Electric forklift charging control system and working method thereof

Abstract

The invention discloses an electric forklift charging control system which comprises a battery, a DC-DC, an instrument, a motion controller VCU, a charging base, a key switch, a fuse A, a fuse B, a fuse C, a relay, a fuse D and a bottom layer controller, and the battery, the DC-DC, the motion controller VCU, the bottom layer controller and the instrument are connected through a CAN bus. In the charging process, the key switch is turned on, the instrument can display charging information, and meanwhile, the instrument can check controller version information and modify related controller parameters; therefore, different requirements of different customers on the charging process can be met; meanwhile, when the forklift is charged, a vehicle key switch can be turned on, an instrument is lightened, the instrument displays the vehicle state such as battery state information, and if the battery is in a heating state, the remaining heating time of the battery is displayed.

Description

Technical Field

[0001] The invention belongs to the field of forklift electrical control systems, and in particular relates to an electric forklift charging control system and a working method thereof. Background Art

[0002] With the vigorous development of logistics, warehousing and other industries, forklifts, as key equipment for material handling, are used more and more frequently.

[0003] Traditional forklift charging systems lack systematic control and cannot meet the various needs of customers. On the one hand, when charging a traditional forklift, the vehicle key switch cannot be turned on. After turning on the key switch, the charger will trip and report a short circuit fault. On the other hand, in harsh working environments, the charging information cannot be viewed in time when the charger instrument is damaged. When charging a traditional forklift, the controller parameter configuration cannot be viewed or modified through the instrument during charging. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides an electric forklift charging control system, which can turn on the key switch during the charging process, and the instrument can display the charging information. At the same time, the instrument can check the controller version information and modify the relevant controller parameters; to meet the different needs of different customers for the charging process; at the same time, it can turn on the car key switch when the forklift is charging, light up the instrument, and the instrument displays the vehicle status, such as battery status information. If the battery is in the heating state, it will display the remaining heating time of the battery, thereby solving the above-mentioned problems.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electric forklift charging control system, including: a battery, a DC-DC, an instrument, a motion controller VCU, a charging base, a key switch, a fuse A, a fuse B, a fuse C, a relay, a fuse D, and a bottom controller, wherein: The battery, DC-DC, motion controller VCU, bottom-level controller, and instrument are connected via CAN bus; The positive electrode of the battery is connected to the DC-DC control port C through the key switch and fuse A in sequence; The negative terminal of the battery is connected to the charging station, the motion controller VCU, the bottom controller, and the negative terminal of the instrument respectively; The B+ port of the battery is connected to the positive port of the DC-DC and the B+ port of the bottom controller through fuse B; The control port C of the battery is respectively connected to the key control port A1 of the motion controller VCU, the key control port T1 of the bottom controller, and the wire between the fuse A and the DC-DC control port C interface; The battery 12V+ port is connected to the positive port of the charging base, and the battery 12V- port is connected to the negative port of the charging base; The charging control port A2 of the motion controller VCU is connected to the negative terminal of the battery through a relay coil; The 12V+ port of the DC-DC is connected to the fuse C and the 12V+ port of the instrument respectively, the 12V- port of the DC-DC is connected to the negative port of the motion controller VCU and the 12V- port of the instrument respectively, the fuse C is connected to the fuse D, the 12V+ port of the motion controller VCU and the C1 port respectively through the relay switch contacts, and the 12V+ port of the charging base is connected to the fuse D.

[0006] Furthermore, the relay switch contact is a relay normally closed contact.

[0007] Furthermore, it also includes an emergency stop switch, which is arranged on the wire between the positive electrode of the battery and the key switch.

[0008] Furthermore, it also includes: a diode, which is arranged on the wire between the 12V+ port of the charging stand and the fuse D.

[0009] Furthermore, the battery, DC-DC, motion controller VCU, bottom controller and instrument are connected via a CAN bus, that is: The CANH port of the battery is connected to the CANH ports of the DC-DC, motion controller VCU, bottom controller, and instrument respectively, and the CANL port of the battery is connected to the CANL port of the DC-DC, motion controller VCU, bottom controller, and instrument respectively.

[0010] Furthermore, the battery is a lithium battery.

[0011] A working method of an electric forklift charging control system, when a key switch is turned on and no charging gun signal is detected, a battery control port C receives a signal, a battery B+ port outputs current, and a bottom controller is powered on; a DC-DC control port C receives a key switch signal, and the DC-DC starts to output 12V electricity, at which time an instrument and a motion controller VCU are powered, and a relay is a normally closed signal, and at this time the motion controller VCU is powered by the DC-DC.

[0012] Furthermore, when the vehicle is plugged in for charging, the 12V+ port of the charging dock is connected to the C1 port of the motion controller VCU through fuse D. At this time, the motion controller VCU receives the plug-in signal, and the A2 port of the motion controller VCU outputs a high level. The coil of relay KA2 is energized and attracted, and the normally closed contacts of the relay are disconnected. The charger cannot detect the discharge signal, ensuring that the charger will not trip when the vehicle key switch is turned on.

[0013] Furthermore, when the key switch is turned on, the instrument lights up, the motion controller VCU is powered by the charging base, and the motion controller VCU is awakened. At this time, the CAN line of the battery, the CAN line of the DC-DC, the CAN line of the instrument, and the CAN line of the underlying controller are all on the same line. During the charging process, the instrument can obtain the parameter information of the battery.

[0014] Furthermore, the control parameter information can be viewed on the instrument panel through CAN communication, and / or the control parameters can be modified, and the charging information can be viewed in time when the charger screen is damaged.

[0015] The beneficial effects of the present invention are as follows: during the charging process, the electric forklift charging control system can turn on the key switch, and the instrument can display the charging information. At the same time, the instrument can view the controller version information and modify the relevant controller parameters to meet the different needs of different customers during the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the system principle diagram of the present invention; In the figure: 1. Lithium battery; 2. DC-DC; 3. Instrument; 4. Motion controller VCU; 5. Charging station; 6. Emergency stop switch; 7. Key switch; 8. Fuse A; 9. Fuse B; 10. Fuse C; 11. Relay normally closed contact; 12. Diode; 13. Fuse D; 14. Relay coil; 15. Bottom controller. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0019] like Figure 1 As shown, an electric forklift charging control system includes: a lithium battery 1, a DC-DC 2, an instrument 3, a motion controller VCU 4, a charging base 5, an emergency stop switch 6, a key switch 7, a fuse A8, a fuse B9, a fuse C10, a relay, a diode 12, a fuse D13, and a bottom controller 15, wherein: The lithium battery 1, DC-DC 2, motion controller VCU 4, bottom controller 15, and instrument 3 are connected via a CAN bus; The positive electrode of the lithium battery 1 is connected to the control port C of the DC-DC2 through the emergency stop switch 6, the key switch 7, and the fuse A8 in sequence; The negative electrode port of the lithium battery 1 is respectively connected to the negative electrode port of the charging base 5, the motion controller VCU4, the bottom controller 15, and the instrument 3; The B+ port of the lithium battery 1 is connected to the positive port of the DC-DC2 and the B+ port of the bottom controller 15 through the fuse B9; The control port C of the lithium battery 1 is respectively connected to the key control port A1 of the motion controller VCU4, the key control port T1 of the bottom controller 15, and the wire between the fuse A8 and the control port C interface of the DC-DC2; The 12V+ port of the lithium battery 1 is connected to the positive port of the charging stand 5, and the 112V- port of the lithium battery is connected to the negative port of the charging stand 5; The charging control port A2 of the motion controller VCU4 is connected to the negative terminal of the lithium battery 1 through the relay coil 14; The 12V+ port of DC-DC2 is connected to the fuse C10 and the 12V+ port of the instrument 3 respectively, the 12V- port of DC-DC2 is connected to the negative port of the motion controller VCU4 and the 12V- port of the instrument 3 respectively, the fuse C10 is connected to the fuse D13, the 12V+ port of the motion controller VCU4 and the C1 port respectively through the normally closed contact 11 of the relay, and the 12V+ port of the charging base 5 is connected to the fuse D13 through the diode 12.

[0020] The lithium battery 1, DC-DC 2, motion controller VCU 4, bottom controller 15, and meter 3 are connected via a CAN bus, namely: The CANH port of the lithium battery 1 is connected to the CANH ports of the DC-DC2, the motion controller VCU4, the bottom controller 15 and the instrument 3 respectively, and the CANL port of the lithium battery 1 is connected to the CANL ports of the DC-DC2, the motion controller VCU4, the bottom controller 15 and the instrument 3 respectively.

[0021] A working method of an electric forklift charging control system, when the key switch 7 is turned on, no charging gun signal is detected, the control port C of the lithium battery 1 receives a signal, the B+ port of the lithium battery 1 outputs current, and the bottom controller 15 is powered on; the control port C of the DC-DC2 receives the key switch 7 signal, and the DC-DC2 starts to output 12V electricity. At this time, the instrument 3 and the motion controller VCU4 are powered, and the relay is a normally closed signal. At this time, the motion controller VCU4 is powered by the DC-DC2; When the vehicle is plugged in for charging, the 12V+ port of the charging station 5 is connected to the C1 port of the motion controller VCU4 through the fuse D13. At this time, the motion controller VCU4 receives the plug-in signal, and the A2 port of the motion controller VCU4 outputs a high level, and the coil of the relay KA2 is energized and attracted, then the normally closed contact 11 of the relay is disconnected, and the charger cannot detect the discharge signal, ensuring that the charger will not trip when the vehicle key switch 7 is turned on; At that time, the key switch 7 is turned on, the instrument 3 lights up, the motion controller VCU4 is powered by the charging base 5, and the motion controller VCU4 is awakened. At this time, the CAN line of the lithium battery 1, the CAN line of the DC-DC2, the CAN line of the instrument 3, and the CAN line of the bottom controller 15 are all on the same line. During the charging process, the instrument 3 can obtain parameter information of the lithium battery 1, such as: displaying the charging time, power, etc.; The control parameter information can also be viewed on the instrument 3 through CAN communication, and / or the control parameters can be modified, and the charging information can be viewed in time when the charger screen is damaged.

[0022] The above-mentioned lithium battery 1 can also be replaced by batteries made of other materials.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric forklift charging control system, characterized in that: include: Battery, DC-DC, instrument, motion controller VCU, charging stand, key switch, fuse A, fuse B, fuse C, relay, fuse D, bottom controller, among which, The battery, DC-DC, motion controller VCU, bottom-level controller, and instrument are connected via CAN bus; The positive electrode of the battery is connected to the DC-DC control port C through the key switch and fuse A in sequence; The negative terminal of the battery is connected to the charging station, the motion controller VCU, the bottom controller, and the negative terminal of the instrument respectively; The B+ port of the battery is connected to the positive port of the DC-DC and the B+ port of the bottom controller through fuse B; The control port C of the battery is respectively connected to the key control port A1 of the motion controller VCU, the key control port T1 of the bottom controller, and the wire between the fuse A and the DC-DC control port C interface; The battery 12V+ port is connected to the positive port of the charging base, and the battery 12V- port is connected to the negative port of the charging base; The charging control port A2 of the motion controller VCU is connected to the negative terminal of the battery through a relay coil; The 12V+ port of the DC-DC is connected to the fuse C and the 12V+ port of the instrument respectively, the 12V- port of the DC-DC is connected to the negative port of the motion controller VCU and the 12V- port of the instrument respectively, the fuse C is connected to the fuse D, the 12V+ port of the motion controller VCU and the C1 port respectively through the relay switch contacts, and the 12V+ port of the charging base is connected to the fuse D.

2. The electric forklift charging control system according to claim 1, characterized in that: The relay switch contacts are relay normally closed contacts.

3. The electric forklift charging control system according to claim 1, characterized in that: The utility model also comprises an emergency stop switch, which is arranged on a wire between the positive pole of the battery and the key switch.

4. An electric forklift charging control system according to claim 1 or 3, characterized in that: Also includes: A diode is provided on the wire between the 12V+ port of the charging cradle and the fuse D.

5. The electric forklift charging control system according to claim 1, characterized in that: The battery, DC-DC, motion controller VCU, bottom controller and instrument are connected via CAN bus, namely: The CANH port of the battery is connected to the CANH ports of the DC-DC, motion controller VCU, bottom controller, and instrument respectively, and the CANL port of the battery is connected to the CANL port of the DC-DC, motion controller VCU, bottom controller, and instrument respectively.

6. The electric forklift charging control system according to claim 1, characterized in that: The battery is a lithium battery.

7. The working method of an electric forklift charging control system according to claim 2, characterized in that: When the key switch is turned on and no charging gun signal is detected, the battery control port C receives a signal, the battery's B+ port outputs current, and the underlying controller is powered on; the DC-DC's control port C receives a key switch signal, and the DC-DC starts to output 12V electricity. At this time, the instrument and motion controller VCU are powered, and the relay is a normally closed signal. At this time, the motion controller VCU is powered by the DC-DC.

8. The working method of the electric forklift charging control system according to claim 7, characterized in that: When the vehicle is plugged in for charging, the 12V+ port of the charging dock is connected to the C1 port of the motion controller VCU through fuse D. At this time, the motion controller VCU receives the plug-in signal, and the A2 port of the motion controller VCU outputs a high level. The coil of relay KA2 is energized and attracted, then the normally closed contacts of the relay are disconnected, and the charger cannot detect the discharge signal, ensuring that the charger will not trip when the vehicle key switch is turned on.

9. The working method of the electric forklift charging control system according to claim 8, characterized in that: When the key switch is turned on, the instrument lights up, the motion controller VCU is powered by the charging base, and the motion controller VCU is awakened. At this time, the CAN line of the battery, the CAN line of the DC-DC, the CAN line of the instrument, and the CAN line of the underlying controller are all on the same line. During the charging process, the instrument can obtain the battery parameter information.

10. The working method of the electric forklift charging control system according to claim 9, characterized in that: You can also view control parameter information and / or modify control parameters on the instrument panel via CAN communication, and view charging information in a timely manner when the charger screen is damaged.

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