Power supply testing device

Abstract

The embodiment of the utility model discloses a power supply testing device which comprises at least one power supply aging test circuit, the power supply aging test circuit comprises a first bidirectional tested power supply, a second bidirectional tested power supply, a first bidirectional power supply and a second bidirectional power supply, and the first bidirectional tested power supply comprises a first end and a second end. The second bidirectional tested power supply comprises a third end and a fourth end, the first bidirectional power supply comprises a fifth end and a sixth end, and the second bidirectional power supply comprises a seventh end and an eighth end; the second end is electrically connected with the third end, the sixth end is electrically connected with the first end, the eighth end is electrically connected with the fourth end, and an alternating current power supply is connected to the fifth end or the seventh end. Therefore, the two-way aging test of the first two-way tested power supply and the second two-way tested power supply can be completed at the same time, and the aging test efficiency of the two-way power supply is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of power supply testing, and in particular to a power supply testing device. Background Art

[0002] A switching power supply is also called a switching power supply or a switching converter. It is a high-frequency power conversion device. As a type of power supply, a switching power supply can convert a voltage level into the voltage or current required by the user through different forms of architecture. The input of a switching power supply is mostly an AC power supply (such as a mains power supply) or a DC power supply, and the output is mostly a device that requires a DC power supply, such as a personal computer. The switching power supply converts the voltage and current between the two. In the related art, when performing an aging test on a bidirectional DC / DC power supply, only a unidirectional aging test method can be used, which has low test efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present application provides a power supply testing device, which aims to solve the technical problem of low efficiency of bidirectional DC / DC power supply aging testing in the prior art.

[0004] The present application provides a power supply testing device, which includes at least one power supply aging testing circuit, wherein the power supply aging testing circuit includes:

[0005] At least one group of bidirectional power supplies under test, the bidirectional power supplies under test comprising a first bidirectional power supply under test and a second bidirectional power supply under test, the first bidirectional power supply under test comprising a first end and a second end, the second bidirectional power supply under test comprising a third end and a fourth end, the second end being electrically connected to the third end;

[0006] At least one set of bidirectional power supplies, the bidirectional power supplies comprising a first bidirectional power supply and a second bidirectional power supply, the first bidirectional power supply comprising a fifth terminal and a sixth terminal, the second bidirectional power supply comprising a seventh terminal and an eighth terminal, the sixth terminal being electrically connected to the first terminal, and the eighth terminal being electrically connected to the fourth terminal;

[0007] Among them, when the first bidirectional power supply under test and the second bidirectional power supply under test are subjected to aging tests in sequence, the fifth end is connected to an AC power supply, and the DC power output by the sixth end is input through the first end and output through the fourth end; when the second bidirectional power supply under test and the first bidirectional power supply under test are subjected to aging tests in sequence, the seventh end is connected to an AC power supply, and the DC power output by the eighth end is input through the fourth end and output through the first end.

[0008] Furthermore, in the power supply testing device, the fifth terminal and the seventh terminal are simultaneously connected to the AC power supply to provide energy feedback to the first bidirectional power supply under test and the second bidirectional power supply under test in the bidirectional aging test.

[0009] Furthermore, in the power supply testing device, one group of the bidirectional power supplies is provided with six groups of the bidirectional power supplies to be tested.

[0010] Further, in the power supply test device, the power supply test device also includes a frame and at least one tested power supply support seat;

[0011] Wherein, the frame includes at least one first bearing part, and the tested power supply support seat is fixed on the first bearing part;

[0012] The tested power supply support seat includes a second bearing portion and a third bearing portion, the first bearing portion is used to bear the first bidirectional tested power supply, and the second bearing portion is used to bear the second bidirectional tested power supply.

[0013] Furthermore, in the power supply testing device, the frame body further includes a fourth bearing portion, a fifth bearing portion and two first vertical portions;

[0014] Among them, the two first vertical parts are respectively fixedly connected to the first bearing part, the fourth bearing part, and the fifth bearing part, the fourth bearing part is used to bear the first bidirectional power supply, and the fifth bearing part is used to bear the second bidirectional power supply.

[0015] Furthermore, in the power supply testing device, at least one first guide member is arranged between the two first vertical parts, the fourth bearing part and / or the fifth bearing part are fixedly connected to the guide member, and the first bidirectional power supply or the second bidirectional power supply moves on the corresponding bearing part through the first guide member.

[0016] Furthermore, in the power supply testing device, the first guide member includes two blocking members;

[0017] Wherein, the two blocking members are fixedly connected to the fourth bearing portion and are arranged on both sides of the first bidirectional power supply; or / and

[0018] The two blocking members are fixedly connected to the fifth bearing portion and are arranged on both sides of the second bidirectional power supply.

[0019] Furthermore, in the power supply testing device, the first guide member further includes two sliding members;

[0020] The two sliding members are arranged on the fourth bearing part and / or the fifth bearing part, and the first bidirectional power supply and / or the second bidirectional power supply slide in the frame through the two sliding members.

[0021] Furthermore, in the power supply test device, the tested power supply support seat further includes two second vertical portions;

[0022] The two second vertical parts are respectively fixedly connected to the second bearing part and the third bearing part, and the first bidirectional power supply under test and the second bidirectional power supply under test are arranged between the two second vertical parts.

[0023] Furthermore, in the power supply testing device, at least one of the second bearing part and the third bearing part is provided with a second guide member, and the first bidirectional power supply under test or the second bidirectional power supply under test moves on the corresponding bearing part through the second guide member.

[0024] Furthermore, in the power supply testing device, the second guide member includes two guide bars, which are fixed on the second bearing part and / or the third bearing part, and the first bidirectional power supply under test and / or the second bidirectional power supply under test moves between the two guide bars.

[0025] Furthermore, in the power supply testing device, the guide bar includes a sixth bearing portion and a third vertical portion;

[0026] The sixth bearing portion is fixedly connected to the third vertical portion, and the sixth bearing portion is used to bear the first bidirectional power supply under test and / or the second bidirectional power supply under test.

[0027] Furthermore, in the power supply testing device, a steering wheel is also provided at the bottom of the frame.

[0028] Further, in the power supply testing device, at least one of the first bidirectional power supply under test, the second bidirectional power supply under test, the first bidirectional power supply, and the second bidirectional power supply is provided with a push-pull member.

[0029] The power supply test device provided by the present application includes at least one power supply aging test circuit, the power supply aging test circuit includes a first bidirectional power supply under test, a second bidirectional power supply under test, a first bidirectional power supply and a second bidirectional power supply, the first bidirectional power supply under test is electrically connected to the second bidirectional power supply under test and the first bidirectional power supply respectively, and the second bidirectional power supply under test is electrically connected to the second bidirectional power supply, and then when the first bidirectional power supply under test and the second bidirectional power supply under test are subjected to bidirectional aging test, according to the bidirectional characteristics of the bidirectional power supply, it is only necessary to connect an AC power supply at one end of the first bidirectional power supply to sequentially perform a unidirectional aging test on the first bidirectional power supply under test and the second bidirectional power supply under test, or to connect an AC power supply at one end of the second bidirectional power supply to sequentially perform a unidirectional aging test on the second bidirectional power supply under test and the first bidirectional power supply under test, so that the bidirectional aging test of the first bidirectional power supply under test can be completed while the bidirectional aging test of the second bidirectional power supply under test is also completed, which greatly improves the aging test efficiency of the bidirectional power supply. In addition, the energy compensation of the bidirectional aging test can be performed by the first bidirectional power supply and the second bidirectional power supply, which reduces the power loss during the aging test and greatly reduces the aging test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A circuit block diagram of a power aging test circuit provided in an embodiment of the present application;

[0032] Figure 2 A circuit diagram of a first bidirectional power supply under test and / or a second bidirectional power supply under test provided in an embodiment of the present application;

[0033] Figure 3 A circuit block diagram of a first bidirectional power supply or / and a second bidirectional power supply provided in an embodiment of the present application;

[0034] Figure 4 A structural diagram of a power supply testing device provided in an embodiment of the present application;

[0035] Figure 5 A structural diagram of a frame provided in an embodiment of the present application;

[0036] Figure 6 Another structural diagram of the frame provided in the embodiment of the present application;

[0037] Figure 7 A structural diagram of a power supply support base under test provided in an embodiment of the present application;

[0038] Figure 8 Another structural diagram of the tested power supply support provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0041] It should also be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0042] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0043] As analyzed in the background technology of this application, the efficiency of the bidirectional aging test of the existing bidirectional power supply 110 is low and the cost is high. In order to solve the above technical problems, this application provides a power supply testing device.

[0044] See also Figure 1 and Figure 4 , Figure 1 A schematic block diagram of a power aging test circuit 100 provided in an embodiment of the present application; Figure 4 A structural diagram of a power supply testing device provided in an embodiment of the present application.

[0045] like Figure 1 and Figure 4 As shown, the present application provides a power supply testing device, which includes at least one power supply aging testing circuit 100, and the power supply aging testing circuit 100 includes:

[0046] At least one group of bidirectional power supplies under test 120, wherein the bidirectional power supplies under test 120 include a first bidirectional power supply under test 121 and a second bidirectional power supply under test 122, wherein the first bidirectional power supply under test 121 includes a first end and a second end, and the second bidirectional power supply under test 122 includes a third end and a fourth end, and the second end is electrically connected to the third end;

[0047] At least one set of bidirectional power supplies 110, the bidirectional power supplies 110 comprising a first bidirectional power supply 111 and a second bidirectional power supply 112, the first bidirectional power supply 111 comprising a fifth terminal and a sixth terminal, the second bidirectional power supply 112 comprising a seventh terminal and an eighth terminal, the sixth terminal being electrically connected to the first terminal, and the eighth terminal being electrically connected to the fourth terminal;

[0048] Among them, when the aging test is performed on the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 in turn, the fifth end is connected to the AC power supply 130, and the DC power output from the sixth end is input through the first end and output through the fourth end; when the aging test is performed on the second bidirectional power supply under test 122 and the first bidirectional power supply under test 121 in turn, the seventh end is connected to the AC power supply 130, and the DC power output from the eighth end is input through the fourth end and output through the first end.

[0049] In this embodiment, the output voltage of the first bidirectional power supply under test 121, the second bidirectional power supply under test 122, the first bidirectional power supply 111, and the second bidirectional power supply 112 will be dynamically adjusted following the change of the input voltage, and have an automatic fast mode switching direction, so that when the current direction of the first bidirectional power supply under test 121, the second bidirectional power supply under test 122, the first bidirectional power supply 111, and the second bidirectional power supply 112 changes, their respective input terminals and output terminals can be interchanged. That is, the current direction of the first bidirectional power supply under test 121, the second bidirectional power supply under test 122, the first bidirectional power supply 111, and the second bidirectional power supply 112 determines their respective input terminals and output terminals.

[0050] Specifically, when the first bidirectional power supply 121 and the second bidirectional power supply 122 are subjected to aging tests in sequence, the fifth end of the first bidirectional power supply 111 is used as an input end and connected to the AC power supply 130, and the first bidirectional power supply 111 converts the AC power supply 130 into a DC power supply. At this time, the sixth end of the first bidirectional power supply 111 is used as an output end, and the first end of the first bidirectional power supply 121 is used as an input end. The converted DC power supply can enter the first bidirectional power supply 121 from the sixth end to perform a unidirectional aging test on the first bidirectional power supply 121, and the conversion After the DC power supply enters the first bidirectional power supply under test 121 through the first end for DC voltage conversion, it can enter the second bidirectional power supply under test 122 through the second end of the first bidirectional power supply under test 121 and the third end of the second bidirectional power supply under test 122 to perform a unidirectional aging test on the second bidirectional power supply under test 122. Then the second bidirectional power supply under test 122 can convert the DC power supply after the DC voltage conversion into a DC voltage again and enter the second bidirectional power supply 112 through the fourth end of the second bidirectional power supply under test 122 and the eighth end of the second bidirectional power supply 112.

[0051] When the second bidirectional power supply 122 and the first bidirectional power supply 121 are subjected to aging tests in sequence, the seventh terminal of the second bidirectional power supply 112 is used as an input terminal and connected to the AC power supply 130. The second bidirectional power supply 112 converts the AC power supply 130 into a DC power supply. At this time, the eighth terminal of the second bidirectional power supply 112 is used as an output terminal, and the fourth terminal of the second bidirectional power supply 122 is used as an input terminal. The converted DC power supply can enter the second bidirectional power supply 122 from the fourth terminal to perform a unidirectional aging test on the second bidirectional power supply 122. At the same time, the converted DC power supply After the DC power supply enters the second bidirectional power supply under test 122 through the fourth end for DC voltage conversion, it can enter the first bidirectional power supply under test 121 through the third end of the second bidirectional power supply under test 122 and the second end of the first bidirectional power supply under test 121 to perform a unidirectional aging test on the first bidirectional power supply under test 121. At the same time, the first bidirectional power supply under test 121 can convert the DC power supply after the DC voltage conversion into a DC voltage again, and enter the first bidirectional power supply 111 through the first end of the first bidirectional power supply under test 121 and the sixth end of the first bidirectional power supply 111.

[0052] The first bidirectional power supply 121 and the second bidirectional power supply 122 mentioned in the present application can both be 15V isolated bidirectional DC / DC power supplies, but are not limited thereto. In other words, the first bidirectional power supply 121 and the second bidirectional power supply 122 can be of the same type or different types.

[0053] That is to say, the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 can both be bidirectional AC / DC power supplies, or both can be bidirectional DC / DC power supplies, or one of them can be a bidirectional AC / DC power supply and the other can be a bidirectional DC / DC power supply. They can be selected according to actual applications, and this application does not make any specific limitations.

[0054] For example, when the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 are both bidirectional AC / DC power supplies, then at this time, an additional bidirectional AC / DC power supply that needs to perform a bidirectional aging test can be added to the power supply test circuit, that is, the third bidirectional power supply under test. At this time, the AC end of the first bidirectional power supply under test 121 can be electrically connected to the AC end of the second bidirectional power supply under test 122, the DC end of the first bidirectional power supply under test 121 can be electrically connected to the DC end of the first bidirectional power supply 111, the AC end of the second bidirectional power supply under test 122 can be connected to the AC end of the third bidirectional power supply under test, and the DC end of the third bidirectional power supply under test can be connected to the DC end of the second bidirectional power supply 112.

[0055] When the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 are both bidirectional DC / DC power supplies, the DC end of the first bidirectional power supply 111 can be electrically connected to a DC end of the first bidirectional power supply under test 121, and the other DC end of the first bidirectional power supply under test 121 can be electrically connected to a DC end of the second bidirectional power supply under test 122, and the other DC end of the second bidirectional power supply under test 122 can be electrically connected to the DC end of the second bidirectional power supply 112.

[0056] When the first bidirectional power supply under test 121 is a bidirectional AC / DC power supply and the second bidirectional power supply under test 122 is a bidirectional DC / DC power supply, it is also necessary to add a bidirectional AC / DC power supply in the power supply test circuit, that is, the third bidirectional power supply under test. At this time, the DC end of the first bidirectional power supply under test 121 is electrically connected to the DC end of the first bidirectional power supply 111, the AC end of the first bidirectional power supply under test 121 is electrically connected to the AC end of the third bidirectional power supply under test, the DC end of the third bidirectional power supply under test is electrically connected to a DC end of the second bidirectional power supply under test 122, and the other DC end of the second bidirectional power supply under test 122 is electrically connected to the DC end of the second bidirectional power supply 112.

[0057] When the first bidirectional power supply under test 121 is a bidirectional DC / DC power supply and the second bidirectional power supply under test 122 is a bidirectional AC / DC power supply, then it is also necessary to add a bidirectional AC / DC power supply in the power supply test circuit, that is, the third bidirectional power supply under test. At this time, one DC end of the first bidirectional power supply under test 121 is electrically connected to the DC end of the first bidirectional power supply 111, the other DC end of the first bidirectional power supply under test 121 is electrically connected to the DC end of the third bidirectional power supply under test, the AC end of the third bidirectional power supply under test is electrically connected to the AC end of the second bidirectional power supply under test 122, and the DC end of the second bidirectional power supply under test 122 is electrically connected to the DC end of the second bidirectional power supply 112.

[0058] It should be noted that the above situation is realized when both the first bidirectional power supply 111 and the second bidirectional power supply 112 are bidirectional AC / DC power supplies, but is not limited to them. They can be selected according to actual applications and this application does not make specific limitations.

[0059] It should also be noted that while the present application performs bidirectional aging tests on the first bidirectional power supply 121 and the second bidirectional power supply 122, it can also perform bidirectional aging tests on the first bidirectional power supply 111 and the second bidirectional power supply 112. This can be selected based on actual needs and is not specifically limited in the present application.

[0060] In addition, it should be noted that the power supply test circuit provided in the present application not only performs a bidirectional aging test on a group of bidirectional power supplies 110 consisting of a first bidirectional power supply under test 121 and a second bidirectional power supply under test 122, but can also perform a bidirectional aging test on multiple groups of such bidirectional power supplies 110 at the same time, which can be achieved only when the power of the first bidirectional power supply 111 and the second bidirectional power supply 112 can be supported.

[0061] The power supply testing device provided in the present application includes at least one power supply aging test circuit 100, the power supply aging test circuit 100 includes a first bidirectional power supply to be tested 121, a second bidirectional power supply to be tested 122, a first bidirectional power supply 111 and a second bidirectional power supply 112, the first bidirectional power supply to be tested 121 is electrically connected to the second bidirectional power supply to be tested 122 and the first bidirectional power supply 111 respectively, and the second bidirectional power supply to be tested 122 is electrically connected to the second bidirectional power supply 112, and then when the bidirectional aging test is performed on the first bidirectional power supply to be tested 121 and the second bidirectional power supply to be tested 122, according to the bidirectional characteristics of the bidirectional power supply 110, it is only necessary to connect an AC power supply 130 at one end of the first bidirectional power supply 111 to sequentially test the first bidirectional power supply to be tested 121 and the second bidirectional power supply to be tested. The AC power source 122 is used for unidirectional aging test, or the AC power supply 130 is connected to one end of the second bidirectional power supply 112 to perform unidirectional aging test on the second bidirectional power supply 122 and the first bidirectional power supply 121 in turn, so that the bidirectional aging test of the first bidirectional power supply 121 can be completed while the bidirectional aging test of the second bidirectional power supply 122 is completed, which greatly improves the bidirectional aging test efficiency of the bidirectional power supply 110. At the same time, there is no need to make too many modifications and upgrades to the existing unidirectional power supply aging test platform. In addition, the present application can also perform energy compensation for the bidirectional aging test through the first bidirectional power supply 111 and the second bidirectional power supply 112, which reduces the power loss during the aging test and greatly reduces the aging test cost.

[0062] In some embodiments, the fifth terminal and the seventh terminal are simultaneously connected to the AC power supply 130 to provide energy feedback to the first bidirectional power supply 121 and the second bidirectional power supply 122 in the bidirectional aging test.

[0063] In this embodiment, the first bidirectional power supply 111 and the second bidirectional power supply 112 are both bidirectional AC / DC power supplies. When the first bidirectional power supply 121 and the second bidirectional power supply 122 are subjected to aging tests in sequence, the first bidirectional power supply 111 can provide direct current power to the first bidirectional power supply 121 to perform an aging test on the first bidirectional power supply 121, and the first bidirectional power supply 121 can provide direct current power to the second bidirectional power supply 122 to perform an aging test on the second bidirectional power supply 122. At this time, the direct current output by the second two-wire power supply 112 can enter the second bidirectional power supply 112 through the eighth terminal of the second bidirectional power supply 112, and the second bidirectional power supply 112 can convert it into alternating current and feed it back to the power grid. , and thus the power supply aging test can be compensated; when the second bidirectional power supply under test 122 and the first bidirectional power supply under test 121 are subjected to aging tests in sequence, the second bidirectional power supply 112 can provide DC power to the second bidirectional power supply under test 122 to perform an aging test on the second bidirectional power supply under test 122, and the second bidirectional power supply under test 122 can provide DC power to the first bidirectional power supply under test 121 to perform an aging test on the first bidirectional power supply under test 121. At this time, the DC power output by the first bidirectional power supply under test 121 can enter the first bidirectional power supply 111 through the fifth terminal of the first bidirectional power supply 111, and the first bidirectional power supply 111 can convert it into AC power and feed it back to the power grid, and thus the power supply aging test can be compensated.

[0064] That is to say, when the bidirectional aging test is performed on the first bidirectional power supply 121 and the second bidirectional power supply 122, the present application performs grid compensation through the first bidirectional power supply 111 and the second bidirectional power supply 112, thereby realizing the recycling of electricity and greatly reducing the energy consumption required for the bidirectional aging test of the bidirectional power supply 110, thereby reducing the power supply testing cost.

[0065] For example, in this embodiment, the first bidirectional power supply 121 under test and the second bidirectional power supply 122 under test can both be 15V isolated bidirectional DC / DC power supplies. The first bidirectional power supply 111 and the second bidirectional power supply 112 are connected to 380Vac, that is, a three-phase AC power supply. When aging is performed from left to right, the first bidirectional power supply 111 can output 581Vdc to supply power to the first bidirectional power supply 121 under test. The first bidirectional power supply 121 under test can automatically adjust a 15.9V DC power supply to supply power to the second bidirectional power supply 122 under test. The second bidirectional power supply 122 under test can then output 570Vdc. To the second bidirectional power supply 112, and is inverted into 380Vac by the second bidirectional power supply 112 for grid connection to realize power recovery; when aging is performed from right to left, the second bidirectional power supply 112 can output 581Vdc to power the second bidirectional power supply 122 under test, and the second bidirectional power supply 122 under test can automatically adjust a 15.9V DC power supply to power the first bidirectional power supply 121 under test, and the first bidirectional power supply 121 under test can then output 570Vdc to the first bidirectional power supply 111, and is inverted into 380Vac by the first bidirectional power supply 111 for grid connection to realize power recovery.

[0066] In some embodiments, one group of the bidirectional power supplies 110 is provided with six groups of the bidirectional tested power supplies 120 correspondingly.

[0067] In this embodiment, the power of the first bidirectional power supply 111 is at least six times the power of the first bidirectional power supply under test 121, and the power of the second bidirectional power supply 112 is at least six times the power of the second bidirectional power supply under test 122. In other words, when the power of the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 is the power of the bidirectional power supply 110 of 4 kW, the power of the first bidirectional power supply 111 and the second bidirectional power supply 112 must be above 24 kW.

[0068] At the same time, the present application takes into account the loss of conversion efficiency and the need to retain redundancy, so the power of the first bidirectional power supply 111 and the second bidirectional power supply 112 of the present application can be a 30kW bidirectional power supply 110.

[0069] In some embodiments, Figure 2 As shown, the first bidirectional power supply under test 121 and / or the second bidirectional power supply under test 122 can be a bidirectional resonant converter, which includes a transformer T, a first inductor L1, a second inductor L2, a third inductor L3, a switch tube Q1, a switch tube Q2, a switch tube Q3, a switch tube Q4, a switch tube Q5, a switch tube Q6, a switch tube Q7, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6 and a capacitor C7.

[0070] Among them, the first inductor L1, the second inductor L2, the switch tube Q1, the switch tube Q2, the switch tube Q3, the switch tube Q4, the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4 and the capacitor C5 are arranged on the primary side of the transformer T, the third inductor L3, the switch tube Q5, the switch tube Q6, the switch tube Q7, the capacitor C6 and the capacitor C7 are arranged on the secondary side of the transformer T, the first inductor L1 is a resonant inductor, the second inductor L2 is an excitation inductor, the capacitor C1 is a resonant capacitor, the capacitor C2 is arranged between the source and drain of the switch tube Q1, the capacitor C3 is arranged between the source and drain of the switch tube Q2, the capacitor C4 is arranged between the source and drain of the switch tube Q3, the capacitor C5 is arranged between the source and drain of the switch tube Q4, one end of the capacitor C6 is electrically connected to one end of the third inductor L3, the other end of the capacitor C6 is grounded, one end of the capacitor C7 is electrically connected to the other end of the third inductor L3, the other end of the capacitor C7 is grounded, and the two connection terminals V 0 +、V 0 - can be used as the first end of the first bidirectional power supply under test 121 or the third end of the second bidirectional power supply under test 122, and the two connection terminals V 1 +、V 1 - can be used as the second terminal of the first bidirectional power supply under test 121 or the fourth terminal of the second bidirectional power supply under test 122.

[0071] In addition, in this embodiment, when the first end of the first bidirectional power supply under test 121 is used as the input end, the right side of the bidirectional resonant converter performs switching and the left side performs rectification; when the second end of the first bidirectional power supply under test 121 is used as the input end, the left side of the bidirectional resonant converter performs switching and the left side performs rectification. Similarly, the working principle of the second bidirectional power supply under test 122 is the same as that of the first bidirectional power supply under test 121, which will not be described in detail here.

[0072] In some embodiments, Figure 3 As shown, the first bidirectional power supply 111 and / or the second bidirectional power supply 112 also include a first EMI suppression circuit 1101, a first power factor correction circuit 1102, a first bus capacitor 1103, a bidirectional full-bridge resonant circuit 1104, a buck-boost circuit 1105 and a second EMI suppression circuit 1106; wherein, one end of the first EMI suppression circuit 1101 is electrically connected to the first power factor correction circuit 1102, and the other end is electrically connected to the fifth end of the first bidirectional power supply 111 or the seventh end of the second bidirectional power supply 112; the first power factor correction circuit 1102 is electrically connected to the first bus capacitor 1103, the first bus capacitor 1103 is electrically connected to the bidirectional full-bridge resonant circuit 1104, the bidirectional full-bridge resonant circuit 1104 is electrically connected to the buck-boost circuit 1105, the buck-boost circuit 1105 is electrically connected to the second EMI suppression circuit 1106, and the second EMI suppression circuit 1106 is electrically connected to the sixth end of the first bidirectional power supply 111 or the eighth end of the second bidirectional power supply 112.

[0073] In this embodiment, the first EMI suppression circuit 1101 is provided between the fifth terminal of the first bidirectional power supply 111 or the seventh terminal of the second bidirectional power supply 112 and the first power factor correction circuit 1102, that is, one end of the first EMI suppression circuit 1101 is electrically connected to the fifth terminal of the first bidirectional power supply 111 or the seventh terminal of the second bidirectional power supply 112, and the fifth terminal or the seventh terminal is provided with three connection terminals L 1 , L 2 and L 3 The other end of the first EMI suppression circuit 1101 is electrically connected to the first power factor correction circuit 1102, wherein the first EMI suppression circuit 1101 can filter out the noise at the three-phase AC end and suppress high-frequency interference.

[0074] The first power factor correction circuit 1102 is arranged between the first EMI suppression circuit 1101 and the first bus capacitor 1103, which is a three-phase power factor correction circuit and can be regarded as three single-phase power factor correction circuits, each single-phase power factor correction circuit is equivalent to being composed of two Boost circuits, which can work alternately in the positive and negative half cycles of the AC voltage. The first bus capacitor 1103 includes capacitor C8 and capacitor C9, which serve as positive and negative bus capacitors. At the same time, capacitor C8 and capacitor C9 are connected in series to form three connection points, which are electrically connected to the first power factor correction circuit 1102 respectively. Among them, the first power factor correction circuit 1102 and the first bus capacitor 1103 can form a bidirectional AC / DC converter, which can then perform bidirectional conversion and energy exchange between the three-phase AC power supply and the internal DC power supply.

[0075] The bidirectional full-bridge resonant circuit 1104 is provided between the first bus capacitor 1103 and the buck-boost circuit 1105, and can be used as a bidirectional DC / DC converter to achieve bidirectional energy exchange. At the same time, a transformer is provided in the bidirectional full-bridge resonant circuit 1104, so that the DC power supply on both sides of the transformer can be isolated. At the same time, the buck-boost circuit 1105 is provided between the bidirectional full-bridge resonant circuit 1104 and the second EMI suppression circuit 1106, and can be used as a boost / buck DC / DC converter to achieve DC voltage conversion.

[0076] The second EMI suppression circuit 1106 is disposed between the second end of the bidirectional power supply 110 and the buck-boost circuit 1105 , and can suppress high-frequency interference of the DC converted by the buck-boost circuit 1105 , as well as high-frequency interference of the DC inputted from the second end.

[0077] Furthermore, in some embodiments, Figure 3As shown, the bidirectional full-bridge resonant circuit 1104 includes a first full-bridge resonator 11041 and a second full-bridge resonator 11042, and the buck-boost circuit 1105 includes a first buck-boost sub-circuit 11051 and a second buck-boost sub-circuit 11052; wherein, the first full-bridge resonator 11041 and the first buck-boost sub-circuit 11051 are connected in series, and the second full-bridge resonator 11042 and the second buck-boost sub-circuit 11052 are connected in series and then connected in parallel, and are arranged between the first bus capacitor 1103 and the second EMI suppression circuit 1106.

[0078] In this embodiment, the bidirectional full-bridge resonant circuit 1104 is composed of a first full-bridge resonator 11041 and a second full-bridge resonator 11042 in parallel, and is arranged between the buck-boost circuit 1105 and the first bus capacitor 1103. The first full-bridge resonator 11041 and the second full-bridge resonator 11042 are both composed of four switching tubes, a resonant capacitor, a resonant inductor, a transformer excitation inductor, a transformer and a rectifier.

[0079] The buck-boost circuit 1105 is composed of a first buck-boost sub-circuit 11051 and a second buck-boost sub-circuit 11052 in parallel, and is arranged between the bidirectional full-bridge resonant circuit 1104 and the second EMI suppression circuit 1106. The first buck-boost sub-circuit 11051 and the second buck-boost sub-circuit 11052 can be any one of a Boost circuit and a Buck circuit, which can be selected according to actual applications, and this application does not make specific limitations.

[0080] Furthermore, in some embodiments, Figure 3 As shown, the bidirectional power supply 110 also includes a switch circuit 1107; wherein one end of the switch circuit 1107 is electrically connected to the second EMI suppression circuit 1106, and the other end of the second switch is electrically connected to the sixth end of the first bidirectional power supply 111 or the eighth end of the second bidirectional power supply 112.

[0081] In this embodiment, the two connection terminals provided at the sixth end or the eighth end are respectively V 2 + and V 2 -, the switch circuit 1107 is provided at the connection terminal V 2 + and the second EMI suppression circuit 1106. By setting a switch circuit 1107 between the second EMI suppression circuit 1106 and the second end of the bidirectional power supply 110, the current flow between the first end and the second end of the bidirectional power supply 110 can be guided by the switch circuit 1107. When the switch circuit 1107 is in the disconnected state, the bidirectional power supply 110 can be used as a DC source; when the switch circuit 1107 is in the on state, the bidirectional power supply 110 can be used as a load.

[0082] Furthermore, in some embodiments, Figure 3As shown, the switch circuit 1107 includes a first switch S1 and a diode D1; wherein one end of the first switch S1 is electrically connected to the anode of the diode D1 to form a connection point, the other end of the first switch S1 is electrically connected to the cathode of the diode D1 to form another connection point, one of the two connection points is electrically connected to the second EMI suppression circuit 1106, and the other of the two connection points is electrically connected to the sixth end of the first bidirectional power supply 111 or the eighth end of the second bidirectional power supply 112.

[0083] In this embodiment, the switch circuit 1107 is formed by a first switch S1 and a diode D1 in parallel. When the bidirectional power supply 110 is used as a DC source, the first switch S1 is disconnected, and the DC converted by the bidirectional power supply 110 can be input to the second end for output through the diode D1; when the bidirectional power supply 110 is used as a load, the first switch S1 is turned on, and the diode D1 plays a role in preventing reverse connection.

[0084] In some embodiments, Figure 4 , Figure 5 as well as Figure 6 As shown, the power supply testing device also includes a frame 200 and at least one tested power supply support seat 300; wherein, the frame 200 includes at least one first bearing part 201, and the tested power supply support seat 300 is fixed on the first bearing part 201; the tested power supply support seat 300 includes a second bearing part 301 and a third bearing part 302, the first bearing part 201 is used to support the first bidirectional tested power supply 121, and the second bearing part 301 is used to support the second bidirectional tested power supply 122.

[0085] In this embodiment, when performing a bidirectional aging test, the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 are both placed inside the frame 200 through the power supply support base 300 under test. Multiple power supply support bases 300 under test can be placed inside the frame 200, thereby realizing bidirectional aging tests of multiple groups of bidirectional power supplies under test 120 on a test platform with a relatively simple structure, which not only improves the test efficiency of the bidirectional power supply 110, but also reduces the test cost of the bidirectional power supply 110.

[0086] In some embodiments, Figure 4 and Figure 5 As shown, the frame 200 also includes a fourth bearing part 202, a fifth bearing part 203 and two first vertical parts 204; wherein, the two first vertical parts 204 are respectively fixedly connected to the first bearing part 201, the fourth bearing part 202, and the fifth bearing part 203, the fourth bearing part 202 is used to carry the first bidirectional power supply 111, and the fifth bearing part 203 is used to carry the second bidirectional power supply 112.

[0087] In this embodiment, the first bidirectional power supply 111 and the second bidirectional power supply 112 are both arranged inside the frame 200, and the first bearing part 201, the fourth bearing part 202 and the fifth bearing part 203 are fixedly connected by two first vertical parts 204, so that the power supply support seat 300 under test, the first bidirectional power supply 111 and the second bidirectional power supply 112 can be placed from top to bottom, so as to facilitate the first bidirectional power supply 111 and the second bidirectional power supply 112 to be connected to the three-phase AC power supply, and also facilitate the connection between the first bidirectional power supply 111 and the first bidirectional power supply under test 121 and the connection between the second bidirectional power supply 112 and the second bidirectional power supply 112.

[0088] Further, in some embodiments, at least one first guide member is arranged between the two first vertical portions 204, the fourth bearing portion 202 and / or the fifth bearing portion 203 are fixedly connected to the guide member, and the first bidirectional power supply 111 or the second bidirectional power supply 112 moves on the corresponding bearing portion through the first guide member.

[0089] In this embodiment, the first bidirectional power supply 111 and the second bidirectional power supply 112 are relatively large in size and are relatively heavy. The present application provides a first guide member on the fourth bearing portion 202 and the fifth bearing portion 203 to facilitate the tester to easily move the first bidirectional power supply 111 and the second bidirectional power supply 112, thereby improving the testing efficiency of the bidirectional power supply 110.

[0090] Furthermore, in some embodiments, Figure 6 As shown, the first guide member includes two retaining members 2051; wherein the two retaining members 2051 are fixedly connected to the fourth bearing portion 202 and are disposed on both sides of the first bidirectional power supply 111; or / and

[0091] The two blocking members 2051 are fixedly connected to the fifth bearing portion 203 and are disposed on two sides of the second bidirectional power supply 112 .

[0092] Specifically, in a preferred embodiment of the present application, a first guide member is respectively provided on the fourth bearing portion 202 and the fifth bearing portion 203 , and two stop members 2051 are provided in the first guide member. The two stop members 2051 are provided on both sides of the bidirectional power supply 110 .

[0093] Further, in one embodiment, if Figure 6 As shown, the first guide member also includes two sliding members 2052; wherein, the two sliding members 2052 are arranged on the fourth bearing part 202 and / or the fifth bearing part 203, and the first bidirectional power supply 111 and / or the second bidirectional power supply 112 slide in the frame 200 through the two sliding members 2052.

[0094] Specifically, the sliding member 2052 can be composed of multiple wheels, and the first bidirectional power supply 111 and the second bidirectional power supply 112 can move quickly on the sliding member 2052, so that the tester can easily move the first bidirectional power supply 111 and the second bidirectional power supply 112, thereby improving the testing efficiency of the bidirectional power supply 110.

[0095] In some embodiments, Figure 7 and Figure 8 As shown, the tested power supply support seat 300 also includes two second vertical parts 303; wherein, the two second vertical parts 303 are respectively fixedly connected to the second bearing part 301 and the third bearing part 302, and the first bidirectional tested power supply 121 and the second bidirectional tested power supply 122 are arranged between the two second vertical parts 303.

[0096] In this embodiment, the two second vertical portions 303 are fixedly connected to the second bearing portion 301 and the third bearing portion 302, so that the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 can be placed from top to bottom, thereby facilitating the connection between the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 through the wiring terminal 400, and also facilitating the first bidirectional power supply 111 and the second bidirectional power supply 112 to carry multiple groups of bidirectional power supplies under test 120, thereby improving the test efficiency of the bidirectional aging of the bidirectional power supply 110.

[0097] In some embodiments, when the first bidirectional power supply 111 is loaded with 6 first bidirectional power supplies under test 121, four terminals can be set between the first bidirectional power supply 111 and the first bidirectional power supply under test 121, two of which can be short-circuited together as positive poles, and the other two can be short-circuited together as negative poles, and one terminal can be divided into three wires.

[0098] In some embodiments, Figure 8 As shown, at least one of the second bearing part 301 and the third bearing part 302 is provided with a second guide member, and the first bidirectional power supply under test 121 or the second bidirectional power supply under test 122 moves on the corresponding bearing part through the second guide member.

[0099] Specifically, the present application provides a second guide member in each of the second bearing portion 301 and the third bearing portion 302, which can also enable the tester to easily move the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122, thereby improving the testing efficiency of the bidirectional power supply under test 120.

[0100] Furthermore, in some embodiments, Figure 8As shown, the second guide member includes two guide bars 304 , and the guide bars 304 are fixed on the second bearing portion 301 and / or the third bearing portion 302 , and the first bidirectional power supply under test 121 and / or the second bidirectional power supply under test 122 moves between the two guide bars 304 .

[0101] Preferably, two guide bars 304 are disposed on the second bearing portion 301 and the third bearing portion 302 , and the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 can move between the two guide bars 304 .

[0102] Continue reading Figure 8 The guide bar 304 includes a sixth bearing portion 3042 and a third vertical portion 3041 , the sixth bearing portion 3042 is fixedly connected to the third vertical portion 3041 , and the sixth bearing portion 3042 is used to bear the first bidirectional power supply under test 121 and / or the second bidirectional power supply under test 122 .

[0103] In this embodiment, the two guide bars 304 are both configured as L-shaped guide bars 304 , which can facilitate the movement of the first bidirectional power supply 121 and the second bidirectional power supply 122 on the two guide bars 304 , thereby improving the test efficiency of the bidirectional power supply 120 .

[0104] In some embodiments, Figure 4 , Figure 5 as well as Figure 6 As shown, the bottom of the frame 200 is also provided with a steering wheel 500. Specifically, by providing four steering wheels 500 at the bottom of the frame 200, the power supply test device can be conveniently moved.

[0105] In some embodiments, Figure 4 , Figure 5 as well as Figure 6 As shown, at least one of the first bidirectional power supply under test 121 , the second bidirectional power supply under test 122 , the first bidirectional power supply 111 , and the second bidirectional power supply 112 is provided with a push-pull member 600 .

[0106] In this embodiment, the push-pull member 600 can be a push-pull handle. Two push-pull handles can be set on the first bidirectional power supply 111 and the second bidirectional power supply 112 respectively. One push-pull handle can be set on the first bidirectional power supply under test 121 and the second bidirectional power supply under test 122 respectively.

[0107] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A power supply testing device, characterized in that: The invention comprises at least one power supply aging test circuit, wherein the power supply aging test circuit comprises: At least one group of bidirectional power supplies under test, the bidirectional power supplies under test comprising a first bidirectional power supply under test and a second bidirectional power supply under test, the first bidirectional power supply under test comprising a first end and a second end, the second bidirectional power supply under test comprising a third end and a fourth end, the second end being electrically connected to the third end; At least one set of bidirectional power supplies, the bidirectional power supplies comprising a first bidirectional power supply and a second bidirectional power supply, the first bidirectional power supply comprising a fifth terminal and a sixth terminal, the second bidirectional power supply comprising a seventh terminal and an eighth terminal, the sixth terminal being electrically connected to the first terminal, and the eighth terminal being electrically connected to the fourth terminal; Among them, when the first bidirectional power supply under test and the second bidirectional power supply under test are subjected to aging tests in sequence, the fifth end is connected to an AC power supply, and the DC power output by the sixth end is input through the first end and output through the fourth end; when the second bidirectional power supply under test and the first bidirectional power supply under test are subjected to aging tests in sequence, the seventh end is connected to an AC power supply, and the DC power output by the eighth end is input through the fourth end and output through the first end.

2. The power supply testing device according to claim 1, characterized in that: The fifth end and the seventh end are connected to the AC power supply at the same time to provide energy feedback to the first bidirectional power supply under test and the second bidirectional power supply under test in the bidirectional aging test.

3. The power supply testing device according to claim 1, characterized in that: One group of the bidirectional power supplies is correspondingly provided with six groups of the bidirectional tested power supplies.

4. The power supply testing device according to any one of claims 1 to 3, characterized in that: The power supply testing device also includes a frame and at least one tested power supply support seat; Wherein, the frame includes at least one first bearing part, and the tested power supply support seat is fixed on the first bearing part; The tested power supply support seat includes a second bearing portion and a third bearing portion, the first bearing portion is used to bear the first bidirectional tested power supply, and the second bearing portion is used to bear the second bidirectional tested power supply.

5. The power supply testing device according to claim 4, characterized in that: The frame also includes a fourth bearing portion, a fifth bearing portion and two first vertical portions; Among them, the two first vertical parts are respectively fixedly connected to the first bearing part, the fourth bearing part, and the fifth bearing part, the fourth bearing part is used to bear the first bidirectional power supply, and the fifth bearing part is used to bear the second bidirectional power supply.

6. The power supply testing device according to claim 5, characterized in that: At least one first guide member is arranged between the two first vertical parts, the fourth bearing part and / or the fifth bearing part are fixedly connected to the guide member, and the first bidirectional power supply or the second bidirectional power supply moves on the corresponding bearing part through the first guide member.

7. The power supply testing device according to claim 6, characterized in that: The first guide member includes two blocking members; Wherein, the two blocking members are fixedly connected to the fourth bearing portion and are arranged on both sides of the first bidirectional power supply; or / and The two blocking members are fixedly connected to the fifth bearing portion and are arranged on both sides of the second bidirectional power supply.

8. The power supply testing device according to claim 6, characterized in that: The first guide member further comprises two sliding members; The two sliding members are arranged on the fourth bearing part and / or the fifth bearing part, and the first bidirectional power supply and / or the second bidirectional power supply slide in the frame through the two sliding members.

9. The power supply testing device according to claim 4, characterized in that: The tested power supply support seat also includes two second vertical parts; The two second vertical parts are respectively fixedly connected to the second bearing part and the third bearing part, and the first bidirectional power supply under test and the second bidirectional power supply under test are arranged between the two second vertical parts.

10. The power supply testing device according to claim 4, characterized in that: At least one of the second bearing portion and the third bearing portion is provided with a second guide member, and the first bidirectional power supply under test or the second bidirectional power supply under test moves on the corresponding bearing portion through the second guide member.

11. The power supply testing device according to claim 10, characterized in that: The second guide member includes two guide bars, and the guide bars are fixed on the second bearing portion and / or the third bearing portion. The first bidirectional power supply under test and / or the second bidirectional power supply under test moves between the two guide bars.

12. The power supply testing device according to claim 11, characterized in that: The guide bar comprises a sixth bearing portion and a third vertical portion; The sixth bearing portion is fixedly connected to the third vertical portion, and the sixth bearing portion is used to bear the first bidirectional power supply under test and / or the second bidirectional power supply under test.

13. The power supply testing device according to claim 4, characterized in that: The bottom of the frame is also provided with a steering wheel.

14. The power supply testing device according to claim 1, characterized in that: At least one of the first bidirectional power supply under test, the second bidirectional power supply under test, the first bidirectional power supply, and the second bidirectional power supply is provided with a push-pull member.

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