Pure electric excavator power-on control system and vehicle

Abstract

The utility model discloses a pure electric excavator power-on control system and a vehicle, and belongs to the technical field of mechanical control, and the pure electric excavator power-on control system comprises a power supply management assembly, a display control assembly and a battery management assembly which are connected with one another through CAN lines; the power supply management assembly is provided with a constant-electricity power-on unit and a wake-up power-on unit. The display control assembly is provided with a low-voltage starting switch, a high-voltage starting switch and a control part; the input ends of the constant-electricity power-on unit and the wake-up power-on unit are externally connected with a low-voltage power supply, and the output ends are externally connected with low-voltage motor parts of the pure-electric excavator; the low-voltage starting switch is connected with the input end of the wake-up power-on unit and the input end of the constant power-on unit through the control component. The high-voltage starting switch is connected with the input end of the battery management assembly through the control component. According to the utility model, low-voltage and high-voltage power-on is provided for the excavator through the display control assembly, the power supply management assembly and the battery management assembly, so that the power-on automation control and information interaction functions of the excavator are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical control, and in particular to a power-on control system for a pure electric excavator and a vehicle. Background Art

[0002] With the rapid development of electric transmission technology and the electronics industry, as well as the increasing requirements for environmental protection and energy conservation and emission reduction, the market demand for pure electric excavators continues to grow, and the technology of pure electric excavators has also developed rapidly. The electric motor of a pure electric excavator has a high energy conversion rate and can provide stronger power output. Among them, the power-on control system of a pure electric excavator is a key component, which can provide low-voltage and high-voltage electricity for the pure electric excavator.

[0003] In existing technology, pure electric excavators use a high-voltage power supply to provide high-voltage power, and a low-voltage power system to provide power to auxiliary components (such as lighting, signals, and controls). This process is crucial to ensure the proper operation of auxiliary components and the safety of the operator. However, existing technology cannot achieve automated power-on control of the high- and low-voltage power supplies through simple on-off control.

[0004] Therefore, there is an urgent need for a pure electric excavator power-on control system and vehicle that can provide low-voltage and high-voltage power-on for the excavator and realize automatic power-on control of the excavator. Utility Model Content

[0005] In view of this, it is necessary to provide a pure electric excavator power-on control system and vehicle, which can provide low-voltage and high-voltage power-on for the excavator and realize automatic power-on control of the excavator.

[0006] In order to achieve the above-mentioned purpose, on the one hand, the utility model provides a pure electric excavator power-on control system, comprising: a power management component, a display and control component, and a battery management component; the power management component, the display and control component, and the battery management component are connected to each other through a CAN line;

[0007] The power management component is provided with a normal power-on unit and a wake-up power-on unit; the display and control component is provided with a low-voltage start switch, a high-voltage start switch and a control component;

[0008] The input ends of the normal power-on unit and the wake-up power-on unit are externally connected to a low-voltage power supply, and the output ends are externally connected to various low-voltage motor components of the pure electric excavator;

[0009] The low-voltage startup switch is connected to the input terminals of the wake-up power supply unit and the normal power supply unit through the control component, and is used to control the power management component to output the wake-up power and the normal power;

[0010] The high-voltage starting switch is connected to the input end of the battery management component through the control component, and is used to control the battery management component to output high voltage electricity.

[0011] In one possible implementation, the battery management assembly includes a relay box and a detection component;

[0012] The input end of the relay is connected to the high-voltage starting switch, and the output end is connected to the detection component.

[0013] In one possible implementation, the display and control component further includes a display screen;

[0014] The display screen is connected to the detection component and is used to display power-on information.

[0015] In a possible implementation, a motor controller is further included, and the motor controller is connected to the output end of the battery management component and the output end of the power management component respectively.

[0016] In a possible implementation, the permanent power-on unit includes: a first pin, a second pin, and a third parallel pin group consisting of a plurality of pins connected in parallel;

[0017] The first pin, the second pin and the third parallel pin are connected in series in sequence;

[0018] The output ends of the third parallel pin group are respectively connected to the battery management component, the display and control component and the motor controller.

[0019] In a possible implementation, the permanent power supply unit further includes: a first main fuse box and a first low-voltage permanent power fuse box;

[0020] One end of the first main fuse box is connected to the first pin, and the other end is connected to the second pin;

[0021] One end of the first low-voltage constant-current fuse box is connected to the second pin, and the other end is connected to the third parallel pin group.

[0022] In a possible implementation, the wake-up power-on unit includes: a fourth pin, a fifth pin, a power-on relay, and a sixth parallel pin group consisting of a plurality of pins connected in parallel;

[0023] The fourth pin, the fifth pin, the power-on relay and the sixth parallel pin group are connected in series in sequence;

[0024] The output ends of the sixth parallel pin group are respectively connected to the battery management component, the display and control component and the motor controller.

[0025] In a possible implementation, the wake-up power-on unit further includes: a second main fuse box and a second low-voltage normal power fuse box;

[0026] One end of the second main fuse box is connected to the fourth pin, and the other end is connected to the fifth pin;

[0027] One end of the second low-voltage normal power fuse box is connected to the power-on relay, and the other end is connected to the sixth parallel pin group.

[0028] In one possible implementation, the power-on relay is provided with a power pin, a main contact, a positive control line pin, and a negative control line pin:

[0029] One end of the power pin is connected to the fifth pin, and the other end is selectively connected to one end of the main contact, and the other end of the main contact is connected to the second low-voltage normal power fuse box;

[0030] The positive control line pin is externally connected to a display and control component;

[0031] The negative control line pin is grounded.

[0032] In a second aspect, the present invention further provides a pure electric excavator vehicle, which is provided with a pure electric excavator power-on control system, so that the vehicle can be powered on according to the power-on control system described above.

[0033] The beneficial effects of the present utility model are as follows: the power-on control system connects the power management component, the display and control component, and the battery management component in pairs through CAN lines to perform information exchange between the components; the power management component is provided with a normal power-on unit and a wake-up power-on unit; the display and control component is provided with a low-voltage starting switch, a high-voltage starting switch, and a control component; the input ends of the normal power-on unit and the wake-up power-on unit are externally connected to a low-voltage power supply, and the output ends are externally connected to the various low-voltage motor components of the pure electric excavator, providing wake-up power and normal power for the excavator; the low-voltage starting switch is connected to the input ends of the wake-up power-on unit and the normal power-on unit through the control component, and controls the power management component to output the wake-up power and normal power through the low-voltage starting switch; the high-voltage starting switch is connected to the input end of the battery management component through the control component, and controls the battery management component to output high-voltage power through the high-voltage starting switch. The utility model provides normal power and wake-up power for the pure electric excavator through the power management component, and provides high-voltage power for the pure electric excavator through the battery management component, thereby realizing automatic power-on control of the pure electric excavator. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a schematic diagram of the structure of the power-on control system for a pure electric excavator provided by the utility model;

[0036] Figure 2 This is a schematic diagram of the structure of the permanent power-on unit provided by the utility model;

[0037] Figure 3 This is a structural diagram of the wake-up power-on unit provided by the utility model. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] In the description of the embodiments of this utility model, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0040] The terms "first," "second," and so forth in the embodiments of this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, technical features designated as "first" or "second" may explicitly or implicitly include at least one such feature.

[0041] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The utility model provides a pure electric excavator power-on control system and a vehicle, which are described below respectively.

[0043] In some embodiments of the present invention, Figure 1 As shown, Figure 1 This is a structural diagram of the power-on control system for a pure electric excavator provided by the present invention, which includes: a power management component 1, a display and control component 3, and a battery management component 2;

[0044] The power management component 1, display control component 3 and battery management component 2 are connected to each other through CAN lines;

[0045] The power management component 1 is provided with a normal power-on unit 4 and a wake-up power-on unit 5; the display and control component 3 is provided with a low-voltage start switch 9, a high-voltage start switch 10 and a control component (not shown in the figure);

[0046] The input ends of the normal power-on unit 4 and the wake-up power-on unit 5 are externally connected to a low-voltage power supply, and the output ends are externally connected to various low-voltage motor components of the pure electric excavator;

[0047] The low-voltage start switch 9 is connected to the input terminals of the wake-up power supply unit 5 and the normal power supply unit 4 through the control component, and is used to control the power management component to output the wake-up power and the normal power;

[0048] The high-voltage starting switch 10 is connected to the input end of the battery management component through a control component, and is used to control the battery management component to output high voltage electricity.

[0049] It should be noted that the external low-voltage power supply of the power management component 1 is the positive pole of a small battery connected to the input end of the power management component 1 through a wire, directly providing normal power for the pure electric excavator, or providing wake-up power according to the control signal of the low-voltage starting switch 9; the display and control component 3 is connected to the power management component 1 and the battery management component 2 through the CAN line 11 to transmit different power-on instructions; the battery management component 2 includes a battery management system BMS component, which provides high-voltage power for the high-voltage motor provided by the pure electric excavator.

[0050] In this embodiment, information exchange is carried out between the components by connecting the power management component 1, the display and control component 3 and the battery management component 2 to each other through the CAN line 11; the power management component 1 is provided with a normal power supply unit 4 and a wake-up power supply unit 5; the display and control component 3 is provided with a low-voltage starting switch 9, a high-voltage starting switch 10 and a control component; the input ends of the normal power supply unit 4 and the wake-up power supply unit 5 are externally connected to a low-voltage power supply, and the output ends are externally connected to the low-voltage motor components of the pure electric excavator to provide wake-up power and normal power for the excavator; the low-voltage starting switch 9 is connected to the input ends of the wake-up power supply unit 5 and the normal power supply unit 4 through the control component, and controls the power management component 1 to output wake-up power and normal power through the low-voltage starting switch 9; the high-voltage starting switch 10 is connected to the input end of the battery management component 2 through the control component, and controls the battery management component 2 to output high-voltage power through the high-voltage starting switch 10.

[0051] The utility model provides normal power and wake-up power for the pure electric excavator through the power management component, provides high-voltage power-up for the pure electric excavator through the battery management component, and controls low-voltage and high-voltage power-up through the display and control component, thereby realizing automatic power-up control of the pure electric excavator.

[0052] In some embodiments of the present invention, the battery management assembly includes a relay box 6 and a detection component 7 . The input end of the relay box 6 is connected to the high-voltage starting switch 10 , and the output end is connected to the detection component 7 .

[0053] This embodiment controls the switch in the relay box 6 to conduct according to the signal of the high-voltage starting switch 10, realizes high-voltage output, provides high-voltage power-up for the high-voltage motor components of the excavator, and detects the output high-voltage information of the relay box 6 in real time through the detection component 7.

[0054] In some embodiments of the present invention, the display and control component further includes a display screen, and the display screen 8 is connected to the detection component 7 and is used to display power-on information.

[0055] In this embodiment, the display screen 8 is connected to the detection component 7 to display the output high voltage information of the relay box 6 detected in real time on the display screen 8, thereby realizing the information interaction function.

[0056] In some embodiments of the present invention, a motor controller (not shown) is further included, and the motor controller is connected to the output end of the battery management component 2 and the output end of the power management component 1 respectively.

[0057] Specifically, the motor controller is responsible for controlling the speed, direction and output power of the motor. By connecting to the power management component 1, when the motor controller is in a power-off state, the power management component 1 outputs a wake-up signal to the motor controller according to the control signal, and the battery management component 2 outputs high voltage electricity to the motor controller through the relay box 6. The motor controller outputs three-phase AC power according to the set frequency to drive the motor to work.

[0058] In some embodiments of the present invention, Figure 2 As shown, Figure 2 This is a structural diagram of a permanent power-on unit provided by the present invention. The permanent power-on unit comprises: a first pin 12, a second pin 14 and a third parallel pin group 16 consisting of a plurality of pins connected in parallel;

[0059] The first pin 12, the second pin 14 and the third parallel pin group 16 are connected in series in sequence;

[0060] The output ends of the third parallel pin group 16 are respectively connected to the battery management component, the display and control component and the motor controller.

[0061] Specifically, if Figure 2As shown, the first pin 12 and the second pin 14 are interface pins numbered J01 and J02 respectively, which are used to realize electrical connection and data transmission between devices; multiple pins in the third parallel pin group 16, among which the C01 pin is the capacitor or controller pin number, the output end of the C01 pin is connected to the battery management system to provide long-term power for the battery management system, the D01 pin is a digital interface pin for data transmission and communication, the D01 pin output end is connected to the display and control component to provide normal power for the display and control component, the D05 and D06 pins are specific pin chips, D05 is used to provide all-in-one normal power, and D06 is connected to the motor controller to provide low-voltage normal power for the motor controller. Only the above 4 pins are shown in the figure here, but are not limited to the above 4 types. Corresponding pins can be added according to the needs of the excavator motor components.

[0062] In this embodiment, a normal power supply unit is used to provide normal power to various low-voltage motor components of the excavator.

[0063] In some embodiments of the present invention, the permanent power supply unit further includes: a first main fuse box 13 and a first low-voltage permanent power fuse box 15;

[0064] One end of the first main fuse box 13 is connected to the first pin 12, and the other end is connected to the second pin 14;

[0065] One end of the first low-voltage constant-current fuse box 15 is connected to the second pin 14 , and the other end is connected to the third parallel pin group 16 .

[0066] In this embodiment, the first main fuse box 13 is used to protect the normal voltage output from the first pin to prevent the normal voltage from being too high. The first low-voltage normal voltage fuse box 15 is used to protect the voltage at the input end of the third parallel pin group 16.

[0067] In some embodiments of the present invention, Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of the wake-up power-on unit provided by the present invention, comprising: a fourth pin 17, a fifth pin 19, a power-on relay 23 and a sixth parallel pin group 22 consisting of a plurality of pins connected in parallel;

[0068] The fourth pin 17, the fifth pin 19, the power-on relay 23 and the sixth parallel pin group 22 are connected in series in sequence;

[0069] The output ends of the sixth parallel pin group 22 are respectively connected to the battery management component 2 , the display and control component 3 , and the motor controller.

[0070] Specifically, if Figure 3As shown, the fourth pin 17 and the fifth pin 19 are interface pins numbered J03 and J04 respectively, which are used to realize electrical connection and data transmission between devices; the power-on relay 23 is a device integrated with a KA-01 model relay, and the wake-up power is output through the power-on relay 23; multiple pins in the sixth parallel pin group 22, the D08 pin is a digital transmission pin, and its output end is connected to the battery management system, the output end of the B12 pin is connected to the display and control component, the E10 pin provides an all-in-one wake-up power, and provides the required low-voltage wake-up power for other motor components of the excavator, and the A06 pin is connected to the motor controller to provide low-voltage wake-up power for the motor controller. Only the above 4 pins are described here, but are not limited to the above 4 types. Corresponding pins can be added according to the needs of the excavator motor components.

[0071] In this embodiment, the wake-up power supply unit provides wake-up power to each low-voltage motor component of the excavator, so that the motor components in the dormant state are awakened and start working.

[0072] In some embodiments of the present invention, the wake-up power-on unit further includes: a second main fuse box 18 and a second low-voltage normal power fuse box 21;

[0073] One end of the second main fuse box 18 is connected to the fourth pin 17, and the other end is connected to the fifth pin 19;

[0074] One end of the second low-voltage normal power fuse box 21 is connected to the power-on relay 23 , and the other end is connected to the sixth parallel pin group 22 .

[0075] In this embodiment, the second main fuse box 18 is used to protect the wake-up power output from the fourth pin to prevent the wake-up power voltage from being too high. The second low-voltage normal power fuse box 21 is used to protect the voltage at the input end of the sixth parallel pin group 22.

[0076] In some embodiments of the present invention, the power-on relay is provided with a power supply pin 24, a main contact 25, a positive control line pin 26, and a negative control line pin 27:

[0077] One end of the power pin 24 is connected to the fifth pin 19, and the other end is selectively connected to one end of the main contact 25, and the other end of the main contact 25 is connected to the second low-voltage normal power fuse box 21;

[0078] The positive control line pin 26 is externally connected to the display control component 3;

[0079] The negative control line pin 27 is grounded.

[0080] Specifically, the power-on relay 23 is a device that integrates a KA-01 model relay. The power-on relay 23 is provided with a power pin 24 at position 30 and a main contact 25 at position 87, a positive control line pin 26 at position 86, a negative control line pin 27 at position 85, and an internal coil. The positive control line pin 26 is connected to the display and control component 3 through the D11 pin 20. The D11 pin 20 is a digital signal transmission pin, which is used to receive the power-on signal transmitted by the display and control component 3, input it to the positive control line pin 26, and after passing through the internal coil of the power-on relay 23, it is connected to the ground through the negative control line pin 27. The power-on relay 23 controls the power pin 24 and the main contact 25 switches to be turned on according to the power-on signal, and the positive electricity outputs the wake-up electricity through the KA-01 power-on relay.

[0081] In this embodiment, a power-on relay is used to provide wake-up power to each motor component of the excavator, so that the motor components in the dormant state are awakened and start working.

[0082] In order to illustrate the power-on control system of the present invention, the following are the specific implementation steps of the power-on control system:

[0083] When the low-voltage starting switch 9 is turned on, the display and control component 3 sends an ACC power-on signal to the power management component 1 through the CAN line 11, controlling the power-on relay 23 in the wake-up power-on unit 5 to be attracted. The wake-up power is output through the wake-up power-on unit 5 to wake up the motor components of the excavator. The display screen 8 in the display and control component 3 is lit, and the whole machine is successfully powered on. Then, the normal power supply unit 4 in the power management component 1 provides normal power to the awakened low-voltage components.

[0084] When the high-voltage starting switch 10 is turned on, the display and control component 3 sends an ACC power-on signal to the battery management component 2 through the CAN line 11. After receiving the high-voltage power-on command, the battery management component 2 controls the internal switch of the relay box 6 to be closed. The detection component 7 detects the total output voltage of the relay box 6. When the total output voltage reaches a preset value, the voltage is output to the motor controller;

[0085] When the relay box 6 starts working to output high voltage, the detection component 7 detects the output voltage of the relay box 6. When the output voltage of the relay box 6 reaches a preset threshold, the output voltage is controlled to be transmitted to the motor controller, and the voltage information is fed back to the display control component 3 through the CAN line 11. The display screen 8 displays the current input and output information of the relay box 6 according to the fed-back voltage information.

[0086] Based on the above-mentioned pure electric excavator power-on control system, the embodiment of the present utility model also provides a pure electric excavator vehicle accordingly. The above-mentioned pure electric excavator power-on control system is installed inside the vehicle, which can implement the technical solution described in the above-mentioned pure electric excavator power-on control system embodiment, which will not be repeated here.

[0087] The above is a detailed introduction to the pure electric excavator power-on control system provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A pure electric excavator power-on control system, characterized in that: include: Power management components, display control components and battery management components; The power management component, display control component and battery management component are connected to each other through CAN lines; The power management component is provided with a normal power-on unit and a wake-up power-on unit; the display and control component is provided with a low-voltage start switch, a high-voltage start switch and a control component; The input ends of the normal power-on unit and the wake-up power-on unit are externally connected to a low-voltage power supply, and the output ends are externally connected to various low-voltage motor components of the pure electric excavator; The low-voltage startup switch is connected to the input terminals of the wake-up power supply unit and the normal power supply unit through the control component, and is used to control the power management component to output the wake-up power and the normal power; The high-voltage starting switch is connected to the input end of the battery management component through the control component, and is used to control the battery management component to output high voltage electricity.

2. The pure electric excavator power-on control system according to claim 1, characterized in that: The battery management assembly includes a relay box and a detection component; The input end of the relay is connected to the high-voltage starting switch, and the output end is connected to the detection component.

3. The power-on control system for a pure electric excavator according to claim 1, characterized in that: The display and control component also includes a display screen; The display screen is connected to the detection component and is used to display power-on information.

4. The pure electric excavator power-on control system according to claim 1, characterized in that: It also includes a motor controller, which is connected to the output end of the battery management component and the output end of the power management component respectively.

5. The pure electric excavator power-on control system according to claim 4, characterized in that: The permanent power-on unit comprises: a first pin, a second pin and a third parallel pin group consisting of a plurality of pins connected in parallel; The first pin, the second pin and the third parallel pin are connected in series in sequence; The output ends of the third parallel pin group are respectively connected to the battery management component, the display and control component and the motor controller.

6. The pure electric excavator power-on control system according to claim 5, characterized in that: The permanent power supply unit further comprises: a first main fuse box and a first low-voltage permanent power fuse box; One end of the first main fuse box is connected to the first pin, and the other end is connected to the second pin; One end of the first low-voltage constant-current fuse box is connected to the second pin, and the other end is connected to the third parallel pin group.

7. The pure electric excavator power-on control system according to claim 6, characterized in that: The wake-up power-on unit includes: a fourth pin, a fifth pin, a power-on relay, and a sixth parallel pin group consisting of a plurality of pins connected in parallel; The fourth pin, the fifth pin, the power-on relay and the sixth parallel pin group are connected in series in sequence; The output ends of the sixth parallel pin group are respectively connected to the battery management component, the display and control component and the motor controller.

8. The power-on control system for a pure electric excavator according to claim 7, characterized in that: The wake-up power-on unit further includes: a second main fuse box and a second low-voltage normal power fuse box; One end of the second main fuse box is connected to the fourth pin, and the other end is connected to the fifth pin; One end of the second low-voltage normal power fuse box is connected to the power-on relay, and the other end is connected to the sixth parallel pin group.

9. The pure electric excavator power-on control system according to claim 7, characterized in that: The power-on relay is provided with a power supply pin, a main contact, a positive control line pin and a negative control line pin: One end of the power pin is connected to the fifth pin, and the other end is selectively connected to one end of the main contact, and the other end of the main contact is connected to the second low-voltage normal power fuse box; The positive control line pin is externally connected to a display and control component; The negative control line pin is grounded.

10. A pure electric excavator vehicle, characterized in that: The vehicle is provided with a pure electric excavator power-on control system, so that the vehicle can be powered on by the power-on control system according to any one of claims 1 to 9.

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