Charging pile aging test circuit

Abstract

The embodiment of the invention discloses a charging pile aging test circuit, and relates to the technical field of aging test, and the charging pile aging test circuit comprises a power supply module, a plurality of charging piles, and a plurality of first load modules. The first load module is connected with all the charging piles. The power supply module is connected with all the first load modules and all the charging piles. Original electric power resources are fully utilized, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of aging testing, and in particular to a charging stack aging testing circuit. Background Art

[0002] With the rapid development of the electric vehicle industry, aging testing is essential to ensure the performance of charging equipment, especially in the face of growing market demand and technological upgrading. Aging testing can not only simulate long-term equipment use, but also predict the life and performance degradation of the charging pile, thereby ensuring the safety and satisfaction of electric vehicle users. Therefore, a charging pile aging test system circuit was invented and applied to charging pile aging test equipment. However, traditional charging pile aging test methods often lack flexibility and efficiency, and are difficult to adapt to changing test requirements and dynamic load adjustments. Summary of the invention

[0003] The technical problem to be solved by the embodiments of the present invention is that the traditional charging stack aging test method has low efficiency and large energy loss.

[0004] In order to solve the above problems, the embodiment of the present invention discloses a charging stack aging test circuit, which fully utilizes the original power resources and achieves energy saving effect.

[0005] The present invention provides a charging stack aging test circuit, which includes a power supply module, multiple charging stacks and multiple first load modules; the first load modules are respectively connected to all the charging stacks; the power supply module is respectively connected to all the first load modules and all the charging stacks.

[0006] A further technical solution is that it also includes a first switch, which is arranged in a circuit connecting the first load module and the charging stack.

[0007] A further technical solution is that it also includes a second switch, which is arranged in the circuit connecting the power supply module and the first load module.

[0008] A further technical solution is that it also includes a controller, which is connected to the first switch and the second switch respectively.

[0009] A further technical solution is that the first load module is provided with a plurality of first load units connected in parallel.

[0010] A further technical solution is that it also includes a second load module, a plurality of the second load modules are connected in parallel to form a combined module, and the combined module is respectively connected to all the charging stacks and the power supply modules.

[0011] A further technical solution is that it also includes a third switch, and the third switch is arranged in the circuit connecting the combination module and the charging stack.

[0012] A further technical solution is that the second load module is provided with a plurality of second load units connected in parallel.

[0013] A further technical solution is that the charging stack is a DC power supply module.

[0014] A further technical solution is that the power supply module is an AC power supply module.

[0015] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include: The charging stack aging test can save more than 90% of electricity in this circuit, realize the matrix distribution of the circuit, and can flexibly switch the load according to actual requirements to meet the diversified aging test needs of the charging stack power, saving the cost of purchasing equipment in various power ranges, and also saving the space occupied by multiple equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 A structural block diagram of a charging stack aging test circuit provided by an embodiment of the present invention; Figure 2 A charging stack aging test circuit diagram provided by an embodiment of the present invention.

[0018] Reference numerals Power supply module 1 , charging stack 2 , first load module 3 , first switch 41 , second switch 42 , controller 5 , first load unit 31 , second load module 6 , combination module 61 , third switch 43 , second load unit 62 . DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] 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.

[0021] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include plural forms.

[0022] See also Figure 1-2 The embodiment of the present invention provides a charging stack 2 aging test circuit. The charging stack 2 aging test circuit includes a power supply module 1, multiple charging stacks 2 and multiple first load modules 3; the first load modules 3 are respectively connected to all the charging stacks 2; the power supply module 1 is respectively connected to all the first load modules 3 and all the charging stacks 2. The specific description of each component is as follows: In this embodiment, the first load module 3 includes multiple 15KW bidirectional sources, which are used to simulate the battery of the car in the aging test. The 15KW bidirectional source is an electronic device that can input AC and output DC after inversion; it can also input DC and output AC after inversion. The charging stack 2 (gun) outputs DC voltage to the 15KW bidirectional source, which outputs AC after inversion and is connected to the power grid of the AC power supply module 1 of the charging stack 2. Since the 15KW bidirectional source is a feedback load with an efficiency of more than 90%, more than 90% of the power is fed back to the AC input end of the charging stack 2. Only less than 10% of the power needs to be supplemented to meet the power required for the 100% power aging test of the product. Therefore, the aging test of the charging stack 2 can save more than 90% of the power in this circuit.

[0023] The first load module 3 is respectively connected to all the charging stacks 2; the power supply module 1 is respectively connected to all the first load modules 3 and all the charging stacks 2, realizing a matrix distribution of the circuit, and can flexibly switch the load according to actual requirements, meeting the aging test requirements of the charging stack 2 with diversified power, saving the cost of purchasing equipment of various power ranges, and also saving the space occupied by multiple equipment.

[0024] Continue to see Figure 1-2 In this embodiment, it also includes a first switch 41, which is arranged in the circuit connecting the first load module 3 and the charging stack 2.

[0025] Specifically, the first switch 41 includes a contactor. In this embodiment, the quantity relationship of the first switch 41, the charging stack 2, and the first load module 3 is: Z1=C*N1, Z1 is the number of the first switch 41, C is the number of the charging stack 2, and N1 is the number of the first load module 3. In one embodiment, the auxiliary contact of the contactor is connected to the input IO point of the PLC to determine the contactor's pull-in state. Pull-in indicates that this load is in use, and disconnection indicates that this load is idle. The PLC will feed back this information to the host computer, and the host computer can determine the idle state based on this information.

[0026] Furthermore, it also includes a second switch 42 , which is arranged in a line connecting the power supply module 1 and the first load module 3 .

[0027] Specifically, the second switch 42 includes a contactor. In this embodiment, the number relationship between the second switch 42, the first load module 3 and the second load module 6 is: Z2=N1+N2, Z2 is the number of the second switch 42, N1 is the number of the first load module 3, and N2 is the number of the second load module 6. In one embodiment, the auxiliary contact of the contactor is connected to the input IO point of the PLC to determine the contactor's pull-in state. Pull-in indicates that this load is in use, and disconnection indicates that this load is idle. The PLC will feed back this information to the host computer, and the host computer can determine the idle state based on this information.

[0028] Furthermore, it also includes a controller 5, and the controller 5 is connected to the first switch 41 and the second switch 42 respectively.

[0029] Specifically, the controller 5 includes a PLC, and the auxiliary contacts of the contactor are connected to the input IO points of the PLC to determine the contactor's energized state. Energized means that this load is in use, and disconnected means that this load is idle. The PLC will feed back this information to the host computer, and the host computer can determine the idle state based on this information.

[0030] Furthermore, the first load module 3 is provided with a plurality of first load units 31 connected in parallel.

[0031] Specifically, the first load unit 31 is a 15KW bidirectional source. In this embodiment, the first load module 3 includes three first load units 31 connected in parallel.

[0032] Furthermore, it also includes a second load module 6 , and a plurality of the second load modules 6 are connected in parallel to form a combination module 61 , and the combination module 61 is respectively connected to all the charging stacks 2 and the power supply module 1 .

[0033] Furthermore, a third switch 43 is included, and the third switch 43 is arranged in the circuit connecting the combination module 61 and the charging stack 2 .

[0034] Specifically, the third switch 43 includes a contactor. In this embodiment, the combination module 61 is formed by two second load modules 6 in parallel. The quantity relationship between the third switch 43, the charging stack 2, and the combination module 61 is: Z3=C*N3, Z3 is the number of third switches 43, C is the number of charging stacks 2, and N3 is the number of combination modules 61.

[0035] Furthermore, the second load module 6 is provided with a plurality of second load units 62 connected in parallel.

[0036] Specifically, the second load unit 62 is a 15KW bidirectional source. In this embodiment, the second load module 6 includes three second load units 62 connected in parallel.

[0037] Furthermore, the charging stack 2 is a DC power supply module 1 .

[0038] Specifically, the charging stack 2 is a DC power supply module 1 , which, in this embodiment, is used to output a DC voltage to supply power to the first load unit 31 and / or the second load unit 62 .

[0039] Furthermore, the power supply module 1 is an AC power supply module 1 .

[0040] Specifically, the output end of the first load unit 31 and / or the second load unit 62 is connected to the power supply module 1. The first load unit 31 and / or the second load unit 62 output AC after inversion and are connected to the power grid of the power supply module 1. In this embodiment, the first load unit 31 and the second load unit 62 are both 15KW bidirectional sources. The 15KW bidirectional source is a feedback load with an efficiency of more than 90%. More than 90% of the power is fed back to the AC input end of the charging stack 2. Only less than 10% of the power is supplemented by the power supply module 1 to meet the power required for the aging test of the product with 100% power. Therefore, the aging test of the charging stack 2 can save more than 90% of power in this circuit.

[0041] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0046] The above is a specific embodiment of the present invention, but the protection scope of the present invention 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 by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A charging stack aging test circuit, characterized in that: It includes a power supply module, a plurality of charging stacks and a plurality of first load modules; The first load modules are respectively connected to all the charging stacks; The power supply module is connected to all the first load modules and all the charging stacks respectively.

2. The charging stack aging test circuit according to claim 1, characterized in that: It also includes a first switch, which is arranged in a line connecting the first load module and the charging stack.

3. The charging stack aging test circuit according to claim 2, characterized in that: It also includes a second switch, which is arranged in a line connecting the power supply module and the first load module.

4. The charging stack aging test circuit according to claim 3, characterized in that: A controller is also included, and the controller is connected to the first switch and the second switch respectively.

5. The charging stack aging test circuit according to claim 1, characterized in that: The first load module is provided with a plurality of first load units connected in parallel.

6. The charging stack aging test circuit according to claim 1, characterized in that: It also includes a second load module. A plurality of the second load modules are connected in parallel to form a combined module. The combined module is respectively connected to all the charging stacks and the power supply modules.

7. The charging stack aging test circuit according to claim 6, characterized in that: It also includes a third switch, which is arranged in the circuit connecting the combination module and the charging stack.

8. The charging stack aging test circuit according to claim 6, characterized in that: The second load module is provided with a plurality of second load units connected in parallel.

9. The charging stack aging test circuit according to claim 1, characterized in that: The charging stack is a DC power supply module.

10. The charging stack aging test circuit according to claim 1, characterized in that: The power supply module is an AC power supply module.

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