Battery frame, battery pack and new energy automobile

Abstract

The embodiment of the utility model provides a battery frame, a battery pack and a new energy automobile, and relates to the technical field of power batteries. The battery frame comprises a battery shell, a first end plate, a second end plate and a plurality of plastic pressing pieces, and the first end plate and the second end plate are arranged on the battery shell at intervals in the first direction; the plurality of plastic pressing pieces are arranged at intervals in the second direction, the plurality of plastic pressing pieces and the battery shell are arranged at intervals in the third direction, and the two ends of the plurality of plastic pressing pieces are bonded with the first end plate and the second end plate respectively; wherein a battery accommodating cavity is formed among the battery shell, the first end plate, the second end plate and the plurality of plastic pressing pieces, and the first direction, the second direction and the third direction are vertical in pairs. According to the battery frame, the production cost can be reduced, the assembly efficiency is improved, and the overall structural strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a battery frame, a battery pack and a new energy vehicle. Background Art

[0002] With the rapid development of new energy vehicles, the battery packs that power them are also developing at an increasingly rapid pace. To achieve higher energy density in battery packs, the module structure is often eliminated, and the cells are directly installed in the housing, secured with end plates and pressure bars.

[0003] However, the moldings in the prior art are usually aluminum moldings, which use a lot of aluminum and have high manufacturing costs. In addition, the moldings and the end plates are fixed with bolts, which also increases costs and leads to low assembly efficiency. In addition, there is a risk of back-twisting of the bolts, which affects the overall structural strength. Utility Model Content

[0004] The purpose of the present utility model is to provide a battery frame, a battery pack and a new energy vehicle, which can reduce production costs, improve assembly efficiency and enhance overall structural strength.

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

[0006] In a first aspect, the present invention provides a battery frame, comprising:

[0007] Battery housing;

[0008] A first end plate and a second end plate, wherein the first end plate and the second end plate are spaced apart and arranged in the battery housing along a first direction; and

[0009] a plurality of plastic pressing members, the plurality of plastic pressing members being spaced apart along the second direction, and the plurality of plastic pressing members and the battery housing being spaced apart along the third direction, and two ends of the plurality of plastic pressing members being bonded to the first end plate and the second end plate, respectively;

[0010] A battery accommodating cavity is formed between the battery shell, the first end plate, the second end plate and the plurality of plastic pressing members, and the first direction, the second direction and the third direction are perpendicular to each other.

[0011] In an optional embodiment, a first enlarged portion and a second enlarged portion are respectively provided at both ends of the plurality of plastic pressing members, and a plurality of first extension portions are provided on a side of the first end plate away from the battery housing, the plurality of first extension portions are spaced apart along the second direction and correspond one-to-one to and are bonded to the plurality of first enlarged portions;

[0012] A plurality of second extension portions are provided on a side of the second end plate away from the battery housing. The plurality of second extension portions are spaced apart along the second direction and correspond to and are bonded to the plurality of second expansion portions one by one.

[0013] In an optional embodiment, the battery frame further includes a reinforcing beam, which is disposed in the battery housing and located between the first end plate and the second end plate to separate the battery accommodating cavity into a first accommodating cavity and a second accommodating cavity; the multiple plastic pressing parts are simultaneously bonded to the reinforcing beam.

[0014] In an optional embodiment, the battery frame further includes a plurality of bolts, which are simultaneously passed through the reinforcing beam and are connected and fixed to the battery housing.

[0015] In an optional embodiment, the plastic pressing member is provided with an avoidance gap, and the bolt is located at the avoidance gap.

[0016] In an optional embodiment, the battery frame further includes a plurality of support members, which are spaced apart on the battery housing along the second direction, and the plurality of support members and the plurality of plastic pressing members are spaced apart and correspond one to one along the third direction.

[0017] In an optional embodiment, the plastic pressing member is a flat-plate pressing member, and the flat-plate pressing member is used to press and fix the tops of two adjacent battery packs at the same time.

[0018] In an optional embodiment, the plastic pressing member is made of epoxy resin.

[0019] In a second aspect, the present invention provides a battery pack comprising a plurality of battery packs and a battery frame according to any one of the aforementioned embodiments, wherein the plurality of battery packs are accommodated in the battery accommodating cavity, and the plurality of plastic pressing members are simultaneously bonded to the plurality of battery packs.

[0020] In a third aspect, the present invention provides a new energy vehicle comprising the battery pack described in the aforementioned embodiment.

[0021] The beneficial effects of the embodiments of the present utility model include:

[0022] The battery frame includes a battery shell, a first end plate, a second end plate and a plurality of plastic pressing members, wherein the first end plate and the second end plate are spaced apart in the battery shell along the first direction; the plurality of plastic pressing members are spaced apart along the second direction, and the plurality of plastic pressing members are spaced apart from the battery shell along the third direction, and the two ends of the plurality of plastic pressing members are bonded to the first end plate and the second end plate respectively; wherein a battery accommodating cavity is formed between the battery shell, the first end plate, the second end plate and the plurality of plastic pressing members, and the first direction, the second direction and the third direction are perpendicular to each other. By replacing the aluminum strip with a plastic pressing member, the production cost can be reduced; and by bonding the plastic pressing member to the first end plate and the second end plate, there is no need to use fasteners such as bolts, thereby further reducing the production cost while improving the assembly efficiency; in addition, there is no risk of bolt back-twisting, and the overall structural strength of the battery frame can be improved by bonding and fixing.

[0023] The battery pack includes a battery frame, which has all the benefits of the battery frame.

[0024] The new energy vehicle includes a battery pack, which has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention 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 any creative work.

[0026] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of the structure of a battery pack provided in an embodiment of the present utility model;

[0028] Figure 3 A schematic structural diagram of a battery frame provided in an embodiment of the present utility model;

[0029] Figure 4 An exploded view of a battery frame provided in an embodiment of the present utility model;

[0030] Figure 5 A schematic structural diagram of a plastic pressing member provided in an embodiment of the present utility model;

[0031] Figure 6 A schematic structural diagram of the first end plate and the second end plate provided in an embodiment of the present utility model.

[0032] Icon: 1000-new energy vehicle; 1100-battery pack; 100-battery frame; 10-battery housing; 20-first end plate; 21-first extension; 30-second end plate; 31-second extension; 40-plastic pressing part; 41-first expansion part; 42-second expansion part; 43-avoidance gap; 50-battery accommodating chamber; 51-first accommodating chamber; 52-second accommodating chamber; 60-reinforcement beam; 70-bolt; 80-support member; 200-battery pack; 210-battery cell; 1200-vehicle body. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] 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 claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0035] 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, it does not need to be further defined or explained in subsequent drawings.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0038] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] As described in the background, to achieve a higher energy density in battery packs, the module structure is typically eliminated, and the cells are directly installed in the housing, secured with end plates and pressure strips. However, the pressure strips used in existing technologies are typically aluminum, which uses a lot of aluminum and is expensive to manufacture. Furthermore, the pressure strips are bolted to the end plates, which increases costs and reduces assembly efficiency. Furthermore, the bolts pose a risk of back-twisting, affecting the overall structural strength.

[0040] Based on this, please refer to Figures 1-6 The embodiments of the present invention provide a battery frame 100, a battery pack 1100 and a new energy vehicle 1000, which can effectively improve the above-mentioned technical problems, that is, they can reduce production costs, improve assembly efficiency, and enhance overall structural strength.

[0041] It should be noted that the first direction mentioned in the following content is Figures 1-6 The X direction is shown in the second direction. Figures 1-6 The Y direction is shown in the figure, and the third direction is Figures 1-6 The battery frame 100, the battery pack 1100 and the new energy vehicle 1000 will be described in detail below.

[0042] Please refer to Figure 1 , Figure 1 The structural diagram of the new energy vehicle 1000 provided in this embodiment is combined with Figure 1 The new energy vehicle 1000 includes a battery pack 1100 and a vehicle body 1200 . The battery pack 1100 is arranged on the vehicle body 1200 . The battery pack 1100 serves as an energy source to provide electrical energy to the vehicle body 1200 , thereby realizing various functions of the vehicle body 1200 .

[0043] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of the battery pack 1100 provided in this embodiment, combined with Figure 2 The battery pack 1100 includes a battery frame 100 and a plurality of battery packs 200 , and the plurality of battery packs 200 are disposed in the battery frame 100 .

[0044] Specifically, please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic structural diagram of the battery frame 100 provided in this embodiment. Figure 4 The exploded view of the battery frame 100 provided in this embodiment, combined with Figure 3 and Figure 4 The battery frame 100 includes a battery case 10, a first end plate 20, a second end plate 30 and a plurality of plastic pressing members 40. The first end plate 20 and the second end plate 30 are spaced apart on the battery case 10 along a first direction; the plurality of plastic pressing members 40 are spaced apart along a second direction, and the plurality of plastic pressing members 40 and the battery case 10 are spaced apart along a third direction, and the two ends of the plurality of plastic pressing members 40 are respectively bonded to the first end plate 20 and the second end plate 30; wherein, a battery accommodating cavity 50 is formed between the battery case, the first end plate 20, the second end plate 30 and the plurality of plastic pressing members 40, and the first direction, the second direction and the third direction are perpendicular to each other.

[0045] It is easy to understand that by replacing the aluminum pressure strip with a plastic compression piece, the production cost can be reduced; and by bonding the plastic compression piece 40 to the first end plate 20 and the second end plate 30, there is no need to use fasteners such as bolts 70, thereby further reducing the production cost while improving the assembly efficiency; in addition, there is no risk of backtightening of the bolt 70, and the overall structural strength of the battery frame 100 can be improved by bonding and fixing.

[0046] Combine Figure 2-Figure 4 , multiple battery packs 200 are accommodated in the battery accommodating cavity 50, and multiple plastic pressing parts 40 are bonded to the multiple battery packs 200 at the same time. In this way, the multiple plastic pressing parts 40 can be bonded and fixed to the battery pack 200, the first end plate 20 and the second end plate 30 at the same time, thereby further improving the overall structural strength of the battery pack 1100 and enhancing the stability of the battery pack 1100 during transportation or after being installed on the vehicle body 1200.

[0047] It should be noted that in this embodiment, multiple battery packs 200 are arranged in sequence along the second direction, and each battery pack 200 includes multiple battery cells 210 arranged along the first direction. As will be readily understood, each battery pack 200 is provided with at least one plastic pressing member 40, i.e., at least one plastic pressing member 40 compresses and secures each battery pack 200.

[0048] For further information, please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic structural diagram of the plastic pressing member 40 provided in this embodiment. Figure 6The schematic diagram of the structure of the first end plate 20 and the second end plate 30 provided in this embodiment, combined with Figure 5 and Figure 6 A first expansion portion 41 and a second expansion portion 42 are respectively provided at both ends of the multiple plastic pressing parts 40, and a plurality of first extension portions 21 are provided on the side of the first end plate 20 away from the battery casing 10. The plurality of first extension portions 21 are arranged at intervals along the second direction and correspond one-to-one to and are bonded to the plurality of first expansion portions 41; a plurality of second extension portions 31 are provided on the side of the second end plate 30 away from the battery casing 10. The plurality of second extension portions 31 are arranged at intervals along the second direction and correspond one-to-one to and are bonded to the plurality of second expansion portions 42.

[0049] By providing the first expansion portion 41 and the second expansion portion 42, the contact area with the first end plate 20 and the second end plate 30 can be increased, thereby increasing the range of glue bonding and further improving the connection strength between the plastic pressing part 40 and the first end plate 20 and the second end plate 30, thereby improving the overall stability of the battery frame 100.

[0050] Please continue to combine Figure 3 and Figure 4 In order to further improve the structural strength, the battery frame 100 also includes a reinforcing beam 60. The reinforcing beam 60 is arranged in the battery housing 10 and is located between the first end plate 20 and the second end plate 30 to separate the battery accommodating cavity 50 into a first accommodating cavity 51 and a second accommodating cavity 52; multiple plastic pressing members 40 are bonded to the reinforcing beam 60 at the same time.

[0051] It should be noted that in this embodiment, the battery frame 100 further includes a plurality of bolts 70, which are simultaneously passed through the reinforcing beam 60 and fixedly connected to the battery housing 10. In other words, in this embodiment, the reinforcing beam 60 is connected and fixed to the battery housing 10 by means of the bolts 70. Of course, in other embodiments, the reinforcing beam 60 and the battery housing 10 can also be connected and fixed by welding or adhesive bonding.

[0052] Please combine Figure 3-Figure 5 To avoid the bolts 70 located on the reinforcing beam 60, the plastic compression member 40 is provided with an avoidance notch 43, and the bolts 70 are located in the avoidance notch 43. It should be noted that in this embodiment, each plastic compression member 40 has an avoidance notch 43 on both sides, and accordingly, each plastic compression member 40 corresponds to two bolts 70; that is, two bolts 70 are provided on both sides of each plastic compression member 40, and both bolts 70 pass through the reinforcing beam 60 and fix to the battery housing 10 at the same time.

[0053] Of course, in other embodiments, the plastic compression member 40, the number of relief notches 43 provided therein, and the corresponding arrangement of the bolts 70 can be determined based on the actual design requirements of the battery pack 1100. It is understood that in some embodiments, the relief notches 43 may not be provided, that is, the multiple bolts 70 are dispersed and do not contact the plastic compression member 40.

[0054] It should be noted that, in this embodiment, the plastic pressing member 40 is specifically a flat pressing member, which is used to simultaneously press and fix the tops of two adjacent battery packs 200. Figure 2 As shown, the tops of any two adjacent battery packs 200 are secured together by a flat plastic compression member 40. Of course, in other embodiments, the plastic compression member 40 may be T-shaped or in other shapes, that is, the vertical plate of the T-shaped compression member is disposed between two adjacent battery packs 200 to separate them, while the horizontal plate is bonded and secured to the tops of both battery packs 200.

[0055] Furthermore, it should be noted that the plastic pressing member 40 in this embodiment is specifically made of epoxy resin, which has the characteristics of strong bonding strength, good chemical resistance, low shrinkage force, good electrical insulation, good stability, high mechanical properties, and high heat resistance. Of course, in other embodiments, the plastic pressing member 40 may also be made of a mixture of PC (polycarbonate) and ABS (acrylonitrile-butadiene-styrene copolymer), or a mixture of PA (nylon) and GF (glass fiber), etc.

[0056] Please combine Figure 2-Figure 4 In this embodiment, the battery frame 100 further includes a plurality of support members 80 spaced apart along the second direction within the battery housing 10. The plurality of support members 80 and the plurality of plastic compression members 40 are spaced apart along the third direction and correspond one to one. The arrangement of the support members 80 and the plastic compression members 40 allows for simultaneous mounting and securing of the top and bottom of the battery cells 210, thereby improving the mounting stability of the battery cells 210 and, in turn, the overall structural stability of the battery pack 1100.

[0057] In summary, an embodiment of the present invention provides a battery frame 100, a battery pack 1100 and a new energy vehicle 1000, wherein the battery frame 100 includes a battery shell 10, a first end plate 20, a second end plate 30 and a plurality of plastic pressing members 40, wherein the first end plate 20 and the second end plate 30 are spaced apart on the battery shell 10 along a first direction; the plurality of plastic pressing members 40 are spaced apart along a second direction, and the plurality of plastic pressing members 40 and the battery shell 10 are spaced apart along a third direction, and the two ends of the plurality of plastic pressing members 40 are respectively bonded to the first end plate 20 and the second end plate 30; wherein a battery accommodating cavity 50 is formed between the battery shell, the first end plate 20, the second end plate 30 and the plurality of plastic pressing members 40, and the first direction, the second direction and the third direction are perpendicular to each other. By replacing the aluminum pressure strip with a plastic compression piece, the production cost can be reduced; and by bonding the plastic compression piece 40 to the first end plate 20 and the second end plate 30, there is no need to use fasteners such as bolts 70, thereby further reducing the production cost while improving the assembly efficiency; in addition, there is no risk of backtightening of the bolt 70, and the overall structural strength of the battery frame 100 can be improved by bonding and fixing.

[0058] The battery pack 1100 includes the battery frame 100 and has all the functions and benefits of the battery frame 100 .

[0059] The new energy vehicle 1000 includes a battery pack 1100 , which has all the functions and beneficial effects of the battery pack 1100 .

[0060] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery frame, characterized in that: include: Battery housing (10); a first end plate (20) and a second end plate (30), wherein the first end plate (20) and the second end plate (30) are arranged on the battery housing (10) at intervals along a first direction; as well as a plurality of plastic pressing members (40), the plurality of plastic pressing members (40) being spaced apart along a second direction, and the plurality of plastic pressing members (40) and the battery housing (10) being spaced apart along a third direction, and the two ends of the plurality of plastic pressing members (40) being bonded to the first end plate (20) and the second end plate (30), respectively; A battery accommodating cavity (50) is formed between the battery shell, the first end plate (20), the second end plate (30) and the plurality of plastic pressing members (40), and the first direction, the second direction and the third direction are perpendicular to each other.

2. The battery frame according to claim 1, characterized in that The two ends of the plurality of plastic pressing members (40) are respectively provided with a first enlarged portion (41) and a second enlarged portion (42); a side of the first end plate (20) away from the battery housing (10) is provided with a plurality of first extension portions (21); the plurality of first extension portions (21) are arranged at intervals along the second direction and correspond one-to-one to and are bonded to the plurality of first enlarged portions (41); A plurality of second extension portions (31) are provided on a side of the second end plate (30) away from the battery housing (10), and the plurality of second extension portions (31) are spaced apart along the second direction and correspond one-to-one to and are bonded to the plurality of second expansion portions (42).

3. The battery frame according to claim 1, characterized in that The battery frame (100) further includes a reinforcing beam (60), which is arranged on the battery housing (10) and located between the first end plate (20) and the second end plate (30) so as to separate the battery accommodating cavity (50) into a first accommodating cavity (51) and a second accommodating cavity (52); the plurality of plastic pressing members (40) are simultaneously bonded to the reinforcing beam (60).

4. The battery frame according to claim 3, characterized in that The battery frame (100) further comprises a plurality of bolts (70), which are simultaneously passed through the reinforcing beam (60) and are connected and fixed to the battery housing (10).

5. The battery frame according to claim 4, characterized in that: The plastic pressing piece (40) is provided with an avoidance notch (43), and the bolt (70) is located at the avoidance notch (43).

6. The battery frame according to claim 1, characterized in that The battery frame (100) further comprises a plurality of support members (80), the plurality of support members (80) being spaced apart on the battery housing (10) along the second direction, and the plurality of support members (80) and the plurality of plastic pressing members (40) being spaced apart and corresponding one to one along the third direction.

7. The battery frame according to claim 1, characterized in that The plastic pressing piece (40) is a flat-plate pressing piece, and the flat-plate pressing piece is used to simultaneously press and fix the tops of two adjacent battery packs (200).

8. The battery frame according to claim 1, characterized in that The material of the plastic pressing member (40) is epoxy resin.

9. A battery pack, characterized in that: The invention comprises a plurality of battery packs (200) and a battery frame (100) according to any one of claims 1 to 8, wherein the plurality of battery packs (200) are accommodated in the battery accommodating cavity (50), and the plurality of plastic pressing members (40) are simultaneously bonded to the plurality of battery packs (200).

10. A new energy vehicle, characterized in that: Comprising the battery pack (1100) as claimed in claim 9.

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