Power supply system of temperature adjusting assembly and cabinet

Abstract

The utility model discloses a power supply system of a temperature adjusting assembly and a cabinet. The power supply system comprises the temperature adjusting assembly, a switching device and a controller. The switching device comprises a first group of switches and a second group of switches; the temperature-adjusting assembly is connected with a power supply through a first group of switches of the switching device; the electric equipment is connected with the power supply through a second group of switches of the switching device; the first group of switches are auxiliary contacts of the switching device, and the second group of switches are main contacts of the switching device; the controller is used for controlling the second group of switches to be switched on or switched off, and the first group of switches are switched on or switched off along with the second group of switches. Therefore, an independent control switch does not need to be arranged for the temperature adjusting assembly, especially when the number of the temperature adjusting assemblies is large, the effect is more obvious, the number of independent switching devices can be reduced, the cost of a hardware circuit is reduced, and the occupied space of hardware is saved. It should be understood that when the number of circuit hardware is small, the overall failure rate is low, and therefore the overall reliability of the power supply system can be improved.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a power supply system and a cabinet for a temperature control component. Background Art

[0002] Currently, the power supply path of the temperature control component inside the power equipment cabinet is controlled by an independent switch device such as a relay or contactor. The temperature control component can be, for example, a fan or a liquid cooling radiator.

[0003] If there are more temperature control components inside a cabinet, more relays or contactors are used.

[0004] The more switching devices there are inside the cabinet, the higher the cost and the higher the failure rate. Utility Model Content

[0005] In view of this, the present application provides a power supply system and cabinet for a temperature control component, which can reduce the number of single switch devices and improve reliability.

[0006] The present application provides a power supply system for a temperature control component, comprising: a temperature control component, a switch device and a controller; the switch device comprises a first group of switches and a second group of switches;

[0007] The temperature adjustment component is connected to a power source via the first group of switches of the switch device;

[0008] The electrical equipment is connected to the power supply through the second set of switches of the switching device; the first set of switches are auxiliary contacts of the switching device, and the second set of switches are main contacts of the switching device;

[0009] The controller is used to control the second group of switches to be turned on or off, and the first group of switches is turned on or off following the second group of switches.

[0010] A possible implementation further includes: a delay device;

[0011] The delay device is connected in series to the power supply path of the first group of switches and the thermostat component;

[0012] The controller is used to control the second group of switches to be turned on, and control the delay device to be turned on;

[0013] The controller is used to control the second group of switches to be turned off, and to control the delay device to be turned off.

[0014] In a possible implementation, the delay device includes a time relay or a time contactor.

[0015] In one possible implementation, the temperature adjustment component includes at least one of a fan or a liquid cooling radiator.

[0016] In a possible implementation, multiple components in the temperature adjustment component are connected in parallel on the power supply path.

[0017] In a possible implementation, the electrical device is one of an inverter, an energy storage converter, a switching device, a transformer or a converging device.

[0018] In a possible implementation, the switching device includes a relay or a contactor.

[0019] In one possible implementation, the delay device includes a contact and a coil, wherein the two ends of the contact are respectively connected to the first end of the first group of switches and the temperature control component, the second end of the first group of switches is connected to the live wire, and the two ends of the coil are respectively connected to the first group of switches and the neutral wire.

[0020] The present application also provides a cabinet, comprising: an electrical device, a main circuit, and a power supply system of the temperature control component described above; the main circuit is used to supply power to the electrical device;

[0021] The main circuit includes the switching device, the second group of switches of the switching device is connected to the electrical equipment; the first group of switches of the switching device is connected to the temperature adjustment component.

[0022] It can be seen that this application has the following beneficial effects:

[0023] In the power supply system of the thermostat assembly provided in the embodiment of the present application, the electrical equipment and the thermostat assembly share the switching device on the main circuit of the power supply system, and the switching device includes a first group of switches and a second group of switches. The first group of switches is used to control whether power is supplied to the thermostat assembly, and the second group of switches is used to control whether power is supplied to the electrical equipment; and the first group of switches follows the second group of switches in linkage, that is, when the controller controls the second group of switches to operate, the first group of switches automatically follows the second group of switches to operate. In this way, there is no need to set up a separate control switch for the thermostat assembly, and the effect is more obvious when the number of thermostat assemblies is large. It can save the number of independent switching devices, reduce the cost of the hardware circuit, and save the space occupied by the hardware. It should be understood that when the circuit hardware is less, the overall failure rate is lower, and therefore the overall reliability of the power supply system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of a traditional power supply for a thermostat component;

[0025] Figure 2 For Figure 1 Corresponding coil power supply schematic;

[0026] Figure 3A schematic diagram of a power supply system for a temperature control component provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a power supply system for another temperature control assembly provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a cabinet provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The embodiment of the present application does not specifically limit the type of the temperature control component, and it can be, for example, a fan or a liquid cooling radiator, etc. For example, a fan is used for heat dissipation, and a liquid cooling radiator is used for cooling.

[0030] The embodiments of the present application do not specifically limit the type of electrical equipment. The electrical equipment may be power electronic equipment in a cabinet, such as inverters, busbar equipment, transformers, energy storage converters, switching equipment, etc.

[0031] For example, the cabinet in a photovoltaic system or an energy storage system includes a main circuit, such as an inverter cabinet, and the cabinet includes a thermostat component, such as a fan. Traditionally, the thermostat components inside the cabinet use independent power supply paths, and each power supply path includes switching devices such as relays. In this way, when the number of thermostat components is large, there are more power supply paths and more independent switching devices, which take up a certain amount of space and are costly. Since the main circuit includes switching devices, and the switching devices on the main power supply circuit generally include multiple contacts, there are remaining contacts. Therefore, in order to save hardware layout, reduce space, and save costs, the embodiments of the present application can use the remaining contacts of the switching devices on the main circuit to realize the control of the thermostat component.

[0032] See also Figure 1 , this figure is a schematic diagram of the power supply of a traditional temperature control component.

[0033] Figure 1 The example of the thermostat components including three is introduced, namely M4, M5 and M6. The switching devices on the power supply paths corresponding to M4, M5 and M6 are independent relays KM4, KM5 and KM6 respectively. It should be understood that for relays, Figure 1 What is shown are only the contacts of the relay. In addition, the system also needs to include the coils corresponding to the three relays, a branch circuit for supplying power to the relay coils, and a switch on the branch circuit for supplying power to the relay coils.

[0034] The power supply of the coil can be found in Figure 2 Coil power supply branch shown.

[0035] Figure 2 KM4, KM5 and KM6 in are Figure 1The relay contacts M4, M5, and M6 correspond to the corresponding coils. The power supply branches for these three coils are connected in series with switches K4, K5, and K6, respectively. Switches K4, K5, and K6 each require corresponding coils. This shows that the independent power supply circuit for the thermostat component is relatively complex and requires more hardware.

[0036] In order to solve this problem, the present application utilizes the auxiliary contacts of the switching device on the main circuit to realize the power supply of the temperature control component. This eliminates the need to add independent switching devices, saves hardware circuits, and rationally utilizes idle auxiliary contacts, thereby rationally utilizing resources.

[0037] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the embodiments of the present application are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] See also Figure 3 , this figure is a schematic diagram of a power supply system of a temperature control component provided in an embodiment of the present application.

[0039] The power supply system of the temperature control component provided in the embodiment of the present application includes: a temperature control component (three are introduced as an example), a switching device 100 and a controller; the switching device 100 includes a first group of switches A and a second group of switches; it should be understood that the switching device 100 is controlled by the controller, and the present application does not specifically limit the type of controller. For example, when the cabinet is an inverter cabinet, the controller can be the controller of the inverter or other controllers independent of the inverter controller. The specific type of the controller can be a microprocessor or a single-chip microcomputer. The electrical equipment is one of an inverter, an energy storage converter, a switching device, a transformer or a converging device.

[0040] The temperature control component in the embodiment of the present application is a general term, which may be one or more, and may include at least one of a fan and a liquid cooling radiator.

[0041] The first set of switches A are auxiliary contacts of the switch device 100, and the second set of switches are main contacts of the switch device. The embodiment of the present application does not specifically limit the number of contacts included in a switch device. Figure 3 It includes five, and it should be understood that it can also be other numbers, such as six, or it can be configured according to actual needs.

[0042] The switch device 100 may be a circuit breaker or a contactor. The switch device 100 generally includes multiple sets of switches. Figure 3 The illustrated switch group includes five sets. This embodiment of the present application does not specifically limit whether a thermostat assembly uses a single set of switches or whether multiple thermostat assemblies share the same set of switches. Furthermore, multiple sets of switches can control the same thermostat assembly. This means that when the thermostat assembly requires a high power, multiple sets of auxiliary contacts may be connected in parallel to power the thermostat assembly.

[0043] Figure 3 The figure is only for illustration. In the embodiment of the present application, a set of switches can be used to power three temperature control components, and multiple components in the temperature control components are connected in parallel on the power supply path.

[0044] The temperature control component is connected to the power supply through the first group of switches A of the switch device, wherein L is the live wire of the power supply and N is the neutral wire of the power supply. Figure 3 Take three temperature control components as an example, namely M1, M2 and M3.

[0045] The electrical device is connected to the power supply via the second set of switches of the switch device 100; that is, the electrical device and the temperature control component are powered by different switches, and the electrical device and the controller are not shown in the figure.

[0046] Because the first set of switches follows the second set of switches in tandem, that is, when the second set of switches closes, the first set of switches also closes; when the second set of switches opens, the first set of switches also opens. Therefore, when the electrical equipment is operating, the controller controls the second set of switches to turn on, and the first set of switches A follows the second set of switches and turns on, thus opening the power supply path for thermostat components M1, M2, and M3. This forms a closed loop between L and N, allowing the power supply to thermostat components M1, M2, and M3. For example, when the electrical equipment is operating, it needs to dissipate heat. Therefore, if the thermostat component is a fan, it can directly dissipate heat for the electrical equipment.

[0047] In the power supply system of the thermostat assembly provided in the embodiment of the present application, the electrical equipment and the thermostat assembly share the switching device on the main circuit of the power supply system, and the switching device includes a first group of switches and a second group of switches. The first group of switches is used to control whether power is supplied to the thermostat assembly, and the second group of switches is used to control whether power is supplied to the electrical equipment; and the first group of switches follows the second group of switches in linkage, that is, when the controller controls the second group of switches to operate, the first group of switches automatically follows the second group of switches to operate. In this way, there is no need to set up a separate control switch for the thermostat assembly, and the effect is more obvious when the number of thermostat assemblies is large. It can save the number of independent switching devices, reduce the cost of the hardware circuit, and save the space occupied by the hardware. It should be understood that when the circuit hardware is less, the overall failure rate is lower, and therefore the overall reliability of the power supply system can be improved.

[0048] In one specific implementation, the switching device is a frame circuit breaker inside the converter cabinet. When the converter is shut down, the switching device does not operate, its auxiliary contacts are normally open, and the fan does not start. When the converter is grid-connected or in standby mode, the power supply to the electrical equipment is already supplied, that is, the second set of switches (main contacts) are closed, and the first set of switches follows suit, that is, the auxiliary contacts are normally closed, opening the power supply circuit for the fan, and the fan starts to dissipate heat.

[0049] It should be understood that when an electrical device stops working, there is still residual heat that needs to be dissipated. That is, after the electrical device stops working, the thermostat assembly needs to continue to operate for a period of time. Since the second set of switches has been disconnected, the first set of switches will also disconnect with the second set of switches. In order to delay the disconnection of the first set of switches, it is necessary to continue to supply power to the thermostat assembly. Therefore, the power supply system provided in the embodiment of the present application also includes: a delay device. The embodiment of the present application adds a delay device to achieve continued heat dissipation and cooling of the electrical device during shutdown.

[0050] The delay device is connected in series to the power supply path of the first set of switches and the thermostat component;

[0051] The controller is used to control the second set of switches to be turned on and the delay device to be turned on;

[0052] The controller is used for controlling the second group of switches to be turned off, and controlling the delay device to be turned off.

[0053] The embodiments of the present application do not specifically limit the implementation method of the delay device. For example, the delay device includes a time relay or a time contactor.

[0054] The following describes the implementation of the power supply system provided in the embodiment of the present application including the time relay with reference to the accompanying drawings.

[0055] See also Figure 4 , this figure is a schematic diagram of a power supply system of another temperature control component provided in an embodiment of the present application.

[0056] The power supply system provided in an embodiment of the present application also includes a time relay KR. It should be understood that the time relay includes a contact KR and a coil KR, wherein the two ends of the contact KR are respectively connected to the first end of the first group of switches A and the temperature adjustment component, the second end of the first group of switches A is connected to the live wire L, and the two ends of the coil KR are respectively connected to the switch device A and the neutral wire N.

[0057] When the switch device 100 is closed, the time relay KR immediately activates, closing its contacts and starting a thermostat component, such as a fan. When the switch device 100 is opened, the time relay contacts KR open with a delay, meaning they remain closed and the fan continues to operate until the timer's set timer expires, at which point they open and shut off power. This ensures that the fan continues to dissipate heat even after the electrical equipment stops, ensuring safety.

[0058] Because the first set of switches follows the second set of switches, the thermostat will not operate if the device is not operating, and no heat dissipation is required. When the device is operating, the second set of switches must be closed first, and the first set of switches will follow suit, causing the thermostat to start operating and dissipate heat for the device.

[0059] Based on the power supply system of a temperature control component provided in the above embodiment, the embodiment of the present application further provides a cabinet, which is described in detail below with reference to the accompanying drawings.

[0060] See also Figure 5 , which is a schematic diagram of a cabinet provided in an embodiment of the present application.

[0061] The cabinet provided in the embodiment of the present application includes: an electric device 200, a main circuit and a power supply system 300 of the temperature control component described in the above embodiment. The main circuit is used to supply power to the electric device.

[0062] The main circuit includes the switch device, the second group of switches of the switch device is connected to the electrical equipment, the first group of switches of the switch device is connected to the temperature adjustment component, and the first group of switches follows the second group of switches in a linkage manner.

[0063] The embodiments of the present application do not specifically limit the type of cabinet. For example, it can be an inverter cabinet. The inverter includes a main power supply circuit, and the auxiliary contacts of the main power supply circuit can be used to control the power supply of the temperature control component. This can reduce the large number of independent relays or contactors inside the cabinet, reduce the incidence of device failure during large-scale long-term operation, and reduce the internal space of the cabinet occupied by the hardware circuit.

[0064] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from the other embodiments. Similar or identical parts between the various embodiments can be referred to in conjunction with each other. The methods disclosed in the embodiments are described briefly because they correspond to the product embodiments disclosed in the embodiments. For relevant details, refer to the description of the product embodiments.

[0065] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power supply system for a temperature control component, characterized in that: include: A temperature control component, a switch device and a controller; the switch device includes a first group of switches and a second group of switches; The temperature adjustment component is connected to a power source via the first group of switches of the switch device; The electrical equipment is connected to the power supply through the second set of switches of the switching device; the first set of switches are auxiliary contacts of the switching device, and the second set of switches are main contacts of the switching device; The controller is used to control the second group of switches to be turned on or off, and the first group of switches is turned on or off following the second group of switches.

2. The power supply system according to claim 1, characterized in that: Also includes: Delay devices; The delay device is connected in series to the power supply path of the first group of switches and the thermostat component; The controller is used to control the second group of switches to be turned on, and control the delay device to be turned on; The controller is used to control the second group of switches to be turned off, and to control the delay device to be turned off.

3. The power supply system according to claim 2, characterized in that: The delay device includes a time relay or a time contactor.

4. The power supply system according to claim 1 or 2, characterized in that: The temperature adjustment component includes at least one of a fan and a liquid cooling radiator.

5. The power supply system according to claim 2, characterized in that: A plurality of components in the temperature regulating component are connected in parallel on the power supply path.

6. The power supply system according to claim 1 or 2, characterized in that: The electrical equipment is one of an inverter, an energy storage converter, a switching device, a transformer or a converging device.

7. The power supply system according to claim 1 or 2, characterized in that: The switching device includes a relay or a contactor.

8. The power supply system according to claim 2, wherein: The delay device includes a contact and a coil, the two ends of the contact are respectively connected to the first end of the first group of switches and the temperature adjustment component, the second end of the first group of switches is connected to the live wire, and the two ends of the coil are respectively connected to the first group of switches and the neutral wire.

9. A cabinet, characterized in that: include: Electrical equipment, a main circuit, and a power supply system for the temperature control component according to any one of claims 1 to 8; The main circuit is used to supply power to the electrical equipment; The main circuit includes the switching device, the second group of switches of the switching device is connected to the electrical equipment; the first group of switches of the switching device is connected to the temperature adjustment component.

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