CN208006760U - A kind of charging interface state detection circuit and rechargeable devices - Google Patents

A kind of charging interface state detection circuit and rechargeable devices Download PDF

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Publication number
CN208006760U
CN208006760U CN201820473409.9U CN201820473409U CN208006760U CN 208006760 U CN208006760 U CN 208006760U CN 201820473409 U CN201820473409 U CN 201820473409U CN 208006760 U CN208006760 U CN 208006760U
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charging interface
module
electrically
state acquisition
unit
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杨建敏
韩静茹
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Beijing Jingwei Hirain Tech Co Ltd
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Beijing Jingwei Hirain Tech Co Ltd
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Abstract

The utility model discloses a kind of charging interface state detection circuit and rechargeable devices.Wherein, charging interface state detection circuit includes:Charging interface wake-up module, power module, charging interface state acquisition module and processor module;Charging interface wake-up module is electrically connected with the input terminal of charging interface and power module respectively, for exporting wake-up signal to power module;Power module is electrically connected with processor module, for exporting power supply signal to processor module;Processor module is electrically connected with charging interface state acquisition module, for exporting the first open signal or the first shutdown signal to charging interface state acquisition module;Charging interface state acquisition module is electrically connected with charging interface and processor module respectively, the connection status signal for exporting charging plug and charging interface to processor module.Technical solution provided by the utility model, it is excessive to solve existing charging interface state detection circuit electrostatic current, leads to the problem that power consumption is excessive.

Description

A kind of charging interface state detection circuit and rechargeable devices
Technical field
The utility model is related to electric vehicle charging technique field more particularly to a kind of charging interface state detection circuit and Rechargeable devices.
Background technology
With the development of pure electric vehicle, it is always that industry and user's focus of attention are asked to promote electric vehicle course continuation mileage Topic, and course continuation mileage and the energy content of battery, density positive correlation, it is the current basic way for promoting course continuation mileage to be continuously increased battery capacity Diameter.But while battery capacity is continuously increased, battery charging rate problem is following.Many pure electric vehicles are all equipped at present Fast charge and trickle charge two kinds of charging modes.Fast charge is generally high power DC charging, and battery can be full of within half an hour 80% capacity carries out quickly mending electricity for battery pack.
During quick charge, after the charging gun in charging pile is connected with Vehicular charging socket, charging pile enters certainly The inspection stage, while the battery management system (Battery Management System, BMS) in vehicle starts charging interface shape State detection circuit confirms the connection status of charging interface.After confirmed, BMS carries out data interaction with charging pile, holds Hand configures charging relevant parameter, and then the charging module of charging pile charges according to instruction to the battery pack in electric vehicle. After fully charged, user pulls out charging gun from Vehicular charging socket, puts back to the fixed seat of charging pile, and charging terminates.
But during quick charge, charging gun is constantly in connection status with Vehicular charging socket so that BMS's fills Electrical interface state detection circuit electrostatic current is excessive, causes during entire quick charge, power consumption is larger.Meanwhile it if quickly filling After electric process, if not extracting charging gun for a long time, above-mentioned electrostatic current can always exist, i.e., power consumption always exists, and leads to electricity Pond group is constantly in undersaturated condition, when serious, results even in battery group from over discharging.
Utility model content
A kind of charging interface state detection circuit of the utility model offer and rechargeable devices, to solve existing charging interface State detection circuit electrostatic current is excessive, leads to the problem that power consumption is excessive.
In a first aspect, the utility model provides a kind of charging interface state detection circuit, including:Charging interface wakes up mould Block, power module, charging interface state acquisition module and processor module;
The input terminal of the charging interface wake-up module is electrically connected with charging interface, and shape is connected for detecting charging plug State, output end are electrically connected with the input terminal of the power module, for exporting wake-up signal to the power module;
The output end of the power module is electrically connected with the first input end of the processor module, is used for the processing Device module exports power supply signal;
The output end of the processor module is electrically connected with the first input end of the charging interface state acquisition module, is used In exporting the first open signal or the first shutdown signal to the charging interface state acquisition module;
Second input terminal of the charging interface state acquisition module is electrically connected with the charging interface, output end with it is described Second input terminal of processor module is electrically connected, for exporting the charging plug and the charging to the processor module The connection status signal of mouth.
Optionally, the charging interface wake-up module includes:Switch triggering unit and switch unit;The switch triggering list Input terminal of the input terminal as the charging interface wake-up module of member, is electrically connected with the charging interface, output end with it is described The input terminal of switch unit is electrically connected, for exporting the second open signal to the switch unit;The output of the switch unit The output end as the charging interface wake-up module is held, is electrically connected with the input terminal of the power module, is used for the electricity Source module exports wake-up signal.
Optionally, the switch triggering unit, including:First diode, the first divider resistance and the second divider resistance;Institute Input terminal of the cathode of the first diode as the switch triggering unit is stated, is electrically connected with the charging interface, anode and institute State the first end electrical connection of the first divider resistance;The second end of first divider resistance and the first of second divider resistance End electrical connection, and as the output end of the switch triggering unit, be electrically connected with the input terminal of the switch unit;Described second The second end of divider resistance is electrically connected with the first level output end.
Optionally, the switch unit includes:Partiting dc capacitor, first switch pipe and the first pull down resistor;It is described every Input terminal of the first end of DC capacitor as the switch unit is electrically connected with the second end of first divider resistance, the Two ends are electrically connected with the control terminal of the first switch pipe;The first end of the first switch pipe and first level output end Electrical connection, second end are electrically connected with the first end of first pull down resistor, and as the output end of the switch unit, with institute State the input terminal electrical connection of power module;The second end of first pull down resistor is grounded.
Optionally, the charging interface state acquisition module includes:State acquisition start unit and state acquisition unit;Institute First input end of the input terminal of state acquisition start unit as the charging interface state acquisition module is stated, with the processing The output end of device module is electrically connected, and output end is electrically connected with the first input end of the state acquisition unit, is used for the shape State collecting unit exports third open signal;Second input terminal of the state acquisition unit is adopted as the charging interface state The second input terminal for collecting module, is electrically connected, output end is as the charging interface state acquisition module with the charging interface Output end is electrically connected with the second input terminal of the processor module, for obtaining the charging plug and the charging interface Connection status signal, and export the connection status signal to the processor module.
Optionally, the state acquisition start unit includes:Second switch pipe and third switching tube;The second switch pipe Input terminal of the control terminal as the state acquisition start unit, be electrically connected with the output end of the processor module, first End ground connection, second end is electrically connected with the control terminal of the third switching tube, for the third switching tube to be connected;The third is opened The first end for closing pipe is electrically connected with the first level output end, output end of the second end as the state acquisition start unit, with The first input end of the state acquisition unit is electrically connected.
Optionally, the state acquisition unit includes:First pull-up resistor and the second diode;First pull-up resistor First input end of the first end as the state acquisition unit, be electrically connected with the second end of the third switching tube, second It holds and is electrically connected with the anode of second diode, and as the output end of the state acquisition unit, with the processor die Second input terminal of block is electrically connected;Second input terminal of the cathode of second diode as the state acquisition unit, with The charging interface electrical connection.
Second aspect, the utility model provide a kind of rechargeable devices, including described in the utility model any embodiment Charging interface connection status circuit.
Optionally, the rechargeable devices are electric vehicle.
Charging interface state detection circuit and rechargeable devices provided by the utility model, in addition to power module and processor Module, further includes charging interface wake-up module and charging interface state acquisition module, charging interface wake-up module and power module Electrical connection, for when charging plug accesses the charging interface, exporting wake-up signal startup power supply module, power module is called out After waking up, output power supply signal is to processor module, to start processor module and power for processor module, processor module with Charging interface state acquisition module is electrically connected, and starts charging interface state acquisition module for exporting the first open signal, and connect Receive charging interface state acquisition module output charging plug and charging interface connection status signal, with know charging plug with The connection state information of charging interface, and after knowing that connection state information is connected status, the first shutdown signal of output is extremely Charging interface state acquisition module, charge closing Interface status acquisition module reduce circuit static electric current, save electric energy, protection Battery pack, it is excessive to solve existing charging interface state detection circuit electrostatic current, leads to the problem that power consumption is excessive.
Description of the drawings
Fig. 1 is a kind of connection diagram for Vehicular charging interface that the prior art provides;
Fig. 2 is a kind of structural schematic diagram for charging interface state detection circuit that the prior art provides;
Fig. 3 is a kind of structural schematic diagram for charging interface state detection circuit that the utility model embodiment provides;
Fig. 4 is the structural schematic diagram for another charging interface state detection circuit that the utility model embodiment provides.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for It is bright, it illustrates only for ease of description, in attached drawing and the relevant part of the utility model rather than entire infrastructure.
In the prior art, multiple charging modes such as fast charge, trickle charge often are equipped with to rechargeable devices such as electric vehicles, for User uses.With reference to figure 1, Fig. 1 is a kind of connection diagram for Vehicular charging interface that the prior art provides, and is being filled When electric, the charging plug 3 of charging pile is inserted into the charging interface of electric vehicle, be battery pack 15 in battery management system 4 into Row charging, as shown in Figure 1, when charging plug 3 is inserted into charging interface 2, charging plug 3 or charging interface 2 will produce some and touch Signal triggering processor module 14 so that processor 14 can send out control signal control charging interface charging end DC+ and DC- charges for battery pack 15.
Specifically, when carrying out quick charge to electric vehicle, charging interface state detection circuit is as shown in Fig. 2, Fig. 2 is The structural schematic diagram for a kind of charging interface state detection circuit that the prior art provides, with reference to figure 1 and Fig. 2, when charging plug 3 connects When entering charging interface 2, charging interface 2 is grounded by outer connecting resistance R1, and the ungrounded end of outer connecting resistance R1 respectively with charging The processor module 14 and power module 12 of Interface status detection circuit are electrically connected, and it is defeated by internal resistance R2 to connect the first level Outlet VCC, then outer connecting resistance R1 and internal resistance R2 the first level is divided, generate a voltage signal Signal 1 wake up electricity Source module 12, after power module 12 is waken up, processor module 14 is started to work, and the electricity of collection voltages signal Signal1 Pressure value, to judge the type and connection status of corresponding charging interface 2, for example, whether charging interface 2 is quick charge interface, Whether connection status is connected status, and postprocessor module 14 controls battery pack 15 and charges.In quick charge process In, charging plug 3 and charging interface 2 are constantly in connected status, and outer connecting resistance R1 accesses always charging interface state-detection Circuit 1, then will produce quiescent current.Quiescent current refers to the electric current not having under signal condition or standby mode, for example, electric vehicle Charging plug 3 access charging plug 2, no matter electric vehicle whether be in charged state, charging interface state detection circuit 1 is all The electric current that will produce.
For example, the voltage value of the first level of the first level output end output is generally 12V, outer connecting resistance R1 is 1K Ω, Internal resistance R2 is 1K Ω, then the quiescent current of the circuit is 12V/ (R1+R2) K Ω=6mA at this time, and entire battery management system The quiescent current needs of system 4 are less than 1mA, and excessive quiescent current will cause 4 power consumption of battery management system larger, battery pack 15 1 Directly it is in discharge condition.Meanwhile if after charging, charging plug 3 is not extracted for a long time, above-mentioned consumption will be always existed, and be led It causes battery pack 15 to be constantly in undersaturated condition, 15 over-discharge of battery pack is resulted even in when serious.
To solve the problems, such as that 15 over-discharge of battery pack, the utility model embodiment provide a kind of charging interface state-detection Circuit, with reference to figure 3, Fig. 3 is a kind of structural schematic diagram for charging interface state detection circuit that the utility model embodiment provides, The charging interface state detection circuit includes:Charging interface wake-up module 11, power module 12, charging interface state acquisition module 13 and processor module 14;
The input terminal of charging interface wake-up module 11 is electrically connected with charging interface 2, for detecting charging plug connection status, Output end is electrically connected with the input terminal of power module 12, for exporting wake-up signal to power module 12;
The output end of power module 12 is electrically connected with the first input end of processor module 14, is used for processor module 14 Export power supply signal;
The output end of processor module 14 is electrically connected with the first input end of charging interface state acquisition module 13, for Charging interface state acquisition module 13 exports the first open signal or the first shutdown signal;
Second input terminal of charging interface state acquisition module 13 is electrically connected with charging interface 2, output end and processor die Second input terminal of block 14 is electrically connected, and the connection status for exporting charging plug and charging interface 2 to processor module 14 is believed Number.
The utility model embodiment is also provided with charging interface wake-up on the basis of power module 12 and processing module 14 Module 11 and charging interface state acquisition module 13.Charging interface wake-up module 11 is electrically connected with charging interface 2, is able to detect that Whether charging plug accesses charging interface 2, because when charging plug accesses charging interface 2, charging interface 2 can output signal to Charging interface wake-up module 11 so that charging interface wake-up module 11 exports wake-up signal to power module 12, with startup power supply Module 12.
After power module 12 is activated, power supply signal can be exported to processing module 14, to start processing module 14, and be place It manages module 14 and working power is provided.Processing module 14 enters working condition, and the first open signal is exported to charging by output end Interface status acquisition module 13, to open charging interface state acquisition module 13.
After charging interface state acquisition module 13 is opened, the signal that charging interface 2 inputs is obtained by the second input terminal, And the connection status signal of charging plug and charging interface 2 is obtained by the input signal, pass through the connection status signal, user The connection status of charging plug and charging interface 2 can be obtained, for example, obtaining the type information of charging plug, and obtains charging Plug and charging interface 2 are connected status or off-state.Charging interface state acquisition module 13 obtains connection status letter After number, by connection status signal transmission to processor module 14, then when processor module 14 receives connection status signal, if obtaining Know that charging plug and charging interface 2 are connected status, then export the first shutdown signal to charging interface state acquisition module 13, So that charging interface state acquisition module 13 stops the acquisition to connection status signal.
Hereafter, charging interface state acquisition module 13 will not generate quiescent current, only charging interface wake-up module 11 There are quiescent currents, reduce the quiescent current of entire charging interface state detection circuit to a certain extent, reduce power consumption, and It can avoid the problem that 15 over-discharge of battery pack, battery pack 15 is protected, increase the service life of battery pack 15.
When charging plug 3 accesses charging interface 2, charging interface 2 can be grounded by outer connecting resistance R1.In charging plug When 3 access charging interface 2, charging interface 2 is that charging interface wake-up module 11 and charging interface state acquisition module 13 provide one A low level signal so that charging interface wake-up module 11 is connected, and charging interface state acquisition module 13 can be connected Connect the acquisition of status signal.
Optionally, with reference to figure 4, Fig. 4 is another charging interface state detection circuit that the utility model embodiment provides Structural schematic diagram, charging interface wake-up module 11 may include:Switch triggering unit 111 and switch unit 112;Switch triggering Input terminal of the input terminal of unit 111 as charging interface wake-up module 11, is electrically connected with charging interface 2, output end and switch The input terminal of unit 112 is electrically connected, for exporting the second open signal to switch unit 112;The output end of switch unit 112 is made It for the output end of charging interface wake-up module 11, is electrically connected with the input terminal of power module 12, for being exported to power module 12 Wake-up signal.
Optionally, switch triggering unit 111 may include:First diode VD1, the first divider resistance R3 and second point Piezoresistance R4;Input terminal of the cathode of first diode VD1 as switch triggering unit 111, is electrically connected, just with charging interface 2 Pole is electrically connected with the first end of the first divider resistance R3;The second end of first divider resistance R3 and the first of the second divider resistance R4 End electrical connection, and as the output end of switch triggering unit 111, be electrically connected with the input terminal of switch unit 112;Second partial pressure electricity The second end of resistance R4 is electrically connected with the first level output end VCC.
The moment of charging interface 2 is accessed in charging plug, switch triggering unit 111 passes through the first diode VD1 and charging Interface 2 is electrically connected, and the first diode VD1 can prevent reverse power connection to a certain extent, to charging interface state detection circuit It is protected.
The ground terminal GND of outer connecting resistance R1, the first divider resistance R3 and the second divider resistance R4 in the first level output end VCC Between form series circuit, switch triggering unit 111 is switched on, will be between the first divider resistance R3 and the second divider resistance R4 Voltage high generates the second open signal, and the second open signal is for opening switch unit 112.
Optionally, switch unit 112 may include:Partiting dc capacitor C1, first switch pipe Q1 and the first pull down resistor R5;Input terminal of the first end of partiting dc capacitor C1 as switch unit 112 is electrically connected with the second end of the first divider resistance R3 It connects, second end is electrically connected with the control terminal of first switch pipe Q1;The first end of first switch pipe Q1 and the first level output end VCC Electrical connection, second end are electrically connected with the first end of the first pull down resistor R5, and as the output end of switch unit 112, with power supply The input terminal of module 12 is electrically connected;The second end of first pull down resistor R5 is grounded.
Voltage between the first divider resistance R3 and the second divider resistance R4 generates the second open signal after being raised, the Two open signals can trigger the control terminal of first switch pipe Q1, and first switch pipe Q1 is made to be connected, and the of the first pull down resistor R5 The voltage of one end is raised, and exports high level signal, that is, exports wake-up signal Signal 4, startup power supply module 12.
Wherein, the control terminal electricity that the output end of switch triggering unit 111 passes through partiting dc capacitor C1 and first switch pipe Q1 Connection, because there is partiting dc capacitor C1 stopping direct current, the characteristic of logical exchange, first switch pipe Q1 to be only connected in partiting dc capacitor C1 First rising edge transient state conducting so that switch unit 112 can wake up power module 12.Switch unit 112 only needs to call out Awake power module 12, subsequent process power module 12 can work independently, not need switch unit 112 and persistently export wake-up signal Signal 4, first switch pipe Q1 are closed, and are further reduced energy consumption.
Optionally, charging interface state acquisition module 13 may include:State acquisition start unit 131 and state acquisition list Member 132;First input end of the input terminal of state acquisition start unit 131 as charging interface state acquisition module 13, with place The output end electrical connection of device module 14 is managed, output end is electrically connected with the first input end of state acquisition unit 132, is used for state Collecting unit 132 exports third open signal;132 second input terminal of state acquisition unit is as charging interface state acquisition module 13 the second input terminal, is electrically connected with charging interface 2, output end of the output end as charging interface state acquisition module 13, with Second input terminal of processor module 14 is electrically connected, the connection status signal for obtaining charging plug and charging interface 2, and to Processor module 14 exports connection status signal.
After power module 12 is waken up, power supply signal can be exported to processor module 14, the output of processor module 14 first 2 triggering states of open signal Signal acquire start unit 131, and state acquisition start unit 131 exports third open signal and opens State acquisition unit 132 is opened, the connection status signal Signal 3 of acquisition is delivered to processor module by state acquisition unit 132 14, so that processor module 14 is obtained the connection state information of charging plug and charging interface 2, and in charging plug and charging interface 2 be connected status when, control battery pack charge.
Optionally, state acquisition start unit 131 may include:Second switch pipe Q2 and third switching tube Q3;Second opens Input terminal of the control terminal of pipe Q2 as state acquisition start unit 131 is closed, is electrically connected with the output end of processor module 14, the One end is grounded, and second end is electrically connected with the control terminal of third switching tube Q3, for third switching tube Q3 to be connected;Third switching tube Q3 First end be electrically connected with the first level output end VCC, output end of the second end as state acquisition start unit 131, with shape The first input end of state collecting unit 132 is electrically connected.
The control terminal of second switch pipe Q2 has received open signal Signal 2 and is switched on, and then second switch pipe Q2 Second end exports low level signal and third switching tube Q3 is connected, then third switching tube Q3 exports high level signal by second end, That is third open signal open state collecting unit 132.Second switch pipe Q2 and third switching tube Q3 are superimposed, enhance state Acquire the switch performance of start unit 131.Certainly, state acquisition start unit 131 can only pass through second switch pipe Q2 opening states State collecting unit 132, also can be only by third switching tube Q3 open states collecting unit 132, and the above open method can be real Pass through the scheme of 131 open state collecting unit 132 of state acquisition start unit in existing the present embodiment.
Optionally, state acquisition unit 132 may include:First pull-up resistor R6 and the second diode VD2;First pull-up First input end of the first end of resistance R6 as state acquisition unit 132 is electrically connected with the second end of third switching tube Q3, the Two ends are electrically connected with the anode of the second diode VD2, and as the output end of state acquisition unit 132, with processor module 14 The second input terminal electrical connection;Second input terminal of the cathode of second diode VD2 as state acquisition unit 132, with charging Interface 2 is electrically connected..
When state acquisition start unit 131 exports high level to state acquisition unit 132, the first pull-up resistor R6 second The voltage value at end is raised, and generates connection status signal Signal 3, and connection status signal Signal 3 is delivered to processing Device module 14, processor module 14 export shutdown signal charge closing Interface status acquisition module 13, charging interface state acquisition There is no electric currents in module 13.
To sum up, after the entire state-detection process of charging interface state detection circuit, only switch triggering unit 111 In there are electric currents, i.e., by the first level output end VCC, flow through the first divider resistance R3, the second divider resistance R4 and outer The electric current of connecting resistance R1, because the partial pressure of the first divider resistance R3 and the second divider resistance R4 act on, quiescent current is very small, example Such as, the first level output end VCC output voltages are still 12V, and outer connecting resistance R1 is 1K Ω, and the first divider resistance R3 of setting is 50K Ω, the second divider resistance R4 are 500K Ω, then the electrostatic current of charging interface state detection circuit is 12V/ (R1+R3+R4) K at this time Ω=0.02mA is far below 1mA, is influenced on battery discharge smaller.
After the present embodiment technical solution can ensure that charging plug is connect with charging interface, battery management system can be waken up System, charges to battery pack.Meanwhile after the completion of the detection of charging interface connection status, charging interface state detection circuit enters Suspend mode reduces quiescent current.After processor module judges charging complete, battery management system integrally enters suspend mode.
The utility model embodiment additionally provides a kind of rechargeable devices, rechargeable devices provided by the embodiment, including sheet Charging interface state detection circuit 1 described in utility model any embodiment.
Optionally, rechargeable devices can be electric vehicle, then charging interface is the charging interface of electric vehicle, charging Mouth state detection circuit is the charging interface state detection circuit of electric vehicle, correspondingly, charging plug is the charging of charging pile Rifle.Certainly, rechargeable devices may be other rechargeable devices such as laptop, mobile phone, the present embodiment to this without It limits.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting Understand, the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright Aobvious variation is readjusted, be combined with each other and is substituted without departing from the scope of protection of the utility model.Therefore, although passing through Above example is described in further detail the utility model, but the utility model is not limited only to the above implementation Example can also include other more equivalent embodiments in the case where not departing from the utility model design, and the utility model Range is determined by scope of the appended claims.

Claims (9)

1. a kind of charging interface state detection circuit, which is characterized in that including:Charging interface wake-up module, power module, charging Interface status acquisition module and processor module;
The input terminal of the charging interface wake-up module is electrically connected with charging interface, defeated for detecting charging plug connection status Outlet is electrically connected with the input terminal of the power module, for exporting wake-up signal to the power module;
The output end of the power module is electrically connected with the first input end of the processor module, is used for the processor die Block exports power supply signal;
The output end of the processor module is electrically connected with the first input end of the charging interface state acquisition module, for The charging interface state acquisition module exports the first open signal or the first shutdown signal;
Second input terminal of the charging interface state acquisition module is electrically connected with the charging interface, output end and the processing Second input terminal of device module is electrically connected, for exporting the charging plug and the charging interface to the processor module Connection status signal.
2. charging interface state detection circuit according to claim 1, which is characterized in that the charging interface wake-up module Including:Switch triggering unit and switch unit;
Input terminal of the input terminal of the switch triggering unit as the charging interface wake-up module, with charging interface electricity Connection, output end are electrically connected with the input terminal of the switch unit, for exporting the second open signal to the switch unit;
Output end of the output end of the switch unit as the charging interface wake-up module, the input with the power module End electrical connection, for exporting wake-up signal to the power module.
3. charging interface state detection circuit according to claim 2, which is characterized in that the switch triggering unit, packet It includes:First diode, the first divider resistance and the second divider resistance;
Input terminal of the cathode of first diode as the switch triggering unit, is electrically connected, just with the charging interface Pole is electrically connected with the first end of first divider resistance;
The second end of first divider resistance is electrically connected with the first end of second divider resistance, and is touched as the switch The output end of bill member, is electrically connected with the input terminal of the switch unit;
The second end of second divider resistance is electrically connected with the first level output end.
4. charging interface state detection circuit according to claim 3, which is characterized in that the switch unit includes:Every DC capacitor, first switch pipe and the first pull down resistor;
Input terminal of the first end of the partiting dc capacitor as the switch unit, the second end with first divider resistance Electrical connection, second end are electrically connected with the control terminal of the first switch pipe;
The first end of the first switch pipe is electrically connected with first level output end, second end and first pull down resistor First end electrical connection, and as the output end of the switch unit, be electrically connected with the input terminal of the power module;
The second end of first pull down resistor is grounded.
5. charging interface state detection circuit according to claim 1, which is characterized in that the charging interface state acquisition Module includes:State acquisition start unit and state acquisition unit;
First input end of the input terminal of the state acquisition start unit as the charging interface state acquisition module, with institute State the output end electrical connection of processor module, output end is electrically connected with the first input end of the state acquisition unit, be used for The state acquisition unit exports third open signal;
Second input terminal of second input terminal of the state acquisition unit as the charging interface state acquisition module, with institute State charging interface electrical connection, output end of the output end as the charging interface state acquisition module, with the processor module The electrical connection of the second input terminal, the connection status signal for obtaining the charging plug and the charging interface, and to described Processor module exports the connection status signal.
6. charging interface state detection circuit according to claim 5, which is characterized in that the state acquisition start unit Including:Second switch pipe and third switching tube;
Input terminal of the control terminal of the second switch pipe as the state acquisition start unit, with the processor module Output end is electrically connected, and first end ground connection, second end is electrically connected with the control terminal of the third switching tube, for the third to be connected Switching tube;
The first end of the third switching tube is electrically connected with the first level output end, and second end starts single as the state acquisition The output end of member, is electrically connected with the first input end of the state acquisition unit.
7. charging interface state detection circuit according to claim 6, which is characterized in that the state acquisition unit packet It includes:First pull-up resistor and the second diode;
First input end of the first end of first pull-up resistor as the state acquisition unit, with the third switching tube Second end electrical connection, the positive of second end and second diode be electrically connected, and as the defeated of the state acquisition unit Outlet is electrically connected with the second input terminal of the processor module;
Second input terminal of the cathode of second diode as the state acquisition unit, is electrically connected with the charging interface It connects.
8. a kind of rechargeable devices, which is characterized in that examined including the claims 1-7 any one of them charging interface states Slowdown monitoring circuit.
9. rechargeable devices according to claim 8, which is characterized in that the rechargeable devices are electric vehicle.
CN201820473409.9U 2018-03-30 2018-03-30 A kind of charging interface state detection circuit and rechargeable devices Active CN208006760U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109995106A (en) * 2019-03-28 2019-07-09 维沃移动通信有限公司 A kind of charging circuit, terminal device and charging equipment
WO2021142666A1 (en) * 2020-01-15 2021-07-22 深圳市大疆创新科技有限公司 Battery management method and system, battery, charger, and movable platform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109995106A (en) * 2019-03-28 2019-07-09 维沃移动通信有限公司 A kind of charging circuit, terminal device and charging equipment
WO2021142666A1 (en) * 2020-01-15 2021-07-22 深圳市大疆创新科技有限公司 Battery management method and system, battery, charger, and movable platform

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