Shell and battery pack

Abstract

The utility model relates to the field of new energy, in particular to a shell and a battery pack. The shell comprises a bottom shell, two edge beams and two end plates, the edge beams are connected with the bottom shell, and the two edge beams and the two end plates are all connected with the bottom shell and distributed on the periphery of the bottom shell; the two edge beams are oppositely arranged, and the two end plates are oppositely arranged; the two ends of each end plate are connected to one ends of the two edge beams respectively. The two boundary beams and the two end plates jointly define a placing area for placing a battery cell unit; the boundary beam is provided with at least one structure reinforcing part. The shell is high in structural strength, so that the protection effect on the battery cell units in the shell can be improved, and the safety of the battery pack is improved. Moreover, the number of parts of the shell is reduced, so that the weight of the shell is reduced, and the cruising ability of the battery pack is further improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy, and in particular to a shell and a battery pack. Background Art

[0002] The battery pack shell is an important structural bearing component in the battery system of new energy vehicles. The battery pack shell is used to store and protect the battery, battery thermal management components, electrical components and other structures. At the same time, it has an important impact on the collision safety of the entire vehicle, the torsion and bending stiffness of the entire body.

[0003] However, the battery pack shell in the prior art has the problems of low structural strength, large number of parts and high weight. Utility Model Content

[0004] The purpose of the utility model is to provide a shell and a battery pack, wherein the shell has high structural strength, thereby improving the protection effect of the battery cell unit in the shell and increasing the safety of the battery pack. In addition, the shell simplifies the number of parts, thereby reducing the weight of the shell and further improving the battery life of the battery pack.

[0005] The embodiment of the utility model is achieved as follows:

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

[0007] Bottom shell;

[0008] Two side beams and two end plates, both of which are connected to the bottom shell and are distributed around the bottom shell; the two side beams are arranged opposite to each other, and the two end plates are arranged opposite to each other; two ends of each end plate are respectively connected to one end of the two side beams;

[0009] The two side beams and the two end plates together enclose a placement area for placing the battery cell units;

[0010] Wherein, the side beam is provided with at least one structural reinforcement portion.

[0011] In an optional embodiment, the structural reinforcement portion includes a protrusion, and the protrusion protrudes in a direction close to the placement area.

[0012] In an optional embodiment, the housing further comprises at least one reinforcing rod, and the reinforcing rod is arranged on the bottom shell;

[0013] The side beam is provided with at least one avoidance groove, and the avoidance groove is used to allow the reinforcing rod to pass through the side beam.

[0014] In an optional embodiment, the shell further includes two support plates, the end plates are spaced apart from the outer edge of the relative bottom shell, and the support plates are arranged between the end plates and the outer edge of the bottom shell; the support plates are connected to the bottom shell, and each support plate is connected to an end plate.

[0015] In an optional embodiment, the end plate is provided with a plurality of protrusions, and the support plate is provided with a plurality of recesses; the recessed direction of the recesses is the same as the protruding direction of the protrusions, and the recesses are recessed in a direction away from the end plate; each recess is sleeved on a protrusion.

[0016] In an optional embodiment, the support plate is spaced apart from the outer edge of the bottom shell, and the spaced area between the support plate and the outer edge of the bottom shell is used to place electrical components.

[0017] In an optional embodiment, the shell further includes an inner lining plate, which is located in the placement area and connected to the bottom shell and the side beam;

[0018] The inner lining plate is provided with a receiving groove, and the receiving groove is used to receive the heating wire.

[0019] In an optional embodiment, the shell further includes a placement plate, the placement plate is located in the placement area, and the placement plate is connected to the lining plate;

[0020] The placement plate is provided with a plurality of accommodating holes arranged in an array, and each accommodating hole is used to accommodate a battery cell.

[0021] In an optional embodiment, the end plate is provided with a plurality of first heat dissipation holes, and the plurality of first heat dissipation holes are arranged at intervals along the length direction of the end plate;

[0022] The shell further comprises two support plates, the end plates are spaced apart from the outer edge of the opposite bottom shell, and the support plates are arranged between the end plates and the outer edge of the bottom shell; the support plates are connected to the bottom shell, and each support plate is connected to one end plate;

[0023] The support plate is provided with a plurality of second heat dissipation holes, and the plurality of second heat dissipation holes are arranged at intervals along the length direction of the support plate.

[0024] In a second aspect, the utility model provides a battery pack, comprising:

[0025] The battery cell unit and the aforementioned shell, the battery pack is arranged in the shell.

[0026] The beneficial effects of the embodiments of the utility model include:

[0027] The shell includes a bottom shell, two side beams and two end plates. The side beams are connected to the bottom shell, and the two side beams and the two end plates are all connected to the bottom shell and are distributed around the bottom shell. The two side beams are arranged opposite to each other, and the two end plates are arranged opposite to each other. The two ends of each end plate are respectively connected to one end of the two side beams. The two side beams and the two end plates together enclose a placement area for placing battery cell units. The side beams are provided with at least one structural reinforcement portion.

[0028] The side beams in the housing are provided with structural reinforcement parts, which play a role in strengthening the structural strength of the housing, thereby improving the protection effect of the battery cells in the housing and increasing the safety of the battery pack. The housing positions the battery cells through the side beams and end plates, and the structure is simpler, the number of parts is reduced, and the weight of the housing is reduced, thereby improving the battery life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the 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 certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of a battery pack provided by an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of the structure of the bottom plate, ring beam and side beam provided in the embodiment of the utility model;

[0032] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0033] Figure 4 A schematic diagram of the structure of a housing provided in an embodiment of the utility model;

[0034] Figure 5 An exploded schematic diagram of a housing provided in an embodiment of the utility model;

[0035] Figure 6 A schematic diagram of the structure of the end plate provided in an embodiment of the utility model;

[0036] Figure 7 A schematic diagram of the structure of a support plate provided in an embodiment of the utility model;

[0037] Figure 8 A schematic structural diagram of a placement plate provided in an embodiment of the utility model.

[0038] Icons: 100-shell; 110-bottom shell; 120-side beam; 121-structural reinforcement; 122-avoidance groove; 130-end plate; 131-first heat dissipation hole; 132-protrusion; 140-reinforcement rod; 150-support plate; 151-second heat dissipation hole; 152-recess; 160-lining plate; 161-accommodation groove; 170-placing plate; 171-accommodation hole; 200-battery cell unit; 300-battery pack. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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.

[0045] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a battery pack 300 provided in an embodiment of the present utility model.

[0046] The embodiment of the utility model provides a battery pack 300 including an upper cover, a battery cell unit 200 and a shell 100, wherein the battery cell unit 200 is located between the upper cover and the shell 100, and the battery cell unit 200 is disposed in the shell 100, and the upper cover is connected to the shell 100. The shell 100 in this embodiment has high structural strength and simple structure, thereby improving the protection effect of the battery cell unit 200 and improving the safety of the battery pack 300. In addition, the number of parts is reduced, and the weight of the shell 100 is reduced, thereby improving the endurance of the battery pack 300.

[0047] Please refer to Figure 1-Figure 6 , Figure 2 A schematic diagram of the structure of the bottom plate, the ring beam and the side beam 120 provided in an embodiment of the utility model; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 A schematic diagram of the structure of a housing 100 provided in an embodiment of the utility model; Figure 5 An exploded schematic diagram of a housing 100 provided in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the end plate 130 provided in an embodiment of the utility model. The housing 100 will be described in detail below:

[0048] The shell 100 includes a bottom shell 110, two side beams 120 and two end plates 130. The side beams 120 are connected to the bottom shell 110. The two side beams 120 and the two end plates 130 are all connected to the bottom shell 110 and are distributed around the bottom shell 110. The two side beams 120 are arranged opposite to each other, and the two end plates 130 are arranged opposite to each other. The two ends of each end plate 130 are respectively connected to one end of the two side beams 120. The two side beams 120 and the two end plates 130 together enclose a placement area for placing the battery cell unit 200. Among them, the side beam 120 is provided with at least one structural reinforcement part 121.

[0049] Specifically, in this embodiment, each side beam 120 is provided with a plurality of structural reinforcements 121. Each structural reinforcement 121 protrudes in the direction of another side beam 120. It can be understood that in this embodiment, the structural reinforcement 121 is formed by stamping, so that the structural strength of the housing 100 can be improved without adding additional structures, thereby reducing the weight of the housing 100, improving the safety of the battery pack 300, and improving the endurance of the battery pack 300.

[0050] In this embodiment, the structural reinforcement part 121 is a protrusion, and the protrusion protrudes in a direction away from the inner side of the bottom shell 110, thereby increasing the structural strength of the housing 100. In this embodiment, the structural reinforcement part 121 is provided with a plurality of protrusions, that is, a plurality of protrusions, and the plurality of protrusions are arranged at intervals to further improve the structural strength of the housing 100.

[0051] It can be understood that in other embodiments, the structural reinforcement portion 121 can also be a structure such as a groove.

[0052] In this embodiment, the two side beams 120 and the two end plates 130 are connected in sequence, so that the two side beams 120 and the two end plates 130 together enclose a placement area, and the placement area is used to place the battery cell unit 200, so as to achieve the positioning of the battery cell unit 200. The shell 100 has a simpler structure and a small number of parts, so that the weight of the shell 100 is reduced, thereby improving the cruising ability of the battery pack 300.

[0053] Furthermore, in this embodiment, the shell 100 further includes at least one reinforcing rod 140 , which is disposed on the bottom shell 110 , and the side beam 120 is provided with at least one avoidance groove 122 , which is used to allow the reinforcing rod 140 to pass through the side beam 120 .

[0054] In this embodiment, two reinforcing rods 140 are provided, and each side beam 120 is provided with two avoidance grooves 122, and each reinforcing rod 140 corresponds to one avoidance groove 122 on one side beam 120. The two ends of each reinforcing rod 140 pass through the corresponding avoidance grooves 122 on two different side beams 120, so that the end of the reinforcing rod 140 is connected to the ring beam of the bottom shell 110.

[0055] It should be noted that the bottom shell 110 includes a bottom plate and a ring beam, which is arranged along the edge of the bottom plate and connected to the bottom plate. The ring beam and the bottom plate together form a chamber for accommodating the side beam 120, the end plate 130 and the reinforcing rod 140. The reinforcing rod 140 is arranged on the bottom plate of the bottom shell 110.

[0056] The battery pack 300 improves the strength of the housing 100 by providing the reinforcing rod 140 , thereby improving the protection effect of the battery cells and further improving the safety of the battery pack 300 .

[0057] Please refer to Figure 1-Figure 7 , Figure 7 This is a schematic structural diagram of a support plate 150 provided in an embodiment of the utility model.

[0058] According to the above content, in order to improve the connection stability of the end plate 130, the shell 100 also includes two support plates 150, the end plate 130 is spaced apart from the outer edge of the bottom shell 110, and the support plate 150 is arranged between the end plate 130 and the outer edge of the bottom shell 110; the support plate 150 is connected to the bottom shell 110, and each support plate 150 is connected to an end plate 130.

[0059] It should be noted that the support plate 150 and the outer edge of the bottom shell 110 are spaced apart, wherein the spaced area between the support plate 150 and the outer edge of the bottom shell 110 is provided with electrical components.

[0060] It should be noted that the end plate 130 and the support plate 150 are arranged at an angle, so that a triangular hollow chamber is formed between the end plate 130, the support plate 150 and the bottom plate, thereby improving the stability of the end plate 130, that is, increasing the structural strength of the shell 100, thereby improving the protection effect of the battery cell unit 200 and improving the safety of the battery pack 300.

[0061] For further information, please refer to Figure 1-Figure 8 In this embodiment, the end plate 130 is provided with a plurality of protrusions 132, and the support plate 150 is provided with a plurality of recesses 152; the recessed direction of the recessed portion 152 is the same as the protruding direction of the protrusion 132, and the recessed portion 152 is recessed in a direction away from the end plate 130; each recessed portion 152 is sleeved on a protrusion 132.

[0062] Specifically, in this embodiment, a plurality of protrusions 132 are arranged at intervals along the length direction of the end plate 130, and a plurality of recesses 152 are arranged at intervals along the length direction of the support plate 150; wherein each recess 152 is sleeved on a protrusion 132. Thus, through the one-to-one correspondence between the protrusions 132 and the recesses 152, during the installation process, the support plate 150 can be accurately positioned after the end plate 130 is installed.

[0063] It can be understood that in the present embodiment, the end plate 130 is formed into the protrusion 132 by stamping, so that the structural strength of the housing 100 can be improved without adding any additional structure.

[0064] Similarly, the support plate 150 is formed with a recessed portion 152 by stamping, thereby improving the structural strength of the shell 100 without adding any additional structure, reducing the weight of the shell 100, improving the safety of the battery pack 300 and improving the battery life of the battery pack 300.

[0065] According to the above configuration, in this embodiment, the end plate 130 is provided with a plurality of first heat dissipation holes 131 spaced apart along its length direction; the support plate 150 is provided with a plurality of second heat dissipation holes 151 spaced apart along its length direction.

[0066] Specifically, at least one first heat dissipation hole 131 is provided between two adjacent protrusions 132. At least one second heat dissipation hole 151 is provided between two adjacent recesses 152. Thus, the battery pack 300 improves the heat dissipation effect of the battery cell by providing the first heat dissipation hole 131 and the second heat dissipation hole 151, thereby preventing the battery cell from being damaged due to excessive temperature of the battery cell.

[0067] It should be noted that, in this embodiment, the two first heat dissipation holes 131 are located between two adjacent first grooves, and the gap between the two first heat dissipation holes 131 is located in the middle of the end plate 130, so that the support plate 150 is connected to the middle of the end plate 130, thereby improving the connection stability between the end plate 130 and the support plate 150.

[0068] For further information, please refer to Figure 1-Figure 8 , Figure 8 A schematic diagram of the structure of a placement plate 170 provided for an embodiment of the utility model. In this embodiment, in this embodiment, the shell 100 also includes an inner lining plate 160 and a placement plate 170, and both the inner lining plate 160 and the placement plate 170 are located in the placement area. The inner lining plate 160 is connected to the bottom shell 110 and the side beam 120; the inner lining plate 160 is provided with a receiving groove 161, and the receiving groove 161 is used to receive the heating wire. The placement plate 170 is disposed on the bottom shell 110, and the placement plate 170 is connected to the inner lining plate 160; the placement plate 170 is provided with a plurality of receiving holes 171 arranged in an array, and each receiving hole 171 is used to receive a battery cell.

[0069] Specifically, the lining plate 160 is provided with a receiving groove 161, and the receiving groove 161 receives a heating wire, so that the heating wire is used to heat the battery cell unit 200. The placement plate 170 is provided with a plurality of receiving holes 171 arranged in an array, and each receiving hole 171 is used to receive a battery cell.

[0070] It should be noted that, in the present embodiment, the placement plate 170 is a blister box to reduce the weight of the battery pack 300 and improve the battery life of the battery pack 300 .

[0071] It should be noted that the end plates 130 and the inner lining plates 160 in this embodiment are not connected together. It can be understood that the installation order of the housing 100 in this embodiment is to first set the end plates 130 and the side beams 120 on the bottom shell 110, so that the two end plates 130 and the two side beams 120 enclose a placement area for placing the battery cell unit 200; then place the inner lining plate 160 and the placement plate 170 in the placement area; thereby achieving heating and positioning of the battery cell.

[0072] Therefore, the shell 100 in this embodiment utilizes the side beam 120, the end plate 130 and the inner lining plate 160 to replace the intermediate beam and the support frame and other structures in the prior art; thereby reducing the number of parts, reducing the weight of the shell 100, and ensuring the structural strength of the battery pack 300 while improving the endurance of the battery pack 300.

[0073] In summary, the working principle of the housing 100 of the battery pack 300 in this embodiment is as follows:

[0074] The shell 100 in this embodiment includes a bottom shell 110, two side beams 120 and two end plates 130. The side beams 120 are connected to the bottom shell 110. The two side beams 120 and the two end plates 130 are all connected to the bottom shell 110 and are distributed around the bottom shell 110. The two side beams 120 are arranged opposite to each other, and the two end plates 130 are arranged opposite to each other. The two ends of each end plate 130 are respectively connected to one end of the two side beams 120. The two side beams 120 and the two end plates 130 together enclose a placement area for placing the battery cell unit 200. Among them, the side beam 120 is provided with at least one structural reinforcement part 121.

[0075] The side beam 120 in the housing 100 is provided with a structural reinforcement part 121, which plays a role in strengthening the structural strength of the housing 100, thereby improving the protection effect of the battery cell unit 200 in the housing 100 and increasing the safety of the battery pack 300. The housing 100 positions the battery cell unit 200 through the side beam 120 and the end plate 130, and uses the side beam 120, the end plate 130 and the inner lining plate 160 to replace the intermediate beam and the support frame in the prior art; thereby reducing the number of parts, reducing the weight of the housing 100, and further improving the endurance of the battery pack 300.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A housing, characterized in that: include: Bottom shell; Two side beams and two end plates, the two side beams and the two end plates are connected to the bottom shell and are distributed around the bottom shell; the two side beams are arranged opposite to each other, and the two end plates are arranged opposite to each other; the two ends of each end plate are respectively connected to one end of the two side beams; The two side beams and the two end plates together enclose a placement area for placing the battery cell units; Wherein, the side beam is provided with at least one structural reinforcement portion; the structural reinforcement portion includes a protrusion, and the protrusion protrudes in a direction close to the placement area.

2. The housing according to claim 1, characterized in that: The housing further comprises at least one reinforcing rod, wherein the reinforcing rod is arranged on the bottom shell; The side beam is provided with at least one avoidance groove, and the avoidance groove is used to allow the reinforcing rod to pass through the side beam.

3. The housing according to claim 1, characterized in that: The shell also includes two support plates, the end plates are spaced apart from the outer edge of the bottom shell opposite to each other, and the support plates are arranged between the end plates and the outer edge of the bottom shell; the support plates are connected to the bottom shell, and each of the support plates is connected to one of the end plates.

4. The housing according to claim 3, characterized in that: The end plate is provided with a plurality of protrusions, and the support plate is provided with a plurality of recesses; the recessed direction of the recessed portion is the same as the protruding direction of the protruding portion, and the recessed portion is recessed in a direction away from the end plate; each of the recessed portions is sleeved on one of the protruding portions.

5. The housing according to claim 3, characterized in that: The support plate is spaced apart from the outer edge of the bottom shell, and the spaced area between the support plate and the outer edge of the bottom shell is used for placing electrical components.

6. The housing according to any one of claims 1 to 5, characterized in that: The shell further comprises an inner lining plate, the inner lining plate is located in the placement area, and the inner lining plate is connected to the bottom shell and the side beam; The inner lining plate is provided with a receiving groove, and the receiving groove is used for receiving the heating wire.

7. The housing according to claim 6, characterized in that: The shell further comprises a placement plate, the placement plate is located in the placement area, and the placement plate is connected to the lining plate; The placement plate is provided with a plurality of accommodating holes arranged in an array, and each of the accommodating holes is used to accommodate a battery cell.

8. The housing according to any one of claims 1 to 5, characterized in that: The end plate is provided with a plurality of first heat dissipation holes, and the plurality of first heat dissipation holes are arranged at intervals along the length direction of the end plate; The shell further comprises two support plates, the end plates are spaced apart from the outer edge of the opposite bottom shell, and the support plates are arranged between the end plates and the outer edge of the bottom shell; the support plates are connected to the bottom shell, and each of the support plates is connected to one of the end plates; The support plate is provided with a plurality of second heat dissipation holes, and the plurality of second heat dissipation holes are arranged at intervals along the length direction of the support plate.

9. A battery pack, characterized in that: include: A battery cell unit and a shell as described in any one of claims 1 to 8, wherein the battery pack is arranged in the shell.

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