Super capacitor module group line sequence detection circuit

Abstract

The invention provides a super-capacitor module group line sequence detection circuit, and relates to the field of super-capacitor module group line sequence detection circuits. The super-capacitor module line sequence detection circuit comprises a super-capacitor module and line sequence detection units, the super-capacitor module comprises a plurality of super-capacitor monomers connected in series, each super-capacitor monomer is provided with a positive electrode and a negative electrode, and the number of the line sequence detection units is the same as that of the super-capacitor monomers. The line sequence detection unit comprises a light emitting diode, a current-limiting resistor R1, an isolation diode D1 and at least one connecting end CELL-X. According to the super capacitor module group line sequence detection circuit provided by the invention, simple line sequence detection is realized by using the characteristic of low voltage of the super capacitor monomer and the one-way conduction characteristics of the light emitting diode and the isolation diode, line sequence errors in a CMS system are avoided, and equipment damage is prevented.

Description

Technical Field

[0001] The present invention relates to the field of supercapacitor module line sequence detection circuits, and in particular to a supercapacitor module line sequence detection circuit. Background Art

[0002] A supercapacitor module is a type of module consisting of more than two supercapacitor cells connected in series. During the use of supercapacitors, since the cell voltage is relatively low (most are below 3V), multiple cells need to be connected in series to form a module or multiple modules in order to be used in some engineering scenarios. In addition, the material properties of supercapacitor cells are that they cannot be charged beyond the cell voltage, otherwise it will cause permanent damage to the cell or explosion safety risks. Therefore, the supercapacitor cell voltage status information must be monitored in real time during application.

[0003] In a supercapacitor monitoring module, wiring harnesses are required to connect to each cell and connect to an external CMS via connectors for real-time monitoring. However, due to the large number of supercapacitor cells in the module, wiring harness terminals are prone to disconnection and disorder. Once this occurs, the CMS cannot collect data, potentially damaging it.

[0004] In order to solve the above problems, a supercapacitor module line sequence monitoring circuit is designed. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a supercapacitor module line sequence detection circuit, which solves the problem that in the process of wiring harness terminals of supercapacitor modules, due to the large number of supercapacitor monomers, the wiring harness is very likely to be discontinuous and disordered, resulting in the inability to collect CMS data and damaging the CMS.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a supercapacitor module line sequence detection circuit, comprising a supercapacitor module and a line sequence detection unit, wherein the supercapacitor module comprises a plurality of supercapacitor cells connected in series, each of the supercapacitor cells having a positive electrode and a negative electrode, and the number of the line sequence detection units is the same as the number of the supercapacitor cells;

[0009] The line sequence detection unit includes a light emitting diode, a current limiting resistor R1, an isolation diode D1 and at least one connection terminal CELL-X, where X is 0, 1, 2, 3, ...;

[0010] The light-emitting diode, the current-limiting resistor R1 and the isolation diode D1 form a series circuit, and the series circuit is connected between the connection terminal CELL-X and the common negative electrode of the supercapacitor module;

[0011] Through the above technical solution, when the positive electrode of the supercapacitor cell is correctly connected through the connection terminal CELL-X, the voltage of the supercapacitor cell can drive the light-emitting diode to emit light, and when the positive electrode of the corresponding supercapacitor cell is connected to its designated connection terminal CELL-X, the voltage of the supercapacitor cell is applied to the series circuit of the isolation diode D1, the current-limiting resistor R1 and the light-emitting diode. If the voltage is sufficient, that is, the voltage of the supercapacitor cell is less than three volts, current flows through this path, the light-emitting diode works and emits light, indicating that the connection of the supercapacitor cell is correct.

[0012] Preferably, the anode of the isolation diode D1 is connected to the connection terminal CELL-X, and the cathode of the isolation diode D1 is connected to the current limiting resistor R1;

[0013] Through the above technical solution, the forward conduction of the isolation diode D1 allows the voltage from the connection terminal CELL-X to pass through, and the reverse cutoff characteristic of the isolation diode D1 is utilized to prevent the reverse current or voltage that may come from other paths from affecting the current detection unit. The specific connection direction of the isolation diode in the circuit is clarified, and its unidirectional conduction characteristic is utilized to ensure that the current flows in the expected direction and provide certain reverse voltage protection.

[0014] Preferably, the current limiting resistor R1 is connected in series between the isolation diode D1 and the light emitting diode;

[0015] Through the above technical solution, the current-limiting resistor R1 is selected according to the voltage of the supercapacitor cell and the rated current value of the LED, and stabilizes the operating current of the light-emitting diode when the voltage of the supercapacitor cell changes, thereby protecting the light-emitting diode and stabilizing the light emission of the light-emitting diode, thereby limiting the current flowing through the light-emitting diode and preventing the light-emitting diode from being damaged due to excessive current.

[0016] Preferably, the anode of the light-emitting diode is connected to the current-limiting resistor R1, and the cathode of the light-emitting diode is connected to the common negative electrode of the supercapacitor module;

[0017] Through the above technical solution, the forward conduction characteristic of the light-emitting diode is utilized to make the light-emitting diode emit light when a forward voltage is applied to both ends, and the cathode of the light-emitting diode is connected to the common negative electrode to form a complete current loop.

[0018] Preferably, when the positive electrode of the supercapacitor cell corresponding to the line sequence detection unit is not connected through the connection terminal CELL-X or is disconnected, the light-emitting diode does not emit light, which is used to indicate a disconnection fault;

[0019] Through the above technical solution, if the connection terminal CELL-X is not connected to the positive pole of any monomer, or the connection is interrupted, the connection terminal CELL-X of the line sequence detection unit has no voltage relative to the common negative pole of the supercapacitor module, and the current cannot flow through the light-emitting diode, the current-limiting resistor R1 and the isolation diode D1. Therefore, the light-emitting diode does not light up, indicating that there is a short circuit in the channel.

[0020] Preferably, when the positive electrode of the supercapacitor cell corresponding to the line sequence detection unit is connected to the wrong connection terminal CELL-X, the light-emitting diode does not emit light, and the light-emitting brightness of the light-emitting diode corresponding to at least one other correctly connected line sequence detection unit becomes abnormal, such as becoming brighter, darker, or inconsistent, to indicate a line sequence error;

[0021] Through the above technical solution, when a supercapacitor cell is mistakenly connected to a non-corresponding connection terminal CELL-X, the voltage of the supercapacitor cell will try to pass through the wrong path. Due to the unidirectional conductivity of the isolation diode D1 and the light-emitting diode, the supercapacitor cell may not be able to light up the light-emitting diode corresponding to its wrong connection terminal CELL-X. At the same time, the voltage of the supercapacitor cell may pass through other paths and affect the entire common circuit, causing abnormal changes in the brightness of other normal light-emitting diodes, thereby indicating that there is a line sequence disorder.

[0022] (3) Beneficial effects

[0023] The present invention provides a supercapacitor module line sequence detection circuit, which has the following beneficial effects:

[0024] 1. The present invention provides a supercapacitor module line sequence detection circuit. The detection circuit utilizes the low voltage characteristic of supercapacitor cells and the unidirectional conduction characteristics of light-emitting diodes and isolation diodes to achieve simple line sequence detection and avoid the problems of intermittent and disordered wiring due to the large number of supercapacitor cells in the process of wiring harness terminals of supercapacitor modules, thereby preventing line sequence errors in the CMS system from causing equipment damage.

[0025] 2. The present invention provides a supercapacitor module line sequence detection circuit. The design of the detection circuit avoids complex control circuits, thereby reducing costs, and can detect and prompt errors in the pre-detection stage to prevent incorrect connections from entering downstream devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of a supercapacitor module of the present invention;

[0027] Figure 2 Schematic diagram of the control circuit of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1-2 As shown, an embodiment of the present invention provides a supercapacitor module line sequence detection circuit, including a supercapacitor module and a line sequence detection unit, wherein the supercapacitor module includes a plurality of supercapacitor cells connected in series, each supercapacitor cell having a positive electrode and a negative electrode, and the number of the line sequence detection units is the same as the number of the supercapacitor cells;

[0030] The line sequence detection unit includes a light emitting diode, a current limiting resistor R1, an isolation diode D1 and at least one connection terminal CELL-X, where X is 0, 1, 2, 3, ...;

[0031] The light-emitting diode, the current-limiting resistor R1 and the isolation diode D1 form a series circuit, and the series circuit is connected between the connection terminal CELL-X and the common negative electrode of the supercapacitor module;

[0032] The supercapacitor cell voltage is low, usually not exceeding 3V, and the light-emitting diode and the isolation diode have a unidirectional conduction characteristic, which can realize low-cost and simple line sequence detection and avoid device damage caused by line sequence errors when connecting to more complex systems, such as CMS.

[0033] The anode of the isolation diode D1 is connected to the connection terminal CELL-X, and the cathode of the isolation diode D1 is connected to the current limiting resistor R1, so that the forward conduction of the isolation diode D1 allows the voltage from the connection terminal CELL-X to pass through, and utilizes the reverse cutoff characteristic of the isolation diode D1 to prevent the reverse current or voltage that may come from other paths from affecting the current detection unit, clarifies the specific connection direction of the isolation diode in the circuit, utilizes its unidirectional conduction characteristic, ensures that the current flows in the expected direction, and provides certain reverse voltage protection, the current limiting resistor R1 is connected in series between the isolation diode D1 and the light emitting diode, so that the current limiting resistor R1 It is selected according to the voltage of the supercapacitor cell and the rated current value of the LED, and stabilizes the working current of the light-emitting diode when the voltage of the supercapacitor cell changes, thereby protecting the light-emitting diode and stabilizing the light emission of the light-emitting diode, thereby limiting the current flowing through the light-emitting diode to prevent the light-emitting diode from being damaged due to excessive current. The anode of the light-emitting diode is connected to the current-limiting resistor R1, and the cathode of the light-emitting diode is connected to the common negative electrode of the supercapacitor module. The forward conduction characteristic of the light-emitting diode is used to make the light-emitting diode emit light when a forward voltage is applied to both ends, and the cathode of the light-emitting diode is connected to the common negative electrode to form a complete current loop. The line sequence detection unit When the positive electrode of the supercapacitor monomer corresponding to the element is not connected through the connection terminal CELL-X or the connection is disconnected, the light-emitting diode does not light up, which is used to indicate a disconnection fault. If the connection terminal CELL-X is not connected to any monomer positive electrode, or the connection is interrupted, the connection terminal CELL-X of the line sequence detection unit has no voltage relative to the common negative electrode of the supercapacitor module, and the current cannot flow through the light-emitting diode, the current-limiting resistor R1 and the isolation diode D1. Therefore, the light-emitting diode does not light up, indicating that there is a circuit breaker in the channel. When the positive electrode of the supercapacitor monomer corresponding to the line sequence detection unit is connected to the wrong connection terminal CELL-X, the light-emitting diode does not light up, and at least one other positive electrode is disconnected. Abnormal brightness of the light-emitting diode corresponding to the incorrectly connected wire sequence detection unit, such as becoming brighter, darker or inconsistent, is used to indicate a wire sequence error. When a supercapacitor cell is mistakenly connected to a non-corresponding connection terminal CELL-X, the voltage of the supercapacitor cell will try to pass through the wrong path. Due to the unidirectional conductivity of the isolation diode D1 and the light-emitting diode, the supercapacitor cell may not be able to light up the light-emitting diode corresponding to its incorrect connection terminal CELL-X. At the same time, the voltage of the supercapacitor cell may pass through other paths and affect the entire common circuit, causing abnormal changes in the brightness of other normal light-emitting diodes, thereby indicating that there is a wire sequence disorder.

[0034] Working principle: First, a light-emitting diode, the current-limiting resistor R1, and the isolation diode D1 are formed into a series circuit. Then, the series circuit is connected between the connection terminal CELL-X and the common negative electrode of the supercapacitor module, and the common positive electrode of the supercapacitor module is connected to the circuit of the line sequence detection unit. When the positive electrode of the supercapacitor cell is correctly connected through the connection terminal CELL-X, the voltage of the supercapacitor cell can drive the light-emitting diode to emit light, and when the positive electrode of the corresponding supercapacitor cell is connected to its designated connection terminal CELL-X, the voltage of the supercapacitor cell is applied to the series circuit of the isolation diode D1, the current-limiting resistor R1, and the light-emitting diode. If the voltage is sufficient, that is, the voltage of the supercapacitor cell is less than three volts, current flows through this path, the light-emitting diode works and emits light, indicating that the connection of the supercapacitor cell is correct.

Claims

1. A supercapacitor module line sequence detection circuit, comprising a supercapacitor module and a line sequence detection unit, characterized in that: The supercapacitor module includes a plurality of supercapacitor cells connected in series, each supercapacitor cell has a positive electrode and a negative electrode, and the number of the line sequence detection units is the same as the number of the supercapacitor cells; The line sequence detection unit includes a light emitting diode, a current limiting resistor R1, an isolation diode D1 and at least one connection terminal CELL-X, where X is 0, 1, 2, 3, ...; The light emitting diode, the current limiting resistor R1 and the isolation diode D1 form a series circuit, and the series circuit is connected between the connection terminal CELL-X and the common negative electrode of the supercapacitor module.

2. The supercapacitor module line sequence detection circuit according to claim 1, characterized in that: An anode of the isolation diode D1 is connected to the connection terminal CELL-X, and a cathode of the isolation diode D1 is connected to the current limiting resistor R1.

3. The supercapacitor module line sequence detection circuit according to claim 1, characterized in that: The current limiting resistor R1 is connected in series between the isolation diode D1 and the light emitting diode.

4. The supercapacitor module line sequence detection circuit according to claim 1, characterized in that: The anode of the light emitting diode is connected to the current limiting resistor R1, and the cathode of the light emitting diode is connected to the common negative electrode of the supercapacitor module.

5. The supercapacitor module line sequence detection circuit according to claim 1, characterized in that: When the positive electrode of the supercapacitor cell corresponding to the line sequence detection unit is not connected through the connection terminal CELL-X or is disconnected, the light-emitting diode does not emit light, which is used to indicate a disconnection fault.

6. The supercapacitor module line sequence detection circuit according to claim 1, characterized in that: When the positive electrode of the supercapacitor cell corresponding to the line sequence detection unit is connected to the wrong connection terminal CELL-X, the light-emitting diode does not emit light, and the brightness of the light-emitting diode corresponding to at least one other correctly connected line sequence detection unit is abnormal, such as becoming brighter, darker or inconsistent, which is used to indicate a line sequence error.

7. The supercapacitor module line sequence detection circuit according to claim 1, characterized in that: The supercapacitor cell has a low voltage, usually not exceeding 3V, and the light emitting diode and the isolation diode have a unidirectional conduction characteristic.

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