The utility model content
In view of this, technical problem to be solved in the utility model provides a kind ofly charges to a plurality of batteries simultaneously, can effectively adapt to different batteries respectively automatically, and makes things convenient for the user to know charged state and can intervene the charging system of charging process.
The purpose of this utility model is achieved through the following technical solutions:
A kind of intelligent monomer parallel operation charging system comprises: DC power supplier, at least two DC/DC modules parallel with one another, system control module, order input module and display modules;
Described DC/DC module receives the DC power supply that described DC power supplier is exported respectively, and to be converted into corresponding direct current be battery charge, comprise: be used to gather charged state collecting unit the relevant parameter of described battery charge, with the signal that is used to obtain the input of charged state collecting unit, and the charging control unit of the output of this DC/DC module being regulated control;
Described system control module receives the signal of described order input module input, and respectively with described DC/DC module swap data;
Described display module shows the data by described system control module output.
Wherein, the relevant parameter of described battery charge comprises: to charging current, charging voltage, the charging interval of battery, parameters such as the current/voltage of battery.
Adopt technique scheme, the DC/DC module of mutual parallel connection will be charged to its corresponding battery respectively, and the states such as voltage to each battery detect simultaneously, so that take corresponding charging strategy respectively, as, low current charge, constant current charge, rated load current charges, constant voltage charge, tiny stream fill regularly, tiny stream fills mode and effective respectively control battery supercharging variable quantities such as overvoltage, realize intelligent charge.In addition, owing to have described system control module, can show the charged state of each battery by described display module, simultaneously, the user also can intervene the charging process of controlling each battery by order input module input corresponding instruction, or inquires about corresponding charged state.Can realize respectively battery is set final voltage, capacity, time, carried out the function of query display and timed power on/off as, user.
Preferably, described charging control unit employing model is the miniature control unit chip of ATMEGA48V.
Further, described charging control unit also comprises: be connected with the I/O mouth of described miniature control unit chip, be used to control switching off control circuit that described DC/DC module output turn-offs.
Further, described system control module employing model is the miniature control unit chip of W78E365p.
Further, described system control module adopts serial port data line to be connected with described DC/DC module respectively.
Further, described battery is connected to described serial port data line.
Preferably, described DC power supplier adopts the alternating current-direct current reforming unit that the civil power input is converted into rated DC current output.
Further, the maximum output voltage of described DC/DC module is the specified final voltage value of connected battery.
As, the specified final voltage value of 12 volts plumbic acid maintenance-free battery is 14.7 volts.
Preferably, described display module adopts the negative display module that shows of the blue mould of 160X128LCM.
Prior art is compared advantage of the present utility model and is, the utility model can adopt as seven segmentation charging processes to come battery is charged easily.System control module, order input module and display module can be used as man-machine window, make things convenient for the user charging process to be carried out correcting process at the battery parameter of different vendor, overcome electric parameter performance inconsistent as adopt the fixed form charging can directly cause battery to recycle the shortcoming that rate descends, stopped that battery is not damaged but filled this bad phenomenon.Respectively the cell group is effectively charged, can effectively control the voltage of cell, promoted the useful life and the capacity of having guaranteed battery discharge of battery.Adopt display module can be effectively the state of battery to be shown, can carry out system parameters according to user's needs and regulate, realized human-computer dialogue, have intelligence, directly perceived, effective advantage.
The utility model is described in further detail below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 1, a kind of intelligent monomer parallel operation charging system comprises: DC power supplier 100, at least two DC/DC modules 200 parallel with one another, system control module 300, order input module 400 and display modules 500.
Wherein, described DC/DC module 200 receives the DC power supply that described DC power supplier 100 is exported respectively, and to be converted into corresponding direct current be battery 900 charging, comprise: be used to gather charged state collecting unit 210 relevant parameter of described battery 900 chargings, with the signal that is used to obtain 210 inputs of charged state collecting unit, and the charging control unit 220 of the output of this DC/DC module 200 being regulated control.
Described system control module 300 receives the signal of described order input module 400 inputs, and respectively with described DC/DC module 200 swap datas;
Described display module 500 shows the data by described system control module 300 outputs.
See also shown in Figure 2, and in conjunction with Fig. 4 physical circuit of Fig. 3, its charging process such as Fig. 5, shown in Figure 6, the concrete course of work of the utility model embodiment is as follows:
Adopt seven segmentation charging modes to guarantee the security performance and the discharge capacity of the charging of opening lead-acid battery, for plumbic acid maintenance-free battery and other battery user, can enter the User Defined pattern and carry out the setting of relevant parameter point, reach ideal battery correlated performance parameter.Its step comprises:
1, pre-current charges
During first section of seven segmentations charging, circuit as shown in Figure 3, process is shown in Figure 5 the 1st section.Its control principle is comprised in the DC/DC module 200 by shown in Figure 3, adopts the U1 of ATMEGA48V chip and the IC4 of LM393 chip, removes to control the 8th pin that adopts the KA3525 chip.When the Rech of U1 network output low level, it is user-defined initial current that whole LM393 chip loop adjustment KA3525 chip makes electric current, to carry out precharge.If the big system of the scope of regulating can revise adjusting automatically.Mainly by R52 R4 C1 U1_PWM2 carry out closed loop DAC and regulate, reach and set the current value specification.
2, constant current section realizes
During second section of seven segmentations charging, circuit as shown in Figure 3, process is shown in Figure 5 the 2nd section.Its control principle is comprised in the DC/DC module 200 by shown in Figure 3, adopts the U1 of ATMEGA48V chip and the IC4 of LM393 chip, removes to control the 8th pin that adopts the KA3525 chip.When the Rech of U1 network output high level, whole LM393 chip closed-loop is regulated and is made the current constant of KA3525 chip at lowest high-current value, User Defined rated current parameter item can not surpass this value, then should be by display module display system parameter error as being worth greater than on this.If the big system of the scope of regulating can revise adjusting automatically.Mainly by R52 R4 C1 U1_PWM2 carry out closed loop DAC and regulate, reach and set the current value specification.
3, the load current value charging realizes
Seven segmentations charge the 3rd section the time, circuit as shown in Figure 3, and process is shown in Figure 5 the 3rd section.Its control principle is by shown in Figure 3, the ATMEGA48V chip by R65 R66 dividing potential drop detecting battery both end voltage whether reach 80% constant voltage values, if do not reach above-mentioned requirements then carry out closed loop current DAC and revise to regulate, making it output current is that load current value carries out maximum power transfer conversion charging.
4, the constant voltage section realizes
Seven segmentations charge the 4th section the time, circuit as shown in Figure 3, and process is shown in Figure 5 the 4th section.Its control principle as shown in Figure 3 comprise R70 R75 KA3525 the hardware closed-loop of TB3.Remove to control the 1st pin of KA3525 chip by R70 and R75 dividing potential drop, to reach the purpose of regulating the duty ratio regulated output voltage.Can offer the ATMEGA48V chip by R65 and R66 dividing potential drop during this constant voltage parameter of User Defined mode initialization, carry out the DAC conversion by the PWM1 network and regulate the purpose that reaches setting voltage.After reaching constant voltage mode, it mainly detects the ATMEGA48V chip and is current loop, makes it correctly to forward to next mode of operation.
5, rated current timing, voltage variety, cut-ff voltage work realize
Seven segmentations charge the 5th section the time, circuit as shown in Figure 3, and process is shown in Figure 5 the 5th section.Its control principle as shown in Figure 3, comprise R52 R4 Atmea48 the closed loop current control of Ic4, this mode of operation mainly is to design for the cut-ff voltage that satisfies each manufacturer of opening lead-acid battery is not quite identical.
For reach battery can not overvoltage the purpose of charging, by software mode handling by four kinds of modes with this stage by charge condition, one, whether battery current reaches the current setting value in latter stage, if reach then think that battery has filled the full hypomere working method that directly enters.They are two years old, if electric current is not to the current setting value in latter stage, then promote the major loop output voltage, just promote the cut-ff voltage value of battery, but this magnitude of voltage also user sets up on their own, the maximum upper limit set point is no more than 2% of cut-ff voltage, plays the effect of lifting voltage, reaches cut-ff voltage and finishes 5 sections charge modes.Its three, if do not reach new cut-ff voltage, ATMEGA48V detection loop detecting cell voltage variable quantity when lifting voltage rises according to the characteristic cell voltage of battery in the unit interval and also can finish the charging in 5 stages less than rated value.Four, all do not reach the standard of complete charge as above-mentioned three kinds of conditions, system then by timing mode in the specified time by force complete charge reach the protection battery purpose.Promote the useful life of battery.
6, OFF leaves standstill realization
Seven segmentations charge the 6th section the time, circuit as shown in Figure 3, and process is shown in Figure 5 the 6th section.Its control principle as shown in Figure 3, wherein referring to R67 Q100 SW2.Under static condition, the Switch network output low level of ATMEGA48V directly disconnects the power supply of battery, makes battery be in static condition.Time of repose is 2 hours, and the user can set up the time on their own by software.After reaching time rating, time of repose changes next mode of operation over to.
7, the charging realization is kept in pulse
Seven segmentations charge the 7th section the time, circuit as shown in Figure 3, and process is shown in Figure 5 the 7th section.Pulse is kept and is repaired with to leave standstill operating circuit identical, and the ON/OFF of SW2 employing on time break-make mode forms pulse.The time of ON/OFF break-make can be designed voluntarily, and main actual parameter value is as the criterion with the characteristic value of battery, plays electricity and the effect of repairing of mending.
8, man-machine communication's implementation
In conjunction with Fig. 2 and shown in Figure 4, to reach functions such as demonstration and man-machine communication, storage and setting, serial communication data processing, its advantage is intuitive display, operability and highly versatile.
Wherein, adopt the W78E365 chip as the processing kernel that shows control, adopt 160 * 128 dot matrix display screens of wrongly written or mispronounced character of the blue end, three buttons are realized the man-machine communication, simple being suitable for.
But each stage User Defined parameter setting option is as follows:
First section: pre-charging time, current value, enable control
Second section: current value, enable control
The 3rd section: changing voltage value, rated current ratio, enable control
The 4th section: constant voltage values, enable control
The 5th section: rated current ratio, latter stage electric current, voltage variety, time 1, time 2, cut-ff voltage change ratio, enable control
The 6th section: time of repose enables control
The 7th section: ON time, OFF time, voltage, electric current, enable control.
Query Information comprises: time set inquiry, charging curve inquiry, battery capacity inquiry, charging interval inquiry etc.
System parameters is set and is comprised: wilful appear again factory's setting, system's timed power on/off function, service recorder, system password setting etc.
Make the setting of parameter by oneself by above-mentioned user, can realize the charging schematic diagram of common syllogic Fig. 6.So just can effectively charge and manage all kinds of batteries.
Described system control module 300 adopts serial port data line to be connected with described DC/DC module 200 respectively, and its communication speed is the 9.6K baud rate.
Wherein, DC power supplier 100 also can rectification about 300 volts direct current, be converted into the constant current constant voltage output of 48 volt of 18 peace.Described DC/DC module 200 in parallel becomes battery rated voltage state with 48 volts voltage transitions, and each cell voltage is carried out state-detection,
Tiny stream fills and regularly is charging time rating, and the user can set up on their own.Wherein, it is the upper voltage limit that battery is set that tiny stream fills overvoltage, when being 14.7V as the upper voltage limit of 12V battery, press the processing of battery supercharging variable quantity working method according to the battery of different vendor, reaches upper voltage limit and closes output automatically.Under the trickle pattern, close output automatically in the described battery supercharging variable quantity unit interval less than the rated voltage set point.Automatically close output less than rated current under the trickle state.Any complete charge states automatically that satisfy condition all of four kinds of working methods reach the purpose of effective protection battery, guarantee the charge/discharge capacity of battery simultaneously.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.