CN107621565A - High voltage detection circuit, detector, battery device and vehicle - Google Patents
High voltage detection circuit, detector, battery device and vehicle Download PDFInfo
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- CN107621565A CN107621565A CN201710994718.0A CN201710994718A CN107621565A CN 107621565 A CN107621565 A CN 107621565A CN 201710994718 A CN201710994718 A CN 201710994718A CN 107621565 A CN107621565 A CN 107621565A
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 21
- 230000005611 electricity Effects 0.000 claims description 14
- 239000004065 semiconductor Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 16
- 238000010438 heat treatment Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 230000036413 temperature sense Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000007726 management method Methods 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005669 field effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides a high-voltage detection circuit, a detector, a battery device and a vehicle, wherein the high-voltage detection circuit comprises: a controller having a signal receiving port and a signal output port; the current detection sub-circuit is used for collecting a current signal at the inner side of a main negative switch in a high-voltage circuit of the battery and transmitting the current signal to the signal receiving port; and the switch driving sub-circuit is used for acquiring a switch control signal through the signal output port and generating a corresponding switch driving signal according to the switch control signal. Through the technical scheme of the invention, the cost of a wire consumed by an isolation unit and long-distance connection is saved, the safety of a circuit is improved, the transmission distance of the switch control signal is at least shortened, the energy loss of the switch control signal in the transmission process is reduced, the switch to be controlled is more accurately controlled, and the transmission speed of the switch control signal is also improved.
Description
【Technical field】
The present invention relates to cell art, more particularly to a kind of high-voltage detecting circuit, detector, cell apparatus and delivery
Instrument.
【Background technology】
At present, the trend that electric automobile replacing fuel oil automobile has developed as car industry, and the safety problem of on-vehicle battery
Turn into one of the problem of hindering electric automobile to promote.At present, in order to reduce the peace of the high tension loop of on-vehicle battery at work
Full property risk to the state of each relay in high tension loop, it is necessary to be controlled, in need of work or to detect uneasiness
The related relay in high tension loop is controlled to be opened or closed when total factor.
In correlation technique, the circuit where each relay in the high tension loop of on-vehicle battery is separately positioned, and connects
The battery management unit (Battery Management Unit, BMU) of the low-pressure section of on-vehicle battery is connected to, by battery management
Unit is controlled, and is so required wire harness and is attached low-pressure section and high tension loop.
On the other hand, for ensure low-pressure section and high tension loop can normal work, isolated location need to be set low-pressure section and
High tension loop is kept apart, however, this complex circuit designs are error-prone, meanwhile, set isolated location cost also very high.
Therefore, the excessively complicated technical problem of the internal circuit configuration of on-vehicle battery in correlation technique at least be present.
【The content of the invention】
The embodiments of the invention provide a kind of high-voltage detecting circuit, detector, cell apparatus and delivery vehicle, it is intended to solves
The excessively complicated technical problem of the internal circuit configuration of on-vehicle battery in correlation technique, the internal circuit of on-vehicle battery can be simplified
Structure, reduce its cost.
In a first aspect, the embodiments of the invention provide a kind of high-voltage detecting circuit, including：Controller, there is signal to receive
Port and signal output port；Current sense subcircuit, for gathering the electric current of the negative switch inner side of the master in cell high voltage loop
Signal, and by the current signal transfer to the receiver port；Switch drive sub-circuit, for defeated by the signal
Exit port gathers switch controlling signal, and the switching drive signal according to corresponding to switch controlling signal generation.
In the above embodiment of the present invention, alternatively, in addition to：Switch to be controlled, it is connected to the switch drive electricity
Road, open and-shut mode is adjusted for gathering the switching drive signal, and according to the switching drive signal.
In the above embodiment of the present invention, alternatively, in addition to：The switch to be controlled includes preliminary filling switchs, trickle charge is opened
It is at least one in pass, heater switch, main negative switch, main positive switch and fast charge switch.
In the above embodiment of the present invention, alternatively, the switch to be controlled includes relay and/or metal-oxide-semiconductor.
In the above embodiment of the present invention, alternatively, the quantity of the switch drive sub-circuit, the signal output port
Quantity and the quantity of the switch to be controlled be one or more；The first end of each switch drive sub-circuit is used for
The switch controlling signal is gathered by the signal output port, the second end of each switch drive sub-circuit is used for will
The switching drive signal is transmitted to the switch to be controlled.
In the above embodiment of the present invention, alternatively, the switch drive sub-circuit includes：Switch driver, it is described to open
The first end for closing driver is connected to the signal output port, and the second end of the switch driver is connected to described to be controlled
Switch.
In the above embodiment of the present invention, alternatively, the current sense subcircuit includes：Current detection component, it is described
The first end of current detection component and the negative pole of battery modules connect, and the second end of the current detection component is born with the master opens
The inner side connection of pass, the 3rd end and the 4th end of the current detection component are connected to the controller.
In the above embodiment of the present invention, alternatively, the current detection component includes：Current divider, the shunting utensil
There is built-in resistor, the first end of the current divider is connected with the negative pole of the battery modules, the second end of the current divider and institute
The inner side connection of main negative switch is stated, the both ends of the built-in resistor of the current divider are connected to the controller.
In the above embodiment of the present invention, alternatively, the current sense subcircuit also includes：First temperature sense group
Part, the position contacted on the outside of the current divider and with the built-in resistor of the current divider is arranged at, is connected to the controller.
In the above embodiment of the present invention, alternatively, the first temperature sense component is negative tempperature coefficient thermistor.
In the above embodiment of the present invention, alternatively, in addition to：Isolation strip, it is arranged at the cell high voltage loop and electricity
The fringe region of pond low tension loop connection；The controller also has signal of communication transmitting-receiving port, correspondingly, the high pressure detection
Circuit also includes：Communication component, is arranged on the opening position of the isolation strip, and the first end of the communication component is connected to the control
The signal of communication transmitting-receiving port of device processed, the second end of the communication component is connected to the general control system of peripheral hardware.
In the above embodiment of the present invention, alternatively, the communication component is isolating chip.
In the above embodiment of the present invention, alternatively, the controller also has electric energy receiving port, correspondingly, described
High-voltage detecting circuit also includes：Power Supply Assembly, the opening position of the isolation strip is arranged on, is connected to the electricity of the controller
Can receiving port.
Second aspect, the embodiments of the invention provide a kind of high-voltage detecting circuit, including：Controller, there is signal to receive
Port and signal output port；Current sense subcircuit, the first end of the current sense subcircuit are connected to the controller
The receiver port, master that the second end of the current sense subcircuit is connected in the cell high voltage loop is negative to open
The inner side of pass；Switch drive sub-circuit, the first end of the switch drive sub-circuit are connected to the signal of the controller
Output port, the second end of the switch drive sub-circuit are connected to the switch to be controlled in the cell high voltage loop.
The third aspect, the embodiments of the invention provide a kind of detector, including the height any one of above-described embodiment
Pressure detection circuit.
Fourth aspect, the embodiments of the invention provide a kind of cell apparatus, including any one of above-described embodiment
High-voltage detecting circuit.
5th aspect, the embodiments of the invention provide a kind of delivery vehicle, including any one of above-described embodiment
High-voltage detecting circuit.
In addition, the embodiments of the invention provide a kind of circuit board, for integrated battery high tension loop or the battery high pressure
The detection circuit in loop, including the high-voltage detecting circuit any one of above-described embodiment.
Above technical scheme, asked for the excessively complicated technology of the internal circuit configuration of the on-vehicle battery in correlation technique
Topic, current sense subcircuit separate in cell high voltage loop and each switch drive sub-circuit is integrated, by electricity
Stream detection sub-circuit and each switch drive sub-circuit are connected to the controller for being originally used for control electric current detection sub-circuit, with even
The mode for connecing the controller instead of original connection BMU mode, and the controller can either control detection cell high voltage loop
In the negative switch inner side of master current signal, additionally it is possible to send switch controlling signal to switch drive sub-circuit, make switch drive
Sub-circuit is switched off or closed according to switch controlling signal driving is to be controlled.
So, each switch drive sub-circuit is just attached without the BMU with low-pressure section, so as to also need not just set phase
Isolated location in the technology of pass isolates high tension loop and low-pressure section, has both saved isolated location and connection over long distances is consumed
Wire cost, also improve the security of circuit.Meanwhile on this basis, also at least shorten the biography of switch controlling signal
Defeated distance, energy loss of the switch controlling signal in transmitting procedure was both reduced so that treat the control of controlling switch more
Accurately, the transmission speed of switch controlling signal is also improved, so as to the overall performance for improving battery.
【Brief description of the drawings】
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area
For those of ordinary skill, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the overall schematic of the high-voltage detecting circuit of one embodiment of the present of invention；
Fig. 2 shows the schematic diagram of the high-voltage detecting circuit of an alternative embodiment of the invention；
Fig. 3 shows the schematic diagram of the high-voltage detecting circuit of yet another embodiment of the present invention；
Fig. 4 shows the circuit diagram of the high-voltage detecting circuit of one embodiment of the present of invention；
Fig. 5 shows the circuit diagram of the high-voltage detecting circuit of an alternative embodiment of the invention；
What Fig. 6 showed circuit and the battery modules of Fig. 5 mesohighs detection circuit interacts circuit diagram；
Fig. 7 shows the block diagram of the circuit board of one embodiment of the present of invention；
Fig. 8 shows the block diagram of the detector of one embodiment of the present of invention；
Fig. 9 shows the block diagram of the cell apparatus of one embodiment of the present of invention；
Figure 10 shows the block diagram of the delivery vehicle of one embodiment of the present of invention.
【Embodiment】
In order to be better understood from technical scheme, the embodiment of the present invention is retouched in detail below in conjunction with the accompanying drawings
State.
It will be appreciated that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
The term used in embodiments of the present invention is only merely for the purpose of description specific embodiment, and is not intended to be limiting
The present invention." one kind ", " described " and "the" of singulative used in the embodiment of the present invention and appended claims
It is also intended to including most forms, unless context clearly shows that other implications.
Fig. 1 shows the overall schematic of the high-voltage detecting circuit of one embodiment of the present of invention.
As shown in figure 1, the embodiments of the invention provide a kind of high-voltage detecting circuit 100, including：Controller 102, electric current inspection
Survey sub-circuit 104 and switch drive sub-circuit 106.Controller 102 has receiver port 1024 and signal output port
1022, the first end of current sense subcircuit 104 is connected to the receiver port 1024 of controller 102, current detecting son electricity
The inner side for the negative switch 204 of master that second end on road 104 is connected in cell high voltage loop, the first of switch drive sub-circuit 106
End is connected to the signal output port 1022 of controller 102, and the second end of switch drive sub-circuit 106 is connected to battery height and pushed back
Switch to be controlled 108 in road.
The inner side that switch is referred to as switching close to one end of battery modules 202, the other end are referred to as the outside switched, main negative here
The inner side of switch 204 refers to main negative switch 204 close to one end of battery modules 202.In addition, there is it in cell high voltage loop
His partial circuit 206, the concrete structure of other parts circuit 206 not shown in figure.
Wherein, the electric current letter for the negative inner side of switch 204 of master that current sense subcircuit 104 is used to gather in cell high voltage loop
Number, and by current signal transfer to receiver port 1024, controller 102 is then used to receive by receiver port 1024
The current signal, because the main negative inner side of switch 204 is connected to the negative pole of battery modules 202, controller 102 can be according to the electric current
The scope of signal judges whether battery modules 202 are in normal operating conditions.
Switch drive sub-circuit 106 is then used to gather switch controlling signal by signal output port 1022, and according to opening
Switching drive signal corresponding to control signal generation is closed, and by switching drive signal, is sent to switch 108 to be controlled, driving is treated
Controlling switch 108 is turned on and off.For example when switch 108 to be controlled is that trickle charge switchs, pass through the controlling switch of controller 102
Drive sub-circuits 106 control trickle charge to switch on-off, can be with the trickle charge functional requirement of battery.
To sum up, by current sense subcircuit 104 separate in cell high voltage loop and each switch drive sub-circuit 106
Integrate, current sense subcircuit 104 and each switch drive sub-circuit 106 are connected to and are originally used for control electric current inspection
The controller 102 of sub-circuit 104 is surveyed, original connection BMU mode, the control are instead of with the mode for connecting the controller 102
Device 102 processed can either control the current signal of the negative inner side of switch 204 of the master in detection cell high voltage loop, additionally it is possible to be driven to switch
Mover circuit 106 sends switch controlling signal, switch drive sub-circuit 106 is opened according to switch controlling signal driving is to be controlled
108 are closed to be opened or closed.
So, each switch drive sub-circuit 106 is just attached without the BMU with low-pressure section, so as to also need not just set
The isolated location in correlation technique is put to isolate high tension loop and low-pressure section, has both saved isolated location and over long distances connection institute
The wire cost of consumption, also improve the security of circuit.Meanwhile on this basis, also at least shorten switch controlling signal
Transmission range, both reduced energy loss of the switch controlling signal in transmitting procedure so that treat the control of controlling switch 108
System is more accurate, also improves the transmission speed of switch controlling signal, so as to the overall performance for improving battery.
Fig. 2 shows the schematic diagram of the high-voltage detecting circuit of an alternative embodiment of the invention.
As shown in Fig. 2 on the basis of the structure shown in Fig. 1, in addition to：Switch 108 to be controlled, is connected to switch drive
Sub-circuit 106, open and-shut mode is adjusted for gathering switching drive signal, and according to switching drive signal.
That is, in the embodiment show in figure 1, be only by script by the BMU switch drive sub-circuits 106 control and
Current sense subcircuit 104 is integrated together, and is controlled by the controller 102 of control electric current detection sub-circuit 104, and is scheming
It is the 108 equal current sense subcircuit of switch to be controlled by switch drive sub-circuit 106 and its driving in embodiment shown in 2
104 are integrated together, and are controlled by the controller 102 of control electric current detection sub-circuit 104.
The quantity of the quantity of switch drive sub-circuit 106, the quantity of signal output port 1022 and switch 108 to be controlled is equal
For one or more；The first end of each switch drive sub-circuit 106 is used for by the collection switch control of signal output port 1022
Signal processed, the second end of each switch drive sub-circuit 106 are used to transmit switching drive signal to switch 108 to be controlled.
On this basis, in a kind of implementation of the present invention, each switch 108 to be controlled is corresponding with a switch and driven
Mover circuit 106, and for single switch drive sub-circuits 106, it can individually correspond to a signal output port 1022.So
One, it is ensured that can be realized exactly to be controlled for the switch controlling signal of different switches to be controlled 108
Switch to be controlled 108 control, avoid the occurrence of switch controlling signal erroneous transmissions to without control other switch situations,
The accuracy of switch control is improved, is provided the foundation for protection cell safety.
In another implementation of the present invention, it can be commonly connected to multiple switch drive sub-circuits 106 same
Signal output port 1022, meanwhile, a switch drive sub-circuit 106 can also be connected with multiple switches 108 to be controlled, so
The port number of controller 102 used can be saved, further simplifies circuit, reduces cost.
You need to add is that switch 108 to be controlled includes relay and/or metal-oxide-semiconductor (Metal Oxide
Semiconductor, metal-oxide-semiconductor field effect transistor).Relay and metal-oxide-semiconductor common ground can all be used
Small-signal controls high current, wherein, relay is electric current driving, has the advantages of resistance to fluidity excessively, extra heat endurance is good, can carry out
Electrical isolation, that is to say, that it is relatively low to environmental requirement, and metal-oxide-semiconductor is voltage driving, can be competent at relative to relay bigger
Frequency range, and there is relatively low cost.
Fig. 3 shows the schematic diagram of the high-voltage detecting circuit of yet another embodiment of the present invention, in figure 3, to be controlled to open
Pass includes preliminary filling switchs 2082, trickle charge switch 2084 and heater switch 2086, is respectively connecting to preliminary filling switchs drive sub-circuits
1062nd, trickle charge switch drive sub-circuit 1064 and heater switch drive sub-circuits 1066.Certainly, it is to be controlled in actual scene
Switch is not limited to a kind of this above-mentioned situation, but including but not limited to preliminary filling switchs, trickle charge switch, heater switch, main negative switch,
It is at least one in main positive switch and fast charge switch, it can also be any other switch in high tension loop.
In figure 3, preliminary filling switchs drive sub-circuits 1062, trickle charge switch drive sub-circuit 1064 and heater switch driving
The first end of circuit 1066 is connected to the signal output port 1022 of controller 102.
And in actual scene, preliminary filling switchs drive sub-circuits 1062, trickle charge switch drive sub-circuit 1064 and heating are opened
The preliminary filling signal output port of controller, trickle charge signal output can also be respectively connecting to by closing the first end of drive sub-circuits 1066
Port and heating signal output end mouth.Such a implementation is described in detail with reference to Fig. 4 and Fig. 5 physical circuit.
As shown in figure 4, the circuit of high-voltage detecting circuit includes controller 102, the controller 102 and current detecting son electricity
Road 104, preliminary filling switchs drive sub-circuits 1062, trickle charge switch drive sub-circuit 1064 and the phase of heater switch drive sub-circuits 1066
Even, the master both carried out for control electric current detection sub-circuit 104 in cell high voltage loop bears the inspection of the electric current letter of the inner side of switch 204
Survey, also can be used in controlling preliminary filling switchs drive sub-circuits 1062, trickle charge switch drive sub-circuit 1064 and heater switch driving
Sub-circuit 1066 drives corresponding preliminary filling switchs 2082, trickle charge switch 2084 and heater switch 2086 to be opened and closed.
Wherein, each switch drive sub-circuit can be switch driver, and the first end of switch driver is connected to letter
Number output port, the second end of switch driver are connected to switch to be controlled, and certainly, switch drive sub-circuit 106 is included but not
It is limited to switch driver, the device of switch drive can be carried out with any other.
Thus, preliminary filling switchs drive sub-circuits 1062, trickle charge switch drive sub-circuit 1064 and heater switch driving son electricity
The first end on road 1066 is respectively connecting to the preliminary filling signal output port 10222 of controller 102, trickle charge signal output port
10224 and heating signal output end mouth 10226, preliminary filling switchs drive sub-circuits 1062, the and of trickle charge switch drive sub-circuit 1064
Second end of heater switch drive sub-circuits 1066 is respectively connecting to preliminary filling switchs 2082, trickle charge switch 2084 and heater switch
2086。
Opened as shown in figure 5, the circuit of high-voltage detecting circuit includes preliminary filling loop, trickle charge loop and heating circuit, preliminary filling
It is exactly to be separately positioned on preliminary filling loop a, trickle charge loop b and heating circuit c to close 2082, trickle charge switch 2084 and heater switch 2086
In, and the preliminary filling switchs drive sub-circuits that preliminary filling switchs 2082, trickle charge switch 2084 and heater switch 2086 are respectively connecting to
1062nd, trickle charge switch drive sub-circuit 1064 and heater switch drive sub-circuits 1066.
Anti-reverse unit a1, anti-reverse unit b1 are also respectively provided with preliminary filling loop a, trickle charge loop b and heating circuit c
With anti-reverse unit c1, wherein, anti-reverse unit a1, anti-reverse unit b1 and anti-reverse unit c1 include but is not limited to two poles
Pipe, can be not turned in the case of preliminary filling loop a, trickle charge loop b and heating circuit c reversal connections, to ensure circuit or even whole
The safety of battery.
In addition, preliminary filling loop a is additionally provided with preliminary filling resistance a2, preliminary filling resistance a2 is single resistance or electric resistance array, is used for
For preliminary filling loop current limliting.
High-voltage detecting circuit also includes isolation strip 108, communication component 110 and Power Supply Assembly 112.
Wherein, isolation strip 108 is arranged at the fringe region that cell high voltage loop is connected with battery low tension loop, for separating
Cell high voltage loop and battery low tension loop, lift the security of battery.
Controller 102 also has signal of communication transmitting-receiving port 1026, and communication component 110 is arranged on the position of isolation strip 108
Place, the first end of communication component 110 are connected to signal of communication transmitting-receiving port 1026, and the second end of communication component 110 is connected to outside
If general control system, for carrying out communication interaction with the general control system of peripheral hardware, communication interaction includes but is not limited to electric current inspection
Survey the testing result of sub-circuit 104 and the open and-shut mode of switch to be controlled.Wherein, the general control system of peripheral hardware includes but is not limited to
Battery management system, the overall management system of delivery vehicle and mobile terminal, communication component 110 include but is not limited to isolated core
Piece.
Controller 102 also has electric energy receiving port 1028, and Power Supply Assembly 112 is arranged on the opening position of isolation strip 108, even
The electric energy receiving port 1028 of controller 102 is connected to, for being powered for controller 102.
What Fig. 6 showed circuit and the battery modules 202 of Fig. 5 mesohighs detection circuit 100 interacts circuit diagram, below
Preliminary filling loop a, trickle charge loop b and heating circuit c operation principle are described with reference to Fig. 5 and Fig. 6.
In a kind of implementation of the present invention, the preliminary filling switchs 2082 in a of preliminary filling loop are metal-oxide-semiconductor (Metal Oxide
Semiconductor, metal-oxide-semiconductor field effect transistor), replace the preliminary filling relay used in correlation technique
Device, circuit can be simplified, reduce cost.The break-make of preliminary filling switchs 2082 can control by controller 102, when battery modules 202 are normal
During work, first the main negative switch 204 of closure, is closed again preliminary filling switchs 2082, is charged to capacitive load, after a period of time, disconnects pre-
Switch 2082 is filled, closes main positive switch 210, load capacitance electric discharge.In this way, can effectively prevent the wink of battery modules 202
Between power supply caused by the negative effect of surge current and peak voltage to internal circuit.
In a kind of implementation of the present invention, for trickle charge loop b, trickle charge switch 2084 is metal-oxide-semiconductor, replaces related skill
The trickle charge relay used in art, can simplify circuit, reduce cost.Trickle charge is controlled to switch 2084 break-makes by controller 102, when
During using trickle charge charging modes, the conducting of trickle charge switch 2084, fast charge switch 210 disconnects, when using fast charge charging modes, trickle charge
Switch 2084 disconnects, the conducting of fast charge switch 216.In this way, the trickle charge functional requirement of automobile can be met.
In a kind of implementation of the present invention, for heating circuit, heater switch break-make is controlled by controller 102,
Can reach control heating battery modules 202 purpose, so as to when ambient temperature is too low by heating battery mould
202 are organized to lift the power supply capacity of battery.Meanwhile heater switch can be metal-oxide-semiconductor, the heating relay used in correlation technique is substituted
Device can simplify circuit, reduce cost.
As shown in Figures 4 to 6, current sense subcircuit 104 includes current detection component 1042, current detection component 1042
First end 1042a be connected with the inner side of main negative switch 204, the second end 1042b and battery modules of current detection component 1042
202 negative pole connection, the 3rd end 1042c of current detection component 1042 and the 4th end 1042d are connected to controller 102.Its
In, current detection component 1042 includes but is not limited to current divider, can also be other any devices that can carry out current detecting
Or circuit, when current detection component 1042 is current divider, current divider has a built-in resistor 1042e, the first end of current divider with
The inner side connection of main negative switch 204, the second end of current divider are connected with the negative pole of battery modules 202, the built-in resistor of current divider
1042e both ends are connected to controller 102.
When main positive switch 210 and the main negative closure of switch 204, controller 102 gathers built-in resistor both ends by current divider
Electrical potential difference U1-U2, and pass through U1-U2Difference divided by built-in resistor resistance R0The electric current of battery modules 202 is calculated, it is real
The detection of existing electric current.
In a kind of implementation of the present invention, current sense subcircuit 104 also includes the first temperature sense component 1044
(not shown in figures), the position contacted on the outside of current divider and with the built-in resistor of current divider is arranged at, is connected to controller
102.Wherein, the first temperature sense component 1044 is the electricity of negative tempperature coefficient thermistor, i.e. the first temperature sense component 1044
Resistance is raised and reduced with temperature, and so, controller 102 can gather the changing value of the resistance of the first temperature sense component 1044, and
According to the changing value temperature changing value, that is, can be in circuit temperature rise when be capable of detecting when its temperature change,
Consequently facilitating the electric current of battery modules 202 is further controlled, such as, high tension loop can be disconnected when temperature is too high or reduces battery
The electric current of module 202.Need to know, the present invention in focus on by by the controller 102 of current sense subcircuit 104 simultaneously
Control electric current detects sub-circuit 104 and switch drive sub-circuit 106, and the mode and controller 102 to current detecting are to electricity
The control of stream does not limit, that is to say, that the present invention can carry out the current detecting of battery modules 202 and corresponding in any manner
Control.
As shown in fig. 6, heating circuit is also associated with second temperature inductive component 1046, the second temperature inductive component 1046
For semistor, for detecting the temperature of battery modules 202, reduce and reduce with the temperature of battery modules 202,
So as to increase the electric current passed through, produce radiating, so, controller 102 can according to the resistance of second temperature inductive component 1046 come
The temperature of battery modules 202 is determined, is added so as to when the temperature of battery modules 202 is less than predetermined normal working temperature, close
Thermal switch, start heating circuit, the heating to battery modules 202 is realized by the radiating of second temperature inductive component 1046.
Battery modules 202 are also associated with electric device 212, and electric device 212 is connected with load, can realize battery modules
202 electric discharge, battery modules 202 are also associated with main positive switch 210 and main negative switch 204, and main positive switch and main negative switch are used for
Overload protection is carried out to electric device.
Battery modules 202 are also associated with charging device 214, and charging device 214 includes AC charging device 2142 and direct current
Charging device 2144, charging device 214 is all connected with fast charge switch 216, trickle charge loop b, for realizing to battery modules 202
Charging.
It is the routine of cell high voltage loop in addition, also having other switches not indicated in the circuit shown in Fig. 6
Part, it will not be described here.
Fig. 7 shows the block diagram of the circuit board of one embodiment of the present of invention.
As shown in fig. 7, the circuit board 700 of one embodiment of the present of invention, including Fig. 1 any embodiments into Fig. 6 are shown
High-voltage detecting circuit 100, therefore, the circuit board 700 have and Fig. 1 into Fig. 6 shown in any embodiment high pressure detection electricity
The identical technique effect of road 100, will not be repeated here.
Fig. 8 shows the block diagram of the detector of one embodiment of the present of invention.
As shown in figure 8, the detector 800 of one embodiment of the present of invention, including Fig. 1 any embodiments into Fig. 6 are shown
High-voltage detecting circuit 100, therefore, the detector 800 have and Fig. 1 into Fig. 6 shown in any embodiment high pressure detection electricity
The identical technique effect of road 100, will not be repeated here.
Fig. 9 shows the block diagram of the cell apparatus of one embodiment of the present of invention.
As shown in figure 9, the cell apparatus 900 of one embodiment of the present of invention, including Fig. 1 any embodiments into Fig. 6 are shown
The high-voltage detecting circuit 100 gone out, therefore, the cell apparatus 900 has and high pressures of the Fig. 1 into Fig. 6 shown in any embodiment is examined
The identical technique effect of slowdown monitoring circuit 100, will not be repeated here.
Figure 10 shows the block diagram of the delivery vehicle of one embodiment of the present of invention.
As shown in Figure 10, the delivery vehicle 1000 of one embodiment of the present of invention, including Fig. 1 any embodiments into Fig. 6
The high-voltage detecting circuit 100 shown, therefore, the delivery vehicle 1000 has and high pressures of the Fig. 1 into Fig. 6 shown in any embodiment
The identical technique effect of circuit 100 is detected, will not be repeated here.Wherein, delivery vehicle 1000 includes but is not limited to electric vehicle
And motor vehicle driven by mixed power.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme, both saved
Isolated location and over long distances the consumed wire cost of connection, the security of circuit is also improved, also at least shortens switch control
The transmission range of signal processed, energy loss of the switch controlling signal in transmitting procedure was both reduced so that treat controlling switch
Control it is more accurate, the transmission speed of switch controlling signal is also improved, so as to the overall performance for improving battery.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, represent
There may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, while A and B be present, individualism B these three
Situation.In addition, character "/" herein, it is a kind of relation of "or" to typically represent forward-backward correlation object.
Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when it is determined that when " or " in response to determine " or " when the detection (condition of statement
Or event) when " or " in response to detecting (condition or event of statement) ".
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (15)
- A kind of 1. high-voltage detecting circuit, it is characterised in that including：Controller, there is receiver port and signal output port；Current sense subcircuit, for gathering the current signal of the negative switch inner side of the master in cell high voltage loop, and by the electricity Stream signal is transmitted to the receiver port；Switch drive sub-circuit, for gathering switch controlling signal by the signal output port, and controlled according to the switch Switching drive signal corresponding to signal generation processed.
- 2. high-voltage detecting circuit according to claim 1, it is characterised in that also include：Switch to be controlled, the switch drive sub-circuit is connected to, is opened for gathering the switching drive signal, and according to described Close drive signal adjustment open and-shut mode.
- 3. high-voltage detecting circuit according to claim 2, it is characterised in thatThe switch to be controlled includes preliminary filling switchs, trickle charge switch, heater switch, main negative switch, main positive switch and fast charge switch In it is at least one.
- 4. high-voltage detecting circuit according to claim 3, it is characterised in thatThe switch to be controlled includes relay and/or metal-oxide-semiconductor.
- 5. high-voltage detecting circuit according to claim 2, it is characterised in thatThe quantity of the quantity of the switch drive sub-circuit, the quantity of the signal output port and the switch to be controlled is It is one or more；The first end of each switch drive sub-circuit is used to gather the switch control letter by the signal output port Number, the second end of each switch drive sub-circuit is used to transmit the switching drive signal to the switch to be controlled.
- 6. high-voltage detecting circuit according to any one of claim 1 to 5, it is characterised in that the switch drive electricity Road includes：Switch driver, the first end of the switch driver are connected to the signal output port, the switch driver Second end is connected to the switch to be controlled.
- 7. high-voltage detecting circuit according to any one of claim 1 to 5, it is characterised in that the current detecting electricity Road includes：Current detection component, the first end of the current detection component and the negative pole of battery modules connect, the current detecting group Second end of part is connected with the inner side of the negative switch of the master, and the 3rd end and the 4th end of the current detection component are connected to institute State controller.
- 8. high-voltage detecting circuit according to claim 7, it is characterised in that the current detection component includes：Current divider, the current divider have built-in resistor, and the first end of the current divider is connected with the negative pole of the battery modules, Second end of the current divider is connected with the inner side of the negative switch of the master, and the both ends of the built-in resistor of the current divider are connected to The controller.
- 9. high-voltage detecting circuit according to claim 1, it is characterised in that also include：Isolation strip, it is arranged at the fringe region that the cell high voltage loop is connected with battery low tension loop；The controller also has signal of communication transmitting-receiving port, and correspondingly, the high-voltage detecting circuit also includes：Communication component, is arranged on the opening position of the isolation strip, and the first end of the communication component is connected to the controller The signal of communication receives and dispatches port, and the second end of the communication component is connected to the general control system of peripheral hardware.
- 10. high-voltage detecting circuit according to claim 9, it is characterised in that the communication component is isolating chip.
- 11. high-voltage detecting circuit according to claim 9, it is characterised in that the controller also has electric energy receiving terminal Mouthful, correspondingly, the high-voltage detecting circuit also includes：Power Supply Assembly, the opening position of the isolation strip is arranged on, is connected to the electric energy receiving port of the controller.
- A kind of 12. high-voltage detecting circuit, it is characterised in that including：Controller, there is receiver port and signal output port；Current sense subcircuit, the first end of the current sense subcircuit are connected to the signal receiving end of the controller Mouthful, the master that the second end of the current sense subcircuit is connected in the cell high voltage loop bears the inner side switched；Switch drive sub-circuit, the first end of the switch drive sub-circuit are connected to the signal output part of the controller Mouthful, the second end of the switch drive sub-circuit is connected to the switch to be controlled in the cell high voltage loop.
- 13. a kind of detector, it is characterised in that including the high-voltage detecting circuit as any one of claim 1 to 12.
- 14. a kind of cell apparatus, it is characterised in that including the high-voltage detecting circuit as any one of claim 1 to 12.
- 15. a kind of delivery vehicle, it is characterised in that including the high-voltage detecting circuit as any one of claim 1 to 12.
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| CN201710994718.0A CN107621565B (en) | 2017-10-23 | 2017-10-23 | High voltage detection circuit, detector, battery device and vehicle |
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| CN201710994718.0A CN107621565B (en) | 2017-10-23 | 2017-10-23 | High voltage detection circuit, detector, battery device and vehicle |
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Cited By (1)
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| CN112622791A (en) * | 2019-09-24 | 2021-04-09 | 比亚迪股份有限公司 | High-voltage control system and vehicle |
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