Passive power supply circuit, power supply equipment and equipment

Abstract

The utility model provides a passive power supply circuit, power supply equipment and equipment, and relates to the technical field of energy storage. The rear-end power supply module is connected with the energy storage module and used for stabilizing the voltage output by the energy storage module when the voltage at the two ends of the energy storage module is higher than a voltage stabilization threshold value, and the voltage after voltage stabilization is used for supplying power to a rear-end load; and the voltage stabilization protection module is connected with the energy storage module and is used for releasing the voltage at the two ends of the energy storage module when the voltage at the two ends of the energy storage module is higher than a protection threshold value. According to the utility model, the voltage output by the energy storage module can be stabilized to supply power to the rear end, and the voltage of the energy storage module is relieved by using the voltage stabilization protection module, so that the service life of the energy storage module is prolonged, and the damage to the rear-end load is prevented.

Description

Technical Field

[0001] This utility model relates to the field of power supply management technology, and in particular to a passive power supply circuit, power supply equipment and device. Background Technology

[0002] In modern power systems, energy storage modules are increasingly widely used, playing a vital role in stabilizing power supply, regulating grid load, and improving the utilization rate of renewable energy. However, during operation, the voltage across an energy storage module may fluctuate for various reasons, even exceeding safe limits. This not only affects the module's performance and lifespan but may also damage connected equipment. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a passive power supply circuit, power supply equipment and device, in order to solve the above problems.

[0004] In a first aspect, embodiments of this utility model provide a passive power supply circuit, including:

[0005] Energy storage module,

[0006] A back-end power supply module is connected to the energy storage module and is used to regulate the voltage output by the energy storage module when the voltage across the energy storage module is higher than the voltage regulation threshold. The regulated voltage is then used to supply power to the back-end load.

[0007] A voltage regulation and protection module is directly or indirectly connected to the energy storage module and is used to release the voltage across the energy storage module when the voltage across the energy storage module is higher than the protection threshold.

[0008] In the circuit, when the voltage across the energy storage module is too high, the voltage regulator module is used to regulate the voltage of the downstream load to prevent the downstream load from bearing too much voltage. At the same time, the voltage regulator module is used to release the voltage of the energy storage capacitor when the voltage across the energy storage module is too high, thereby improving the safety and lifespan of the energy storage module capacitor and the downstream load.

[0009] One possible approach is that the energy storage module is connected to a front-end power supply module; the front-end power supply module includes an AC power supply coil and a rectifier.

[0010] One possible approach is that the back-end power supply module includes a first voltage monitoring submodule and a linear regulator;

[0011] The control terminal of the first voltage monitoring submodule is connected to the energy storage module;

[0012] The controlled terminal of the first voltage monitoring submodule is connected to the enable terminal of the linear regulator;

[0013] The first voltage monitoring submodule is used to output a first control signal when the voltage across the energy storage module is higher than the voltage regulation threshold. The first control signal is used to control the operation of the linear regulator.

[0014] One possible approach is to use a Zener diode as the voltage regulation and protection module.

[0015] The Zener diode has its anode connected to the output terminal of the rectifier. When the voltage across the energy storage module is higher than the protection threshold, the Zener diode operates, and the rectifier stops supplying power to the energy storage module.

[0016] or

[0017] The positive terminal of the Zener diode is connected to the energy storage module through a voltage monitoring module, and is used to discharge the voltage across the energy storage module in response to the first control signal.

[0018] One possible approach is that the voltage monitoring submodule includes one of the following: a transistor, an IGBT, or a MOSFET.

[0019] One possible approach is a voltage regulation and protection module, comprising: an optocoupler submodule and a second voltage monitoring submodule.

[0020] The control terminal of the second voltage monitoring submodule is connected to the energy storage module;

[0021] One end of the optocoupler submodule is connected to the controlled end of the second voltage monitoring submodule, and is used to output a second control signal when the voltage across the energy storage module is higher than the protection threshold.

[0022] The other end of the optocoupler module is connected to the AC power supply coil, and is used to adjust the output voltage of the AC power supply coil in response to the second control signal, so that the rectifier stops charging the energy storage module.

[0023] One possible approach is that the first and second monitoring submodules include one of a transistor, an IGBT, or a MOSFET.

[0024] One possible approach is that the energy storage module includes one of the following: lithium battery, supercapacitor, lead-acid battery, sodium-sulfur battery, or flow battery.

[0025] Secondly, this utility model provides a power supply device, including the circuit described in the first aspect.

[0026] Thirdly, this utility model provides a device, including a back-end load and a power supply device provided in the second aspect.

[0027] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A passive power supply circuit structure diagram provided for an embodiment of this utility model.

[0031] Figure 2(a) is a diagram of another passive power supply circuit provided in an embodiment of the present invention.

[0032] Figure 2(b) is a diagram of another passive power supply circuit provided in an embodiment of the present invention.

[0033] Figures 3(a) and 3(b) are example diagrams of a passive power supply circuit provided by an embodiment of the present invention.

[0034] Figure 4 This is an example diagram of another passive power supply circuit provided for an embodiment of the present utility model. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In modern power systems, energy storage modules are increasingly widely used, playing a vital role in stabilizing power supply, regulating grid load, and improving the utilization rate of renewable energy. However, during operation, the voltage across an energy storage module may fluctuate for various reasons, even exceeding safe limits. This not only affects the module's performance and lifespan but may also damage connected equipment.

[0037] Reference Figure 1 To address the aforementioned issues, this application provides a passive power supply circuit, specifically comprising: an energy storage module, a back-end power supply module, and a voltage regulation and protection module.

[0038] In the embodiments provided in this application, the energy storage module is mainly used for energy storage and storage. The back-end power supply module is connected to the energy storage module. When the voltage across the energy storage module is higher than the voltage regulation threshold, the back-end power supply module regulates the voltage output by the energy storage module. The regulated voltage is used to supply power to the back-end load.

[0039] Therefore, when the voltage output by the energy storage module is too high, the voltage output by the energy storage module can be regulated to prevent the input voltage to the downstream load from being too high.

[0040] The voltage regulation and protection module is directly or indirectly connected to the energy storage module and is mainly used to release the voltage across the energy storage module when the voltage across the energy storage module is higher than the protection threshold.

[0041] Therefore, when the voltage output by the energy storage module exceeds the protection threshold, the voltage of the energy storage module can be released through the voltage regulation and protection module to protect the energy storage module.

[0042] In summary, in the embodiments provided in this application, when the voltage across the energy storage module is too high, the voltage output by the energy storage module can be stabilized to supply power to the downstream. At the same time, the voltage stabilization protection module is used to release the voltage of the energy storage module, thereby extending the service life of the energy storage module and preventing damage to the downstream load.

[0043] In some embodiments, in order to supply power to the energy storage module, referring to FIG2(a), the embodiments of this application further include a front-end power supply module, which is connected to the energy storage module and includes an AC power supply coil and a rectifier.

[0044] The energy storage module can be powered in the way described above.

[0045] Referring to Figure 2(b), in the embodiments provided in this application, in order to supply power to the backend, one possible approach is that the backend power supply module includes a first voltage monitoring submodule and a linear regulator.

[0046] In this embodiment, the control terminal of the first voltage monitoring submodule is connected to the energy storage module, and the controlled terminal of the first voltage monitoring submodule is connected to the enable terminal of the linear regulator.

[0047] When the voltage across the energy storage module is higher than the voltage regulation threshold, the first voltage monitoring submodule outputs a first control signal. The linear regulator receives and responds to the first control signal to operate. In other words, the first control signal is used to control the operation of the linear regulator.

[0048] In this way, when the voltage across the energy storage module is higher than the voltage regulation threshold, the linear regulator will work to regulate the voltage output by the energy storage module, preventing the downstream load from being subjected to excessive voltage.

[0049] In the embodiments provided by this utility model, the voltage regulation protection module is a Zener diode. Referring to 3(a) and 3(b), two specific embodiments will be provided below:

[0050] Referring to Figure 3(a), in this example, the positive terminal of the Zener diode is connected to the output terminal of the rectifier. When the voltage across the energy storage module is higher than the protection threshold, the Zener diode operates, and the rectifier stops supplying power to the energy storage module. The depressurization direction of the energy storage module is shown by the arrow.

[0051] Referring to Figure 3(b), in this example, the positive terminal of the Zener diode is connected to the energy storage module through the voltage monitoring module. As mentioned above, when the voltage across the energy storage module is higher than the voltage regulation threshold, the first voltage monitoring module outputs a first control signal, and the Zener diode receives and responds to the first control signal to discharge the voltage across the energy storage module.

[0052] In this example, the protection threshold and the voltage regulation threshold are equal.

[0053] Comparing the two examples in Figure 3(a) and Figure 3(b), the voltage relief capability of the example in Figure 3(a) is weaker than that of the example in Figure 3(b) due to the output current of the voltage monitoring submodule.

[0054] Based on the aforementioned embodiments, the first voltage monitoring submodule includes one of a transistor, an IGBT, or a MOSFET.

[0055] Reference Figure 4 In some examples, the voltage regulation and protection module and the back-end power supply module are controlled by two separate devices. In this example, the back-end power supply module includes a first voltage monitoring submodule and a linear regulator.

[0056] Specifically, the control terminal of the first voltage monitoring submodule is connected to the energy storage module, and the controlled terminal of the first voltage monitoring submodule is connected to the enable terminal of the linear regulator.

[0057] When the voltage across the energy storage module is higher than the voltage regulation threshold, the first voltage monitoring submodule outputs a first control signal, and the linear regulator receives and responds to the control signal to operate.

[0058] In this example, the voltage regulation and protection module includes an optocoupler submodule and a second voltage monitoring submodule. The control terminal of the second voltage monitoring submodule is connected to the energy storage module, and one end of the optocoupler submodule is connected to the controlled terminal of the second voltage monitoring submodule. When the voltage across the energy storage module is higher than the protection threshold, a second control signal is output.

[0059] The other end of the optocoupler module is connected to the AC power supply coil. When the voltage across the energy storage module is higher than the protection threshold, the optocoupler module receives and responds to the third control signal to adjust the output voltage of the AC power supply coil so that the rectifier stops charging the energy storage module.

[0060] In this example, the first and second monitoring submodules include one of the following: a transistor, an IGBT, or a MOSFET.

[0061] In the embodiments provided by this utility model, the energy storage module includes one of the following: lithium battery, supercapacitor, lead-acid battery, sodium-sulfur battery, and flow battery.

[0062] Based on the foregoing embodiments, this utility model provides a power supply device, including the passive power supply circuit provided in the foregoing embodiments.

[0063] Based on the foregoing embodiments, the present invention provides a device including a back-end load and a power supply device provided in the foregoing embodiments.

[0064] In the description of the embodiments of this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present utility model. In the embodiments of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in the embodiments of this utility model, as well as the features of the different embodiments or examples.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of embodiments of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A passive power supply circuit, characterized in that, include: Energy storage module, A back-end power supply module is connected to the energy storage module and is used to regulate the voltage output by the energy storage module when the voltage across the energy storage module is higher than the voltage regulation threshold. The regulated voltage is then used to supply power to the back-end load. A voltage regulation and protection module is directly or indirectly connected to the energy storage module and is used to release the voltage across the energy storage module when the voltage across the energy storage module is higher than the protection threshold.

2. The circuit according to claim 1, characterized in that, The energy storage module is connected to the front-end power supply module; the front-end power supply module includes: an AC power supply coil and a rectifier.

3. The circuit according to claim 2, characterized in that, The back-end power supply module includes a first voltage monitoring submodule and a linear regulator; The control terminal of the first voltage monitoring submodule is connected to the energy storage module; The controlled terminal of the first voltage monitoring submodule is connected to the enable terminal of the linear regulator; The first voltage monitoring submodule is used to output a first control signal when the voltage across the energy storage module is higher than the voltage regulation threshold. The first control signal is used to control the operation of the linear regulator.

4. The circuit according to claim 3, characterized in that, The voltage regulation and protection module is a Zener diode. The Zener diode has its anode connected to the output terminal of the rectifier. When the voltage across the energy storage module is higher than the protection threshold, the Zener diode operates, and the rectifier stops supplying power to the energy storage module. or The positive terminal of the Zener diode is connected to the energy storage module through a voltage monitoring module, and is used to discharge the voltage across the energy storage module in response to the first control signal.

5. The circuit according to claim 3, characterized in that, The first voltage monitoring submodule includes one of the following: a transistor, an IGBT, or a MOSFET.

6. The circuit according to claim 3, characterized in that, Voltage regulation and protection module: includes: optocoupler submodule and second voltage monitoring submodule. The control terminal of the second voltage monitoring submodule is connected to the energy storage module; One end of the optocoupler submodule is connected to the controlled end of the second voltage monitoring submodule, and is used to output a second control signal when the voltage across the energy storage module is higher than the protection threshold. The other end of the optocoupler module is connected to the AC power supply coil, and is used to adjust the output voltage of the AC power supply coil in response to the second control signal, so that the rectifier stops charging the energy storage module.

7. The circuit according to claim 6, characterized in that, The first and second monitoring submodules include one of the following: transistor, IGBT, or MOSFET.

8. The circuit according to any one of claims 1 to 7, characterized in that, The energy storage module includes one of the following: lithium battery, supercapacitor, lead-acid battery, sodium-sulfur battery, and flow battery.

9. A power supply device, characterized in that, Includes the circuit as described in any one of claims 1 to 8.

10. A device, characterized in that, Includes back-end loads and the power supply equipment as described in claim 9.

Images