CN204304513U - Electric energy o controller, power output device, electric device and underwater propeller - Google Patents

Electric energy o controller, power output device, electric device and underwater propeller Download PDF

Info

Publication number
CN204304513U
CN204304513U CN201420758898.4U CN201420758898U CN204304513U CN 204304513 U CN204304513 U CN 204304513U CN 201420758898 U CN201420758898 U CN 201420758898U CN 204304513 U CN204304513 U CN 204304513U
Authority
CN
China
Prior art keywords
electric energy
circuit
controller
motor
battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420758898.4U
Other languages
Chinese (zh)
Inventor
赵海潇
犹云
杨涛
施黎明
周国明
彭泽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KUNMING WUWEI S&T INDUSTRY TRADE Co Ltd
Original Assignee
KUNMING WUWEI S&T INDUSTRY TRADE Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KUNMING WUWEI S&T INDUSTRY TRADE Co Ltd filed Critical KUNMING WUWEI S&T INDUSTRY TRADE Co Ltd
Priority to CN201420758898.4U priority Critical patent/CN204304513U/en
Application granted granted Critical
Publication of CN204304513U publication Critical patent/CN204304513U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Control Of Electric Motors In General (AREA)

Abstract

The utility model provides a kind of electric energy o controller, power output device, electric device and underwater propeller, solve electric energy o controller structure relative complex in prior art, cost of manufacture is too high, the compatibility of the motor of electric energy o controller and different size is more weak, so that the technical problem of versatility deficiency.Its structure comprises: control chip (1) and the system power supply circuit (2) be connected with control chip (1), urgency stop control circuit (3), motor-drive circuit (4), current detecting and filtering comparison circuit (5) and alignment circuit (6).The utility model electric energy o controller adopts pure hardware circuit design, and structure is simply easy to realize, and has saved hardware cost of manufacture and the debugging cost of electric energy o controller to greatest extent; In addition, the setting of the utility model motor-drive circuit, makes the compatibility of the motor of electric energy o controller and different size strengthen further, versatility is further improved.

Description

Electric energy o controller, power output device, electric device and underwater propeller
Technical field
The utility model relates to electric energy automatic control technology field, is specifically related to a kind of electric energy o controller.
Background technology
In prior art, electric energy o controller is relatively extensive in the application of propeller field, as screw propeller, and electronic ship's propeller, aero propulsion device and hydraulic propeller etc.Shown in Fig. 1, frogman's small underwater propeller of the prior art, because himself is less demanding to flying power, heavy burden, the speed of a ship or plane, thus its power acquisition powered battery, the function of the navigation that the electric energy o controller that it adopts does not need additional conventional propeller to have and location.Small underwater propeller of the prior art has: electric energy o controller structure relative complex, and cost of manufacture is too high, control circuit for the battery of different size and the compatibility of motor more weak, the technological deficiencies such as versatility is not enough.Therefore, research and develop a using battery as power supply, be applicable to low-power and export, structure is simple, and self-protection function is reliable and stable, and the electric energy o controller being easy to debug becomes a kind of required.
Utility model content
For this reason, the utility model provides a kind of electric energy o controller, and solve electric energy o controller structure relative complex in prior art, cost of manufacture is too high, the compatibility of the motor of electric energy o controller and different size is more weak, so that the technical problem of versatility deficiency.
For solving the problems of the technologies described above, the utility model provides a kind of electric energy o controller, comprising: control chip and the system power supply circuit be connected with described control chip, urgency stop control circuit, motor-drive circuit, current detecting and filtering comparison circuit and alignment circuit;
Described system power supply circuit is used for powering to described control chip;
Described urgency is stopped control circuit and is exported for the electric energy cutting off described electric energy o controller by force;
Described motor-drive circuit utilizes pwm control signal, the break-make of driving power MOS;
Described current detecting and filtering comparison circuit for detecting the current signal feeding back to described electric energy o controller, and compare with reference value after described detected value filtering, judge the electric current that exported by described electric energy o controller whether overcurrent;
Described alignment circuit regulates the electric energy of described electric energy o controller to export by potentiometer.
According to an execution mode of the present utility model, wherein, also comprise: be electrically connected with described control chip and the battery automatic switch-over circuit for expanding reserve battery that signal is connected.
According to an execution mode of the present utility model, wherein, described control chip is SG1525 series pulse width modulating chip.
According to an execution mode of the present utility model, wherein, also comprise: voltage detecting and filtering comparison circuit, and the undervoltage warning circuit be electrically connected with filtering comparison circuit with described voltage detecting;
Described voltage detecting and filtering comparison circuit for detecting input voltage signal, and compare with reference value after carrying out filtering to described input voltage signal;
Described undervoltage warning circuit is detecting that described input voltage signal is lower than the signal of telecommunication that gives the alarm during described reference value.
For solving the problems of the technologies described above, the utility model provides a kind of power output device, comprises battery and foregoing electric energy o controller; Described battery and described system power supply circuit and voltage detecting and filtering comparison circuit are electrically connected.
For solving the problems of the technologies described above, the utility model provides a kind of electric device, comprises motor and foregoing power output device; Described battery is connected with described electric electromechanics; Described motor-drive circuit and current detecting and filtering comparison circuit is connected with described electric electromechanics and signal connects.
For solving the problems of the technologies described above, the utility model provides a kind of underwater propeller, and described underwater propeller comprises foregoing electric energy o controller.
The utility model electric energy o controller adopts pure hardware circuit design, structure is simply easy to realize, hardware cost of manufacture and the debugging cost of electric energy o controller are saved to greatest extent, solve electric energy o controller structure relative complex in prior art, the technical problem that cost of manufacture is too high; In addition, the setting of the utility model motor-drive circuit, the compatibility solving the motor of electric energy o controller and different size in prior art is more weak, so that the technical problem of versatility deficiency.
Further; the utility model increases battery automatic switch-over circuit newly; solve control circuit more weak for the battery compatibility of different size; so that the technical problem of versatility deficiency; when using polylith battery in addition at the same time; when load automatic switch can be connected to another block battery lower than during protection value by the battery electric quantity in work, the expansion of many group backup batteries can be realized.
Further, the utility model provides a kind of power output device, to the battery strong adaptability of different size, can export after the electric energy regulation and control in battery with the voltage matched with loaded work piece demand and current parameters.
Further, the utility model provides a kind of electric device, effectively utilizes the electric energy that power output device exports, in addition, the utility model utilizes current detecting and filtering comparison circuit to transmit feedback signal to control chip, and the accurate control of rotating for motor provides further technical support.
The electric energy o controller of the utility model electric device is simple for structure does not need software programming, and whole debugging efforts is only limitted to the adjustment to reference voltage; Further, the power supply of control circuit adopts isolated form Width funtion DC/DC, and is isolated by optocoupler between the driving of motor and testing circuit, significantly reduces the impact of motor interference on measuring circuit; Further, electric energy o controller defencive function is more perfect than prior art, and when battery undervoltage is subject to the limitation of dump energy must take the action of next stage if reporting to the police to give warning in advance, avoid the brownout damage equipment when next stage action; Further, overcurrent, overload protection are used for motor and rotate and to be obstructed and over current of motor that stall or other reasons cause is protected timely, avoid whole electric energy o controller to be damaged; Further, the utility model electric device adopts Hall switch to produce switch as the emergent stop signal of motor, utilize the feature of its contactless work, not only can improve the useful life of electric device, the utility model electric device can also be made to be applicable to underwater operation, and during operation, this design reduces Machine Design personnel do watertight process difficulty to emergency stop switch under water.
Further, the utility model provides a kind of underwater propeller, utilize above-mentioned electric energy o controller realize described underwater propeller and small-sized frogman's vehicle have be equal to small-power, short-rangely drag the function of carrying under water.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is in prior art, frogman's small underwater propeller structure schematic diagram;
Fig. 2 is electric energy o controller structural representation in the utility model embodiment 1;
Fig. 3 is SG1525 series pulse width modulating chip external pin figure in the utility model embodiment 1;
Fig. 4 is system power supply circuit diagram in the utility model embodiment 1;
Fig. 5 is alignment circuit figure in the utility model embodiment 1;
Fig. 6 is motor-drive circuit figure in the utility model embodiment 1;
Fig. 7 is current detecting and filtering comparison circuit figure in the utility model embodiment 1;
Fig. 8 suddenly stops control circuit figure in the utility model embodiment 1;
Fig. 9 is battery automatic switch-over circuit figure in the utility model embodiment 2;
Figure 10 is voltage detecting and filtering comparison circuit and undervoltage warning circuit figure in the utility model embodiment 3;
Figure 11 is power output device structural representation in the utility model embodiment 4;
Figure 12 is electric device structural representation in the utility model embodiment 5.
Embodiment
Below in conjunction with Figure of description and embodiment, embodiment of the present utility model is described in further detail.Following examples only for illustration of the utility model, but can not be used for limiting scope of the present utility model.
Embodiment 1:
Without loss of generality, shown in Fig. 2, the utility model provides a kind of electric energy o controller, comprising: control chip 1 and the system power supply circuit 2 be connected with control chip 1, urgency stop control circuit 3, motor-drive circuit 4, current detecting and filtering comparison circuit 5 and alignment circuit 6;
System power supply circuit 2 is for powering to described control chip 1;
Suddenly stop control circuit 3 to export for the electric energy cutting off electric energy o controller by force; When electric energy o controller is for controlling motor, suddenly stop control circuit 3 for realizing emergency shutdown;
Motor-drive circuit 4 utilizes pwm control signal, the break-make of driving power MOS; When motor-drive circuit 4 is for controlling motor rotation, motor-drive circuit 4 participates in the speed regulating control of motor;
Current detecting and filtering comparison circuit 5 for detecting the current signal feeding back to described electric energy o controller, and compare with reference value after detected value filtering, judge the electric current that exported by electric energy o controller whether overcurrent; When current detecting and filtering comparison circuit 5 are for detecting the operation feedback signal from motor, current detecting and filtering comparison circuit 5 detect motor operating current, and after filtering is carried out to detected value, current reference value when normally working with the motor of setting is made comparisons, and then judges that motor is with or without over-current and-load;
Alignment circuit 6 regulates the electric energy of electric energy o controller to export by potentiometer; When alignment circuit 6 is connected with motor, for regulating the rotating speed of motor.
Wherein, control chip 1 is SG1525 series pulse width modulating chip, and its structure comprises: reference voltage V REF, oscillator G, tune difference amplifier EA, comparator DC and PWM latch, phase splitter, under voltage lock, output stage, soft start and shut-off circuit; The operating voltage range of SG1525 series pulse width modulating chip is 8 ~ 35V, and be applicable to being applied in Switching Power Supply, electric machine speed regulation and Technology of Power Conversion field, its concrete pin configuration as shown in Figure 3;
System power supply circuit 2 as shown in Figure 4, the utility model adopts isolated form DC/DCN2, cell voltage is converted into SG1525 series pulse width modulating chip and the DC15V power supply needed for operation amplifier circuit work, as the N6 (low pressure difference linear voltage regulator) of non-isolation type LD0, for generation of the reference voltage of DC12V;
As shown in Figure 5, concerning speed governing chip SG1525, its speed-regulating signal is the direct current signal of 0-5V to alignment circuit 6, the 0-50%PWM signal of corresponding output duty cycle; + 5V the reference voltage of speed governing is from the reference voltage output pin 16 of SG1525, and speed-regulating signal is provided by wire wound single turn potentiometer, enters SG1525 speed-regulating signal input after treatment; In figure, TSXH is speed-regulating signal, and GLXH is over-current signal, and JTXH is emergent stop signal;
Motor-drive circuit 4 as shown in Figure 6, SG1525 changes according to speed electric the pwm signal exported the to output to a pair coupling control signal being 0-100% to output duty cycle after pipe through optocoupler, control signal controls the ON time of power MOS pipe, thus realizes the speed regulating control to motor; Optocoupler is for realizing the electrical isolation of control circuit and power of motor circuit; For noninductive resistance R36 is current of electric sample resistance in figure, resistance is chosen according to the power W of current of electric I and selected resistance, and computing the resistor value formula is R=W/I 2; In figure, SGXH is the output pwm signal of SG1525;
As shown in Figure 7, in figure, sample rate current is a magnitude of voltage, and it comes from the current of electric that sample resistance R36 detects for current detecting and filtering comparison circuit 5.Sampled current value does one with overcurrent protection fiducial value by comparator N4B and compares after RC filtering, once after this value exceedes overcurrent protection fiducial value, N4B exports high level, and optocoupler also conducting output overcurrent signal immediately; Over-current signal is by the shutoff pin of diode access SG1525, once this signal is high level, the pwm signal blocking SG1525 immediately exports, and motor does not have power input and shut down; In figure, GLXH is over-current signal, and CYDL is sample rate current;
Suddenly stop control circuit 3 as shown in Figure 8, JT1 connects the socket that positive-negative-positive often opens three-wire type Hall switch, and Hall switch is contactless magnetic sensitive switch, long service life, and reliability is high; In figure, JTXH is emergent stop signal.
Embodiment 2:
The present embodiment is on the basis of embodiment 1, and increase and its particular circuit configurations of battery automatic switch-over circuit 7 that control chip 1 is electrically connected and signal is connected are as shown in Figure 9; The capacity of battery strictly limits the flying power of power device; the battery pack automatic switching function of battery automatic switch-over circuit, when being equipped with backup battery, once first group of resistance electricity is worth lower than protection; the automatic switchover of battery can be realized, for realizing the expansion of reserve battery.
Embodiment 3:
The present embodiment, on the basis of embodiment 2, increases voltage detecting and filtering comparison circuit 8, and the undervoltage warning circuit 9 be electrically connected with voltage detecting and filtering comparison circuit 8, and particular circuit configurations as shown in Figure 10; When voltage detecting is connected with battery with filtering comparison circuit 8, voltage detecting and filtering comparison circuit 8 for detecting cell voltage, and to carry out detected value after filtering compared with the reference value of setting detected value, monitoring battery electricity; Undervoltage warning circuit 9 is for giving the alarm signal when identifying the reference value of detected value lower than setting, and alert trigger device works; Due to the finiteness of battery capacity, need during use to detect the electricity of battery, once cell voltage is lower than setting electricity, warning be sent; Show shown in the utility model Figure 10 that circuit has very strong practicality in actual use, the adjustment of the numerical value of setting electricity has arbitrariness, be such as that when ensureing round, electric energy o controller all can normally work in distance, setting electricity can be set to 40% ~ 50% of total electricity; In Figure 10, N4A is as voltage comparator, and its input is respectively cell voltage G+ and reference voltage+12V by the independently voltage signal of the two-way after resistance pressure-dividing network dividing potential drop; In the sufficient situation of battery electric quantity, the in-phase input end voltage of voltage comparator N4A lower than reverse input end, output low level, optocoupler not conducting, and then the cut-off of NPN triode, buzzer is not sounded; When battery electric quantity is on the low side, its output voltage starts to decline, and then causes the in-phase input end voltage of N4A higher than reverse input end, and comparator exports high level, and optocoupler conducting, and then NPN triode ON, buzzer is sounded, and warning circuit is started working.
Embodiment 4:
The present embodiment, on the basis of embodiment 3, provides a kind of power output device, and its structure comprises: the electric energy o controller in battery 10 and embodiment 3; Battery 10 and system power supply circuit 2 and voltage detecting and filtering comparison circuit 8 are electrically connected; Under the effect of electric energy o controller, the electricity of battery 10 exports and has the extremely strong Modulatory character described by above-described embodiment, simultaneously when more than battery 10 exists, group is for subsequent use, electric energy o controller has the function of the automatic switchover of battery easily, realizes the use expansion of many group backup batteries.
Embodiment 5:
The present embodiment, on the basis of embodiment 4, provides a kind of electric device, and its structure comprises: the power output device in motor 11 and embodiment 4, and its structural representation as shown in figure 12; Battery 10 is electrically connected with motor 11; Motor-drive circuit 4 and current detecting and filtering comparison circuit 5 is electrically connected with described motor 11 and signal is connected.
Embodiment 6:
The present embodiment, on the basis of embodiment 5, provides a kind of underwater propeller, is provided with the electric device in embodiment 5.The utility model underwater propeller is designed by pure hardware circuit and has greatly saved hardware cost and debugging cost, and has taken into full account the adaptability of control circuit to different size battery, motor.In the present embodiment: motor 11 is the brush direct current motor of rated voltage 24VDC, power 350W; Battery 10 is the lithium ion battery of rated voltage 24V, capacity 20Ah.Can realize by the technical program the load dragging 60Kg under water, navigate by water 40 minutes with the speed of 1.6Kn, after tested, every defencive function of motor 11 is all effectively normal; Undervoltage warning circuit 9 is when battery 10 electricity is lower than set point, and by buzzer warning, prompting diver is maked a return voyage as early as possible.The utility model underwater propeller is applicable to natatorium or place, seabeach and uses as the amusement equipment of diving under water or swim, and also can transfer to military.In addition, the utility model underwater propeller is when practical operation, as need emergency be processed, only scram button need be pressed, the present embodiment adopts Hall switch to produce switch as the emergent stop signal of motor, utilize the feature of its contactless work, not only can improve the useful life of equipment, and Machine Design personnel do watertight process difficulty to emergency stop switch can be reduced.
It should be noted that; though the present embodiment only devises the circuit of expansion 1 group of backup battery; but it will be appreciated by those skilled in the art that the expansion that can realize more groups of backup batteries for strengthening flying power based on this in conjunction with common practise, all falling into protection range of the present utility model.
Further, due to the common practise as electricity field, tandem circuit: control chip 1, system power supply circuit 2, the anxious undervoltage warning circuit 9 stopping control circuit 3, motor-drive circuit 4, current detecting and filtering comparison circuit 5, alignment circuit 6, battery automatic switch-over circuit 7, voltage detecting and filtering comparison circuit 8 and be electrically connected, and the battery 10 as power supply and the motor 11 as power source are prior art; Therefore tandem circuit is only with the formal description of physical circuit figure, the structure of the battery 10 as power supply and the motor 11 as power source does not repeat them here.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection range of the present utility model.

Claims (7)

1. an electric energy o controller, it is characterized in that, comprising: control chip (1) and the system power supply circuit (2) be connected with described control chip (1), urgency stop control circuit (3), motor-drive circuit (4), current detecting and filtering comparison circuit (5) and alignment circuit (6);
Described system power supply circuit (2) is for powering to described control chip (1);
Described urgency is stopped control circuit (3) and is exported for the electric energy cutting off described electric energy o controller by force;
Described motor-drive circuit (4) utilizes pwm control signal, the break-make of driving power MOS;
Described current detecting and filtering comparison circuit (5) are for detecting the current signal feeding back to described electric energy o controller, and compare with reference value after described detected value filtering, judge the electric current that exported by described electric energy o controller whether overcurrent;
Described alignment circuit (6) regulates the electric energy of described electric energy o controller to export by potentiometer.
2. electric energy o controller according to claim 1, is characterized in that, also comprise: be electrically connected with described control chip (1) and the battery automatic switch-over circuit (7) for expanding reserve battery that signal is connected.
3. electric energy o controller according to claim 1 and 2, is characterized in that, described control chip (1) is SG1525 series pulse width modulating chip.
4. electric energy o controller according to claim 3, it is characterized in that, also comprise: voltage detecting and filtering comparison circuit (8), and the undervoltage warning circuit (9) be electrically connected with filtering comparison circuit (8) with described voltage detecting;
Described voltage detecting and filtering comparison circuit (8) for detecting input voltage signal, and compare with reference value after carrying out filtering to described input voltage signal;
Described undervoltage warning circuit (9) is detecting that described input voltage signal is lower than the signal of telecommunication that gives the alarm during described reference value.
5. a power output device, comprises battery (10), it is characterized in that, also comprises the electric energy o controller according to any one of Claims 1 to 4 item; Described battery (10) and described system power supply circuit (2) and voltage detecting and filtering comparison circuit (8) are electrically connected.
6. an electric device, comprises motor (11), it is characterized in that, also comprise power output device according to claim 5; Described battery (10) is electrically connected with described motor (11); Described motor-drive circuit (4) and current detecting and filtering comparison circuit (5) is electrically connected with described motor (11) and signal is connected.
7. a underwater propeller, is characterized in that, described underwater propeller comprises the electric energy o controller according to any one of Claims 1 to 4 item.
CN201420758898.4U 2014-12-05 2014-12-05 Electric energy o controller, power output device, electric device and underwater propeller Expired - Fee Related CN204304513U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420758898.4U CN204304513U (en) 2014-12-05 2014-12-05 Electric energy o controller, power output device, electric device and underwater propeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420758898.4U CN204304513U (en) 2014-12-05 2014-12-05 Electric energy o controller, power output device, electric device and underwater propeller

Publications (1)

Publication Number Publication Date
CN204304513U true CN204304513U (en) 2015-04-29

Family

ID=53110025

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420758898.4U Expired - Fee Related CN204304513U (en) 2014-12-05 2014-12-05 Electric energy o controller, power output device, electric device and underwater propeller

Country Status (1)

Country Link
CN (1) CN204304513U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105598504A (en) * 2016-03-02 2016-05-25 东莞辰达电器有限公司 Handheld electric drill
CN109693377A (en) * 2017-10-21 2019-04-30 严铜 A kind of 3D printer emergency stop circuit
CN110824900A (en) * 2019-11-12 2020-02-21 佛山智能装备技术研究院 Automatic switching circuit of external scram device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105598504A (en) * 2016-03-02 2016-05-25 东莞辰达电器有限公司 Handheld electric drill
CN109693377A (en) * 2017-10-21 2019-04-30 严铜 A kind of 3D printer emergency stop circuit
CN110824900A (en) * 2019-11-12 2020-02-21 佛山智能装备技术研究院 Automatic switching circuit of external scram device

Similar Documents

Publication Publication Date Title
CN102570558B (en) Intelligent charger of nickel-hydrogen nickel-cadmium battery and control method thereof
CN110098648B (en) Energy management system for ocean observation detection buoy
CN105759221A (en) Power battery group management system with internal resistance monitoring function
CN204304513U (en) Electric energy o controller, power output device, electric device and underwater propeller
CN105186575A (en) Diesel generating set parallel operation system for safety source of thermal power plant
CN102148529B (en) Control device and control method thereof for intelligently supplying power to circuit breaker control unit
CN203951251U (en) A kind of embedded device multiple feed device
CN115065135A (en) Automobile charger, charging method and medium
CN205160093U (en) Thermal power plant is diesel generating set parallel machine system for emergency power supply
CN102830365B (en) Megawatt-level wind generating set paddle changing system battery automatic testing method and system
CN201947046U (en) Switch power supply with backup battery for power supply
CN104648684B (en) Small-sized unmanned aircraft hanging device and the method lifted
CN204118813U (en) Direct-current charging post main circuit dual control electric power system
CN108832685B (en) Charging device for wind power pitch system and detection method thereof
CN104362727A (en) STM32-based mining intrinsic safety power source charger device
CN208916144U (en) Failure emergency treatment device is protected in belt slippage
CN102882452A (en) Micro-power consumption singlechip-based control device and method for high-voltage direct current motor
CN202162330U (en) Control circuit of hand riveter
CN204904053U (en) Automatic load option function module
CN202268715U (en) Charging device possessing overcharge detection protection function
CN214177196U (en) Automatic corotation mechanism of oil pump motor
CN209313470U (en) A kind of protection circuit that car emergency startup power supply is docked with automobile starting battery
CN207010341U (en) A kind of ACU voltage signals compensation device
CN203135554U (en) Power equipment monitoring device
CN206914560U (en) Electric car rate-limiting control circuit

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150429

Termination date: 20151205

EXPY Termination of patent right or utility model