Battery pack and electric forklift comprising same

Abstract

The utility model discloses a battery pack and an electric forklift comprising the same, and relates to the technical field of electric forklifts. The battery pack comprises a tube body, a storage battery and a locking mechanism. The tube body comprises a battery chamber and a battery cover covering the battery chamber; the storage battery is detachably installed in the battery cavity, and a first base and a second base which can be electrically connected with the storage battery are further arranged in the battery cavity. The locking mechanism is located on the pipe body and comprises a first locking mechanism body and a second locking mechanism body connected with the first base, the second locking mechanism body is provided with a stirring part and a clamping part which are connected with each other, and the stirring part can drive the clamping part to stretch out of or retract into the first base in the first direction. By adopting the technology provided by the utility model, the mounting and dismounting processes of the storage battery can be simplified while the protection effect of the storage battery is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electric forklift technology, specifically to a battery pack and an electric forklift containing the same. Background Technology

[0002] With increasing environmental awareness and adjustments to the energy structure, pedestrian-operated electric forklifts are widely used in warehousing and logistics due to their advantages such as low noise and low emissions. Among them, [the following text appears to be incomplete and requires further context: "attached"] Figure 1 This can represent the mainstream structural design of current stepping electric forklifts, combined with... Figure 1 It can be seen that the following problems exist: (1) The power unit is bulky, making the electric forklift relatively cumbersome to use; (2) The battery is non-removable. Once the battery is dead, the electric forklift will not be usable. In order to extend the electric forklift's range, increasing the battery capacity will further exacerbate the problem of bulky size.

[0003] Based on this, Chinese invention patent document (CN113120809B) discloses a battery locking mechanism and a forklift, which achieves the purpose of quick installation and quick removal of the battery through the linkage between the trigger and the first locking member, and limits the horizontal movement of the battery in the cavity by the limiting part to prevent the battery from swaying left and right during the forklift's operation. However, in conjunction with the appendix of this invention patent... Figure 3 It can be seen that its essence is to omit the lifting mechanism of the electric forklift. In other words, although it can remove and fix the battery, its fixing method and battery structure still cannot solve the problem of the bulky size of the power unit, and its disassembly and installation parts still have room for improvement. Utility Model Content

[0004] This invention provides a battery pack and an electric forklift to solve the problem of bulky power units in existing electric forklifts.

[0005] To solve the above-mentioned technical problems, the present invention provides a battery pack, which includes a tube, a battery, and a locking mechanism.

[0006] The tube includes a battery chamber and a battery cover covering the battery chamber; the battery is detachably installed in the battery chamber, wherein the battery chamber is also provided with a first base and a second base that can be electrically connected to the battery.

[0007] The locking mechanism is located in the tube body and includes a first locking mechanism and a second locking mechanism connected to the first base. The second locking mechanism is provided with a toggle part and a latching part connected to each other. The toggle part can drive the latching part to extend or retract into the first base in a first direction.

[0008] The beneficial effects of the technical solution provided by this utility model compared to the prior art are as follows:

[0009] By incorporating a removable battery, electric forklifts can easily remove, replace, charge, and maintain the battery, effectively improving their efficiency. The battery pack replaces the traditional battery box structure with a tubular body and battery cover, and a stable power supply is achieved through electrical connections between the first and second bases and the battery. This design ensures that the tubular body protects and stabilizes the battery when it is installed within the battery chamber, and the placement of the battery within the chamber simplifies installation and removal while maintaining its protective function.

[0010] In addition, the battery pack is equipped with a locking mechanism. The first and second locking mechanisms form a dual locking system for the battery pack, improving battery safety. Specifically, the first locking mechanism can be used for anti-theft protection of the battery, while the second locking mechanism can be used to limit the battery's position. For example, when the first locking mechanism is in the open position, the latching part of the second locking mechanism extends to lock the battery, reducing the safety hazards that may result from the battery falling out. Furthermore, the battery can only be removed by manual operation of the latching part by a staff member, further ensuring battery safety.

[0011] In some embodiments, the latching portion includes an elastic member and a latching block that engages with the actuating portion, wherein the elastic member presses against the latching block on the side away from the battery along the first direction.

[0012] By adopting the above technical solution, the preload of the elastic element can ensure the automatic ejection of the locking block, so that the locking block can extend out of the first base and cooperate with the corresponding groove of the battery, thereby achieving locking protection of the battery.

[0013] In some embodiments, the actuating part includes an actuating block and a rotating shaft passing through the actuating block, wherein at least a portion of the actuating block protrudes from the surface of the tube body.

[0014] By adopting the above technical solution, the rotating shaft can reduce the operating friction of the operator when operating the actuating block, and ensure that the automatic rebound of the elastic element can drive the actuating block to automatically return to its original position. The design of the actuating block protruding from the tube surface makes it easier for the operator to operate the actuating block.

[0015] In some implementations, the battery is provided with a handle at one end along the first direction. When the battery needs to be removed for maintenance or external charging, the handle provides a gripping point, reducing the difficulty of operation for workers and avoiding the risk of the battery slipping during handling.

[0016] In some embodiments, the tube body is further provided with a charging port communicating with the second base, so that the battery can be placed in the battery chamber for charging.

[0017] In some implementations, the battery is also provided with symmetrical notches on both ends along the second direction to provide a point of leverage for workers to remove the battery and avoid situations where the battery is too heavy or jammed, making it difficult to remove.

[0018] In some implementations, the battery is a lithium-ion battery; and / or the battery can be detachably installed on the electric bicycle.

[0019] By adopting the above technical solution, the high energy density of lithium-ion batteries can reduce the overall weight of the battery pack and alleviate the charging requirements of electric forklifts. Furthermore, the batteries are cross-platform compatible with electric bicycles, improving battery utilization and reducing the maintenance costs of multiple devices.

[0020] In some implementations, the first locking mechanism is located on one side of the tube along the second direction to improve space utilization of the battery pack. The first locking mechanism can be one or more of a mechanical lock, a combination lock, or an NFC lock.

[0021] In some implementations, this application also provides an electric forklift, including a control handle, a drive motor, and forks.

[0022] The control handle is embedded with the aforementioned battery pack; the drive motor is connected to the control handle and electrically connected to the battery pack, such that the battery pack's battery serves as the power source for the drive motor; the forks are connected to the drive motor.

[0023] When the above-mentioned battery pack is used in an electric forklift, the battery pack structure can be integrated with the control system. That is, the tube body serves as the main structure of the control handle, enabling the drive motor to supply power, which facilitates the drive motor to operate the forks. At the same time, it also shortens the power supply path of the drive motor and reduces energy consumption.

[0024] In some implementations, the electric forklift further includes a lifting assembly connected to the forks and the drive motor to perform lifting operations on the forks.

[0025] In some implementations, the end of the control handle away from the forks is further provided with a control panel and a handle, with the handle located on both sides of the control panel.

[0026] The above technical solution features a dual-side handle design to improve the stability and comfort of the operator's grip. The control panel is electrically connected to the battery pack and is equipped with multiple operation buttons to enable lifting, moving, and other operations on the forks. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0028] Figure 1 It is an electric forklift in the existing technology;

[0029] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of a battery pack provided by this utility model;

[0030] Figure 3 This is a three-dimensional structural schematic diagram of an embodiment of a battery pack provided by this utility model;

[0031] Figure 4 This is a partial three-dimensional structural diagram of an embodiment of an electric forklift provided by this utility model. Figure 1 ;

[0032] Figure 5 This is a three-dimensional structural schematic diagram of an embodiment of the first base of a battery pack provided by this utility model;

[0033] Figure 6 This is a partial cross-sectional view of an embodiment of a battery pack provided by this utility model;

[0034] Figure 7 This is a rear view of an embodiment of the first base of a battery pack provided by this utility model;

[0035] Figure 8 This is a partial structural schematic diagram of an embodiment of a battery pack provided by this utility model;

[0036] Figure 9 This is a partial three-dimensional structural diagram of an embodiment of an electric forklift provided by this utility model. Figure 2 .

[0037] In the picture:

[0038] 10. Tube body; 11. Battery chamber; 12. Battery cover; 13. First base; 14. Second base; 15. Charging port; 20. Battery; 21. Notch;

[0039] 30. Locking mechanism; 31. First locking mechanism; 32. Second locking mechanism; 320. Actuating part; 3200. Actuating block; 3201. Rotating shaft; 321. Snap-fit ​​part; 3210. Elastic element; 3211. Snap-fit ​​block; 40. Control handle; 41. Control panel; 42. Handle; 50. Drive motor. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0041] For ease of subsequent description, this application will first combine [the following descriptions] before describing the specific structure of the battery pack and the electric forklift. Figure 3 A first direction (X), a second direction (Y), and a third direction (Z) are defined. The first direction is the length direction of the battery pack, such as the X direction; the second direction is the width direction of the battery pack, such as the Y direction; and the third direction is the height direction of the battery pack, such as the Z direction. In this application, the first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

[0042] It is understood that the mutual perpendicularity in this application is not absolute perpendicularity. Approximate perpendicularity due to processing errors and assembly errors (e.g., the included angle between two structural features is 89.9°) is also within the scope of mutual perpendicularity in this application.

[0043] See Figures 2 to 4 As shown, Figure 2 This paper shows a cross-sectional structural schematic diagram of an embodiment of a battery pack provided in this application; Figure 3 This application provides a three-dimensional structural schematic diagram of an embodiment of a battery pack. Figure 4 This application provides a partial perspective view of an embodiment of an electric forklift. Figure 1 .

[0044] In some embodiments, the battery pack includes: a tube body 10, a battery 20, and a locking mechanism 30. The tube body 10 includes a battery chamber 11 and a battery cover 12 covering the battery chamber 11; the battery 20 is detachably installed in the battery chamber 11, wherein the battery chamber 11 is also provided with a first base 13 and a second base 14 that can be electrically connected to the battery 20.

[0045] The locking mechanism 30 is located in the tube body 10 and includes a first locking mechanism 31 and a second locking mechanism 32 connected to the first base 13. The second locking mechanism 32 is provided with a toggle part 320 and a latching part 321 connected to each other. The toggle part 320 can drive the latching part 321 to extend or retract into the first base 13 in a first direction.

[0046] In this embodiment of the application, combined with Figure 2 and Figure 3 As shown, by providing a removable battery 20, the electric forklift can easily remove, replace, charge, and maintain the battery. For example, the battery 20 can be continuously charged and replaced with a fully charged one to extend the electric forklift's operating time.

[0047] Among them, combined Figure 3 The battery pack replaces the current battery box structure with a tube body 10 and a battery cover 12. The first base 13 and the second base 14 are electrically connected to the battery 20 to achieve a stable power supply. This ensures that when the battery 20 is installed in the battery chamber 11, the tube body 10 can protect and stabilize the battery 20. The design of the battery 20 being installed in the battery chamber 11 simplifies the installation and removal process of the battery 20 while ensuring the protective effect of the battery 20.

[0048] In addition, the battery pack is equipped with a locking mechanism 30. The first locking mechanism 31 and the second locking mechanism 32 serve as a dual locking mechanism for the battery pack, improving the safety of the battery 20. Specifically, in combination with Figure 3 As shown, the first locking mechanism 31 can be used to provide anti-theft protection (Level 1 protection) for the battery 20. In some applications, the first locking mechanism 31 is located on one side of the tube 10 along the second direction to improve the space utilization of the battery pack. Figure 3 The first locking mechanism 31 shown is a mechanical lock, whose main function is anti-theft. However, this application does not limit the first locking mechanism 31, which may also be one or more of a combination lock, NFC lock, and Bluetooth lock.

[0049] The second locking mechanism 32 is mainly used to limit the battery 20 (secondary protection). When the first locking mechanism 31 is in the open state, the latching part 321 of the second locking mechanism 32 extends and can latch the battery 20, reducing the safety accidents that may be caused by the battery 20 falling off. The battery 20 can only be removed by the operator manually operating the lever part 320, further ensuring the safety of the battery 20.

[0050] Combination Figure 4 As shown, in some application scenarios, when the above-mentioned battery pack structure is installed in an electric forklift, the tube 10 can serve as the main structure of the control handle 40, making it more efficient than... Figure 1The existing structure shown, by removing the "large part" of the power unit, only partially thickens the middle part of the control handle 40, which greatly improves the ease of use of the electric forklift.

[0051] See Figures 5 to 7 As shown, Figure 5 This invention provides a three-dimensional structural schematic diagram of an embodiment of a first base 13 of a battery pack. Figure 6 A partial cross-sectional view of an embodiment of a battery pack provided in this application is shown; Figure 7 A rear view of an embodiment of a first base 13 of a battery pack provided in this application is shown; wherein, Figure 6 The shaded area represents the second locking mechanism 32.

[0052] In some implementation schemes, combined Figure 5 and Figure 6 As shown, the latching part 321 includes an elastic member 3210 and a latching block 3211 that engages with the toggle part 320. The elastic member 3210 presses against the latching block 3211 on the side away from the battery 20 in the first direction.

[0053] In this embodiment, the preload of the elastic element 3210 ensures the automatic ejection of the locking block 3211, allowing it to extend out of the first base 13 and engage with the corresponding groove of the battery 20, thereby achieving locking protection for the battery 20. Exemplarily, the head of the locking block 3211 has an inclined surface, which allows the battery 20 to be placed in the battery chamber 11, and the pressure of the battery 20 to push the locking block 3211 into the first base 13, compressing the elastic element 3210. The elastic element 3210 can be a spring.

[0054] In some embodiments, the actuating part 320 includes an actuating block 3200 and a rotating shaft 3201 passing through the actuating block 3200, wherein at least a portion of the actuating block 3200 protrudes from the surface of the tube body 10.

[0055] In this embodiment, the rotating shaft 3201 reduces the operating friction of the operator operating the actuating block 3200, ensuring that the automatic rebound of the elastic element 3210 can drive the actuating block 3200 to automatically return to its original position. The actuating block 3200 protruding from the surface of the tube body 10 facilitates operation by the operator. Combined with... Figure 5 and Figure 7 As shown, the actuating block 3200 is provided with a movable slot and protrudes from the upper surface of the tube body 10.

[0056] In some applications, the actuating block 3200 can also be configured as multiple locking blocks to reduce the assembly difficulty of the first base 13, combined with Figure 7As shown, the part of the actuating block 3200 exposed in the tube body 10 is also provided with concave and convex prisms to improve the actuating friction of the operator.

[0057] In some embodiments, a handle (not shown) is provided at one end of the battery 20 along a first direction. When the battery 20 needs to be removed for maintenance or external charging, the handle provides a gripping point, reducing the difficulty of operation for workers and avoiding the risk of the battery 20 slipping during transport. Exemplarily, the handle in this application is foldable to reduce the space occupied by the battery chamber 11.

[0058] See Figure 8 As shown, Figure 8 A partial structural schematic diagram of an embodiment of a battery pack provided in this application is shown.

[0059] In some implementations, the tube body 10 is also provided with a charging port 15 that communicates with the second base 14, so that the battery 20 can be placed in the battery chamber 11 for charging. For example, when the electric forklift is idle, a USB charging cable or the like can be directly connected to the charging port 15 for charging, reducing the handling and replacement of the battery 20.

[0060] In some implementation schemes, such as Figure 8 As shown, the battery 20 is also symmetrically provided with notches 21 on both ends along the second direction, so as to provide a force point for the staff to remove the battery 20 and avoid situations where the battery 20 is too heavy or stuck and difficult to remove.

[0061] In some implementations, the battery 20 is a lithium-ion battery, whose high energy density, compared to lead-acid batteries, can reduce the overall weight of the battery pack and reduce the charging requirements of the electric forklift.

[0062] In some implementations, the battery 20 can be detachably installed on the electric bicycle. In some electric forklift applications, there are often multiple different devices with varying power requirements. Therefore, the battery 20 can be cross-platform compatible with electric bicycles to improve the utilization rate of the battery 20 and reduce the maintenance costs of multiple devices.

[0063] See Figure 9 As shown, Figure 9 This application provides a partial perspective view of an embodiment of an electric forklift. Figure 2 .

[0064] On the other hand, this application also provides an electric forklift, including a control handle 40, a drive motor 50, and forks. The control handle 40 is embedded with the aforementioned battery pack; the drive motor 50 is connected to the control handle 40 and electrically connected to the battery pack, such that the battery 20 of the battery pack serves as the power source for the drive motor 50, and the forks are connected to the drive motor 50.

[0065] In this embodiment of the application, when the above-mentioned battery pack is used in an electric forklift, the battery pack structure can be integrated with the control system. That is, the tube 10 serves as the main structure of the control handle 40, enabling the drive motor 50 to supply power, facilitating the drive motor 50 to drive the forks to operate, while also shortening the power supply path of the drive motor 50 and reducing energy consumption.

[0066] In some implementations, the electric forklift also includes a lifting assembly connected to the forks and drive motor 50 to enable lifting operations on the forks.

[0067] In some implementations, the end of the control handle 40 away from the forks is also provided with a control panel and a handle 42, with the handle 42 located on both sides of the control panel.

[0068] In this embodiment, the dual handles 42 are designed to improve the stability and comfort of the operator's grip. The control panel is electrically connected to the battery pack and is equipped with multiple operation buttons to realize the lifting and lowering operation, movement operation, etc. of the forks.

[0069] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, should be included within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, include: The tube body includes a battery chamber and a battery cover covering the battery chamber; A storage battery, wherein the storage battery is detachably installed in the battery chamber, and the battery chamber is further provided with a first base and a second base that can be electrically connected to the storage battery; A locking mechanism is located in the tube body and includes a first locking mechanism and a second locking mechanism connected to the first base. The second locking mechanism is provided with a toggle part and a latching part connected to each other. The toggle part can drive the latching part to extend or retract into the first base in a first direction.

2. The battery pack according to claim 1, characterized in that, The latching portion includes an elastic member and a latching block that engages with the actuating portion, wherein the elastic member presses against the latching block on the side away from the battery along the first direction.

3. The battery pack according to claim 2, characterized in that, The actuating part includes an actuating block and a rotating shaft passing through the actuating block, wherein at least a portion of the actuating block protrudes from the surface of the tube body.

4. The battery pack according to claim 1, characterized in that, The battery is provided with a handle at one end along the first direction.

5. The battery pack according to claim 1, characterized in that, The tube body is also provided with a charging port that communicates with the second base.

6. The battery pack according to any one of claims 1 to 5, characterized in that, The battery is a lithium-ion battery; and / or The battery can be detachably installed on the electric bicycle.

7. The battery pack according to any one of claims 1 to 5, characterized in that, The first locking mechanism is located on one side of the tube body along the second direction, wherein the first locking mechanism is one or more of a mechanical lock, a combination lock, and an NFC lock.

8. An electric forklift, characterized in that, include: A control handle, wherein the control handle is embedded with a battery pack according to any one of claims 1 to 7; A drive motor is connected to the control handle and electrically connected to the battery pack, such that the battery in the battery pack serves as the power source for the drive motor. Forks, which are connected to the drive motor.

9. The electric forklift according to claim 8, characterized in that, The electric forklift also includes a lifting assembly, which is connected to the forks and the drive motor respectively.

10. The electric forklift according to claim 8, characterized in that, The control handle is further provided with a control panel and a handle at the end away from the forks, with the handle located on both sides of the control panel.

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