CN107946678A - A kind of double relay lithium battery administrative protection device - Google Patents
A kind of double relay lithium battery administrative protection device Download PDFInfo
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- CN107946678A CN107946678A CN201711433887.3A CN201711433887A CN107946678A CN 107946678 A CN107946678 A CN 107946678A CN 201711433887 A CN201711433887 A CN 201711433887A CN 107946678 A CN107946678 A CN 107946678A
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- Prior art keywords
- relay
- armature
- lithium battery
- coil
- contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of double relay lithium battery administrative protection device, including observation circuit, control circuit, relay is overcharged, crosses and puts relay, charging diode and discharge diode；Overcharge relay and put relay excessively and be connected in the charge-discharge circuit of lithium battery group, observation circuit is used for the voltage for monitoring every battery core in lithium battery group, and one end of control circuit is connected with observation circuit, and the other end is connected with overcharging relay and putting relay excessively respectively；With overcharging that relay is in parallel, the positive and negative anodes of discharge diode are connected discharge diode with the anode and cathode of charge-discharge circuit respectively；Charging diode puts that relay is in parallel with crossing, and the positive and negative anodes of charging diode are connected with the cathode and anode of charge-discharge circuit respectively.The present invention lithium battery can be provided it is effective overcharge and Cross prevention is, it can be achieved that the free connection in series-parallel of lithium battery, retains discharging function when overcharging protection, retain charge function in Cross prevention, especially suitable in power battery and energy storage station.
Description
Technical field
A kind of li-ion cell protection technical field of the present invention, and in particular to double relay lithium battery administrative protection device.
Background technology
Power lithium-ion battery is applied among various equipment more and more widely, including automobile, UPS, power energy storage, open country
Outer electricity consumption.It is big with capacity, it is small the advantages of, be current battery market mainstream.Since lithium battery is by several battery cores
It is in series, is limited by its physical characteristic, each battery core can not accomplishes completely the same in discharge and recharge, therefore easily occur one
The problem of causing sexual deviation, this just very likely causes lithium battery when in use, its internal some or certain several battery core occurred
Fill or cross situation about putting.
And overcharge and cross and put, it is two major safety risks in lithium ion battery applications.Lithium battery, which overcharges, can cause just
The change of pole material structure, causes capacitance loss, and oxygen and electrolyte are put in its decomposition that violent chemical reaction can occur, and battery is violent
Heating, the worst result is exactly to explode naturally.Lithium battery, which is crossed, to be put and may be particularly to the consequence of bringing on a disaster property of battery
High current, which is crossed, puts, or crosses battery influence bigger of being rivals in a contest repeatedly.In general, overdischarge can raise inner pressure of battery, positive and negative anodes are lived
Property material invertibity destroyed, even if charging also can only partly recover, capacity also has obvious decay.Therefore, lithium battery must
Palpus one protective device that can be overcharged with Cross prevention of solar obligation, this is also the major technique of dynamic lithium battery application
One of difficult point.
In semiconductor switch such as the application fields such as mobile phone, small-sized electric tool, generally uses MOSFETs, IGBT as lithium
The super-charge super-discharge protective device of battery.When the voltage of lithium battery reaches overcharged voltage or is down to overdischarge pressure, MOSFETs,
The semiconductor switch such as IGBT cut off the charging and discharging circuit of battery immediately, and battery stops discharge and recharge, to be guaranteed that the safety of battery is transported
OK.Although the semiconductor switch such as MOSFETs, IGBT have application flexible, the advantages that being swift in motion, current MOSFETs,
The semiconductor devices such as IGBT are there are short life, stability is poor, antijamming capability is weak, resistance to rush of current ability is weak, anti-high voltage surge
The problems such as ability is weak, self-heating is serious, therefore can not realize free connection in series-parallel, Jin Erye using the lithium battery of semiconductor switch
It can not be applied to such as electric automobile, in super energy bag, even power energy storage station, traditional way is to manage battery concentratedly
Control causes of high cost under a large-scale relay, and heat management difficulty is high, and the standardization for seriously limiting lithium battery pushes away
Extensively.
Also occur some lithium battery physical protection devices for carrying equalization function on the market at present.Though these physical protection devices
Semiconductor switch is so significantly better than in performance, possesses the features such as high pressure resistant, antisurge, it is possible to achieve lithium battery is freely gone here and there
Parallel connection, is very suitable for dynamic lithium battery.As soon as but there was only a trigger switch since the inside of this kind of physical protection device uses, this
Mean that then the charge-discharge circuit of whole group lithium battery will be all off, lithium battery group once the physical protection device is triggered
It is charged and discharged function all to lose, user can only wait the balancing energy device in physical protection device to carry out energy to lithium battery
Equilibrium, and manual intervention can not be carried out, this allows for power battery or power energy storage station can not recover to use as early as possible.
The content of the invention
For defect present in existing lithium battery management and guard method, the present invention provides a kind of double relay lithium battery
Administrative protection device, lithium battery can be provided it is effective overcharge and Cross prevention, to realize the free connection in series-parallel of lithium battery, and most
It is applied to eventually in power battery even power energy storage station.
To reach above-mentioned technical purpose and effect, the present invention is achieved through the following technical solutions：
A kind of double relay lithium battery administrative protection device, by observation circuit, control circuit, overcharge relay, cross put relay,
Charging diode and discharge diode composition；It is described to overcharge relay and the mistake puts the charge and discharge that relay is connected on lithium battery group
In circuit, the observation circuit is connected across the positive and negative end of each battery core of the lithium battery group, the control circuit
One end be connected with the observation circuit, the other end of the control circuit respectively with it is described overcharge relay and the mistake put after
Electric appliance connects；The discharge diode is connected in parallel in the charge-discharge circuit with the relay that overcharges, the discharge diode
Cathode be connected with the anode of the charge-discharge circuit, the cathode of the anode of the discharge diode and the charge-discharge circuit connects
Connect；The charging diode is put relay with the mistake and is connected in parallel in the charge-discharge circuit, the cathode of the charging diode
It is connected with the cathode of the charge-discharge circuit, the anode of the discharge diode is connected with the anode of the charge-discharge circuit.
Preferably, patent " a kind of energy content of battery equilibrium relay for overcharging relay and using the present inventor's earlier application
Device（The patent No.：201521091374.5）", the energy content of battery equilibrium relay includes a shell for carrying heat sink, institute
The side that heat sink is located at the shell is stated, the bottom of the shell is provided with bottom case, and the enclosure is provided with one
A electromagnet, spring, spring base, armature, armature contact, normally-closed contact, normally opened contact, the first pin and second pin, institute
Armature contact, the normally-closed contact, the normally opened contact, first pin and the second pin is stated from the bottom case to reveal
Go out；
The electromagnet is made of insulation tube, coil and iron core, and the iron core is arranged on the inside of the insulation tube, the insulation
The outer surface of pipe is wound with one or more layers coil, and the material of the coil is the constantan wire through high temperature lacquer coating,
One end of the coil is connected with first pin, and the other end of the coil is connected with the second pin, and described first
Pin and the second pin are connected with the control circuit respectively；The electromagnet is attached to the medial surface of the heat sink,
The spring base is located at the side of the electromagnet, and the lower end of the spring is fixed on the spring base, and the armature is located at
The top of the electromagnet and the spring base, the rear end of the armature are connected with the upper end of the spring, the armature
Front end is provided with the armature contact, the head of the armature contact between the normally-closed contact and the normally opened contact,
The head of the armature contact is contacted by the pulling force effect of the spring with the normally-closed contact.
Further, the enclosure interior that the shell is surrounded with the bottom case is vacuum environment.
Further, heat-conducting silicone grease is scribbled between the coil and the heat sink.
Preferably, it is described to overcharge a kind of patent " taking off using microswitch of the relay using the present inventor's earlier application
Bridge-type magnetic latching relay（The patent No.：201621398568.4）", the de- bridge-type magnetic latching relay includes a case,
Be provided with the case the first armature, the second armature, double-coil electromagnet, I-shaped magnet steel, the first magnet, the second magnet and
Bidirectional final switchs；
The lower end of first armature is exposed to outside the case, and the upper end of first armature is provided with stationary contact；Described
The lower end of two armature is exposed to outside the case, and the upper end of second armature is provided with one piece of armature shrapnel；The armature bullet
Movable contact is provided with the middle part of piece, the movable contact is corresponding with the stationary contact, and the lower end of the armature shrapnel is provided with one
Root connecting rod normal thereto；A magnet steel fixed seat is hinged with the middle part of the connecting rod, the I-shaped magnet steel is arranged on described
In magnet steel fixed seat, first magnet and second magnet left and right sides below the I-shaped magnet steel respectively；
The double-coil electromagnet is located at the top of the I-shaped magnet steel, and the double-coil electromagnet is led including a bar shaped
Body, the left and right ends of the strip conductor are wound with the first magnet exciting coil and the second magnet exciting coil respectively；First excitation wire
Circle and one end of second magnet exciting coil are drawn from the case respectively, and are connected with the control circuit, and described the
The other end of one magnet exciting coil and second magnet exciting coil switched respectively with the bidirectional final in the first tie point and the
Two tie points connect；
The 3rd tie point, metal clips and driving lever, the fixing end of the metal clips have been further included in the bidirectional final switch
It is connected on the 3rd tie point, the movable end of the metal clips can be in first tie point and second tie point
Between swing back and forth；Conducting wire is connected with 3rd tie point, and draws from the case and is connected with the control circuit；
The fixing end of the driving lever is connected to the middle part of the metal clips, and the movable end of the driving lever is directed at the end of the connecting rod.
Further, the material of the connecting rod and the driving lever is insulating materials.
Further, one piece of trigger shrapnel is provided between the movable end of the end of the connecting rod and the driving lever.
The operation principle of the present invention is as follows：
1st, every overcharging for battery core in lithium battery group is set by control circuit and protects voltage and Cross prevention voltage, then utilized
Observation circuit measures the voltage of every battery core in lithium battery group in real time.
2nd, when lithium battery group is in charged state, all battery cores charge at the same time, if observation circuit detects any one
The voltage of battery core reach overcharge protection voltage when, provide a feedback signal to control circuit at once, control circuit controls immediately
Relay disconnection is overcharged, the charging circuit of lithium battery group disconnects at this time, and lithium battery group does not recharge；And discharge circuit is then using putting
The one-way conduction of electric diode so that lithium battery group retains discharging function, and lithium battery group can carry out energy by overcharging relay
Amount is balanced, or exports electricity by discharge circuit and carry out balancing energy；When observation circuit detects the voltage drop of the branch battery core
To after given voltage, a feedback signal is provided to control circuit, control circuit controls immediately to be overcharged electrical relay and answer at once
The charging circuit conducting of position, at this time lithium battery group, lithium battery group recover charge function.
Overcharge relay and both use energy content of battery equilibrium relay, armature contact is contacted with normally-closed contact to be belonged to relay and lead
Logical state, armature contact is contacted with normally opened contact belongs to relay off-state.
When the voltage of any one battery core of the volume that observation circuit is detected in lithium battery group overcharges protection voltage, control
Coil in the electricity Persistent Excitation energy content of battery equilibrium relay that circuit processed passes through lithium battery group discharges；Coil midstream mistake
Electric current cause electromagnet to produce galvanomagnetic-effect, armature overcomes the elastic force of spring and then is drawn under the action of electromagnetic attracting force
Iron core；Then armature drives armature contact to be closed with normally opened contact, lithium battery group is disconnected with charging circuit, and lithium battery group stops
Charging；Due to the lasting energization of coil, lithium battery group, which exceeds to overcharge, protects the electric energy of voltage to be largely converted into electromagnetism
Magnetic energy caused by iron, fraction are converted into thermal energy caused by coil, and magnetic energy can continue armature being drawn to iron core, keep charging
Circuit off-state, and thermal energy can then be shed by heat sink, the energy in such lithium battery group is just able to equilibrium；
After observation circuit detects that the voltage of battery core drops to given voltage, control circuit disconnects the power supply of coil, electromagnet
Galvanomagnetic-effect disappear, its suction to armature also disappears therewith, and armature returns to initial position under the reaction force of spring,
Armature contact is closed with normally-closed contact, the battery is connected with battery charger, lithium battery group can continue to charge.
When lithium battery group is in discharge condition, as electricity constantly discharges, the voltage of every battery core is gradually reduced, if prison
When slowdown monitoring circuit detects that the voltage of any one battery core drops to Cross prevention voltage, a feedback is provided to control circuit at once
Signal, control circuit controlled immediately puts relay disconnection, and the discharge circuit of lithium battery group disconnects at this time, and lithium battery group is no longer put
Electricity；And charging circuit then utilizes the one-way conduction of charging diode so that lithium battery group retains charge function, and lithium battery group can
Carry out mending electricity by charging circuit；After observation circuit detects that the voltage of the branch battery core returns to given voltage, at once to
Control circuit provides a feedback signal, and control circuit controls overdischarge relay to reset immediately, the electric discharge of lithium battery group at this time
Circuit turn-on, lithium battery group recover discharging function.
Cross and put relay and cannot select energy content of battery equilibrium relay, de- bridge-type bistable magnetic can only be used to keep relay
Device, because de- bridge-type bistable magnetic latching relay only need to consume minimum electricity in switching, the stable state of guard relay is then
Realized by de- bridge, so as to ensure that there is no energy expenditure when lithium battery group carries out Cross prevention.Relay turns on shape
State is that the entirety of I-shaped magnet steel is tilted to the right, its lower right side is because magnetic force is contacted with the second magnet, its left lower and first
Magnet separates, its left upper portion is close to the left end of double-coil electromagnet, right end of its right upper portion away from double-coil electromagnet；Even
Bar is in the high order end of its direction of motion, and armature shrapnel is pushed out, and movable contact is bonded with stationary contact, the first armature and the second armature
Conducting；Meanwhile connecting rod end is separated with driving lever, metal clips is in reset state, i.e. metal clips because of its own resilient characteristic
Movable end be connected with the second tie point, the first magnet exciting coil disconnects at this time, and the second magnet exciting coil is connected, in treating work shape
State；Relay off-state is that the entirety of I-shaped magnet steel is tilted to the left, its lower right side is separated with the second magnet, its left side
Lower part is because magnetic force is contacted with the first magnet, and left end of its left upper portion away from double-coil electromagnet, its right upper portion is close to two-wire
Enclose the right end of electromagnet；Connecting rod is in the low order end of its direction of motion, and armature shrapnel is moved and touched because its own resilient characteristic is reset
Point is separated with stationary contact, and the first armature and the second armature disconnect；Meanwhile connecting rod end is contacted and pressed with driving lever, metal clips
In the state that is pushed out, i.e. the movable end of metal clips is connected point contact with second, and the first magnet exciting coil is connected at this time, in treating
Working status, and the second magnet exciting coil disconnects.
When the voltage of any one battery core of the volume that observation circuit is detected in lithium battery group overcharges protection voltage, control
Circuit processed gives the second magnet exciting coil one exciting current by lithium battery group, and the right end of double-coil electromagnet produces magnetic force, inhales
The right upper portion for drawing I-shaped magnet steel is upturned, the right end of close double-coil electromagnet, and the lower right side of I-shaped magnet steel
Then separated with the second magnet, while the left upper portion of I-shaped magnet steel is to whereabouts, the left end away from double-coil electromagnet, and I-shaped
The left lower of type magnet steel is contacted with the first magnet；Then I-shaped magnet steel drives connecting rod to move right by magnet steel mounting base,
Connecting rod then pulls armature shrapnel so that movable contact is separated with stationary contact, and the first armature and the second armature disconnect so that relay
Disconnect, charging circuit disconnects；
Simultaneously, moving to right with connecting rod, the end of connecting rod withstand the driving lever of bidirectional final switch and apply pressure, driving lever after
And inwardly move and promote the movable end of metal clips to swing to the first tie point from the second tie point so that the second magnet exciting coil
Disconnect, the first magnet exciting coil is connected, and waits regime shift next time.Electricity is specified when observation circuit detects that the voltage of battery core drops to
After pressure, its operation principle is then in contrast.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention employ first mechanical switch to dynamic lithium battery carry out security protection, solve traditional thyristor without
The problems such as method bears high pressure, surge.That is, under the standardization voltage platform of traditional standard lithium battery, the present invention is formed
Independent safety prevention measure so that lithium battery can realize free connection in series-parallel.
2nd, secondly the present invention employs double relay pattern, and the charging circuit of lithium battery group and discharge circuit are separated.When
Overcharge relay because lithium battery overcharges disconnect when, due to the one-way conduction of discharge diode connected in parallel so that lithium electricity
Pond group still possesses discharging function, and lithium battery group is carried out outside balancing energy except through protective device, can also pass through the electricity that discharges
Road powering load, does not influence the use of lithium battery.Serve as putting relay when being disconnected because lithium battery is crossed and put, due to connected in parallel
Charging diode one-way conduction so that lithium electricity group still possesses charge function, user can be by carrying out lithium battery
Charging quickly solved the problems, such as to put.This allows for being more applicable for the dynamic of electric automobile using the lithium battery of this protective device
Power battery, super energy bag, or even power energy storage station.
3rd, the relay that overcharges of the invention uses energy content of battery equilibrium relay, due to the lasting energization of its Inside coil,
Therefore lithium battery group will be largely converted into magnetic energy caused by electromagnet, fraction conversion beyond the electric energy for overcharging protection voltage
For thermal energy caused by coil, magnetic energy can continue armature being drawn to iron core, keep charging circuit off-state, and thermal energy can then lead to
Cross heat sink to shed, the energy in such lithium battery group is just able to equilibrium, further speeds up the recovery of lithium battery.
4th, mistake of the invention puts relay using de- bridge-type bistable magnetic latching relay, is only needed when two stable states switch
Want the exciting current of very little, it is not necessary to persistently consume the electricity in lithium battery group, the stable state of guard relay is then by taking off bridge
Realize, so as to ensure that there is no energy expenditure when lithium battery group carries out Cross prevention.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate attached drawing describe in detail as after.
The embodiment of the present invention is shown in detail by following embodiments and its attached drawing.
Brief description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the internal structure schematic diagram of the double relay lithium battery administrative protection device of the present invention；
Fig. 2 is the internal structure schematic diagram of energy content of battery equilibrium relay of the present invention；
Fig. 3 is the front view of energy content of battery equilibrium relay of the present invention；
Fig. 4 is the bottom view of energy content of battery equilibrium relay of the present invention；
Fig. 5 is internal structure schematic diagram when de- bridge-type magnetic latching relay of the present invention is in closure state；
Fig. 6 is internal structure schematic diagram when de- bridge-type magnetic latching relay of the present invention is off.
Fig. 7 is the company of the double-coil electromagnet and bidirectional final switch of de- bridge-type magnetic latching relay of the present invention
Connect graph of a relation.
Embodiment
It is below with reference to the accompanying drawings and in conjunction with the embodiments, next that the present invention will be described in detail.
Shown in Figure 1, a kind of double relay lithium battery administrative protection device, by observation circuit 1, control circuit 2, overcharges
Relay 3, mistake are put relay 4, charging diode 5 and discharge diode 6 and are formed；It is described overcharge relay 3 and the mistake put after
Electric appliance 4 is connected in the charge-discharge circuit of lithium battery group 7, and the observation circuit 1 is connected across each electricity of the lithium battery group 7
The positive and negative end of core, one end of the control circuit 2 are connected with the observation circuit 1, the other end point of the control circuit 2
Relay 3 is not overcharged with described and the mistake is put relay 4 and is connected；The discharge diode 6 with described to overcharge relay 3 in parallel
In the charge-discharge circuit, the cathode of the discharge diode 6 is connected with the anode of the charge-discharge circuit, the electric discharge two
The anode of pole pipe 6 is connected with the cathode of the charge-discharge circuit；The charging diode 5 is put relay 4 with the mistake and is connected in parallel on
In the charge-discharge circuit, the cathode of the charging diode 5 is connected with the cathode of the charge-discharge circuit, two poles of the electric discharge
The anode of pipe 6 is connected with the anode of the charge-discharge circuit.
Preferably, referring to shown in Fig. 2-4, the mistake puts relay 4 and uses a kind of energy content of battery equilibrium relay, the electricity
Pond balancing energy relay includes a shell 111 for carrying heat sink 16, and the heat sink 16 is located at the one of the shell 111
A side, the bottom of the shell 111 are provided with bottom case 112, and the shell 111 is internally provided with electromagnet 17, a spring
19th, spring base 18, armature 110, armature contact 13, normally-closed contact 14, normally opened contact 15, the first pin 11 and second pin
12, the armature contact 13, the normally-closed contact 14, the normally opened contact 15, first pin 11 and the second pin
12 expose from the bottom case 112；Wherein described first pin 11 and the second pin 12 with respectively with the control circuit 2
Connection, the armature contact 13 and the normally-closed contact 14 are respectively connected to the cathode and anode of the charge-discharge circuit；
The electromagnet 17 is made of insulation tube 171, coil 172 and iron core 173, and the iron core 173 is arranged on the insulation tube
171 inside, the outer surface of the insulation tube 171 are wound with one or more layers coil 172, the material of the coil 172
For the constantan wire through high temperature lacquer coating, one end of the coil 172 is connected with first pin 11, the coil 172
The other end be connected with the second pin 12；The electromagnet 17 is attached to the medial surface of the heat sink 16, the spring
Seat 18 is located at the side of the electromagnet 17, and the lower end of the spring 19 is fixed on the spring base 18,110, the armature
In the top of the electromagnet 17 and the spring base 18, the rear end of the armature 110 is connected with the upper end of the spring 19,
The front end of the armature 110 is provided with the armature contact 13, and the head of the armature contact 13 is located at the normally-closed contact 14
Between the normally opened contact 15, the pulling force effect and the normally-closed contact of the head of the armature contact 13 by the spring 19
14 contacts.
Further, the enclosure interior that the shell 111 is surrounded with the bottom case 112 is vacuum environment.
Further, heat-conducting silicone grease is scribbled between the coil 172 and the heat sink 16.
Preferably, referring to shown in Fig. 5-7, the relay 3 that overcharges is protected using a kind of de- bridge-type magnetic using microswitch
Hold relay, the de- bridge-type magnetic latching relay includes a case 213, be provided with the case 213 first armature 21,
Second armature 22, double-coil electromagnet 23, I-shaped magnet steel 24, the first magnet 25, the second magnet 26 and bidirectional final switch 27；
The upper end of first armature 21 is provided with stationary contact 28, and the upper end of second armature 22 is provided with one piece of armature shrapnel
29, the lower end of the lower end of first armature 21 and second armature 22 is exposed to outside the case 213 respectively, and is connect respectively
Enter the cathode and anode of the charge-discharge circuit；The middle part of the armature shrapnel 29 is provided with movable contact 210, the movable contact
210 is corresponding with the stationary contact 28, and the lower end of the armature shrapnel 29 is provided with a connecting rod 211 normal thereto；
The middle part of the connecting rod 211 is hinged with a magnet steel fixed seat 212, and the I-shaped magnet steel 24 is arranged on the magnet steel and consolidates
In reservation 212, first magnet 25 and second magnet 26 are respectively positioned at the left and right two of the I-shaped lower section of magnet steel 24
Side；The double-coil electromagnet 23 is located at the top of the I-shaped magnet steel 24, and the double-coil electromagnet 23 includes one
Root strip conductor, the left and right ends of the strip conductor are wound with the first magnet exciting coil and the second magnet exciting coil respectively；Described
One end of one magnet exciting coil and second magnet exciting coil is drawn from the case 213 respectively, and with the control circuit 2
Connection, the other end of first magnet exciting coil and second magnet exciting coil respectively with the in bidirectional final switch 27
One tie point 271 and the second tie point 272 connect；The 3rd tie point 273, metal have been further included in the bidirectional final switch 27
Shrapnel 274 and driving lever 275, the fixing end of the metal clips 274 are connected on the 3rd tie point 273, the metal elastic
The movable end of piece 274 can swing back and forth between first tie point 271 and second tie point 272；Described 3rd connects
Conducting wire is connected with contact 273, and draws from the case 213 and is connected with the control circuit 2；The driving lever 275 is consolidated
Fixed end is connected to the middle part of the metal clips 274, and the movable end of the driving lever 275 is directed at the end of the connecting rod 211.
Further, the material of the connecting rod 211 and the driving lever 275 is insulating materials.
Further, one piece of trigger shrapnel is provided between the end of the connecting rod 211 and the movable end of the driving lever 275
214。
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
- A kind of 1. double relay lithium battery administrative protection device, it is characterised in that：By observation circuit（1）, control circuit（2）, mistake Fill relay（3）, cross put relay（4）, charging diode（5）And discharge diode（6）Composition；It is described to overcharge relay（3） Relay is put with the mistake（4）It is connected on lithium battery group（7）Charge-discharge circuit in, the observation circuit（1）It is connected across described Lithium battery group（7）Each battery core positive and negative end, the control circuit（2）One end and the observation circuit（1）Even Connect, the control circuit（2）The other end overcharge relay with described respectively（3）Relay is put with the mistake（4）Connection；It is described Discharge diode（6）Relay is overcharged with described（3）It is connected in parallel in the charge-discharge circuit, the discharge diode（6）Just Pole is connected with the anode of the charge-discharge circuit, the discharge diode（6）The cathode of anode and the charge-discharge circuit connect Connect；The charging diode（5）Relay is put with the mistake（4）It is connected in parallel in the charge-discharge circuit, the charging diode （5）Cathode be connected with the cathode of the charge-discharge circuit, the discharge diode（6）Anode and the charge-discharge circuit Anode connects.
- 2. double relay lithium battery administrative protection device according to claim 1, it is characterised in that：It is described to overcharge relay （3）For a kind of energy content of battery equilibrium relay, the energy content of battery equilibrium relay carries heat sink including one（16）It is outer Shell（111）, the heat sink（16）Positioned at the shell（111）A side, the shell（111）Bottom be provided with bottom Shell（112）, the shell（111）It is internally provided with an electromagnet（17）, spring（19）, spring base（18）, armature（110）、 Armature contact（13）, normally-closed contact（14）, normally opened contact（15）, the first pin（11）And second pin（12）, the activity Contact（13）, the normally-closed contact（14）, the normally opened contact（15）, first pin（11）With the second pin（12） From the bottom case（112）On expose；The electromagnet（17）By insulation tube（171）, coil（172）And iron core（173）Composition, the iron core（173）It is arranged on The insulation tube（171）Inside, the insulation tube（171）Outer surface be wound with one or more layers coil（172）, institute State coil（172）Material be the constantan wire through high temperature lacquer coating, the coil（172）One end and first pin （11）Connection, the coil（172）The other end and the second pin（12）Connection, first pin（11）With described Two pins（12）Respectively with the control circuit（2）Connection；The electromagnet（17）It is attached to the heat sink（16）Inner side Face, the spring base（18）Positioned at the electromagnet（17）Side, the spring（19）Lower end be fixed on the spring base （18）On, the armature（110）Positioned at the electromagnet（17）With the spring base（18）Top, the armature（110）'s Rear end and the spring（19）Upper end be connected, the armature（110）Front end be provided with the armature contact（13）, it is described Armature contact（13）Head be located at the normally-closed contact（14）With the normally opened contact（15）Between, the armature contact（13） Head by the spring（19）Pulling force effect and the normally-closed contact（14）Contact.
- 3. double relay lithium battery administrative protection device according to claim 2, it is characterised in that：The shell（111） With the bottom case（112）The enclosure interior surrounded is vacuum environment.
- 4. double relay lithium battery administrative protection device according to claim 2, it is characterised in that：The coil（172） With the heat sink（16）Between scribble heat-conducting silicone grease.
- 5. double relay lithium battery administrative protection device according to claim 1, it is characterised in that：It is described to overcharge relay （3）For a kind of de- bridge-type magnetic latching relay using microswitch, the de- bridge-type magnetic latching relay includes a case （213）, the case（213）Inside it is provided with the first armature（21）, the second armature（22）, double-coil electromagnet（23）, it is I-shaped Magnet steel（24）, the first magnet（25）, the second magnet（26）Switched with bidirectional final（27）；First armature（21）Lower end be exposed to the case（213）Outside, first armature（21）Upper end be provided with Stationary contact（28）；Second armature（22）Lower end be exposed to the case（213）Outside, second armature（22）Upper end It is provided with one piece of armature shrapnel（29）；The armature shrapnel（29）Middle part be provided with movable contact（210）, the movable contact （210）With the stationary contact（28）It is corresponding, the armature shrapnel（29）Lower end be provided with a connecting rod normal thereto （211）；The connecting rod（211）Middle part be hinged with a magnet steel fixed seat（212）, the I-shaped magnet steel（24）It is arranged on institute State magnet steel fixed seat（212）In, first magnet（25）With second magnet（26）It is located at the I-shaped magnet steel respectively （24）The left and right sides of lower section；The double-coil electromagnet（23）Positioned at the I-shaped magnet steel（24）Top, it is described Double-coil electromagnet（23）Including a strip conductor, the left and right ends of the strip conductor are wound with the first magnet exciting coil respectively With the second magnet exciting coil；One end of first magnet exciting coil and second magnet exciting coil is respectively from the case（213）In Draw, and with the control circuit（2）The other end difference of connection, first magnet exciting coil and second magnet exciting coil Switched with the bidirectional final（27）In the first tie point（271）With the second tie point（272）Connection；The bidirectional final switch（27）In further included the 3rd tie point（273）, metal clips（274）And driving lever（275）, institute State metal clips（274）Fixing end be connected to the 3rd tie point（273）On, the metal clips（274）Movable end Can be in first tie point（271）With second tie point（272）Between swing back and forth；3rd tie point（273） On be connected with conducting wire, and from the case（213）Middle extraction and the control circuit（2）Connection；The driving lever（275）Fixation End is connected to the metal clips（274）Middle part, the driving lever（275）Movable end be directed at the connecting rod（211）End.
- 6. double relay lithium battery administrative protection device according to claim 5, it is characterised in that：The connecting rod（211） With the driving lever（275）Material be insulating materials.
- 7. double relay lithium battery administrative protection device according to claim 5, it is characterised in that：The connecting rod（211） End and the driving lever（275）Movable end between be provided with one piece of trigger shrapnel（214）.
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| CN201711433887.3A CN107946678B (en) | 2017-12-26 | 2017-12-26 | A kind of double relay lithium battery administrative protection method |
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| CN201711433887.3A CN107946678B (en) | 2017-12-26 | 2017-12-26 | A kind of double relay lithium battery administrative protection method |
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| CN110854879A (en) * | 2019-11-19 | 2020-02-28 | 国网安徽省电力有限公司 | Be applied to electric wire netting frequency modulation device of photovoltaic direct current side |
| CN111524762A (en) * | 2020-04-30 | 2020-08-11 | 代勒智能电网技术(南京)有限公司 | Moulded case circuit breaker tripping structure |
| CN114977392A (en) * | 2022-05-26 | 2022-08-30 | 合肥恒钧检测技术有限公司 | Battery early warning circuit and consumer |
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| CN107946678B (en) | 2019-11-12 |
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