CN118044090A - Voltage detection circuit, vehicle emergency starting power supply and storage battery clamp - Google Patents
Voltage detection circuit, vehicle emergency starting power supply and storage battery clamp Download PDFInfo
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- CN118044090A CN118044090A CN202180102711.8A CN202180102711A CN118044090A CN 118044090 A CN118044090 A CN 118044090A CN 202180102711 A CN202180102711 A CN 202180102711A CN 118044090 A CN118044090 A CN 118044090A
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- 238000003860 storage Methods 0.000 title description 2
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- 238000002955 isolation Methods 0.000 claims description 7
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides a voltage detection circuit, a vehicle emergency starting power supply and a battery clamp, wherein the voltage detection circuit comprises a voltage detection module, a processing module and a switch module, the voltage detection module is respectively and electrically connected with a first positive electrode and a first negative electrode of a vehicle battery, and is used for detecting voltage between the first positive electrode and the first negative electrode, obtaining detection signals according to the voltage between the first positive electrode and the first negative electrode, the switch module is respectively and electrically connected with the processing module and the first negative electrode, and the processing module is used for controlling the conduction state of the switch module according to the detection signals. The switch module is electrically connected with the first negative electrode and used for controlling a loop of the first negative electrode, and the voltage detection module is used for detecting a voltage value between the first positive electrode and the first negative electrode. The processing module can control a loop where the first negative electrode is located according to the voltage between the first electrode and the second electrode, so that automatic logic control is realized.
Description
The application relates to the technical field of circuits, in particular to a voltage detection circuit, a vehicle emergency starting power supply and a battery clamp.
Vehicles have long been one of the important vehicles for humans. At present, most of emergency starting power supply products for vehicles in the market adopt a switching mode of closing a loop anode, and a switching module of the switching mode needs more electronic components and has the problem of high cost.
Disclosure of Invention
The application discloses a voltage detection circuit which can solve the technical problem of high cost.
In a first aspect, the application provides a voltage detection circuit, which comprises a voltage detection module, a processing module, a switch module and a load port, wherein the load port comprises a first positive electrode and a first negative electrode, and the voltage detection module comprises an isolation sensing unit; wherein,
The voltage detection module is respectively and electrically connected with the first positive electrode and the first negative electrode and is used for detecting the voltage between the first positive electrode and the first negative electrode and obtaining a detection signal according to the voltage between the first positive electrode and the first negative electrode;
the switch module is respectively and electrically connected with the processing module and the first negative electrode;
The processing module is used for controlling the conduction state of the switch module according to the detection signal.
The switch module is electrically connected with the first negative electrode and is used for controlling a loop where the first negative electrode is located, and the voltage detection module is used for detecting a voltage value between the first positive electrode and the first negative electrode. The processing module can control a loop where the first negative electrode is located according to the voltage between the first electrode and the second electrode, so as to realize automatic logic control.
Optionally, the voltage detection circuit further comprises a power supply terminal, the switch module is further configured to be electrically connected to a second negative electrode of the power supply terminal, the first positive electrode is electrically connected to a second positive electrode of the power supply terminal, wherein,
When the switch module is turned on, the first negative electrode can be electrically connected with the second negative electrode through the switch module, so that the power supply end can supply power for the output of the load port.
Optionally, the isolation sensing unit includes a signal transmitting unit and a signal receiving unit, the signal transmitting unit is electrically connected with the first positive electrode and the first negative electrode, and the signal receiving unit is electrically connected with the processing module; wherein,
The signal transmitting unit is used for generating a signal which can be received by the signal receiving unit in a non-electric coupling mode based on the voltage of the first positive electrode and the first negative electrode, and the signal receiving unit is used for transmitting the detection signal to the processing module based on the signal received from the signal transmitting unit.
Optionally, the negative electrode of the signal receiving unit and the grounding end of the processing module are both electrically connected with one end of the switch module, and the negative electrode of the signal transmitting unit and the first negative electrode are electrically connected with the other end of the switch module.
Optionally, the voltage detection module includes a light emitting unit and a photosensitive unit, the light emitting unit is electrically connected with the first positive electrode and the first negative electrode respectively, and the photosensitive unit is electrically connected with the processing module; wherein,
The light emitting unit is used for transmitting an optical signal based on a voltage between the first positive electrode and the first negative electrode;
the light sensing unit is used for receiving the optical signal and generating the detection signal based on the optical signal.
Optionally, the voltage detection circuit further includes a driving module, the driving module is electrically connected with the processing module and the switch module respectively, and the processing module is further configured to send a control signal to the driving module to drive the switch module to be turned on.
Optionally, the switch module includes a plurality of NMOS transistors.
Optionally, when the processing module detects that the voltage value between the first positive electrode and the first negative electrode is greater than 0V, the processing module outputs a control signal to enable the switch module to be turned on through the control signal.
Optionally, when the processing module detects that the voltage value between the first positive electrode and the first negative electrode is greater than or equal to a preset voltage threshold, the processing module outputs a control signal, so that the switching module is turned on through the control signal.
Optionally, when the processing module detects that the voltage value between the first positive electrode and the first negative electrode is reduced, or the reduction rate reaches a preset reduction rate, the processing module outputs a control signal, so that the switching module is turned on through the control signal.
Optionally, the voltage detection circuit further includes a power supply module, where the power supply module is electrically connected to the processing module and the second anode, and the power supply module is used to supply power to the processing module.
In a second aspect, the present application further provides a vehicle emergency starting power supply, where the emergency starting power supply includes the voltage detection circuit according to the first aspect and a power supply, and the power supply provides voltage/current for the power supply terminal.
In a third aspect, the present application further provides a battery holder, where the battery holder includes a housing and the voltage detection circuit according to the first aspect, and the voltage detection circuit is at least partially structurally disposed in the housing.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a voltage detection circuit frame according to an embodiment of the application.
Fig. 2 is a schematic circuit diagram of a voltage detection module according to an embodiment of the application.
Fig. 3 is a schematic circuit diagram of a voltage detection module according to an embodiment of the application.
Fig. 4 is a schematic circuit diagram of a switch module and a driving module according to an embodiment of the application.
Fig. 5 is a schematic diagram of a voltage detection circuit according to an embodiment of the application.
Fig. 6 is a schematic diagram of a vehicle emergency starting power supply device according to an embodiment of the application.
Fig. 7 is a schematic diagram of a battery clamp according to an embodiment of the application.
Description of the reference numerals: the detection signal-CAR_AD, the control signal-mos_EN, the voltage detection circuit-1, the voltage detection module-11, the isolation sensing unit-111, the signal transmitting unit-1111, the signal receiving unit-1112, the light emitting unit-112, the light sensing unit-113, the load port-12, the first positive electrode 121, the first negative electrode 122, the processing module-13, the switching module-14, the power supply end-15, the second positive electrode 151, the second negative electrode-152, the driving module-16, the power supply module-17, the vehicle emergency starting power supply 2, the power supply-21, the battery clamp-3, the shell-31 and the intelligent battery clamp-32.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
Reference to "an electrical connection" in embodiments of the application may include a direct electrical connection or an indirect electrical connection, and "a connection" may include a direct connection or an indirect connection.
Referring to fig. 1, fig. 1 is a schematic diagram of a voltage detection circuit frame according to an embodiment of the application. The voltage detection circuit 1 comprises a voltage detection module 11, a processing module 13, a switch module 14 and a load port 12, wherein the load port 12 comprises a first positive electrode 121 and a first negative electrode 122, and the voltage detection module 11 comprises an isolation sensing unit 111; the voltage detection module 11 is electrically connected to the first positive electrode 121 and the first negative electrode 122, and is configured to detect a voltage between the first positive electrode 121 and the first negative electrode 122, and obtain a detection signal car_ad according to the voltage between the first positive electrode 121 and the first negative electrode 122; the switch module 14 is electrically connected to the processing module 13 and the first negative electrode 122, respectively; the processing module 13 is configured to control the on state of the switching module 14 according to the detection signal car_ad.
In the related art, if the circuit where the first positive electrode 121 is located is closed by a switch, the power end is closed to output to the load port 12, and the cost of the required electronic components may be relatively high in this switching manner; or the circuit where the first negative electrode 122 is closed by a switch, so that the power end is closed to output to the load port 12, and the processing module 13 cannot directly detect the voltage between the first positive electrode 121 and the first negative electrode 122, so that corresponding logic control cannot be realized.
It can be appreciated that, in this embodiment, the switch module 14 is electrically connected to the first negative electrode 122, and is used for controlling a circuit where the first negative electrode 122 is located, and the voltage detection module 11 is used for detecting a voltage value between the first positive electrode 121 and the first negative electrode 122. The processing module 13 may control the loop where the first negative electrode 122 is located according to the voltage between the first electrode and the second electrode, so as to implement automatic logic control.
In a possible implementation manner, referring to fig. 1 again, the voltage detection circuit 1 further includes a power supply terminal 15, the switch module 14 is further configured to be electrically connected to a second negative electrode 152 of the power supply terminal 15, and the first positive electrode 121 is electrically connected to a second positive electrode 151 of the power supply terminal 15, where when the switch module 14 is turned on, the first negative electrode 122 can be electrically connected to the second negative electrode 152 through the switch module 14, so that the power supply terminal 15 can output power to the load port 12.
Specifically, the switch module 14 is electrically connected to the first negative electrode 122 and the second negative electrode 152, so as to realize on-off control between the first negative electrode 122 and the second negative electrode 152. When the switch module 14 is turned off, the first negative electrode 122 and the second negative electrode 152 are not conducted, so that the power supply terminal 15 cannot supply power to the load port 12, and the effect of cutting off the power supply terminal 15 from supplying power to the load port 12 is achieved; when the processing module 13 controls the switch module 14 to be turned on, the first negative electrode 122 is conducted with the second negative electrode 152, so that the power supply terminal 15 supplies power to the load port 12.
In one possible embodiment, please refer to fig. 2, fig. 2 is a schematic diagram of a voltage detection module frame according to an embodiment of the present application. The isolation sensing unit 111 includes a signal transmitting unit 1111 and a signal receiving unit 1112, the signal transmitting unit 1111 is electrically connected to the first positive electrode 121 and the first negative electrode 122, and the signal receiving unit 1112 is electrically connected to the processing module 13; wherein the signal transmitting unit 1111 is configured to generate a signal that can be received by the signal receiving unit 1112 in a non-electrically coupled manner based on the voltages of the first positive electrode 121 and the first negative electrode 122, and the signal receiving unit 1112 is configured to transmit the detection signal to the processing module 13 based on the signal received from the signal transmitting unit 1111.
Specifically, since the signal transmitting unit 1111 is capable of generating a signal that can be received by the signal receiving unit 1112 without being electrically coupled based on the voltages of the first positive electrode 121 and the first negative electrode 122, the processing module 13 can still detect the voltage value between the first positive electrode 121 and the first negative electrode 122 through the voltage detecting module 11 in the case where the switching module 14 is turned off.
Illustratively, the non-electrical coupling may include optical coupling, acoustic coupling, electromagnetic induction coupling, etc., or other coupling methods that do not require a common electrical connection between the signal transmitting unit 1111 and the signal receiving unit 1112, and are within the scope of the embodiments of the present application.
In one possible embodiment, please refer to fig. 3, fig. 3 is a schematic circuit diagram of a voltage detection module according to an embodiment of the present application. The negative electrode of the signal receiving unit 1112 and the ground end of the processing module 13 are electrically connected to one end of the switch module 14, and the negative electrode of the signal transmitting unit 1111 and the first negative electrode 122 are electrically connected to the other end of the switch module 14.
In a possible embodiment, the negative electrode of the signal receiving unit 1112, the ground terminal of the processing module 13, and the second negative electrode 152 are all electrically connected to one end of the switch module 14, where the ground terminal is provided by the second negative electrode 152 for the signal receiving unit 1112 and the processing module 13; the negative electrode of the signal transmitting unit 1111 and the first negative electrode 122 are electrically connected to the other end of the switching module 14.
In this embodiment, please refer to fig. 3 again. The voltage detection module 11 includes a light emitting unit 112 and a light sensing unit 113, the light emitting unit 112 is electrically connected to the first positive electrode 121 and the first negative electrode 122, and the light sensing unit 113 is electrically connected to the processing module 13; wherein the light emitting unit 112 is configured to transmit an optical signal based on a voltage between the first positive electrode 121 and the first negative electrode 122; the light sensing unit 113 is configured to receive the optical signal and generate the detection signal car_ad based on the optical signal.
Specifically, the light emitting unit 112 serves as the signal transmitting unit 1111, and the light sensing unit serves as the signal receiving unit 1112. When the forward currents or voltages are applied to the two ends of the light emitting unit 112, the light emitting unit 112 normally works to emit light, and it is understood that the light intensity of the light emitted by the light emitting unit 112 is positively correlated with the magnitude of the forward currents or voltages applied to the two ends of the light emitting unit 112, that is, the larger the forward currents or voltages are applied to the two ends of the light emitting unit 112, the larger the light intensity of the light emitted by the light emitting unit 112 is.
When the light receiving unit 113 receives light, the internal resistance of the light receiving unit 113 is reduced, and the degree of the internal resistance reduction is positively correlated with the intensity of the received light, that is, the greater the intensity of the light received by the light receiving unit 113, the lower the internal resistance of the light receiving unit 113.
In this embodiment, as shown in fig. 2, the voltage detection module 11 further includes a voltage dividing resistor, and the photosensitive unit 113 and the voltage dividing resistor are connected in series to ground. The smaller the internal resistance of the photosensitive cell 113 is, the larger the voltage value of one end of the photosensitive cell 113 electrically connected to the voltage dividing resistor is, so that the voltage value of the detection signal car_ad generated at one end of the photosensitive cell 113 is larger, that is, the voltage value of the detection signal car_ad is inversely related to the internal resistance of the photosensitive cell 113.
It can be appreciated that, in the present embodiment, by the light emitting unit 112 and the light sensing unit 113, even when the first negative electrode 122 and the second negative electrode 152 are not turned on, that is, when the switching module 14 is turned off, the voltage value between the first positive electrode 121 and the first negative electrode 122 can be coupled to the processing module 13 through the voltage detecting module 11. In other possible implementations, the circuit of the voltage detection module 11 is not limited by the embodiment of the present application.
In one possible embodiment, the light emitting unit 112 may include a light emitting diode, and the light sensing unit 113 may include a photodiode.
In a possible implementation, referring to fig. 1 again, the voltage detection circuit 1 further includes a driving module 16, where the driving module 16 is electrically connected to the processing module 13 and the switching module 14, and the processing module 13 is further configured to send a control signal mos_en to the driving module 16 to drive the switching module 14 to be turned on.
It should be noted that, in the circuit, the switch module 14 may use a transistor or a relay as one of main electronic components, so as to implement automatic logic control, the voltage detection circuit 1 further includes the driving module 16, and when the processing module 13 further sends the control signal mos_en to the driving module 16, the driving module 16 may be used to drive the switch module 14 to be turned on.
In one possible implementation, the switching module 14 includes one or more field effect transistors (MOSFETs, MOS).
In one possible implementation, the switch module 14 includes one or more NMOS transistors. In one possible embodiment, please refer to fig. 4, fig. 4 is a schematic circuit diagram of a switch module and a driving module according to an embodiment of the present application. The switch module 14 includes a plurality of NMOS transistors.
It should be noted that, in the circuit diagram provided by the present application, the nodes denoted by the same reference numerals are electrically connected together, for example, GND, bat+ and the like. In each drawing, car+ is the first positive electrode 121, CAR-is the first negative electrode 122, bat+ is the second positive electrode 151, and gnd is the second negative electrode 152, which will not be described in detail below.
Specifically, since the instantaneous current of the vehicle power-on is large, in this embodiment, the switch module 14 includes a plurality of parallel NMOS transistors, so that the power-on current is dispersed in the plurality of parallel NMOS transistors, thereby avoiding damage to the electronic components in the switch module 14 caused by the excessive power-on current.
In the present embodiment, the switch module 14 employs an NMOS transistor, which is different from a PMOS transistor in that the on-resistance of the NMOS transistor is small and easy to manufacture. It will be appreciated that the use of NMOS transistors for the switch module 14 may further reduce the material cost of the voltage detection circuit 1.
In a possible embodiment, in the case that the processing module 13 detects that the voltage value between the first positive electrode 121 and the first negative electrode 122 is greater than 0V, the processing module 13 outputs a control signal mos_en to turn on the switching module 14 through the control signal mos_en.
In this way, when the processing module 13 can detect that the voltage value between the first positive electrode 121 and the first negative electrode 122 of the load port 12 is greater than 0V, that is, when the load port 12 is connected to a load device (such as a vehicle battery), the two ends of the load device supply voltages to the first positive electrode 121 and the first negative electrode 122, so as to drive the light emitting unit 112 to emit light, so that the light sensing unit 113 sends a corresponding detection signal car_ad to the processing module 13. At this time, the processing module 13 may control the switching module 14 to be turned on, so that the power source terminal 15 outputs power to the load port 12, thereby supplying power to the load device connected to the load port 12.
In a possible embodiment, in the case that the processing module 13 detects that the voltage value between the first positive electrode 121 and the first negative electrode 122 is greater than or equal to a preset voltage threshold, the processing module 13 outputs a control signal mos_en to turn on the switching module 14 through the control signal mos_en.
In this way, when the processing module 13 detects that the voltage value between the first positive electrode 121 and the first negative electrode 122 is greater than or equal to the preset voltage threshold, the processing module 13 controls the switch module 14 to be turned on, so that the power supply terminal 15 outputs power to the load port 12, thereby supplying power to the load port 12. The preset voltage threshold may be set based on an operating voltage of the load device to which the load port 12 is connected, for example, the preset voltage threshold may be 7V, 8V, 9V, 9.5V, or 10V. When the load device is a vehicle battery, the load device reaches a preset voltage threshold value to allow the power supply terminal 15 to output power to the load device connected with the load port 12, so that the vehicle can work normally by using the battery after starting.
It will be appreciated that in other possible embodiments, the preset voltage threshold may vary with the actual situation, and the variation of the preset voltage threshold may be static or dynamic. The logic of the processing module 13 controlling the driving module 16 may also be different, which is not limited by the present application.
In a possible embodiment, in the case that the processing module 13 detects that the voltage value between the first positive electrode 121 and the first negative electrode 122 is reduced, or the reduction rate reaches a preset reduction rate, the processing module 13 outputs a control signal mos_en to turn on the switching module 14 by the control signal mos_en.
In this way, when the voltage value between the first positive electrode 121 and the first negative electrode 122 decreases, or the decreasing rate reaches the preset decreasing rate, it indicates that the vehicle is powered down, and the vehicle may be performing a lighting operation, at this time, the processing module 13 controls the switch module 14 to be turned on, so that the power supply terminal 15 supplies power to the load port 12, thereby supplying power to the connected vehicle, and providing power for starting the vehicle. In this way, the processing module 13 allows to supply electric energy to the vehicle when the vehicle ignition is detected, thereby realizing the power supply intelligentization and saving electricity.
In one possible implementation, when the voltage value between the first positive electrode 121 and the first negative electrode 122 is smaller than the voltage value of the power supply terminal, the processing module 13 sends the control signal to the driving module 16 to drive the switching module 14 to be turned on. In this way, the load device connected to the first positive electrode 121 and the first negative electrode 122 can be prevented from flowing backward to the power supply of the power supply terminal 15.
In a possible embodiment, referring to fig. 1 again, the voltage detection circuit 1 further includes a power supply module 17, where the power supply module 17 is electrically connected to the processing module 13 and the second positive electrode 151, and the power supply module 17 is configured to supply power to the processing module 13.
For example, the current or voltage provided by the power supply terminal 15 is generally large, and cannot directly supply power to the processing module 13 or the like, so the power supply module 17 is required to perform voltage regulation on the current or voltage provided by the power supply terminal 15. In this embodiment, the power supply module 17 is electrically connected to the second positive electrode 151, and the voltage value provided by the second positive electrode 151 is reduced to 5V by the power supply module 17 and transmitted to the processing module 13, so that the processing module 13 works normally. As yet another example, the current or voltage provided by the power terminal 15 may be unstable, and the power module may perform a voltage stabilization process on the current or voltage provided by the power terminal 15 to provide a stable current or voltage to the processing module 13. Further, the power supply module 17 may be a combination of the two examples.
It will be appreciated that in other possible embodiments, the power supply module 17 is not limited by the present application, as long as the normal operation of the processing module 13 is not affected, for example, additional power is provided to supply power to the processing module 13.
In one possible embodiment, please refer to fig. 5, fig. 5 is a schematic diagram of a voltage detection circuit according to an embodiment of the present application. It should be noted that the electronic components and the electrical connection manner shown in fig. 5 are only one embodiment provided by the present application, and do not represent the circuit structure of the voltage detection circuit 1.
Wherein U3 is the isolation sensing unit 111, R15 is a current limiting resistor, and D4 is an anti-reflection diode. When car+ and CAR-are connected to the load device in the forward direction, the light emitting unit 112 inside U3 is turned on, and when the voltage between car+ and CAR-is higher, the light intensity of the light emitting unit 112 inside is larger, the light receiving unit 113 is better turned on, and the internal resistance is smaller. After the voltage division between the photosensitive units 113 and R14, the detection signal car_ad voltage signal is output, and the detection signal car_ad voltage is proportional to the car+ voltage value. The processing module 13 can determine the voltage value of the load device by detecting the voltage value of the detection signal car_ad. The processing module 13 outputs different control logic according to the voltage values of different load devices, and is used for outputting the control signal MOS_EN signal, so that the switch module 14 of the negative end of the loop is turned on or turned off.
In one possible implementation, the processing module 13 may include one or more of a drive board, a microprocessor, other general purpose Processor, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components. The drive board may include a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc.
The application also provides a vehicle emergency starting power supply 2, please refer to fig. 6, fig. 6 is a schematic diagram of a vehicle emergency starting power supply device according to an embodiment of the application. The vehicle emergency starting power supply 2 comprises the voltage detection circuit 1 and the power supply 21, wherein the power supply 21 provides voltage or current for the power supply terminal 15. Specifically, the voltage detection circuit 1 is described above, and will not be described herein.
The application also provides a battery clamp 3, referring to fig. 6 and fig. 7, fig. 7 is a schematic diagram of a battery clamp according to an embodiment of the application. The battery clamp 3 includes a housing 31 and the voltage detection circuit 1 as described above, and at least part of the voltage detection circuit 1 is structurally disposed in the housing 31.
Specifically, the battery clamp 3 further includes two clamps 32, one of the two clamps 32 is an anode clamp for clamping the anode of the load device (such as an automobile battery), and the other clamp is a cathode clamp for clamping the cathode of the load device. It will be appreciated that in other possible embodiments, the battery clamp 3 may be of other configurations, as the application is not limited in this regard.
The principles and embodiments of the present application have been described herein with reference to specific examples, the description of the above embodiments being only for the purpose of aiding in the understanding of the core concept of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (13)
- The voltage detection circuit is characterized by comprising a voltage detection module, a processing module, a switch module and a load port, wherein the load port comprises a first positive electrode and a first negative electrode, and the voltage detection module comprises an isolation sensing unit; wherein,The voltage detection module is respectively and electrically connected with the first positive electrode and the first negative electrode and is used for detecting the voltage between the first positive electrode and the first negative electrode and obtaining a detection signal according to the voltage between the first positive electrode and the first negative electrode;the switch module is respectively and electrically connected with the processing module and the first negative electrode;The processing module is used for controlling the conduction state of the switch module according to the detection signal.
- The voltage detection circuit of claim 1, further comprising a power terminal, wherein the switch module is further configured to be electrically coupled to a second negative electrode of the power terminal, wherein the first positive electrode is electrically coupled to the second positive electrode of the power terminal,When the switch module is turned on, the first negative electrode can be electrically connected with the second negative electrode through the switch module, so that the power supply end can supply power for the output of the load port.
- The voltage detection circuit of claim 1, wherein the isolated sensing unit comprises a signal transmitting unit and a signal receiving unit, the signal transmitting unit electrically connected to the first positive electrode and the first negative electrode, the signal receiving unit electrically connected to the processing module; wherein,The signal transmitting unit is used for generating a signal which can be received by the signal receiving unit in a non-electric coupling mode based on the voltages of the first positive electrode and the first negative electrode;The signal receiving unit is used for sending the detection signal to the processing module based on the signal received from the signal transmitting unit.
- The voltage detection circuit of claim 3, wherein the negative electrode of the signal receiving unit and the ground terminal of the processing module are both electrically connected to one end of the switching module, and the negative electrode of the signal transmitting unit and the first negative electrode are electrically connected to the other end of the switching module.
- The voltage detection circuit of claim 1, wherein the voltage detection module comprises a light emitting unit and a light sensing unit, the light emitting unit is electrically connected with the first positive electrode and the first negative electrode respectively, and the light sensing unit is electrically connected with the processing module; wherein,The light emitting unit is used for transmitting an optical signal based on a voltage between the first positive electrode and the first negative electrode;the light sensing unit is used for receiving the optical signal and generating the detection signal based on the optical signal.
- The voltage detection circuit of claim 1, wherein the switch module comprises a plurality of NMOS transistors.
- The voltage detection circuit according to claim 1, wherein the processing module outputs a control signal to turn on the switching module by the control signal in a case where the processing module detects that the voltage value between the first positive electrode and the first negative electrode is greater than 0V.
- The voltage detection circuit according to claim 1, wherein the processing module outputs a control signal to turn on the switching module by the control signal in a case where the processing module detects that the voltage value between the first positive electrode and the first negative electrode is greater than or equal to a preset voltage threshold.
- The voltage detection circuit according to claim 1, wherein the processing module outputs a control signal to turn on the switching module by the control signal in a case where the processing module detects that the voltage value between the first positive electrode and the first negative electrode is decreased, or the rate of decrease reaches a preset rate of decrease.
- The voltage detection circuit of claim 1, further comprising a drive module electrically connected to the processing module and the switching module, respectively, the processing module further configured to send a control signal to the drive module to drive the switching module to open.
- The voltage detection circuit of claim 2, further comprising a power module electrically connected to the processing module and the second positive electrode, respectively, the power module configured to power the processing module.
- A vehicle emergency start-up power supply, characterized in that it comprises a voltage detection circuit according to any one of claims 1-11 and a power supply providing a voltage or a current to the power supply terminal.
- A battery clamp, characterized in that the battery clamp comprises a housing and a voltage detection circuit according to any one of claims 1-11, wherein at least part of the voltage detection circuit is structurally arranged in the housing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/129739 WO2023082083A1 (en) | 2021-11-10 | 2021-11-10 | Voltage measurement circuit, vehicle jump starter and battery clip |
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| Publication Number | Publication Date |
|---|---|
| CN118044090A true CN118044090A (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180102711.8A Pending CN118044090A (en) | 2021-11-10 | 2021-11-10 | Voltage detection circuit, vehicle emergency starting power supply and storage battery clamp |
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| Country | Link |
|---|---|
| CN (1) | CN118044090A (en) |
| WO (1) | WO2023082083A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205610253U (en) * | 2016-03-21 | 2016-09-28 | 深圳市鼎茂科技有限公司 | Electronic switch and emergency power source connector |
| CN105871010B (en) * | 2016-04-28 | 2018-09-18 | 广东百事泰电子商务股份有限公司 | Automobile starting Intelligent storage battery presss from both sides |
| CN106505690B (en) * | 2016-12-26 | 2023-06-02 | 苏州绿恺动力电子科技有限公司 | Safety management system for automobile emergency starting power supply |
| CN106786895B (en) * | 2016-12-26 | 2023-05-30 | 苏州绿恺动力电子科技有限公司 | Battery clamp safety management system of automobile emergency starting power supply |
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2021
- 2021-11-10 CN CN202180102711.8A patent/CN118044090A/en active Pending
- 2021-11-10 WO PCT/CN2021/129739 patent/WO2023082083A1/en active Application Filing
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| WO2023082083A1 (en) | 2023-05-19 |
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