Water-cooled high-voltage lithium battery balancing forklift battery replacement system

Abstract

The utility model discloses a kind of water-cooled high-pressure lithium battery balance fork truck battery swapping systems, belong to new energy technical field, comprising: battery swapping station, storage type charging part for centralized storage and charging battery assembly are equipped in battery swapping station;Battery assembly, battery assembly includes shell, battery pack set in shell and control module installed on the upper end of battery pack, battery pack includes battery module and waterway module for the heat dissipation of battery module, control module side is electrically connected with battery swapping plug-in;Battery swapping system is transferred and replaced between battery swapping station and electric fork truck by transport tool with battery assembly.The utility model has the advantages that: with lower cost, the battery swapping function of water-cooled high-pressure lithium battery balance fork truck is realized.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, specifically to a water-cooled high-voltage lithium battery counterbalance forklift battery swapping system. Background Technology

[0002] Forklifts are engineering vehicles that require continuous operation. In the new energy industry, battery capacity has become the main factor limiting the continuous operation of electric forklifts.

[0003] To meet the needs of electric forklifts for rapid battery replacement and continuous operation, the battery swapping industry has developed rapidly due to a combination of factors, including government policy support, growing market demand, technological advancements, and innovative business models.

[0004] Currently, the rapid battery swapping technology for electric forklifts is in its early stages of development. The difficulty for small and medium-sized enterprises in transitioning from fuel-powered forklifts to electric forklifts lies in the high cost of battery swapping systems. In particular, there are no suitable battery swapping technologies for high-voltage lithium-ion forklifts used in heavy-duty outdoor and complex working conditions. Utility Model Content

[0005] The present invention aims to solve the technical problems mentioned in the background section above by providing a water-cooled high-voltage lithium battery swapping system for counterbalanced forklifts. This system, which combines manual labor with transportation tools, enables battery swapping at a lower cost, thereby meeting the needs of continuous operation.

[0006] According to the above-mentioned objectives of this utility model, the technical solution provided by this utility model is: a water-cooled high-voltage lithium battery counterbalance forklift battery swapping system, comprising: Battery swapping stations are equipped with storage-type charging units for centralized storage and charging of battery components. The battery assembly includes a housing, a battery pack disposed within the housing, and a control module mounted on the top of the battery pack. The battery pack includes battery modules and a water cooling module for heat dissipation of the battery modules. A battery swapping plug is electrically connected to one side of the control module. The battery swapping system uses transportation vehicles to transfer and replace battery components between the battery swapping station and electric forklifts.

[0007] In some embodiments, the battery swapping station further includes at least one battery swapping operation unit disposed on the side of the storage charging unit, the battery swapping operation unit having a battery swapping entrance / exit for power supply forklifts to enter and exit.

[0008] In some embodiments, the battery swapping station also includes a maintenance department isolated from the storage charging unit, the maintenance department having a maintenance entrance / exit.

[0009] In some embodiments, the battery compartment floor of the electric forklift has a side-support structure with a central open section to allow transport vehicles to enter and lift the battery assembly.

[0010] In some embodiments, the battery compartment bottom plate is provided with multiple through holes, and the battery assembly housing is fixedly connected to the battery compartment bottom plate by bolts passing through the through holes; the battery compartment side door of the electric forklift is hinged to the battery compartment.

[0011] In some embodiments, the battery swapping plug includes a battery swapping socket disposed on the battery assembly and a battery swapping plug disposed on the electric forklift, the battery swapping socket being electrically connected to the control module.

[0012] In some embodiments, the battery swapping plug-in is a single-core power battery swapping plug-in or a power and signal line combined battery swapping plug-in.

[0013] In some embodiments, the water circuit module includes a water-cooled housing or a water-cooled plate and water circuit pipes, with the water-cooled housing or water-cooled plate laid at the bottom of the battery module.

[0014] In some embodiments, the transport vehicle is another forklift or a lifting AGV.

[0015] In some embodiments, a cloud management platform is also included, which uploads battery usage records, usage counts, and fault information to the cloud management platform by scanning the coding of the battery components.

[0016] The advantages of this utility model compared with the prior art are as follows: 1. The multi-layer stacked storage-type battery swapping station occupies a small area and can be easily modified from existing factory buildings, meeting the needs of small and medium-sized enterprises for low-cost battery swapping; 2. Forklift battery swapping and lifting AGV battery swapping are two battery swapping methods that can meet the needs of customers of different sizes; 3. It solves the problem of errors caused by manual recording of battery swapping, and adopts scanning code to upload to the cloud platform to record the battery code, record the number of times the battery is used, and upload the battery usage record and faults to the cloud platform in real time.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a battery swapping station in an embodiment of the present invention. Figure 2 This is a schematic diagram of the battery assembly of the battery swapping system according to an embodiment of this utility model; Figure 3 yes Figure 2 The diagram shows the internal structure of the battery assembly. Figure 4 yes Figure 2 A schematic diagram of the battery swapping plug for the battery assembly shown; Figure 5 yes Figure 2A schematic diagram of another battery swapping plug for the battery assembly shown; Figure 6 This is a schematic diagram of a battery swapping process using a forklift, according to an embodiment of this utility model. Figure 7 This is a schematic diagram of a battery swapping process using a lifting AGV, as described in this embodiment of the invention. Figure 8 This is a schematic diagram of a battery-swapping forklift according to an embodiment of the present utility model; Figure 9 This is a top view of the battery compartment floor of the electric forklift according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the battery swapping process according to an embodiment of the present invention; In the picture: 1. Battery swapping station; 2. Battery module; 3. Battery swapping connector; 4. Forklift; 5. Lifting AGV; 6. Battery compartment side door; 7. Battery compartment floor; 11. Storage-type charging station; 12. Battery swapping entrance / exit; 13. Battery swapping operation station; 14. Maintenance station; 15. Maintenance entrance / exit; 21. Water circuit module; 22. Copper busbar wiring harness; 23. Battery module; 24. Control module; 25. National standard charging port; 31. Power swap socket; 32. Power swap plug. Detailed Implementation

[0019] The present invention will now be described in further detail.

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] like Figure 1 , Figure 2 As shown in the figure, this embodiment provides a water-cooled high-voltage lithium battery counterbalance forklift battery swapping system, including... Figure 1 The battery swapping station 1 and shown Figure 2 The battery pack 2 shown with the battery swapping plug 3 needs to be swapped in conjunction with a transport vehicle. The transport vehicle can be another forklift or a lifting AGV5 to transport the battery pack 2.

[0022] like Figure 1 As shown, the battery swapping station 1 includes a storage-type charging unit 11, a battery swapping operation unit 13, and an after-sales maintenance unit 14. The battery swapping station 1 has the functions of battery swapping, charging, dispatching, and after-sales maintenance.

[0023] The storage-type charging unit 11 is a place where battery components 2 are centrally stored and charged; there are four battery swapping operation units 13 on each side of the storage-type charging unit 11, where electric forklifts perform battery swapping operations; a battery swapping entrance / exit 12 is provided on one side of the battery swapping operation unit 13 for electric forklifts to enter and exit the battery swapping station 1.

[0024] The maintenance department 14 is located on the other side of the battery swapping station 1, separated from the storage charging department 11. Forklifts and battery components 2 are both maintained and repaired in the maintenance department 14. A maintenance entrance 15 is provided on one side of the maintenance department 14 for entering and exiting the battery swapping station 1.

[0025] In this embodiment, the battery swapping station 1 adopts a mode of centralized battery storage, fixed-point battery swapping, and multi-point coordination.

[0026] Designated battery swapping refers to providing battery replacement, charging, and forklift maintenance services only at battery swapping station 1, avoiding the risks associated with swapping batteries at random locations. Furthermore, multiple battery swapping stations 1 can cooperate with each other, and batteries from multiple nearby battery swapping stations 1 can be allocated to each other, reducing the need for a single battery swapping station 1 to store a large number of batteries and reducing battery asset investment.

[0027] The battery swapping mode can be selected based on the existing number of stations and battery swapping forklifts. Forklift battery swapping is suitable for situations with a small number of battery swapping forklifts, while lifting AGV5 battery swapping is suitable for situations with a large number of battery swapping forklifts. This battery swapping mode requires basic manual operation, which can reduce the investment in automated equipment. The investment in battery swapping equipment is also lower, and manual intervention can handle various emergencies, reducing accidents.

[0028] Combination Figure 2 , Figure 3 As shown, a battery swapping plug 3 is installed on one side of the control module 24 at the upper end of the battery assembly 2.

[0029] Figure 3 As shown, the battery assembly 2 includes a housing and a battery pack inside the housing. The battery pack also includes a control module 24, a battery module 23, a water circuit module 21, a wire harness copper busbar 22, etc.

[0030] The battery pack is arranged in a single layer and uses a water-cooled plate or water-cooled housing for battery heat dissipation. The traditional forklift battery slot is eliminated at the bottom of the battery pack, and the forklift bottom is replaced with an open frame for easy forklift loading and lifting. The control module 24 monitors and saves data, controls battery charging and discharging, and the on / off state of auxiliary functions. The battery module 23 is a power storage tank, capable of both discharging and charging. Wiring harnesses and copper busbars connect the various modules and collect data such as individual cell voltage and temperature. The water circuit module 21 consists of a water-cooled housing or water-cooled plate and water circuit fittings, with the water-cooled housing or water-cooled plate placed at the bottom of the module.

[0031] The control module 24 is installed at the top of the battery pack, and one side of the control module 24 is also electrically connected to the battery swapping plug 3.

[0032] like Figure 4 The image shows a single-core power swapping plug-in 3, as shown. Figure 5 The image shows a 2+8 power and signal line combination battery swapping plug-in 3; all are commercially available models, requiring no mold making, thus reducing R&D costs; the high-voltage single-core power plug-in uses machined terminals, and the 2+8 power and signal line combination plug-in can output two power lines and eight signal lines to meet the auxiliary power and communication requirements of the whole machine. The battery swapping plug-in 3 can be recycled at least 3000 times and has passed various tests.

[0033] The battery swapping socket 31 is electrically connected to the control module 24 of the battery pack 2. The battery swapping plug 32 is installed on the electric forklift. When swapping batteries, the battery swapping socket 31 and the battery swapping plug 32 need to be connected.

[0034] Combination Figure 8 , Figure 9 As shown, the battery compartment bottom plate 7 of the battery swapping forklift has a side support structure, and the middle of the battery compartment bottom plate 7 is hollow, which allows the forklift's forks 4 to enter and lift the battery assembly 2.

[0035] The battery compartment bottom plate 7 has four through holes. When installing the battery assembly 2, the housing of the battery assembly 2 is fixedly connected to the battery compartment bottom plate 7 by passing four bolts through the through holes.

[0036] The battery compartment side door 6 is hinged to the battery compartment, and the battery compartment side door 6 needs to be opened when swapping batteries.

[0037] Combination Figure 6 , Figure 10 As shown, the specific steps for battery swapping using a forklift are as follows: S1. Before and after battery swapping, the new and old batteries are scanned and uploaded to the system by personnel respectively; S2. Turn off the forklift power before performing the battery swapping operation; S3. Manually open the battery compartment door and remove the fixing screws of the battery swapping plug 3, battery water circuit device and battery assembly 2 in sequence. S4. Drive the forklift to scoop out battery assembly 2 from the side; S5. Drive the forklift to load the fully charged battery pack 2 into the battery compartment from the side. S6. Manually connect the pipes of the battery swapping plug 3 and the water circuit module 21 and the fixing screws of the battery assembly 2; S7. Close the battery compartment door to complete the battery swap.

[0038] Combination Figure 7 , Figure 10As shown, when using a lifting AGV5 for battery swapping, the specific steps are roughly the same as when using a forklift. The difference is that the forklift used for the operation is replaced with a lifting AGV5. The top surface of the lifting AGV5 has a raised part that fits perfectly with the hollow part in the middle of the battery compartment bottom plate 7 to avoid interference.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery swapping system for a water-cooled, high-voltage lithium-ion counterbalance forklift, characterized in that, include: Battery swapping station (1), wherein a storage-type charging unit (11) is provided for centralized storage and charging of battery components (2). The battery assembly (2) includes a housing, a battery pack disposed in the housing, and a control module (24) installed on the upper end of the battery pack. The battery pack includes a battery module (23) and a water circuit module (21) for cooling the battery module (23). A battery swapping plug (3) is electrically connected to one side of the control module (24). The battery swapping system uses a transport vehicle to transfer and replace the battery assembly (2) between the battery swapping station (1) and the electric forklift.

2. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 1, characterized in that, The battery swapping station (1) also includes at least one battery swapping operation unit (13) located on the side of the storage charging unit (11), and the battery swapping operation unit (13) is provided with a battery swapping entrance (12) for the electric forklift to enter and exit.

3. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 2, characterized in that, The battery swapping station (1) also includes a maintenance department (14) isolated from the storage charging unit (11), and the maintenance department (14) is provided with a maintenance entrance (15).

4. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 1, characterized in that, The battery compartment bottom plate (7) of the electric forklift has a side support structure with a central hollow section, so as to allow the transport vehicle to enter and lift the battery assembly (2).

5. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 4, characterized in that, The battery compartment bottom plate (7) is provided with multiple through holes, and the housing of the battery assembly (2) is fixedly connected to the battery compartment bottom plate (7) by bolts passing through the through holes; the battery compartment side door (6) of the electric forklift is hinged to the battery compartment.

6. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 1, characterized in that, The battery swapping plug (3) includes a battery swapping socket (31) disposed on the battery assembly (2) and a battery swapping plug (32) disposed on the electric forklift. The battery swapping socket (31) is electrically connected to the control module (24).

7. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 6, characterized in that, The battery swapping plug-in (3) is a single-core power battery swapping plug-in or a 2+8 power and signal line combination battery swapping plug-in.

8. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 1, characterized in that, The water circuit module (21) includes a water-cooled box or water-cooled plate and water circuit pipes, and the water-cooled box or water-cooled plate is laid at the bottom of the battery module (23).

9. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 1, characterized in that, The means of transport is another forklift or a lifting AGV (5).

10. The battery swapping system for a water-cooled high-voltage lithium-ion counterbalanced forklift according to claim 1, characterized in that, It also includes a cloud management platform, which uploads battery usage records, usage counts and fault information to the cloud management platform by scanning the code of the battery component (2).

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