≤ 500 mm. In this embodiment, L1 can be 383 mm; in other embodiments, L1 can also be 400 mm or 450 mm.

[0125] In this embodiment, the length of the second mounting portion 122 is L2, where 550 mm ≤ L2 ≤ 700 mm; in this embodiment, L2 can be 600 mm; in other embodiments, L2 can also be 650 mm.

[0126] In this embodiment, the height of the second mounting portion 122 is h2, where 50 mm ≤ h2 ≤ 100 mm; in this embodiment, h2 can be 600 mm; in other embodiments, h2 can also be 650 mm.

[0127] In this embodiment, the radius of the third arc chamfer 123 is R3, where R3 ≥ 10 mm; in this embodiment, R3 can be 10.5 mm; in other embodiments, R3 can also be 12 mm.

[0128] In this embodiment, the radius of the fourth arc chamfer 124 is R4, where R4 ≥ 1.5 mm; in this embodiment, R4 can be 1.6 mm; in other embodiments, R4 can also be 2 mm.

[0129] In this embodiment, the inclination angle of the assembly inclined surface 125 is α2, where 115° ≤ α2 ≤ 145°; in this embodiment, α2 can be 140°; in other embodiments, α2 can also be 120°.

[0130] In summary, the housing 100 is provided with a frame body 130, a stepped beam 150 and a channel-shaped beam 160, and the frame body 130, the stepped beam 150 and the channel-shaped beam 160 are continuously bent so that the frame body 130, the stepped beam 150 and the channel-shaped beam 160 all form a cavity structure, reducing the weight of the battery pack 300, and using the characteristics of the cavity structure to improve the structural strength of the housing 100. Moreover, by using the first accommodation cavity 158 and the second accommodation cavity 168 to accommodate structures such as liquid cooling pipes, the supporting effect on the battery cells is also improved; the third connection portion 135 and the second disconnection portion 136 of the frame body 130 are arranged at an angle of 141°, making the force on the frame body 130 more reasonable, further improving the structural strength of the housing 100 and avoiding deformation of the housing 100 and damage to the battery cells. Through holes are formed in the panel 120 to assemble structures such as wires and liquid cooling pipes, and an assembly inclined surface 125 is provided on the panel 120 to increase the extrusion force on the gasket, thereby improving the sealing performance.

[0131] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A housing, characterized in that: include: Bottom plate (110); A panel (120), the panel (120) being connected to the bottom plate (110); as well as A frame body (130), wherein the frame body (130) and the panel (120) enclose a receiving cavity, and the receiving cavity is used to receive the battery cell; The frame body (130) comprises a first disconnecting portion (131), a first connecting portion (132), a first supporting portion (133), a second connecting portion (134), a third connecting portion (135), and a second disconnecting portion (136) which are formed by bending and connecting in sequence; One end of the first disconnected portion (131) is reversely bent to form a first fitting portion (138), the first fitting portion (138) is fitted with one end of the second disconnected portion (136) and the third connecting portion (135), the one end of the second disconnected portion (136) is reversely bent to form a second fitting portion (139), the second fitting portion (139) is fitted with the first supporting portion (133) to form two chambers (142); the first connecting portion (132) is connected to the bottom plate (110); the first disconnected portion (131) and the third connecting portion (135) are connected to the panel (120); the third connecting portion (135) and the second disconnected portion (136) are arranged at an angle (141).

2. The housing according to claim 1, characterized in that: The thickness of the frame body (130) is greater than or equal to 0.8 mm and less than or equal to 2 mm; and / or, The length of the first connecting portion (132) and the second connecting portion (134) is greater than or equal to 28 mm and less than or equal to 40 mm; and / or, The length of the first supporting portion (133) is greater than or equal to 50 mm and less than or equal to 100 mm; and / or, The length of the third connecting portion (135) is greater than or equal to 20 mm and less than or equal to 25 mm; and / or, The length of the first fitting portion (138) is greater than or equal to 5 mm; and / or, The length of the second fitting portion (139) is greater than or equal to 5 mm; and / or, The angle (141) is greater than or equal to 90 degrees and less than or equal to 115 degrees; and / or, The radius of the first circular chamfer (137) is greater than or equal to 3 mm.

3. The housing according to claim 1, characterized in that: The housing (100) further comprises at least one stepped beam (150), wherein the stepped beam (150) is located in the accommodating cavity; the stepped beam (150) comprises a fourth connecting portion (151), a second supporting portion (152), a first bearing portion (153), a first abutting portion (154), a third supporting portion (155), and a fifth connecting portion (156) which are connected in sequence; an arc groove (157) is provided at the connection between the first bearing portion (153) and the first abutting portion (154); the fourth connecting portion (151) is connected to the bottom plate (110), and the fifth connecting portion (156) is connected to the third connecting portion (135).

4. The housing according to claim 3, characterized in that: The stepped beam (150), the frame body (130) and the bottom plate (110) enclose a first accommodating cavity (158).

5. The housing according to claim 3, characterized in that: The thickness of the stepped beam (150) is greater than or equal to 0.8 mm and less than or equal to 2 mm; and / or, The length of the fourth connecting portion (151) is greater than or equal to 15 mm and less than or equal to 20 mm; and / or, The length of the second supporting portion (152) is greater than or equal to 8 mm and less than or equal to 20 mm; and / or, The length of the first bearing portion (153) is greater than or equal to 20 mm and less than or equal to 35 mm; and / or, The length of the first abutting portion (154) is greater than or equal to 12.5 mm and less than or equal to 18 mm; and / or, The length of the third supporting portion (155) is greater than or equal to 10 mm and less than or equal to 15 mm; and / or, The length of the fifth connecting portion (156) is greater than or equal to 9 mm and less than or equal to 15 mm; and / or, The depth of the arc-shaped groove (157) is greater than or equal to 2 mm and less than or equal to 3.5 mm; and / or, The diameter of the opening of the arc-shaped groove (157) is greater than or equal to 5.5 mm and less than or equal to 8 mm.

6. The housing according to claim 1, characterized in that: The housing (100) further comprises at least one "I"-shaped beam (160), the "I"-shaped beam (160) being located in the accommodating cavity; each of the "I"-shaped beams (160) comprises two plates (161), the plates (161) comprising a sixth connecting portion (162), a fourth supporting portion (163), a second bearing portion (164) and a second abutting portion (165) which are connected in sequence, and a second circular arc chamfer (166) is provided at the connection between the second bearing portion (164) and the second abutting portion (165); wherein the two second circular arc chamfers (166) are connected to each other, and the ends of the two second abutting portions (165) are connected to each other to form a long strip hole (167); the sixth connecting portion (162) is connected to the bottom plate (110), so that the second bearing portion (164) and the bottom plate (110) enclose a second accommodating cavity (168).

7. The housing according to claim 6, characterized in that: The thickness of the "X" beam (160) is greater than or equal to 0.8 mm and less than or equal to 2 mm; and / or, The length of the sixth connecting portion (162) is greater than or equal to 15 mm and less than or equal to 20 mm; and / or, The length of the fourth supporting portion (163) is greater than or equal to 7.2 mm and less than or equal to 18 mm; and / or, The length of the second bearing portion (164) is greater than or equal to 20 mm and less than or equal to 35 mm; and / or, The width of the elongated hole (167) is greater than or equal to 3 mm; and / or, The radius of the second circular chamfer (166) is greater than or equal to 1.7 mm.

8. The housing according to claim 1, characterized in that: The panel (120) comprises a first mounting portion (121) and a second mounting portion (122), the first mounting portion (121) being connected to the second mounting portion (122), and the second mounting portion (122) being connected to the bottom plate (110) and the frame body (130); a third arc chamfer (123) is provided at the connection between the first mounting portion (121) and the second mounting portion (122), and each end of the second mounting portion (122) is provided with a fourth arc chamfer (124); Wherein, the first mounting portion (121) comprises two assembly inclined surfaces (125).

9. The housing according to claim 8, characterized in that: The height of the panel (120) is greater than or equal to 110 mm and less than or equal to 150 mm; and / or, The length of the first mounting portion (121) is greater than or equal to 220 mm and less than or equal to 500 mm; and / or, The length of the second mounting portion (122) is greater than or equal to 550 mm and less than or equal to 700 mm; and / or, The height of the second mounting portion (122) is greater than or equal to 50 mm and less than or equal to 100 mm; and / or, The radius of the third circular chamfer (123) is greater than or equal to 10 mm; and / or, The radius of the fourth arc chamfer (124) is greater than or equal to 1.5 mm; and / or, The inclination angle of the assembly slope (125) is greater than or equal to 115 degrees and less than or equal to 145 degrees.

10. A battery pack, characterized in that: include: A battery module (200) and a shell (100) according to any one of claims 1 to 9, wherein the battery module (200) is arranged in the shell (100) and connected to the shell (100).

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