Mobile power supply device

Abstract

The utility model discloses a mobile power supply device, which belongs to the field of mobile power supply and solves the problem of insufficient endurance of engineering machinery in the prior art. The mobile vehicle mainly comprises a mobile vehicle body, the mobile vehicle body comprises a chassis, a battery pack group is arranged on the chassis, the battery pack group is electrically connected with a battery controller, the battery controller is electrically connected with a charging interface and an output interface, the output interface comprises a power supply circuit and a judgment circuit, and the judgment circuit comprises a connection relay. The switch-on relay controls voltage output of the power supply circuit. The system is provided with a battery control, cooling and charging system, so that the safe and stable operation of the battery pack is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to mobile power supply field, concretely, especially relates to a mobile power supply device. BACKGROUND

[0002] With the continuous improvement of environmental awareness, the emission standard of fuel engine is more and more strict, and due to the implementation of non-road machinery national V emission standard, excavators, loaders and other engineering machinery are gradually transformed to new energy electrification, and tow electric type and pure electric type are two main forms.

[0003] The pure electric type engineering machinery has relatively low battery system power due to the whole machine space and cost problem, so that the endurance of the whole machine cannot meet the user demand.

[0004] Therefore, it is urgent to provide a mobile power supply device for electric engineering machinery to solve the defects and deficiencies existing in the above-mentioned existing electric engineering machinery equipment, and to provide endurance power for the equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a mobile power supply device to solve the problem of insufficient endurance of engineering machinery in the prior art.

[0006] The utility model is realized through the following technical schemes:

[0007] A mobile power supply device, comprising a mobile vehicle body, the mobile vehicle body comprising a chassis, the chassis being provided with a battery pack group, the battery pack group being electrically connected with a battery controller, the battery controller being electrically connected with a charging interface and an output interface, the output interface comprising a power supply circuit and a judgment circuit, the judgment circuit comprising an on-off relay, the on-off relay controlling the voltage output of the power supply circuit. By setting the on-off relay to control the voltage output of the power supply circuit, and setting the matching terminal in the charging interface and the output interface, it is ensured that power supply only starts when the equipment is correctly docked, and the safety of use is improved.

[0008] Further, the charging interface and the output interface are provided with a matching terminal, and the matching terminal is electrically connected with the battery controller.

[0009] Further, the battery controller is connected with a water cooling unit, and the water cooling unit comprises a temperature sensor fixed on the battery pack group.

[0010] Further, the battery pack group is surrounded by a circulating refrigeration system, and the circulating refrigeration system is electrically connected with the battery controller. The device is not only equipped with a water cooling unit, but also is provided with a circulating refrigeration system, so that the battery pack group can be effectively cooled, performance decline or safety accidents caused by overheating are avoided, and the service life of the battery is prolonged.

[0011] Further, the battery controller is connected with a display screen, and the display screen is connected with the water cooling unit and the battery pack group, so that the working state of the water cooling unit and the parameters (such as voltage, current, temperature, etc.) of the battery pack group can be displayed in real time, and the user can timely understand the running condition of the device and make corresponding adjustment.

[0012] Further, the chassis is a wheeled chassis, and universal wheels and traveling wheels are arranged at the bottom of the chassis, so that the whole power supply device can be conveniently moved to different positions.

[0013] Compared with the prior art, the device has the following beneficial effects:

[0014] The device is provided with a control, cooling and charging system of the battery, so that the safe and stable operation of the battery pack is ensured; the device is provided with a water cooling unit and a circulating refrigeration system, so that the battery pack group can be effectively cooled, performance decline or safety accidents caused by overheating are avoided, and the service life of the battery is prolonged; the device is provided with an on-off relay to control the voltage output of the power supply circuit, and a matching terminal is arranged in the charging interface and the output interface, so that the device is ensured to start power supply only when the device is correctly connected, and the safety in use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the device Figure One ;

[0016] Figure 2 is a structural schematic diagram of the device Figure Two ;

[0017] Figure 3 is a circuit principle of the device Figure One ;

[0018] Figure 4 is a circuit principle of the device Figure Two ;

[0019] In the drawing: 1, output interface; 2, battery pack group; 3, battery controller; 4, water cooling unit; 5, chassis; 6, power switch; 7, charging interface; 8, display screen. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is a clear and complete description of the technical solution of the present invention in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional terms used are used to illustrate rather than limit the invention of the present invention.

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Example 1: A mobile power supply device, such as Figures 1-4 As shown, it includes a mobile body, which includes a chassis 5, on which is a battery pack 2, which is electrically connected to a battery controller 3. The battery pack 2 is the core energy storage component of the mobile power supply device and serves as a power source for the load. The battery controller 3 is a control unit for battery charging and discharging. It is electrically connected to the output interface 1, the water cooling unit 4, and the charging interface 7 via cables to achieve battery charging and discharging management. The output interface 1 includes a power supply circuit and a judgment circuit. The judgment circuit includes a connection relay that controls the voltage output of the power supply circuit. The output interface 1 is connected to the battery controller 3 via a cable and can be a standard plug of various forms such as European standards or national standards, which is plug-and-play. The mobile power supply device discharges the external load through this interface. The charging interface 7 is connected to the battery controller 3 via a cable and can be a standard socket of various forms such as European standards or national standards, which is plug-and-play. An external power source can charge the battery pack 2 through the charging interface 7. The battery controller 3 is electrically connected to a power switch 6. Specifically, the power switch 6 is electrically connected to the DC24V judgment circuit to achieve DC24V power on and off control. By setting up a connection relay to control the voltage output of the power supply circuit, and setting matching terminals in the charging interface 7 and the output interface 1, it is ensured that power supply is only started when the device is correctly docked, greatly improving the safety of use.

[0023] Embodiment 2, a mobile power supply device, the charging interface 7 and the output interface 1 are provided with matching terminals, the matching terminals are electrically connected with the battery controller 3, the battery controller 3 is connected with the water cooling unit 4, the water cooling unit 4 is connected with the battery controller 3 through a cable, and the water cooling unit 4 provides a thermal management system for the battery pack 2, controls the temperature of the battery pack 2 in a suitable range, and the water cooling unit 4 includes a temperature sensor fixed on the battery pack 2. The battery pack 2 is provided with a circulating refrigeration system, and the circulating refrigeration system is electrically connected with the battery controller 3. The circulating refrigeration system is a prior art and will not be described here. The device is not only provided with the water cooling unit 4, but also provided with the circulating refrigeration system, so that the battery pack 2 can be effectively cooled, the performance decline or safety accidents caused by overheating can be avoided, and the service life of the battery is prolonged. The battery controller 3 is connected with a display screen 8, the display screen 8 is connected with the battery controller 3, the water cooling unit 4 and the battery pack 2 through a CAN bus, receives and displays the regular information such as power and temperature of the system, can display the working state of the water cooling unit 4 and the parameters (such as voltage, current and temperature) of the battery pack 2 in real time, and the user can understand the running condition of the device in time and make corresponding adjustment. The chassis 5 is a wheeled trailer, the chassis 5 is provided with universal wheels and traveling wheels at the bottom, can be towed and moved by other vehicles, so that the whole power supply device can be conveniently moved to different positions. The other parts are the same as those of embodiment 1.

[0024] When the mobile power supply device works, the mobile chassis 5 needs to be connected with the powered equipment (the powered equipment can be a loader, a excavator or the like) mechanically, and the powered equipment can tow and move the mobile power supply device. At the same time, the output interface 1 of the mobile power supply device is connected with the charging socket of the powered equipment (the socket is a charging port of the equipment, and the charging gun of the charging pile is inserted to charge the equipment), and the electrical connection is completed.

[0025] The output interface 1 is divided into a low-voltage judgment circuit and a high-voltage power supply circuit, wherein the 1 and 2 pins of the low-voltage judgment circuit are CAN buses, and after being connected with the powered equipment, data communication can be established with the powered equipment to realize control of the power supply state. The 8 and 9 pins of the low-voltage judgment circuit are connection signals, and after the two pins are connected, the coil of the relay is connected, the connection state of the direct-current output port is detected, and if the connection is disconnected, the high-voltage output is disconnected to ensure safety.

[0026] The display screen 8 is installed on the right side of the mobile power supply device, communicates with the battery system through the CAN bus, and realizes display and alarm of the battery power, temperature, fault and the like.

[0027] The mobile power supply device is provided with a battery control, cooling and charging system, and the charging and discharging mode switching of the battery pack is realized by opening and closing of the main relay of the battery controller 3; the water cooling unit 4 collects the temperature information of the battery pack, and adjusts the circulating refrigerant temperature around the battery pack according to the temperature of the battery pack, so as to control the temperature of the battery pack within a reasonable range and ensure the safe and stable operation of the battery pack.

[0028] The output interface 1 and the charging interface 7 are DC interfaces, and matching terminals are arranged in the output interface 1 and the charging interface 7, and only when the terminals are successfully matched, the battery controller 3 detects the correct matching signal, and then controls the main collector to be closed, so as to realize the charging and discharging. Figure 3 and Figure 4 As shown in the wiring diagram of the system, the electrical connection relationship of all the components is included, and the information not described in the technical scheme can be referred to Figure 2 .

[0029] The above has made a detailed description of the utility model, the above is only the preferred embodiment of the utility model, and cannot limit the utility model implementation range, that is, all equivalent changes and modifications made within the scope of the application should still belong to the scope covered by the utility model.

Claims

1. A mobile power supply device, comprising a mobile vehicle body, characterized in that: The mobile vehicle body comprises a chassis (5), a battery pack (2) is provided on the chassis (5), the battery pack (2) is electrically connected to a battery controller (3), the battery controller (3) is electrically connected to a charging interface (7) and an output interface (1), the output interface (1) comprises a power supply circuit and a judgment circuit, the judgment circuit comprises a connection relay, and the connection relay controls the voltage output of the power supply circuit.

2. The mobile power supply device according to claim 1, wherein: The charging interface (7) and the output interface (1) are provided with matching terminals, and the matching terminals are electrically connected to the battery controller (3).

3. The mobile power supply device according to claim 1, wherein: The battery controller (3) is connected to a water cooling unit (4), and the water cooling unit (4) includes a temperature sensor, which is fixed on the battery pack (2).

4. The mobile power supply device according to claim 1, wherein: A circulating refrigeration system is provided around the battery pack (2), and the circulating refrigeration system is electrically connected to the battery controller (3).

5. The mobile power supply device according to claim 1, wherein: The battery controller (3) is connected to a display screen (8), and the display screen (8) is connected to a water cooling unit (4) and a battery pack (2).

6. The mobile power supply device according to claim 1, wherein: The chassis (5) is a wheeled tractor, and a universal wheel and a running wheel are provided at the bottom of the chassis (5).

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