Control circuit of energy storage monomer

Abstract

The utility model discloses a control circuit of an energy storage monomer, which comprises a first rectification unit, a temperature detection unit, an energy storage monomer deformation detection unit, a transistor switch unit, a fan and a single chip microcomputer, and is characterized in that the first rectification unit is electrically connected with the energy storage monomer and the energy storage monomer deformation detection unit; the temperature detection unit is electrically connected with the first rectification unit and is used for detecting the temperature of the energy storage monomer; the energy storage monomer deformation detection unit is used for short-circuiting the energy storage monomer when the deformation of the energy storage monomer reaches a preset deformation quantity; the transistor switch unit is electrically connected with the fan and used for controlling the fan to work; the single-chip microcomputer is electrically connected with the temperature detection unit and the transistor switch unit, and is used for controlling the transistor switch unit to be turned on when the temperature of the energy storage monomer reaches a preset value. The device has the advantages of being simple in structure, high in reliability and convenient to popularize and apply.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage power supplies, and particularly relates to a control circuit for an energy storage cell. Background Art

[0002] Energy storage is the storage of energy, which refers to the cyclic process of storing energy through a medium or device and releasing it when needed. With the development of electrochemical energy storage technology, the energy density is getting higher and higher. In particular, for lithium-ion batteries, they can achieve a very high energy density. In the working state, ions inside the lithium-ion battery move at high speed and generate electrochemical reactions, resulting in an increase in the internal temperature of the lithium-ion battery. If the heat cannot be discharged in time, there is a risk of thermal runaway. Therefore, for energy storage cells such as lithium-ion batteries, the control of temperature and heat is extremely important. Therefore, a control circuit for an energy storage cell becomes necessary. However, the existing control circuit for an energy storage cell has a complex structure and low reliability. Summary of the Utility Model

[0003] The technical problem solved by the utility model is to provide a control circuit for an energy storage cell with a simple structure and high reliability.

[0004] The utility model provides a control circuit for an energy storage cell, including a first rectification unit, a temperature detection unit, an energy storage cell deformation detection unit, a transistor switch unit, a fan and a single-chip microcomputer. The first rectification unit is electrically connected to the energy storage cell and the energy storage cell deformation detection unit; the temperature detection unit is electrically connected to the first rectification unit and is used to detect the temperature of the energy storage cell; the energy storage cell deformation detection unit is used to short-circuit the energy storage cell when the deformation of the energy storage cell reaches a preset deformation amount; the transistor switch unit is electrically connected to the fan and is used to control the operation of the fan; the single-chip microcomputer is electrically connected to the temperature detection unit and the transistor switch unit and is used to control the transistor switch unit to turn on when the temperature of the energy storage cell reaches a preset value.

[0005] Preferably, the energy storage cell deformation detection unit includes a conductive sheet, a first thyristor, a first resistor and a first diode. A gap is formed between the conductive sheet and the energy storage cell; the anode of the first thyristor is electrically connected to the first rectification unit, the cathode of the first thyristor is grounded, and the control electrode of the first thyristor is electrically connected to the conductive sheet; the first end of the first resistor is electrically connected to the anode of the first thyristor, the second end of the first resistor is electrically connected to the anode of the first diode, the cathode of the first diode is electrically connected to the conductive sheet, and the area of the outer surface of the energy storage cell corresponding to the conductive sheet is grounded.

[0006] Preferably, the temperature detection unit includes a second resistor and a third resistor. The first end of the second resistor is electrically connected to the rectification unit, and the second end of the second resistor is electrically connected to the first end of the third resistor. The first end of the third resistor is electrically connected to the single-chip microcomputer, and the second end of the third resistor is grounded. Among them, the third resistor is a thermistor, and the thermistor is used to detect the temperature of the energy storage monomer.

[0007] Preferably, the second resistor is a potentiometer. The first end of the potentiometer is electrically connected to the rectification unit, and the second end of the potentiometer is electrically connected to the first end of the third resistor.

[0008] Preferably, the transistor switch unit includes a second thyristor, a second diode, and a first triode. The anode of the second thyristor is electrically connected to the fan, the cathode of the second thyristor is grounded, the control electrode of the second thyristor is electrically connected to the cathode of the second diode, the anode of the second diode is electrically connected to the emitter of the first triode, the collector of the first triode is electrically connected to the first rectification unit, and the base of the first triode is electrically connected to the single-chip microcomputer.

[0009] Preferably, the transistor switch unit further includes a third diode and a fourth resistor. The anode of the third diode is electrically connected to the base of the first triode, and the cathode of the third diode is electrically connected to the collector of the first triode. The first end of the fourth resistor is electrically connected to the base of the first triode, and the second end of the fourth resistor is electrically connected to the collector of the first triode.

[0010] Preferably, the transistor switch unit further includes a second triode and a fifth resistor. The collector of the second triode is electrically connected to the base of the first triode, the emitter of the second triode is grounded, the first end of the fifth resistor is electrically connected to the base of the second triode, and the second end of the fifth resistor is grounded.

[0011] Preferably, the control circuit of the energy storage monomer further includes a second rectification unit. The second rectification unit is electrically connected to the fan and the anode of the second thyristor, and is used to drive the fan to work when the second thyristor is turned on.

[0012] Preferably, the first rectification unit includes a fourth diode, a fifth diode, and a sixth resistor. The anode of the fourth diode is used to be electrically connected to a power supply, the cathode of the fourth diode is electrically connected to the first end of the sixth resistor, the second end of the sixth resistor is electrically connected to the anode of the fifth diode, and the cathode of the fifth diode is electrically connected to the energy storage monomer deformation detection unit and the single-chip microcomputer.

[0013] Preferably, the control circuit of the energy storage monomer further includes a filter circuit, which includes a capacitor and a seventh resistor. The first end of the capacitor is electrically connected to the fan, the second end of the capacitor is electrically connected to the first end of the seventh resistor, and the second end of the seventh resistor is grounded.

[0014] The utility model has the following beneficial effects: Through the cooperation among the temperature detection unit, the energy storage monomer deformation detection unit, the transistor switch unit, the fan and the single-chip microcomputer, the temperature detection unit is electrically connected to the first rectification unit and is used for detecting the temperature of the energy storage monomer. The energy storage monomer deformation detection unit is used for short-circuiting the energy storage monomer when the deformation of the energy storage monomer reaches a preset deformation amount. The transistor switch unit is electrically connected to the fan and is used for controlling the operation of the fan. The single-chip microcomputer is electrically connected to the temperature detection unit and the transistor switch unit and is used for controlling the transistor switch unit to turn on when the temperature of the energy storage monomer reaches a preset value. Therefore, when the temperature of the energy storage monomer is greater than the preset value, the single-chip microcomputer controls the fan to operate to cool the energy storage monomer. When the temperature of the energy storage monomer continues to rise until the deformation of the energy storage monomer reaches the preset deformation amount, the energy storage monomer is short-circuited so that the power supply no longer charges the energy storage monomer. This circuit has the advantages of simple structure, high reliability and being convenient for popularization and application. Description of the Drawings

[0015] Figure 1 It is the circuit diagram of the control circuit of the energy storage monomer of the utility model. Detailed Embodiments

[0016] The utility model will be described in detail below with reference to the drawings and embodiments. It should be noted that if there is no conflict, the embodiments of the utility model and each feature in the embodiments can be combined with each other, and all are within the protection scope of the utility model.

[0017] Please refer to Figure 1 , the utility model provides a control circuit of an energy storage monomer, which includes a first rectification unit 1, a temperature detection unit 2, an energy storage monomer deformation detection unit 3, a transistor switch unit 4, a fan 5, a single-chip microcomputer 6 and a second rectification unit 7. The first rectification unit 1 is electrically connected to the energy storage monomer T and the energy storage monomer deformation detection unit 3. The temperature detection unit 2 is electrically connected to the first rectification unit 1 and is used for detecting the temperature of the energy storage monomer T. The energy storage monomer deformation detection unit 3 is used for short-circuiting the energy storage monomer T when the deformation of the energy storage monomer T reaches a preset deformation amount. The transistor switch unit 4 is electrically connected to the fan 5 and is used for controlling the operation of the fan 5. The single-chip microcomputer 6 is electrically connected to the temperature detection unit 2 and the transistor switch unit 4 and is used for controlling the transistor switch unit 4 to turn on when the temperature of the energy storage monomer T reaches a preset value.

[0018] Among them, the first rectifying unit 1 includes a fourth diode D4, a fifth diode D5 and a sixth resistor R6. The anode of the fourth diode D4 is used to be electrically connected to a power supply. The cathode of the fourth diode D4 is electrically connected to the first end of the sixth resistor R6. The second end of the sixth resistor R6 is electrically connected to the anode of the fifth diode D5. The cathode of the fifth diode D5 is electrically connected to the energy storage monomer deformation detection unit 3 and the single-chip microcomputer 6. In this embodiment, the fifth diode D5 is a light-emitting diode, so the working state can be indicated, which is convenient for users to use.

[0019] The temperature detection unit 2 includes a second resistor R2 and a third resistor R3. The first end of the second resistor R2 is electrically connected to the anode of the fifth diode D5 of the rectifying unit. The second end of the second resistor R2 is electrically connected to the first end of the third resistor R3. The first end of the third resistor R3 is electrically connected to the single-chip microcomputer 6. The second end of the third resistor R3 is grounded. Among them, the third resistor R3 is a thermistor, and the thermistor is used to detect the temperature of the energy storage monomer. In this embodiment, the second resistor R2 is a potentiometer. The first end of the potentiometer is electrically connected to the first rectifying unit 1. The second end of the potentiometer is electrically connected to the first end of the third resistor R3. By setting the resistance of the potentiometer, the temperature can be set and controlled, so it can be adjusted for different environments, improving the breadth of application.

[0020] The energy storage monomer deformation detection unit 3 includes a conductive sheet P, a first thyristor RD1, a first resistor R1 and a first diode D1. A gap is formed between the conductive sheet P and the energy storage monomer. The anode of the first thyristor RD1 is electrically connected to the first rectifying unit 1. The cathode of the first thyristor RD1 is grounded. The control electrode of the first thyristor RD1 is electrically connected to the conductive sheet P. The first end of the first resistor R1 is electrically connected to the anode of the first thyristor RD1. The second end of the first resistor R1 is electrically connected to the anode of the first diode D1. The cathode of the first diode D1 is electrically connected to the conductive sheet P. The area of the outer surface of the energy storage monomer corresponding to the conductive sheet P is grounded. Therefore, when the energy storage monomer expands outward to contact the conductive sheet P, the first thyristor RD1 conducts, and the current supplying power to the energy storage monomer basically flows away through the first thyristor RD1, so the energy storage monomer can be protected. This circuit has the advantages of simple structure and low cost.

[0021] The transistor switch unit 4 includes a second thyristor RD2, a second diode D2, and a first triode Q1. The anode of the second thyristor RD2 is electrically connected to the fan 5, the cathode of the second thyristor RD2 is grounded, the control electrode of the second thyristor RD2 is electrically connected to the cathode of the second diode D2, the anode of the second diode D2 is electrically connected to the emitter of the first triode Q1, the collector of the first triode Q1 is electrically connected to the first rectification unit 1, and the base of the first triode Q1 is electrically connected to the single-chip microcomputer 6. When the temperature of the energy storage cell T reaches a preset value, the first triode Q1 of the transistor switch unit 4 is turned on, thereby turning on the fan.

[0022] The transistor switch unit 4 further includes a third diode D3 and a fourth resistor R4. The anode of the third diode D3 is electrically connected to the base of the first triode Q1, and the cathode of the third diode D3 is electrically connected to the collector of the first triode Q1. The first end of the fourth resistor R4 is electrically connected to the base of the first triode Q1, and the second end of the fourth resistor R4 is electrically connected to the collector of the first triode Q1. By providing the third diode D3, the reliability of the circuit can be increased.

[0023] The transistor switch unit 4 further includes a second triode Q2 and a fifth resistor R5. The collector of the second triode Q2 is electrically connected to the base of the first triode Q1, the emitter of the second triode Q2 is grounded, the first end of the fifth resistor R5 is electrically connected to the base of the second triode Q2, and the second end of the fifth resistor R5 is grounded. It can further improve the reliability of the circuit.

[0024] The second rectification unit 7 is electrically connected to the fan 5 and the anode of the second thyristor RD2, and is used to drive the fan 5 to work when the second thyristor RD2 is turned on. The transistor switch unit 4 is electrically connected to the fan 5 through the second rectification unit 7. Since the second rectification unit 7 is a prior art, its structure will not be described in detail here.

[0025] The control circuit of the energy storage cell further includes a filter circuit 8. The filter circuit 8 includes a capacitor C and a seventh resistor R7. The first end of the capacitor C is electrically connected to the fan 5, the second end of the capacitor C is electrically connected to the first end of the seventh resistor R7, and the second end of the seventh resistor R7 is grounded.

[0026] In summary, through the cooperation among the temperature detection unit 2, the energy storage monomer deformation detection unit 3, the transistor switch unit 4, the fan 5 and the single-chip microcomputer 6, the temperature detection unit 2 is electrically connected to the first rectification unit 1 and is used to detect the temperature of the energy storage monomer. The energy storage monomer deformation detection unit 3 is used to short-circuit the energy storage monomer when the deformation of the energy storage monomer reaches a preset deformation amount. The transistor switch unit 4 is electrically connected to the fan 5 and is used to control the operation of the fan 5. The single-chip microcomputer 6 is electrically connected to the temperature detection unit 2 and the transistor switch unit 4 and is used to control the transistor switch unit 4 to turn on when the temperature of the energy storage monomer reaches a preset value. Therefore, when the temperature of the energy storage monomer is greater than the preset value, the single-chip microcomputer 6 controls the fan 5 to operate to cool the energy storage monomer. When the temperature of the energy storage monomer continues to rise until the deformation of the energy storage monomer reaches the preset deformation amount, the energy storage monomer is short-circuited so that the power supply no longer charges the energy storage monomer. This circuit has the advantages of simple structure, high reliability and being convenient for popularization and application.

[0027] The control circuit of the energy storage monomer provided by the present invention has been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification is only the implementation manner of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, is similarly included in the patent protection scope of the present invention and should not be construed as a limitation to the present invention.

Claims

1. A control circuit for an energy storage unit, characterized in that: It includes a first rectifier unit, a temperature detection unit, an energy storage monomer deformation detection unit, a transistor switch unit, a fan and a single-chip microcomputer, wherein the first rectifier unit is electrically connected to the energy storage monomer and the energy storage monomer deformation detection unit; the temperature detection unit is electrically connected to the first rectifier unit, and is used to detect the temperature of the energy storage monomer; the energy storage monomer deformation detection unit is used to short-circuit the energy storage monomer when the energy storage monomer is deformed to a preset deformation amount; the transistor switch unit is electrically connected to the fan, and is used to control the fan to work; the single-chip microcomputer is electrically connected to the temperature detection unit and the transistor switch unit, and is used to control the transistor switch unit to turn on when the temperature of the energy storage monomer reaches a preset value; The energy storage monomer deformation detection unit includes a conductive sheet, a first thyristor, a first resistor and a first diode, wherein a gap is formed between the conductive sheet and the energy storage monomer; an anode of the first thyristor is electrically connected to the first rectifying unit, a cathode of the first thyristor is grounded, and a control electrode of the first thyristor is electrically connected to the conductive sheet; a first end of the first resistor is electrically connected to the anode of the first thyristor, a second end of the first resistor is electrically connected to the anode of the first diode, a cathode of the first diode is electrically connected to the conductive sheet, and an area corresponding to the conductive sheet on the outer surface of the energy storage monomer is grounded; The temperature detection unit includes a second resistor and a third resistor, wherein the first end of the second resistor is electrically connected to the rectifier unit, and the second end of the second resistor is electrically connected to the first end of the third resistor; the first end of the third resistor is electrically connected to the single chip computer, and the second end of the third resistor is grounded; wherein the third resistor is a thermistor, and the thermistor is used to detect the temperature of the energy storage unit.

2. The control circuit of the energy storage unit according to claim 1, characterized in that: The second resistor is a potentiometer, a first end of the potentiometer is electrically connected to the rectifying unit, and a second end of the potentiometer is electrically connected to a first end of the third resistor.

3. The control circuit of the energy storage unit according to claim 1, characterized in that: The transistor switch unit includes a second thyristor, a second diode and a first triode, the anode of the second thyristor is electrically connected to the fan, the cathode of the second thyristor is grounded, the control electrode of the second thyristor is electrically connected to the cathode of the second diode, the anode of the second diode is electrically connected to the emitter of the first triode, the collector of the first triode is electrically connected to the first rectifier unit, and the base of the first triode is electrically connected to the single chip computer.

4. The control circuit of the energy storage unit as claimed in claim 3, characterized in that: The transistor switch unit also includes a third diode and a fourth resistor, the anode of the third diode is electrically connected to the base of the first transistor, and the cathode of the third diode is electrically connected to the collector of the first transistor; the first end of the fourth resistor is electrically connected to the base of the first transistor, and the second end of the fourth resistor is electrically connected to the collector of the first transistor.

5. The control circuit of the energy storage unit as claimed in claim 3, characterized in that: The transistor switch unit also includes a second transistor and a fifth resistor, the collector of the second transistor is electrically connected to the base of the first transistor, the emitter of the second transistor is grounded, the first end of the fifth resistor is electrically connected to the base of the second transistor, and the second end of the fifth resistor is grounded.

6. The control circuit of the energy storage unit as claimed in claim 3, characterized in that: The control circuit of the energy storage unit further includes a second rectifying unit, which is electrically connected to the fan and the anode of the second thyristor and is used to drive the fan to work when the second thyristor is turned on.

7. The control circuit of the energy storage unit according to claim 1, characterized in that: The first rectifier unit includes a fourth diode, a fifth diode and a sixth resistor, the anode of the fourth diode is used to be electrically connected to a power supply, the cathode of the fourth diode is electrically connected to the first end of the sixth resistor, the second end of the sixth resistor is electrically connected to the anode of the fifth diode, and the cathode of the fifth diode is electrically connected to the energy storage monomer deformation detection unit and the single-chip computer.

8. The control circuit of the energy storage unit according to claim 1, characterized in that: The control circuit of the energy storage unit also includes a filter circuit, which includes a capacitor and a seventh resistor. The first end of the capacitor is electrically connected to the fan, the second end of the capacitor is electrically connected to the first end of the seventh resistor, and the second end of the seventh resistor is grounded.

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