Energy storage protection system

Abstract

The utility model relates to the field of battery energy storage, and provides an energy storage protection system which comprises a master control module, a switch module, a charging module, a temperature monitoring module and a fan driving module, the input end of the switch module is connected with an external power interface, the output end of the switch module is connected with the input end of the charging module, and the controlled end of the switch module is connected with the master control module; the output end of the charging module is connected with the energy storage battery, the temperature monitoring module is connected with the main control module and used for transmitting detected temperature information of the energy storage battery to the main control module, the controlled end of the fan driving module is connected with the main control module, and the output end of the fan driving module is connected with a cooling fan. The main control module sends a corresponding driving signal to the fan driving module according to the received temperature information of the energy storage battery to control the power of the cooling fan; in the energy storage process, the battery temperature can be monitored, and heat dissipation is provided according to the battery temperature.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery energy storage, and particularly relates to an energy storage protection system. BACKGROUND

[0002] With the development of science and technology, the application of energy storage device is more and more widely, and the energy storage device generally has an energy storage battery inside, and the user can obtain standby power source when needed by charging the energy storage battery when there is electricity. However, when the energy storage battery is charged, heat will be generated, and the energy storage battery will be damaged when overheated. Many users increase a cooling fan on the shell of the energy storage device for heat dissipation of the internal energy storage battery. However, the temperature of the energy storage battery changes with the external environment, charging time and current during the charging process. The cooling fan with a small power cannot meet the requirement when the temperature of the battery is high, and the battery will be damaged if the cooling fan with a large power is always kept on. SUMMARY

[0003] The utility model solves the problem of how to provide an energy storage protection system that can monitor the temperature of the battery during the energy storage process and provide heat dissipation according to the temperature of the battery.

[0004] To solve the above problem, the utility model provides an energy storage protection system, which comprises a main control module, a switch module, a charging module, a temperature monitoring module and a fan driving module. The input end of the switch module is connected with an external power source interface, the output end is connected with the input end of the charging module, the controlled end is connected with the main control module, the output end of the charging module is connected with the energy storage battery, the temperature monitoring module is connected with the main control module and is used for transmitting the detected temperature information of the energy storage battery to the main control module, the controlled end of the fan driving module is connected with the main control module, and the output end is connected with a cooling fan. The main control module sends corresponding driving signals to the fan driving module according to the received temperature information of the energy storage battery, so as to control the power of the cooling fan.

[0005] Further, the energy storage protection system further comprises an auxiliary power supply module, the input end of the auxiliary power supply module is connected with the external power source interface, and the output end provides working voltage for the main control module and the temperature monitoring module respectively.

[0006] Further, the temperature monitoring module comprises a first analog selection switch and a plurality of temperature detection units. Each temperature detection unit corresponds to an energy storage battery temperature collection point. The first analog selection switch has a plurality of input ports. Each output port of the first analog selection switch is connected with a temperature detection unit. The controlled end is connected with the output end of the main control module, and the output end is connected with the signal input end of the main control module.

[0007] Further, the temperature monitoring module further comprises a first switch tube and a first signal amplification circuit, the first signal amplification circuit is arranged between the output end of the first analog selection switch and the signal input end of the main control module, the input end of the first switch tube is connected with the auxiliary power supply module, the controlled end is connected with the output end of the main control module, and the output end is respectively connected with the power supply end of each temperature detection unit.

[0008] Further, the temperature detection unit adopts a thermoelectric pile infrared sensor.

[0009] Further, the fan driving module comprises a first optoelectronic coupler, a first silicon controlled rectifier, a first safety tube and a fan interface, the input end of the first optoelectronic coupler is connected with the output end of the main control module, the output end is connected with the controlled end of the first silicon controlled rectifier, the first silicon controlled rectifier, the fan interface is used for connecting the cooling fan, so that the first power supply terminal of the cooling fan is connected with the positive electrode of the external power supply through the fan interface and the first safety tube, and the second power supply terminal is connected with the negative electrode of the external power supply through the first silicon controlled rectifier.

[0010] Further, the fan driving module further comprises an RC filter circuit, and the RC filter circuit is connected in parallel across the first silicon controlled rectifier.

[0011] Further, the energy storage protection system further comprises a communication alarm module, and the communication alarm module is connected with the main control module, so as to transmit the over-temperature alarm information sent by the main control module to a user terminal.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] When the energy storage battery is charged, the surface temperature of the battery is monitored in real time through multi-point infrared temperature measurement and is transmitted to the main control module, the main control module sends corresponding control signals to the fan driving module according to the battery temperature information, controls the output power of the cooling fan, and then makes the cooling air volume change with temperature, so that the cooling demand is met, and the waste of electric energy is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall principle structure schematic view of the embodiment of the utility model;

[0015] Figure 2 It is the principle structure schematic view of the temperature monitoring module of the embodiment of the utility model;

[0016] Figure 3 It is the principle structure schematic view of the fan driving module of the embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to make the above object, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0018] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] In the description of the present application, the description of the terms "embodiment", "one embodiment" and "one embodiment" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0020] As Figure 1 As shown in the present application, a kind of energy storage protection system, comprising: main control module, switch module, charging module, temperature monitoring module and fan driving module, the input end of the switch module is connected with external power supply interface, output end is connected with the input end of the charging module, controlled end is connected with the main control module, the output end of the charging module is connected with the energy storage battery, the temperature monitoring module is connected with the main control module, for the energy storage battery temperature information detected is transferred to the main control module, the controlled end of the fan driving module is connected with the main control module, output end is connected with cooling fan, the main control module is according to the energy storage battery temperature information received, corresponding drive signal is sent to the fan driving module, the power size of the cooling fan is controlled.

[0021] It should be noted that when the charging module charges the energy storage battery, the battery surface temperature is monitored in real time by multi-point infrared temperature measurement and transmitted to the main control module, the main control module sends corresponding control signals to the fan driving module according to the battery temperature information, controls the output power of the cooling fan, and then the cooling air volume changes with the temperature, which meets the cooling demand while avoiding waste of electric energy. When the battery temperature is too high and exceeds the adjustment set value, the main control module will also cut off the charging power supply through the switch module, and at the same time make the fan run at full power for cooling, wherein the switch module can use the closing point of the relay as a switch, which is usually in a normal on state. When the main control module sends a signal and the relay acts, the connection between the external power supply interface and the charging module is cut off.

[0022] In an embodiment of the present application, the energy storage protection system further comprises an auxiliary power supply module, the input end of the auxiliary power supply module is connected to the external power supply interface, and the output end provides working voltage for the main control module and the temperature monitoring module.

[0023] It should be noted that, as shown in Figure 1 The auxiliary power supply module is used to provide working voltage for chips and elements in the auxiliary modules such as the switch module, the charging module, the temperature monitoring module and the fan driving module. The auxiliary power supply module can include a rectifier bridge circuit and a voltage stabilizing chip circuit. First, the alternating current power input from the external power supply interface is rectified, and then converted into 3.3V and 24V direct current power by the voltage stabilizing chip for use in the subsequent circuit.

[0024] In an embodiment of the present application, the temperature monitoring module comprises a first analog selection switch and a plurality of temperature detection units, each temperature detection unit corresponds to an energy storage battery temperature collection point, the first analog selection switch has a plurality of input ports, each output port of the first analog selection switch is connected to a temperature detection unit, the controlled end is connected to the output end of the main control module, and the output end is connected to the signal input end of the main control module.

[0025] It should be noted that using multiple temperature detection units can realize temperature collection of multiple points of the energy storage battery and obtain more accurate temperature information. The analog selection switch is a switch that can switch the input port connection according to the selection signal. Here, the main control module sends a signal to the controlled end of the first analog selection switch through the selection switch, so that it switches at a certain frequency, and the information of each point is switched to the main control module in turn. In this way, in a large energy storage device, when the battery monitoring points are more, the receiving ports of the main control module can be reduced, and multiple point monitoring can be realized by circular rotation. The analog selection switch has multiple types such as 8 bits and 16 bits, which can be selected according to the demand. When the points are more, multiple analog selection switches can also be multiplexed.

[0026] In an embodiment of the utility model, the temperature monitoring module further includes a first switch tube and a first signal amplification circuit, the first signal amplification circuit is arranged between the output end of the first analog selection switch and the signal input end of the main control module, the input end of the first switch tube is connected with the auxiliary power module, the controlled end is connected with the output of the main control module, and the output end is respectively connected with the power end of each temperature detection unit.

[0027] It should be noted that the received temperature signal is amplified and filtered by the first signal amplification circuit and then given to the main control module, so that the main control module is convenient to receive, and the power supply of the temperature detection unit can be controlled by the main control module through the first switch tube, so that the temperature detection unit can be turned off when not needed.

[0028] In an embodiment of the utility model, the temperature detection unit adopts a thermoelectric pile infrared sensor.

[0029] It should be noted that the infrared temperature measurement is carried out by using the thermoelectric pile infrared sensor, and the principle of thermal imaging collection is that the infrared thermoelectric pile sensor converts infrared energy into an electric signal after receiving the energy emitted by the surface of an object, and the model of the thermoelectric pile infrared sensor is various, such as HS-LX-PN PN1365.

[0030] In an embodiment of the utility model, the fan driving module includes a first optoelectronic coupler, a first silicon controlled rectifier, a first safety tube and a fan interface, the input end of the first optoelectronic coupler is connected with the output end of the main control module, the output end is connected with the controlled end of the first silicon controlled rectifier, the first silicon controlled rectifier, the fan interface is used for connecting the cooling fan, so that the first power terminal of the cooling fan is connected with the positive electrode of the external power supply through the fan interface and the first safety tube, and the second power terminal is connected with the negative electrode of the external power supply through the first silicon controlled rectifier.

[0031] It should be noted that, as shown in Figure 3 The control signal emitted by the main control module is isolated by the first optoelectronic coupler U2 and then output to the controlled end of the first silicon controlled rectifier Q1, so as to control the conduction angle of the first silicon controlled rectifier Q1 and further control the working power of the cooling fan, control the air volume, and match the battery temperature.

[0032] In an embodiment of the utility model, the fan driving module further includes an RC filter circuit, and the RC filter circuit is connected in parallel across the first silicon controlled rectifier.

[0033] It should be noted that, as shown in Figure 3 The RC filter circuit is composed of a resistor R1 and a capacitor C3 in series.

[0034] In an embodiment of the utility model, energy storage protection system still includes communication alarm module, communication alarm module is connected with main control module to pass on the overtemperature alarm information that main control module sent to user terminal.

[0035] Need explanation, communication alarm module can adopt WIFI, 4G and multiple communication modes, by setting communication alarm module, the remote communication of main control module and user terminal is realized, when overtemperature cut-off switch module, main control module will also send information to user.

[0036] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. An energy storage protection system, characterized by, The application relates to a power supply device for a storage battery, which comprises a main control module, a switch module, a charging module, a temperature monitoring module and a fan driving module, wherein the input end of the switch module is connected with an external power supply interface, the output end of the switch module is connected with the input end of the charging module, the controlled end of the switch module is connected with the main control module, the output end of the charging module is connected with a storage battery, the temperature monitoring module is connected with the main control module and is used for transmitting detected storage battery temperature information to the main control module, the controlled end of the fan driving module is connected with the main control module, and the output end of the fan driving module is connected with a cooling fan; the main control module sends corresponding driving signals to the fan driving module according to the received storage battery temperature information, so as to control the power of the cooling fan. The application further comprises an auxiliary power supply module, the input end of the auxiliary power supply module is connected with the external power supply interface, and the output end of the auxiliary power supply module provides working voltage for the main control module and the temperature monitoring module.

2. The energy storage protection system of claim 1, wherein, The temperature monitoring module comprises a first analog selection switch and a plurality of temperature detection units, each temperature detection unit corresponds to a storage battery temperature collection point, the first analog selection switch has a plurality of input ports, each output port of the first analog selection switch is connected with a temperature detection unit, the controlled end of the first analog selection switch is connected with the output end of the main control module, and the output end of the first analog selection switch is connected with the signal input end of the main control module.

3. The energy storage protection system of claim 2, wherein, The temperature monitoring module further comprises a first switch tube and a first signal amplification circuit, the first signal amplification circuit is arranged between the output end of the first analog selection switch and the signal input end of the main control module, the input end of the first switch tube is connected with the auxiliary power supply module, the controlled end of the first switch tube is connected with the output end of the main control module, and the output end of the first switch tube is connected with the power supply end of each temperature detection unit.

4. The energy storage protection system of claim 3, wherein, The temperature detection unit adopts a thermoelectric pile infrared sensor.

5. The energy storage protection system of claim 4, wherein, The fan driving module comprises a first optoelectronic coupler, a first thyristor, a first safety tube and a fan interface, the input end of the first optoelectronic coupler is connected with the output end of the main control module, the output end of the first optoelectronic coupler is connected with the controlled end of the first thyristor, the fan interface is used for connecting the cooling fan, the first power terminal of the cooling fan is connected with the positive electrode of an external power supply through the fan interface and the first safety tube, and the second power terminal of the cooling fan is connected with the negative electrode of the external power supply through the first thyristor.

6. The energy storage protection system of claim 5, wherein, The fan driving module further comprises an RC filter circuit, and the RC filter circuit is connected in parallel across the first thyristor.

7. The energy storage protection system of claim 6, wherein, The application further comprises a communication alarm module, the communication alarm module is connected with the main control module and is used for transmitting over-temperature alarm information sent by the main control module to a user terminal.

8. The energy storage protection system of claim 1, wherein, ​

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