Electric forklift with replaceable battery

Abstract

The utility model belongs to the technical field of electric forklifts, in particular to an electric forklift with a replaceable battery, which comprises a forklift body, a front wheel and a rear wheel which rotate forwards and backwards at the bottom of the forklift body, a cab arranged at the front end of the top of the forklift body, and a power assembly arranged at the rear end of the forklift body and used for driving the front wheel or the rear wheel to rotate. The left side wall and the right side wall, located between the front wheel and the rear wheel, of the vehicle body are each provided with a battery bin position and a bin door capable of blocking or opening a port of the battery bin position, and one or more battery replacement batteries distributed in an up-down stacked mode are longitudinally inserted into the battery bin positions. A quick-plug electric connection assembly used for electrically connecting the battery replacement battery and the power assembly is arranged in the battery compartment, and the power assembly is located above the battery compartment. According to the utility model, the battery compartment is reasonably designed, and the electric forklift cannot work continuously due to charging in a manner of laterally replacing the battery, so that the working efficiency of the electric forklift is effectively improved.

Description

Technical fields:

[0001] This utility model belongs to the field of electric forklift technology, and specifically refers to an electric forklift with replaceable batteries. Background technology:

[0002] The electric forklift disclosed in the existing Chinese utility model patent (authorization announcement number CN206116467U) includes a power battery, which is a lithium iron phosphate battery; the power battery includes a housing, lithium iron phosphate cells disposed in the housing, and an upper cover plate for sealing the opening of the housing, and the housing is provided with a lifting hole; it also includes a frame and a hood, and the power battery is disposed inside the frame and located below the hood.

[0003] This structure integrates the power battery inside the frame and stores energy through charging. However, not only does it require a long charging time per charge, affecting the use of the forklift, but the forklift also has high energy consumption and short charging intervals. Frequent charging and discharging will inevitably reduce the lifespan of the power battery, thus shortening the range and charging intervals. This makes it very inconvenient to use and requires disassembling the frame to replace the power battery, which is a troublesome operation. Summary of the Invention:

[0004] The purpose of this invention is to provide an electric forklift with a replaceable battery. Its battery compartment is reasonably designed, and the battery can be replaced from the side, so that the electric forklift will not be unable to operate continuously due to charging, thus effectively improving the operating efficiency of the electric forklift.

[0005] This utility model is implemented as follows:

[0006] A battery-replaceable electric forklift includes a body with front and rear wheels rotating at the bottom. The front end of the body is a cab, and the rear end of the body has a powertrain that drives the front or rear wheels. Battery compartments and doors that can seal or open the battery compartment ports are provided on the left and right side walls of the body between the front and rear wheels. One or more battery swapping batteries are longitudinally inserted and stacked vertically in the battery compartments. A quick-connect electrical connection assembly for electrically connecting the battery swapping batteries and the powertrain is provided in the battery compartments. The powertrain is located above the battery compartments.

[0007] In the aforementioned electric forklift with replaceable batteries, the top rear end of the vehicle body has a compartment for housing the powertrain. The powertrain includes a starter battery, a steering pump motor, a lifting pump motor, and a multi-function controller. The starter battery and steering pump motor are located directly above one of the battery compartments, while the lifting pump motor and multi-function controller are located directly above the other battery compartment.

[0008] In the aforementioned electric forklift with a replaceable battery, the powertrain also includes a radiator assembly for cooling electrical equipment, which is located in the engine compartment behind the starter battery, steering pump motor, lifting pump motor, and all-in-one controller.

[0009] In the aforementioned electric forklift with a replaceable battery, the radiator assembly is inclined upwards, and the inner top surface of the engine compartment has heat dissipation strip holes corresponding to the air blowing end position of the radiator assembly.

[0010] In the aforementioned electric forklift with a replaceable battery, an assembly window is provided on the top rear end of the vehicle body for the powertrain to enter the engine compartment. The assembly window is covered by an engine compartment cover. On the left and right sides of the engine compartment cover, there are maintenance windows that communicate with the engine compartment. The maintenance windows are covered by maintenance gull-wing doors, and the upper edge of the maintenance gull-wing doors is hinged to the corresponding maintenance windows.

[0011] In the aforementioned electric forklift with replaceable batteries, a battery tray is provided in the battery compartment. The battery tray has a battery swapping frame with a number of layers distributed vertically corresponding to the number of swappable batteries. The swappable batteries are inserted horizontally into the battery. Each swappable frame has a roller assembly on its bottom surface that can roll with the swappable battery. Each swappable frame has a guide assembly on its two side walls that guides the horizontal insertion of the swappable batteries.

[0012] In the aforementioned electric forklift with a replaceable battery, the quick-connect battery assembly includes a quick-slot opening on the inner end face of the battery and a positioning block on the battery swapping frame that can be inserted into the quick-slot opening. The battery swapping frame on both sides of the positioning block is provided with wiring posts for plugging into and electrically connecting with the battery swapping battery.

[0013] In the aforementioned electric forklift with a replaceable battery, a charging port is provided on the vehicle body. This charging port is electrically connected to the battery swapping unit through a circuit assembly, allowing an external power source to charge the battery swapping unit inside the vehicle body via the charging port.

[0014] The outstanding advantages of this utility model compared to the prior art are:

[0015] This utility model features a rationally designed battery compartment. By using a side-mounted battery swapping method, a fully charged battery can be swapped with an existing battery simply by opening the compartment door. The swapped-out battery is then charged in equipment outside the vehicle, ensuring continuous operation of the electric forklift. This effectively solves the problems of time-consuming charging and inability to operate continuously caused by charging, thus significantly improving the operating efficiency of the electric forklift. Attached image description:

[0016] Figure 1 This is a three-dimensional view of the complete vehicle according to this utility model;

[0017] Figure 2 This is a cross-sectional view of the entire vehicle according to this utility model. Figure 1 ;

[0018] Figure 3 This is a cross-sectional view of the entire vehicle according to this utility model. Figure 2 ;

[0019] Figure 4 This is a diagram showing the battery holder and the battery swapping device of this utility model.

[0020] In the diagram: 1. Vehicle body; 2. Front wheel; 3. Rear wheel; 4. Cab; 5. Battery compartment; 6. Compartment door; 7. Battery swapping unit; 8. Quick-connect battery assembly; 9. Engine compartment; 10. Radiator assembly; 11. Radiator grille; 12. Engine cover; 13. Gullwing door for maintenance; 14. Battery bracket; 15. Battery swapping frame. Detailed implementation method:

[0021] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —4:

[0022] A battery-replaceable electric forklift includes a body 1, with front wheels 2 and rear wheels 3 rotating at the bottom of the body 1. The front end of the top of the body 1 is a cab 4, and the rear end of the body 1 has a powertrain that drives the front wheels 2 or the rear wheels 3 to rotate. Battery compartments 5 and doors 6 that can seal or open the ports of the battery compartments 5 are provided on the left and right side walls of the body 1 between the front wheels 2 and the rear wheels 3. One or more battery swapping batteries 7 are longitudinally inserted into the battery compartments 5 and stacked vertically. A quick-connect electrical connection assembly 8 for electrically connecting the battery swapping batteries 7 and the powertrain is provided in the battery compartments 5. The powertrain is located above the battery compartments 5.

[0023] This utility model rationally designs the battery compartment 5, allowing for the replacement of the battery 7 from the side. Simply open the compartment door 6 to replace the fully charged battery 7 with the battery 7 inside the vehicle body 1. The replaced battery 7 will then be charged in equipment outside the vehicle body 1, thereby ensuring that the electric forklift can operate continuously. This effectively solves the problems of time-consuming charging and inability to operate continuously caused by charging, and effectively improves the operating efficiency of the electric forklift.

[0024] The battery compartment 5 and the powertrain are further optimized in terms of their positional distribution. The top rear end of the vehicle body 1 has an engine compartment 9 for placing the powertrain. The powertrain includes a starter battery, a steering pump motor, a lift pump motor and an all-in-one controller. The starter battery and steering pump motor are located directly above one of the battery compartments 5, and the lift pump motor and all-in-one controller are located directly above the other battery compartment 5.

[0025] Furthermore, in order to effectively cool the heat generated by electrical equipment such as the starter battery, drive motor, steering pump motor, and lift pump motor, the powertrain also includes a radiator assembly 10 for cooling the electrical equipment. The radiator assembly 10 is located in the engine compartment 9 behind the starter battery, steering pump motor, lift pump motor, and multi-function controller. Moreover, the radiator assembly 10 is inclined upwards, and the inner top surface of the engine compartment 9 has heat dissipation vents 11 corresponding to the air blowing end position of the radiator assembly 10.

[0026] Meanwhile, in order to facilitate the placement of electrical equipment into the engine compartment 9 and the maintenance of the electrical equipment in the engine compartment 9, an assembly window for the powertrain to enter the engine compartment 9 is provided on the top rear end of the vehicle body 1. An engine compartment cover 12 is installed on the assembly window. Maintenance windows communicating with the engine compartment 9 are provided on the vehicle body 1 on the left and right sides of the engine compartment cover 12. Maintenance gull-wing doors 13 are installed on the maintenance windows. The upper edge of the maintenance gull-wing doors 13 is hinged to the corresponding maintenance window.

[0027] To ensure the battery swapping unit 7 can be stably inserted into the battery compartment 5, a battery bracket 14 is provided within the battery compartment 5. The battery bracket 14 has battery swapping frames 15 arranged vertically in layers corresponding to the number of battery swapping units 7. Each battery swapping frame 15 allows the battery swapping unit 7 to be inserted horizontally inwards. Each battery swapping frame 15 has a roller assembly on its bottom surface that can roll with the battery swapping unit 7. Each battery swapping frame 15 also has guide components on its two side walls to guide the horizontal insertion of the battery swapping unit 7. The roller assembly can be several rollers rotatably fitted on the battery bracket 14; and the guide components can be guide rails on the corresponding side walls of the battery swapping frame 15 and guide wheels rotatably fitted on the guide rails.

[0028] Furthermore, the quick-connect electrical connection assembly 8 includes a quick-connect slot provided on the inner end face of the battery swapping battery 7, and a positioning block provided on the battery swapping frame 15 that can be inserted into the quick-connect slot. The battery swapping frame 15 located on both sides of the positioning block is provided with line plugs for plugging into and electrically connecting with the battery swapping battery 7.

[0029] In addition, considering that the electric vehicle inside the vehicle body 1 can be charged in case there are no other replaceable battery 7, the vehicle body 1 is provided with a charging port. The charging port is electrically connected to the battery 7 through the circuit assembly, and the battery 7 inside the vehicle body 1 is charged by an external power source through the charging port.

[0030] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. An electric forklift with replaceable batteries, comprising a body (1), a front wheel (2) and a rear wheel (3) rotating at the bottom of the body (1), a cab (4) at the top front end of the body (1), and a power assembly at the rear end of the body (1) for driving the front wheel (2) or the rear wheel (3) to rotate, characterized in that: Battery compartments (5) and doors (6) that can block or open the ports of the battery compartments (5) are provided on the left and right side walls of the vehicle body (1) located between the front wheel (2) and the rear wheel (3). One or more battery swapping batteries (7) are inserted longitudinally and stacked vertically in the battery compartments (5). A quick-connect electrical connection assembly (8) for electrically connecting the battery swapping batteries (7) and the powertrain is provided in the battery compartments (5). The powertrain is located above the battery compartments (5).

2. The electric forklift with a replaceable battery according to claim 1, characterized in that: The top rear end of the vehicle body (1) has a cabin chamber (9) for the powertrain to be placed. The powertrain includes a starter battery, a steering pump motor, a lift pump motor and an all-in-one controller. The starter battery and steering pump motor are located directly above one of the battery compartments (5), and the lift pump motor and all-in-one controller are located directly above the other battery compartment (5).

3. The electric forklift with a replaceable battery according to claim 2, characterized in that: The powertrain also includes a radiator assembly (10) for cooling electrical equipment, which is located in the cabin chamber (9) behind the starter battery, steering pump motor, lift pump motor and all-in-one controller.

4. The electric forklift with a replaceable battery according to claim 3, characterized in that: The radiator assembly (10) is inclined upward, and the inner top surface of the engine compartment (9) is provided with heat dissipation strip holes (11) corresponding to the air blowing end position of the radiator assembly (10).

5. The electric forklift with a replaceable battery according to claim 2, characterized in that: The rear top surface of the vehicle body (1) is provided with an assembly window for the powertrain to enter the engine compartment (9). The assembly window is covered with an engine compartment cover (12). The vehicle body (1) located on the left and right sides of the engine compartment cover (12) is provided with maintenance windows that communicate with the engine compartment (9). The maintenance windows are covered with maintenance gull wing doors (13). The upper edge of the maintenance gull wing door (13) is hinged to the corresponding maintenance window.

6. The electric forklift with a replaceable battery according to claim 1, characterized in that: The battery compartment (5) is provided with a battery bracket (14). The battery bracket (14) has a battery swapping frame (15) with a number of layers corresponding to the number of swapping batteries (7) distributed vertically. The swapping frame (15) allows the swapping batteries (7) to be inserted horizontally inward. Each swapping frame (15) has a roller assembly that can roll with the swapping battery (7) on its bottom surface. Each swapping frame (15) has a guide assembly on both sides to guide the swapping battery (7) to be inserted horizontally.

7. The electric forklift with a replaceable battery according to claim 6, characterized in that: The quick-connect electrical connection assembly (8) includes a quick-connect slot provided on the inner end face of the battery (7) and a positioning block provided on the battery swapping frame (15) that can be inserted into the quick-connect slot. The battery swapping frame (15) located on both sides of the positioning block is provided with line plugs for plugging into and electrically connecting with the battery swapping battery (7).

8. The electric forklift with a replaceable battery according to claim 1, characterized in that: The vehicle body (1) is provided with a charging port, which is electrically connected to the battery swapping unit (7) through the circuit assembly. An external power source charges the battery swapping unit (7) inside the vehicle body (1) through the charging port.

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