CN112798985A - Battery pack voltage line sequence detection circuit - Google Patents
Battery pack voltage line sequence detection circuit Download PDFInfo
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- CN112798985A CN112798985A CN201911032449.5A CN201911032449A CN112798985A CN 112798985 A CN112798985 A CN 112798985A CN 201911032449 A CN201911032449 A CN 201911032449A CN 112798985 A CN112798985 A CN 112798985A
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Abstract
The invention discloses a battery pack voltage sequence detection circuit which comprises a first switch sub-circuit, a second switch sub-circuit, a voltage division circuit, a light emitting diode and a voltage protection sub-circuit. Through the disclosed battery pack voltage sequence detection circuit, the sequence of the battery module wire harness is detected, whether the connection of the sequence of the wire harness is correct is judged by whether the light emitting diode emits light, and the phenomenon that a fire disaster happens because the battery module and the wire harness in an error state are inserted into a battery management system to simulate the front end is avoided.
Description
Technical Field
The invention relates to the technical field of battery detection, in particular to a battery pack voltage line sequence detection circuit.
Background
The new energy battery is a device for converting chemical energy into electric energy, provides clean energy for equipment, reduces environmental pollution, and enables the battery to be widely popularized and applied. In the process of battery pack assembly, the polarity of each battery cell in the battery module and the line sequence of the battery sampling wire harness are detected separately.
However, in the process of assembling the battery pack, when the battery module and the connection harness are connected to the analog front end of the battery management system, if the line sequence is wrong or broken, the polarity in the battery module is wrong or the voltage of the battery is too high or too low, and the like, the analog front end, the harness and the battery can be damaged by directly connecting the analog front end, and a fire or even an explosion can be caused in serious cases.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a battery pack voltage sequence detection circuit for detecting whether a battery module and a sampling harness are correctly connected to an analog front end of a battery management system.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a battery pack voltage line sequence detection circuit includes: the voltage-dividing circuit comprises a first switch sub-circuit, a second switch sub-circuit, a voltage-dividing circuit, a light-emitting diode and a voltage protection sub-circuit;
the first input end of the first switch sub-circuit and the first input end of the second switch sub-circuit are connected to the anode of the battery pack;
the second input end of the first switch sub-circuit is connected with the control end of the second switch sub-circuit, and the second input end of the first switch sub-circuit and the second input end of the second switch sub-circuit are connected with the positive electrode and the negative electrode of the battery pack through the voltage protection sub-circuit;
the control end of the first switch sub-circuit is connected with the anode of the light-emitting diode, the cathode of the light-emitting diode is connected with the anode of the voltage protection sub-circuit, and the cathode of the electronic protection sub-circuit is connected with the cathode of the battery pack;
the voltage division circuit is connected with the first switch sub-circuit and the second switch sub-circuit and is used for dividing voltage of the first switch sub-circuit and the second switch sub-circuit;
when the voltage difference between the anode and the cathode of the battery pack is within the starting voltage range corresponding to the first switch sub-circuit, the first switch sub-circuit is started, so that the light-emitting diode emits light;
when the voltage difference between the anode and the cathode of the battery pack is larger than the starting voltage corresponding to the second switch sub-circuit, the second switch sub-circuit is started, so that the light-emitting diode is turned off.
Preferably, the first switching sub-circuit comprises a first transistor Q1 and a first resistor R1, and the second switching sub-circuit comprises a second transistor Q2;
the collector electrode of the first triode Q1 and the collector electrode of the second triode Q2 are connected with the positive electrode of the battery pack;
an emitter of the first triode Q1 is connected with one end of the resistor R1, and the other end of the resistor R1 is connected with the anode of the light-emitting diode;
the base electrode of the first triode Q1 is connected with the emitter electrode of the second triode Q2;
the base electrode of the first triode Q1 and the base electrode of the second triode Q2 are connected with the positive electrode and the negative electrode of the battery pack through the voltage protection sub-circuit;
the voltage division circuit is connected with the first transistor Q1 and the second transistor Q2 and is used for dividing the voltage of the first transistor Q1 and the second transistor Q2.
Preferably, the first transistor Q1 and the second transistor Q2 are PNP transistors.
Preferably, the voltage dividing circuit includes: a second resistor R2, a third resistor R3, a fourth resistor R4 and a fifth resistor R5;
one end of the second resistor R2 and one end of the fourth resistor R4 are connected with the anode of the battery pack;
the other end of the second resistor R2 is respectively connected with one end of the third resistor R3 and the base electrode of the first triode;
the other end of the fourth resistor R4 is connected with the base of the second triode and one end of the fifth resistor R5;
the other end of the third resistor R3, the other end of the fifth resistor R5 and the cathode of the light-emitting diode are connected with the anode of the electronic protection sub-circuit.
Preferably, the voltage protection sub-circuit comprises a diode;
the anode of the diode is connected with the cathode of the light-emitting diode, the other end of the resistor R3 and the other end of the resistor R5;
and the cathode of the diode is connected with the cathode of the battery pack.
Preferably, the resistance ranges of the second resistor R2, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 are: 100K Ω to 1000K Ω.
Preferably, the resistance of the second resistor R2 is 100K Ω, the resistance of the third resistor R3 is 400K Ω, the resistance of the fourth resistor R4 is 100K Ω, and the resistance of the fifth resistor R5 is 600K Ω.
Preferably, the starting voltage range corresponding to the first switch sub-circuit is greater than 0.6V.
Preferably, the starting voltage range corresponding to the second switch sub-circuit is greater than 0.6V.
According to the above content, the invention discloses a voltage sequence detection circuit for a battery pack, wherein a first input end of a first switch sub-circuit and a first input end of a second switch sub-circuit of the circuit are connected to the anode of the battery pack; the second input end of the first switch sub-circuit is connected with the control end of the second switch sub-circuit, and the second input end of the first switch sub-circuit and the second input end of the second switch sub-circuit are connected with the positive electrode and the negative electrode of the battery pack through the voltage protection sub-circuit; the control end of the first switch sub-circuit is connected with the anode of the light-emitting diode, the cathode of the light-emitting diode is connected with the anode of the voltage protection sub-circuit, and the cathode of the electronic protection sub-circuit is connected with the cathode of the battery pack; the voltage division circuit is connected with the first switch sub-circuit and the second switch sub-circuit and is used for dividing voltage of the first switch sub-circuit and the second switch sub-circuit; when the voltage difference between the anode and the cathode of the battery pack is within the starting voltage range corresponding to the first switch sub-circuit, the first switch sub-circuit is started, so that the light-emitting diode emits light; when the voltage difference between the anode and the cathode of the battery pack is larger than the starting voltage corresponding to the second switch sub-circuit, the second switch sub-circuit is started, so that the light-emitting diode is turned off. Through the disclosed battery pack voltage sequence detection circuit, the sequence of the battery module wire harness is detected, whether the connection of the sequence of the wire harness is correct is judged by whether the light emitting diode emits light, and the phenomenon that a fire disaster happens because the battery module and the wire harness in an error state are inserted into a battery management system to simulate the front end is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a circuit for detecting a voltage line sequence of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another battery pack voltage line sequence detection circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 1, a connection schematic diagram of a battery pack voltage line sequence detection circuit provided in an embodiment of the present invention is shown, where the battery pack voltage line sequence detection circuit includes: a first switch sub-circuit 101, a second switch sub-circuit 102, a voltage divider circuit, a light emitting diode D1 and a voltage protection sub-circuit 103.
The first input end of the first switch sub-circuit 101 and the first input end of the second switch sub-circuit 102 are connected to the positive electrode BAT + of the battery pack.
It should be noted that the first switch sub-circuit 101 and the second switch sub-circuit 102 are switch-type conduction circuits.
The second input terminal of the first switch sub-circuit 101 is connected to the control terminal of the second switch sub-circuit 102, and the second input terminal of the first switch sub-circuit 101 and the second input terminal of the second switch sub-circuit 102 are connected to the positive electrode BAT-and the negative electrode BAT-of the battery pack through the voltage protection sub-circuit 103.
It should be noted that the voltage protection sub-circuit 103 can prevent the damage of the electronic components in the circuit caused by the reverse connection of the positive electrode and the negative electrode of the battery pack, and plays a role in protecting the electronic components in the circuit.
Preferably, the voltage protection sub-circuit 103 is a diode.
It should be noted that the voltage protection sub-circuit 103 may be a diode, but in the present invention, the voltage protection sub-circuit 103 is not limited to a diode.
It should also be noted that the diode is a device with two electrodes, allowing current to flow in only a single direction, and many uses apply its rectifying function. The current directivity of most diodes is commonly referred to as "Rectifying" (Rectifying) function. The most common function of a diode is to allow current to pass in a single direction (referred to as forward biasing) and to block current in the reverse direction (referred to as reverse biasing).
The control end of the first switch sub-circuit 101 is connected with the anode of the light-emitting diode D1, the cathode of the light-emitting diode D1 is connected with the anode of the voltage protection sub-circuit 103, and the cathode of the electronic protection sub-circuit is connected with the cathode of the battery pack.
It should be noted that the light emitting diode D1 is a light emitting device, is composed of a PN junction, and also has unidirectional conductivity. When a forward voltage is applied to the light emitting diode D1, holes injected from the P region into the N region and electrons injected from the N region into the P region recombine with electrons in the N region and holes in the P region within several micrometers near the PN junction, respectively, and spontaneous emission fluorescence is generated. The energy states of electrons and holes are different in different semiconductor materials. The more energy is released, the shorter the wavelength of light emitted, the more energy is released when electrons and holes recombine. Diodes emitting red, green or yellow light are commonly used. The reverse breakdown voltage of led D1 is greater than 5 volts. Its forward current-voltage characteristic is very steep and in use a current limiting resistor must be connected in series to control the current through the diode.
It should be noted that the core portion of the led D1 is a wafer composed of a P-type semiconductor and an N-type semiconductor, and there is a transition layer between the P-type semiconductor and the N-type semiconductor, which is called a PN junction. In the PN junction of some semiconductor materials, the injected minority carriers and majority carriers when they recombine release excess energy in the form of light, thereby directly converting electrical energy into light energy. The PN junction is added with reverse voltage, and minority carriers are difficult to inject, so that the LED does not emit light. When it is in forward working state (i.e. forward voltage is applied to two ends), when the current flows from anode to cathode of LED, the semiconductor crystal can emit light rays with different colors from ultraviolet to infrared, and the intensity of light is related to current.
The voltage dividing circuit is connected to the first switch sub-circuit 101 and the second switch sub-circuit 102, and is configured to divide the voltage of the first switch sub-circuit 101 and the second switch sub-circuit 102.
It should be noted that the voltage divider circuit divides the voltages in the first switch sub-circuit 101 and the second switch sub-circuit 102, so that the voltages in the first switch sub-circuit 101 and the second switch sub-circuit 102 are controlled within a certain range.
In a specific implementation, fig. 1 shows a specific implementation of a voltage dividing circuit, which is composed of a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5.
One end of the second resistor R2 and one end of the fourth resistor R4 are connected to the positive electrode BAT + of the battery pack.
The other end of the second resistor R2 and one end of the third resistor R3 are connected to the common terminal of the first switch sub-circuit 101 and the second switch sub-circuit 102, respectively.
The other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, and further connected to the second switch sub-circuit 102.
The other end of the third resistor R3, the other end of the fifth resistor R5, and the cathode of the light emitting diode D1 are respectively connected to one end of the electronic protection sub-circuit, and the other end of the electronic protection sub-circuit is connected to the cathode BAT of the battery pack.
It should be noted that the resistance ranges of the second resistor R2, the third resistor R3, the fourth resistor R4, and the fifth resistor R5 are: 100K Ω to 1000K Ω.
When the voltage difference between the positive electrode and the negative electrode of the battery pack is within the starting voltage range corresponding to the first switch sub-circuit 101, the first switch sub-circuit 101 is started, so that the light-emitting diode D1 emits light.
It should be noted that when the voltage difference between the positive electrode and the negative electrode of the battery pack is within a certain range, and the voltage obtained by the first switch sub-circuit 101 is about the rated voltage, the first switch sub-circuit 101 is turned on and turned on, so that the current passes through the light emitting diode D1, and the light emitting diode D1 emits light.
Preferably, the rated voltage is 0.6V.
When the voltage difference between the positive electrode and the negative electrode of the battery pack is greater than the starting voltage corresponding to the second switch sub-circuit 102, the second switch sub-circuit 102 is started, so that the light emitting diode D1 is turned off.
It should be noted that, when the voltage difference between the positive electrode and the negative electrode of the battery pack is greater than the starting voltage of the second switch sub-circuit 102, and the voltage obtained by the second switch sub-circuit 102 is the rated voltage, the second switch sub-circuit 102 is started and turned on, and the first switch sub-circuit 101 is turned off, at this time, the current does not pass through the light emitting diode D1, so that the light emitting diode D1 does not emit light any more, that is, the diode is turned off.
It should be noted that, when the voltage line in the battery pack is connected incorrectly, the voltage difference between the positive electrode and the negative electrode of the battery pack does not reach the starting voltage of the first switch sub-circuit 101, so that the current does not pass through the light emitting diode D1, i.e., the light emitting diode D1 does not emit light.
The first input end of the first switch sub-circuit and the first input end of the second switch sub-circuit are connected with the anode of a battery pack; the second input end of the first switch sub-circuit is connected with the control end of the second switch sub-circuit, and the second input end of the first switch sub-circuit and the second input end of the second switch sub-circuit are connected with the positive electrode and the negative electrode of the battery pack through the voltage protection sub-circuit; the control end of the first switch sub-circuit is connected with the anode of the light-emitting diode, the cathode of the light-emitting diode is connected with the anode of the voltage protection sub-circuit, and the cathode of the electronic protection sub-circuit is connected with the cathode of the battery pack; the voltage division circuit is connected with the first switch sub-circuit and the second switch sub-circuit and is used for dividing voltage of the first switch sub-circuit and the second switch sub-circuit; when the voltage difference between the anode and the cathode of the battery pack is within the starting voltage range corresponding to the first switch sub-circuit, the first switch sub-circuit is started, so that the light-emitting diode emits light; when the voltage difference between the anode and the cathode of the battery pack is larger than the starting voltage corresponding to the second switch sub-circuit, the second switch sub-circuit is started, so that the light-emitting diode is turned off. Through the disclosed battery pack voltage sequence detection circuit, the sequence of the battery module wire harness is detected, whether the connection of the sequence of the wire harness is correct is judged by whether the light emitting diode emits light, and the phenomenon that a fire disaster happens because the battery module and the wire harness in an error state are inserted into a battery management system to simulate the front end is avoided.
Referring to fig. 2, a connection schematic diagram of another battery pack voltage line sequence detection circuit provided in an embodiment of the present invention is shown, where the battery pack voltage line sequence detection circuit includes: a first switch sub-circuit 101, a second switch sub-circuit, a voltage divider circuit, a light emitting diode D1 and a voltage protection sub-circuit 103.
The first input end of the first switch sub-circuit 101 and the first input end of the second switch sub-circuit 102 are connected to the positive electrode BAT + of the battery pack.
Specifically, the first switch sub-circuit 101 includes a first transistor Q1 and a first resistor R1, and the second switch sub-circuit 102 includes a second transistor Q2.
The collector E of the first transistor Q1 and the collector E of the second transistor Q2 are connected to the positive electrode BAT + of the battery pack.
An emitter C of the first transistor Q1 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the anode of the light emitting diode D1.
The base B of the first transistor Q1 is connected to the emitter C of the second transistor Q2.
The base electrode B of the first triode Q1 and the base electrode B of the second triode Q2 are connected with the negative electrode BAT-of the battery pack through the voltage protection sub-circuit 103.
Preferably, the first transistor Q1 and the second transistor Q2 are PNP transistors.
It should be noted that the first transistor Q1 and the second transistor Q2 may be PNP transistors, or may be other types of transistors, and in the present invention, the first transistor Q1 and the second transistor Q2 are not limited to PNP transistors.
It should be noted that the types of the first transistor Q1 and the second transistor Q2 may be the same or different, and a suitable type of transistor should be selected according to actual requirements.
The voltage division circuit is connected with the first transistor Q1 and the second transistor Q2 and is used for dividing the voltage of the first transistor Q1 and the second transistor Q2.
Specifically, the voltage dividing circuit includes: a second resistor R2, a third resistor R3, a fourth resistor R4 and a fifth resistor R5.
One end of the second resistor R2 and one end of the fourth resistor R4 are connected to the positive electrode of the battery pack.
The other end of the second resistor R2 is respectively connected with one end of the third resistor R3 and the base B of the first triode.
The other end of the fourth resistor R4 is connected with the base B of the second triode and one end of the fifth resistor R5.
The other end of the third resistor R3, the other end of the fifth resistor R5 and the cathode of the light emitting diode D1 are connected with the anode of the electronic protection sub-circuit.
It should be noted that the resistance ranges of the second resistor R2, the third resistor R3, the fourth resistor R4, and the fifth resistor R5 are: 100K Ω to 1000K Ω.
Specifically, in the embodiment of the present invention, the resistance of the second resistor R2 is 100K Ω, the resistance of the third resistor R3 is 400K Ω, the resistance of the fourth resistor R4 is 100K Ω, and the resistance of the fifth resistor R5 is 600K Ω.
A second input terminal of the first switch sub-circuit 101 is connected to a control terminal of the second switch sub-circuit 102, and the second input terminal of the first switch sub-circuit 101 and the second input terminal of the second switch sub-circuit 102 are connected to a negative electrode BAT-of the battery pack through the voltage protection sub-circuit 103.
Specifically, the voltage protection sub-circuit 103 includes a diode.
The anode of the diode is connected with the cathode of the light emitting diode D1, the other end of the third resistor R3 and the other end of the fifth resistor R5.
And the cathode of the diode is connected with the cathode BAT-of the battery pack.
The control end of the first switch sub-circuit 101 is connected with the anode of the light-emitting diode D1, the cathode of the light-emitting diode D1 is connected with the anode of the voltage protection sub-circuit 103, and the cathode of the electronic protection sub-circuit is connected with the cathode BAT-of the battery pack.
The voltage dividing circuit is connected to the first switch sub-circuit 101 and the second switch sub-circuit 102, and is configured to divide the voltage of the first switch sub-circuit 101 and the second switch sub-circuit 102.
When the voltage difference between the positive electrode and the negative electrode of the battery pack is within the starting voltage range corresponding to the first switch sub-circuit 101, the first switch sub-circuit 101 is started, so that the light-emitting diode D1 emits light.
When the voltage difference between the positive electrode and the negative electrode of the battery pack is greater than the starting voltage corresponding to the second switch sub-circuit 102, the second switch sub-circuit 102 is started, so that the light emitting diode D1 is turned off.
It should be noted that, when the voltage difference between the positive electrode and the negative electrode of the battery pack is greater than 3V and less than 4.2V, the first transistor Q1 is turned on, and the light emitting diode D1 is turned on.
When the voltage difference between the positive electrode and the negative electrode of the battery pack is larger than 4.2V, the second triode Q2 is conducted, the first triode Q1 is turned off, and the light-emitting diode D1 is turned off.
The first input end of the first switch sub-circuit and the first input end of the second switch sub-circuit are connected with the anode of a battery pack; the second input end of the first switch sub-circuit is connected with the control end of the second switch sub-circuit, and the second input end of the first switch sub-circuit and the second input end of the second switch sub-circuit are connected with the positive electrode and the negative electrode of the battery pack through the voltage protection sub-circuit; the control end of the first switch sub-circuit is connected with the anode of the light-emitting diode, the cathode of the light-emitting diode is connected with the anode of the voltage protection sub-circuit, and the cathode of the electronic protection sub-circuit is connected with the cathode of the battery pack; the voltage division circuit is connected with the first switch sub-circuit and the second switch sub-circuit and is used for dividing voltage of the first switch sub-circuit and the second switch sub-circuit; when the voltage difference between the anode and the cathode of the battery pack is within the starting voltage range corresponding to the first switch sub-circuit, the first switch sub-circuit is started, so that the light-emitting diode emits light; when the voltage difference between the anode and the cathode of the battery pack is larger than the starting voltage corresponding to the second switch sub-circuit, the second switch sub-circuit is started, so that the light-emitting diode is turned off. Through the disclosed battery pack voltage sequence detection circuit, the sequence of the battery module wire harness is detected, whether the connection of the sequence of the wire harness is correct is judged by whether the light emitting diode emits light, and the phenomenon that a fire disaster happens because the battery module and the wire harness in an error state are inserted into a battery management system to simulate the front end is avoided.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A battery pack voltage line sequence detection circuit is characterized by comprising: the voltage-dividing circuit comprises a first switch sub-circuit, a second switch sub-circuit, a voltage-dividing circuit, a light-emitting diode and a voltage protection sub-circuit;
the first input end of the first switch sub-circuit and the first input end of the second switch sub-circuit are connected to the anode of the battery pack;
the second input end of the first switch sub-circuit is connected with the control end of the second switch sub-circuit, and the second input end of the first switch sub-circuit and the second input end of the second switch sub-circuit are connected with the positive electrode and the negative electrode of the battery pack through the voltage protection sub-circuit;
the control end of the first switch sub-circuit is connected with the anode of the light-emitting diode, the cathode of the light-emitting diode is connected with the anode of the voltage protection sub-circuit, and the cathode of the electronic protection sub-circuit is connected with the cathode of the battery pack;
the voltage division circuit is connected with the first switch sub-circuit and the second switch sub-circuit and is used for dividing voltage of the first switch sub-circuit and the second switch sub-circuit;
when the voltage difference between the anode and the cathode of the battery pack is within the starting voltage range corresponding to the first switch sub-circuit, the first switch sub-circuit is started, so that the light-emitting diode emits light;
when the voltage difference between the anode and the cathode of the battery pack is larger than the starting voltage corresponding to the second switch sub-circuit, the second switch sub-circuit is started, so that the light-emitting diode is turned off.
2. The circuit of claim 1, wherein the first switching sub-circuit comprises a first transistor Q1 and a first resistor R1, and wherein the second switching sub-circuit comprises a second transistor Q2;
the collector electrode of the first triode Q1 and the collector electrode of the second triode Q2 are connected with the positive electrode of the battery pack;
an emitter of the first triode Q1 is connected with one end of the resistor R1, and the other end of the resistor R1 is connected with the anode of the light-emitting diode;
the base electrode of the first triode Q1 is connected with the emitter electrode of the second triode Q2;
the base electrode of the first triode Q1 and the base electrode of the second triode Q2 are connected with the positive electrode and the negative electrode of the battery pack through the voltage protection sub-circuit;
the voltage division circuit is connected with the first transistor Q1 and the second transistor Q2 and is used for dividing the voltage of the first transistor Q1 and the second transistor Q2.
3. The circuit of claim 2, wherein the first transistor Q1 and the second transistor Q2 are PNP transistors.
4. The circuit of claim 2, wherein the voltage divider circuit comprises: a second resistor R2, a third resistor R3, a fourth resistor R4 and a fifth resistor R5;
one end of the second resistor R2 and one end of the fourth resistor R4 are connected with the anode of the battery pack;
the other end of the second resistor R2 is respectively connected with one end of the third resistor R3 and the base electrode of the first triode;
the other end of the fourth resistor R4 is connected with the base of the second triode and one end of the fifth resistor R5;
the other end of the third resistor R3, the other end of the fifth resistor R5 and the cathode of the light-emitting diode are connected with the anode of the electronic protection sub-circuit.
5. The circuit of claim 2, wherein the voltage protection subcircuit comprises a diode;
the anode of the diode is connected with the cathode of the light-emitting diode, the other end of the third resistor R3 and the other end of the fifth resistor R5;
and the cathode of the diode is connected with the cathode of the battery pack.
6. The circuit of claim 4, wherein the resistances of the second resistor R2, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 are in the range of: 100K Ω to 1000K Ω.
7. The circuit of claim 4, wherein the resistance of the second resistor R2 is 100K Ω, the resistance of the third resistor R3 is 400K Ω, the resistance of the fourth resistor R4 is 100K Ω, and the resistance of the fifth resistor R5 is 600K Ω.
8. The circuit of any one of claims 1 to 7, wherein the first switch sub-circuit corresponds to a starting voltage range greater than 0.6V.
9. The circuit of any one of claims 1 to 7, wherein the second switch sub-circuit corresponds to a starting voltage range greater than 0.6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911032449.5A CN112798985B (en) | 2019-10-28 | 2019-10-28 | Battery pack voltage line sequence detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911032449.5A CN112798985B (en) | 2019-10-28 | 2019-10-28 | Battery pack voltage line sequence detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112798985A true CN112798985A (en) | 2021-05-14 |
| CN112798985B CN112798985B (en) | 2022-07-26 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2023463A2 (en) * | 2007-08-06 | 2009-02-11 | Bast Lighting Co., Ltd. | An emergency luminaire |
| CN101959352A (en) * | 2010-10-15 | 2011-01-26 | 上海小糸车灯有限公司 | LED driving circuit with LED short-circuit protection |
| CN203951171U (en) * | 2014-05-07 | 2014-11-19 | 徐州市恒源电器有限公司 | reverse battery protection circuit |
| CN104777394A (en) * | 2014-01-13 | 2015-07-15 | 东莞钜威新能源有限公司 | Line connection sequence detection circuit |
| CN205941844U (en) * | 2016-08-24 | 2017-02-08 | 上海伟世通汽车电子系统有限公司 | Battery voltage detector circuit |
| CN207232301U (en) * | 2017-09-30 | 2018-04-13 | 惠州市亿能电子有限公司 | A kind of equipment of quick detection battery pack voltage sample line line sequence |
| CN207336624U (en) * | 2017-10-24 | 2018-05-08 | 四川长虹电子部品有限公司 | Voltage indicating circuit based on pressure swing type Type-C fast charges |
| CN109683054A (en) * | 2018-12-25 | 2019-04-26 | 常州格力博有限公司 | Battery pack voltage acquisition harness line sequence diagnostic device and method |
| CN110297156A (en) * | 2019-08-15 | 2019-10-01 | 山东凌宝智能科技有限公司 | A kind of circuit and method by electrical leakage voltage detection electric leakage |
-
2019
- 2019-10-28 CN CN201911032449.5A patent/CN112798985B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2023463A2 (en) * | 2007-08-06 | 2009-02-11 | Bast Lighting Co., Ltd. | An emergency luminaire |
| CN101959352A (en) * | 2010-10-15 | 2011-01-26 | 上海小糸车灯有限公司 | LED driving circuit with LED short-circuit protection |
| CN104777394A (en) * | 2014-01-13 | 2015-07-15 | 东莞钜威新能源有限公司 | Line connection sequence detection circuit |
| CN203951171U (en) * | 2014-05-07 | 2014-11-19 | 徐州市恒源电器有限公司 | reverse battery protection circuit |
| CN205941844U (en) * | 2016-08-24 | 2017-02-08 | 上海伟世通汽车电子系统有限公司 | Battery voltage detector circuit |
| CN207232301U (en) * | 2017-09-30 | 2018-04-13 | 惠州市亿能电子有限公司 | A kind of equipment of quick detection battery pack voltage sample line line sequence |
| CN207336624U (en) * | 2017-10-24 | 2018-05-08 | 四川长虹电子部品有限公司 | Voltage indicating circuit based on pressure swing type Type-C fast charges |
| CN109683054A (en) * | 2018-12-25 | 2019-04-26 | 常州格力博有限公司 | Battery pack voltage acquisition harness line sequence diagnostic device and method |
| CN110297156A (en) * | 2019-08-15 | 2019-10-01 | 山东凌宝智能科技有限公司 | A kind of circuit and method by electrical leakage voltage detection electric leakage |
Non-Patent Citations (1)
| Title |
|---|
| 刘新天: "锂电池组电压采样线序检测模块的设计与应用", 《电源技术》 * |
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| CN112798985B (en) | 2022-07-26 |
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