Power supply device and engineering mechanical equipment

Abstract

The utility model relates to a power supply device and engineering machinery equipment, and belongs to the technical field of circuit power supply system logic switching. The BMS is electrically connected with the first switch and used for generating a first control signal and transmitting the first control signal to the first switch after responding to the first operation instruction, and the first control signal is used for indicating the first switch to be connected or disconnected; the rectifier is electrically connected with an external electric appliance through the second switch; the control unit is electrically connected with the second switch and used for generating a second control signal and transmitting the second control signal to the second switch after responding to the second operation instruction, and the second control signal is used for indicating closing or opening of the second switch. According to the utility model, the technical purpose of maintaining the normal operation of the internal devices of the engineering mechanical equipment when the engineering mechanical equipment is transferred and moved is effectively realized.

Description

Technical Field

[0001] This utility model relates to the field of logic switching technology for circuit power supply systems, and in particular to a power supply device and engineering machinery equipment. Background Technology

[0002] In the construction machinery industry, with increasing environmental protection requirements and the development of new energy technologies, "oil-to-electricity" conversion has become an important technological trend. "Oil-to-electricity" refers to converting traditional diesel or gasoline-powered construction machinery into electric-powered equipment.

[0003] Currently, most oil-fired engineering machinery on the market undergoes electric conversion using an electric drive system. This conversion involves replacing the power system of traditional fuel-powered engineering machinery with an electric drive system, enabling it to operate electrically powered by an external power source.

[0004] However, existing oil-to-electric engineering machinery equipment, after undergoing electric-powered conversion, suffers from a single power supply mode, making it unable to maintain the normal operation of internal devices in scenarios requiring relocation. Utility Model Content

[0005] In view of this, it is necessary to provide a power supply device and engineering machinery equipment to achieve the technical objective of maintaining the normal operation of its internal devices when the engineering machinery equipment is moved to a new location.

[0006] To achieve the above-mentioned technical objectives, in a first aspect, the present invention provides a power supply device, comprising:

[0007] The battery is electrically connected to an external electrical appliance via the first switch.

[0008] The BMS is electrically connected to the first switch and is used to generate a first control signal and transmit it to the first switch after responding to the first operation command. The first control signal is used to indicate whether the first switch is engaged or disengaged.

[0009] The rectifier has its input terminal electrically connected to an external AC power supply, and its output terminal electrically connected to an external electrical appliance via a second switch.

[0010] The control unit, electrically connected to the second switch, is used to generate a second control signal in response to a second operation command and transmit it to the second switch. The second control signal is used to indicate whether the second switch is engaged or disengaged.

[0011] In some embodiments of this utility model, the power supply device further includes:

[0012] The temperature control module is communicatively connected to the BMS and fixedly connected to the battery, and is used for heat dissipation and heating.

[0013] The BMS is also used to monitor the temperature of the battery, and when the temperature is lower than a preset low temperature threshold, it generates a third control signal and transmits it to the temperature control module. When the temperature is higher than a preset high temperature threshold, it generates a fourth control signal and transmits it to the temperature control module. The third control signal is used to instruct the temperature control module to heat up, and the fourth control signal is used to instruct the temperature control module to dissipate heat.

[0014] In some embodiments of this utility model, the control unit is also used to monitor the voltage and current input to the rectifier;

[0015] The power supply device also includes:

[0016] The safety protection module is communicatively connected to the BMS and electrically connected to the second switch. It is used to receive the voltage and current, and generate a second control signal and transmit it to the second switch when the voltage and / or current is greater than a preset threshold.

[0017] In some embodiments of this utility model, the power supply device further includes: a power distribution unit, a main drive MCU, an air conditioning compressor, a brake air pump, a PTC, and a DC / DC unit.

[0018] The output terminal of the power distribution unit includes several switches, which are electrically connected to the main drive MCU, the air conditioning compressor, the brake air pump, the PTC and the DC / DC unit respectively. The power distribution unit is used to turn on at least one of the switches after responding to the fifth operation command.

[0019] In some embodiments of this utility model, a pre-charging unit is provided at the input end of the power distribution unit;

[0020] The pre-charging element is used to pre-charge the power supply unit based on the electrical energy input from the power supply device to the power distribution unit, so as to stabilize the voltage and current.

[0021] In some embodiments of this utility model, the power supply device further includes:

[0022] The display is communicatively connected to the BMS and control unit;

[0023] The button panel communicates with the BMS and control unit via the display.

[0024] The display and button panel are both used to generate a first operation command, a third operation command, and a fourth operation command and transmit them to the BMS, and / or generate a second operation command and transmit it to the control unit, and / or generate a fifth operation command and transmit it to the power distribution unit.

[0025] The third operation instruction is used to instruct the BMS to generate a third control signal, and the fourth operation instruction is used to instruct the BMS to generate a fourth control signal.

[0026] The display is also used to receive and display the temperature, voltage, and current.

[0027] In some embodiments of this utility model, the power supply device further includes:

[0028] An AC charger is used to convert AC power input from an external power source into DC power in response to the sixth operation command.

[0029] The battery is electrically connected to the AC charger and is used to charge according to the DC power.

[0030] In some embodiments of this utility model, the power supply device further includes:

[0031] The power management module is communicatively connected to the BMS, control unit, and AC charger.

[0032] The control unit is also used to monitor whether the rectifier has an external AC power input and transmit the monitoring result to the power management module; the BMS is also used to monitor whether the battery is in a discharging state and transmit the monitoring result to the power management module.

[0033] The power management module is used to generate a first operation command to instruct the first switch to be engaged and transmit it to the BMS when the control unit detects that the rectifier has no external AC power input, and to generate a second operation command to instruct the second switch to be disengaged and transmit it to the control unit.

[0034] The power management module is also used to generate a first operation command to indicate that the first switch is open and transmit it to the BMS, a second operation command to indicate that the second switch is closed and transmit it to the control unit, and generate a sixth operation command to transmit it to the AC charger when the control unit detects that the rectifier has an external AC power input.

[0035] Secondly, this utility model provides an engineering machinery equipment, comprising:

[0036] Several loads and the power supply device described in any of the above-mentioned device items.

[0037] In some embodiments of this utility model, the load includes at least:

[0038] The working motor is electrically connected to the main drive MCU.

[0039] Air conditioner, electrically connected to the air conditioner compressor;

[0040] The braking system is electrically connected to the brake air pump;

[0041] The heating system is electrically connected to the PTC.

[0042] The battery is electrically connected to the DC / DC unit.

[0043] The battery is electrically connected to an external electrical appliance via the first switch.

[0044] The BMS is electrically connected to the first switch and is used to generate a first control signal and transmit it to the first switch after responding to the first operation command. The first control signal is used to indicate whether the first switch is engaged or disengaged.

[0045] The rectifier is electrically connected to an external electrical appliance via a second switch.

[0046] The control unit, electrically connected to the second switch, is used to generate a second control signal in response to a second operation command and transmit it to the second switch. The second control signal is used to indicate whether the second switch is engaged or disengaged.

[0047] The beneficial effects of this utility model are as follows: This utility model provides a power supply device, including a rectifier that implements a power-carrying mode and a battery that implements a battery power supply mode. The rectifier and the battery are connected to an external electrical appliance through different switches, and these different switches are controlled to close and open by a control unit and a BMS respectively. During implementation, it is only necessary to send operation commands to the control unit and the BMS to set the power supply device to operate in either a power-carrying mode or a battery power supply mode, thereby effectively achieving the technical objective of maintaining the normal operation of the internal devices of engineering machinery equipment during relocation. Attached Figure Description

[0048] Figure 1 A schematic diagram of the structure of an embodiment of the power supply device provided by this utility model;

[0049] Figure 2 A schematic diagram of an embodiment of the engineering machinery equipment provided by this utility model. Detailed Implementation

[0050] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0052] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0053] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0054] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0055] like Figure 1 As shown, a specific embodiment of this utility model discloses a power supply device 10, comprising:

[0056] Battery 101 is electrically connected to an external electrical appliance via first switch 102;

[0057] BMS103 is electrically connected to the first switch 102 and is used to generate a first control signal and transmit it to the first switch 102 after responding to the first operation command. The first control signal is used to indicate whether the first switch 102 is engaged or disengaged.

[0058] The rectifier 104 has its input terminal electrically connected to an external AC power supply, and its output terminal electrically connected to an external electrical appliance via a second switch 105.

[0059] The control unit 106 is electrically connected to the second switch 105 and is used to generate a second control signal in response to a second operation command and transmit it to the second switch 105. The second control signal is used to indicate whether the second switch 105 is engaged or disengaged.

[0060] Preferably, both the first switch and the second switch can be relays.

[0061] Compared with the prior art, the power supply device provided by this utility model includes a rectifier for implementing a power-carrying mode and a battery for implementing a battery power supply mode. The rectifier and the battery are connected to the same electrical appliance through different switches, and these different switches are controlled to close and open by the control unit and the BMS respectively. During the implementation process, it is only necessary to send operation commands to the control unit and the BMS to set the power supply device to provide power in either power-carrying or battery power mode, thereby effectively realizing the technical objective of freely switching between power-carrying and battery-powered whole-machine modification schemes during site relocation.

[0062] To ensure the health of the battery when the power supply device 10 is powered by the battery, in some embodiments of this utility model, the power supply device 10 further includes:

[0063] The temperature control module 107 is communicatively connected to the BMS 103 and fixedly connected to the battery 101, and is used for heat dissipation and heating.

[0064] BMS103 is also used to monitor the temperature of battery 101, and generates a third control signal and transmits it to temperature control module 107 when the temperature is lower than a preset low temperature threshold, and generates a fourth control signal and transmits it to temperature control module 107 when the temperature is higher than a preset high temperature threshold. The third control signal is used to instruct temperature control module 107 to heat up, and the fourth control signal is used to instruct temperature control module 107 to dissipate heat.

[0065] Preferably, the temperature control module 107 can be a heating element and a heat sink.

[0066] Similarly, to ensure the safety of the power supply device itself when it is powered by a power-carrying method, in some embodiments of this utility model, the control unit 106 is also used to monitor the voltage and current input to the rectifier 104.

[0067] The power supply device 10 also includes:

[0068] The safety protection module 108 is communicatively connected to the control unit 106 and electrically connected to the second switch 105. It is used to receive voltage and current, and generate a second control signal and transmit it to the second switch 105 when the voltage and / or current is greater than a preset threshold.

[0069] Furthermore, in order to enable the power supply device 10 to be applied to various power supply scenarios, the present invention has also extended the power supply device 10.

[0070] Specifically, in some embodiments of the present invention, the power supply device 10 further includes: a power distribution unit 109, a main drive MCU 110, an air conditioning compressor 111, a brake air pump 112, a PTC 113, and a DC / DC unit 114.

[0071] The output of the power distribution unit 109 includes several switches, which are electrically connected to the main drive MCU 110, the air conditioning compressor 111, the brake air pump 112, the PTC 113 and the DC / DC unit 114 respectively. The power distribution unit 109 is used to turn on at least one of the switches after responding to the fifth operation command.

[0072] Furthermore, considering that high-voltage components in industrial machinery systems typically contain large-capacity capacitors, directly connecting them to high voltage upon power-up would be equivalent to a short circuit, generating extremely high current and potentially causing problems such as contact point burnout and relay sticking. In some embodiments of this invention, the input terminal of the power distribution unit 109 is equipped with a pre-charge unit.

[0073] The pre-charging element is used to pre-charge the power supplied by the power supply device 10 to the power distribution unit 109 to stabilize the voltage and current.

[0074] Specifically, the pre-charge unit limits the current by connecting a pre-charge resistor in series in the charging circuit, allowing the capacitor to charge slowly, thus avoiding these problems and protecting the circuit and battery.

[0075] To further enhance the convenience of the power supply device 10 and enable it to be remotely controlled, in some embodiments of this utility model, the power supply device 10 further includes:

[0076] Display 115 is communicatively connected to BMS 103 and control unit 106;

[0077] The button panel 116 is communicatively connected to the BMS 103 and the control unit 106 via the display 115;

[0078] The display 115 and the button panel 116 are both used to generate a first operation command, a third operation command, and a fourth operation command and transmit them to the BMS 103, and / or generate a second operation command and transmit it to the control unit 106, and / or generate a fifth operation command and transmit it to the power distribution unit 109.

[0079] The third operation instruction is used to instruct BMS103 to generate a third control signal, and the fourth operation instruction is used to instruct BMS103 to generate a fourth control signal.

[0080] The display 115 is also used to receive and display temperature, voltage, and current.

[0081] Specifically, the monitor's UI interface can be equipped with a display module for displaying data and an interaction module for user interaction to generate all the aforementioned operation commands.

[0082] Similarly, the button panel can also be equipped with multiple buttons for generating the different operation commands mentioned above. In this way, users can switch the power supply mode either through screen touch operation or through button touch operation.

[0083] In some embodiments of this utility model, the power supply device 10 further includes:

[0084] AC charger 117 is used to convert AC power input from an external power source into DC power after responding to the sixth operation command;

[0085] Battery 101 is electrically connected to AC charger 117 for charging according to DC power.

[0086] It should be noted that while the power supply device 10 is supplying power in a power-carrying mode, the user can start the AC charger 117 to receive AC power and convert it into DC power before outputting it to the battery 101. This effectively improves the energy efficiency of the power supply device 10.

[0087] Based on the manual control power supply device 10 provided in the above embodiments, in order to further realize the automated control of the power supply device 10, in some embodiments of this utility model, the power supply device 10 further includes:

[0088] The power management module 118 is communicatively connected to the BMS 103, the control unit 106, and the AC charger 117.

[0089] The control unit 106 is also used to monitor whether the rectifier 104 has an external AC power input and transmit the monitoring result to the power management module 118. The BMS 103 is also used to monitor whether the battery 101 is in a discharging state and transmit the monitoring result to the power management module 118.

[0090] The power management module 118 is used to generate a first operation command to instruct the first switch 102 to be engaged and transmit it to the BMS 103 when the control unit 106 detects that the rectifier 104 has no external AC power input, and to generate a second operation command to instruct the second switch 105 to be disengaged and transmit it to the control unit 106.

[0091] The power management module 118 is also used to generate a first operation command to indicate that the first switch 102 is disconnected and transmit it to the BMS 103, a second operation command to indicate that the second switch 105 is engaged and transmit it to the control unit 106, and generate a sixth operation command to transmit it to the AC charger 117 when the control unit 106 detects that the rectifier 104 has an external AC power input.

[0092] like Figure 2 Secondly, this utility model provides an engineering machinery equipment 20, comprising:

[0093] Several loads 210 and the power supply device 10 described in any of the above-mentioned device items.

[0094] It should be noted that construction machinery equipment 20 can be an excavator or other large construction machinery.

[0095] In some embodiments of this utility model, the load 210 includes at least:

[0096] The working motor 2101 is electrically connected to the main drive MCU110;

[0097] Air conditioner 2102 is electrically connected to air conditioner compressor 111;

[0098] The braking system 2103 is electrically connected to the brake air pump 112;

[0099] Heating system 2104 is electrically connected to PTC113;

[0100] Battery 2105 is electrically connected to DC / DC unit 114.

[0101] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power supply device, characterized in that, include: The battery is electrically connected to an external electrical appliance via the first switch. The BMS is electrically connected to the first switch and is used to generate a first control signal and transmit it to the first switch after responding to the first operation command. The first control signal is used to indicate whether the first switch is engaged or disengaged. The rectifier has its input terminal electrically connected to an external AC power supply, and its output terminal electrically connected to an external electrical appliance via a second switch. The control unit, electrically connected to the second switch, is used to generate a second control signal in response to a second operation command and transmit it to the second switch. The second control signal is used to indicate whether the second switch is engaged or disengaged.

2. The power supply device according to claim 1, characterized in that, The power supply device also includes: The temperature control module is communicatively connected to the BMS and fixedly connected to the battery, and is used for heat dissipation and heating. The BMS is also used to monitor the temperature of the battery, and when the temperature is lower than a preset low temperature threshold, it generates a third control signal and transmits it to the temperature control module. When the temperature is higher than a preset high temperature threshold, it generates a fourth control signal and transmits it to the temperature control module. The third control signal is used to instruct the temperature control module to heat up, and the fourth control signal is used to instruct the temperature control module to dissipate heat.

3. The power supply device according to claim 1, characterized in that, The control unit is also used to monitor the voltage and current input to the rectifier; The power supply device also includes: The safety protection module is communicatively connected to the BMS and electrically connected to the second switch. It is used to receive the voltage and current, and generate a second control signal and transmit it to the second switch when the voltage and / or current is greater than a preset threshold.

4. The power supply device according to claim 1, characterized in that, The power supply device also includes: a power distribution unit, a main drive MCU, an air conditioning compressor, a brake air pump, a PTC, and a DC / DC unit. The output terminal of the power distribution unit includes several switches, which are electrically connected to the main drive MCU, the air conditioning compressor, the brake air pump, the PTC and the DC / DC unit respectively. The power distribution unit is used to turn on at least one of the switches after responding to the fifth operation command.

5. The power supply device according to claim 4, characterized in that, The power distribution unit is equipped with a pre-charge unit at its input terminal; The pre-charging unit is used to pre-charge the power according to the electrical energy input from the power supply device to the power distribution unit, so as to stabilize the voltage and current.

6. The power supply device according to claim 4, characterized in that, The power supply device also includes: The display is communicatively connected to the BMS and control unit; The button panel communicates with the BMS and control unit via the display. The display and button panel are both used to generate a first operation command, a third operation command, and a fourth operation command and transmit them to the BMS, and / or generate a second operation command and transmit it to the control unit, and / or generate a fifth operation command and transmit it to the power distribution unit. The third operation instruction is used to instruct the BMS to generate a third control signal, and the fourth operation instruction is used to instruct the BMS to generate a fourth control signal. The display is also used to receive and display temperature, voltage, and current.

7. The power supply device according to claim 1, characterized in that, The power supply device also includes: An AC charger is used to convert AC power input from an external power source into DC power after responding to the sixth operation command. The battery is electrically connected to the AC charger and is used to charge according to the DC power.

8. The power supply device according to claim 3 or 7, characterized in that, The power supply device also includes: The power management module is communicatively connected to the BMS, control unit, and AC charger. The control unit is also used to monitor whether the rectifier has an external AC power input and transmit the monitoring result to the power management module; the BMS is also used to monitor whether the battery is in a discharging state and transmit the monitoring result to the power management module. The power management module is used to generate a first operation command to instruct the first switch to be engaged and transmit it to the BMS when the control unit detects that the rectifier has no external AC power input, and to generate a second operation command to instruct the second switch to be disengaged and transmit it to the control unit. The power management module is also used to generate a first operation command to indicate that the first switch is open and transmit it to the BMS, a second operation command to indicate that the second switch is closed and transmit it to the control unit, and generate a sixth operation command to transmit it to the AC charger when the control unit detects that the rectifier has an external AC power input.

9. An engineering machinery equipment, characterized in that, include: Several loads and a power supply device as described in any one of claims 1-8.

10. The engineering machinery equipment according to claim 9, characterized in that, The load includes at least: The working motor is electrically connected to the main drive MCU; Air conditioner, electrically connected to the air conditioner compressor; The braking system is electrically connected to the brake air pump; The heating system is electrically connected to the PTC. The battery is electrically connected to the DC / DC unit.

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