Pull plate assembly, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a pull plate assembly, a battery pack and electric equipment. The pulling plate assembly comprises a pulling plate and a reinforcing piece, the reinforcing piece is arranged on one side of the pulling plate, and a cavity is formed between the reinforcing piece and the pulling plate; through the arrangement of the reinforcing piece, the pulling plate assembly has excellent torsional rigidity.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and more specifically, to a pull plate assembly, a battery pack and electrical equipment. Background Art

[0002] In the prior art, a pull plate assembly is generally provided on the upper portion of the battery pack to limit the displacement and expansion of the battery cells. However, the pull plate assembly currently used has poor torsional rigidity and is easily damaged.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0004] One purpose of the utility model is to provide a new technical solution for a pull plate assembly, a battery pack and an electrical device.

[0005] According to a first aspect of the utility model, a pull plate assembly is provided, wherein the pull plate assembly comprises:

[0006] Pull plate;

[0007] A reinforcing member is arranged on one side of the pulling plate, and a cavity is formed between the reinforcing member and the pulling plate.

[0008] Optionally, the reinforcement members are respectively provided at both ends of the pulling plate along the first direction.

[0009] Optionally, the reinforcement member is flush with both ends of the pulling plate along the first direction.

[0010] Optionally, two ends of the pull plate along the second direction are used to be fixed to end plates of the battery pack, and the reinforcement extends to two ends of the pull plate along the second direction.

[0011] Optionally, a plurality of reinforcing members are included, and the plurality of reinforcing members are arranged on the pulling plate at intervals along the first direction.

[0012] Optionally, the reinforcement member includes a first reinforcement plate, a second reinforcement plate and a third reinforcement plate, one end of the second reinforcement plate is connected to the first reinforcement plate, and the other end of the second reinforcement plate is connected to the third reinforcement plate;

[0013] The first reinforcing plate, the second reinforcing plate, the third reinforcing plate and the pulling plate together enclose the cavity.

[0014] Optionally, the material of the reinforcement includes one of aluminum, magnesium and steel.

[0015] Optionally, the pull plate assembly further includes a filling piece, and the filling piece is disposed in the cavity.

[0016] Optionally, the filling piece includes one of foamed rubber, honeycomb aluminum and foamed aluminum.

[0017] Optionally, the pulling plate assembly further comprises an insulating film, wherein the insulating film is arranged on a side of the pulling plate facing away from the reinforcing member.

[0018] Optionally, the insulating film includes a first insulating film and a second insulating film, and the first insulating film and the second insulating film are respectively arranged at two ends of the pulling plate along the first direction.

[0019] According to a second aspect of the utility model, a battery pack is provided, comprising a tray, a battery pack and a pull plate assembly as described in any one of the first aspects, wherein the battery pack is arranged on the tray, and the pull plate assembly is arranged on a side of the battery pack away from the tray.

[0020] Optionally, the battery pack further includes end plates, the end plates are fixed to two ends of the battery pack along the second direction, and two ends of the pull plate assembly along the second direction are fixed to the end plates.

[0021] According to a third aspect of the present invention, there is provided an electrical device, comprising the pull plate assembly as described in any one of the first aspect, or comprising the battery pack as described in any one of the second aspect.

[0022] According to the pull plate assembly provided in the embodiment of the utility model, the pull plate assembly includes a pull plate and a reinforcement, the reinforcement is arranged on one side of the pull plate, and a cavity is formed between the reinforcement and the pull plate; through the arrangement of the reinforcement, the pull plate assembly has excellent torsional rigidity.

[0023] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0025] Figure 1 It is a structural schematic diagram of a pull plate assembly in one embodiment of the utility model.

[0026] Figure 2 It is a side view of a pull plate assembly without a filling piece in an embodiment of the utility model.

[0027] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0028] Figure 4It is a side view of a pull plate assembly provided with a filling piece in one embodiment of the utility model.

[0029] Figure 5 It is a schematic structural diagram of a side of a pull plate assembly facing away from a reinforcement member in an embodiment of the utility model.

[0030] Figure 6 It is a structural schematic diagram of a side of a pull plate assembly facing away from a reinforcement member in another embodiment of the utility model.

[0031] Figure 7 It is a schematic diagram of the structure of a battery pack in one embodiment of the utility model.

[0032] Description of reference numerals:

[0033] 1. Pull plate assembly; 11. Pull plate; 12. Reinforcement member; 121. First reinforcing plate; 1211. First flange; 122. Second reinforcing plate; 123. Third reinforcing plate; 1231. Second flange; 13. Cavity; 14. Filler; 15. Insulation film; 151. First insulation film; 152. Second insulation film;

[0034] 2. Pallet;

[0035] 3. Battery pack;

[0036] 4. End plate. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0038] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0039] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "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 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 this application can be understood according to specific circumstances.

[0042] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] According to one embodiment of the present application, a pull plate assembly 1 is provided. Figures 1 to 7 The pull plate assembly 1 includes a pull plate 11 and a reinforcement member 12 . The reinforcement member 12 is disposed on one side of the pull plate 11 , and a cavity 13 is formed between the reinforcement member 12 and the pull plate 11 .

[0044] Specifically, Figure 7 As shown, the pull plate assembly 1 described in the embodiment of the present application is installed on the side of the battery pack 3 away from the tray 2 when in use, so as to limit the displacement or expansion of the battery cells in the battery pack 3.

[0045] Among them, Figure 1 and Figure 2 As shown, the pull plate assembly 1 includes a pull plate 11 and a reinforcement 12. The pull plate 11 is formed by stamping or cutting a plate made of at least one material of aluminum, magnesium and steel. The reinforcement 12 is arranged on the side of the pull plate 11 away from the battery pack 3, and a cavity 13 is formed between the reinforcement 12 and the pull plate 11. The cavity 13 can effectively offset the impact of external force, so that the pull plate 11 has higher strength and torsional rigidity.

[0046] Therefore, the embodiment of the present application significantly enhances the strength and torsional rigidity of the pull plate 11 by providing the reinforcement 12 on one side of the pull plate 11 to strengthen the structure of the pull plate 11, thereby effectively avoiding the problem that the pull plate 11 is easily broken when the battery cells in the battery pack 3 are displaced or expanded.

[0047] In one embodiment, the reinforcement members 12 are respectively disposed at two ends of the pulling plate 11 along the first direction.

[0048] Specifically, Figure 1 and Figure 2 As shown, the embodiment of the present application includes two reinforcement members 12, which are respectively arranged at the two ends of the pull plate 11 along the first direction. Therefore, when the battery cells in the battery pack 3 are displaced or expanded and squeeze the pull plate 11, since the reinforcement members 12 are arranged at both ends of the pull plate 11 along the first direction, the squeezing force on the pull plate 11 will be transmitted to the reinforcement members 12 located at the two ends of the pull plate 11 along the first direction, and then absorbed by the cavity 13 between the reinforcement members 12 and the pull plate 11, thereby effectively avoiding the problem of the pull plate 11 being easily broken.

[0049] It should be noted that the first direction and the second direction in the embodiment of the present application are two intersecting directions. For example, the first direction is the width direction of the pull plate assembly 1, or the first direction is the width direction of the battery pack; the second direction is the length direction of the pull plate assembly 1, or the second direction is the length direction of the battery pack.

[0050] In one embodiment, the reinforcement member 12 is flush with both ends of the pulling plate 11 along the first direction.

[0051] Specifically, Figure 1 and Figure 2 As shown, the embodiment of the present application arranges the reinforcement 12 to be flush with both ends of the pull plate 11 along the first direction, which can effectively prevent the reinforcement 12 from being squeezed and deformed by external force, and further improves the reliability and stability of the pull plate assembly 1.

[0052] In one embodiment, two ends of the pull plate 11 along the second direction are used to be fixed to the end plates 4 of the battery pack, and the reinforcement 12 extends to two ends of the pull plate 11 along the second direction.

[0053] Specifically, Figure 1 and Figure 7As shown, in the embodiment of the present application, the pull plate 11 is fixed to the end plate 4 of the battery pack at both ends along the second direction, so that the pull plate 11 and the end plate 4 can form a protective structure for the battery pack 3, thereby effectively improving the reliability and stability of the battery pack.

[0054] In addition, in the embodiment of the present application, the reinforcement 12 is extended to both ends of the pull plate 11 along the second direction to further enhance the structural strength of the pull plate 11 , so that the pull plate 11 has higher strength and torsional rigidity.

[0055] In one embodiment, the pulling plate assembly 11 includes a plurality of reinforcing members 12 , and the plurality of reinforcing members 12 are arranged on the pulling plate 11 at intervals along a first direction.

[0056] Specifically, the reinforcement members 12 of the embodiment of the present application may also be provided in plurality, and the plurality of reinforcement members 12 may be arranged at intervals along the first direction on the pull plate 11. The plurality of reinforcement members 12 may be provided in the number of 3, 4 or 5. For example, when there are 3 reinforcement members 12, the 3 reinforcement members 12 are arranged at intervals on the side of the pull plate 11 away from the battery pack 3, so as to further improve the absorption of the extrusion force of the pull plate 11 by the cavity 13, thereby effectively ensuring the reliability and stability of the pull plate assembly 1.

[0057] In one embodiment, the reinforcement member 12 includes a first reinforcement plate 121, a second reinforcement plate 122 and a third reinforcement plate 123, one end of the second reinforcement plate 122 is connected to the first reinforcement plate 121, and the other end of the second reinforcement plate 122 is connected to the third reinforcement plate 123; the first reinforcement plate 121, the second reinforcement plate 122, the third reinforcement plate 123 and the pulling plate 11 together form the cavity 13.

[0058] Specifically, Figure 3 As shown, in the embodiment of the present application, the first reinforcing plate 121 has a first flange 1211, which extends toward the side of the first reinforcing plate 121 away from the second reinforcing plate 122, and the third reinforcing plate 123 has a second flange 1231, which extends toward the side of the third reinforcing plate 123 away from the second reinforcing plate 122, so that the first reinforcing plate 121, the second reinforcing plate 122 and the third reinforcing plate 123 form an I-shaped reinforcement member.

[0059] Among them, since the cross-sectional inertia moment of the “X”-shaped reinforcement is large and the force-bearing performance is high, and a cavity 13 is formed between the “X”-shaped reinforcement and the pull plate 11, it can effectively offset the impact of external force on the pull plate 11, so that the pull plate 11 has higher strength and torsional stiffness, thereby effectively improving the reliability and stability of the pull plate assembly 1, and further extending the service life of the pull plate assembly 1.

[0060] In addition, the first flange 1211 and the second flange 1231 of the embodiment of the present application are used to be fixedly connected to the pull plate 11. Among them, the first flange 1211 and the pull plate 11, and the second flange 1231 and the pull plate 11 can be welded, screwed or bonded, and those skilled in the art can choose according to actual needs, and the present application does not make any specific restrictions here.

[0061] Furthermore, in the embodiment of the present application, the first flange 1211 of the first reinforcing plate 121 may also extend toward one side of the second reinforcing plate 122, and the second flange 1231 of the third reinforcing plate 123 may also extend toward one side of the second reinforcing plate 122, so that the first reinforcing plate 121, the second reinforcing plate 122 and the third reinforcing plate 123 can form a U-shaped reinforcement.

[0062] The first flange 1211 and the second flange 1231 of the U-shaped reinforcement may be disconnected or fixedly connected as one.

[0063] Of course, the reinforcement member 12 described in the embodiment of the present application may also be a V-shaped, U-shaped, trapezoidal, C-shaped or other structure. Those skilled in the art may choose according to actual needs, and the present application does not make any specific restrictions here.

[0064] In one embodiment, the reinforcement member 12 is made of one of aluminum, magnesium, and steel.

[0065] Specifically, since aluminum and magnesium have lower densities, the reinforcement 12 made of aluminum and magnesium can significantly reduce the weight of the pull plate assembly, thereby better meeting the demand for lightweight battery packs.

[0066] In addition, since steel has high strength, ductility, heat resistance and corrosion resistance, the reinforcement 12 made of steel can better meet the torsional rigidity requirements of the pull plate assembly and has high strength.

[0067] In one embodiment, the pull plate assembly 1 further includes a filling piece 14 , and the filling piece 14 is disposed in the cavity 13 .

[0068] Specifically, Figure 4As shown, in the embodiment of the present application, by arranging the filling member 14 in the cavity 13, it is possible to ensure that the pull plate assembly 1 has a higher torsional rigidity and further have a higher strength.

[0069] In one embodiment, the filler 14 includes one of foamed rubber, honeycomb aluminum and foamed aluminum.

[0070] Specifically, since materials such as foamed plastic, honeycomb aluminum or foamed aluminum have excellent ultra-lightness and temperature resistance, the embodiment of the present application sets the filler 14 to foamed plastic, honeycomb aluminum or foamed aluminum, which can make the pull plate assembly have lighter weight and higher temperature resistance, thereby better meeting the requirements of lightweight and high temperature resistance of the battery pack.

[0071] In one embodiment, the pulling plate assembly 1 further includes an insulating film 15 , and the insulating film 15 is disposed on a side of the pulling plate 11 facing away from the reinforcing member 12 .

[0072] Specifically, the battery pack 3 described in the embodiment of the present application includes a pole and an electrical connector, and the pole and the electrical connector are arranged at both ends of the tray 2 along the first direction. Therefore, after the pull plate assembly 1 is installed on the side of the battery pack 3 away from the tray 2, the pole and the electrical connector will contact the side of the pull plate 11 away from the reinforcement 12.

[0073] Furthermore, if Figure 5 As shown, in order to prevent the pole and the electrical connector from short-circuiting or leaking, the embodiment of the present application is further provided with the insulating film 15 on the side of the pull plate 11 away from the reinforcement 12. The insulating film 15 can completely cover the side of the pull plate 11 away from the reinforcement 12, thereby effectively improving the insulation performance of the pull plate assembly 1 under high temperature conditions.

[0074] The insulating film 15 described in the embodiment of the present application may be made of at least one of silicon oxide, silicon nitride, aluminum oxide, aluminum nitride, polyimide, polyethylene, polyvinylidene fluoride and polytetrafluoroethylene.

[0075] In one embodiment, the insulating film 15 includes a first insulating film 151 and a second insulating film 152 , and the first insulating film 151 and the second insulating film 152 are respectively disposed at two ends of the pulling plate 11 along the first direction.

[0076] Specifically, Figure 6As shown, since the poles and the electrical connectors of the battery pack described in the embodiment of the present application are arranged at both ends of the tray 2 along the first direction, only the first insulating film 151 and the second insulating film 152 can be set under the condition that the insulation performance of the poles and the electrical connectors is met to cover the position where the pulling plate assembly 1 contacts the poles and the electrical connectors, thereby effectively reducing the cost of the pulling plate assembly 1 and improving the economy of the pulling plate assembly 1.

[0077] According to another embodiment of the present application, a battery pack is provided, which includes a tray 2, a battery group 3 and the pull plate assembly 1 described in the embodiment of the present application, wherein the battery group 3 is arranged on the tray 2, and the pull plate assembly 1 is arranged on the side of the battery group 3 away from the tray 2.

[0078] Specifically, Figure 7 As shown, the battery pack of the embodiment of the present application is installed on the tray 2 by installing the battery pack 3, and then installing the pull plate assembly 1 on the side of the battery pack 3 away from the tray 2, so that the pull plate assembly 1 can effectively limit the displacement or expansion of the battery cells in the battery pack 3. In addition, since a cavity 13 is formed between the reinforcement 12 and the pull plate 11, the cavity 13 can effectively offset the impact of external forces, so that the pull plate 11 has higher strength and torsional rigidity, thereby effectively avoiding the problem that the pull plate 11 is easily broken when the battery cells in the battery pack 3 are displaced or expanded.

[0079] Optionally, the battery pack further includes an end plate 4 , the end plate 4 is fixed to two ends of the battery group 3 along the second direction, and two ends of the pull plate assembly 1 along the second direction are fixed to the end plate 4 .

[0080] Specifically, Figure 7 As shown, the embodiment of the present application fixes the end plate 4 to the two ends of the battery pack 3 along the second direction, and fixes the two ends of the pull plate assembly 1 along the second direction to the end plate 4, so that the pull plate assembly 1 and the end plate 4 together form a protective structure of the battery pack 3, thereby effectively improving the reliability and stability of the battery pack.

[0081] According to another embodiment of the present application, an electrical device is provided, which includes the pull plate assembly 1 described in the embodiment of the present application, or includes the battery pack described in the embodiment of the present application.

[0082] The electrical equipment includes vehicles, smart phones, tablets, and laptop computers.

[0083] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0084] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A pull plate assembly, characterized in that: include: Pull plate (11); A reinforcing member (12), wherein the reinforcing member (12) is arranged on one side of the pulling plate (11), and a cavity (13) is formed between the reinforcing member (12) and the pulling plate (11).

2. The pull plate assembly according to claim 1, characterized in that: The reinforcement members (12) are respectively arranged at two ends of the pull plate (11) along the first direction.

3. The pull plate assembly according to claim 2, characterized in that: The reinforcing member (12) is flush with both ends of the pulling plate (11) along the first direction.

4. The pull plate assembly according to claim 1, characterized in that: The two ends of the pull plate (11) along the second direction are used to be fixed to the end plates (4) of the battery pack, and the reinforcement (12) extends to the two ends of the pull plate (11) along the second direction.

5. The pull plate assembly according to claim 1, characterized in that: It comprises a plurality of reinforcing members (12), wherein the plurality of reinforcing members (12) are arranged at intervals along a first direction on the pulling plate (11).

6. The pull plate assembly according to claim 1, characterized in that: The reinforcing member (12) comprises a first reinforcing plate (121), a second reinforcing plate (122) and a third reinforcing plate (123), one end of the second reinforcing plate (122) being connected to the first reinforcing plate (121), and the other end of the second reinforcing plate (122) being connected to the third reinforcing plate (123); The first reinforcing plate (121), the second reinforcing plate (122), the third reinforcing plate (123) and the pulling plate (11) together enclose the cavity (13).

7. The pull plate assembly according to claim 1, characterized in that: The material of the reinforcement member (12) includes one of aluminum, magnesium and steel.

8. The pull plate assembly according to any one of claims 1 to 7, characterized in that: The pull plate assembly (1) further comprises a filling piece (14), wherein the filling piece (14) is arranged in the cavity (13).

9. The pull plate assembly according to claim 8, characterized in that: The filling piece (14) comprises one of foamed rubber, honeycomb aluminum and foamed aluminum.

10. The pull plate assembly according to claim 1, characterized in that: The pulling plate assembly (1) further comprises an insulating film (15), wherein the insulating film (15) is arranged on a side of the pulling plate (11) facing away from the reinforcing member (12).

11. The pull plate assembly according to claim 10, characterized in that: The insulating film (15) comprises a first insulating film (151) and a second insulating film (152), wherein the first insulating film (151) and the second insulating film (152) are respectively arranged at two ends of the pulling plate (11) along a first direction.

12. A battery pack, characterized in that: The invention comprises a tray (2), a battery pack (3) and a pull plate assembly (1) according to any one of claims 1 to 11, wherein the battery pack (3) is arranged on the tray (2), and the pull plate assembly (1) is arranged on a side of the battery pack (3) facing away from the tray (2).

13. The battery pack according to claim 12, characterized in that: The battery pack further comprises an end plate (4), wherein the end plate (4) is fixed to two ends of the battery group (3) along the second direction, and the two ends of the pull plate assembly (1) along the second direction are fixed to the end plate (4).

14. An electrical device, characterized in that: It comprises the pull plate assembly (1) as claimed in any one of claims 1 to 11, or comprises the battery pack as claimed in claim 12 or 13.

Images