CN203553912U - Electronic circuit capable of reducing caloric value of power device and high current device - Google Patents
Electronic circuit capable of reducing caloric value of power device and high current device Download PDFInfo
- Publication number
- CN203553912U CN203553912U CN201320625432.2U CN201320625432U CN203553912U CN 203553912 U CN203553912 U CN 203553912U CN 201320625432 U CN201320625432 U CN 201320625432U CN 203553912 U CN203553912 U CN 203553912U
- Authority
- CN
- China
- Prior art keywords
- power device
- relay
- electronic circuit
- caloric value
- current
- 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
Links
Images
Abstract
The utility model discloses an electronic circuit capable of reducing the caloric value of a power device and a high current device. The electronic circuit comprises a power supply, a current transmission loop connected with the power supply, and a controller, the current transmission loop is connected with the power device, two terminals of a switch channel of the power device are connected with movable contacts of a relay in parallel, and the controller outputs a switch control signal, transmits the signal to a power supply loop of a relay coil, and controls the on-off of the movable contacts of the relay. According to the electronic circuit, the power device and the relay are connected in parallel, when the high current passes through the power device, the relays with low contacting resistance undertakes the high current transmission task so that the caloric value of the power device is significantly reduced, the structure and the design of a heat radiation system are simplified, the failure rate of the power device is reduced, the service lifetime of the power device is extended, the electronic circuit can be widely applicable to the design of a system circuit of high current and high power devices, and the integral design of the system is simplified.
Description
Technical field
The utility model belongs to power electronic equipment technical field, specifically, and the large current device that relates to a kind of electronic circuitry design for reducing power device caloric value and adopt described design of electronic circuits.
Background technology
Along with the development of power electronic technology, power device is widely used in the electric equipment products with large current circuit.Power device, also claims power semiconductor, is the electronic devices and components that a kind of power output is larger, for carrying out Power Processing, has the ability of handle high voltages, large electric current, such as thyristor, MOSFET, IGBT etc.
Power semiconductor is in most of the cases used as switch and uses, for controlling current circuit conducting or shutoff.Along with the development of power semiconductor to high power density direction, cause the heat in device unit volume to increase sharply.In the equipment of high-power high-frequency application, the power consumption of power semiconductor can change heat into, tube core heating, the junction temperature of power device are raise, if effectively this thermal release is gone out not in time,, can have influence on the service behaviour of device, thereby the reliability that reduces system works, even causes the damage of whole system.Therefore,, in using the high-power electric appliance product of power device design, need to, for power device specialized designs heat abstractor, with the heat that power device is produced, effectively distribute, to obtain high reliability.
At present, solving the most frequently used method of power device heat dissipation problem is that power device is arranged on radiator, by heating panel by heat radiation in ambient air, by free convection, carry out distribute heat.This radiating mode, because needs are set up heat abstractor in electric equipment products, therefore can cause the overall volume of product to increase, and the structural design relative complex of cooling system.
Summary of the invention
The utility model, in order to solve the problem that power device caloric value is large, has proposed a kind of electronic circuit that can effectively reduce power device caloric value, to reduce the failure rate of power device.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
Reduce an electronic circuit for power device caloric value, comprise power supply, connect current delivery loop and the controller of described power supply; In described current delivery loop, be connected with power device, at the two ends of the switch ways of described power device, be parallel with the armature contact of relay, described controller output switch control signal transfers in the current supply circuit of relay coil, the armature contact break-make of control relay.
Further, the switch ways of described power device is connected in the supply line that connects positive source in current delivery loop, or connects in the supply line of power cathode.
For the on off operating mode to described relay is reasonably controlled, in described current delivery loop, be also connected with current sampling circuit, gather the size of current in current delivery loop and transfer to described controller, the electric current of described controller in loop being detected hour, the armature contact of control relay disconnects, and electric current transmits by power device; And electric current in loop being detected when larger when controller, the armature contact of output switch control signal control relay is closed, makes the electric current can be by the armature contact minute flow transmission of power device and relay, to reduce the caloric value of power device.
When described current delivery loop is to be connected to power supply and during with supply current loop between electric loading, described power device can adopt single metal-oxide-semiconductor or single IGBT module to be connected in supply current loop, and break-make control is carried out in supply current loop.When selecting single metal-oxide-semiconductor as power device, the armature contact of described relay is connected in parallel between the source electrode and drain electrode of metal-oxide-semiconductor; When selecting single IGBT module as power device, the armature contact of described relay is connected in parallel between the collector electrode and emitter of IGBT module.
When the power supply of described power supply for exporting by solar panel, when described current delivery loop is the charging current loop being connected between solar panel and storage battery, electric current for fear of storage battery output oppositely recharges to solar panel, described power device preferably adopts the metal-oxide-semiconductor differential concatenation of two same models in described charging current loop, the armature contact of described relay is connected in parallel on to the two ends of the series arm forming after two metal-oxide-semiconductor differential concatenations.
Further, two described metal-oxide-semiconductors are the N-channel MOS pipe that is built-in with parasitic diode, the source electrode of two metal-oxide-semiconductors is linked together, wherein the drain electrode of a metal-oxide-semiconductor connects positive pole or the negative pole of solar panel, the drain electrode of an other metal-oxide-semiconductor connects positive pole or the negative pole of storage battery, and the armature contact of described relay is connected in parallel between the drain electrode of two metal-oxide-semiconductors.
Certainly, when the power supply of described power supply for exporting by solar panel, when described current delivery loop is the charging current loop being connected between solar panel and storage battery, described power device also can adopt the IGBT module differential concatenation of two same models in described charging current loop, now, the armature contact of described relay can be connected in parallel on to the two ends of the series arm forming after two IGBT module differential concatenations.
Further, the collector electrode of described two IGBT modules is linked together, wherein the emitter of an IGBT module connects positive pole or the negative pole of solar panel, the emitter of an other IGBT module connects positive pole or the negative pole of storage battery, and the armature contact of described relay is connected in parallel between the emitter of two IGBT modules.
Electronic circuit based on above-mentioned reduction power device caloric value, the utility model has also proposed a kind of large current device that adopts described design of electronic circuits, comprises power supply, connects current delivery loop and the controller of described power supply; In described current delivery loop, be connected with power device, at the two ends of the switch ways of described power device, be parallel with the armature contact of relay, described controller output switch control signal transfers in the current supply circuit of relay coil, the armature contact break-make of control relay.
Compared with prior art, advantage of the present utility model and good effect are: the utility model adopts the power device mode in parallel with relay, when electric current is by power device greatly, adopt the transformation task of the large electric current of relay shared with little contact resistance, significantly reduced thus the caloric value of power device, simplified the structural design of cooling system, reduced the failure rate of power device, extended the useful life of power device, can be widely used in large electric current, in the circuit system design of high-power device, to improve system reliability of operation, the global design of simplification system.
Read by reference to the accompanying drawings after the detailed description of the utility model execution mode, other features of the present utility model and advantage will become clearer.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the electronic circuit of the reduction power device caloric value that proposes of the utility model;
Fig. 2 is the circuit theory diagrams of the second embodiment of the electronic circuit of the reduction power device caloric value that proposes of the utility model;
Fig. 3 is the circuit theory diagrams of the third embodiment of the electronic circuit of the reduction power device caloric value that proposes of the utility model;
Fig. 4 is the circuit theory diagrams of the 4th kind of embodiment of the electronic circuit of the reduction power device caloric value that proposes of the utility model;
Fig. 5 is the circuit theory diagrams of the 5th kind of embodiment of the electronic circuit of the reduction power device caloric value that proposes of the utility model;
Fig. 6 is the circuit theory diagrams of the 6th kind of embodiment of the electronic circuit of the reduction power device caloric value that proposes of the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
The large problem of caloric value when the utility model is worked in large current circuit in order to solve power device, the design that a kind of magnitude of current that flows through power device by minimizing reduces power device caloric value has been proposed, by adopting the mode in the parallel connection of the two ends of power device with the relay of little contact resistance, utilize relay to shunt the electric current in current delivery loop, thereby when meeting large current delivery requirement, reached the purpose of design that reduces power device caloric value.
Specifically, wherein road armature contact that can selective relay is connected in parallel on the two ends of the switch ways of power device, described power device is connected in current delivery loop, by power ratio control break-over of device or cut-off, to realize the connection in current delivery loop or cutting-off controlling.For the electric current to the current delivery loop of flowing through is realized shunting, utilizing controller to produce switch controlling signal transfers in the current supply circuit of relay coil, by the coil of relay is carried out to control system of switching on or off electricity, make the described armature contact of relay closed, thereby coordinate the task of power device shared current delivery.Because the electric current of the power device of flowing through significantly reduces, thereby its caloric value just can be effectively controlled.
When closed armature contact for relay is, and the present embodiment adopts and connect current sampling circuit in current delivery loop, by the total current in current sampling circuit acquisition circuit, and transfers to described controller.Controller determines it is generate the switch controlling signal of high level or generate low level switch controlling signal according to the total current receiving, and then by the coil of relay is carried out to control system of switching on or off electricity, to reach the purpose of design of controlling its armature contact conducting or disconnection.
Specifically, when controller detects total current in current delivery loop hour, armature contact that can control relay disconnects, and only utilizes power device to transmit the total current in loop.When controller detects total current in current delivery loop and raises and reach setting threshold, the armature contact of control relay is closed, the transformation task that coordinates power device shared total current, to reduce the size of current that flows through power device, and then reduce the caloric value of power device, reduce the power loss of system.
Below by two specific embodiments, the specific design scheme that the utility model is proposed is explained in detail.
Embodiment mono-, and the present embodiment be take described current delivery loop as being connected to power supply and being specifically described as example with the supply current loop between electric loading, shown in Fig. 1, Fig. 2.
Fig. 1 is negative system altogether, and A, B end is respectively used to connect positive pole and the negative pole of power supply, and C, D end is respectively used to connect positive pole and the negative pole by electric loading, is connected to A, the B end current delivery loop between holding with C, D and is supply current loop.In described supply current loop, connect power device, described power device can select single metal-oxide-semiconductor or single IGBT module to be connected in supply current loop, for break-make control is carried out in supply current loop.
Single the P channel MOS tube Q1 of take describes as example, shown in Figure 1, and the source electrode of P channel MOS tube Q1 is connected to A end, the i.e. positive pole of power supply; Drain electrode connects C end, uses the positive pole of electric loading; Controller in the grid jockey of P channel MOS tube Q1, receives the triggering signal of controller output, and at needs, during to electricity consumption load supplying, the effective triggering signal of output low level, controls P channel MOS tube Q1 saturation conduction, to be communicated with supply current loop.
The armature contact of relay K 1 in parallel between the source electrode of P channel MOS tube Q1 and drain electrode, the normally-closed contact of take describes as example.Utilize the coil break-make of the switch controlling signal control relay K1 of controller output, when the effective switch controlling signal of controller output low level is when (being different from the triggering signal of controlling metal-oxide-semiconductor Q1 break-make), make the coil blackout of relay K 1, normally-closed contact is closed, thereby two parallel current delivery paths of formation in parallel with metal-oxide-semiconductor Q1, transmit the electric current in loop jointly.
Certainly, described P channel MOS tube Q1 also can be connected in the supply line being connected with the negative pole (being B end) of power supply with relay K 1 switching branches forming in parallel, shown in Figure 2, forms positive system altogether.Now, the source electrode of P channel MOS tube Q1 need to be connected to D end, use the negative pole of electric loading, drain electrode connects B end, and the negative pole of power supply, in guaranteeing that electric current is during P channel MOS tube Q1 conducting, can flow to B end exactly from D end.
For the armature contact of relay K 1, be connected in parallel on equally between the source electrode and drain electrode of P channel MOS tube Q1, jointly to transmit the electric current in loop.
Certainly, described power device also can select N-channel MOS pipe or IGBT module to carry out circuit design, when selecting IGBT module to carry out circuit design, the armature contact of described relay should be connected in parallel between the collector electrode and emitter of IGBT module, with common loaded current, flows through.
Embodiment bis-, and the present embodiment be take described current delivery loop and is specifically described as example as being connected to charging current loop between solar panel and storage battery, shown in Fig. 3-Fig. 6.
Fig. 3 is for being total to negative system, A, B end is respectively used to connect positive pole and the negative pole of solar panel, C, D end is respectively used to connect positive pole and the negative pole of storage battery, be connected to A, the B end current delivery loop between holding with C, D and be charging current loop, for solar panel to charge in batteries.
Consider in the situation that there is no sunlight, the voltage of solar panel one side is lower than battery tension, for fear of storage battery to solar panel reverse charging, the power device of the present embodiment two differential concatenations of decision design in described charging current loop.Two N-channel MOS pipe Q2, the Q3 that are built-in with parasitic diode of take describe as example, shown in Figure 3.
Two N-channel MOS pipe Q2, Q3 source electrodes are linked together, and the drain electrode of N-channel MOS pipe Q2 connects A end, the i.e. positive pole of solar panel; The drain electrode of N-channel MOS pipe Q3 connects C end, it is the positive pole of storage battery, the grid of two N-channel MOS pipe Q2, Q3 connects respectively controller, receive the triggering signal of controller output, when needs charge to storage battery, by controller, export the effective triggering signal of high level, control two N-channel MOS pipe Q2, Q3 saturation conduction, to be communicated with charging current loop, realize the charging of solar panel to storage battery.
The armature contact of relay K 2 is connected in parallel between two drain electrodes of two N-channel MOS pipe Q2, Q3, as shown in Figure 3, the normally opened contact of take describes as example.The switch controlling signal of controller output is transferred to the coil of relay K 2, the coil break-make of control relay K2.When the effective switch controlling signal of controller output high level, make the coil electricity of relay K 2, normally opened contact is closed, thus the charging current in loop is transmitted in the current delivery path parallel with two of two metal-oxide-semiconductor Q2, Q3 formation in parallel jointly.
Certainly, described two metal-oxide-semiconductor Q2, Q3 also can be connected in the charging circuit being connected with the negative pole (being B end) of solar panel with relay K 2 switching branches forming in parallel, shown in Figure 4, form positive system altogether.By adopting the mode of two metal-oxide-semiconductor Q2, Q3 differential concatenation to be connected in charging current loop, thereby when guaranteeing the correct flow direction of charging current, when solar panel does not have power supply output, only need to control described metal-oxide-semiconductor Q2, Q3 cut-off, and utilize the reverse cut-off characteristics of parasitic diode in metal-oxide-semiconductor Q3, just can guarantee the electric current exported by storage battery can reverse reflux in solar panel, avoid storage battery that the situation of improper electric discharge occurs.
Certainly, described power device also can select two to be built-in with the mode being connected in described charging current loop after the P channel MOS tube of parasitic diode or the IGBT module differential concatenation of two same models and to design realization.When selecting two P channel MOS tubes to carry out circuit design, the drain electrode of two P channel MOS tubes should be linked together, wherein the source electrode of a P channel MOS tube connects positive pole or the negative pole of solar panel, the source electrode of an other P channel MOS tube connects positive pole or the negative pole of storage battery, and the armature contact of described relay K 2 is connected in parallel between the source electrode of two P channel MOS tubes, jointly to carry charging current, by solar panel, flow to storage battery.
When selecting IGBT module Q4, the Q5 of two same models to carry out circuit design, the collector electrode of two IGBT module Q4, Q5 is linked together, shown in Fig. 5, Fig. 6, wherein the emitter of an IGBT module Q4 connects positive pole or the negative pole of solar panel, the emitter of an other IGBT module Q5 connects positive pole or the negative pole of storage battery, forms thus negative system (as shown in Figure 5) or altogether positive system (as shown in Figure 6) altogether.No matter adopt which kind of design, the armature contact of relay K 3 can be connected in parallel between two emitters of two IGBT module Q4, Q5, to form the parallel branch of current delivery.
Certainly, the armature contact of described relay can select the normally opened contact of relay, also can select the normally-closed contact of relay, only need to guarantee when the total current of this armature contact in current delivery loop is larger closed, in hour disconnection of total current, can meet design requirement, the present embodiment does not specifically limit this.
The present embodiment has the relay of little contact resistance by the two ends parallel connection at power device; to assist power device, share the one part of current in loop; thereby when meeting large current delivery requirement; reduced the magnitude of current that flows through power device; reduced thus the caloric value of power device; the design of system radiator can be simplified, be adapted at applying in the large current devices such as photovoltaic system.
Certainly; the above is only a kind of preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1. an electronic circuit that reduces power device caloric value, comprise power supply, connect current delivery loop and the controller of described power supply, in described current delivery loop, be connected with power device, it is characterized in that: the armature contact that is parallel with relay at the two ends of the switch ways of described power device, described controller output switch control signal transfers in the current supply circuit of relay coil, the armature contact break-make of control relay.
2. the electronic circuit of reduction power device caloric value according to claim 1, is characterized in that: the switch ways of described power device is connected in the supply line that connects positive source in current delivery loop, or connects in the supply line of power cathode.
3. the electronic circuit of reduction power device caloric value according to claim 1, is characterized in that: in described current delivery loop, be also connected with current sampling circuit, gather the size of current in current delivery loop and transfer to described controller.
4. according to the electronic circuit of the reduction power device caloric value described in any one in claims 1 to 3, it is characterized in that: described power device is single metal-oxide-semiconductor, the armature contact of described relay is connected in parallel between the source electrode and drain electrode of metal-oxide-semiconductor.
5. according to the electronic circuit of the reduction power device caloric value described in any one in claims 1 to 3, it is characterized in that: the power supply of described power supply for exporting by solar panel, described current delivery loop is the charging current loop being connected between solar panel and storage battery; Described power device is the metal-oxide-semiconductor of two same models, and two metal-oxide-semiconductor differential concatenations are in described charging current loop, and the armature contact of described relay is connected in parallel on the two ends of the series arm forming after two metal-oxide-semiconductor differential concatenations.
6. the electronic circuit of reduction power device caloric value according to claim 5, it is characterized in that: two described metal-oxide-semiconductors are the N-channel MOS pipe that is built-in with parasitic diode, the source electrode of two metal-oxide-semiconductors links together, wherein the drain electrode of a metal-oxide-semiconductor connects positive pole or the negative pole of solar panel, the drain electrode of an other metal-oxide-semiconductor connects positive pole or the negative pole of storage battery, and the armature contact of described relay is connected in parallel between the drain electrode of two metal-oxide-semiconductors.
7. according to the electronic circuit of the reduction power device caloric value described in any one in claims 1 to 3, it is characterized in that: described power device is single IGBT module, and the armature contact of described relay is connected in parallel between the collector electrode and emitter of IGBT module.
8. according to the electronic circuit of the reduction power device caloric value described in any one in claims 1 to 3, it is characterized in that: the power supply of described power supply for exporting by solar panel, described current delivery loop is the charging current loop being connected between solar panel and storage battery; Described power device is the IGBT module of two same models, and two IGBT module differential concatenations are in described charging current loop, and the armature contact of described relay is connected in parallel on the two ends of the series arm forming after two IGBT module differential concatenations.
9. the electronic circuit of reduction power device caloric value according to claim 8, it is characterized in that: the collector electrode of described two IGBT modules links together, wherein the emitter of an IGBT module connects positive pole or the negative pole of solar panel, the emitter of an other IGBT module connects positive pole or the negative pole of storage battery, and the armature contact of described relay is connected in parallel between the emitter of two IGBT modules.
10. a large current device, is characterized in that: the electronic circuit that comprises the reduction power device caloric value as described in any one claim in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625432.2U CN203553912U (en) | 2013-10-11 | 2013-10-11 | Electronic circuit capable of reducing caloric value of power device and high current device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625432.2U CN203553912U (en) | 2013-10-11 | 2013-10-11 | Electronic circuit capable of reducing caloric value of power device and high current device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553912U true CN203553912U (en) | 2014-04-16 |
Family
ID=50471981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320625432.2U Expired - Fee Related CN203553912U (en) | 2013-10-11 | 2013-10-11 | Electronic circuit capable of reducing caloric value of power device and high current device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553912U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429615A (en) * | 2016-01-08 | 2016-03-23 | 南京国电南自电网自动化有限公司 | Anti-interference loop for rapid exit of IGBT |
| CN105514949A (en) * | 2016-01-28 | 2016-04-20 | 中国科学院空间应用工程与技术中心 | Solid state power controller with latent flux prevention function and control method |
| CN106953516A (en) * | 2017-04-01 | 2017-07-14 | 西安特锐德智能充电科技有限公司 | A kind of modularization bidirectional, dc power distributing unit |
| CN107465343A (en) * | 2017-09-20 | 2017-12-12 | 重庆聚陆新能源有限公司 | A kind of two-way DC/DC converters of low conduction loss |
| CN109286326A (en) * | 2018-10-18 | 2019-01-29 | 珠海格力电器股份有限公司 | High-power frequency conversion expanded circuit, control method, device and frequency conversion drive plate |
| CN111817567A (en) * | 2020-06-13 | 2020-10-23 | 青岛鼎信通讯股份有限公司 | Winding switching device and method applied to charging module high-frequency transformer |
-
2013
- 2013-10-11 CN CN201320625432.2U patent/CN203553912U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429615A (en) * | 2016-01-08 | 2016-03-23 | 南京国电南自电网自动化有限公司 | Anti-interference loop for rapid exit of IGBT |
| CN105514949A (en) * | 2016-01-28 | 2016-04-20 | 中国科学院空间应用工程与技术中心 | Solid state power controller with latent flux prevention function and control method |
| CN106953516A (en) * | 2017-04-01 | 2017-07-14 | 西安特锐德智能充电科技有限公司 | A kind of modularization bidirectional, dc power distributing unit |
| CN106953516B (en) * | 2017-04-01 | 2024-04-19 | 西安特来电智能充电科技有限公司 | Modularized bidirectional direct current power distribution unit |
| CN107465343A (en) * | 2017-09-20 | 2017-12-12 | 重庆聚陆新能源有限公司 | A kind of two-way DC/DC converters of low conduction loss |
| CN109286326A (en) * | 2018-10-18 | 2019-01-29 | 珠海格力电器股份有限公司 | High-power frequency conversion expanded circuit, control method, device and frequency conversion drive plate |
| CN111817567A (en) * | 2020-06-13 | 2020-10-23 | 青岛鼎信通讯股份有限公司 | Winding switching device and method applied to charging module high-frequency transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203553912U (en) | Electronic circuit capable of reducing caloric value of power device and high current device | |
| CA2805797C (en) | Battery heating circuit | |
| CN104638318A (en) | Low-temperature rapid heating method and system for power battery pack for electric vehicle | |
| CN104538701B (en) | A kind of battery heating means being built in motor driven systems and structure | |
| CN106817075B (en) | A kind of photovoltaic junction box and photovoltaic system | |
| CN104868770A (en) | Control circuit of switching device | |
| CN105306030A (en) | Main power circuit for alternating current solid state power controller | |
| TWI477027B (en) | Battery heating circuit | |
| CN102412611B (en) | Constant-current charging circuit applied to linear charger | |
| CN109861189B (en) | Arc extinguishing type low-voltage direct current breaker | |
| CN103855768A (en) | Storage battery non-floating-charging hot standby technology | |
| CN104952664A (en) | Direct current high-voltage switch without arc discharge | |
| CN105025687A (en) | Low-temperature-triggered heating device for mobile electronic equipment | |
| CN105827103A (en) | Surge current preventing circuit and power supply | |
| CN209313501U (en) | A kind of double cell group parallel connection isolation circuit based on ideal diode | |
| CN203658771U (en) | Power switch control circuit, power switch element, and power switch control device | |
| CN104967154A (en) | Electric automobile charge system | |
| CN204558368U (en) | A kind of metal-oxide-semiconductor relay circuit | |
| CN203251084U (en) | Bi-directional current limiter based on bi-directional BUCK converter | |
| CN204289647U (en) | A kind of power battery of electric vehicle group low temperature automotive quick-heat system | |
| CN216597741U (en) | BMS battery pack system for heat energy utilization | |
| CN201336580Y (en) | Cell control system | |
| CN205039794U (en) | Solid state relay with energy recuperation utilization function | |
| CN103560160B (en) | Solar module | |
| CN210957841U (en) | Battery reverse connection preventing circuit applied to charging 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: 20140416 Termination date: 20171011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |