High-capacity forklift battery structure

Abstract

The utility model provides a high-capacity forklift battery structure, and relates to the technical field of batteries. The embodiment of the utility model provides a high-capacity forklift battery structure which comprises a box body with a cavity; the supporting plate is detachably arranged in the cavity and divides the cavity into a first chamber and a second chamber, and a first battery module and a second battery module are arranged in the first chamber and the second chamber respectively; wherein at least two positioning plates are arranged on the supporting plate, each positioning plate is provided with a positioning surface, the positioning surfaces protrude out of the plane where the supporting plate is located, and the first battery modules are detachably arranged on the positioning surfaces.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a large-capacity forklift battery structure. Background Art

[0002] High-capacity forklift batteries use battery packs as energy storage units, with charging and discharging capabilities. They are used to power forklifts during certain operations. Forklift power batteries typically consist of components such as the battery housing, battery modules, inverter, and battery management system (BMS).

[0003] Prior art, such as the Chinese patent application with application number CN202321597259.X, discloses an unmanned forklift battery system and an unmanned forklift, including a battery box and a battery assembly, wherein a accommodating space is formed in the battery box, and the battery assembly is installed in the accommodating space; the battery assembly includes a fastener and a plurality of battery cells, and the inner wall of the battery box is coated with a thermally conductive adhesive layer. The plurality of battery cells are arranged in a stacked manner and bundled into an integral battery module by the fasteners, and the battery module is accommodated in the accommodating space and abuts against the thermally conductive adhesive layer; wherein the accommodating space is filled with an insulating cooling medium, and the insulating cooling medium can completely immerse the battery module.

[0004] Conventional large-capacity forklift power battery modules are large and heavy, making them inconvenient to install and debug. In addition, it is difficult to replace faulty BMS and batteries, and disassembly and assembly take a long time and the installation cost is high. Utility Model Content

[0005] One of the technical problems to be solved by this application is that the modules of conventional large-capacity forklift power batteries in the prior art are large in size and weight, which makes them inconvenient to install and debug. In addition, it is difficult to replace faulty BMS and batteries, and the disassembly and assembly time is long and the installation cost is high.

[0006] In order to solve the above technical problems, an embodiment of the present application provides a large-capacity forklift battery structure, including: a box body, having a cavity; a support plate, which is detachably arranged in the cavity and divides the cavity into a first chamber and a second chamber, and a first battery module and a second battery module are respectively arranged in the first chamber and the second chamber; wherein, at least two positioning plates are arranged on the support plate, the positioning plate has a positioning surface, the positioning surface protrudes from the plane where the support plate is located, and the first battery module is detachably arranged on the positioning surface.

[0007] In some embodiments, the positioning plate includes a bottom plate, a top plate, and a connecting plate. The bottom plate is interconnected with the support plate, and the top plate is located above the support plate. The bottom plate and the top plate are connected to each other via the connecting plate, and the top and bottom plates are located on either side of the connecting plate. The positioning plate is connected to the support plate to provide support, and the top plate is used to support the first battery module. The connecting plate provides a certain gap between the bottom of the first battery module and the support plate to facilitate heat dissipation from the first battery module.

[0008] In some embodiments, reinforcing plates are provided between the connecting plate and the bottom plate, and between the connecting plate and the top plate. By providing the reinforcing plates, the overall structural strength of the positioning plate is improved, and the collapse of the top plate is avoided.

[0009] In some embodiments, the upper end surface of the top plate forms a positioning surface, and the positioning surface is parallel to the plane of the support plate. By making the upper end surface of the top plate parallel to the plane of the support plate, the bottom wall of the first battery module can be in contact with the top plate, thereby improving the stability of the placement of the first battery module.

[0010] In some embodiments, the first battery module and the second battery module are connected in series via a cable.

[0011] In some embodiments, the support plate and the box body are connected by a bolt assembly. The detachable connection between the support plate and the box body facilitates the disassembly of the support plate and the first battery module as a whole.

[0012] In some embodiments, the support plate is overlapped with the upper end of the second battery module. The second battery module provides support for the support plate, eliminating the need for separate installation of the support plate. This allows for faster disassembly of the first and second battery modules. A positioning plate is provided at the upper end of the support plate to provide sufficient space between the first and second battery modules for heat dissipation.

[0013] In some embodiments, a first fixing block is provided on an outer wall of the first battery module, and a first screw hole is provided through the first fixing block. A first through hole corresponding to the first screw hole is provided on the positioning plate. The first screw hole and the first through hole are used to pass a first bolt. The first fixing block, the first screw hole, and the first bolt facilitate quick removal and installation of the first battery module from the support plate.

[0014] In some embodiments, a second fixing block is provided on the outer wall of the second battery module, the second fixing block having a second screw hole, and a second through hole is provided on the inner wall of the second chamber corresponding to the second screw hole. The second screw hole and the second through hole are used to pass a second bolt. The second fixing block, the second screw hole, and the second bolt facilitate quick removal and installation of the second battery module from the housing.

[0015] In some embodiments, the upper end of the housing is open and has a removable cover. The battery management system for the first and second battery modules is mounted on the cover. By mounting the battery management system on the cover, only the battery management system needs to be removed during maintenance, allowing for debugging, maintenance, or replacement.

[0016] Through the above technical solution, the large-capacity forklift battery structure provided by this application has at least the following beneficial effects:

[0017] The cavity of the box is divided into two chambers by a support plate, and the battery is set as two battery modules located in the two chambers respectively. When one of the modules needs to be repaired and replaced, only the battery module to be operated needs to be disassembled. During the disassembly and assembly process, the first battery module and the second battery module are disassembled and assembled separately, which reduces the weight of a single disassembly and assembly and makes it easier to disassemble and assemble the battery modules. The first battery module and the second battery module are separated by a support plate to ensure the structural stability of the two battery modules after installation. A positioning plate is also provided on the support plate to increase the gap between the two battery modules, which facilitates heat dissipation of the battery modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the exploded structure of the battery structure disclosed in the embodiment of the present application;

[0020] Figure 2 It is a structural diagram of the support plate disclosed in the embodiment of the present application;

[0021] Figure 3 It is a three-dimensional schematic diagram of the first battery module and the second battery module disclosed in the embodiment of the present application.

[0022] Description of reference numerals:

[0023] 10. Box body; 20. Second battery module; 21. Second fixing block; 30. Support plate; 40. First battery module; 41. First fixing block; 50. Battery management system; 60. Cover plate; 70. Positioning plate; 71. Bottom plate; 72. Connecting plate; 73. Top plate; 74. Reinforcement plate; 75. Positioning surface. DETAILED DESCRIPTION

[0024] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present application, but are not intended to limit the scope of the present application. The present application may be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0025] The present application provides these embodiments to make this application thorough and complete, and to fully express the scope of this application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0026] It should be noted that, in the description of this application, unless otherwise specified, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are intended solely to facilitate the description of this application and simplify the description, and do not indicate or imply that the devices or components 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 application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0027] In addition, the terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the word include the elements listed after the word, and do not exclude the possibility of other elements being included.

[0028] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0029] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0031] Figure 1 It is a schematic diagram of the exploded structure of the battery structure disclosed in the embodiment of this application. Figure 2 It is a structural schematic diagram of the support plate disclosed in the embodiment of this application. Figure 3 It is a three-dimensional schematic diagram of the first battery module and the second battery module disclosed in the embodiment of the present application.

[0032] The present embodiment provides a high-capacity forklift battery structure, including a housing 10 having a cavity. A support plate 30 is removably disposed within the cavity, dividing the cavity into a first chamber and a second chamber, each of which houses a first battery module 40 and a second battery module 20. The support plate 30 is provided with at least two positioning plates 70, each having a positioning surface 75 protruding from the plane of the support plate 30. The first battery module 40 is removably mounted on the positioning surface 75.

[0033] The cavity of the box body 10 is divided into two chambers by the support plate 30, and the battery is set as two battery modules respectively located in the two chambers. When one of the modules needs to be repaired and replaced, only the battery module to be operated needs to be disassembled. During the disassembly and assembly process, the first battery module 40 and the second battery module 20 are disassembled and assembled separately, which reduces the weight of a single disassembly and assembly and makes it easier to disassemble and assemble the battery modules. The first battery module 40 and the second battery module 20 are separated by the support plate 30 to ensure the structural stability of the two battery modules after installation. A positioning plate 70 is also provided on the support plate 30. The positioning plate 70 increases the gap between the two battery modules to facilitate heat dissipation of the battery modules.

[0034] Specifically, the first chamber and the second chamber are arranged in a vertical direction, and the first chamber is located above the second chamber. During the installation process, the second battery module 20 is first installed in the box body 10, and then the support plate 30 is installed. After the support plate 30 is installed, the first battery module 40 is installed. The first battery module 40 and the second battery module 20 are connected to each other through a cable. The box body 10 is a hollow cubic structure, and the upper end of the box body 10 is a detachable structure. Positioning columns extending in the vertical direction can be provided on the inner wall of the box body 10, and card slots that are compatible with the positioning columns can be provided at the edge positions of the first battery module 40, the second battery module 20 and the support plate 30, so that they can play a guiding role when the first battery module 40, the second battery module 20 and the support plate 30 are installed from top to bottom. A support frame distributed in a ring shape can be provided on the inner wall of the second chamber to support the second battery module 20. The support plate 30 is overlapped on the support frame. The support plate 30 can be connected to the support frame by a bolt assembly.

[0035] In some embodiments, the positioning plate 70 includes a bottom plate 71, a top plate 73, and a connecting plate 72. The bottom plate 71 is connected to the support plate 30, and the top plate 73 is located above the support plate 30. The bottom plate 71 and the top plate 73 are connected to each other via the connecting plate 72, and the top plate 73 and the bottom plate 71 are located on either side of the connecting plate 72. The positioning plate 70 is connected to the support plate 30 to provide support, and the top plate 73 is used to support the first battery module 40. The connecting plate 72 provides a certain gap between the bottom of the first battery module 40 and the support plate 30 to facilitate heat dissipation from the first battery module 40.

[0036] Specifically, the positioning plate 70 is an integrally formed structure, and the cross-sectional shape of the positioning plate 70 is Z-shaped. The bottom plate 71 can be welded, bonded, or connected to the support plate 30 by bolts or screws. The bottom plate 71 and the top plate 73 are parallel to each other, and the connecting plate 72 is perpendicular to the bottom plate 71 and the top plate 73. The lower end of the first battery module 40 is in contact with the top plate 73, and the gravity of the first battery module 40 is supported by the top plate 73. Compared with the first battery module 40 being placed on the support plate 30, the contact area of ​​the bottom of the first battery module 40 can be reduced, which is beneficial to the heat dissipation of the first battery module 40. The number of positioning plates 70 is at least two, which improves the support stability of the positioning plate 70.

[0037] In some embodiments, reinforcing plates 74 are provided between the connecting plate 72 and the bottom plate 71, and between the connecting plate 72 and the top plate 73. By providing the reinforcing plates 74, the overall structural strength of the positioning plate 70 is improved, and the collapse of the top plate 73 is avoided.

[0038] Specifically, the reinforcing plate 74 connects the connecting plate 72 to the bottom plate 71 by welding, and connects the connecting plate 72 to the top plate 73. To improve the overall structural strength of the positioning plate 70, the reinforcing plate 74 can be a triangular plate.

[0039] In some embodiments, the upper end surface of the top plate 73 forms a positioning surface 75, which is parallel to the plane of the support plate 30. By making the upper end surface of the top plate 73 parallel to the plane of the support plate 30, the bottom wall of the first battery module 40 can be in contact with the top plate 73, improving the stability of the placement of the first battery module 40.

[0040] In some embodiments, the first battery module 40 and the second battery module 20 are connected in series via a cable.

[0041] In some embodiments, the support plate 30 is connected to the housing 10 by a bolt assembly. The detachable connection between the support plate 30 and the housing 10 facilitates the disassembly of the support plate 30 and the first battery module 40 as a whole.

[0042] Specifically, the support plate 30 is connected to the box body 10 through a bolt assembly as one of the structural forms. At this time, the supporting force of the support plate 30 and the gravity of the first battery module 40 is provided by the box body 10.

[0043] In some embodiments, the support plate 30 is overlapped with the upper end of the second battery module 20. The second battery module 20 provides support for the support plate 30, eliminating the need for separate installation of the support plate 30. This allows for faster disassembly of the first and second battery modules 40, 20. A positioning plate 70 is provided at the upper end of the support plate 30 to provide sufficient space between the first and second battery modules 40, 20 for heat dissipation.

[0044] Specifically, the gravity of the support plate 30 is supported by the second battery module 20. The position of the support plate 30 can also be flexible and can be adaptively adjusted according to the height of the second battery module 20. There is no need to reserve mounting holes on the box 10, which can ensure the smooth installation of the first battery module 40, the second battery module 20, and the support plate 30. During the installation process, there is no need to assemble the first battery module 40 separately, thereby improving the efficiency of assembly and disassembly. On this basis, a compression spring can also be set between the first battery module 40 and the cover plate 60. The compression spring applies downward pressure to the first battery module 40 and the second battery module 20, thereby assisting in fixing the first battery module 40 and the second battery module 20.

[0045] In some embodiments, a first fixing block 41 is provided on the outer wall of the first battery module 40. A first screw hole is provided through the first fixing block 41. A first through hole corresponding to the first screw hole is provided on the positioning plate 70. The first screw hole and the first through hole are used to pass a first bolt. The first fixing block 41, the first screw hole, and the first bolt facilitate quick removal and installation of the first battery module 40 from the support plate 30.

[0046] Specifically, after the first screw hole and the first through hole are aligned, the first bolt is passed through the first screw hole and the first through hole to connect the first battery module 40 and the positioning plate 70. When the first battery module 40 fails or needs to be repaired, the battery cells on the first battery module 40 can be repaired without removing the support plate 30. The support plate 30 can also be removed from the box body 10, and the support plate 30 and the first battery module 40 can be removed from the box body 10 as a whole, so as to facilitate the repair of the first battery module 40 as a whole.

[0047] In some embodiments, the outer wall of the second battery module 20 is provided with a second fixing block 21 having a second screw hole. The inner wall of the second chamber is provided with a second through hole corresponding to the second screw hole. The second screw hole and the second through hole are used to pass a second bolt. The second fixing block 21, the second screw hole, and the second bolt facilitate quick removal and installation of the second battery module 20 from the housing 10.

[0048] In some embodiments, the upper end of the housing 10 is open and is provided with a removable cover 60. The battery management system 50 of the first battery module 40 and the second battery module 20 is provided on the cover 60. By providing the battery management system 50 on the cover 60, when the battery management system 50 is inspected and repaired, only the battery management system 50 needs to be disassembled, and then the battery management system 50 can be debugged, maintained, or replaced.

[0049] So far, the various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0050] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A large capacity forklift battery structure, characterized in that: include: A box (10) having a cavity; a support plate (30) detachably disposed in the cavity and dividing the cavity into a first chamber and a second chamber, wherein the first chamber and the second chamber are respectively provided with a first battery module (40) and a second battery module (20); At least two positioning plates (70) are arranged on the support plate (30), and the positioning plate (70) has a positioning surface (75), and the positioning surface (75) protrudes from the plane where the support plate (30) is located. The first battery module (40) is detachably arranged on the positioning surface (75), and the gap between the first battery module (40) and the second battery module (20) is increased by the positioning plate (70).

2. The large-capacity forklift battery structure according to claim 1 is characterized in that: The positioning plate (70) comprises a bottom plate (71), a top plate (73) and a connecting plate (72); the bottom plate (71) is connected to the support plate (30); the top plate (73) is located above the support plate (30); the bottom plate (71) and the top plate (73) are connected to each other via the connecting plate (72); the top plate (73) and the bottom plate (71) are located on both sides of the connecting plate (72).

3. The large-capacity forklift battery structure according to claim 2 is characterized in that: A reinforcing plate (74) is provided between the connecting plate (72) and the bottom plate (71), and between the connecting plate (72) and the top plate (73).

4. The large-capacity forklift battery structure according to claim 2, characterized in that: The upper end surface of the top plate (73) forms the positioning surface (75), and the positioning surface (75) is parallel to the plane where the support plate (30) is located.

5. The large-capacity forklift battery structure according to claim 1, characterized in that: The first battery module (40) and the second battery module (20) are connected in series via a cable.

6. The large-capacity forklift battery structure according to claim 1, characterized in that: The support plate (30) and the box body (10) are connected via a bolt assembly.

7. The large-capacity forklift battery structure according to claim 1, characterized in that: The support plate (30) is overlapped on the upper end of the second battery module (20).

8. The large-capacity forklift battery structure according to claim 1, characterized in that: The outer wall of the first battery module (40) is provided with a first fixing block (41), and the first fixing block (41) is penetrated by a first screw hole. The positioning plate (70) is provided with a first through hole corresponding to the first screw hole, and the first screw hole and the first through hole are used for allowing a first bolt to pass through.

9. The large-capacity forklift battery structure according to claim 1, characterized in that: The outer wall of the second battery module (20) is provided with a second fixing block (21), the second fixing block (21) has a second screw hole, the inner wall of the second chamber is provided with a second through hole corresponding to the second screw hole, and the second screw hole and the second through hole are used for allowing a second bolt to pass through.

10. The large capacity forklift battery structure according to claim 1, characterized in that: The upper end of the box body (10) is an open structure. A detachable cover plate (60) is provided at the upper end of the box body (10). The battery management system (50) of the first battery module (40) and the second battery module (20) is provided on the cover plate (60).

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