Forklift battery device and system

Abstract

The invention provides a forklift battery device and system, and relates to the technical field of electronic information, the forklift battery device comprises a BMS all-in-one machine, a whole vehicle communication port and a power supply module, and the whole vehicle communication port is connected with the BMS all-in-one machine and the power supply module; wherein the BMS all-in-one machine is used for carrying out safety detection on the temperature, the voltage and the insulation value of a forklift battery device and the adhesion condition of a relay, and sending a safety detection result to the whole vehicle communication port; the whole vehicle communication port is used for performing CAN communication with the whole vehicle end VCU, sending a safety detection result to the whole vehicle end VCU and receiving an upper high voltage instruction and a lower high voltage instruction issued by the whole vehicle end VCU; and the power supply module is used for adjusting power-on and power-off states according to the upper high-voltage instruction and the lower high-voltage instruction so as to supply power to the forklift driving motor and forklift equipment. The service life of the forklift battery can be remarkably prolonged, and then the working efficiency of the forklift is improved.

Description

Technical Field

[0001] The present invention relates to the field of electronic information technology, and in particular to a forklift battery device and system. Background Art

[0002] As countries around the world are increasingly aware of environmental protection, traditional internal combustion forklifts are gradually being replaced by electric forklifts. As a clean and efficient logistics equipment, electric forklifts have a very broad prospect. With the pressure of ecological environmental protection and the impact of energy resources, electric forklifts are gradually entering the formal development stage. At present, relevant technologies have proposed that the battery technology can be improved to increase the cruising range of forklifts, thereby improving the handling efficiency of forklifts and reducing the waste of human resources. However, existing forklift battery devices often lack sufficient safety protection. During the battery charging process, excessive voltage can easily damage the forklift battery device, thereby reducing the service life of the forklift battery, which in turn causes the forklift to need to be charged frequently, thus affecting the working efficiency of the forklift. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a forklift battery device and system, which can significantly increase the service life of the forklift battery, thereby improving the working efficiency of the forklift.

[0004] In the first aspect, an embodiment of the present invention provides a forklift battery device, which includes: a BMS all-in-one machine, a vehicle communication port and a power supply module, wherein the vehicle communication port is respectively connected to the BMS all-in-one machine and the power supply module; wherein the BMS all-in-one machine is used to perform safety detection on the temperature, voltage, insulation value and adhesion of the relay of the forklift battery device, and send the safety detection result to the vehicle communication port; the vehicle communication port is used to perform CAN communication with the vehicle-end VCU, send the safety detection result to the vehicle-end VCU, and receive the upper high-voltage instructions and the lower high-voltage instructions issued by the vehicle-end VCU; the power supply module is used to adjust the power-on and power-off states according to the upper high-voltage instructions and the lower high-voltage instructions to supply power to the forklift drive motor and forklift equipment.

[0005] In one embodiment, the power supply module includes: a first power supply module, the first power supply module includes: a discharge positive circuit and a discharge negative circuit, and the forklift drive motor is respectively connected to the discharge positive circuit and the discharge negative circuit; wherein the first power supply module is used to power the forklift drive motor.

[0006] In one embodiment, the discharge positive circuit includes: module total positive, discharge positive, main circuit fuse and total positive relay, and the discharge negative circuit includes: module total negative, discharge negative and shunt; wherein, the main circuit fuse is respectively connected to the module total positive and total positive relay, and the discharge positive is respectively connected to the total positive relay and the positive pole of the forklift drive motor; the shunt is respectively connected to the module total negative and discharge negative, and the discharge negative is connected to the negative pole of the forklift drive motor.

[0007] In one embodiment, the power supply module includes: a second power supply module, the second power supply module includes: a DCDC interface, the DCDC interface is connected to the low-voltage power supply interface of the vehicle end; wherein the second power supply module is used to supply power to the forklift equipment through the DCDC interface.

[0008] In one embodiment, the second power supply module also includes: a DC fuse, which is connected to the DCDC interface; wherein the DC fuse is used to blow when the low-voltage power supply interface at the vehicle end connected to the DCDC interface is short-circuited, so as to cut off the DC circuit and protect the second power supply module.

[0009] In one embodiment, the forklift battery device also includes: a charging module, the charging module includes: a charging port and a charging positive relay, the charging positive relay is respectively connected to the charging port and the main positive relay; wherein, the charging port is used to connect with an external charging pile; the charging positive relay is used to perform fast charging when the external charging pile is charging.

[0010] In one embodiment, the forklift battery device further includes: a heating module, the heating module includes: a heating positive relay, a heating negative relay and a heating resistor, the heating resistor is respectively connected to the heating positive relay and the heating negative relay; wherein the heating module is used to turn on heating in a low temperature environment to extend the battery life.

[0011] In one embodiment, the heating module further includes: a heating fuse, which is connected to the heating positive relay; wherein the heating fuse is used to melt when the heating module is short-circuited to cut off the heating circuit to protect the heating module.

[0012] In one embodiment, the BMS integrated machine includes: a module voltage and temperature acquisition unit, a PACK+ high-voltage detection port, a PACK- high-voltage detection port, a total positive high-voltage detection port, and a heating positive high-voltage detection port; wherein the module voltage and temperature acquisition unit is used to perform voltage detection on each battery cell in the battery device and detect the temperature of the battery device; the PACK+ high-voltage detection port and the PACK- high-voltage detection port are used to detect the insulation value of the battery device and determine whether the insulation value is within a preset safety insulation value range; the total positive high-voltage detection port and the heating positive high-voltage detection port are used to detect the adhesion of the total positive relay and the heating relay.

[0013] In a second aspect, an embodiment of the present invention further provides a forklift battery system, the forklift battery system comprising: a forklift battery device as provided in any one of the first aspects, as well as an external charging pile, a forklift drive motor and a forklift equipment.

[0014] The embodiments of the present invention bring the following beneficial effects: A forklift battery device and system are provided in an embodiment of the present invention. The forklift battery device includes: a BMS all-in-one machine, a vehicle communication port and a power supply module, wherein the vehicle communication port is respectively connected to the BMS all-in-one machine and the power supply module; wherein the BMS all-in-one machine is used to perform safety detection on the temperature, voltage, insulation value and adhesion condition of the relay of the forklift battery device, and send the safety detection result to the vehicle communication port; the vehicle communication port is used to perform CAN communication with the vehicle-end VCU, send the safety detection result to the vehicle-end VCU, and receive the upper high-voltage instruction and the lower high-voltage instruction issued by the vehicle-end VCU; the power supply module is used to adjust the power-on and power-off states according to the upper high-voltage instruction and the lower high-voltage instruction to supply power to the forklift drive motor and forklift equipment. The embodiment of the present invention can significantly improve the service life of the forklift battery, thereby improving the working efficiency of the forklift.

[0015] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a forklift battery device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the specific structure of a forklift battery device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the specific structure of a BMS integrated machine provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a forklift battery system provided by an embodiment of the present invention.

[0019] Icon: 100-forklift battery device; 200-forklift drive motor; 300-forklift equipment; 400-external charging pile; 110-BMS integrated machine; 120-vehicle communication port; 130-power supply module. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] At present, with the increasing awareness of environmental protection in countries around the world, traditional internal combustion forklifts are gradually being replaced by electric forklifts. As a clean and efficient logistics equipment, electric forklifts have a very broad prospect. With the pressure of ecological environmental protection and the influence of energy resources, electric forklifts have gradually entered the formal development stage. At the same time, with the enhancement of safety awareness, the safety performance requirements of dangerous goods production, storage and transportation equipment are getting higher and higher. Forklifts are important equipment for storage and transportation. With the continuous improvement of battery technology, the cruising range of electric forklifts is also constantly improving. At this time, electric forklifts are gradually being promoted to the commercial market. With the rapid development of the logistics industry, improving logistics efficiency has become one of the goals pursued by various companies.

[0022] In modern logistics, electric forklifts play a very important role. They can improve the handling efficiency of forklifts and reduce the waste of human resources. At the same time, they also play a vital role in environmental protection. Electric forklifts have many advantages in terms of safety, efficiency, and environmental protection. At present, relevant technologies have proposed that the battery technology can be improved to increase the cruising range of forklifts, thereby improving the handling efficiency of forklifts and reducing the waste of human resources. However, existing forklift battery devices often lack sufficient safety protection. During the battery charging process, excessive voltage can easily damage the forklift battery device, thereby reducing the service life of the forklift battery, which in turn requires frequent charging of the forklift, thereby affecting the working efficiency of the forklift. Based on this, the forklift battery device and system provided by the implementation of the present invention can significantly increase the service life of the forklift battery, thereby improving the working efficiency of the forklift.

[0023] To facilitate understanding of this embodiment, a forklift battery device disclosed in an embodiment of the present invention is first described in detail. Figure 1A schematic diagram of a forklift battery device is shown, the forklift battery device includes: a BMS integrated machine 110, a vehicle communication port 120 and a power supply module 130, the vehicle communication port 120 is respectively connected to the BMS integrated machine 110 and the power supply module 130; wherein the BMS integrated machine 110 is used to perform safety detection on the temperature, voltage, insulation value and adhesion of the relay of the forklift battery device, and send the safety detection result to the vehicle communication port 120; the vehicle communication port 120 is used to perform CAN communication with the vehicle-end VCU, send the safety detection result to the vehicle-end VCU, and receive the upper high-voltage command and the lower high-voltage command issued by the vehicle-end VCU; the power supply module 130 is used to adjust the power-on and power-off states according to the upper high-voltage command and the lower high-voltage command to supply power to the forklift drive motor 200 and the forklift equipment 300.

[0024] The forklift battery device provided by the embodiment of the present invention can significantly increase the service life of the forklift battery, thereby improving the working efficiency of the forklift.

[0025] In one embodiment, see Figure 2 In the specific structural diagram of a forklift battery device shown, the power supply module 130 includes: a first power supply module and a second power supply module.

[0026] The first power supply module includes: a discharge positive circuit and a discharge negative circuit, and the forklift drive motor 200 is respectively connected to the discharge positive circuit and the discharge negative circuit, and the discharge positive circuit includes: a module total positive, a discharge positive, a main circuit fuse and a total positive relay; the discharge negative circuit includes: a module total negative, a discharge negative and a shunt, and the main circuit fuse is respectively connected to the module total positive and the total positive relay; the discharge positive is respectively connected to the total positive relay and the positive pole of the forklift drive motor 200; the shunt is respectively connected to the module total negative and the discharge negative, and the discharge negative is connected to the negative pole of the forklift drive motor 200. The first power supply module is used to supply power to the forklift drive motor 200.

[0027] In addition, the first power supply module also includes: a pre-charging relay, which is connected to the charging positive relay of the charging port, the charging positive relay is used for fast charging, the pre-charging relay is used to charge the capacitor to fully charge, the pre-charging relay is also connected to the main positive relay, and the main positive relay is used to power the forklift drive motor 200.

[0028] The second power supply module includes: a DCDC interface and a DC fuse. The DCDC interface is connected to the low-voltage power supply interface on the vehicle end. The DC fuse is connected to the DCDC interface. The DC fuse is used to blow when the low-voltage power supply interface on the vehicle end connected to the DCDC interface is short-circuited, so as to cut off the DC loop and protect the second power supply module. The second power supply module is used to supply power to the forklift equipment 300 through the DCDC interface.

[0029] Specifically, when the DCDC port on the battery box (i.e., DCDC interface) inputs a voltage of 75V-109.5V to the DCDC on the vehicle side, the DCDC on the vehicle side (i.e., the low-voltage power supply interface on the vehicle side) converts the voltage input by the battery into a 12V voltage to provide low-voltage power to other devices on the vehicle. If the DCDC input port on the vehicle is short-circuited, the DC fuse in the battery box will be blown, thereby cutting off the circuit to protect the battery.

[0030] Furthermore, the forklift battery device also includes: a charging module, the charging module includes: a charging port and a charging positive relay, the charging positive relay is respectively connected to the charging port and the main positive relay; wherein, the charging port is used to connect with the external charging pile 400; the charging positive relay is used to perform fast charging when the external charging pile 400 is charging.

[0031] In addition, the forklift battery device also includes: a heating module, the heating module includes: a heating positive relay, a heating negative relay, a heating resistor and a heating fuse, the heating resistor is respectively connected to the heating positive relay and the heating negative relay, the heating fuse is connected to the heating positive relay, the heating fuse is used to blow when the heating module is short-circuited to cut off the heating circuit to protect the heating module, and the heating module is used to turn on heating in a low temperature environment to extend the battery life.

[0032] In one embodiment, see Figure 3 A specific structural schematic diagram of a BMS all-in-one machine 110 is shown, and the BMS all-in-one machine 110 includes: a module voltage and temperature acquisition unit, a PACK+ high-voltage detection port, a PACK- high-voltage detection port, a total positive high-voltage detection port and a heating positive high-voltage detection port; wherein, the module voltage and temperature acquisition unit is used to perform voltage detection on each battery cell in the battery device and detect the temperature of the battery device; the PACK+ high-voltage detection port and the PACK- high-voltage detection port are used to detect the insulation value of the battery device and determine whether the insulation value is within the preset safety insulation value range; the total positive high-voltage detection port and the heating positive high-voltage detection port are used to detect the adhesion of the total positive relay and the heating relay.

[0033] Specifically, when the forklift is powered on and the key is turned on, the BMS integrated machine 110 in the battery box is activated. At this time, the BMS integrated machine 110 will detect the voltage of each battery cell and detect whether the temperature on the battery module is within a safe range. The BMS integrated machine 110 detects whether the insulation value of the battery module is within a safe range through the high-voltage detection ports PACK+ and PACK-. The BMS integrated machine 110 determines whether the total positive relay and the heating positive relay are adhered through the total positive high voltage detection and the heating positive high voltage detection. If an abnormality is detected, the BMS integrated machine 110 will send a prohibition of high voltage instruction to the vehicle-side VCU (that is, stop power supply), and the fault level will be reported as a level three fault. If there is no abnormality, the BMS will send a self-test completion message to the vehicle-side VCU, and the fault level will be no fault. The vehicle-side VCU After receiving the instructions of no fault and self-test completion, the CU will send a high-voltage instruction to the BMS machine 110 (i.e., start power supply). After receiving the high-voltage instruction, the BMS machine 110 will close the pre-charging relay and judge whether the pre-charging is successful by the internal and external total pressure. Among them, within 3 seconds after the pre-charging relay is closed, when the external total pressure reaches 90% of the internal total pressure, the BMS machine 110 will judge that the pre-charging is successful, and then close the total positive relay and disconnect the pre-charging relay. If the pre-charging condition is not met, the BMS machine 110 will report the pre-charging failure fault to the VCU and the BMS machine 110 will report a third-level fault. After receiving the fault reported by the BMS, the VCU will send a high-voltage lowering instruction for the whole vehicle. Among them, the high-voltage lowering instruction for the whole vehicle has the same function as the prohibition of the high-voltage upper instruction, which is used to control the forklift battery device to stop supplying power to the forklift.

[0034] For the forklift battery device provided in the above embodiment, the present invention also provides a forklift battery system, see Figure 4 A structural schematic diagram of a forklift battery system is shown, which includes the forklift battery device 100 provided in the aforementioned embodiment, as well as an external charging pile 400, a forklift drive motor 200 and a forklift equipment 300. The external charging pile 400 is used to charge the forklift battery device 100. After receiving the upper high voltage command sent by the vehicle-end VCU, the forklift battery device 100 supplies power to the forklift drive motor 200 and the forklift equipment 300.

[0035] In summary, the present invention uses the BMS all-in-one machine 110 to perform safety detection on the temperature, voltage, insulation value and adhesion of the relay of the forklift battery device 100 and report faults in a timely manner, and the power supply module 130 and the heating module protect the circuit, which can significantly improve the service life of the forklift battery, fully utilize the battery performance, and thus improve the working efficiency of the forklift.

[0036] The device provided in the embodiment of the present invention has the same implementation principle and technical effects as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0037] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A forklift battery device, characterized in that: The forklift battery device comprises: a BMS integrated machine, a vehicle communication port and a power supply module, wherein the vehicle communication port is respectively connected to the BMS integrated machine and the power supply module; wherein, The BMS integrated machine is used to perform safety detection on the temperature, voltage, insulation value and adhesion of the relay of the forklift battery device, and send the safety detection result to the vehicle communication port; The vehicle communication port is used to perform CAN communication with the vehicle-side VCU, send the safety detection result to the vehicle-side VCU, and receive the upper high-voltage instruction and the lower high-voltage instruction issued by the vehicle-side VCU; The power supply module is used to adjust the power-on and power-off states according to the upper high-voltage instruction and the lower high-voltage instruction to supply power to the forklift drive motor and the forklift equipment.

2. The forklift battery device according to claim 1, characterized in that: The power supply module includes: a first power supply module, the first power supply module includes: a discharge positive circuit and a discharge negative circuit, the forklift drive motor is respectively connected to the discharge positive circuit and the discharge negative circuit; wherein, the first power supply module is used to supply power to the forklift drive motor.

3. The forklift battery device according to claim 2, characterized in that: The discharge positive circuit includes: module total positive, discharge positive, main circuit fuse and total positive relay, and the discharge negative circuit includes: module total negative, discharge negative and shunt; wherein, The main circuit fuse is connected to the module total positive and the total positive relay respectively, and the discharge positive is connected to the total positive relay and the positive pole of the forklift driving motor respectively; The shunt is connected to the total negative of the module and the discharge negative respectively, and the discharge negative is connected to the negative pole of the forklift driving motor.

4. The forklift battery device according to claim 1, characterized in that: The power supply module includes: a second power supply module, the second power supply module includes: a DCDC interface, the DCDC interface is connected to the low-voltage power supply interface of the vehicle end; wherein, The second power supply module is used to supply power to the forklift device through the DCDC interface.

5. The forklift battery device according to claim 4, characterized in that: The second power supply module further includes: a DC fuse, the DC fuse is connected to the DCDC interface; wherein, The DC fuse is used to fuse when the low-voltage power supply interface at the vehicle end connected to the DCDC interface is short-circuited, so as to cut off the DC loop and protect the second power supply module.

6. The forklift battery device according to claim 1, characterized in that: The forklift battery device further comprises: a charging module, the charging module comprises: a charging port and a charging positive relay, the charging positive relay is respectively connected to the charging port and the main positive relay; wherein, The charging port is used to connect to an external charging pile; The charging positive relay is used for fast charging when the external charging pile is charging.

7. The forklift battery device according to claim 1, characterized in that: The forklift battery device further comprises: a heating module, the heating module comprises: a heating positive relay, a heating negative relay and a heating resistor, the heating resistor is connected to the heating positive relay and the heating negative relay respectively; wherein, The heating module is used to turn on heating in a low temperature environment to extend the battery life.

8. The forklift battery device according to claim 7, characterized in that: The heating module further comprises: a heating fuse, wherein the heating fuse is connected to the heating positive relay; wherein, The heating fuse is used to fuse when the heating module is short-circuited, so as to cut off the heating circuit and protect the heating module.

9. The forklift battery device according to claim 1, characterized in that: The BMS integrated machine includes: a module voltage and temperature acquisition unit, a PACK+ high-voltage detection port, a PACK- high-voltage detection port, a total positive high-voltage detection port, and a heating positive high-voltage detection port; wherein, The module voltage and temperature acquisition unit is used to detect the voltage of each battery cell in the battery device and detect the temperature of the battery device; The PACK+ high-voltage detection port and the PACK- high-voltage detection port are used to detect the insulation value of the battery device and determine whether the insulation value is within a preset safety insulation value range; The total positive high voltage detection port and the heating positive high voltage detection port are used to detect the adhesion of the total positive relay and the heating relay.

10. A forklift battery system, characterized in that: The forklift battery system comprises: the forklift battery device according to any one of claims 1 to 9, as well as an external charging pile, a forklift drive motor and a forklift equipment.

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