CN106300462B - Electric circuit under battery - Google Patents
Electric circuit under battery Download PDFInfo
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- CN106300462B CN106300462B CN201510260966.3A CN201510260966A CN106300462B CN 106300462 B CN106300462 B CN 106300462B CN 201510260966 A CN201510260966 A CN 201510260966A CN 106300462 B CN106300462 B CN 106300462B
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- contactor
- open type
- power supply
- battery
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Abstract
The invention discloses circuits electric under a kind of battery, and the circuit is applied to the DC uninterrupted powersupply system for including battery pack, especially suitable for the power supply system for communications.Electric circuit includes rectifier, battery pack, open type D.C. contactor, control circuit and load under the battery；Rectifier, for providing main electricity for load；Battery pack, for providing backup power supply for load；Open type D.C. contactor executes lower electric control function to battery pack, power supply of the battery pack to the load is cut off, to protect battery pack for when rectifier does not work without output, and when the voltage of battery pack is lower than preset voltage；Control circuit executes the lower electric control function for controlling open type D.C. contactor.The present invention is to reliably applied to open type D.C. contactor as electric actuator part under battery in DC uninterrupted powersupply system, have the advantages that high reliablity, through-current capability it is strong, it is small in size and it is lower electricity after battery pack without any current drain.
Description
Technical field
The present invention relates to field of power supplies, in particular to electric circuit under a kind of battery.
Background technique
In the DC uninterrupted powersupply system for including battery pack, again to load after rectifier is in parallel with battery pack
Power supply, rectifier work when, by rectifier powering load, at the same give battery pack charging, when exchange have a power failure, rectifier cannot
When work, by battery pack powering load, this working method, it is ensured that the power supply of load will not be interrupted.But direct current not between
The capacity of the battery pack of disconnected powersupply system is limited, and battery pack is to have certain time limit to the backup time of load
, when the overlong time that exchange has a power failure, battery pack is chronically at discharge condition, if the discharge time of battery pack has been more than its institute
Continue to discharge after the electric discharge time limit of permission, irreversible damage will be caused to battery pack.Therefore, in DC uninterrupted power supply
The battery current supply circuit of power-supply system will be installed a D.C. contactor (or power relay) and hold as the lower electricity of battery
Row device, when needed, the discharge loop of battery pack to be cut off, to protect battery pack not damaged, by the electric discharge of battery pack
Circuit cutting is exactly electricity under battery described in DC uninterrupted powersupply system, in general, under lower electric actuator part
Electronic work is controlled by the power supply monitor in DC uninterrupted powersupply system.Under battery after electricity, the power supply of load
Also it just interrupts.
In the prior art, electrical part switchs under battery, can be D.C. contactor, is also possible to power relay, direct current
The contact form of contactor or power relay can be normally closed contact, normal opened contact or magnetic freeze mode.Currently, using normal
Close the D.C. contactor (abbreviation closed type D.C. contactor) of contact or power relay (the abbreviation closed type relay of normally closed contact
Device) as battery lower electric actuator part it is relatively common, control circuit is also relatively simple, and reliability is also high, from power-supply system
It not will disconnect battery pack after removing power supply monitor, but use closed type D.C. contactor or closed type relay as battery
Lower electric actuator part there are also deficiencies, such as: the closed type D.C. contactor (or closed type relay) of same volume,
Through-current capability does not have the height of open type D.C. contactor (or normal-open type relay)；In addition, closed type D.C. contactor (or it is normally closed
Type relay) movement when, line packet needs to power, therefore, closed type D.C. contactor (or closed type relay) movement after still
So need to consume some electric energy, it is unfavorable to protection battery；Meanwhile under battery after electricity, power supply monitor is removed from power-supply system
Afterwards, the power supply of the line packet of closed type D.C. contactor (or closed type relay) will disconnect, and battery is connected automatically to power supply system again
In system, upper electrical characteristics cannot be met the requirements this battery in certain applications automatically.
And when using lower electric actuator part of the magnetism holding type D.C. contactor (or magnetism holding type relay) as battery,
Controlling signal is pulsed, more complex so as to cause control circuit, in addition, magnetism holding type D.C. contactor (or magnetism holding type
Relay) itself price it is more expensive.
Currently, using normal opened contact D.C. contactor (abbreviation open type D.C. contactor) or normal opened contact power after
Electric appliance (abbreviation normal-open type relay) is as the lower electric actuator part of battery, and more rare, main cause is straight using open type
Flow contactor or normal-open type relay as under battery when electric actuator part, to the bad processing of the reliability of electric control under battery,
Also, when power supply monitor powers off, it is easy to appear the extremely lower electricity of battery or exception powers on.
Summary of the invention
The main object of the present invention is to provide a kind of using open type D.C. contactor or normal-open type relay as under battery
Electric actuator part and has electric circuit under the battery of high reliability.
To achieve the above object, the present invention provides electric circuit under a kind of battery, under the battery electric circuit be applied to comprising
There is the DC uninterrupted powersupply system of battery pack, electric circuit includes rectifier, battery pack, open type direct current under the battery
Contactor, control circuit and load；Wherein,
The rectifier, for providing main electricity for the load；
The battery pack, for providing backup power supply for the load；
The open type D.C. contactor, for when the rectifier does not work without output, and when the battery pack
When voltage is lower than preset voltage, lower electric control function is executed to the battery pack, cuts off the battery pack to the load
Power supply, to protect the battery pack；
The control circuit executes the lower electric control function for controlling the open type D.C. contactor.
Preferably, the control circuit is specifically used for:
It is described when the rectifier does not work without output, and when the voltage of the battery pack is lower than preset voltage
Control circuit cuts off the power supply to the line packet of the open type D.C. contactor, controls the normally opened of the open type D.C. contactor
Contact is in an off state, electric under the battery pack to control.
Preferably, the control circuit is also used to:
When the battery pack is in power-down state, and when the rectifier resumes work and has output, the control
Circuit connects the power supply to the line packet of the open type D.C. contactor, controls the normally opened contact of the open type D.C. contactor
Closure, is powered on controlling the battery pack.
Preferably, the first end of the load is connect with the anode of the output end of the rectifier, and the second of the load
End is connect with the cathode of the output end of the rectifier；The battery pack anode respectively with the output end of the rectifier just
The connection of the first end of pole and the load, the of the normally opened contact of the cathode of the battery pack and the open type D.C. contactor
One end connection, the second end of the normally opened contact of the open type D.C. contactor cathode with the output end of the rectifier respectively
And the second end connection of the load；The line packet of the open type D.C. contactor is connect with the control circuit；It is described normally opened
The power supply of the line packet of type D.C. contactor is controlled by the control circuit.
Preferably, the control circuit includes first diode, the second diode, the first key, is used for described normally opened
Closed type relay that the power supply state of the line packet of type D.C. contactor is controlled and for the work to the rectifier
The power supply monitor that the voltage of state and the battery pack is monitored；Wherein,
The cathode of the first diode is connect with the cathode of the output end of the rectifier, the sun of the first diode
Pole is connect with the first end of the line packet of the open type D.C. contactor；
The cathode of second diode is connect through first key with the cathode of the battery pack, the two or two pole
The anode of pipe is connect with the first end of the line packet of the open type D.C. contactor；
The first of the normally-closed contact of the second end of the line packet of the open type D.C. contactor and the closed type relay
End connection, the second end of the normally-closed contact of the closed type relay are connect with the positive of the battery pack, the closed type after
The first end of the line packet of electric appliance is connect with the anode of the lower electric control output end of the power supply monitor, the closed type relay
The second end of line packet connect with the cathode of the lower electric control output end of the power supply monitor；The power supply of the power supply monitor
The anode of input terminal is connect with the anode of the battery pack, the cathode of the power input of the power supply monitor and the rectification
The cathode of device connects.
Preferably, between the cathode of the output end of the second end of the load and the rectifier and the battery pack
Overcurrent protector is also connected between the first end of the normally opened contact of cathode and the open type D.C. contactor, the overcurrent is protected
Shield device is fuse, fuse or air switch.
Preferably, the open type D.C. contactor can be replaced by normal-open type relay.
Preferably, the rectifier can be replaced by DC/DC converter.
Electric circuit under battery provided by the invention, electric circuit is to contain there is the DC uninterrupted of battery pack under the battery
Powersupply system, electric circuit includes rectifier, battery pack, open type D.C. contactor, control circuit and negative under the battery
It carries；The rectifier, for providing main electricity for the load；The battery pack, for providing standby for the load
Power supply；The open type D.C. contactor, for when the rectifier does not work without output, and when the battery pack
When voltage is lower than preset voltage, lower electric control function is executed to the battery pack, cuts off the battery pack to the load
Power supply, to protect the battery pack；The control circuit, for control the open type D.C. contactor execute it is described under it is automatically controlled
Function processed.The present invention reliably applies open type D.C. contactor (or normal-open type relay) as electric actuator part under battery
Under battery in DC uninterrupted powersupply system in electric circuit, electric circuit has high reliablity, leads under battery of the present invention
The advantages of stream ability is strong, battery pack is without any current drain after small in size and lower electricity；Also, as electric actuator part under battery
Open type contactor can also be replaced with normal-open type relay, the electric actuator part under use normal-open type relay is as battery
When, circuit structure is identical；Meanwhile electric circuit also has the advantages that structure is simple and easily realizes under battery of the present invention.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of electric circuit first embodiment under battery of the present invention；
Fig. 2 is the structural schematic diagram of electric circuit second embodiment under battery of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides electric circuit under a kind of battery.
Referring to Fig.1, Fig. 1 is the structural schematic diagram of electric circuit first embodiment under battery of the present invention.
In the present embodiment, under the battery electric circuit be applied to include battery pack DC uninterrupted powersupply system,
Especially suitable for the power supply system for communications.In the present embodiment, under the battery electric circuit include rectifier 101, it is battery pack 102, normally opened
Type D.C. contactor KM1, control circuit 103 and load RL.
Wherein, the rectifier 101, rectifies for the alternating current to AC power source (not shown), exports a direct current
Power supply provides main electricity for the load RL.In the present embodiment, the rectifier 101 can be replaced by DC/DC converter.
The battery pack 102, for providing backup power supply for the load RL；
The open type D.C. contactor KM1, for when the rectifier 101 do not work without output when, and work as the electricity
When the voltage of pond group 102 is lower than preset voltage, lower electric control function is executed to the battery pack 102, cuts off the battery pack
The power supply of 102 couples of load RL, to protect the battery pack 102；
The control circuit 103 executes the lower electric control function for controlling the open type D.C. contactor KM1.
In the present embodiment, the control circuit 103 is specifically used for: when the rectifier 101 does not work without output, and working as
When the voltage of the battery pack 102 is lower than preset voltage, the cutting of control circuit 103 is to the open type D.C. contactor
The power supply of the line packet of KM1, the contact for controlling the open type D.C. contactor KM1 is in an off state, to control the battery
Group 102 is lower electric, and after the lower electricity of the battery pack 102, the battery pack 102 stops the power supply to the load RL.
Further, in this embodiment the control circuit is also used to: when the battery pack 102 is in power-down state,
And when the rectifier 101 restores and has output, the control circuit 103 is connected to the open type D.C. contactor KM1
Line packet power supply, control the contact closure of the open type D.C. contactor KM1, powered on controlling the battery pack 102.
Specifically, in the present embodiment, the anode (+) of the output end of the first end and rectifier 101 of the load RL
The second end of connection, the load RL is connect with the cathode (-) of the output end of the rectifier 101；The battery pack 102 is just
Pole BATT+ is connect with the first end of the anode (+) of the output end of the rectifier 101 and the load RL respectively, the battery
The cathode BATT- of group 102 is connect with the first end of the normally opened contact of the open type D.C. contactor KM1, and the open type is straight
Flow contactor KM1 normally opened contact second end respectively with the cathode (-) of the output end of the rectifier 101 and the load RL
Second end connection；The line packet of the open type D.C. contactor KM1 is connect with the control circuit 103.The open type is straight
The power supply for flowing the line packet of contactor KM1 is controlled by the control circuit 103.
In the present embodiment, the control circuit 103 includes first diode D1, the second diode D2, the first key S1, uses
It the closed type relay K1 that is controlled in the power supply state of the line packet to the open type D.C. contactor KM1 and is used for
The power supply monitor 1031 that the voltage of working condition and the battery pack 102 to the rectifier 101 is monitored.
Specifically, the cathode of the first diode D1 is connect with the cathode (-) of the output end of the rectifier 101, institute
The anode for stating first diode D1 is connect with the first end of the line packet of the open type D.C. contactor KM1；Two or two pole
The cathode of pipe D2 is connect through the first key S1 with the cathode BATT- of the battery pack 102, the sun of the second diode D2
Pole is connect with the first end of the line packet of the open type D.C. contactor KM1；The line packet of the open type D.C. contactor KM1
Second end is connect with the first end of the normally-closed contact of the closed type relay K1, the normally-closed contact of the closed type relay K1
Second end connect with the positive BATT+ of the battery pack 102, the first end of the line packet of the closed type relay K1 with it is described
Anode (+) connection of the lower electric control output end of power supply monitor 1031, the second end of the line packet of the closed type relay K1
It is connect with the cathode (-) of the lower electric control output end of the power supply monitor 1031；The power supply of the power supply monitor 1031 is defeated
The anode (+) for entering end is connect with the positive BATT+ of the battery pack 102, the power input of the power supply monitor 1031
Cathode (-) is connect with the cathode (-) of the rectifier 101.
Further, under the present embodiment battery electric circuit the load RL second end and the rectifier 101 it is defeated
Between the cathode (-) of outlet and the cathode BATT- of the battery pack 102 and open type D.C. contactor KM1 it is normally opened
It is also connected with overcurrent protector between the first end of contact, which can be fuse, fuse or air switch.
In the present embodiment, which is fuse, and the fuse includes the first fuse FU1 and the second fuse FU2.Tool
Body, the first fuse FU1 is connected in series with the cathode of the second end of the load RL and the output end of the rectifier 101
Between (-)；The second fuse FU2 is connected in series with the cathode BATT- and the open type D.C. contactor of the battery pack 102
Between the first end of the normally opened contact of KM1.
The working principle of electric circuit is described in detail below under the present embodiment battery: the power supply of the power supply monitor 1031 by
It being provided at BUS- in figure, this power supply mode, after the lower electricity of the battery pack 102, the power supply monitor 1031 is not also powered,
So that the battery pack 102 will not consume any electric current, be conducive to protect battery pack 102, this design, particularly suitable for
Unattended communications office site.
The power supply of the line packet of the open type D.C. contactor KM1 by the normally closed relay K1 control, when described whole
Stream device 101 work and when having output (when i.e. AC power source input is normal), the power supply monitor 1031 control it is described it is normally closed after
Electric appliance K1 is failure to actuate, and the normally closed relay K1 closure, the current supply circuit of the line packet of the open type D.C. contactor KM1 connects
It is logical, the open type D.C. contactor KM1 movement, i.e., the contact closure of the described open type D.C. contactor KM1, the battery pack
102 are in power-up state.
When the rectifier 101 does not work without output (when i.e. AC power source has a power failure), the battery pack 102 is discharged, and is
The load RL provides power supply, and after the battery pack 102 is discharged, the voltage of the battery pack 102 will be slow decline, work as institute
State battery pack 102 voltage drop to preset voltage after, the power supply monitor 1031 can control the normally closed relay K1
Movement, so that the contact of the normally closed relay K1 disconnects, the current supply circuit quilt of the line packet of the open type D.C. contactor KM1
The normally closed relay K1 is disconnected, so that the contact of the open type D.C. contactor KM1 disconnects, the battery pack 102
Under it is electronic complete, meanwhile, the power supply monitor 1031 power-off (after electric i.e. under the battery pack 102, the Power Supply Monitoring
Device 1031 also powers off), i.e., down after electricity, the whole load of the battery pack 102 is all disconnected the described battery pack 102.The battery
After the lower electricity of group 102, the connection in figure between BUS- and BATT- is disconnected, the power supply of the line packet of the open type D.C. contactor KM1
Circuit non-transformer, at this point, the normally closed contact of the normally closed relay K1 is closed because the power supply monitor 1031 powers off, but because
For at BUS- at this time without electricity, so the line Bao Wu electricity of the open type D.C. contactor KM1, the open type D.C. contactor
KM1 remains off-state, and electric circuit is in stable battery power-down state under the present embodiment battery at this time.
After the lower electricity of the battery pack 102, if AC power source is sent a telegram here again, the rectifier 101 is resumed work automatically, i.e.,
Service restoration in figure at BUS-, the line packet of the open type D.C. contactor KM1 is also for powering on, so the open type direct current
Contactor KM1 movement, normal opened contact closure, the battery pack 102 is linked into power-supply system, the power supply monitor
1031 power supply also restores, and the power supply monitor 1031 will not issue lower electric control signal again at this time, so the battery
Group 102 is in stable power-up state.
Electric circuit is by the control circuit 103 to the line of the open type D.C. contactor KM1 under the present embodiment battery
The power supply of packet is controlled, with realize to the battery pack 102 reliably power on, can on the lower electricity and it is lower electricity after the battery pack
102 requirements without any current drain.
The switch motion of the closed type relay K1 is used for by the control of the power supply monitor 1031 to described normally opened
The power supply of the line packet of type D.C. contactor KM1 is controlled.In the present embodiment, the line packet of the closed type relay K1 itself
Power supply is provided by the power supply monitor 1031.In the present embodiment, the supply voltage of the line packet of the closed type relay K1 can
To be 5V, 12V or 24V etc., after the power failure of the power supply monitor 1031, these power supplys can disappear simultaneously, thus described
Closed type relay K1 can be closed automatically.
The open type D.C. contactor KM1 is used as electric switch under battery in electric circuit under the present embodiment battery, also
It is that the control battery pack 102 powers on or the motion device of lower electricity, the battery pack 102 is linked into power-supply system referred to as
Battery powers on, and the battery pack 102 is disconnected with power-supply system and is referred to as electricity under battery.
In the present embodiment, there are two circuits for the line packet power supply of the open type D.C. contactor KM1, wherein described normally opened
The power supply anode of the line packet of type D.C. contactor KM1 is connected to power supply by controlling the normally closed contact of the normally closed relay K1
The anode (first end of label BUS+ namely the load RL in corresponding diagram) of system, the open type D.C. contactor KM1
The power supply cathode of line packet include two link circuits, be power-supply system is connected to by the first diode D1 negative all the way
Pole (second end of label BUS- in corresponding diagram namely the load RL), another way be by the second diode D2 and
The cathode BATT- of the battery pack 102 is connected to after the first key S1 series connection.
Electric circuit has the feature that under the present embodiment battery
Control of the lower electric actuator part of the battery pack 102 by the power supply monitor 1031, the power supply monitor
1031 can control the battery pack 102 as power-up state, and also can control the battery pack 102 is power-down state.The electricity
Source monitor 1031 is by monitoring the voltage (or remaining battery capacity of the battery pack 102) of the battery pack 102 and exchanging
The blackout condition etc. of power supply, battery pack 102 described in reed time controll is lower electric or powers on.
When the power supply monitor 1031 is removed from power-supply system, if the not lower electricity of the battery pack 102, because described
The power supply of the line packet of normally closed relay K1 stops, and the normally closed relay K1 is failure to actuate (the normally closed relay K1 i.e. at this time
For closed state) so that the power supply of the line packet of the open type D.C. contactor KM1 will not be interrupted, therefore the battery
Group 102 will not be surprisingly lower electric；If the battery pack 102 has descended electricity, i.e., non-transformer at BUS- in figure, by the Power Supply Monitoring
When device 1031 is removed from power-supply system, the line packet of the open type D.C. contactor KM1 still keeps out of power, therefore the battery
Group 102 still remains power-down state.
After the lower electricity of the battery pack 102, if AC power source replys power supply, the rectifier 101 is resumed work, and is at this time
1031 non-transformer of power supply monitor is set not work, the open type D.C. contactor KM1 still can be closed automatically.
Meanwhile electric circuit has a power failure in AC power source under the present embodiment battery, the rectifier 101 does not work, the battery
In the case that group 102 is in power-down state, it can manually click the first key S1 and the battery pack 102 is allowed to power on and protect
It holds.
In addition, it is necessary to explanation, the open type D.C. contactor KM1 under the present embodiment battery in electric circuit can be by
Normal-open type relay replaces.
Electric circuit under battery provided in this embodiment, under the battery electric circuit to contain the direct current for having battery pack not between
Disconnected powersupply system, under the battery electric circuit include rectifier, battery pack, open type D.C. contactor, control circuit and
Load；The rectifier, for providing main electricity for the load；The battery pack, after being provided for the load
Standby power supply；The open type D.C. contactor, for when the rectifier do not work without output when, and work as the battery pack
Voltage when being lower than preset voltage, lower electric control function is executed to the battery pack, cuts off the battery pack to the load
Power supply, to protect the battery pack；The control circuit executes the lower electricity for controlling the open type D.C. contactor
Control function.Embodiment reliably answers open type D.C. contactor (or normal-open type relay) as electric actuator part under battery
For in circuit electric under the battery in DC uninterrupted powersupply system, under embodiment battery electric circuit have high reliablity,
The advantages of through-current capability is strong, battery pack is without any current drain after small in size and lower electricity；Also, as electric actuator part under battery
Open type contactor can also be replaced with normal-open type relay, when using normal-open type relay as battery under electric actuator part
When, circuit structure is identical；Meanwhile electric circuit also has the advantages that structure is simple and easily realizes under embodiment battery.
It is the structural schematic diagram of electric circuit second embodiment under battery of the present invention referring to Fig. 2, Fig. 2.
In the present embodiment, electric circuit includes rectifier 201, battery pack 202, open type D.C. contactor under the battery
KM21, control circuit 203 and load RL2.The control circuit 203 includes first diode D21, the second diode D22, third
Diode D3, the 4th diode D4, the first key S21, closed type relay K21 and power supply monitor 2031.
In the present embodiment, the rectifier 201, battery pack 202, open type D.C. contactor KM21 and control circuit 203
Function and module between connection relationship it is identical as embodiment illustrated in fig. 1, details are not described herein again.
The internal circuit configuration that only difference is that the control circuit 203 of the present embodiment and embodiment illustrated in fig. 1
It is different from the circuit structure of control circuit 103 described in Fig. 1, difference specifically: the power supply of the power supply monitor 2031 with
The power supply of power supply monitor 1031 described in Fig. 1 is different.In the present embodiment, the power input of the power supply monitor 2031
Positive (+) connect with the positive BATT2+ of the battery pack 202, the cathode point of the power input of the power supply monitor 2031
It is not connect with the anode of the anode of the third diode D3 and the 4th diode D4；The cathode of the third diode D3
It is connect with the cathode (-) of the output end of the rectifier 201；The cathode of the 4th diode D4 and the battery pack 202
Cathode BATT2- connection.In the present embodiment, the power supply monitor 2031 for electric connection mode so that the power supply monitor
2031 work always, and after the lower electricity of the even described battery 202, the power supply of the power supply monitor 2031 is still by the battery pack
202 supplies (i.e. power supply monitor 2031 does not power off after the lower electricity of battery pack 202), if not matching battery, the Power Supply Monitoring
Device 2031 can obtain power supply from BUS2- in figure.In the present embodiment, the power supply monitor 2031 for electric connection mode,
After the lower electricity of the battery pack 202, if the power supply monitor 2031 detects that AC power source restores normal, the power supply prison
Controlling device 2031 can be by controlling the power supply to the line packet of the normally closed relay K21, and then controls the open type direct current contact
The current supply circuit of the line packet of device KM21 is connected to, so that the battery pack 202 powers on.
Electric circuit is when being debugged under the present embodiment battery, is installed without (or the exchange of the rectifier 201
Power supply is without alternating current), the lower electric actuator part (the i.e. described open type D.C. contactor KM21) of the battery pack 202 can be by this time
It is in an off state at BUS2- without electricity in figure, the power supply monitor 2031 also unpowered, at this point, operator can be by
The line packet of the first key S21 once, the open type D.C. contactor KM21 (are become by off-state for powering on and acting
For closed state) so that BUS2- is connected to BATT2- in figure, the power supply of the power supply monitor 2031 also restores, meanwhile, institute
State battery pack 202 can also to load RL2 power supply, the line packet of the open type D.C. contactor KM21 have at BUS- it is electric due to protect
Power supply is held, electric circuit is in the stable state that battery powers under the present embodiment battery at this time.
Under battery shown in complex chart 1 under battery shown in the first embodiment of electric circuit and Fig. 2 electric circuit second embodiment,
Open type D.C. contactor as electric actuator part under battery and can be ideally to reliably applied to DC uninterrupted by the present invention
Under battery in powersupply system in electric circuit.The present invention gives two kinds of application scenarios, and one is power supplys after electricity under battery
Monitor power-off (corresponding embodiment illustrated in fig. 1), another kind is that power supply monitor does not power off (shown in corresponding diagram 2 after electricity under battery
Embodiment).
In addition, the open type D.C. contactor KM21 under the present embodiment battery in electric circuit equally can by open type after
Electric appliance replaces.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. electric circuit under a kind of battery, electric circuit is to contain the DC uninterrupted power supply system for having battery pack under the battery
System, which is characterized in that electric circuit includes rectifier, battery pack, open type D.C. contactor, control circuit and bears under the battery
It carries；Wherein,
The rectifier, for providing main electricity for the load；
The battery pack, for providing backup power supply for the load；
The open type D.C. contactor, for when the rectifier do not work without output when, and work as the battery pack voltage
When lower than preset voltage, lower electric control function is executed to the battery pack, cuts off power supply of the battery pack to the load,
To protect the battery pack；
The control circuit executes the lower electric control function for controlling the open type D.C. contactor；
The first end of the load is connect with the anode of the output end of the rectifier, the second end of the load and the rectification
The cathode of the output end of device connects；The battery pack anode respectively with the positive and described load of the output end of the rectifier
First end connection, the cathode of the battery pack connect with the first end of the normally opened contact of the open type D.C. contactor, institute
State the second end of the normally opened contact of open type D.C. contactor respectively with the cathode of the output end of the rectifier and the load
Second end connection；The line packet of the open type D.C. contactor is connect with the control circuit；The open type direct current contact
The power supply of the line packet of device is controlled by the control circuit；
The control circuit includes first diode, the second diode, the first key, is used for the open type D.C. contactor
Line packet the closed type relay that is controlled of power supply state and for the rectifier working condition and the electricity
The power supply monitor that the voltage of pond group is monitored；Wherein,
The cathode of the first diode is connect with the cathode of the output end of the rectifier, the anode of the first diode with
The first end of the line packet of the open type D.C. contactor connects；
The cathode of second diode is connect through first key with the cathode of the battery pack, second diode
Anode is connect with the first end of the line packet of the open type D.C. contactor；
The first end of the normally-closed contact of the second end of the line packet of the open type D.C. contactor and the closed type relay connects
It connects, the second end of the normally-closed contact of the closed type relay is connect with the anode of the battery pack, the closed type relay
The anode of first end and the lower electric control output end of the power supply monitor of line packet connect, the line of the closed type relay
The second end of packet is connect with the cathode of the lower electric control output end of the power supply monitor；The power input of the power supply monitor
The anode at end is connect with the anode of the battery pack, the cathode of the power input of the power supply monitor and the rectifier
Cathode connection.
2. electric circuit under battery as described in claim 1, which is characterized in that the control circuit is specifically used for:
When the rectifier does not work without output, and when the voltage of the battery pack is lower than preset voltage, the control
Power supply of the circuitry cuts to the line packet of the open type D.C. contactor, controls the normally opened contact of the open type D.C. contactor
It is in an off state, it is electric under the battery pack to control.
3. electric circuit under battery as claimed in claim 2, which is characterized in that the control circuit is also used to:
When the battery pack is in power-down state, and when the rectifier resumes work and has output, the control circuit
The power supply to the line packet of the open type D.C. contactor is connected, the normally opened contact for controlling the open type D.C. contactor closes
It closes, is powered on controlling the battery pack.
4. electric circuit under battery as claimed in claim 3, which is characterized in that the second end of the load and the rectifier
Between the cathode of output end and the first end of the normally opened contact of the cathode of the battery pack and the open type D.C. contactor
Between be also connected with overcurrent protector, the overcurrent protector is fuse, fuse or air switch.
5. electric circuit under battery as described in claim 1, which is characterized in that the open type D.C. contactor can be by open type
Relay replaces.
6. electric circuit under battery as described in claim 1, which is characterized in that the rectifier can be replaced by DC/DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260966.3A CN106300462B (en) | 2015-05-20 | 2015-05-20 | Electric circuit under battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260966.3A CN106300462B (en) | 2015-05-20 | 2015-05-20 | Electric circuit under battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106300462A CN106300462A (en) | 2017-01-04 |
| CN106300462B true CN106300462B (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510260966.3A Active CN106300462B (en) | 2015-05-20 | 2015-05-20 | Electric circuit under battery |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061867A (en) * | 2017-12-29 | 2018-05-22 | 武汉祺誉星科技有限公司 | The adjusting, measuring method of integrated drive generator monitoring unit |
| CN110829405B (en) * | 2018-08-14 | 2021-11-16 | 维谛技术有限公司 | Reverse connection prevention protection circuit and communication power supply equipment |
| CN109119974A (en) * | 2018-09-27 | 2019-01-01 | 东莞市广荣电子制品有限公司 | A kind of circuit of the static leakage current of reduction for EPS power supply |
| CN113511108A (en) * | 2020-04-09 | 2021-10-19 | 宁德时代新能源科技股份有限公司 | Control circuit, method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342617C (en) * | 2003-11-21 | 2007-10-10 | 华为技术有限公司 | Power supply system and its control method |
| CN204290392U (en) * | 2014-12-03 | 2015-04-22 | 深圳市金威源科技股份有限公司 | Reset control circuit under a kind of battery |
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