CN111584958A - Hybrid battery system for vehicle and control method - Google Patents
Hybrid battery system for vehicle and control method Download PDFInfo
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- CN111584958A CN111584958A CN202010409316.1A CN202010409316A CN111584958A CN 111584958 A CN111584958 A CN 111584958A CN 202010409316 A CN202010409316 A CN 202010409316A CN 111584958 A CN111584958 A CN 111584958A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims abstract description 59
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 239000003990 capacitor Substances 0.000 claims description 23
- 230000005669 field effect Effects 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 9
- 239000007858 starting material Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a vehicle hybrid battery system and a control method, comprising the following steps: the system comprises a starting module, a battery management module, an energy storage module, a lithium battery module heating film, a heating relay, a lithium battery protection relay, a one-way bridging DC/DC, a charging relay, an input bridge relay, an output bridge relay, a starting binding post, a negative binding post and a positive binding post; the battery management module is respectively connected with the starting module, the energy storage module, the heating relay, the lithium battery protection relay, the one-way bridging DC/DC, the charging relay, the input bridge relay and the output bridge relay. The invention utilizes the energy storage module and the starting module to respectively supply power to the whole vehicle circuit and the starting circuit, realizes the separation of the whole vehicle circuit and the starting circuit, and solves the influence of the whole vehicle starting moment on the whole vehicle circuit voltage.
Description
Technical Field
The invention relates to the technical field of storage batteries, in particular to a hybrid storage battery system for a vehicle and a control method.
Background
At present, the automobile industry is gradually developing, and with the increase of environmental protection, certain limitation is caused to fuel automobiles. Therefore, vehicles with new energy power, electric vehicles or vehicles with fuel oil and electric power mixed are required to be developed widely.
The existing new energy vehicles adopt lead storage batteries, the capacity, the volume and the weight of the lead storage batteries are large, the service life of the lead storage batteries is still short relative to the service life of the whole vehicle, and the development of the new energy vehicles is limited. The scheme for replacing the lead storage battery is that a lithium battery is adopted, but the cold starting performance of the lithium battery in a low-temperature environment is poor, the cold starting time is long, and the requirement that a user uses a parking air conditioner and other high-power parking electric appliances for a long time cannot be met. Moreover, the problems of voltage fluctuation of the whole vehicle circuit, undervoltage of electric appliances and the like are caused at the moment of starting.
Disclosure of Invention
In order to overcome the above-mentioned disadvantages of the prior art, the present invention provides a hybrid battery system for a vehicle, comprising: the system comprises a starting module, a battery management module, an energy storage module, a lithium battery module heating film, a heating relay, a lithium battery protection relay, a one-way bridging DC/DC, a charging relay, an input bridge relay, an output bridge relay, a starting binding post, a negative binding post and a positive binding post;
the positive electrode of the starting module is respectively connected with the first end of the input bridge relay, the first end of the output bridge relay, the starting wiring terminal, the first end of the charging relay and the first end of the heating relay;
the negative electrode of the starting module and the negative electrode of the energy storage module are respectively connected with a negative terminal;
the anode of the energy storage module is respectively connected with the second end of the output bridge relay and the second end of the lithium battery protection relay;
the first end of the lithium battery protection relay is respectively connected with the second end of the input bridge relay, the positive terminal and the second end of the charging relay;
the second end of the heating relay is connected with the negative terminal through a heating film of the lithium battery module;
the input end of the unidirectional bridging DC/DC is respectively in normally open connection with the first end and the second end of the input bridge relay;
the output end of the unidirectional bridging DC/DC is respectively in normally open connection with the first end and the second end of the output bridge relay;
the battery management module is respectively connected with the starting module, the energy storage module, the heating relay, the lithium battery protection relay, the one-way bridging DC/DC, the charging relay, the input bridge relay and the output bridge relay.
It should be further noted that the energy storage module is formed by connecting single lithium ion battery cells, and the starting module is formed by connecting single super-capacitors.
Further, it should be noted that the method further includes: a display screen;
the display screen is connected with the battery management module, and the display screen displays the state information of the starting module, the energy storage module, the heating relay, the lithium battery protection relay, the one-way bridging DC/DC, the charging relay, the input bridge relay and the output bridge relay.
It should be further noted that the battery management module is connected to the starting module and the energy storage module through the electric quantity collecting circuit.
It should be further noted that the battery management module is respectively connected with the unidirectional bridging DC/DC, the charging relay, the input bridge relay and the output bridge relay through the control circuit;
the control circuit includes: a field effect transistor Q1, a triode Q2, a triode Q3, a triode Q4, a resistor R1, a resistor R2, a resistor R3, an inductor L, a capacitor C1 and a capacitor C2;
a first end of the resistor R2 is connected with the battery management module; the second end of the resistor R2 is respectively connected with the base electrode of the triode Q2 and the base electrode of the triode Q3 and grounded; an emitter of the triode Q2, an emitter of the triode Q3, an emitter of the triode Q4, a second end of the capacitor C1 and a second end of the capacitor C2 are respectively grounded;
the first end of the resistor R1, the first end of the resistor R3 and the drain electrode of the field effect transistor Q1 are respectively connected with the power input end; the grid electrode of the field effect transistor Q1 and the second end of the resistor R1 are respectively connected with the collector electrode of the triode Q2;
the second end of the resistor R3 is respectively connected with the collector of the triode Q3 and the base of the triode Q4;
the source electrode of the field effect transistor Q1 is respectively connected with the collector electrode of the triode Q4 and the first end of the inductor L;
the second terminal of the inductor L is connected to the output terminal of the control circuit, the first terminal of the capacitor C1 and the first terminal of the capacitor C2, respectively.
The invention also provides a control method of the hybrid storage battery for the vehicle, which comprises the following steps:
when the whole vehicle is parked and the parking electric device is used: the energy storage module electrically supplies power to the parking of the whole vehicle;
when the key of the whole vehicle is turned on: the energy storage module supplies power to a load in a finished automobile circuit;
when the key of the whole vehicle is started: the energy storage module supplies power to a load in a whole vehicle circuit, and the starting module supplies power to the starter.
It should be further noted that, when the power of the start module is insufficient: the battery management module controls an input bridge relay switch-on contact and an output bridge relay switch-on contact, controls the starting of the unidirectional bridging DC/DC voltage compensation and stabilization system, and realizes that the energy storage module charges the starting module;
when the whole vehicle runs: the excitation generator generates electricity, and the excitation generator charges the starting module through the starting wiring terminal;
the battery management module controls the input bridge relay to be connected with the second end of the contact and controls the output bridge relay to be connected with the first end; and controlling the one-way bridging DC/DC to work and charging the energy storage module.
It should be further explained that, when the ambient temperature exceeds the charging and discharging threshold of the energy storage module, or the energy storage module is over-charged, over-discharged, and fails: the battery management module controls and controls the one-way bridging DC/DC to be out of work, controls the lithium battery protection contactor to be disconnected and controls the charging relay to be connected;
when the whole vehicle runs and the ambient temperature exceeds the charging and discharging threshold value of the energy storage module: the battery management module controls the lithium battery protection contactor to be switched off and then controls the charging relay to be switched on, so that the excitation generator supplies power to the whole vehicle circuit through the starting binding post;
the battery management module controls the heating relay to be closed, and the heating film of the lithium battery module heats the energy storage module.
It should be further noted that when the energy storage module fails, the battery management module controls the lithium battery protection contactor to be switched off, then controls the charging relay to be switched on, independently uses the starting module to stabilize voltage, and supplies power to the entire vehicle circuit through the positive terminal;
when the system is not used as a whole due to faults: the battery management module controls the lithium battery protection contactor to be switched off, then controls the charging relay to be switched on, and uses an external storage battery to lap the starting terminal and the negative terminal to start and supply power to the whole vehicle.
According to the technical scheme, the invention has the following advantages:
the battery management module realizes communication and control with the energy storage module, the starting module, the one-way bridging DC/DC, the heating relay, the lithium battery protection relay and the charging relay through the control wire harness. The energy storage module and the starting module are used for respectively supplying power to the whole vehicle circuit and the starting circuit, so that the whole vehicle circuit and the starting circuit are separated, and the influence of the whole vehicle starting moment on the voltage of the whole vehicle circuit is solved.
In the use process of the automobile storage battery, the problem that the storage battery is damaged due to the fact that factors such as overvoltage and overcurrent do not accord with the use condition and the like are influenced by the environment temperature is solved, the storage battery is prevented from being damaged, the new energy vehicle can not be normally used, and the use experience of a user is influenced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of a hybrid battery system for a vehicle;
fig. 2 is a control circuit diagram.
In the figure: 1. the battery protection system comprises a starting module, a battery management module 2, an energy storage module 3, a lithium battery module heating film 4, a heating relay 5, a lithium battery protection relay 6, a unidirectional bridging DC/DC7, a charging relay 8, an input bridge relay 9, an output bridge relay 10, a starting terminal 11, a negative terminal 12 and a positive terminal 13.
Detailed Description
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means. In fig. 1, the solid line part is a conductor electrical connection structure between system parts, the dashed line part is a system control line connection structure, and the two-dot chain line part is an internal structure of the whole bipolar column dual-power parallel system for the vehicle.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
The present invention provides a hybrid battery system for a vehicle, as shown in fig. 1, including: the system comprises a starting module 1, a battery management module 2, an energy storage module 3, a lithium battery module heating film 4, a heating relay 5, a lithium battery protection relay 6, a one-way bridging DC/DC7, a charging relay 8, an input bridge relay 9, an output bridge relay 10, a starting binding post 11, a negative binding post 12 and a positive binding post 13;
the positive electrode of the starting module 1 is respectively connected with the first end of the input bridge relay 9, the first end of the output bridge relay 10, the starting wiring terminal 11, the first end of the charging relay 8 and the first end of the heating relay 5; the negative electrode of the starting module 1 and the negative electrode of the energy storage module 3 are respectively connected with a negative terminal 12; the anode of the energy storage module 3 is respectively connected with the second end of the output bridge relay 10 and the second end of the lithium battery protection relay 6; the first end of the lithium battery protection relay 6 is respectively connected with the second end of the input bridge relay 9, the positive terminal 13 and the second end of the charging relay 8; the second end of the heating relay 5 is connected with a negative terminal 12 through a lithium battery module heating film 4; the input end of the unidirectional bridging DC/DC7 is a normally open point with the first end and the second end of the input bridge relay 9 respectively; the output end of the unidirectional bridging DC/DC7 is normally open with the first end and the second end of the output bridge relay 10 respectively;
the battery management module 2 is respectively connected with the starting module 1, the energy storage module 3, the heating relay 5, the lithium battery protection relay 6, the one-way bridging DC/DC7, the charging relay 8, the input bridge relay 9 and the output bridge relay 10. Here, the battery management module realizes communication and control with the energy storage module, the starting module, the one-way bridging DC/DC, the heating relay, the lithium battery protection relay and the charging relay through the control wire harness. The battery management module 2 can acquire the electric quantity information of the starting module 1 and the energy storage module 3, output voltage information and the like.
The energy storage module is formed by connecting lithium ion battery cell monomers, and the starting module is formed by connecting super capacitor monomers.
The positive pole of the energy storage module is connected with the whole vehicle load, the whole vehicle normal electric load and the whole vehicle parking electric appliance except the starter and the generator to form a whole vehicle circuit. The positive pole of the starting module is connected with the positive pole of the starter and the positive pole of the generator to form a starting power generation circuit. The one-way bridging DC/DC is connected between the output end of the lithium battery protection contactor and the positive output circuit of the starting module.
The system further comprises: a display screen; the display screen is connected with the battery management module 2, and the display screen displays the state information of the starting module 1, the energy storage module 3, the heating relay 5, the lithium battery protection relay 6, the one-way bridging DC/DC7, the charging relay 8, the input bridge relay 9 and the output bridge relay 10. The display screen can also use a touch screen, and the display screen can be arranged in the cab and controlled by a driver.
The vehicle hybrid battery system may be implemented in hardware, software, firmware, or any combination thereof. Various features are described as modules, units or components that may be implemented together in an integrated logic device or separately as discrete but interoperable logic devices or other hardware devices. In some cases, various features of an electronic circuit may be implemented as one or more integrated circuit devices, such as an integrated circuit chip or chipset.
The battery management module may include one or more processors executing, for example, one or more Digital Signal Processors (DSPs), general purpose microprocessors, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Thus, the term "processor," as used herein, may refer to any of the foregoing structure or any other structure more suitable for implementing the techniques described herein. In addition, in some aspects, the functionality described in this disclosure may be provided in software modules and hardware modules.
In the invention, as shown in fig. 2, the battery management module 2 is respectively connected with a unidirectional bridge DC/DC7, a charging relay 8, an input bridge relay 9 and an output bridge relay 10 through a control circuit;
the control circuit includes: a field effect transistor Q1, a triode Q2, a triode Q3, a triode Q4, a resistor R1, a resistor R2, a resistor R3, an inductor L, a capacitor C1 and a capacitor C2; the first end of the resistor R2 is connected with the battery management module 2; the second end of the resistor R2 is respectively connected with the base electrode of the triode Q2 and the base electrode of the triode Q3 and grounded; an emitter of the triode Q2, an emitter of the triode Q3, an emitter of the triode Q4, a second end of the capacitor C1 and a second end of the capacitor C2 are respectively grounded; the first end of the resistor R1, the first end of the resistor R3 and the drain electrode of the field effect transistor Q1 are respectively connected with the power input end; the grid electrode of the field effect transistor Q1 and the second end of the resistor R1 are respectively connected with the collector electrode of the triode Q2; the second end of the resistor R3 is respectively connected with the collector of the triode Q3 and the base of the triode Q4; the source electrode of the field effect transistor Q1 is respectively connected with the collector electrode of the triode Q4 and the first end of the inductor L; the second terminal of the inductor L is connected to the output terminal of the control circuit, the first terminal of the capacitor C1 and the first terminal of the capacitor C2, respectively.
The inductor L, the capacitor C1 and the capacitor C2 form a filter circuit. Transistor Q2 and transistor Q3 provide amplification of the signal. The battery management module 2 can timely and accurately control the operation of the one-way bridging DC/DC7, the charging relay 8, the input bridge relay 9 and the output bridge relay 10, and the stability of the hybrid storage battery system for the vehicle is ensured.
The invention also provides a control method of the hybrid storage battery for the vehicle based on the system, which comprises the following steps:
when the whole vehicle is parked and the parking electric device is used: the energy storage module electrically supplies power to the parking of the whole vehicle;
when the key of the whole vehicle is turned on: the energy storage module supplies power to a load in a finished automobile circuit;
when the key of the whole vehicle is started: the energy storage module supplies power to a load in a whole vehicle circuit, and the starting module supplies power to the starter.
When the starting module is insufficient in electric quantity: the battery management module controls an input bridge relay switch-on contact and an output bridge relay switch-on contact, controls the starting of the unidirectional bridging DC/DC voltage compensation and stabilization system, and realizes that the energy storage module charges the starting module;
when the whole vehicle runs: the excitation generator generates electricity, and the excitation generator charges the starting module through the starting wiring terminal;
the battery management module controls the input bridge relay to be connected with the second end of the contact and controls the output bridge relay to be connected with the first end; and controlling the one-way bridging DC/DC to work and charging the energy storage module.
When ambient temperature surpassed energy storage module charge-discharge threshold value, or when energy storage module overcharged, overdischarged, the trouble: the battery management module controls and controls the one-way bridging DC/DC to be out of work, controls the lithium battery protection contactor to be disconnected and controls the charging relay to be connected;
when the whole vehicle runs and the ambient temperature exceeds the charging and discharging threshold value of the energy storage module: the battery management module controls the lithium battery protection contactor to be switched off and then controls the charging relay to be switched on, so that the excitation generator supplies power to the whole vehicle circuit through the starting binding post;
the battery management module controls the heating relay to be closed, and the heating film of the lithium battery module heats the energy storage module.
When the energy storage module breaks down, the battery management module controls the lithium battery protection contactor to be switched off, then controls the charging relay to be switched on, independently uses the starting module to stabilize voltage, and supplies power to the whole vehicle circuit through the positive terminal;
when the system is not used as a whole due to faults: the battery management module controls the lithium battery protection contactor to be switched off, then controls the charging relay to be switched on, and uses an external storage battery to lap the starting terminal and the negative terminal to start and supply power to the whole vehicle.
The vehicle hybrid battery system of the present invention is implemented in electronic hardware, computer software, or a combination of both, the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein, the components and steps of the examples having been generally described in terms of function in the foregoing description for clarity of the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A hybrid battery system for a vehicle, characterized by comprising: the lithium battery pack comprises a starting module (1), a battery management module (2), an energy storage module (3), a lithium battery module heating film (4), a heating relay (5), a lithium battery protection relay (6), a one-way bridging DC/DC (7), a charging relay (8), an input bridge relay (9), an output bridge relay (10), a starting binding post (11), a negative binding post (12) and a positive binding post (13);
the positive electrode of the starting module (1) is respectively connected with the first end of the input bridge relay (9), the first end of the output bridge relay (10), the starting wiring terminal (11), the first end of the charging relay (8) and the first end of the heating relay (5);
the negative electrode of the starting module (1) and the negative electrode of the energy storage module (3) are respectively connected with a negative terminal (12);
the anode of the energy storage module (3) is respectively connected with the second end of the output bridge relay (10) and the second end of the lithium battery protection relay (6);
the first end of the lithium battery protection relay (6) is respectively connected with the second end of the input bridge relay (9), the positive terminal (13) and the second end of the charging relay (8);
the second end of the heating relay (5) is connected with a negative terminal (12) through a lithium battery module heating film (4);
the input end of the unidirectional bridging DC/DC (7) is respectively at a normally open point with the first end and the second end of the input bridge relay (9);
the output end of the unidirectional bridging DC/DC (7) is respectively in normally open connection with the first end and the second end of the output bridge relay (10);
the battery management module (2) is respectively connected with the starting module (1), the energy storage module (3), the heating relay (5), the lithium battery protection relay (6), the one-way bridging DC/DC (7), the charging relay (8), the input bridge relay (9) and the output bridge relay (10).
2. The vehicular hybrid battery system according to claim 1,
the energy storage module is formed by connecting lithium ion battery cell monomers, and the starting module is formed by connecting super capacitor monomers.
3. The vehicular hybrid battery system according to claim 1,
further comprising: a display screen;
the display screen is connected with the battery management module (2), and the display screen displays the state information of the starting module (1), the energy storage module (3), the heating relay (5), the lithium battery protection relay (6), the one-way bridging DC/DC (7), the charging relay (8), the input bridge relay (9) and the output bridge relay (10).
4. The vehicular hybrid battery system according to claim 1,
the battery management module (2) is respectively connected with the starting module (1) and the energy storage module (3) through an electric quantity acquisition circuit.
5. The vehicular hybrid battery system according to claim 1,
the battery management module (2) is respectively connected with the unidirectional bridging DC/DC (7), the charging relay (8), the input bridge relay (9) and the output bridge relay (10) through a control circuit;
the control circuit includes: a field effect transistor Q1, a triode Q2, a triode Q3, a triode Q4, a resistor R1, a resistor R2, a resistor R3, an inductor L, a capacitor C1 and a capacitor C2;
the first end of the resistor R2 is connected with the battery management module (2); the second end of the resistor R2 is respectively connected with the base electrode of the triode Q2 and the base electrode of the triode Q3 and grounded; an emitter of the triode Q2, an emitter of the triode Q3, an emitter of the triode Q4, a second end of the capacitor C1 and a second end of the capacitor C2 are respectively grounded;
the first end of the resistor R1, the first end of the resistor R3 and the drain electrode of the field effect transistor Q1 are respectively connected with the power input end; the grid electrode of the field effect transistor Q1 and the second end of the resistor R1 are respectively connected with the collector electrode of the triode Q2;
the second end of the resistor R3 is respectively connected with the collector of the triode Q3 and the base of the triode Q4;
the source electrode of the field effect transistor Q1 is respectively connected with the collector electrode of the triode Q4 and the first end of the inductor L;
the second terminal of the inductor L is connected to the output terminal of the control circuit, the first terminal of the capacitor C1 and the first terminal of the capacitor C2, respectively.
6. A control method of a hybrid battery for a vehicle, characterized by using the hybrid battery system for a vehicle according to any one of claims 1 to 5; the method comprises the following steps:
when the whole vehicle is parked and the parking electric device is used: the energy storage module electrically supplies power to the parking of the whole vehicle;
when the key of the whole vehicle is turned on: the energy storage module supplies power to a load in a finished automobile circuit;
when the key of the whole vehicle is started: the energy storage module supplies power to a load in a whole vehicle circuit, and the starting module supplies power to the starter.
7. The vehicular hybrid battery control method according to claim 6,
when the starting module is insufficient in electric quantity: the battery management module controls an input bridge relay switch-on contact and an output bridge relay switch-on contact, controls the starting of the unidirectional bridging DC/DC voltage compensation and stabilization system, and realizes that the energy storage module charges the starting module;
when the whole vehicle runs: the excitation generator generates electricity, and the excitation generator charges the starting module through the starting wiring terminal;
the battery management module controls the input bridge relay to be connected with the second end of the contact and controls the output bridge relay to be connected with the first end; and controlling the one-way bridging DC/DC to work and charging the energy storage module.
8. The vehicular hybrid battery control method according to claim 6,
when ambient temperature surpassed energy storage module charge-discharge threshold value, or when energy storage module overcharged, overdischarged, the trouble: the battery management module controls and controls the one-way bridging DC/DC to be out of work, controls the lithium battery protection contactor to be disconnected and controls the charging relay to be connected;
when the whole vehicle runs and the ambient temperature exceeds the charging and discharging threshold value of the energy storage module: the battery management module controls the lithium battery protection contactor to be switched off and then controls the charging relay to be switched on, so that the excitation generator supplies power to the whole vehicle circuit through the starting binding post;
the battery management module controls the heating relay to be closed, and the heating film of the lithium battery module heats the energy storage module.
9. The vehicular hybrid battery control method according to claim 6,
when the energy storage module breaks down, the battery management module controls the lithium battery protection contactor to be switched off, then controls the charging relay to be switched on, independently uses the starting module to stabilize voltage, and supplies power to the whole vehicle circuit through the positive terminal;
when the system is not used as a whole due to faults: the battery management module controls the lithium battery protection contactor to be switched off, then controls the charging relay to be switched on, and uses an external storage battery to lap the starting terminal and the negative terminal to start and supply power to the whole vehicle.
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Application publication date: 20200825 |