OBC and DCDC aging device with energy recovery function and aging method

Abstract

The invention relates to an OBC and DCDC aging device with an energy recovery function and an aging method. The OBC and DCDC aging device comprises a computer, a communication unit, an electric quantity loss compensation power supply, a low-voltage DC auxiliary power supply, an anti-backflow diode D1, an anti-backflow diode D2, a first OBC, a second OBC, a first DCDC, a second DCDC, a first inverter and a second inverter. According to the OBC and DCDC aging device with the energy recovery function and the aging method provided by the invention, electric energy is recovered and reused, so that the effects of energy conservation and environmental protection are realized, and energy waste is avoided; meanwhile, the number of refrigerating and cooling equipment in the burn-in room is greatly reduced, waste of equipment resources is avoided, and the manufacturing cost of the burn-in room is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to an OBC and DCDC aging device and an aging method with energy recovery functions. Background Art

[0002] OBC is the abbreviation of On-board charger, which means on-board charger. DCDC is the abbreviation of Direct Current-Direct Current Converter, which means a device that can convert a DC input voltage (or current) into another level of DC output voltage (or current). PC is the abbreviation of Personal Computer, which means personal computer. OBC DCDC is the small three electrics of new energy vehicles (on-board charger OBC, DC / DC converter, high-voltage distribution box PDU). The on-board charger (OBC) can realize the high-voltage battery charging function of new energy vehicles. The DC / DC converter (DC-DC converter) draws power from the power battery to charge the on-board 12V or 24V low-voltage battery or provide power to other on-board electronic accessories.

[0003] During the OBC DCDC production process, manufacturers will perform aging treatment on the products after assembly and basic functional testing to expose defective parts produced during the production process in advance and avoid the risk of defective parts flowing out. This product aging process requires a product aging device.

[0004] In traditional aging devices, the aging load is generally a resistor load. This load mode is easy to implement and control, and most of them adopt this mode. The disadvantage of this load mode is that the electric energy converted during the OBC and DCDC aging process is completely converted into useless heat energy by the load resistor, resulting in a waste of electric energy. At the same time, the aging room must also add refrigeration and cooling equipment of the same wattage to offset the heat energy generated by the load resistor to balance the temperature in the aging room. This will cause a lot of waste of electric energy and equipment resources. Summary of the invention

[0005] The present invention aims to solve the problem of energy waste and equipment resource waste caused by the use of resistive loads in existing aging devices. The technical solution adopted is: an OBC and DCDC aging device with energy recovery function, including: a computer, a communication unit, an electric power loss compensation power supply, a low-voltage DC auxiliary power supply, an anti-backflow diode D1, an anti-backflow diode D2, a first OBC, a second OBC, a first DCDC, a second DCDC, a first inverter and a second inverter, the computer is connected to the communication unit, and the communication unit is connected to the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter, The second inverter, the power loss compensation power supply is connected to the first OBC, the second OBC, the first DCDC, and the second DCDC, the low-voltage DC auxiliary power supply is connected to the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter, and the second inverter, the anti-backflow diode D1 is connected to the positive electrode of the power loss compensation power supply, the anti-backflow diode D2 is connected to the positive electrode of the first OBC, the positive electrode of the first OBC is connected to the ammeter A1, the positive electrode of the second OBC is connected to the ammeter A2, the positive electrode of the first DCDC is connected to the ammeter A3, and the positive electrode of the second DCDC is connected to the ammeter A4.

[0006] Further improvement is that the positive terminal of the power loss compensation power supply output is connected to the positive terminal of the anti-backflow diode D1, the negative terminal of the anti-backflow diode D1 is respectively connected to the negative terminal of the anti-backflow diode D2 and the positive terminals of ammeters A2, A3, and A4, the positive terminal of the anti-backflow diode D2 is connected to the negative terminal of ammeter A1, the positive terminal of ammeter A1 is connected to the positive terminal of the first OBC, the negative terminal of the power loss compensation power supply is respectively connected to the negative terminals of the first OBC, the second OBC, the first DCDC, and the second DCDC, the AC output terminal of the second OBC is connected to the AC input terminal of the first OBC, and the low-voltage DC output terminal of the first DCDC is connected to The low-voltage input end of the first inverter is connected, the low-voltage DC output end of the second DCDC is connected to the low-voltage input end of the second inverter, the L / N lines of the first inverter and the second inverter are respectively connected to the 220VAC input end L / N lines of the power loss compensation power supply, the output of the low-voltage DC auxiliary power supply is connected to the positive and negative polarities of the auxiliary control current of the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter, and the second inverter, and the communication unit is respectively connected to the CAN transceiver ports of the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter, and the second inverter.

[0007] A further improvement is that both the first OBC and the second OBC are bidirectional OBCs.

[0008] The present invention also provides an aging method for an OBC or DCDC aging device with energy recovery function using any one of the above, comprising the following steps:

[0009] Turn on the aging device;

[0010] After starting up, the device enters the aging process, and the power loss compensation power supply outputs DC high voltage electricity to supply the second OBC, the first DCDC, and the second DCDC respectively;

[0011] After the second OBC, the first DCDC, and the second DCDC are turned on and obtain the electric energy supplied by the power loss compensation power supply, the second OBC outputs a 220VAC voltage to supply power to the first OBC;

[0012] After the first OBC receives the electric energy supplied by the second OBC, it outputs a high-voltage direct current which is returned to the output end of the power loss compensation power supply for reuse;

[0013] After the first DCDC and the second DCDC obtain the electric energy from the power loss compensation power supply, they output low-voltage direct current to supply the first inverter and the second inverter respectively;

[0014] After the first inverter and the second inverter obtain voltage DC power, they respectively output 220VAC power and return it to the input end of the power loss compensation power supply for reuse;

[0015] The aging device is turned off and the aging process is finished.

[0016] Further improvement is that the start-up process of the aging device is as follows:

[0017] Through computer control, the low-voltage DC auxiliary power supply, the power loss compensation power supply, the second OBC, the first OBC, the first DCDC, the first inverter, the second DCDC, and the second inverter are turned on in sequence.

[0018] A further improvement is to monitor the real-time working status of the aged OBC and DCDC.

[0019] A further improvement is to monitor the real-time working status of the aged OBC and DCDC by regularly transmitting messages through the communication network.

[0020] Further improvement is that the shutdown process of the aging device is as follows:

[0021] First, shut down the first OBC, the first inverter, and the second inverter respectively, and then shut down the second OBC, the first DCDC, and the second DCDC;

[0022] Finally, turn off the power loss compensation power supply and the low-voltage DC auxiliary power supply.

[0023] The beneficial effects of the present invention are:

[0024] The OBC and DCDC aging devices and aging methods with energy recovery functions provided by the present invention are as follows: after the bidirectional OBC1 obtains the electric energy supplied by the bidirectional OBC2, it outputs high-voltage direct current and returns to the output end of the power loss compensation power supply for reuse; the two inverters respectively output 220VAC electricity and return to the input end of the power loss compensation power supply for reuse, thus forming the effect of electric energy recovery and reuse, thereby achieving the effect of energy saving and environmental protection, and avoiding the waste of energy; at the same time, it greatly reduces the number of refrigeration and cooling equipment in the aging room, avoids the waste of equipment resources, and reduces the manufacturing cost of the aging room. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a structural schematic diagram of the OBC and DCDC aging device with energy recovery function of the present invention. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] In the description of the invention, it is necessary to understand that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to the specific circumstances.

[0031] like Figure 1 As shown, the present invention provides an OBC and DCDC aging device with energy recovery function, including: a computer 1, a communication unit 2, an electric power loss compensation power supply 3, a low-voltage DC auxiliary power supply 4, an anti-backflow diode D1, an anti-backflow diode D2, a first OBC 5, a second OBC 6, a first DCDC 7, a second DCDC 8, a first inverter 9 and a second inverter 10, the computer 1 is connected to the communication unit 2, the communication unit 2 is connected to the first OBC 5, the second OBC 6, the first DCDC 7, the second DCDC 8, the first inverter 9 and the second inverter 10, the electric power loss compensation power supply 3 is connected to the first OBC 5, the second OBC 6, the first DCDC 7, the second DCDC 8, the low-voltage DC auxiliary power supply 4 is connected to the first OBC 5, the second OBC 6, the first DCDC 7, the second DCDC 8, the first inverter 9 and the second inverter 10, the anti-backflow diode D1 is connected to the positive electrode of the electric power loss compensation power supply 3, and the anti-backflow diode D2 is connected to the first OBC 5 positive pole, the positive pole of the first OBC 5 is connected to the ammeter A1, the positive pole of the second OBC 6 is connected to the ammeter A2, the positive pole of the first DCDC 7 is connected to the ammeter A3, and the positive pole of the second DCDC 8 is connected to the ammeter A4.

[0032] The first inverter 9 and the second inverter 10 have a phase-locked loop function.

[0033] In this device, every two devices form a group for electric energy recovery, among which the bidirectional first OBC and the bidirectional second OBC are recovered as a group, the first DCDC and the first inverter 9 are recovered as a group, and the second DCDC and the second inverter 10 are recovered as a group, forming electric energy recovery and reuse. Compared with traditional aging devices, the number of products with the same electric energy aging is greatly increased.

[0034] Further improvement is that the positive end of the power loss compensation power supply 3 is connected to the positive end of the anti-backflow diode D1, the negative end of the anti-backflow diode D1 is respectively connected to the negative end of the anti-backflow diode D2 and the positive ends of ammeters A2, A3, and A4, the positive end of the anti-backflow diode D2 is connected to the negative end of the ammeter A1, the positive end of the ammeter A1 is connected to the positive electrode of the first OBC5, the negative end of the power loss compensation power supply 3 is respectively connected to the negative ends of the first OBC5, the second OBC6, the first DCDC7, and the second DCDC8, the AC output end of the second OBC6 is connected to the AC input end of the first OBC5, the low-voltage DC output end of the first DCDC7 is connected to the low-voltage input end of the first inverter 9, and the second DCDC8 is connected to the low-voltage DC output end of the first inverter 9. The low-voltage DC output end of 8 is connected to the low-voltage input end of the second inverter 10, the L / N lines of the first inverter 9 and the second inverter 10 are respectively connected to the 220VAC input end L / N line of the power loss compensation power supply 3, the output of the low-voltage DC auxiliary power supply 4 is connected to the positive and negative polarities of the auxiliary control current of the first OBC 5, the second OBC 6, the first DCDC 7, the second DCDC 8, the first inverter 9, and the second inverter 10, and the communication unit 2 is respectively connected to the CAN transceiver ports of the first OBC 5, the second OBC 6, the first DCDC 7, the second DCDC 8, the first inverter 9, and the second inverter 10.

[0035] A further improvement is that both the first OBC 5 and the second OBC 6 are bidirectional OBCs.

[0036] The present invention also provides an aging method for an OBC or DCDC aging device with energy recovery function using any one of the above, comprising the following steps:

[0037] Turn on the aging device;

[0038] After starting up, the device enters the aging process, and the power loss compensation power supply outputs DC high voltage electricity to supply the second OBC, the first DCDC, and the second DCDC respectively;

[0039] After the second OBC, the first DCDC, and the second DCDC are turned on and obtain the electric energy supplied by the power loss compensation power supply, the second OBC outputs a 220VAC voltage to supply power to the first OBC;

[0040] After the first OBC receives the electric energy supplied by the second OBC, it outputs a high-voltage direct current which is returned to the output end of the power loss compensation power supply for reuse;

[0041] After the first DCDC and the second DCDC obtain the electric energy from the power loss compensation power supply, they output low-voltage direct current to supply the first inverter and the second inverter respectively;

[0042] After the first inverter and the second inverter obtain voltage DC power, they respectively output 220VAC power and return it to the input end of the power loss compensation power supply for reuse;

[0043] The aging device is turned off and the aging process is finished.

[0044] Further improvement is that the start-up process of the aging device is as follows:

[0045] Through computer control, the low-voltage DC auxiliary power supply, the power loss compensation power supply, the second OBC, the first OBC, the first DCDC, the first inverter, the second DCDC, and the second inverter are turned on in sequence.

[0046] A further improvement is to monitor the real-time working status of the aged OBC and DCDC.

[0047] A further improvement is to monitor the real-time working status of the aged OBC and DCDC by regularly transmitting messages through the communication network.

[0048] Further improvement is that the shutdown process of the aging device is as follows:

[0049] First, shut down the first OBC, the first inverter, and the second inverter respectively, and then shut down the second OBC, the first DCDC, and the second DCDC;

[0050] Finally, turn off the power loss compensation power supply and the low-voltage DC auxiliary power supply.

[0051] The OBC and DCDC aging device and aging method with energy recovery function provided by the present invention are as follows: after the bidirectional first OBC obtains the electric energy supplied by the bidirectional second OBC, it outputs high-voltage direct current and returns to the output end of the power loss compensation power supply for reuse; the first inverter and the second inverter respectively output 220VAC electricity and return to the input end of the power loss compensation power supply for reuse, thus forming the effect of electric energy recovery and reuse, thereby achieving the effect of energy saving and environmental protection, and avoiding the waste of energy; at the same time, the number of refrigeration and cooling equipment in the aging room is greatly reduced, avoiding the waste of equipment resources, and reducing the manufacturing cost of the aging room.

[0052] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An OBC and DCDC aging device with energy recovery function, characterized in that: include: A computer, a communication unit, an electric power loss compensation power supply, a low-voltage DC auxiliary power supply, an anti-backflow diode D1, an anti-backflow diode D2, a first OBC, a second OBC, a first DCDC, a second DCDC, a first inverter and a second inverter. The computer is connected to the communication unit, and the communication unit is connected to the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter and the second inverter. The electric power loss compensation power supply is connected to the first OBC, the second OBC, the first DCDC and the second DCDC. The low-voltage DC auxiliary power supply is connected to the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter and the second inverter. The anti-backflow diode D1 is connected to the positive electrode of the electric power loss compensation power supply, and the anti-backflow diode D2 is connected to the positive electrode of the first OBC. The positive electrode of the first OBC is connected to the ammeter A1, the positive electrode of the second OBC is connected to the ammeter A2, the positive electrode of the first DCDC is connected to the ammeter A3, and the positive electrode of the second DCDC is connected to the ammeter A4.

2. The OBC and DCDC aging device with energy recovery function according to claim 1 is characterized in that: The positive terminal of the power loss compensation power supply output is connected to the positive terminal of the anti-backflow diode D1, the negative terminal of the anti-backflow diode D1 is respectively connected to the negative terminal of the anti-backflow diode D2 and the positive terminals of ammeters A2, A3, and A4, the positive terminal of the anti-backflow diode D2 is connected to the negative terminal of ammeter A1, the positive terminal of ammeter A1 is connected to the positive terminal of the first OBC, the negative terminal of the power loss compensation power supply is respectively connected to the negative terminals of the first OBC, the second OBC, the first DCDC, and the second DCDC, the AC output terminal of the second OBC is connected to the AC input terminal of the first OBC, and the low-voltage DC output terminal of the first DCDC is connected to the low-voltage DC output terminal of the second OBC. A low-voltage input end of an inverter, a low-voltage DC output end of the second DCDC is connected to the low-voltage input end of the second inverter, the L / N lines of the first inverter and the second inverter are respectively connected to the 220VAC input end L / N lines of the power loss compensation power supply, the output of the low-voltage DC auxiliary power supply is connected to the positive and negative polarities of the auxiliary control current of the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter, and the second inverter, and the communication unit is respectively connected to the CAN transceiver ports of the first OBC, the second OBC, the first DCDC, the second DCDC, the first inverter, and the second inverter.

3. The OBC and DCDC aging device with energy recovery function according to claim 1 is characterized in that: The first OBC and the second OBC are both bidirectional OBCs.

4. An aging method for an OBC, DCDC aging device with energy recovery function according to any one of claims 1 to 3, characterized in that: The steps include: Turn on the aging device; After starting up, the device enters the aging process, and the power loss compensation power supply outputs DC high voltage electricity to supply the second OBC, the first DCDC, and the second DCDC respectively; After the second OBC, the first DCDC, and the second DCDC are turned on and obtain the electric energy supplied by the power loss compensation power supply, the second OBC outputs a 220VAC voltage to supply power to the first OBC; After the first OBC receives the electric energy supplied by the second OBC, it outputs a high-voltage direct current which is returned to the output end of the power loss compensation power supply for reuse; After the first DCDC and the second DCDC obtain the electric energy from the power loss compensation power supply, they output low-voltage direct current to supply the first inverter and the second inverter respectively; After the first inverter and the second inverter obtain voltage DC power, they respectively output 220VAC power and return it to the input end of the power loss compensation power supply for reuse; The aging device is turned off and the aging process is finished.

5. The aging method according to claim 4, characterized in that: The start-up process of the aging device is as follows: Through computer control, the low-voltage DC auxiliary power supply, the power loss compensation power supply, the second OBC, the first OBC, the first DCDC, the first inverter, the second DCDC, and the second inverter are turned on in sequence.

6. The aging method according to claim 5, characterized in that: Monitor the real-time working status of the aged OBC and DCDC.

7. The aging method according to claim 6, characterized in that: The real-time working status of the aged OBC and DCDC is monitored by regularly transmitting messages through the communication network.

8. The aging method according to claim 4, characterized in that: The shutdown process of the aging device is as follows: First, shut down the first OBC, the first inverter, and the second inverter respectively, and then shut down the second OBC, the first DCDC, and the second DCDC; Finally, turn off the power loss compensation power supply and the low-voltage DC auxiliary power supply.

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