CN207303276U - A kind of power battery parameter acquisition system - Google Patents
A kind of power battery parameter acquisition system Download PDFInfo
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- CN207303276U CN207303276U CN201721324508.2U CN201721324508U CN207303276U CN 207303276 U CN207303276 U CN 207303276U CN 201721324508 U CN201721324508 U CN 201721324508U CN 207303276 U CN207303276 U CN 207303276U
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- parameter acquisition
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Abstract
It the utility model is related to a kind of power battery parameter acquisition system, one parameter acquisition plate is installed including each battery cell in parameter acquisition plate and master control borad battery pack, the battery parameter of the parameter acquisition plate collection battery cell, one master control borad of installation in battery pack, all parameter acquisition plates and the master control borad wireless connection.The each battery cell of the system installs a parameter acquisition plate, the battery parameter of battery cell is gathered by parameter acquisition plate, whole battery pack installs a master control borad, all parameter acquisition plates use wireless communication with master control borad, the battery parameter of collection is wirelessly transmitted to master control borad by parameter acquisition plate, it effectively prevent the security risks such as error caused by line and cable damage, cable acquisition expenses is at utmost saved at the same time, the expense that the expense that wiring produces and later period maintenance produce, cost is reduced, extends the service life of battery pack.
Description
Technical field
It the utility model is related to power battery technology field, more particularly to a kind of power battery parameter acquisition system.
Background technology
In the prior art, the monitoring of the battery parameter such as the voltage of battery cell, temperature mainly has two ways：Manual measurement
With wired automatic measurement.
Manual measurement carries out parameter measurement using universal meter, thermometer etc. to each battery mostly.Manual measurement is due to being
Manually each battery cell parameter is measured respectively, there is that time-consuming, can not the whole battery pack of synchronous acquisition monomer information, with
And artificial reading the problems such as may reporting by mistake.
Although wired automatic measurement can be with the monomer information of the whole battery pack of synchronous acquisition.But need for each battery list
Body configures independent collection conducting wire.By taking 450V battery pack commercial car as an example, a battery pack includes an acquisition module, and installs
Front end inside battery pack, main control module are installed in vehicle high-voltage electrical appliance kit, it is necessary to independent for the configuration of each battery cell
Collection conducting wire, collection conducting wire be from battery cell to acquisition module, the battery cell number that a battery pack includes is about 120
A, battery pack is about 3 meters, it is necessary to which 121 collection conducting wires, length are differed from 1 meter to 3 meters, and acquisition module and master control mould
Block uses wired connection, is usually two power cords, and two connections are 3-5 meters general.Acquisition expenses is not only considerably increased,
And production and assembly battery pack is there are wiring error, situations such as virtual connection, with the use of vehicle, there is the collection point of collection conducting wire
Come off, wire rod aging internal resistance increase the problems such as.
Utility model content
Technical problem to be solved in the utility model is in view of the deficiencies of the prior art, there is provided a kind of power battery parameter
Acquisition system, effectively overcomes the deficiency of traditional wired monitoring of battery cell parameter information.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of power battery parameter acquisition system, bag
Include parameter acquisition plate BMU and master control borad BCU；Each battery cell installs a parameter acquisition plate BMU, the parameter in battery pack
Collection plate BMU gathers the battery parameter of battery cell, and a master control borad BCU, all parameter acquisition plates are installed in battery pack
BMU and the master control borad BCU wireless connections.
The beneficial effects of the utility model are：Each battery cell installs a parameter acquisition plate in the system, and parameter is adopted
Collection plate BMU is directly installed on battery electrode, saves 1 to 3 meter of collection conducting wire, and the electricity of battery is gathered by parameter acquisition plate BMU
Pond parameter, whole battery pack install a master control borad BCU, and all parameter acquisition plate BMU and master control borad BCU is led to using wireless mode
The battery parameter of collection is wirelessly transmitted to master control borad BCU, effectively prevent error caused by line by news, parameter acquisition plate BMU
And the security risk such as cable damage, and two power cords are saved, two connections, at utmost save line by general 3 to 5 meters
The expense that the expense and later period maintenance that cable acquisition expenses, wiring produce produce, reduces cost, extends the use of battery pack
Cycle；And each parameter acquisition plate BMU gathers the parameter information of a battery cell, when event occurs in a certain parameter acquisition plate BMU
During barrier, the parameter acquisition of other battery cells is not interfered with.
Based on the above technical solutions, the utility model can also do following improvement.
Further, the parameter acquisition plate BMU includes wireless voltage temperature acquisition chip SOC, memory and voltage conditioning
Circuit；The wireless voltage temperature acquisition chip SOC is connected with the memory and the voltage modulate circuit respectively, the electricity
Modulate circuit is pressed to draw four leads, the two poles of the earth of two of which lead connecting single batteries, two other lead is connected and fixed on
The both ends of temperature sensor on the battery cell.
Using the beneficial effect of above-mentioned further scheme, the battery parameter collected (such as voltage, temperature) signal passes through
Voltage modulate circuit carries out hardware attenuation filter processing, to obtain accurate battery parameter, is then delivered to wireless voltage temperature and adopts
Collect the analog acquisition port of chip SOC, microcontroller carries out further software filtering algorithm to the battery parameter collected
Processing, is handled the battery parameter of collection by voltage modulate circuit, is obtained accurate and is adopted in wireless voltage temperature
Collect the battery parameter of chip SOC acquisition ranges, further handled easy to wireless voltage temperature acquisition chip SOC；Memory and nothing
Line voltage temperature acquisition chip SOC is communicated by SPI, and voltage acquisition algorithm, wireless voltage temperature acquisition can be stored in memory
Chip SOC realizes the collection of battery parameter by spi bus loading procedure to microcontroller, and can be by journey in memory
Sequence is configured, and idle pulley is arranged to when setting multiple-working mode, such as no transceiving data, is closed when detecting that vehicle stops
Shutdown mode is arranged to after closing, operating mode is various, and control is flexible；Wireless voltage temperature acquisition chip SOC individually calculates battery
The parameter information (such as voltage, temperature) of monomer, greatly reduces the operand of master control borad, improves the collection effect of acquisition system
Rate, and wirelessly send to master control borad, amount of wiring is greatly saved.
Further, the voltage modulate circuit includes the first operational amplifier and the second operational amplifier；First fortune
The cathode and anode of two input terminal connecting single batteries of amplifier are calculated, output terminal connects wireless voltage temperature acquisition chip
SOC；The both ends of two input terminals connection temperature sensor of second operational amplifier, output terminal connect wireless voltage temperature
Acquisition chip SOC.
Using the beneficial effect of above-mentioned further scheme, voltage conditioning is carried out by operational amplifier, can be obtained accurate
And in wireless voltage temperature acquisition chip SOC acquisition ranges battery parameter, easy to wireless voltage temperature acquisition chip SOC
Further processing.
Further, the wireless voltage temperature acquisition chip SOC includes crystal oscillator, frequency synthesizer, receives demodulation
Device, microcontroller, modulator, power amplifier and onboard antenna circuit, the crystal oscillator, frequency synthesizer, receive solution
Device is adjusted to be connected with the microcontroller, the microcontroller is connected with the modulator, and the modulator is put with the power
Big device connection, the power amplifier are connected with the onboard antenna circuit.
Using the beneficial effect of above-mentioned further scheme, microcontroller, frequency built in wireless voltage temperature acquisition chip SOC
Synthesizer, receive demodulator, power amplifier, crystal oscillator, modulator and onboard antenna circuit；When wireless voltage temperature is adopted
When the power port of collection chip SOC has power supply, crystal oscillator starts the clock signal that vibration produces fixed frequency, there is provided to micro-
The clock of fixed frequency clock synthesis predeterminated frequency is supplied to built-in microcontroller by controller, frequency synthesizer；Work as reception
During wireless data, air analog signal is converted into digital signal and sends microcontroller to by reception demodulator, when transmission is without line number
According to when, microcontroller sends digital signal to modulator, and modulator converts digital signals into the analog signal being wirelessly transferred,
The air analog signal increase power that power amplifier will be sent, and gone out by onboard antenna circuit transmission.Realize ginseng
Number collection plate BMU collection battery parameters, each parameter acquisition plate BMU individually calculate battery cell by the microcontroller built in it
Parameter information (such as voltage, temperature), greatly reduce the operand of master control borad, improve the collecting efficiency of acquisition system,
And when a certain parameter acquisition plate BMU breaks down, the parameter acquisition of other battery cells is not influenced, and wirelessly
Send to master control borad, amount of wiring is greatly saved.
Further, the wireless voltage temperature acquisition chip SOC is based on FSK modulation mode using ISM band and sends battery
Parameter.
Using the beneficial effect of above-mentioned further scheme, ISM band belongs to Free License, without authorization
Use.ISM band is based on FSK modulation mode, using efficient forward error correction channel technology, ensure that the accurate of measurement result
Degree.
Further, the size of the parameter acquisition plate BMU is 2cm*2cm.
Using the beneficial effect of above-mentioned further scheme, parameter acquisition plate BMU compact structures, occupy little space, can be convenient
It is installed on battery cell.
Further, the master control borad BCU includes wireless module and main control chip, and the wireless module and main control chip are electrically connected
Connect.
Using the beneficial effect of above-mentioned further scheme, master control borad BCU is equipped with wireless module and a main control chip, nothing
Wire module is communicated with main control chip by spi bus, and main control chip uses open circuit voltage method by the voltage parameter of each monomer
Battery remaining power SOC is calculated, over-pressed, under-voltage, temperature is judged according to the specifications of battery with reference to magnitude of voltage, the temperature value collected
Low or excessively high failure is spent, fault message can be reported to entire car controller in time.
Further, the wireless module is connected with main control chip by spi bus.
Brief description of the drawings
Fig. 1 is the schematic block diagram for the power battery parameter acquisition system that one embodiment of the utility model provides；
Fig. 2 is the schematic block diagram for the power battery parameter acquisition system that another embodiment of the utility model provides；
Fig. 3 is the parameter acquisition plate BMU signals for the power battery parameter acquisition system that one embodiment of the utility model provides
Property structure diagram；
Fig. 4 is that the parameter acquisition plate BMU for the power battery parameter acquisition system that another embodiment of the utility model provides shows
Meaning property structure diagram；
Fig. 5 is the wireless voltage temperature acquisition core for the power battery parameter acquisition system that one embodiment of the utility model provides
Piece SOC schematic block diagrams；
Fig. 6 is that the master control borad BCU for the power battery parameter acquisition system that another embodiment of the utility model provides is schematic
Structure diagram.
Embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
Fig. 1,2 give the utility model embodiment offer a kind of power battery parameter acquisition system schematic structure
Block diagram.As shown in Figure 1, 2, which includes parameter acquisition plate BMU and master control borad BCU；Each battery cell installation in battery pack
One parameter acquisition plate BMU, the battery parameter of the parameter acquisition plate BMU collections battery cell, battery pack one master of interior installation
Control plate BCU, all parameter acquisition plate BMU and the master control borad BCU wireless connections.
In the embodiment, each battery cell installs a parameter acquisition plate BMU, and parameter acquisition plate BMU is directly installed on
On battery electrode, 1 to 3 meter of collection conducting wire is saved, the battery parameter of battery, whole battery pack are gathered by parameter acquisition plate BMU
Installation one master control borad BCU, all parameter acquisition plate BMU and master control borad BCU use wireless communication, parameter acquisition plate BMU
The battery parameter of collection is wirelessly transmitted to master control borad BCU, effectively prevent the safety such as error caused by line and cable damage
Hidden danger, saves two power cords, two connections, at utmost save cable acquisition expenses, wiring produces by general 3 to 5 meters
Expense and later period maintenance produce expense, reduce cost, extend the service life of battery pack；And each parameter acquisition
Plate BMU gathers the parameter information of a battery cell, when a certain parameter acquisition plate BMU breaks down, does not interfere with other electricity
The parameter acquisition of pond monomer.
Preferably as the utility model one embodiment, as shown in Figure 3,4, the parameter acquisition plate BMU includes wireless
Voltage temperature acquisition chip SOC, memory and voltage modulate circuit；The wireless voltage temperature acquisition chip SOC respectively with institute
State memory to connect with the voltage modulate circuit, the voltage modulate circuit draws four leads, the connection of two of which lead
The two poles of the earth of battery cell, two other lead are connected and fixed on the both ends of the temperature sensor on the battery cell.The implementation
In example, memory can use eeprom memory.
In the embodiment, battery parameter (such as voltage, temperature) signal collected is carried out firmly by voltage modulate circuit
The processing of part attenuation filter, to obtain accurate battery parameter, the analog quantity for being then delivered to wireless voltage temperature acquisition chip SOC is adopted
Collect port, microcontroller carries out further software filtering algorithm process to the battery parameter collected, and electricity is nursed one's health by voltage
Road handles the battery parameter of collection, obtains accurate and in wireless voltage temperature acquisition chip SOC acquisition ranges
Battery parameter, is further handled easy to wireless voltage temperature acquisition chip SOC；Memory and wireless voltage temperature acquisition chip
SOC is communicated by SPI, and voltage acquisition algorithm can be stored in memory, and wireless voltage temperature acquisition chip SOC passes through spi bus
Loading procedure realizes the collection of battery parameter, and can be set a variety of by being configured to memory internal program to microcontroller
Idle pulley is arranged to during operating mode, such as no transceiving data, shutdown mode is arranged to after detecting that vehicle parking is closed,
Operating mode is various, and control is flexible；Wireless voltage temperature acquisition chip SOC individually calculates the parameter information of battery cell (such as electricity
Pressure, temperature etc.), the operand of master control borad is greatly reduced, improves the collecting efficiency of acquisition system, and is wirelessly sent out
Send to master control borad, amount of wiring is greatly saved.
Preferably, the voltage modulate circuit includes the first operational amplifier U1 and the second operational amplifier U2；Described
The cathode and anode of two input terminal connecting single batteries of one operational amplifier U1, output terminal connect wireless voltage temperature acquisition
Chip SOC；The both ends of two input terminals connection temperature sensor of the second operational amplifier U2, output terminal connection radio
Press temperature acquisition chip SOC.
Voltage conditioning is carried out by operational amplifier, can obtain accurate and be in wireless voltage temperature acquisition chip
The battery parameter of SOC acquisition ranges, is further handled easy to wireless voltage temperature acquisition chip SOC.
Preferably as the utility model one embodiment, as shown in figure 5, the wireless voltage temperature acquisition chip SOC
Including crystal oscillator, frequency synthesizer, receive demodulator, microcontroller, modulator, power amplifier and onboard antenna electricity
Road, the crystal oscillator, frequency synthesizer, reception demodulator are connected with the microcontroller, the microcontroller and institute
Modulator connection is stated, the modulator is connected with the power amplifier, the power amplifier and the onboard antenna circuit
Connection.
In the embodiment, microcontroller built in wireless voltage temperature acquisition chip SOC, frequency synthesizer, receive demodulator,
Power amplifier, crystal oscillator, modulator and onboard antenna circuit；When the power end of wireless voltage temperature acquisition chip SOC
When mouth has power supply, crystal oscillator starts the clock signal that vibration produces fixed frequency, there is provided to microcontroller, frequency synthesizer
The clock of fixed frequency clock synthesis predeterminated frequency is supplied to built-in microcontroller；When receiving wireless data, solution is received
Device is adjusted air analog signal is converted into digital signal to send microcontroller to, when sending wireless data, microcontroller is by number
Word signal sends modulator to, and modulator converts digital signals into the analog signal being wirelessly transferred, and power amplifier will be sent out
The air analog signal increase power sent, and gone out by onboard antenna circuit transmission.Realize parameter acquisition plate BMU collection electricity
Pond parameter, each battery cell install parameter acquisition plate a BMU, each parameter acquisition plate BMU and pass through the microcontroller built in it
Device individually calculates the parameter information (such as voltage, temperature) of battery cell, greatly reduces the operand of master control borad, improves and adopt
The collecting efficiency of collecting system, and when a certain parameter acquisition plate BMU breaks down, the parameter for not influencing other battery cells is adopted
Collection, and wirelessly send to master control borad, amount of wiring is greatly saved.
Preferably, wireless voltage temperature acquisition chip SOC is based on FSK modulation mode using ISM band and sends battery parameter.
ISM band belongs to Free License, can be used without authorization.ISM band is based on FSK modulation mode, using efficient
Forward error correction channel technology, ensure that the accuracy of measurement result.
Preferably, the size of parameter acquisition plate BMU is 2cm*2cm.Parameter acquisition plate BMU compact structures, occupy little space,
Convenient it can be installed on battery cell.
Preferably as the utility model one embodiment, as shown in fig. 6, the master control borad BCU include wireless module and
Main control chip, the wireless module and main control chip are electrically connected.The wireless module is connected with main control chip by spi bus.
In the embodiment, master control borad BCU is equipped with wireless module and a main control chip, wireless module lead to main control chip
Spi bus communication is crossed, main control chip calculates battery remaining power by the voltage parameter of each monomer using open circuit voltage method
SOC, judges according to the specifications of battery over-pressed, under-voltage with reference to magnitude of voltage, the temperature value collected, and temperature is too low or excessively high
Failure, can be reported to entire car controller in time by fault message.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modification, equivalent replacement, improvement and so on, should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of power battery parameter acquisition system, it is characterised in that including parameter acquisition plate BMU and master control borad BCU；Battery pack
Interior each battery cell installs parameter acquisition plate a BMU, the parameter acquisition plate BMU and gathers the battery parameter of battery cell,
Installation one master control borad BCU, all parameter acquisition plate BMU and the master control borad BCU wireless connections in battery pack.
2. system according to claim 1, it is characterised in that the parameter acquisition plate BMU is adopted including wireless voltage temperature
Collect chip SOC, memory and voltage modulate circuit；The wireless voltage temperature acquisition chip SOC respectively with the memory and
The voltage modulate circuit connection, the voltage modulate circuit draw four leads, two of which lead connecting single batteries
The two poles of the earth, two other lead are connected and fixed on the both ends of the temperature sensor on the battery cell.
3. system according to claim 2, it is characterised in that the voltage modulate circuit include the first operational amplifier and
Second operational amplifier；The cathode and anode of two input terminal connecting single batteries of first operational amplifier, output terminal
Connect wireless voltage temperature acquisition chip SOC；The two of two input terminals connection temperature sensor of second operational amplifier
End, output terminal connect wireless voltage temperature acquisition chip SOC.
4. system according to claim 2, it is characterised in that the wireless voltage temperature acquisition chip SOC includes crystal
Oscillator, frequency synthesizer, receive demodulator, microcontroller, modulator, power amplifier and onboard antenna circuit, the crystalline substance
Oscillation body device, frequency synthesizer, reception demodulator are connected with the microcontroller, and the microcontroller connects with the modulator
Connect, the modulator is connected with the power amplifier, and the power amplifier is connected with the onboard antenna circuit.
5. system according to claim 2, it is characterised in that the wireless voltage temperature acquisition chip SOC is using ISM frequencies
Section sends battery parameter based on FSK modulation mode.
6. according to claim 1-5 any one of them systems, it is characterised in that the size of the parameter acquisition plate BMU is
2cm*2cm。
7. according to claim 1-5 any one of them systems, it is characterised in that the master control borad BCU include wireless module and
Main control chip, the wireless module and main control chip are electrically connected.
8. system according to claim 7, it is characterised in that the wireless module is connected with main control chip by spi bus
Connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721324508.2U CN207303276U (en) | 2017-10-13 | 2017-10-13 | A kind of power battery parameter acquisition system |
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| CN201721324508.2U CN207303276U (en) | 2017-10-13 | 2017-10-13 | A kind of power battery parameter acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863571A (en) * | 2017-10-13 | 2018-03-30 | 常州普莱德新能源电池科技有限公司 | A kind of electrokinetic cell parameter acquisition system |
-
2017
- 2017-10-13 CN CN201721324508.2U patent/CN207303276U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863571A (en) * | 2017-10-13 | 2018-03-30 | 常州普莱德新能源电池科技有限公司 | A kind of electrokinetic cell parameter acquisition system |
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