CN209119862U - A kind of cell power systems - Google Patents

A kind of cell power systems Download PDF

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Publication number
CN209119862U
CN209119862U CN201822171971.9U CN201822171971U CN209119862U CN 209119862 U CN209119862 U CN 209119862U CN 201822171971 U CN201822171971 U CN 201822171971U CN 209119862 U CN209119862 U CN 209119862U
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CN
China
Prior art keywords
battery
management system
battery modules
cell power
power systems
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Expired - Fee Related
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CN201822171971.9U
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Chinese (zh)
Inventor
钟表
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Changsha Reliance Power Supply Co Ltd
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Changsha Reliance Power Supply Co Ltd
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Priority to CN201822171971.9U priority Critical patent/CN209119862U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a kind of cell power systems, for low speed mini electric vehicle, including Battery case, battery clamp component is equipped in the Battery case, for multiple ternary lithium batteries to be assembled into battery modules, the side of the battery modules is additionally provided with precharge unit and battery management system, the battery management system is equipped with battery voltage data acquisition plate for connecting with battery modules, to acquire the voltage in battery modules charge and discharge process in real time, current data, when collected data are greater than preset threshold, the battery management system control precharge unit disconnects the connection with battery modules.The utility model has the advantages that simple and compact for structure, long service life, environmental protection and safety.

Description

A kind of cell power systems
Technical field
The utility model relates generally to lithium battery pack processing technique field, more particularly to a kind of for low speed mini electric vehicle Cell power systems.
Background technique
Along with the fast development of society, requirement of the people to the vehicles is also increasingly diversified.In recent years, national While advocating Development of EV energetically, a kind of structure is simpler, and height volume is smaller, what the suitable middle-aged and the old used, Using vehicle-mounted lead-acid battery as power, completely by rechargeable battery, the automobile for providing power source sells well market, we are commonly referred to as this Automobile is pure electric vehicle, also referred to as low speed mini electric vehicle.The characteristics of this low speed mini electric vehicle, is that speed is low, does not have tail gas Discharge, environmental pollution are smaller.But at present existing low speed mini electric vehicle dynamical system use lead-acid battery, this exist with Lower technical problem:
1. lead-acid battery is shorter there are the service life, lead-acid battery service life cycle is at 500~900 times, due to lead-acid battery Internal sulfuric acid can cause to corrode to grid, if brown lead oxide falls off, battery cycle life can be made to impact.Furthermore Lead-acid battery has some gases while charging and releases, and the active material of pole plate can be allowed to be greatly affected in this way, Falling off for active material can be directly resulted in, and positive electrode gate alloy also can be by heavy corrosion, to influence the bulk life time of battery;
2. that there are energy densities is low about in 40WH/Kg for current lead-acid battery;The battery weight by taking 72V100A lead-acid battery as an example About 220KG, battery is relatively bulky, seriously affects installation and the mileage number of low speed mini electric vehicle;
3. lead-acid accumulator is in process of production due to having used the heavy metals such as lead, cadmium, if old and useless battery treatment is improper The heavy metals such as lead, cadmium in battery can cause serious pollution to soil and groundwater.
4. lead-acid battery currently on the market is not monitored and protects to monomer, easily battery is generated in charge and discharge The problems such as super-charge super-discharge, can not accurately show present battery capacity, lead to terminal since internal battery pack is without battery management system Client's midway halting problem happens occasionally.
5. the structure setting of the dynamical system of low speed mini electric vehicle currently on the market is unreasonable, be not easy to installation and Maintenance, is not easy to radiate.
Utility model content
The technical problems to be solved in the utility model be overcome the deficiencies of the prior art and provide it is a kind of it is simple and compact for structure, The cell power systems for low speed mini electric vehicle of long service life, environmental protection and safety.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of cell power systems are used for low speed mini electric vehicle, including Battery case, are equipped with electricity in the Battery case Pond clamp assembly, for multiple ternary lithium batteries to be assembled into battery modules, the side of the battery modules is additionally provided with preliminary filling Electric unit and battery management system, the battery management system are equipped with battery voltage data acquisition plate and are used to connect with battery modules It connects, to acquire the voltage in battery modules charge and discharge process, current data in real time, when collected data are greater than preset threshold The battery management system control precharge unit disconnects the connection with battery modules.
Further, in the preferred embodiment, the precharge unit includes the main relay being connected in parallel and precharge Circuit, the pre-charge circuit include the pre-charge-relay being connected in series and pre-charge resistance, the main relay, preliminary filling Electrical relay is connect with the battery management system respectively.
Further, in the preferred embodiment, the outlet side of the battery modules is equipped with current divider and overcurrent protector, described Battery modules, current divider and overcurrent protector series connection, the current divider are also connect with battery management system for battery modules Output electric current is shunted and is supplied to battery management system.
Further, in the preferred embodiment, the battery modules by multiple 3.6V/2000mA 18650 ternary lithium batteries It is formed with series-parallel system.
Further, in the preferred embodiment, the positive and negative electrode collector aluminium foil and copper foil of the 18650 ternary lithium battery It is made, and negative electrode material is made of natural graphite.
Compared with the prior art, the advantages of the utility model are:
First is that the cell power systems of the utility model, are assembled into battery using 18650 ternary lithium dynamical batteries in series and parallel Mould group, 18650 ternary lithium dynamical battery service life cycles, even if daily one fills one and puts, can also maintain 5 up to 2000 times or so Nian Duo;The service life for greatly extending battery, is highly suitable for the use of low speed mini electric vehicle.
Second is that the cell power systems of the utility model, 18650 ternary lithium dynamical battery energy densities are about 150WH/Kg, By taking 72V/100A battery as an example, ternary lithium power battery pack weight about 65KG, weight is less than the one third of lead-acid battery, right It is of great benefit in the continuation of the journey of low speed mini electric vehicle.
Third is that the cell power systems of the utility model, by the way that battery management system is arranged, in the battery pack course of work, Battery management system can acquire the associated batteries parameter such as the voltage of each little module, electric current in battery modules in real time, prevent battery Overcharging or overdischarging phenomenon occurs.Battery condition can be provided in time simultaneously, picks out problematic battery, keep whole group electricity Pond reliability of operation and high efficiency.And the usage history archives of each battery pack can be also established automatically, the battery pack for after Accident analysis provides foundation.
Fourth is that the cell power systems of the utility model, the positive and negative electrode collector aluminium foil and copper of 18650 ternary lithium batteries Foil is made, and negative electrode material is made of natural graphite.The equal recoverable of material, it is pollution-free, compared to lead-acid battery to environment It is more friendly.
Detailed description of the invention
Fig. 1 is the plan structure schematic illustration of the cell power systems of the utility model.
Fig. 2 is the stereochemical structure schematic illustration of the cell power systems of the utility model.
Fig. 3 is the circuit theory schematic diagram of the cell power systems of the utility model.
Each label indicates in figure:
1, Battery case;10, battery management system;11, battery voltage data acquisition plate;2, communication connection head;3, battery Clamp assembly;4, battery modules;5, main relay;6, pre-charge resistance;7, pre-charge-relay;8, current divider;9, overcurrent is protected Protect device.
Specific embodiment
The utility model is described in further details below with reference to Figure of description and specific embodiment.
As shown in Figure 1, Figure 2, Figure 3 shows, the utility model provides a kind of cell power systems, is used for low speed mini electric vehicle, Battery clamp component 3 is equipped with including Battery case 1, in Battery case 1, for multiple ternary lithium batteries to be assembled into battery mould Group 4, the side of battery modules 4 are additionally provided with precharge unit and battery management system 10, and battery management system 10 is equipped with battery electricity Pressure data acquisition board 11 with battery modules 4 for connecting, to acquire voltage, the electric current in 4 charge and discharge process of battery modules in real time Data, when collected data are greater than preset threshold, battery management system 10 controls precharge unit and disconnects and battery modules 4 Connection.In the present embodiment, voltage sample module, current sampling module and temperature sampling mould are equipped in battery management system 10 Block.Precharge unit includes the main relay 5 and pre-charge circuit being connected in parallel, and pre-charge circuit includes the pre- of series connection Charge relay 7 and pre-charge resistance 6, main relay 5, pre-charge-relay 7 are connect with battery management system 10 respectively.Electricity The positive and negative attachment base of pond dynamical system is mounted on the lower right of Battery case 1.In battery charge and discharge process, battery management system 10 can acquire the associated batteries parameter such as voltage, electric current of each little module in battery modules 4 in real time, prevent battery from overcharge occurs Or over-discharge electrical phenomena.Battery condition can be provided in time simultaneously, picks out problematic battery, and keep whole group battery operation can By property and high efficiency.And the usage history archives of each battery pack can be also established automatically, battery failure analysis mentions for after For foundation.Battery modules 4 are made of the 18650 ternary lithium batteries of 1000 3.6V/2000mA with series-parallel system.In this implementation In example, battery modules 4 are divided into multiple battery groups, and every group of 18650 ternary lithium batteries by multiple 3.6V/2000mA are connected, Then in parallel between multiple battery groups.The combination of this feature makes resistance smaller, and is more convenient for installing and safeguard.
By the above special scientific design, there is following technological merit:
First is that the cell power systems of the utility model, are assembled into battery using 18650 ternary lithium dynamical batteries in series and parallel 4,18650 ternary lithium dynamical battery service life cycle of mould group, even if daily one fills one and puts, can also maintain 5 up to 2000 times or so Nian Duo;The service life for greatly extending battery, is highly suitable for the use of low speed mini electric vehicle.
Second is that the cell power systems of the utility model, 18650 ternary lithium dynamical battery energy densities are about 150WH/Kg, By taking 72V/100A battery as an example, 18650 ternary lithium power battery pack weight about 65KG, weight be less than lead-acid battery three/ One, it is of great benefit to for the continuation of the journey of low speed mini electric vehicle.
Third is that the cell power systems of the utility model, by the way that battery management system 10 is arranged, in the battery pack course of work In, battery management system 10 can acquire the associated batteries parameter such as voltage, electric current of each little module in battery modules 4 in real time, prevent Only overcharging or overdischarging phenomenon occurs for battery.Battery condition can be provided in time simultaneously, picks out problematic battery, kept The reliability and high efficiency of whole group battery operation.And the usage history archives that can also establish each battery pack automatically, after being Battery failure analysis provides foundation.
Further, in the preferred embodiment, the outlet side of battery modules 4 is equipped with current divider 8 and overcurrent protector 9, battery Mould group 4, current divider 8 and overcurrent protector 9 are connected, and current divider 8 is also connect for defeated to battery modules 4 with battery management system 10 Electric current is shunted and is supplied to battery management system 10 out.
Further, in the preferred embodiment, Battery case 1 is equipped with communication connection head 2, and 2 one end of communication connection head is used for It is connect with battery management system 10, the other end of communication connection head 2 with the display unit in electric vehicle for connecting.In battery pack In the course of work, battery management system 10 carries out the batteries relevant parameters such as voltage, the electric current of battery pack and single battery real-time Monitoring, and according to the state of these parameter accurate judgement current batteries, the indoor display unit of driving in electric vehicle is quasi- The really capacity of display present battery and corresponding exercisable mileage number, operate convenient for driver.
Further, in the preferred embodiment, the positive and negative electrode collector of 18650 ternary lithium batteries is made of aluminium foil and copper foil, And negative electrode material is made of natural graphite.The equal recoverable of material, it is pollution-free, it is more friendly to environment compared to lead-acid battery It is good.
Further, in the preferred embodiment, Battery case 1 is equipped with the first installing zone and the second installing zone arranged side by side, battery Mould group 4 is installed in the first installing zone by battery clamp component 3, and precharge unit and battery management system 10 are installed on second In installing zone.This special subregion installation, not only convenient for the only of battery modules 4, precharge unit and battery management system 10 Vertical installation and maintenance, are also convenient for the heat dissipation of device.
Although the utility model is disclosed as above with preferred embodiment, it is not intended to limit the utility model.It is any Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations Embodiment.Therefore, all contents without departing from technical solutions of the utility model, according to the utility model technical spirit to the above reality Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model protection.

Claims (5)

1. a kind of cell power systems are used for low speed mini electric vehicle, it is characterised in that: including Battery case (1), the battery Battery clamp component (3) are equipped in cabinet (1), for multiple ternary lithium batteries to be assembled into battery modules (4), the battery The side of mould group (4) is additionally provided with precharge unit and battery management system (10), and the battery management system (10) is equipped with battery Voltage data collection plate (11) with battery modules (4) for connecting, to acquire the electricity in battery modules (4) charge and discharge process in real time Pressure, current data, when collected data are greater than preset threshold, battery management system (10) the control precharge unit is disconnected It opens and the connection of battery modules (4).
2. cell power systems according to claim 1, it is characterised in that: the precharge unit includes being connected in parallel Main relay (5) and pre-charge circuit, the pre-charge circuit include the pre-charge-relay (7) being connected in series and preliminary filling Resistance (6), the main relay (5), pre-charge-relay (7) are connect with the battery management system (10) respectively.
3. cell power systems according to claim 1, it is characterised in that: the outlet side of the battery modules (4) is equipped with Current divider (8) and overcurrent protector (9), the battery modules (4), current divider (8) and overcurrent protector (9) series connection, described point Stream device (8) is also connect for being shunted to battery modules (4) output electric current and being supplied to battery with battery management system (10) Management system (10).
4. cell power systems according to claim 1, it is characterised in that: the battery modules (4) are by multiple 3.6V/ The 18650 ternary lithium batteries of 2000mA are formed with series-parallel system.
5. cell power systems according to claim 1, it is characterised in that: the positive and negative electrode of the 18650 ternary lithium battery Collector is made of aluminium foil and copper foil, and negative electrode material is made of natural graphite.
CN201822171971.9U 2018-12-24 2018-12-24 A kind of cell power systems Expired - Fee Related CN209119862U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822171971.9U CN209119862U (en) 2018-12-24 2018-12-24 A kind of cell power systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822171971.9U CN209119862U (en) 2018-12-24 2018-12-24 A kind of cell power systems

Publications (1)

Publication Number Publication Date
CN209119862U true CN209119862U (en) 2019-07-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109525019A (en) * 2018-12-24 2019-03-26 长沙安靠电源有限公司 A kind of cell power systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109525019A (en) * 2018-12-24 2019-03-26 长沙安靠电源有限公司 A kind of cell power systems

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Granted publication date: 20190716

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