Aging device and method based on bidirectional converter

Abstract

The invention discloses an aging device and method based on bidirectional transducers, and belongs to the technical field of battery management and power electronics, and the device comprises a mutual charging and discharging system unit which comprises a first bidirectional transducer and a second bidirectional transducer which are respectively connected with a power output end, an input end and a communication end, the simulation module is used for simulating a power-on aging process of a bidirectional conversion product; the starting unit is used for providing instantaneous large energy for the mutual charging and discharging system unit; the electricity supplementing unit is used for supplementing electric energy lost in the mutual charging and discharging process for the mutual charging and discharging system unit by using a stable voltage; and the monitoring unit is used for controlling the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit to respectively charge or discharge, so as to achieve the purpose of simulating power-on aging. The device provided by the invention avoids a traditional feed type aging idea, does not need an electronic load or grid-connected control, and has the advantages of low cost, high aging efficiency, low energy consumption and simple control.

Description

Technical Field

[0001] The invention belongs to the technical field of battery management and power electronics, and in particular relates to an aging device and method based on a bidirectional converter. Background Art

[0002] Before bidirectional conversion products leave the factory, in order to ensure stability and reliability in actual use, they are generally required to undergo power-on aging tests to simulate the working state of electronic products in the actual use environment and test various performance indicators of the products. The reliability of the products can be improved through the following two aspects: (1) screening out components with failure risks; (2) further verifying the reliability of the product software and hardware design. This is to achieve aging testing of electronic products.

[0003] The electronic products that are tested for aging have requirements for the aging time, so the aging equipment generally used for aging tests not only consumes a lot of electricity but also requires special air conditioners to cool down; many aging equipment currently have feedback functions, and the loads originally used to bear the output voltage of electronic products are replaced with electronic equipment with feedback functions. The electronic equipment is responsible for converting the DC output voltage of the electronic products being tested for aging into AC voltage and feeding it back to the power grid to achieve the purpose of saving energy. The electronic equipment with feedback function generally saves about 60% of electricity depending on the product. However, it is obvious that the cost of feedback aging equipment is significantly increased due to the addition of electronic equipment and grid-connected control parts, and the reliability is reduced due to the influence of electronic equipment. Therefore, the actual power saving performance has not been substantially improved.

[0004] The patent document with publication number CN106093803A discloses a switching power supply aging test circuit, including: an AC / DC bidirectional converter, a DC / DC load and a first terminal, the AC end of the AC / DC bidirectional converter is connected to the mains power grid, the DC end is connected to the first terminal, the DC / DC load output end is connected to the first terminal, when the power supply under test is a DC / DC switching power supply, the input end of the DC / DC switching power supply under test is connected to the first terminal, and the output end is connected to the input end of the DC / DC load; when the power supply under test is an AC / DC switching power supply, the input end of the AC / DC switching power supply under test is connected to the mains power, and the output end is connected to the input end of the DC / DC load. However, the technical solution proposed by the invention still needs to add an electronic load to bear the output voltage of the product under aging test, that is, the electronic load will consume part of the electric energy, and the energy saving effect is not significantly improved.

[0005] The patent document with publication number CN116027081A discloses an aging test system and an aging test method for a bidirectional DC / DC power supply, including: a first bidirectional AC / DC power supply, a first bidirectional DC / DC power supply, a second bidirectional AC / DC power supply, a second bidirectional DC / DC power supply, a switch and a host computer, wherein the AC side of the first bidirectional AC / DC power supply is used to be connected to the AC power supply; the high voltage side of the first bidirectional DC / DC power supply is connected to the DC side of the first bidirectional AC / DC power supply; the AC side of the second bidirectional AC / DC power supply is used to be connected to the AC power supply; the high voltage side of the second bidirectional DC / DC power supply is connected to the DC side of the second bidirectional AC / DC power supply, and the low voltage side of the second bidirectional DC / DC power supply is connected to the low voltage side of the first bidirectional DC / DC power supply; the switch is respectively connected to the first bidirectional DC / DC power supply and the second bidirectional DC / DC power supply for communication; the host computer is connected to the switch for communication, and is used to control the working state of the first bidirectional DC / DC power supply and the second bidirectional DC / DC power supply. However, the invention adopts the traditional feeding type aging equipment, which still needs high-power equipment to supply energy for it. On the other hand, by feeding electric energy back to the AC power grid, it has no substantial beneficial effect on improving the efficiency and reducing the energy consumption of the aging equipment. Summary of the invention

[0006] The purpose of the present invention is to provide an aging device and method based on a bidirectional converter. In view of the energy loss problem caused by the need to use electronic loads or add grid-connected control in the current aging equipment of bidirectional conversion products, the aging device proposed in the present invention simulates the power-on aging process of two bidirectional conversion products through two opposing bidirectional converters, without the need for electronic loads or grid-connected control, and has the advantages of low cost, high aging efficiency and simple control.

[0007] In order to achieve the above-mentioned invention object, the technical solution provided by the present invention is as follows:

[0008] In a first aspect, the present invention provides an aging device based on a bidirectional converter, comprising the following units:

[0009] A mutual charging and discharging system unit includes a first bidirectional converter and a second bidirectional converter, wherein the power output end, the input end and the communication end of the first bidirectional converter and the second bidirectional converter are respectively connected, and the power-on aging process of the two bidirectional conversion products is simulated through the mutual charging and discharging process of the first bidirectional converter and the second bidirectional converter;

[0010] A starting unit, used to provide instantaneous large energy to start the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit according to the starting energy requirement of the mutual charging and discharging system unit;

[0011] The power supplement unit, through a power converter, uses a stable DC voltage or AC voltage to supplement the electric energy lost in the mutual charging and discharging process for the mutual charging and discharging system units;

[0012] The monitoring unit controls the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit to charge or discharge respectively according to the aging requirements of the bidirectional conversion product to be aged, so as to achieve the purpose of simulating power-on aging.

[0013] In view of the aging idea that traditional aging devices need to use electronic loads to take over the output voltage of bidirectional conversion products during the power-on aging process, or use feed-type aging devices to return the output voltage of bidirectional conversion products to the AC power grid, the aging device proposed in the present invention utilizes the characteristic of bidirectional conversion products that can transmit power in both directions, designs two opposing bidirectional converters, and simulates the power-on aging process of the bidirectional conversion products through the opposing process of the bidirectional converters. No electronic load or feedback grid is required. It only needs to use the starting unit to provide instantaneous high-power starting energy to the mutual charging and discharging system unit, and control the charging and discharging state of the opposing bidirectional converters through the monitoring unit to control the mutual charging and discharging system unit to simulate the power-on aging process of the bidirectional conversion products.

[0014] In addition, when electric energy flows between two bidirectional converters in a mutually charging and discharging system unit, the present invention further designs a power-replenishing unit with a power converter as the core device. The power-replenishing unit is used to supplement the small amount of electric energy lost in the flow, so as to realize the power-on aging simulation of the bidirectional conversion product. The power of the power-replenishing unit is generally only 1 / 10 of the power of the power converter, which greatly reduces the cost of the power-replenishing unit. Furthermore, the aging device proposed by the present invention can easily realize multi-layer cascading, has a high degree of integration, and is simple to control and low in cost. It can significantly improve the aging efficiency of the power-on aging of the bidirectional conversion product and save electric energy.

[0015] As a further preferred embodiment of the present invention, in the mutual charging and discharging system unit, the bidirectional conversion product is an electronic product with a bidirectional power conversion function, which is a bidirectional DC converter, a bidirectional inverter or a bidirectional rectifier.

[0016] Furthermore, in the mutual charging and discharging system unit, the power output end, input end and communication end of the first bidirectional converter and the second bidirectional converter are connected to each other, including:

[0017] The positive input and the negative input of the first bidirectional converter and the second bidirectional converter are connected to each other, and the obtained positive and negative lines are used as power buses for correspondingly connecting to the positive and negative terminals of the starting unit and the power supplement unit;

[0018] The positive output and the negative output of the first bidirectional converter and the second bidirectional converter are respectively connected;

[0019] The communication lines of the first bidirectional converter and the second bidirectional converter are respectively connected to each other and connected to the communication bus of the monitoring unit.

[0020] Furthermore, the positive and negative terminals of the start-up unit are correspondingly connected to the positive and negative terminals of the power-compensating unit for receiving electric energy from the power-compensating unit.

[0021] Furthermore, the starting unit starts the working process of the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit, including:

[0022] Before the mutual charging and discharging system units are started, the starting unit needs to store energy by connecting to the power supply unit;

[0023] When the mutual charging and discharging system unit is started, the starting unit provides voltage and starting energy to the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit;

[0024] After the mutual charging and discharging system units are started, the starting unit stops providing voltage and starting energy, does not participate in the work of the aging device, and returns to the energy storage state.

[0025] Furthermore, the power replenishment unit provides voltage and power according to the port requirements of the input ends of the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit, ensuring that the input ends of the first bidirectional converter and the second bidirectional converter are powered up during the power-on aging process.

[0026] Furthermore, in the monitoring unit, according to the aging requirements of the bidirectional conversion product to be aged, the first bidirectional converter and the second bidirectional converter are controlled to be in the charging and discharging states respectively, and the output voltage, output current, working sequence and aging time of the first bidirectional converter and the second bidirectional converter are adjusted respectively.

[0027] In a second aspect, in order to achieve the above-mentioned object of the invention, the present invention also provides an aging method based on a bidirectional converter, comprising the following steps:

[0028] Step 1: using a mutual charging and discharging system unit, including a first bidirectional converter and a second bidirectional converter, wherein the power output end, the input end and the communication end of the first bidirectional converter and the second bidirectional converter are respectively connected, and the power-on aging process of the two bidirectional conversion products is simulated through the mutual charging and discharging process of the first bidirectional converter and the second bidirectional converter;

[0029] Step 2: using a starting unit, according to the starting energy requirement of the mutual charging and discharging system unit, providing instantaneous large energy to start the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit;

[0030] Step 3: Using the power supplement unit, through the power converter, to supplement the electric energy lost in the mutual charging and discharging process for the mutual charging and discharging system units with a stable DC voltage or AC voltage;

[0031] Step 4: Using the monitoring unit, according to the aging requirements of the bidirectional conversion product to be aged, control the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit to charge or discharge respectively, so as to achieve the purpose of simulating power-on aging.

[0032] The beneficial effects of the present invention are as follows:

[0033] (1) The present invention ingeniously utilizes the bidirectional working characteristic of bidirectional conversion products during power-on aging, and simulates the power-on aging process of two bidirectional conversion products through two opposing bidirectional converters, without the need for electronic load or grid-connected control, and provides a monitoring unit to control one bidirectional converter in the mutually charging and discharging system unit to work in a discharging state and the other bidirectional converter to work in a charging state, which has the characteristics of simple control, low cost, and high aging efficiency;

[0034] (2) The present invention further takes into account that there are losses in the process of simulating the power-on aging of bidirectional conversion products using a bidirectional converter, and therefore a power compensation unit is provided to compensate the power lost by the mutual charging and discharging system unit due to the losses. Since the power compensation unit only compensates the power consumption part of the mutual charging and discharging system, only a relatively small power compensation unit is needed to compensate the high-power converter. At the same time, the relatively small power compensation unit is also connected to the starting unit to store energy for the starting unit, and the starting unit after energy storage is used to provide the aging device with the electric energy required for starting. The aging scheme proposed by the present invention has the advantages of high reliability, low energy consumption, and small aging system loss compared to the traditional aging equipment with feedback function, and the aging efficiency is twice that of the traditional scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of an aging device based on a bidirectional converter provided in an embodiment of the present invention.

[0036] Figure 2 It is a flow chart of an aging method based on a bidirectional converter provided in an embodiment of the present invention.

[0037] Figure 3 It is a structural schematic diagram of an aging device based on a bidirectional converter provided in the first embodiment of the present invention.

[0038] Figure 4 It is a structural schematic diagram of an aging device based on a bidirectional converter provided in the second embodiment of the present invention.

[0039] Figure 5It is a schematic diagram of the structure of an aging device based on a bidirectional converter provided in the third embodiment of the present invention.

[0040] Figure 6 It is a schematic diagram of the structure of a multi-layer aging device cascade system provided in Embodiment 4 of the present invention.

[0041] Figure 7 It is a flowchart of a key control process of a monitoring unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0043] like Figure 1 As shown, the embodiment provides an aging device based on a bidirectional converter, comprising the following units:

[0044] The mutual charging and discharging system unit includes a first bidirectional converter and a second bidirectional converter, wherein the power output end, input end and communication end of the first bidirectional converter and the second bidirectional converter are respectively connected, and the power-on aging process of the two bidirectional conversion products is simulated through the mutual charging and discharging process of the first bidirectional converter and the second bidirectional converter.

[0045] like Figure 1 As shown, the positive power input and negative power input of bidirectional converter 1 and bidirectional converter 2 are connected to each other, and the obtained positive and negative lines are used as power buses, which are used to be connected to the positive and negative ends of the starting unit and the power compensation unit. The positive power output and negative power output of bidirectional converter 1 and bidirectional converter 2 are connected to each other, which are used to provide electric energy to each other during the simulation of actual power-on aging. The communication lines of bidirectional converter 1 and bidirectional converter 2 are connected to each other, based on the communication protocol RS485_1 in the industrial control environment, and are connected to the communication bus of the monitoring unit.

[0046] The starting unit is used to provide instantaneous large energy to start the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit according to the starting energy requirement of the mutual charging and discharging system unit.

[0047] The ports of the starting unit are correspondingly connected to the output end of the power compensation unit and the input ends of the bidirectional converter 1 and the bidirectional converter 2. On the one hand, before the mutual charging and discharging system unit is started, the output end of the power compensation unit supplies power to the starting unit. On the other hand, when the mutual charging and discharging system unit is started, the starting unit provides instantaneous large energy to the input ends of the bidirectional converter 1 and the bidirectional converter 2 to start the power-on aging test simulation.

[0048] The power compensation unit uses a power converter to compensate for the electric energy lost in the mutual charging and discharging process of the mutual charging and discharging system units with a stable DC voltage or AC voltage.

[0049] The core component of the power supply unit is the power converter, which provides voltage and power through an external power supply according to the port requirements of the input ends of the bidirectional converter 1 and the bidirectional converter 2 in the mutual charging and discharging system unit. In addition, the power supply unit also needs to supply power to the starting unit.

[0050] The monitoring unit controls the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit to charge or discharge respectively according to the aging requirements of the bidirectional conversion product to be aged, so as to achieve the purpose of simulating power-on aging.

[0051] Based on the RS485_1 protocol, the communication ports of bidirectional converter 1 and bidirectional converter 2 are connected to the communication bus of the monitoring unit. According to the power-on aging requirements of the bidirectional conversion products to be aged, the output voltage, output current, working sequence and aging time of bidirectional converter 1 and bidirectional converter 2 are set to simulate the power-on aging test.

[0052] Based on the same inventive concept, the embodiment of the present invention also provides an aging method based on a bidirectional converter, such as Figure 2 As shown, the following steps are included;

[0053] S110, using a mutual charging and discharging system unit, including a first bidirectional converter and a second bidirectional converter, wherein the power output end, the input end and the communication end of the first bidirectional converter and the second bidirectional converter are respectively connected, and the power-on aging process of the two bidirectional conversion products is simulated through the mutual charging and discharging process of the first bidirectional converter and the second bidirectional converter;

[0054] S120, using a starting unit, according to a starting energy requirement of the mutual charging and discharging system unit, providing instantaneous large energy to start the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit;

[0055] S130, using a power supplement unit to supplement the electric energy lost in the mutual charging and discharging process of the mutual charging and discharging system units with a stable DC voltage or AC voltage through a power converter;

[0056] S140, using the monitoring unit, according to the aging requirements of the bidirectional conversion product to be aged, controlling the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit to charge or discharge respectively, so as to achieve the purpose of simulating power-on aging.

[0057] Example 1

[0058] like Figure 3As shown, the two bidirectional DC converters form a mutual charging and discharging system unit, wherein the positive end of the power port P1.1 of the bidirectional DC converter 1 is connected to the positive end of the power port P1.2 of the bidirectional DC converter 2, and the negative end of the power port P1.1 of the bidirectional DC converter 1 is connected to the negative end of the power port P1.2 of the bidirectional DC converter 2; the positive end of the power port P2.1 of the bidirectional DC converter 1 is connected to the positive end of the power port P2.2 of the bidirectional DC converter 2, and the negative end of the power port P2.1 of the bidirectional DC converter 1 is connected to the negative end of the power port P2.2 of the bidirectional DC converter 2; the communication port R1 of the bidirectional DC converter 1 is connected to the communication port R2 of the bidirectional DC converter 2, and the communication port T1 of the bidirectional DC converter 1 is connected to the communication port T2 of the bidirectional DC converter 2. The positive and negative electrodes of the start-up unit are connected to the positive and negative electrodes of the power-compensating unit respectively, the positive end of the power-compensating unit power output terminal Vb is connected to the positive end of P1.1 and the positive end of P1.2, and the negative end of the power-compensating unit power output terminal Vb is connected to the negative end of P1.1 and the negative end of P1.2. The R end of the monitoring unit is connected to R1 and R2, and the T end is connected to T1 and T2. In the first aging period, the monitoring unit controls the bidirectional DC converter 1 to work in the discharge stage (flowing from the P1 port to the P2 port) through communication, while the bidirectional DC converter 2 works in the charging stage (flowing from the P2 port to the P1 port); in the second aging period, the monitoring unit controls the bidirectional DC converter 2 to work in the discharge stage (flowing from the P1 port to the P2 port) through communication, while the bidirectional DC converter 1 works in the charging stage (flowing from the P2 port to the P1 port); the power replenishment unit first fully charges the starting unit, and the starting unit provides the working starting voltage and energy for the P1 ports of the two bidirectional DC converters, and the energy loss in the subsequent continuous operation of the two converters will be continuously provided by the power replenishment unit.

[0059] Example 2

[0060] like Figure 4As shown, the two bidirectional DC converters form a mutual charging and discharging system unit, wherein the positive end of the power port P1.1 of the bidirectional DC converter 1 is connected to the positive end of the power port P1.2 of the bidirectional DC converter 2, and the negative end of the power port P1.1 of the bidirectional DC converter 1 is connected to the negative end of the power port P1.2 of the bidirectional DC converter 2; the positive end of the power port P2.1 of the bidirectional DC converter 1 is connected to the positive end of the power port P2.2 of the bidirectional DC converter 2, and the negative end of the power port P2.1 of the bidirectional DC converter 1 is connected to the negative end of the power port P2.2 of the bidirectional DC converter 2; the communication port R1 of the bidirectional DC converter 1 is connected to the communication port R2 of the bidirectional DC converter 2, and the communication port T1 of the bidirectional DC converter 1 is connected to the communication port T2 of the bidirectional DC converter 2. The positive and negative electrodes of the start-up unit are connected to the positive and negative electrodes of the power-compensating unit respectively, the positive end of the power-compensating unit power output terminal Vb is connected to the positive end of P2.1 and the positive end of P2.2, and the negative end of the power-compensating unit power output terminal Vb is connected to the negative end of P2.1 and the negative end of P2.2. The R end of the monitoring unit is connected to R1 and R2, and the T end is connected to T1 and T2. In the first aging period, the monitoring unit controls the bidirectional DC converter 1 to work in the charging stage (flowing from the P2 port to the P1 port) through communication, while the bidirectional DC converter 2 works in the discharging stage (flowing from the P1 port to the P2 port); in the second aging period, the monitoring unit controls the bidirectional DC converter 2 to work in the charging stage (flowing from the P2 port to the P1 port) through communication, while the bidirectional DC converter 1 works in the discharging stage (flowing from the P1 port to the P2 port); the power replenishment unit first fully charges the starting unit, and the starting unit provides the working starting voltage and energy for the P2 ports of the two bidirectional DC converters, and the energy loss in the subsequent continuous operation of the two converters will be continuously provided by the power replenishment unit.

[0061] Example 3

[0062] like Figure 5As shown, two bidirectional inverters form a mutual charging and discharging system unit, wherein the positive end of the power port P1.1 of the bidirectional inverter 1 is connected to the positive end of the power port P1.2 of the bidirectional inverter 2, and the negative end of the power port P1.1 of the bidirectional inverter 1 is connected to the negative end of the power port P1.2 of the bidirectional inverter 2; the AC end of the power port P2.1 of the bidirectional inverter 1 is connected to the AC end of the power port P2.2 of the bidirectional inverter 2; the communication port R1 of the bidirectional inverter 1 is connected to the communication port R2 of the bidirectional inverter 2, and the communication port T1 of the bidirectional inverter 1 is connected to the communication port T2 of the bidirectional inverter 2. The positive and negative poles of the starting unit are respectively connected to the positive and negative poles of the power compensation unit, and the output voltage of the power compensation unit is a stable DC voltage, and the positive end of its power output terminal Vb is connected to the positive end of P1.1 and the positive end of P1.2, and the negative end of the power output terminal Vb is connected to the negative end of P1.1 and the negative end of P1.2. The R end of the monitoring unit is connected to R1 and R2, and the T end is connected to T1 and T2. In the first aging period, the monitoring unit controls the bidirectional inverter 1 to work in the discharge stage (flowing from the P1 port to the P2 port) through communication, while the bidirectional inverter 2 works in the charging stage (flowing from the P2 port to the P1 port); in the second aging period, the monitoring unit controls the bidirectional inverter 2 to work in the discharge stage (flowing from the P1 port to the P2 port) through communication, while the bidirectional inverter 1 works in the charging stage (flowing from the P2 port to the P1 port); the power replenishment unit first fully charges the starting unit, and the starting unit provides the working starting voltage and energy for the P1 port of the two bidirectional DC converters, and the energy loss in the subsequent continuous operation of the two converters will be continuously provided by the power replenishment unit.

[0063] Example 4

[0064] like Figure 6 As shown in the figure, in order to improve the aging efficiency, N aging devices based on bidirectional converters are combined into a multi-layer aging device cascade system, and a common power supply unit is used to improve the efficiency of the multi-layer aging device cascade system and reduce the overall cost. For specific connection methods, please refer to Figure 6 The mutual charging and discharging system units are connected in the same way as the start-up unit, and the positive and negative poles of the start-up unit in each aging unit are connected in parallel, and then connected to the positive and negative poles of the power replenishment unit; and the 485 communication lines in the mutual charging and discharging system units are connected to each other, and then connected to the 485 communication lines of the monitoring unit. In this way, the work of multiple aging systems is gradually started through the monitoring system, so as to improve the overall efficiency of the aging system.

[0065] The key control process of the monitoring unit in the above embodiment of the present invention is as follows: Figure 7As shown, at the beginning of aging, the output voltage, output current, working sequence and aging time of the bidirectional converter are first set through the monitoring unit, and then aging is carried out. According to the aging requirements of the bidirectional conversion product to be aged, it is determined whether the current round of aging test is completed. After completion, the aging time and direction are changed, and the next round of aging test is carried out. Finally, the aging is completed, and the test data obtained during the aging process is stored.

[0066] As for the aging method based on the bidirectional converter provided in the embodiment of the present invention, since it basically corresponds to the device embodiment, the relevant parts can refer to the partial description of the device embodiment. The device embodiment described above is only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of the present invention. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0067] It should be noted that the aging method based on the bidirectional converter provided in the above embodiment and the aging device embodiment based on the bidirectional converter belong to the same concept. The specific implementation process is detailed in the aging device embodiment based on the bidirectional converter, which will not be repeated here.

[0068] The above is only a preferred implementation case of the present invention and does not limit the present invention in any form. Although the implementation process of the present invention is described in detail above, for those familiar with the art, they can still modify the technical solutions recorded in the above examples, or replace some of the technical features therein with equivalents. All modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aging device based on a bidirectional converter, characterized in that: The following units are included: A mutual charging and discharging system unit includes a first bidirectional converter and a second bidirectional converter, wherein the power output end, the input end and the communication end of the first bidirectional converter and the second bidirectional converter are respectively connected, and the power-on aging process of the two bidirectional conversion products is simulated through the mutual charging and discharging process of the first bidirectional converter and the second bidirectional converter; A starting unit, used to provide instantaneous large energy to start the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit according to the starting energy requirement of the mutual charging and discharging system unit; The power supplement unit, through a power converter, uses a stable DC voltage or AC voltage to supplement the electric energy lost in the mutual charging and discharging process for the mutual charging and discharging system units; The monitoring unit controls the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit to charge or discharge respectively according to the aging requirements of the bidirectional conversion product to be aged, so as to achieve the purpose of simulating power-on aging.

2. The aging device based on the bidirectional converter according to claim 1 is characterized in that: In the mutual charging and discharging system unit, the bidirectional conversion product is an electronic product with a bidirectional power conversion function, which is a bidirectional DC converter, a bidirectional inverter or a bidirectional rectifier.

3. The aging device based on the bidirectional converter according to claim 1, characterized in that: In the mutual charging and discharging system unit, the power output end, input end and communication end of the first bidirectional converter and the second bidirectional converter are connected to each other, including: The positive input and the negative input of the first bidirectional converter and the second bidirectional converter are connected to each other, and the obtained positive and negative lines are used as power buses for correspondingly connecting to the positive and negative terminals of the starting unit and the power supplement unit; The positive output and the negative output of the first bidirectional converter and the second bidirectional converter are respectively connected; The communication lines of the first bidirectional converter and the second bidirectional converter are respectively connected to each other and connected to the communication bus of the monitoring unit.

4. The aging device based on the bidirectional converter according to claim 3 is characterized in that: The positive and negative terminals of the start-up unit are also connected to the positive and negative terminals of the power-compensating unit correspondingly, so as to receive the electric energy of the power-compensating unit.

5. The aging device based on the bidirectional converter according to claim 1 or 4, characterized in that: The starting unit starts the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit, and the working process includes: Before the mutual charging and discharging system units are started, the starting unit needs to store energy by connecting to the power supply unit; When the mutual charging and discharging system unit is started, the starting unit provides voltage and starting energy to the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit; After the mutual charging and discharging system units are started, the starting unit stops providing voltage and starting energy, does not participate in the work of the aging device, and returns to the energy storage state.

6. The aging device based on the bidirectional converter according to claim 1, characterized in that: The power replenishment unit provides voltage and power according to the port requirements of the first bidirectional converter and the second bidirectional converter input ends in the mutual charging and discharging system unit, ensuring that the first bidirectional converter and the second bidirectional converter input ends are powered up during the power-on aging process.

7. The aging device based on the bidirectional converter according to claim 1, characterized in that: In the monitoring unit, according to the aging requirements of the bidirectional conversion product to be aged, the first bidirectional converter and the second bidirectional converter are controlled to be in the charging and discharging states respectively, and the output voltage, output current, working sequence and aging time of the first bidirectional converter and the second bidirectional converter are adjusted respectively.

8. An aging method based on a bidirectional converter, characterized in that: Applied to the aging device based on the bidirectional converter according to any one of claims 1 to 7, the aging method based on the bidirectional converter comprises: Step 1: using a mutual charging and discharging system unit, including a first bidirectional converter and a second bidirectional converter, wherein the power output end, the input end and the communication end of the first bidirectional converter and the second bidirectional converter are respectively connected, and the power-on aging process of the two bidirectional conversion products is simulated through the mutual charging and discharging process of the first bidirectional converter and the second bidirectional converter; Step 2: using a starting unit, according to the starting energy requirement of the mutual charging and discharging system unit, providing instantaneous large energy to start the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit; Step 3: Using the power supplement unit, through the power converter, to supplement the electric energy lost in the mutual charging and discharging process for the mutual charging and discharging system units with a stable DC voltage or AC voltage; Step 4: Using the monitoring unit, according to the aging requirements of the bidirectional conversion product to be aged, control the first bidirectional converter and the second bidirectional converter in the mutual charging and discharging system unit to charge or discharge respectively, so as to achieve the purpose of simulating power-on aging.

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