CN105893650A - Simulation software for equalization and protection of batteries which are connected in series - Google Patents

Abstract

The invention discloses simulation software for equalization and protection of batteries which are connected in series. Four storage batteries of 12V 10-20Ah are used in an electric vehicle or a communication station at present, the storage batteries are connected in series, the service life of the storage batteries is only half a year or up to two years, therefore, the short service life and high cost of the storage batteries become the greatest problems. Moreover, the batteries are damaged in a slow time-consuming process of years and months, and therefore, the process is difficult to monitor. The invention relates to the simulation software for equalization and protection of batteries which are connected in series. According to the simulation software, the condition of each battery in the charge/discharge process of the batteries can be visually displayed in relatively short time; how the batteries are damaged in the charge/discharge process of the batteries which are connected in series can be simulated under the conditions that the balance function and protection function exist or do not exist; and the theoretical basis is provided for use of the batteries which are connected in series. The simulation software for equalization and protection of batteries which are connected in series is provided by using a graphic program language as a platform for visually displaying the monitoring data of a battery management system. The simulation software comprises a verification code module, a protection board module and an equalizing charge module.

Description

A kind of series battery balance protection simulation softwares

Technical field

At present electric motor car, communication base station are used in series 4 pieces of 12V10 ~ 20Ah storage batterys mostly, and service life, 2 years at least at most Half a year, the service life of storage battery is short, and cost height becomes maximum problem.And the damage of set of cells is the slow of time-consuming days Slow process, is therefore difficult to monitoring.Patent of the present invention relates to a kind of series battery balance protection simulation softwares, can be relatively Intuitively presenting series battery situation of each battery in charge and discharge process in short time, analog simulation series battery is filling With or without equalization function in discharge process, how to damage with or without during defencive function, the use for series battery provides theory Foundation.

Background technology

Electric bicycle/electromobile is economical and practical as one, and the walking-replacing tool of energy-conserving and environment-protective comes into countless family Front yard, is used widely.Just 200,000,000 are broken through, new units increased in production 1100 again in 2014 to China's electric bicycle recoverable amount in 2013 Many ten thousand.Due to lead-acid accumulator low cost, cost performance is high, safe and reliable, and in current electric motor car, most equipments are still It it is lead-acid accumulator.Typically, every electromobile is used in series 4 pieces of 12V10 ~ 20Ah storage batterys, and service life, 2 years the most at most Just ging wrong to half a year, the service life of storage battery is short, and cost height becomes the problem that electric bicycle is maximum.

According to the research of MGP society of Japan, it is so-called " dehydration " and " sulfuration " that electric vehicle accumulator damages more than 90% reason, and this is real It is owing to each battery behavior is inconsistent in matter, the unbalanced overcharge caused and overdischarge problem.The most any one piece of state Mark storage battery can maintain for more than 300 times the life-span of 80% capacity, actually series battery sometimes to connect monomer storage battery half with discharge and recharge Life-span less than, one piece of battery is broken whole Battery pack and cannot use, this is because be typically filled with discharge controller only detect set of cells Global voltage prevent super-charge super-discharge.But in series connection storage battery, although the electric current by monomer storage battery is identical, but due to Its capacity, internal resistance and remaining capacity can not be identical, and the depth of discharge of storage battery also can be different, federation's charge less that capacity is big Owe to put, and federation's super-charge super-discharge that capacity is little, this result in the big decay of capacity slowly, the life-span long, the decay that capacity is little accelerates, The lost of life, along with discharge and recharge number of times increases, vicious cycle, difference can be increasing, and final low capacity storage battery can be quickly invalidated Thus cause set of cells premature failure.

For a long time, owing to series connection rechargable power supplies to be existed serious super-charge super-discharge problem understanding deficiency, set of cells in addition Damage be the slow process on time-consuming days, market lacks one always and can intuitively present series connection within a short period of time Set of cells is the situation of each battery in charge and discharge process, particularly with or without equilibrium or there is set of cells in the case of unprotect Cycle life how to change, set of cells is the computer simulation emulation software how decayed, lost efficacy.Invention Electric motor car balance protection simulation softwares has filled up the blank of this application.

Summary of the invention

From the above mentioned, the purpose of this patent is to test system for existing battery management, and test method for visualizing is not enough, surveys Amount is time-consuming long, and Monitoring Data understands difficulty problem, devises a kind of series battery balance protection simulation softwares.

This software includes: authentication module, data disaply moudle, protection board module, balancing disk module.

Authentication module, by carrying out computations after obtaining the machine code of subscriber computer and hard disk code, must make new advances Identifying code carry out authentication.

Data disaply moudle, with any time electricity and the numerical value of capacity, operation in the display charging process of figure intuitively Interface is as shown in Figure 1.

Protection board module is divided into following little module, respectively parameter input module, cell voltage and electricity display mould Whether block, protection board opening module and terminator module, program flow diagram is as shown in Figure 2.

In parameter input module, input charging current, charging times, arrange initial battery capacity percentage ratio and always electricity Amount.

Cell voltage and electricity quantity display module, voltage and electricity to batteries every in series battery in charging process Amount accounts for the percentage ratio of rated capacity and shows, and is shown by the visual battery figure of visualization, allows users to more Add the charge condition observing the battery moment intuitively.

Protection board opening module, is used for showing if opening protection board, and the voltage of battery and volume percent are at battery electricity Situation in pressure display module.

Terminator module, clicks on this Modules button on panel, can rest on current charged state.

Charging interval display module, carries out the course synchronization display charging interval for defence program.

Balancing disk module is divided into following little module, respectively parameter input module, cell voltage and electricity display mould Whether block, equilibrium version opening module and terminator module, program flow diagram is as shown in Figure 3.

In parameter input module, input charging current, charging times, arrange initial battery capacity percentage ratio and always electricity Amount, euqalizing current.

Cell voltage and electricity quantity display module, voltage and electricity to batteries every in series battery in charging process Amount accounts for the percentage ratio of rated capacity and shows, and is shown by the visual battery figure of visualization, allows users to more Add the charge condition observing battery any time intuitively.

Balancing disk opening module, is used for showing if opening balancing disk, and the voltage of battery and volume percent are at battery electricity Situation in pressure display module.

Terminator module, clicks on this Modules button on panel, can rest on current charged state.

Charging interval display module, carries out the course synchronization display charging interval for equalization program.

Four, accompanying drawing explanation

Fig. 1 is operation interface schematic diagram；

Fig. 2 is that protection board designs program flow diagram；

Fig. 3 is equilibrium version design program flow diagram；

Fig. 4 be four joint capacity be the lead-acid accumulator of 10AH, electricity is respectively 0%, 50%, 0%, 50%, without equilibrium unprotect feelings Charging schematic diagram under condition；

Fig. 5 be four joint capacity be the lead-acid accumulator of 10AH, electricity is respectively 0%, 50%, 0%, 50%, without equalize protected feelings Charging schematic diagram under condition；

Fig. 6 be four joint capacity be the lead-acid accumulator of 10AH, electricity is respectively 0%, 50%, 0%, 50%, having equilibrium protected feelings Charging schematic diagram under condition；

Fig. 7 be four joint capacity be the lead-acid accumulator of 10AH, electricity is respectively 0%, 50%, 0%, 50%, having equilibrium unprotect feelings Charging schematic diagram under condition；

Fig. 8 is the lead-acid accumulator that four amount of electricity saving are 50%, and capacity is respectively 10AH, 5AH, 10AH, 5AH, is protecting without equilibrium nothing Charging schematic diagram in the case of protecting；

Fig. 9 is the lead-acid accumulator that four amount of electricity saving are 50%, and capacity is respectively 10AH, 5AH, 10AH, 5AH, is having guarantor without equilibrium Charging schematic diagram in the case of protecting；

Figure 10 is the lead-acid accumulator that four amount of electricity saving are 50%, and capacity is respectively 10AH, 5AH, 10AH, 5AH, has there being equilibrium Charging schematic diagram in the case of protection.

Five, detailed description of the invention

Using four joint capacity is the lead-acid accumulator of 10AH, and electricity is respectively 0%, 50%, 0%, 50%.Click starts to charge up button, Being charged it, in the case of without equilibrium unprotect, charging effect is as shown in Figure 4.1, No. 3 batteries are in underfill as seen from the figure Before electricity, 2, No. 4 batteries fill with, and continue charging, so cause the overcharge phenomenon of 2, No. 4 batteries, and then cause whole group of electricity The inefficacy of pond group.Open protection board functional keys, four batteries are being charged, in the case of protected without equilibrium, by Fig. 5 Visible, after 2, No. 4 batteries are fully charged, other two batteries are no longer charged, and then before solving above-mentioned unprotected plate The problem causing over-charging of battery.Open equilibrium version function, in the case of i.e. having equilibrium protected, as seen from Figure 6, four batteries electricity Reach basically identical, so can solve the problem that in set of cells, single battery overcharges.Only open equilibrium version function, have equilibrium In the case of unshielded, although charging effect is as it is shown in fig. 7, the unbalanced degree of initial capacity reaches 50%, each electricity after equilibrium Voltage and the capacity in pond are basically identical.

Using four amount of electricity saving to be the lead-acid accumulator of 50%, capacity is respectively 10AH, 5AH, 10AH, 5AH.Click starts Charge button, is charged it, and in the case of without equilibrium unprotect, charging effect is as shown in Figure 8.1, No. 3 electricity as seen from the figure Pond 2, No. 4 batteries before underfill electricity fill with, and continue charging, so cause the overcharge phenomenon of 2, No. 4 batteries, and then Cause the inefficacy of whole Battery pack group.Open protection board functional keys, then four batteries are charged, i.e. without equalizing protected feelings Under condition, as seen from Figure 9, after 2, No. 4 batteries are fully charged, other two batteries are no longer charged, so solve above-mentioned not The problem adding protection board leading cause over-charging of battery.Open equilibrium version function, in the case of having equilibrium protected, as seen from Figure 10, Four batteries electricity reach basically identical, without overcharge phenomenon, so can solve the problem that in set of cells, single battery overcharges.

Claims (6)

1. a series battery balance protection simulation softwares, it is characterised in that this system includes:

Identifying code module, for the checking to user identity；

Data disaply moudle, for the parameter according to input, at the battery electric quantity of display single battery any time；

Protection board module, calculates electricity voltage for the parameter according to input, decides whether battery is opened protection board function, and Determine the need for terminator；

Equalizaing charge module, for the parameter according to input, it may be judged whether need to open balance module, calculates electricity electricity after unlatching Pressure, equalizes.

Series battery balance protection simulation softwares the most according to claim 1, data disaply moudle is used for showing Any situation of any one batteries and the battery electric quantity under any time and charged state in set of cells.

Series battery balance protection simulation softwares the most according to claim 1, protection board module includes that data are read Taking and display module and automatic alarm module, described digital independent shows for reading and the figure of Monitoring Data with display module Show；Described automatic alarm module for cell voltage transfinite data report to the police, including play frame remind, super-charge super-discharge report to the police, automatically remember Record warning message is to data base.

Protection board module the most according to claim 3, it is also possible to display charging interval.

A kind of series battery balance protection simulation softwares the most according to claim 1, balance module includes data Reading and display module and automatic alarm module, described digital independent shows for reading and the figure of Monitoring Data with display module Show；Described automatic alarm module is used for data warning of transfiniting, and reminds including playing frame, and super-charge super-discharge is reported to the police, automatically recorded alarm signal Breath is to data base.

Balance module the most according to claim 5, it is also possible to display charging interval.