CN209217789U - Double-battery charge electric installation and system - Google Patents

Double-battery charge electric installation and system Download PDF

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Publication number
CN209217789U
CN209217789U CN201920110656.7U CN201920110656U CN209217789U CN 209217789 U CN209217789 U CN 209217789U CN 201920110656 U CN201920110656 U CN 201920110656U CN 209217789 U CN209217789 U CN 209217789U
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battery
charging circuit
sepic
control
circuit
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孙本新
范高林
高彩云
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BEIJING EPSOLAR TECHNOLOGY Co Ltd
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BEIJING EPSOLAR TECHNOLOGY Co Ltd
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Abstract

It includes: control assembly that the utility model, which provides a kind of double-battery charge electric installation and system, the device, and the first charging circuit and the second charging circuit that are separately connected with control assembly;Wherein, the first charging circuit provides the first rechargeable electrical energy for connecting with the first battery, and to the first battery;First charging circuit is MTTP charging circuit;Second charging circuit provides the second rechargeable electrical energy to the second battery for connecting with the first battery and the second battery, and by the first charging circuit and the first battery;Second charging circuit is SEPIC charging circuit;Control assembly is for obtaining corresponding first charge data of the first rechargeable electrical energy, the second charge data corresponding with the second rechargeable electrical energy, and the open and-shut mode based on the switching tube in the switching tube and the second charging circuit in the first charge data and the second charge data the first charging circuit of control.The circuit structure of the utility model is simple, while can also effectively improve the control precision to double cell.

Description

Double-battery charge electric installation and system
Technical field
The utility model relates to electroporation fields, more particularly, to a kind of double-battery charge electric installation and system.
Background technique
With the development of world economy and the arriving of people's Consumption Age, caravan market increases comparatively fast, and prospect is boundless. The power supply system of major part caravan is and life battery and vehicle launch by life battery and vehicle launch battery composition now Battery is all two charging control circuits independent of each other mostly, although and existing double cell controller can be simultaneously to two electricity Pond charging, but because realizing the control to double cell using relay is controlled leads to double cell controller there are volumes and is big The disadvantages of lower with control precision.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of double-battery charge electric installation and system, circuit structure letter It is single, while the control precision to double cell can also be effectively improved.
In a first aspect, the utility model embodiment provides a kind of double-battery charge electric installation, comprising: control assembly, and The first charging circuit and the second charging circuit being separately connected with control assembly;Wherein, the first charging circuit is used to store with first Battery connection, and the first rechargeable electrical energy is provided to the first battery;First charging circuit is MTTP charging circuit;Second charging electricity Road passes through the first charging circuit and the first battery to the second battery for connecting with the first battery and the second battery Second rechargeable electrical energy is provided;Second charging circuit is SEPIC charging circuit;Control assembly is corresponding for obtaining the first rechargeable electrical energy The first charge data and corresponding second charge data of the second rechargeable electrical energy, and based on the first charge data and second charging Data control the open and-shut mode of the switching tube in the first charging circuit and the switching tube in the second charging circuit.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect, In, above-mentioned second charging circuit is provided with first switch tube and second switch.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect Two kinds of possible embodiments, wherein above-mentioned control assembly includes sequentially connected sampling unit, MCU control unit and switch Driving unit;Wherein, sampling unit is for acquiring corresponding first charge data of the first rechargeable electrical energy and the second rechargeable electrical energy pair The second charge data answered;MCU control unit is used to generate first control signal based on the first charge data, and first is controlled Signal is sent to switch driving unit;Switch driving unit is used to control opening in the first charging circuit according to first control signal Close the open and-shut mode of the first switch tube in pipe and the second charging circuit.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect Three kinds of possible embodiments, wherein above-mentioned control assembly further includes the SEPIC driving unit connecting with MCU control unit;Its In, SEPIC driving unit is used to feed back the circuit information of the second charging circuit to MCU control unit;MCU control unit is also used to Second control signal is generated based on circuit information and the second charge data, and second control signal is sent to SEPIC driving list Member;SEPIC driving unit is also used to control the opening and closing of the third switching tube in the second charging circuit according to second control signal State.
The third possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect Four kinds of possible embodiments, wherein above-mentioned SEPIC driving unit include sequentially connected SEPIC voltage control unit and SEPIC switch control unit;Wherein, SEPIC voltage control unit is used to obtain the circuit information of the second charging circuit, and will be electric Road information is sent to SEPIC switch control unit;SEPIC voltage control unit is also used to control the charging in the second charge data Voltage value;SEPIC switch control unit is connected with MCU control unit, is used for MCU control unit feed circuit information, and base In the opening and closing of second control signal control third switching tube.
With reference to first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect, In, above-mentioned first charging circuit is provided with photovoltaic cell.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect, In, above-mentioned second charging circuit includes sequentially connected SEPIC opening and closing circuit and SEPIC step-up/step-down circuit.
The 6th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect Seven kinds of possible embodiments, wherein above-mentioned SEPIC opening and closing circuit includes sequentially connected second resistance and first switch tube.
Second aspect, the utility model embodiment also provide a kind of double-battery charge electric system, including such as first aspect to the The possible described in any item double-battery charge electric installations of embodiment of the 8th kind of one side, and divide with double-battery charge electric installation The first battery and the second battery not connected.
In conjunction with second aspect, the utility model embodiment provides the first possible embodiment of second aspect, In, above-mentioned first battery is also connect with the second battery.
The utility model embodiment bring it is following the utility model has the advantages that
Double-battery charge electric installation provided by the embodiment of the utility model and system, including control assembly, and and control assembly The first charging circuit and the second charging circuit being separately connected, wherein the first charging circuit is MTTP charging circuit, for the The connection of one battery, and the first rechargeable electrical energy is transmitted to the first battery;Second charging circuit is SEPIC charging circuit, is used for It connect with the first battery and the second battery, and is passed by above-mentioned first charging circuit and the first battery to the second battery Defeated second rechargeable electrical energy;Control assembly is used for based on corresponding first charge data of above-mentioned first rechargeable electrical energy and the second charging electricity Corresponding second charge data of energy, controls the opening and closing of the switching tube in the first charging circuit and the switching tube in the second charging circuit State.The utility model embodiment connects two pieces of batteries by MTTP charging circuit and SEPIC charging circuit simultaneously, and is based on First charge data and the second charge data are to the switching tube in the switching tube and SEPIC charging circuit in MTTP charging circuit Open and-shut mode controlled, to realize the control of recharge logic, and then effectively improve the control precision of double cell;In addition, Double battery control device structure provided by the embodiment of the utility model is simple, middle compared to the prior art to control relay to realize Double electricity can be effectively reduced by the way of control switch pipe open and-shut mode in control to double cell, the utility model embodiment The power consumption of pond control device, and extend the service life of double battery control device.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of double-battery charge electric installation provided by the embodiment of the utility model;
Fig. 2 is a kind of structural schematic diagram of control assembly provided by the embodiment of the utility model;
Fig. 3 is the structural schematic diagram of another double-battery charge electric installation provided by the embodiment of the utility model;
Fig. 4 is a kind of structural schematic diagram of double-battery charge electric system provided by the embodiment of the utility model.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
When charging at present to two batteries, generallys use control relay and realizes the charge control to double cell, But it is provided with the double battery control device of relay that generally there are volumes is big, power consumption is big, the service life is short and control speed is slower etc. Disadvantage is based on this, and a kind of double-battery charge electric installation provided by the embodiment of the utility model and system, circuit structure is simple, simultaneously The control precision to double cell can also be effectively improved.
To be controlled a kind of double cell disclosed in the utility model embodiment first convenient for understanding the present embodiment Device describes in detail, and a kind of structural schematic diagram of double battery control device shown in Figure 1, the device includes control group Part 110, and the first charging circuit 120 and the second charging circuit 130 that are separately connected with control assembly 110.
First charging circuit 120 provides the first rechargeable electrical energy for connecting with the first battery, and to the first battery.? In a kind of embodiment, PV (photovoltaic, photovoltaic) power supply is provided in the first charging circuit, for being the first battery Rechargeable electrical energy is provided, PV power supply is a kind of solar battery, it is contemplated that PV power supply is by extraneous factors such as light intensity and environment It influences, the output power of PV power supply can generate fluctuation, therefore the first charging circuit uses MTTP (Maximum Power Point Tracking, MPPT maximum power point tracking) charging circuit, by the generating voltage of MPPT charging circuit detecting real-time PV power supply, and Ceiling voltage current value is tracked, so that PV power supply be made to charge with maximum power output to the first electric power storage.
Second charging circuit 130 for connect with the first battery and the second battery, and by the first charging circuit with First battery provides the second rechargeable electrical energy to the second battery.Preferably, the second charging circuit uses SEPIC (Single Ended Primary Inductor Converter, single-ended primary side inductance type converter) charging circuit, because SEPIC fills SEPIC step-up/step-down circuit is provided in circuit, by the stepping functions using SEPIC step-up/step-down circuit may be implemented no matter Whether the current voltage of the first battery is higher or lower than the current voltage of the second battery, may be implemented to the second battery It charges.
Control assembly 110 is corresponding for obtaining corresponding first charge data of the first rechargeable electrical energy and the second rechargeable electrical energy The second charge data, and switching tube in the first charging circuit and the are controlled based on the first charge data and the second charge data The open and-shut mode of switching tube in two charging circuits.Specifically, the first charge data includes that MPPT charging circuit always exports electric current One of value, PV voltage value, the first battery charging current value or first battery charging voltage value are a variety of, the second charging Data include the second battery charging current value, and/or, the second battery charging voltage value.By to the first rechargeable electrical energy and Second rechargeable electrical energy carries out sampling processing, to obtain corresponding first charge data and the second charge data.Pass through control first The open and-shut mode of each switching tube in charging circuit and the second charging circuit, can be realized to the first battery and the second battery into Row charging.
Double-battery charge electric installation provided by the embodiment of the utility model and system, including control assembly, and and control assembly The first charging circuit and the second charging circuit being separately connected, wherein the first charging circuit is MTTP charging circuit, for the The connection of one battery, and the first rechargeable electrical energy is transmitted to the first battery;Second charging circuit is SEPIC charging circuit, is used for It connect with the first battery and the second battery, and is passed by above-mentioned first charging circuit and the first battery to the second battery Defeated second rechargeable electrical energy;Control assembly is used for based on corresponding first charge data of above-mentioned first rechargeable electrical energy and the second charging electricity Corresponding second charge data of energy, controls the opening and closing of the switching tube in the first charging circuit and the switching tube in the second charging circuit State.The utility model embodiment connects two pieces of batteries by MTTP charging circuit and SEPIC charging circuit simultaneously, and is based on First charge data and the second charge data are to the switching tube in the switching tube and SEPIC charging circuit in MTTP charging circuit Open and-shut mode controlled, to realize the control of recharge logic, and then effectively improve the control precision of double cell;In addition, Double battery control device structure provided by the embodiment of the utility model is simple, middle compared to the prior art to control relay to realize Double electricity can be effectively reduced by the way of control switch pipe open and-shut mode in control to double cell, the utility model embodiment The power consumption of pond control device, and extend the service life of double battery control device.
Further, for the ease of understanding double-battery charge electric installation provided by the above embodiment, the utility model Embodiment additionally provides a kind of control assembly, a kind of structural schematic diagram of control assembly shown in Figure 2, control assembly 110 include sequentially connected sampling unit 112, MCU (Microcontroller Unit, micro-control unit) control unit 114 With switch driving unit 116, and the SEPIC driving unit 118 being connect with MCU control unit 114.Further, SEPIC drives Moving cell 118 further includes sequentially connected SEPIC voltage control unit 1182 and SEPIC switch control unit 1184.
Specifically, sampling unit 112 is for acquiring corresponding first charge data of the first rechargeable electrical energy and the second charging electricity It can corresponding second charge data.Wherein, sampling unit uses AD (Analog-to-Digital Convert, analog-to-digital conversion) Sampling samples the electricity that PV cell voltage, the voltage and current of the first battery, MPPT export total current and the second battery by AD Current voltage obtains the first charge data and the second charge data.
MCU control unit 114 is used to generate first control signal based on the first charge data, and first control signal is sent out It send to switch driving unit 116.
Wherein, multiple switch pipe is provided in the first charging circuit, the second charging circuit is provided with first switch tube and Two switching tubes, and the multiple switch pipe in the first charging circuit is controlled by switch driving unit, and first switch tube is controlled by Driving unit is switched, and second switch is controlled by SEPIC driving unit, therefore, switch driving unit 116 is used for according to first Control the open and-shut mode that signal controls the switching tube in the first charging circuit and the first switch tube in the second charging circuit.
Further, SEPIC driving unit 118 is used to feed back the circuit letter of the second charging circuit to MCU control unit 112 Breath.Wherein, circuit information is the current information and information of voltage of the second charging circuit, so that MCU control unit is believed according to electric current Breath or information of voltage judge whether the second charging circuit is in over-current state or overvoltage condition.In addition, MCU control unit is also used In generating second control signal based on foregoing circuit information and above-mentioned second charge data, and second control signal is sent to SEPIC driving unit.SEPIC driving unit is also used to control the third in the second charging circuit according to second control signal and open Close the open and-shut mode of pipe.
Above-mentioned SEPIC driving unit 118 includes SEPIC voltage control unit 1182 and SEPIC switch control unit 1184, Wherein, SEPIC voltage control unit 1182 is used to obtain the circuit information of the second charging circuit, and circuit information is sent to SEPIC switch control unit 1184 is also used to control the charging voltage value in the second charge data;SEPIC switch control unit 1184 are connected with MCU control unit, for MCU control unit feed circuit information, and based on second control signal control the The opening and closing of three switching tubes.
The structural schematic diagram of another double-battery charge electric installation shown in Figure 3 is provided with light in the first charging circuit Lie prostrate battery;Sequentially connected SEPIC opening and closing circuit and SEPIC step-up/step-down circuit are provided in the second charging circuit.Wherein, It includes sequentially connected second resistance and first switch tube that SEPIC, which is opened and closed circuit,.
MCU handles (namely MCU control unit) and samples PV cell voltage, battery BAT1 (that is, aforementioned first by AD Battery) voltage and current, MPPT output total current and battery BAT2 (that is, aforementioned second battery) voltage and current, Cooperate simultaneously hardware Sepic buck charging circuit (that is, aforementioned SEPIC step-up/step-down circuit) realize to switching tube Q1 in figure, The control of Q2, Q3, Q4, Q5, to complete recharge logic control.Wherein Q1, Q2, Q3 are each switch in the first charging circuit Pipe, Q4 are aforementioned first switch tube, and Q5 is aforementioned second switch.In addition, structural schematic diagram as shown in Figure 3, switch driving As aforementioned switches driving unit, SEPIC circuit controller are aforementioned SEPIC switch control unit, and SEPIC circuit output is permanent Pressing current constant control is aforementioned SEPIC voltage control unit.
Specifically, the first charging circuit is MPPT charging circuit, it is mainly used for storing for caravan household electricity corresponding first Battery charges, and the first charging circuit uses advanced MPPT control algolithm and the self-adapting type three with Digital Circuit Control Stage charge mode, at the same the first charging circuit also have overcharge, over-discharge, the comprehensive Electronic Protection function such as PV and reverse connection of accumulator Energy.Second charging circuit be by hard-wired SEPIC charging circuit, be mainly used for meet supplement car engine battery ( That is, aforementioned second battery) charge requirement, the second charging circuit be include an independent hardware SEPIC buck constant current Charging circuit, SEPIC buck constant-current charging circuit have maximum limit voltage, and it is defeated then to enter hardware constant pressure more than setting voltage It charges out, while also there is SEPIC step-up/step-down circuit high-end main circuit to be isolated.
Further, the utility model embodiment additionally provides the charge condition for opening the second battery, opens second and stores The charge condition of battery is as follows:
(1) when PV power supply meets charge condition voltage, and when BAT1 is fully charged, that is, meet the item for opening the second battery Part.Wherein, charge condition voltage can be arranged based on actual conditions.
(2) when PV power supply meets charge condition voltage, and total charging current is greater than the set value, and BAT2 exists, and BAT2 Voltage meets the item for opening the second battery lower than the corresponding charging return voltage of the BAT2 and not up to full of voltage Part.Wherein, charging return voltage can be also arranged based on actual conditions.
Further, the utility model embodiment additionally provides the charge condition for closing the second battery, closes second and stores The charge condition of battery is as follows: the charge condition for closing BAT2 is as follows:
(1) when PV power supply is unsatisfactory for charge condition voltage.
(2) when BAT1 underfill and total charging current is less than setting value.
(3) when BAT2 is not present.
(4) it is not less than charging return voltage again full of voltage when BAT2 voltage reaches.
In conclusion the utility model embodiment using the stepping functions of SEPIC charging circuit realize no matter first Battery voltage is above or below the voltage of the second battery, can realize and charge to the second battery, match simultaneously It closes and is sampled with the control of MCU processing unit and AD, reasonably realized to the charging control logic of the second battery and corresponding Protection control.The circuit structure of double-battery charge electric installation provided by the utility model is simple, and control precision is high, accurately realization pair The reasonable charge and discharge control of first battery and the second battery, effectively protects the battery unit in caravan power supply system, Keep the power supply system of caravan more stable and reliable simultaneously, it is convenient and efficient.
For the double-battery charge electric installation that previous embodiment provides, the utility model embodiment additionally provides a kind of double cell Charging system, a kind of structural schematic diagram of double-battery charge electric system shown in Figure 4, which includes aforementioned The double-battery charge electric installation 100 that embodiment provides, and the first battery 200 being separately connected with double-battery charge electric installation 100 With the second battery 300.
In addition, the first battery is also connected with the second battery, and when the first electric power storage tank discharge, the electric discharge of the first battery Voltage will be transmitted to the second battery, can be used for for the charging of the second battery.
The utility model implements to be set to the first battery by double-battery charge Denso and the second battery charges, due to this reality With new embodiment two pieces of batteries are connected by MTTP charging circuit and SEPIC charging circuit simultaneously, and first is filled based on this The opening and closing shape of electric data and the second charge data to the switching tube in the switching tube and SEPIC charging circuit in MTTP charging circuit State is controlled, to realize the control of recharge logic, and then effectively improves the control precision of double cell;In addition, this is practical new The double battery control device structure that type embodiment provides is simple, compared to the prior art in realized by control relay to double Double cell control can be effectively reduced by the way of control switch pipe open and-shut mode in the control of battery, the utility model embodiment The power consumption of device processed, and extend the service life of double battery control device.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description Specific work process, can be with reference to the corresponding process in previous embodiment, and details are not described herein.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect It connects;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, can also indirectly connected through an intermediary, it can To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition Concrete meaning in the present invention.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features;And these modifications, Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be wanted with the right Subject to the protection scope asked.

Claims (10)

1. a kind of double-battery charge electric installation characterized by comprising control assembly, and be separately connected with the control assembly The first charging circuit and the second charging circuit;Wherein,
First charging circuit provides the first rechargeable electrical energy for connecting with the first battery, and to first battery; First charging circuit is MTTP charging circuit;
Second charging circuit passes through the first charging electricity for connecting with first battery and the second battery Road and first battery provide the second rechargeable electrical energy to second battery;Second charging circuit fills for SEPIC Circuit;
The control assembly is for obtaining corresponding first charge data of first rechargeable electrical energy and second rechargeable electrical energy Corresponding second charge data, and based on first charge data and second charge data control the first charging electricity The open and-shut mode of switching tube in road and the switching tube in second charging circuit.
2. the apparatus according to claim 1, which is characterized in that second charging circuit is provided with first switch tube and Two switching tubes.
3. the apparatus of claim 2, which is characterized in that the control assembly include sequentially connected sampling unit, MCU control unit and switch driving unit;Wherein,
The sampling unit is for acquiring corresponding first charge data of first rechargeable electrical energy and second rechargeable electrical energy Corresponding second charge data;
The MCU control unit is used to generate first control signal based on first charge data, and described first is controlled Signal is sent to the switch driving unit;
The switch driving unit be used to be controlled according to the first control signal switching tube in first charging circuit and The open and-shut mode of first switch tube in second charging circuit.
4. device according to claim 3, which is characterized in that the control assembly further includes and the MCU control unit The SEPIC driving unit of connection;Wherein,
The SEPIC driving unit is used to feed back the circuit information of second charging circuit to the MCU control unit;
The MCU control unit is also used to generate second control signal based on the circuit information and second charge data, And the second control signal is sent to the SEPIC driving unit;
The SEPIC driving unit is also used to control the third in second charging circuit according to the second control signal The open and-shut mode of switching tube.
5. device according to claim 4, which is characterized in that the SEPIC driving unit includes sequentially connected SEPIC Voltage control unit and SEPIC switch control unit;Wherein,
The SEPIC voltage control unit is used to obtain the circuit information of second charging circuit, and by the circuit information It is sent to the SEPIC switch control unit;The SEPIC voltage control unit is also used to control in second charge data Charging voltage value;
The SEPIC switch control unit is connected with the MCU control unit, for described in MCU control unit feedback Circuit information, and control based on the second control signal opening and closing of the third switching tube.
6. the apparatus according to claim 1, which is characterized in that first charging circuit is provided with photovoltaic cell.
7. the apparatus according to claim 1, which is characterized in that second charging circuit includes sequentially connected SEPIC It is opened and closed circuit and SEPIC step-up/step-down circuit.
8. device according to claim 7, which is characterized in that the SEPIC opening and closing circuit includes sequentially connected second Resistance and first switch tube.
9. a kind of double-battery charge electric system, which is characterized in that charge including double cell as claimed in any one of claims 1 to 8 Device, and the first battery and the second battery that are separately connected with the double-battery charge electric installation.
10. system according to claim 9, which is characterized in that first battery also connects with second battery It connects.
CN201920110656.7U 2019-01-22 2019-01-22 Double-battery charge electric installation and system Active CN209217789U (en)

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Application Number Priority Date Filing Date Title
CN201920110656.7U CN209217789U (en) 2019-01-22 2019-01-22 Double-battery charge electric installation and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920110656.7U CN209217789U (en) 2019-01-22 2019-01-22 Double-battery charge electric installation and system

Publications (1)

Publication Number Publication Date
CN209217789U true CN209217789U (en) 2019-08-06

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