CN203218939U

CN203218939U - Intelligent equalizing charger

Info

Publication number: CN203218939U
Application number: CN2013202152391U
Authority: CN
Inventors: 张家书; 张品; 张家涛
Original assignee: LUOYANG GRASEN POWER TECHNOLOGY Co Ltd
Current assignee: LUOYANG GRASEN POWER TECHNOLOGY Co Ltd
Priority date: 2013-04-25
Filing date: 2013-04-25
Publication date: 2013-09-25
Anticipated expiration: 2023-04-25
Also published as: CN103904720A

Abstract

The utility model relates to an intelligent equalizing charger comprising a CPU controller, an AC/DC conversion circuit, a plurality of DC/DC conversion circuits and an auxiliary power supply circuit. The auxiliary power supply circuit is electrically connected with the AC/DC conversion circuit, a plurality of DC/DC conversion circuits and the CPU controller. The intelligent equalizing charger also comprises a battery group information acquisition circuit and a plurality of single battery information acquisition circuits. The CPU controller is connected with the AC/DC conversion circuit and the plurality of DC/DC conversion circuits. At the same time, the AC/DC conversion circuit is connected to one end of the battery group information acquisition circuit, the other end of the battery group information acquisition circuit is connected with a battery group. The plurality of DC/DC conversion circuits are connected with one end of each of the plurality of single battery information acquisition circuits, and the other end of each of the plurality of single battery information acquisition circuits is connected with a plurality of single batteries. By using the intelligent equalizing charger, the purpose of equalization charging can be achieved, the utilization ratio of the batteries is effectively improved, and the service life of the batteries is prolonged.

Description

Intelligent equalized charger

Technical field

The utility model relates to a kind of charger to charge in batteries such as lithium battery, lead-acid battery, super capacitors, particularly relates to a kind of intelligent equalized charger that can suppress the unbalanced charging of multi-section serial battery.

Background technology

As everyone knows, there is an operating voltage interval in storage battery when charging, the charging deboost is had strict requirement, in case surpass the charging deboost, will produce irreversible and influence that can't recover to battery.For the charger that uses monoblock battery, the control of charging voltage is very easy to, and is technical also very ripe.But when in a single day becoming series battery to use the polylith battery pack, want to realize that accurately control is just so uneasy to every series-connected cell, become technical a great problem now.

For meeting the market requirement, usually the polylith battery strings is unified into battery pack and uses, so as to improving operating voltage and electric current.But influenced by factors such as battery raw material quality, production technology, operating ambient temperature, even same model, same batch battery, its performance also can not be identical, comprises capacity, voltage, internal resistance, charging performance and state-of-charge etc.After these batteries are cascaded repeatedly use, difference between battery will manifest gradually, difference appears in the voltage of each battery, cause individual cell to overcharge or do not fill full, the battery pack active volume obviously reduces, even danger such as blast also may appear, these all are that the appearance of the charger of intelligent equalized charging efficiently solves this technological difficulties because the unbalanced of battery causes.

Because the unbalanced problems of bringing of above-mentioned multiple batteries series connection, the inventor is based on being engaged in rich experiences and the relevant professional knowledge that this type of research and development of products design accumulates for many years, use scientific methods, actively studied innovation, in the hope of designing a kind of novel charger, can overcome the existing multiple batteries existing unbalanced problem of charging, make it have more advance.Through continuous research and design, and through studying sample and improvement repeatedly, design the utility model that has practical value finally.

Summary of the invention

The purpose of this utility model is that a kind of intelligent equalized charger is being provided, it is by detecting charging voltage and the current information of every batteries, feed back to cpu controller and control the DC/DC change-over circuit, make voltage and the capacity of each batteries reach balanced, improve the utilance of battery capacity, prolonged the life-span of battery.

The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.A kind of intelligent equalized charger of the utility model, comprise cpu controller, AC/DC change-over circuit, a plurality of DC/DC change-over circuit and auxiliary power circuit, this auxiliary power circuit is electrically connected with AC/DC change-over circuit, a plurality of DC/DC change-over circuit and cpu controller; It also comprises: battery pack information Acquisition Circuit and a plurality of single battery information acquisition circuit; Wherein, this cpu controller is connected with AC/DC change-over circuit and a plurality of DC/DC change-over circuit; This AC/DC change-over circuit connects an end of battery pack information Acquisition Circuit simultaneously, and the other end of battery pack information Acquisition Circuit connects battery pack; A plurality of DC/DC change-over circuits connect an end of a plurality of single battery information acquisition circuits, and the other end of a plurality of single battery information acquisition circuits connects single battery

The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.

Preferable, aforesaid intelligent equalized charger, the built-in single-chip microcomputer of this AC/DC change-over circuit wherein, this single-chip microcomputer connects cpu controller and battery pack information Acquisition Circuit.

Preferable, aforesaid intelligent equalized charger, the built-in single-chip microcomputer of this DC/DC change-over circuit wherein, this single-chip microcomputer connects cpu controller and single battery information acquisition circuit.

Preferable, aforesaid intelligent equalized charger, wherein the number of this DC/DC change-over circuit, single battery information acquisition circuit and single battery is identical.

By technique scheme, the intelligent equalized charger of the utility model has following advantage and beneficial effect at least: by the utility model,

Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1 is the structural representation of the intelligent equalized charger of embodiment of the present utility model.

Embodiment

Be to reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of a kind of intelligent equalized charger, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.

Consult shown in Figure 1ly, be the structural representation of the intelligent equalized charger of embodiment of the present utility model; In an embodiment, this intelligent equalized charger comprises cpu controller 1, AC/DC change-over circuit 2,8 DC/DC change-over circuits 3, battery pack information Acquisition Circuit 4,8 single battery information acquisition circuits 4 ' and auxiliary power circuit 5.

This cpu controller 1 is core of the present utility model; The single-chip microcomputer 21 of this cpu controller 1 and AC/DC change-over circuit 2, and single-chip microcomputer 31 connections of each DC/DC change-over circuit 3, and by CAN communication, receive the electric current and voltage information of battery pack A or single battery, send control command after treatment, whether decision charges.Wherein, be provided with battery pack maximum charging voltage, battery pack maximum charging current, battery pack number, battery pack reparation voltage pressure reduction, single-unit maximum charging voltage, the maximum euqalizing current of single-unit and battery pack temperature compensation etc. in this cpu controller 1.

Before charging, according to demand, at first this cpu controller 1 is arranged.For example in the present embodiment, the battery pack number in the cpu controller 1 is set to 8, and other are similar, repeat no more.

This AC/DC change-over circuit 2 comprises input soft starting circuit 11, EMC current rectifying and wave filtering circuit 12, circuit of power factor correction 13 and transformer translation filtering circuit 14, its built-in single-chip microcomputer 21 simultaneously; This AC/DC change-over circuit 2 is connected with cpu controller 1 by single-chip microcomputer 21, this AC/DC change-over circuit 2 is electrically connected respectively with described 8 DC/DC change-over circuits 3, this AC/DC change-over circuit 2 is electrically connected with battery pack information Acquisition Circuit 4, and this battery pack information Acquisition Circuit 4 is electrically connected with whole battery group A simultaneously.

In actual applications, the alternating current of input (being conventional alternating current) is after process input soft starting circuit 11, EMC current rectifying and wave filtering circuit 12 are converted to direct current; Pass through circuit of power factor correction 13 again, by transformer translation filtering circuit 14, supply power voltage is converted to DC/DC change-over circuit 3 needed supply power voltages, and behind rectifying and wave-filtering, exports DC/DC change-over circuit 3 to; Simultaneously, the electric current and voltage information that this battery pack information Acquisition Circuit 4 is gathered battery pack A, and the electric current and voltage information of this battery pack A is stored in single-chip microcomputer 21, transfer to cpu controller 1 again, this cpu controller 1 is according to the information that receives, send control command to the single-chip microcomputer 21 of AC/DC change-over circuit 2, control AC/DC change-over circuit 2 is battery pack A charging; When this cpu controller 1 detected battery pack A and is full of electricity, this cpu controller 1 sent control command, makes AC/DC change-over circuit 2 stop to charge to battery pack A.In charging process, the output voltage of this AC/DC change-over circuit is set at the ceiling voltage of battery pack, guarantee that battery pack A does not overcharge, and the input voltage range of this DC/DC change-over circuit is wideer, receiving the power supply of this AC/DC change-over circuit more easily, but to guarantee when setting to work in the minimum and ceiling voltage at battery.

These DC/DC change-over circuit 3 built-in single-chip microcomputers 31; By single-chip microcomputer 31, this DC/DC change-over circuit 3 is connected with cpu controller 1, wherein this DC/DC change-over circuit 3 and single battery information acquisition circuit 4 ' be electrically connected this single battery information acquisition circuit 4 ' be electrically connected with single battery again.It should be noted that for simplicity of illustration, Fig. 1 only show 1 DC/DC change-over

circuit

3 and 1 single battery information acquisition circuit 4 ', but shown 8 batteries; In fact, in Fig. 1, this intelligent equalized charger also should comprise 7 DC/DC change-over circuits 3 and 7 single battery information acquisition circuits 4 ', wherein each single battery all respectively with 1 single battery information acquisition circuit 4 ' and 1 DC/DC change-over circuit be electrically connected.So in actual applications, the number of this DC/DC change-over circuit and single battery information acquisition circuit is uncertain, should be consistent with the quantity of single battery, can infinitely increase, the utility model does not limit it.

In actual applications, the output of this AC/DC change-over circuit connection battery pack is charged; DC/DC change-over circuit 3 behind the buck or boost by high frequency transformer etc., converts the DC direct current of input to single battery needed supply power voltage; Simultaneously, this 8 single battery information acquisition circuits 4 ' collection is the electric current and voltage information of corresponding single battery with it, and the electric current and voltage information of this single battery is stored in it in the single-chip microcomputer 31 of corresponding DC/DC change-over circuit 3, transfer to cpu controller 1 again; After this cpu controller 1 receives respectively this electric current and voltage information, with its contrast: when not having the pressure reduction differential pressure less than certain value between each single battery, this cpu controller 1 does not send control command; When existing pressure reduction and pressure reduction to reach certain value between each single battery, this cpu controller 1 sends control command, and to the single-chip microcomputer 31 of DC/DC change-over circuit 3, control DC/DC change-over circuit 3 is for single battery charges, thus additional pressure reduction.Certainly, in whole charging process, the number of carrying out the single battery of boost charge because of pressure reduction is dissimilar; Namely in contrast, when the voltage of 1 joint single battery during less than the voltage of other single batteries, only the single battery to this low-voltage carries out boost charge, or the voltage that has 2 joint single batteries is during less than the voltage of other single batteries, just this 2 joint single battery is carried out boost charge, by that analogy, repeat no more, do not have pressure reduction between all single batteries thereby reach.

This auxiliary power circuit 5 is electrically connected with AC/DC change-over circuit 2, DC/DC change-over circuit 3 and cpu controller 1, it will change the required stable lower direct voltage of each IC chip through the high-voltage variable behind the circuit of power factor correction 13 into, emphasis is given the core of whole charger, be cpu controller 1 power supply, as the 12V among Fig. 1.

By present embodiment, can make the output voltage of all single batteries very consistent, reach the purpose of equalizing charge, improve the utilance of battery effectively, extending battery life.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims

1. an intelligent equalized charger comprises cpu controller, AC/DC change-over circuit, a plurality of DC/DC change-over circuit and auxiliary power circuit, and this auxiliary power circuit is electrically connected with AC/DC change-over circuit, a plurality of DC/DC change-over circuit and cpu controller; It is characterized in that it also comprises: battery pack information Acquisition Circuit and a plurality of single battery information acquisition circuit;

Wherein, this cpu controller is connected with AC/DC change-over circuit and a plurality of DC/DC change-over circuit; This AC/DC change-over circuit connects an end of battery pack information Acquisition Circuit simultaneously, and the other end of battery pack information Acquisition Circuit connects battery pack; A plurality of DC/DC change-over circuits connect an end of a plurality of single battery information acquisition circuits, and the other end of a plurality of single battery information acquisition circuits connects single battery.

2. intelligent equalized charger according to claim 1 is characterized in that the wherein built-in single-chip microcomputer of this AC/DC change-over circuit, and this single-chip microcomputer connects cpu controller and battery pack information Acquisition Circuit.

3. intelligent equalized charger according to claim 1 is characterized in that the wherein built-in single-chip microcomputer of this DC/DC change-over circuit, and this single-chip microcomputer connects cpu controller and single battery information acquisition circuit.

4. intelligent equalized charger according to claim 1 is characterized in that wherein the number of this DC/DC change-over circuit, single battery information acquisition circuit and single battery is identical.