Double-source power excavator system

Abstract

The invention discloses a double-source power excavator system, and belongs to the technical field of electric engineering machinery. Comprising a vehicle-mounted power battery and a mobile power supply vehicle, the mobile power supply vehicle comprises a first power battery and a second power battery, the first power battery and the second power battery are connected with a high-voltage box, the high-voltage box is connected with a high-voltage box BDU through a cable connecting device, the vehicle-mounted power battery is connected with the high-voltage box BDU, and the high-voltage box BDU is connected with a second motor. Double-source power supply is achieved through the vehicle-mounted power battery and the mobile power supply vehicle, dependence of line network power supply can be eliminated, when no mobile power supply vehicle exists, the vehicle-mounted power battery can move so as to be connected with other power supply equipment, vehicle transfer or short-time work can be achieved without an external power source, and the system is simple in structure and convenient to use. It is avoided that an external cable is needed in the transferring process of equipment, the wire harness transferring abrasion degree is reduced, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric construction machinery, and specifically relates to a dual-source power excavator system. Background Art

[0002] The mining machinery field is an important part of the development of the mining industry. Among them, electric excavators, as one of the main mining machinery equipment, have received extensive attention due to their advantages such as high efficiency and environmental protection. The electric power engineering field is the general term for the work of power system planning, design, construction, operation, maintenance, and management, covering all aspects of power production, transmission, and use. The new energy technology field refers to the scientific and technological field that utilizes renewable energy and clean energy to achieve the goal of sustainable development.

[0003] Existing electric excavators are usually connected to a power supply vehicle through tow cables, and the power supply vehicle provides the power source. Although this method can ensure the normal operation of the electric excavator, there are still some problems. First, this method relies on grid power supply. If the grid capacity is insufficient, grid transformation is required, which not only increases the cost but also prolongs the transformation period. Second, this method limits the mobility and adaptability of the electric excavator because the cables need to be continuously connected and disconnected. In addition, existing electric excavators cannot continue to work after disconnecting from the power supply vehicle, which limits their usage scenarios and flexibility. Therefore, the existing electric excavator technology has certain limitations in practical applications and needs further improvement. Summary of the Invention

[0004] 1. Technical Problems to be Solved by the Invention

[0005] The purpose of the present invention is to solve the problem that existing electric excavators rely on the grid for power supply and have a single power supply mode.

[0006] 2. Technical Solutions

[0007] To achieve the above object, the technical solution provided by the present invention is as follows:

[0008] A dual-source power excavator system of the present invention includes an on-vehicle power battery and a mobile power supply vehicle. The mobile power supply vehicle includes a first power battery and a second power battery. The first power battery and the second power battery are connected to a high-voltage box. The high-voltage box is connected to a high-voltage box BDU through a cable connection device. The on-vehicle power battery is connected to the high-voltage box BDU, and the high-voltage box BDU is connected to a second motor.

[0009] Preferably, the first power battery is connected to a first charging socket and a first thermal management unit, and the second power battery is connected to a second charging socket and a second thermal management unit.

[0010] Preferably, the cable connection device is connected to the high-voltage box BDU via a reel or a slip ring.

[0011] Preferably, the reel is connected to the high-voltage box BDU via DCDC 1, and the slip ring is connected to the high-voltage box BDU via DCDC 2.

[0012] Preferably, the high-voltage box BDU is connected to the second motor through the second motor controller.

[0013] Preferably, the high-voltage box BDU is further connected to an all-in-one controller, which includes a motor controller 1, a high-voltage box PDU and a DCDC 3.

[0014] Preferably, the motor controller 1 is connected to the motor 1, the DCDC 3 is connected to the battery, and the high-voltage box PDU is connected to the compressor AC and the electric heating PTC.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] A dual-source power excavator system according to the present invention includes an on-board power battery and a mobile power supply vehicle. The mobile power supply vehicle includes power battery 1 and power battery 2. The power battery 1 and power battery 2 are connected to a high-voltage box, which is connected to a high-voltage box BDU via a cable connection device. The on-board power battery is connected to the high-voltage box BDU, and the high-voltage box BDU is connected to motor 2. By providing dual power sources through the on-board power battery and the mobile power supply vehicle, dependence on power supply from a wired network can be eliminated. When there is no mobile power supply vehicle, the on-board power battery can be used for movement to connect to other power supply equipment. The vehicle can be transferred or operated for short periods of time without an external power supply, avoiding the need for external cables during the transfer process, reducing the degree of wear on the wiring harness during transfer, and improving the life of the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the overall structure of a dual-source power excavator system of the present invention.

[0019] Explanation of the numbers in the schematic diagram:

[0020] 110. Thermal management unit 1; 120. Thermal management unit 2; 130. Charging socket 1; 140. Power battery 1; 150. Charging socket 2; 160. Power battery 2; 170. High-voltage box; 180. Cable connection device;

[0021] 211. Reel; 212. Collector ring; 221. DCDC 1; 222. DCDC 2; 231. Motor 1; 232. Motor 2; 241. Motor controller 2; 250. High-voltage box BDU; 251. Thermal management unit 3; 260. On-board power battery; 270. All-in-one controller; 271. Motor controller 1; 272. High-voltage box PDU; 273. DCDC 3; 281. Battery; 282. Compressor AC; 283. Electric heating PTC. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0025] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0026] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Example 1

[0029] Refer to the attached Figure 1 A dual-source power excavator system according to this embodiment includes an on-board power battery 160 and a mobile power supply vehicle. The mobile power supply vehicle includes power battery 140 and power battery 2 160. The power battery 140 and power battery 2 160 are connected to a high-voltage box 170. The high-voltage box 170 is connected to a high-voltage box BDU 250 via a cable connection device 180. The on-board power battery 160 is connected to the high-voltage box BDU 250, which is connected to motor 2 232. The dual-source power excavator system according to this embodiment, which provides dual power through the on-board power battery 160 and the mobile power supply vehicle, can eliminate dependence on power grid power. When a mobile power supply vehicle is not available, the on-board power battery 160 can be used for mobility to connect to other power supply equipment. This allows for vehicle transfer or short-term operation without an external power source, eliminating the need for external cables during equipment transfer, reducing wear on the wiring harness during transfer, and improving cable life.

[0030] The power battery 140 is connected to the charging socket 130 and the thermal management unit 110, while the power battery 2 160 is connected to the charging socket 2 150 and the thermal management unit 2 120. The cable connection device 180 is connected to the high-voltage unit BDU 250 via a reel 211 or a slip ring 212. The reel 211 is connected to the high-voltage unit BDU 250 via a DC-DC converter 221, while the slip ring 212 is connected to the high-voltage unit BDU 250 via a DC-DC converter 222.

[0031] The high voltage box BDU 250 is connected to the second motor 232 via the second motor controller 241 .

[0032] The high voltage box BDU 250 is further connected to an all-in-one controller 270 , which includes a motor controller 1 271 , a high voltage box PDU 272 and a DCDC 3 273 .

[0033] The motor controller 1 271 is connected to the motor 1 231, the DCDC 3 273 is connected to the battery 281, and the high-voltage box PDU 272 is connected to the compressor AC 282 and the electric heater PTC 283.

[0034] The above embodiments only represent a certain implementation manner of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A dual-source power excavator system, characterized in that: The invention comprises a vehicle-mounted power battery (160) and a mobile power vehicle, wherein the mobile power vehicle comprises a first power battery (140) and a second power battery (160), wherein the first power battery (140) and the second power battery (160) are connected to a high-voltage box (170), wherein the high-voltage box (170) is connected to a high-voltage box BDU (250) via a cable connection device (180), wherein the vehicle-mounted power battery (160) is connected to the high-voltage box BDU (250), and the high-voltage box BDU (250) is connected to a second motor (232).

2. The dual-source power excavator system according to claim 1, wherein: The power battery 1 (140) is connected to the charging socket 1 (130) and the thermal management unit 1 (110), and the power battery 2 (160) is connected to the charging socket 2 (150) and the thermal management unit 2 (120).

3. The dual-source power excavator system according to claim 1, wherein: The cable connection device (180) is connected to the high-voltage box BDU (250) via a reel (211) or a collector ring (212).

4. The dual-source power excavator system according to claim 3, characterized in that: The reel (211) is connected to the high-voltage box BDU (250) via DCDC 1 (221), and the collector ring (212) is connected to the high-voltage box BDU (250) via DCDC 2 (222).

5. A dual-source power excavator system according to claim 1, characterized in that: The high-voltage box BDU (250) is connected to the second motor (232) via the second motor controller (241).

6. A dual-source power excavator system according to claim 1, characterized in that: The high-voltage box BDU (250) is also connected to an all-in-one controller (270), and the all-in-one controller (270) includes a motor controller 1 (271), a high-voltage box PDU (272) and a DCDC 3 (273).

7. A dual-source power excavator system according to claim 6, characterized in that: The motor controller 1 (271) is connected to the motor 1 (231), the DCDC 3 (273) is connected to the battery (281), and the high-voltage box PDU (272) is connected to the compressor AC (282) and the electric heating PTC (283).

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