CN209119862U - A kind of cell power systems - Google Patents
A kind of cell power systems Download PDFInfo
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- 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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- Prior art keywords
- battery
- management system
- battery modules
- cell power
- power systems
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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
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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
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.
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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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822171971.9U Expired - Fee Related CN209119862U (en) | 2018-12-24 | 2018-12-24 | A kind of cell power systems |
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| Country | Link |
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| CN (1) | CN209119862U (en) |
Cited By (1)
| 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 |
-
2018
- 2018-12-24 CN CN201822171971.9U patent/CN209119862U/en not_active Expired - Fee Related
Cited By (1)
| 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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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190716 Termination date: 20201224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |