CN205246835U - Lithium battery power management system based on DS2788 - Google Patents
Lithium battery power management system based on DS2788 Download PDFInfo
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- CN205246835U CN205246835U CN201521075908.5U CN201521075908U CN205246835U CN 205246835 U CN205246835 U CN 205246835U CN 201521075908 U CN201521075908 U CN 201521075908U CN 205246835 U CN205246835 U CN 205246835U
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Abstract
The utility model discloses a lithium battery power management system based on DS2788, which belongs to the technical field of power supplies, the system includes DS2788 electric quantity detection module, hall current detection module, single -chip module, LED display module and power module, DS2788 electric quantity detection module and hall current detection module connect electric quantity and the discharge current who is used for detecting the lithium cell on the lithium cell, hall current detection module connects the DS2788 module, DS2788 electric quantity detection module connects single -chip module and is used for output sense data to single -chip module, the electric quantity current data who is used for showing the lithium cell in the DS2788 module is connected to the LED display module, each electrical module that power module connects in the management system provides the electric energy support. The utility model provides a lithium battery power detecting system with high costs, the design is complicated, problem that the limitation is big has that the circuit is simple, with low costs, measuring range guangde advantage.
Description
Technical field
The utility model belongs to power technique fields, relates to electric quantity of power supply management orientation, is specifically related to a kind of electric quantity of lithium battery management system based on DS2788.
Background technology
In the face of the severe variation of global climate, pure electric automobile becomes the main direction of automobile industry future development, and the principal element that affects Development of Electric Vehicles is the lithium battery of its power source. In order to ensure safe, stable, the normally operation of electric automobile, need to carry out necessary control and management can keep good performance and to extend its service life to battery. So rationally utilizing battery is very important to electric automobile. But obtaining in time, exactly battery dump energy is the main aspect of battery being carried out to control and management. This be because battery dump energy number directly reflected the residing state of battery, can predict the continual mileage of electric automobile by it, avoid the super-charge super-discharge of battery, the inconsistency between balancing battery performance, thus ensure safety, the stable operation of electric automobile. Estimating it is extremely important so battery dump energy is carried out to real-time online, is also highly significant. How to effectively utilize the energy that how to effectively utilize battery and promoted the birth that battery electric quantity is estimated.
Present Research both at home and abroad: 1: the method for application is by monitoring that battery open circuit voltage obtains residual capacity the earliest. This is because have a definite relation between battery terminal voltage and residual capacity, measures battery terminal voltage and can estimate its residual capacity. The limitation of this method is:
1): the battery of producing for different vendor, the relation between its open-circuit voltage and capacity is different.
2): the open-circuit voltage while only having by the zero load of measurement battery could obtain relatively accurate result, the residual capacity of electrolytic cell but great majority application all needs to be in operation, the pressure drop that now load current produces in internal resistance will affect open-circuit voltage certainty of measurement. And the discreteness of the internal resistance of cell is very large, so be difficult for measuring the voltage of lithium battery.
2: and the modern electric weight algorithm for estimating of comparatively advanced point is both at home and abroad: first, automatic export function by battery data long-distance management system exports to needed battery information in Excel table, and the integrality of carrying out dealing of abnormal data, data is processed and the processing of battery charging and discharging Data classification, design the algorithm of data processing for obtaining experimental data, and experimental data has been normalized and standardization. Then, using the factor relevant with battery dump energy as input variable, battery dump energy, as output variable, is set up neural network model based on Matlab platform to battery dump energy, and network is trained with K means clustering algorithm. In order this estimation method of battery dump energy to be applied to cheaply in embedded system, apply neutral net degree of impact analytic approach herein, extract the structure that battery dump energy is affected to important input variable simplification neutral net, network is re-started to training, obtain the forecast model of battery dump energy. Finally, paper, in order to solve the dependence of K means clustering algorithm to initial value, has been studied by genetic algorithm and has been improved RBF Learning Algorithm, each RBF center and width in hidden layer has been carried out to global optimizing search, to ensure to find optimal solution. And this method implements and is not easy, and most cost is all very high, and a cover system is wanted thousands of units easily, if general application cost is too high, has extremely strong limitation.
Summary of the invention
According to above the deficiencies in the prior art, technical problem to be solved in the utility model is to propose a kind of electric quantity of lithium battery management system based on DS2788, by DS2788 electric weight detection module, Hall current detection module and one-chip computer module, utilize chip DS2788, Hall element, the voltage of MSP430 chip detection lithium battery, electric current, information about power, solve lithium battery amount detection systems cost high, design is complicated, the problem that limitation is large, there is circuit simple, cost is low, measurement category Guangde advantage, can be applied in electronic product, the each side such as electric automobile, greatly reduce traditional high accuracy electrical measurement cost, the operation very large market space that comes into the market.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of electric quantity of lithium battery management system based on DS2788, described electric quantity of lithium battery management system comprises DS2788 electric weight detection module, Hall current detection module, one-chip computer module, LED display module and power module, DS2788 electric weight detection module and Hall current detection module are connected to the electric weight and the discharge current that on lithium battery, are used for detecting lithium battery, the signal output part of Hall current detection module connects the input of DS2788 module, DS2788 electric weight detection module connects one-chip computer module and is used for output test data to one-chip computer module, LED display module is connected to the electric weight current data that is used for showing lithium battery in DS2788 module, intrasystem each electrical module of power module connection management provides electric energy support.
In said system, described electric quantity of lithium battery management system also comprises external temperature detection module, and external temperature detection module is connected to and on one-chip computer module, is used for detecting external temperature. Described electric quantity of lithium battery management system also comprises human-computer interaction module, and human-computer interaction module is connected to and on one-chip computer module, is used for inputting instruction, shows data message. In described human-computer interaction module, be provided with OLED liquid crystal display and keyboard, OLED liquid crystal display and keyboard are connected to the demonstration information that is used on one-chip computer module, input instruction. In described Hall current detection module, be provided with direct current Hall element and battery discharge current testing circuit, the input of battery discharge current testing circuit connects lithium battery, the output of battery discharge current testing circuit connects direct current Hall element, and the output of direct current Hall element connects the signal input part of DS2788 module. Described one-chip computer module adopts 12C5A60S2 chip and peripheral circuit thereof, and peripheral circuit comprises power circuit, Hall element current collection circuit, DS2788 electric quantity detecting circuit and one-chip computer module circuit. In the peripheral circuit of described one-chip computer module, also comprise crystal oscillating circuit, reset circuit, key circuit, OLED display circuit and temperature sensor circuit.
The utility model beneficial effect is: the utility model provides a kind of electric quantity of lithium battery management system based on DS2788, a kind of method that provides low cost electric quantity of lithium battery to measure, general DS2788 chip can only detect the electric weight of lithium battery mathematics when few, detect electric current generally also little, the utility model is through after improving circuit, not only can measure the battery electric quantity of number of batteries when few, can also be applied to electric automobile, some lithium battery quantity such as electric bus are many, the large application scenarios of discharge current, the difficulty that has solved traditional measurement multisection lithium battery is large, the problem that cost is high, high to battery management efficiency. traditional measurement large-current electric amount equipment cost all will exceed units up to ten thousand, and the utility model greatly reduces traditional high accuracy electrical measurement cost, the very large market space that comes into the market of going into operation.
Brief description of the drawings
Below the mark in this Figure of description expressed content and figure is briefly described:
Fig. 1 is the work structuring block diagram of the electric quantity of lithium battery management system of detailed description of the invention of the present utility model.
Fig. 2 is the DS2788 electric weight detection module circuit diagram of the management system of detailed description of the invention of the present utility model.
Fig. 3 is that the Hall current of the management system of detailed description of the invention of the present utility model detects and power module circuitry figure.
Fig. 4 is the one-chip computer module circuit diagram of the management system of detailed description of the invention of the present utility model.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, detailed description of the invention of the present utility model is as the effect of the mutual alignment between the shape of related each member, structure, each several part and annexation, each several part and operation principle, manufacturing process and operation using method etc., be described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present utility model, technical scheme.
Electric quantity of lithium battery management system based on DS2788, its structured flowchart as shown in Figure 1, electric quantity of lithium battery management system comprises DS2788 electric weight detection module, Hall current detection module, one-chip computer module, LED display module and power module, DS2788 electric weight detection module and Hall current detection module are connected to the electric weight and the discharge current that on lithium battery, are used for detecting lithium battery, the signal output part of Hall current detection module connects the input of DS2788 module, DS2788 electric weight detection module connects one-chip computer module and is used for output test data to one-chip computer module, LED display module is connected to the electric weight current data that is used for showing lithium battery in DS2788 module, intrasystem each electrical module of power module connection management provides electric energy support. electric quantity of lithium battery management system also comprises external temperature detection module and human-computer interaction module, external temperature detection module is connected to and on one-chip computer module, is used for detecting external temperature, and human-computer interaction module is connected to and on one-chip computer module, is used for inputting instruction, shows data message.
As shown in Figure 2, be DS2788 electric weight detection module circuit diagram; Fig. 3 is that Hall current detects and power module circuitry figure; Fig. 4, one-chip computer module circuit diagram.
Electric weight detects the DS2788 chip that uses Maxim, one-chip computer module adopts widely used 12C5A60S2 single-chip microcomputer, Hall current detection module adopts NBCZX7-500 direct current Hall element, man-machine interaction adopts OLED display screen and keyboard, power module uses LM78XX series voltage stabilizing chip, external temperature detection module adopts thermistor, human-computer interaction module is connected with 12C5A60S2 one-chip computer module, power module is responsible for to single-chip microcomputer, OLED also has DS2788 chip to also have Hall element power supply, one-chip computer module can be connected with DS2788 chip, computer computer can with DS2788 chip communication, DS2788 voltage detecting end is directly linked lithium battery two ends, LED display module is connected with DS2788 chip, current detecting adopts Hall element, passing to DS2788 chip by electric resistance partial pressure.
DS2788 electric weight detection module is selected the DS2788 chip of Maxim, outer voltage conversion circuit and the chip temperature testing circuit of being arranged with of DS2788 chip, voltage and the chip temperature of measurement lithium battery; The Hall element that Hall current detects and power module circuitry employing model is NBCZX7-500 detects the size of current of output, power module uses LM7805 and LM7905 chip to produce positive and negative 5V voltage, and generation voltage is single-chip microcomputer, DS2788 chip, OLED liquid crystal display and Hall element power supply; One-chip computer module adopts 12C5A60S2 chip, and its peripheral circuit comprises crystal oscillating circuit, reset circuit, key circuit, OLED display circuit and temperature sensor circuit. The voltage detecting end of DS2788 chip is directly linked lithium battery two ends, detects the voltage of lithium battery to be measured. DS2788 is used for measuring voltage, temperature and the electric current of chargeable lithium ion (Li+) battery and Li+ polymer battery, the available power of estimating battery, calculate required power brick parameter and the application parameter of electric weight and be stored in EEPROM on sheet, according to the content of electric quantity register, be reported under Current Temperatures, discharge rate, stored charge and application parameter the conservative estimation of dump energy to single-chip microcomputer. Dump energy calculates and represents with the percentage of MAH and full capacity, is presented on LED display module, facilitates staff to check at any time.
The utility model detects lithium battery discharge current by Hall current detection module, in Hall current detection module, be provided with NBCZX7-500 direct current Hall element and battery discharge current testing circuit, the input of battery discharge current testing circuit connects lithium battery, the output of battery discharge current testing circuit connects direct current Hall element, and direct current Hall element obtains the signal input part that output connects DS2788 module. Hall element can detect the electric current that is greater than 500A, can be applied to electric motor car, electric automobile, electric bus, electric yacht etc., and traditional measurement large-current electric amount equipment cost all will exceed units up to ten thousand, this product adopts novel method, greatly cost-saving, has good market.
One-chip computer module adopts 12C5A60S2 chip, 12C5A60S2 chip reads DS2788 register value, register value is shown with the OLED liquid crystal display in human-computer interaction module, and the responsible whole system of controlling, the peripheral circuit of one-chip computer module comprises crystal oscillating circuit, reset circuit, power circuit, Hall current Acquisition Circuit, DS2788 electric quantity detecting circuit and one-chip computer module circuit.
Human-computer interaction module is connected on one-chip computer module, shows information according to the instruction of one-chip computer module, is provided with OLED liquid crystal display and keyboard in human-computer interaction module, and OLED liquid crystal display and keyboard are connected to and on one-chip computer module, are used for demonstration information, input instruction. LCDs is used for showing discharge current, battery terminal voltage, electric quantity of lithium battery relative percentage, absolute dump energy, chip temperature, external temperature, keyboard is mainly to activate 5 LED of DS2788 to show roughly electric weight, also can be used for Query Information, send instruction. External temperature detection module, is connected on one-chip computer module, mainly adopts thermistor, by electric resistance partial pressure, imports signal into single-chip microcomputer, is used for detecting external temperature, and testing result is presented on human-computer interaction module.
Electric quantity of lithium battery management system can also connect computer, computer is connected to and on one-chip computer module, is used for receiving system and detects information and preserve information, query history information, computer can long-range mail message, data are carried out to preservation, the complex analyses of long-term time, also can keeping track of history information, facilitate query history information, call correction data.
Power module adopts the voltage stabilizing chip of LM78XX series, offers the supply voltage of one-chip computer module and DS2788 chip, ensures the burning voltage of one-chip computer module and DS2788 module, offers the Hall sensor module power supply support in system simultaneously.
Electric quantity of lithium battery management system in the utility model, entirety is the design based on DS2788 chip, in conjunction with Hall current detection module, one-chip computer module, LED display module, external temperature detection module, human-computer interaction module and power module, form complete electric quantity of lithium battery management system, can be applied in general electronic products, can also be applied in electric motor car, electric automobile, above electric bus etc., the management system current measuring range that the utility model provides is greater than 400A, voltage measurement scope can be according to the regulation of electrical circuit, electric weight percentages show minimum resolution is 1%, definitely electric weight resolution ratio is 1/1000 of maximum definitely electric weight, temperature detection scope is between-20～100 DEG C, temperature resolution is 1 DEG C, can be suitable for the lithium battery management orientation in electronic market.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model. Protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (7)
1. the electric quantity of lithium battery management system based on DS2788, is characterized in that, described electric quantity of lithium battery managementSystem comprises that DS2788 electric weight detection module, Hall current detection module, one-chip computer module, LED showModule and power module, DS2788 electric weight detection module and Hall current detection module are connected on lithium batteryBe used for detecting electric weight and the discharge current of lithium battery, the signal output part of Hall current detection module connectsThe input of DS2788 module, DS2788 electric weight detection module connects one-chip computer module and is used for output detections numberAccording to arriving one-chip computer module, LED display module is connected to the electric weight that is used for showing lithium battery in DS2788 moduleCurrent data, intrasystem each electrical module of power module connection management provides electric energy support.
2. the electric quantity of lithium battery management system based on DS2788 according to claim 1, is characterized in that instituteState electric quantity of lithium battery management system and also comprise external temperature detection module, external temperature detection module is connected toOn one-chip computer module, be used for detecting external temperature.
3. the electric quantity of lithium battery management system based on DS2788 according to claim 1, is characterized in that instituteState electric quantity of lithium battery management system and also comprise human-computer interaction module, human-computer interaction module is connected to single-chip microcomputer mouldOn piece, be used for inputting instruction, show data message.
4. the electric quantity of lithium battery management system based on DS2788 according to claim 3, is characterized in that instituteState in human-computer interaction module and be provided with OLED liquid crystal display and keyboard, OLED liquid crystal display and keyboard are connected to monolithicIn machine module, be used for demonstration information, input instruction.
5. the electric quantity of lithium battery management system based on DS2788 according to claim 1, is characterized in that instituteState and in Hall current detection module, be provided with direct current Hall element and battery discharge current testing circuit, batteryThe input of discharge current testing circuit connects lithium battery, and the output of battery discharge current testing circuit connectsConnect direct current Hall element, the output of direct current Hall element connects the signal input part of DS2788 module.
6. the electric quantity of lithium battery management system based on DS2788 according to claim 1, is characterized in that instituteState one-chip computer module and adopt 12C5A60S2 chip and peripheral circuit thereof, peripheral circuit comprises power circuit,Hall element current collection circuit, DS2788 electric quantity detecting circuit and one-chip computer module circuit.
7. the electric quantity of lithium battery management system based on DS2788 according to claim 1, is characterized in that instituteState and in the peripheral circuit of one-chip computer module, also comprise that crystal oscillating circuit, reset circuit, key circuit, OLED are aobviousShow circuit and temperature sensor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201521075908.5U CN205246835U (en) | 2015-12-18 | 2015-12-18 | Lithium battery power management system based on DS2788 |
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| CN201521075908.5U CN205246835U (en) | 2015-12-18 | 2015-12-18 | Lithium battery power management system based on DS2788 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086628A (en) * | 2017-05-22 | 2017-08-22 | 安徽师范大学 | It is a kind of that system is protected by light-coupled isolation software and hardware cooperating novel lithium battery group |
| CN110687452A (en) * | 2019-09-05 | 2020-01-14 | 南京理工大学 | Lithium battery capacity online prediction method based on K-means clustering and Elman neural network |
| CN116910637A (en) * | 2023-04-03 | 2023-10-20 | 山东科技大学 | Improved IGA-RBF neural network-based short-term load prediction method |
| CN116910637B (en) * | 2023-04-03 | 2024-04-26 | 山东科技大学 | Improved IGA-RBF neural network-based short-term load prediction method |
-
2015
- 2015-12-18 CN CN201521075908.5U patent/CN205246835U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086628A (en) * | 2017-05-22 | 2017-08-22 | 安徽师范大学 | It is a kind of that system is protected by light-coupled isolation software and hardware cooperating novel lithium battery group |
| CN110687452A (en) * | 2019-09-05 | 2020-01-14 | 南京理工大学 | Lithium battery capacity online prediction method based on K-means clustering and Elman neural network |
| CN110687452B (en) * | 2019-09-05 | 2022-05-20 | 南京理工大学 | Lithium battery capacity online prediction method based on K-means clustering and Elman neural network |
| CN116910637A (en) * | 2023-04-03 | 2023-10-20 | 山东科技大学 | Improved IGA-RBF neural network-based short-term load prediction method |
| CN116910637B (en) * | 2023-04-03 | 2024-04-26 | 山东科技大学 | Improved IGA-RBF neural network-based short-term load prediction method |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20181218 |