Double-input uninterruptible power supply circuit with standby power and automatic switching functions

Abstract

The utility model provides a double-input uninterruptible power supply circuit with standby power and automatic switching functions. The circuit comprises a first automatic switching unit, a first UPS, a first switch, a UPS storage battery pack and a second switch. The first end of the first switch is used for accessing main power, and the second end of the first switch is connected with the common input end of the first automatic switching unit through the first UPS; the first UPS is also connected with the UPS storage battery pack through the second switch; the standby power input end of the first automatic switching unit is used for accessing standby power, and the output end of the first automatic switching unit is used for being connected with a load.

Description

TECHNICAL FIELD

[0001] The utility model relates to UPS power supply technical field especially relates to a double input area power supply circuit with standby power and automatic switching function. BACKGROUND

[0002] As an important part of renewable energy development, container energy storage becomes a mainstream product, and the stable operation of container energy storage system is required for more than 20 years, which seriously challenges the power supply part in the system.

[0003] At present, the power supply of container energy storage system mainly uses ATS (automatic transfer switch) plus UPS (uninterruptible power supply) scheme, in which the UPS is behind the ATS switch in the conventional circuit. With the increase of use time to 3-5 years, the UPS host containing electronic devices begins to expose various problems, and faults occur frequently. The most serious phenomenon is that the problems of UPS host itself and UPS battery will cause instantaneous power failure of the system, which will impact the power station and power grid. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving one of the technical problems in the related art at least to some extent.

[0005] Therefore, the utility model aims at providing a double input area power supply circuit with standby power and automatic switching function, and the main purpose is to solve the problem of instantaneous power failure caused by problems of UPS or UPS battery.

[0006] To achieve the above purpose, the utility model provides a double input area power supply circuit with standby power and automatic switching function, which comprises a first automatic switching unit, a first UPS, a first switch, a UPS battery pack and a second switch. The first end of the first switch is used for connecting the main power, the second end of the first switch is connected with the first automatic switching unit through the first UPS and the commonly used input end; the first UPS is further connected with the UPS battery pack through the second switch; the standby power input end of the first automatic switching unit is used for connecting the standby power, and the output end of the first automatic switching unit is used for connecting the load.

[0007] The utility model discloses a double input area with standby power and automatic switching function's uninterrupted power supply circuit, including first automatic switching unit, first UPS, first switch, UPS battery group and second switch, the first end of first switch is used to access main electricity, and the second end of first switch is connected with the normal use input end of first automatic switching unit through first UPS, and first UPS still is connected with UPS battery group through second switch, and the standby power input end of first automatic switching unit is used to access standby power, and the output end of first automatic switching unit is used to be connected with load.

[0008] In the double input area with standby power and automatic switching function's uninterrupted power supply circuit provided in the first aspect of the utility model, still include second UPS, third switch, fourth switch and second automatic switching unit, the standby power input end of second automatic switching unit is connected with the output end of first automatic switching unit, and the output end of second automatic switching unit is used to be connected with load, and the output end of first automatic switching unit is connected with second UPS through third switch, and second UPS still is connected with UPS battery group through fourth switch, and the output end of second UPS is connected with the main electricity input end of second automatic switching unit.

[0009] In the double input area with standby power and automatic switching function's uninterrupted power supply circuit provided in the first aspect of the utility model, still include fifth switch, the first end of fifth switch is used to access standby power, and the second end of fifth switch is connected with the standby power input end of first automatic switching unit.

[0010] In the double input area with standby power and automatic switching function's uninterrupted power supply circuit provided in the first aspect of the utility model, first automatic switching unit adopts ATS.

[0011] In the double input area with standby power and automatic switching function's uninterrupted power supply circuit provided in the first aspect of the utility model, second automatic switching unit adopts STS.

[0012] The additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0014] Figure 1 It is a kind of double input area with standby power and automatic switching function's uninterrupted power supply circuit diagram provided by the utility model embodiment.

[0015] Figure 2 Another double-input uninterrupted power supply circuit with standby power and automatic switching function provided by the utility model embodiment;

[0016] Figure 3 The utility model provides for the circuit of the first UPS replacement of the running state diagram shown in figure 1; Figure 2

[0017] Figure 4 The utility model provides for the circuit of the first UPS replacement of the running state diagram shown in figure 1; Figure 2

[0018] Figure 5 The utility model provides for the circuit of the first UPS replacement of the running state diagram shown in figure 1; Figure 2 DETAILED DESCRIPTION

[0019] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements throughout the several views. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements throughout the several views. The following exemplary embodiments described in the following description are not meant to represent all embodiments in accordance with the present embodiments. Rather, they are merely examples with respect to apparatuses and methods in accordance with some aspects of the present embodiments as detailed in the appended claims.

[0020] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present embodiments. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0021] ​​​In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an implied order of magnitude. Thus, features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. It should also be understood that the term "and / or" used in the present application means any or all possible combinations of one or more associated listed items.

[0022] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0023] The present application will be described in detail below with specific embodiments.

[0024] The present application provides a dual-input uninterrupted power supply circuit with standby power and automatic switching function, the main purpose is to solve the instantaneous power failure problem caused by UPS or UPS battery problems.

[0025] In the embodiments of the present application, the dual-input uninterrupted power supply circuit with standby power and automatic switching function includes a first automatic switching unit, a first UPS, a first switch, a UPS battery pack and a second switch; the first end of the first switch is used for connecting the main power, and the second end of the first switch is connected with the first automatic switching unit through the first UPS; the first UPS is further connected with the UPS battery pack through the second switch; the standby power input end of the first automatic switching unit is used for connecting the standby power, and the output end of the first automatic switching unit is used for connecting the load.

[0026] In some embodiments, the first automatic switching unit can adopt ATS. The ATS preferentially connects the normal power (i.e. the main power) sent by the normal input end, and connects the standby power sent by the standby power input end when there is no power in the normal input end.

[0027] Taking the first automatic switching unit as an example, Figure 1 The present application provides a dual-input uninterrupted power supply circuit with standby power and automatic switching function.

[0028] For example, Figure 1The utility model discloses a double input with standby power and automatic switching function's uninterrupted power supply circuit provided by the embodiment of the utility model includes ATS, UPS1 (first UPS), first switch QF1, UPS battery pack and second switch QFA1. The first end of first switch QF1 is used for accessing main electricity, and the second end of first switch QF1 is connected with the normal input end of ATS through UPS1. UPS1 is also connected with UPS battery pack through second switch QFA1. The standby power input end of ATS is used for accessing standby power, and the output end of ATS is used for connecting with load. When UPS or UPS battery appears the problem, ATS will send the standby power to load, and the instantaneous power failure problem caused when UPS or UPS battery appears the problem is solved. Moreover, when replacing UPS or UPS battery, load can still normally obtain electric energy.

[0029] In some embodiments, in order to better realize uninterrupted power supply and improve the stability of the performance of the system, the double input with standby power and automatic switching function's uninterrupted power supply circuit provided by the embodiment of the utility model increases multiple switches, a standby UPS and a second automatic switching unit. Specifically, the double input with standby power and automatic switching function's uninterrupted power supply circuit provided by the embodiment of the utility model further includes a second UPS (i.e. a standby UPS), a third switch, a fourth switch and a second automatic switching unit. The standby power input end of the second automatic switching unit is connected with the output end of the first automatic switching unit, and the output end of the second automatic switching unit is used for connecting with load. The output end of the first automatic switching unit is connected with the second UPS through the third switch, the second UPS is further connected with the UPS battery pack through the fourth switch, and the output end of the second UPS is connected with the main power input end of the second automatic switching unit.

[0030] In some embodiments, the double input with standby power and automatic switching function's uninterrupted power supply circuit provided by the embodiment of the utility model further includes a fifth switch. The first end of the fifth switch is used for accessing standby power, and the second end of the fifth switch is connected with the standby power input end of the first automatic switching unit.

[0031] In some embodiments, the second automatic switching unit can adopt STS (static transfer switch). STS has double inputs, which are input 1 end and input 2 end respectively. The input 1 end is the standby power input end of STS. The input 2 end is the main power input end of STS. When the input 1 end and the input 2 end both have electricity, STS sends the electric energy of the main power input end to load.

[0032] Taking the first automatic switching unit adopting ATS and the second automatic switching unit adopting STS as an example, Figure 2 Another double input with standby power and automatic switching function's uninterrupted power supply circuit diagram provided by the embodiment of the utility model.

[0033] As Figure 2The utility model discloses a double input area power supply circuit with standby power and automatic switching function, which comprises an ATS, a UPS1, a first switch QF1, a UPS battery pack, a second switch QFA1, a UPS2 (i.e., a second UPS), a third switch QF3, a fourth switch QFA2, an STS and a fifth switch QF2.

[0034] Figure 3 The utility model discloses a double input area power supply circuit with standby power and automatic switching function, which comprises an ATS, a UPS1, a first switch QF1, a UPS battery pack, a second switch QFA1, a UPS2 (i.e., a second UPS), a third switch QF3, a fourth switch QFA2, an STS and a fifth switch QF2. Figure 2 The circuit normal power-up running state diagram is shown.

[0035] When all UPS and UPS battery pack are normal, as shown in the figure, Figure 3 All UPS are in the state of starting, and all switches are in the closed state, i.e., the first switch QF1, the second switch QFA1, the third switch QF3, the fourth switch QFA2 and the fifth switch QF2 are all in the closed state, at this time, when the normal power supply is normal, the path of the normal power supply is path 1, specifically, the ATS sends the main power (i.e., the normal power supply) through the UPS1 to the output end of the ATS, and the electric energy of the output end of the ATS directly reaches the STS in one way and reaches the STS through the UPS2 in the other way, and the STS automatically sends the electric energy of the main power input end (i.e., the electric energy from the UPS2) to the load. The UPS1 and the UPS2 charge the UPS battery pack through the second switch QFA1 and the fourth switch QFA2 respectively. When the normal power supply stops supplying power, the UPS battery pack supplies power to the UPS1 to make the UPS1 work normally, and then the ATS sends the electric energy from the UPS1 to the UPS2, and then sends the electric energy to the load through the STS. When the normal power supply stops supplying power and the UPS battery pack is empty, the ATS automatically switches to the standby power supply, i.e., the ATS sends the standby power supply to the UPS2, and then sends the electric energy to the load through the STS, and also charges the UPS battery pack through the UPS2. When the standby power supply stops, the UPS battery pack supplies power to the UPS2, and then sends the electric energy to the load through the STS.

[0036] Figure 4 The utility model discloses a double input area power supply circuit with standby power and automatic switching function, which comprises an ATS, a UPS1, a first switch QF1, a UPS battery pack, a second switch QFA1, a UPS2 (i.e., a second UPS), a third switch QF3, a fourth switch QFA2, an STS and a fifth switch QF2. Figure 2 The circuit normal power-up running state diagram is shown.

[0037] When all the UPSs are in the on state, if the UPS 1 fails, as shown in the figure, Figure 4 the first switch QF1 is in the open state, the second switch QFA1 is in the open state, the third switch QF3, the fourth switch QFA2 and the fifth switch QF2 are all in the closed state; the standby power is sent to the STS through the ATS according to the path 2, the output end of the ATS also sends the power to the STS through the UPS 2 according to the path 3, and the STS automatically sends the power of the main power input end (i.e. the power from the UPS 2) to the load. The UPS 2 charges the UPS battery pack through the fourth switch QFA2. At this time, the UPS 1 can be replaced under the condition of uninterrupted power supply.

[0038] In some embodiments, if the UPS 1 and the UPS 2 both fail, the first switch QF1 is in the open state, the second switch QFA1 is in the open state, the third switch QF3 is in the open state, and the fourth switch QFA2 is in the open state; the standby power is sent to the load through the ATS according to the path 2 in the figure. Figure 4 At this time, the UPS 1 and the UPS 2 can be replaced under the condition of uninterrupted power supply.

[0039] Figure 5 The utility model provides the running state diagram when replacing the UPS battery pack for the circuit as shown in the figure. Figure 2

[0040] When all the UPSs are in the on state, if the UPS battery pack fails, as shown in the figure, Figure 5 the first switch QF1 is in the closed state, the second switch QFA1 is in the open state, the third switch QF3 is in the closed state, the fourth switch QFA2 is in the open state, and the fifth switch QF2 is in the closed state; at this time, when the normal power supply is normal, the ATS sends the main power (i.e. the normal power) of the UPS 1 to the output end of the ATS, the power of the output end of the ATS directly reaches the STS in one way and reaches the STS through the UPS 2 in the other way, and the STS automatically sends the power of the main power input end (i.e. the power from the UPS 2) to the load. When the normal power supply is not powered, the standby power is sent to the STS through the ATS according to the path 4, and then sent to the load. At this time, the UPS battery pack can be replaced under the condition of uninterrupted power supply.

[0041] In the embodiment of the utility model, the double-input uninterrupted power supply circuit with standby power and automatic switching function can replace the UPS under the condition of uninterrupted power supply when the UPS fails or is damaged. Figure 2

[0042] Specifically, the utility model discloses an uninterrupted power supply circuit with double inputs. Figure 2 ​​The double-input uninterrupted power supply circuit with standby power and automatic switching function adds UPS and STS uninterrupted transfer switch on the container energy storage system power supply circuit, and two UPS hosts use a set of UPS storage battery and have standby power function, thereby reducing cost, increasing function and power supply guarantee.

[0043] 1) The problem that the UPS host (i.e. UPS1) cannot supply power to the load in case of failure is solved; specifically, when UPS1 cannot output voltage due to failure, the ATS automatically switches to standby power output, and UPS2 (standby UPS) continuously outputs voltage to supply power to the load, thereby realizing the uninterrupted power switching standby power function.

[0044] 2) The problem that the entire power supply circuit needs to be powered off for maintenance in case of UPS damage is solved; specifically, by disconnecting QF1 or QF3 in front of the UPS, the physical disconnection point in front of and behind the UPS can be ensured, and by disconnecting the UPS battery switch, the UPS battery can be replaced or maintained. During the replacement or maintenance period, the load is powered by the standby input power or UPS2, achieving an uninterrupted power supply scheme.

[0045] 3) The problem of replacing the UPS battery without power interruption is solved; by disconnecting QFA1 and then disconnecting QFA2 switch after the ATS automatically switches to standby power, the UPS battery can be replaced. During the replacement of the UPS battery, the load is powered by the standby power input through the ATS and STS, achieving an uninterrupted power supply effect.

[0046] The double-input uninterrupted power supply circuit with standby power and automatic switching function provided by the embodiment of the utility model, including first automatic switching unit, first UPS, first switch, UPS battery pack and second switch, the first end of first switch is used for connecting main power, the second end of first switch is connected with the normal input end of first automatic switching unit through first UPS, first UPS is also connected with UPS battery pack through second switch, the standby power input end of first automatic switching unit is used for connecting standby power, the output end of first automatic switching unit is used for connecting with load. In this case, when the UPS or UPS battery has a problem, the first automatic switching unit can send standby power to the load to ensure normal operation of the load, solving the problem of instantaneous power failure caused by the problem of the UPS or UPS battery. The utility model can replace the UPS or UPS battery pack without stopping the system operation.

[0047] The utility model has the following beneficial effects: the problem that the UPS of the long-time power supply system of the container power supply system in the energy storage field is aged and damaged, and the system operation needs to be stopped is solved; the scheme that the UPS of the container energy storage system is replaced without stopping the operation is provided; the scheme that the UPS battery pack of the container energy storage system is replaced without stopping the operation is provided.

[0048] It should be understood that the components, connections and relationships of the components, and the functions of the components shown in the present application are merely examples, and are not intended to limit the implementation of the present application described and / or claimed in the present application. The various forms of processes shown above can be reordered, added or deleted. For example, the steps described in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in the present application can be achieved, and the present application does not limit here.

[0049] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A dual-input uninterruptible power supply circuit with backup power and automatic switching functions, characterized in that, The first automatic switching unit, the first UPS, the first switch, the UPS battery pack and the second switch are included; the first end of the first switch is used for accessing the main power, the second end of the first switch is connected with the normal input end of the first automatic switching unit through the first UPS; the first UPS is further connected with the UPS battery pack through the second switch; the standby power input end of the first automatic switching unit is used for accessing the standby power, and the output end of the first automatic switching unit is used for being connected with the load.

2. The dual input battery back-up and automatic switchover function uninterruptible power supply circuit of claim 1, wherein, The second UPS, the third switch, the fourth switch and the second automatic switching unit are further included; the standby power input end of the second automatic switching unit is connected with the output end of the first automatic switching unit, and the output end of the second automatic switching unit is used for being connected with the load; the output end of the first automatic switching unit is connected with the second UPS through the third switch, the second UPS is further connected with the UPS battery pack through the fourth switch, and the output end of the second UPS is connected with the main power input end of the second automatic switching unit.

3. The dual-input standby power and automatic switchover function uninterruptible power supply circuit according to claim 1 or 2, characterized in that, The fifth switch is further included, the first end of the fifth switch is used for accessing the standby power, and the second end of the fifth switch is connected with the standby power input end of the first automatic switching unit.

4. The dual input battery back-up and automatic switchover function uninterruptible power supply circuit of claim 1, wherein, The first automatic switching unit adopts ATS.

5. The dual input battery back-up and automatic switchover function uninterruptible power supply circuit of claim 2, wherein, The second automatic switching unit adopts STS.

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