CN209592113U - A kind of battery strings module of electric automobile power battery system - Google Patents

A kind of battery strings module of electric automobile power battery system Download PDF

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Publication number
CN209592113U
CN209592113U CN201920164140.0U CN201920164140U CN209592113U CN 209592113 U CN209592113 U CN 209592113U CN 201920164140 U CN201920164140 U CN 201920164140U CN 209592113 U CN209592113 U CN 209592113U
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battery
bmu
module
parallel
execution unit
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CN201920164140.0U
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丁晓冬
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Harbin motui Technology Co., Ltd
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Ding Yu Qing
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    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A kind of battery strings module of electric automobile power battery system, including the BMU control module of CAN bus and the incoming end in parallel of sequential connection is arranged, BMU execution unit, series connection battery core, incoming end in parallel, the BMU execution unit includes connecting again with current sample element after charge control module and control of discharge wired in parallel, the BMU control module is separately connected BMU execution unit and series connection battery core, the series connection battery core includes that at least two battery cores are connected in series, the utility model connects composition with BMU execution unit by BMU control module using multiple battery cores, different capabilities may be implemented, different types of series connection battery core carries out used in parallel, keep battery pack configuration more flexible, it ensure that and be independent of each other between battery strings module and can put into and exit at any time battery pack, make electric car operation more Securely and reliably, achieve the purpose that convenience easy to maintenance, charging modes flexibly and fast, substantially increase vehicle service life, while also having good economic benefit and social benefit.

Description

A kind of battery strings module of electric automobile power battery system
Technical field
The utility model relates to technical field of new energy, more specifically, more particularly, to using in electric car On a kind of electric automobile power battery system battery strings module.
Background technique
With the development of new-energy automobile, as clean energy vehicle, the main energy sources of electric car are power batteries, are The high power applications demand for meeting electric car, generallys use the power electric being made of several hundred power batteries in the prior art Cell system powers to electric car, and usually there are two types of modes: first is that being connected by 100 or so high capacity cells, second is that by several It is connected into large-capacity battery pack after hundred small-capacity cells are first in parallel, but is had following defects that i.e. since power battery manufactures work The defect of skill, it is difficult to guarantee in electrokinetic cell system, all batteries all keep high consistency, in use, have Percentage of batteries may be chronically at the electricity of overcharge or over-discharge state in the state for the perhaps over-discharge of overcharging Pond is easy to damage, and then influences the use of entire battery pack, therefore two kinds of connection types of above-mentioned power battery have its fatal Defect, any one monomer goes wrong in link of exactly connecting, and can all influence the course continuation mileage of vehicle, or even can not go Make, once and battery pack has gone out any problem, can only trailer to specialized maintenance factory overhaul, it is time-consuming and laborious, influence Working Life, And the power battery that the prior art both modes form, there are problems that charging for a long time, therefore, in the prior art Considering, using multi-string battery string module, is then composing in parallel power battery pack and be applied on electric car, it is electronic to solve Vehicle operational safety is reliable, convenience easy to maintenance, reduces the problems such as charging time, but due to carrying out go here and there again after battery series connection more When composing in parallel Prospect of EVS Powered with Batteries group, there can be the case where mutual charge and discharge between battery strings, in condition Battery strings can constantly supplement energy to backward battery strings, that is to say, that once occur behindhand battery string, whole group in battery pack The health status of battery declines quickly, and course continuation mileage is caused to be difficult to maintain.
The content of the present invention
In view of the above drawbacks of the prior art and problem, the technical problem to be solved by the utility model is to provide a kind of electricity The battery strings module of electrical automobile electrokinetic cell system, multiple battery strings are suitble to parallel connection to be used as electrokinetic cell system, are electronic vapour Vehicle provides and effectively uses power battery, and convenience safe and reliable to operation, easy to maintenance, charging modes flexibly and fast, make electronic vapour Che Gengyou dissemination.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of battery strings module of electric automobile power battery system, including be arranged CAN bus BMU control module and Incoming end in parallel, BMU execution unit, series connection battery core, the incoming end in parallel of sequential connection, the BMU execution unit includes charging It connects again with current sample element after control module and control of discharge wired in parallel, the BMU control module is separately connected BMU and holds Row unit and series connection battery core, the series connection battery core include that at least two battery cores are connected in series.
In above-mentioned technical proposal, the charge control module is made of non-return diode connection charge switch, the electric discharge Control module is made of non-return diode connection discharge switch.
In above-mentioned technical proposal, BMU control unit respectively with the current sample element of BMU execution unit and battery core of connecting CAN bus is arranged in battery core connection, BMU control unit, and function is single battery voltage sampling, monocell temperature sampling, charge and discharge electricity Stream sampling, overvoltage/undervoltage alarm and protection, high/low temperature alarm and protection, current-limiting protection, charging and discharging state control, Balance route and guarantor The parameters such as shield, SOC calculate, data store, the intelligent sorting of data, data remote.
In above-mentioned technical proposal, the charge switch and discharge switch are D.C. contactor, solid-state relay or oncontacting One kind of point switch.
In above-mentioned technical proposal, the current sample element is one of current divider or Hall sensor.
The utility model connects composition with BMU execution unit by BMU control module using multiple battery cores, may be implemented not Same capacity, different types of series connection battery core carry out it is used in parallel, make battery pack configuration it is more flexible, ensure that battery strings module it Between be independent of each other and can put into and exit at any time battery pack, can individually repair if there is problem or directly replace, no It will affect any use, slow down the speed of course continuation mileage decaying, make electric car operation more secure and reliable, reached maintenance letter Folk prescription just, the purpose of charging modes flexibly and fast, substantially increase vehicle service life, at the same also have good economic benefit and Social benefit.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is utility model BMU execution unit structural schematic diagram.
Fig. 2 is the structural representation schematic diagram of utility model battery strings module.
Fig. 3 is the structural schematic diagram of two groups of battery strings wired in parallel in utility model embodiment.
Wherein: BMU execution unit 1, series connection battery core 2, incoming end 3 in parallel, current sample element 4, BMU control module 5, electricity Core 6, non-return diode 7, charge switch 8, discharge switch 9.
Specific embodiment
Below in conjunction with the attached drawing of the utility model, the technical solution of the utility model is clearly and completely described, Obviously, the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.It is practical based on this Embodiment in novel, every other reality obtained by those of ordinary skill in the art without making creative efforts Example is applied, is fallen within the protection scope of the utility model.
Battery strings mould according to Fig. 1 to Fig. 3, as a kind of electric automobile power battery system shown in embodiment Block, BMU control module and the incoming end in parallel of sequential connection, BMU execution unit, series connection battery core, simultaneously including CAN bus is arranged Join incoming end.
BMU execution unit includes connecting again with current sample element after charge control module and control of discharge wired in parallel, Charge control module is made of non-return diode connection charge switch, and control of discharge module connects discharge switch by non-return diode Composition.
BMU control unit is connect with the battery core of the current sample element of BMU execution unit and battery core of connecting respectively, series electrical Core includes that at least two battery cores are connected in series, and the CAN bus of BMU control unit setting is the master for completing control and protection movement Unit is wanted, data are uploaded to by whole group communication by CAN bus, BMU control unit function includes single battery voltage sampling, single electricity Pond temperature sampling, charging and discharging currents sampling, overvoltage/undervoltage alarm and protection, high/low temperature alarm and protection, current-limiting protection, charge and discharge shape The parameters calculating, data storage, the intelligent sorting of data, data remote etc. such as state control, Balance route and protection, SOC.
BMU control module controls charge switch, the disconnection of discharge switch and closure by current sample element to realize string Join the charge and discharge of battery core, and charge and discharge process may be implemented individually to control.
The utility model is by charge control module and two charging of control of discharge module composition, electric discharge circuits, charge control Module connects a wiring, i.e. charge switch connects charge relay, then connection charging anode；Control of discharge module connection one Wiring, i.e. discharge switch connection electric discharge relay, then connect motor anode；It is total negative by series connection battery core, sequential connection Hall After sensor and main negative relay, electrode negative is connected.
Charge switch and discharge switch effect for control charging and discharging state, can by D.C. contactor, solid-state relay or Person's noncontacting switch is realized, is determined depending on specific operating condition and actual requirement；Current sample element is current divider or hall sensing One of device is determined depending on specific operating condition and actual requirement.
The selection of battery core in battery core of connecting can flexible configuration according to actual needs, such as the battery core in every string series connection battery core Using the ferric phosphate lithium cell of same specifications and models, metatitanic acid lithium iron battery etc., battery core type and capacity must in every string series connection battery core Must be consistent, but the battery core capacity of different battery strings modules may be the same or different in same vehicle, battery variety can phase It is same to use variety classes battery according to different usage modes.
In actual use, by multiple groups battery strings module, the electric automobile power battery composed in parallel by incoming end in parallel Group, the electric energy of output is for providing the power needed in vehicle traveling process, if the wherein battery core of a certain group of battery strings module It goes wrong, will not influence the normally travel of vehicle；Any selection institute one group of battery strings module in parallel, as Multifunctional battery string Module can be used by spare series connection battery core, can and be connected to the unified use of battery pack, be can also be used as a kind of specific function The exclusive use of the power supply of (such as heating or refrigeration), while absorbing at any time and storing the input electricity generated in running car Energy.
According to Fig.3,2 groups are selected in embodiment working principle is described in detail, the battery core of every string series connection battery core is selected 104 3.65V/50Ah lithium iron phosphate dynamic batteries are sequentially connected in series, and whole group battery parameter is 379.6V/100Ah after parallel connection, Vehicle power is 37.96kWh.
In electric car docking process, two groups of battery strings modules, which are in, shelves state, due to the difference of battery strings module Property, self-discharge rate meeting different from has certain voltage difference if long term stop, in addition ties up between every group of battery strings module It is poor that battery strings module or the battery strings module newly replaced and original battery strings module after repairing also have certain voltage.If V1 > V2, V1 are the end voltage of battery strings module 1；V2 is the end voltage of battery strings module 2, due to filling for two groups of battery strings modules Electrical circuit and discharge loop are completely independent by the control of non-return diode and charge and discharge switch, so even if V1 > V2, battery strings Module 1 will not charge to battery strings module 2, and therefore, two string battery strings modules are also independent of each other when charging or shelving, electronic vapour (battery discharge) battery strings module 1 preferentially releases energy when vehicle normally travel provides traveling required power for vehicle, voltage decline When to V1=V2, two groups of battery strings modules release energy simultaneously.
In electric car normal driving process, two groups of battery strings modules provide power simultaneously, if certain in battery strings module 1 Battery core off-capacity, BMU1 control unit issue control instruction and disconnect discharge switch, battery strings module to BMU1 execution unit 1 automatically exits from system, carries out equilibrium treatment to battery core is fallen behind by BMU1 control unit, after self-regeneration success, closure electric discharge is opened Pass automatically engages in system, and self-regeneration is unsuccessful, though vehicle power only remains half and remains to continue to drive to nearest maintenace point The maintenance or the replacement of whole string for carrying out battery strings are repaired and are replaced and is safer, more convenient because battery strings module is independent mutually.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described with power Subject to the protection scope that benefit requires.

Claims (5)

1. a kind of battery strings module of electric automobile power battery system, it is characterised in that: the BMU including CAN bus is arranged Control module and the incoming end in parallel of sequential connection, BMU execution unit, series connection battery core, incoming end in parallel, the BMU execute list Member with current sample element including connecting again after charge control module and control of discharge wired in parallel, the BMU control module point Not Lian Jie BMU execution unit and series connection battery core, the series connection battery core be connected in series including at least two battery cores.
2. the battery strings module of a kind of electric automobile power battery system according to claim 1, it is characterised in that: described Charge control module is made of non-return diode connection charge switch, and the control of discharge module is connected by non-return diode discharges Switch composition.
3. the battery strings module of a kind of electric automobile power battery system according to claim 2, it is characterised in that: described Charge switch and discharge switch are one of D.C. contactor, solid-state relay or noncontacting switch.
4. a kind of battery strings module of electric automobile power battery system according to claim 1 or claim 2, it is characterised in that: The BMU control unit is connect with the battery core of the current sample element of BMU execution unit and battery core of connecting respectively.
5. the battery strings module of a kind of electric automobile power battery system according to claim 4, it is characterised in that: described Current sample element is one of current divider or Hall sensor.
CN201920164140.0U 2019-01-30 2019-01-30 A kind of battery strings module of electric automobile power battery system Active CN209592113U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920164140.0U CN209592113U (en) 2019-01-30 2019-01-30 A kind of battery strings module of electric automobile power battery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920164140.0U CN209592113U (en) 2019-01-30 2019-01-30 A kind of battery strings module of electric automobile power battery system

Publications (1)

Publication Number Publication Date
CN209592113U true CN209592113U (en) 2019-11-05

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Effective date of registration: 20200119

Address after: 150000 room 113 and 115, floor 1, building 1 (original teaching building), No.111 Songshan Road, Nangang District, Harbin City, Heilongjiang Province

Patentee after: Harbin motui Technology Co., Ltd

Address before: 150000 No. 400 Xuanhua Street, Nangang District, Harbin City, Heilongjiang Province, 6 buildings, 1 unit, 11 floors, 2 rooms

Patentee before: Ding Yuqing