CN202712932U - LCD mobile power supply - Google Patents

LCD mobile power supply Download PDF

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Publication number
CN202712932U
CN202712932U CN 201220413236 CN201220413236U CN202712932U CN 202712932 U CN202712932 U CN 202712932U CN 201220413236 CN201220413236 CN 201220413236 CN 201220413236 U CN201220413236 U CN 201220413236U CN 202712932 U CN202712932 U CN 202712932U
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lithium battery
poly
module
power source
lcd
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CN 201220413236
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Chinese (zh)
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李琳
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Abstract

The utility model relates to an LCD mobile power supply which comprises a polymer lithium battery, a power supply management unit, a first USB interface, a single-chip microcomputer detecting and controlling unit, an adjustment unit, and a second USB interface. The power supply management unit is connected with the polymer lithium battery and manages charging of the polymer lithium battery; the input terminal of the power supply management unit is connected with the first USB interface which provides charging input voltage for the power supply management unit; the single-chip microcomputer detecting and controlling unit is used for detecting the voltage and the current of the polymer lithium battery and controlling the polymer lithium battery; the adjustment unit is used for boosting the voltage of the polymer lithium battery so that the polymer lithium battery can input voltage to power supplies of mobile electronic products; and the second USB interface is connected with the adjustment unit and outputs the voltage converted by the adjustment unit. The LCD mobile power supply has the advantages of wide application range, good development prospects, and more convenient usage, wherein a user can use the LCD mobile power supply to conveniently charge mobile electronic products.

Description

A kind of LCD shows portable power source
Technical field
The utility model relates to the electronic circuit technology field, more particularly, relates to a kind of LCD and shows portable power source.
Background technology
Along with the development of science and technology, a large amount of mobile electronic products occur in succession, and wherein, MP3, MP4, MP5, mobile phone, panel computer, digital camera etc. are used comparatively extensive in daily life.Because digital electronic product moves towards intelligent now comprehensively; almost be touch-screen entirely such as the smart mobile phone display screen; background application software is many again; power consumption is naturally just large, and product is attractive in appearance for pursuing, and all is designed to extra-thin outward appearance; so the machine often not enough situation can occur from charged pool; the general intelligence battery of mobile phone can only be with about one day electric weight, becomes all will to cell-phone charging, use inconvenience every day.As the audiovisual digital electronic product in use suddenly electric weight stop not, will cause to user's life great inconvenience.In addition, in these electronic products, mostly adopt the alternating current charging pattern, and for different electronic products, also correspondingly need the charger of different size, if the user goes out also can cause great inconvenience with the charger of upper different size.
The utility model content
The technical problems to be solved in the utility model is, the easy deficiency of electric weight, awkward defective for the ultrathin electronic products of prior art provide a kind of high, easy to use a kind of LCD of electric weight of slimming to show portable power source.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of LCD and show portable power source, comprise poly-lithium battery; Be connected with described poly-lithium battery and it is carried out the Power Management Unit of Charge Management; Be connected the first USB interface that it is provided the charging input voltage with described Power Management Unit input; Detect and control unit for detection of the voltage of described poly-lithium battery, electric current and to the single-chip microcomputer of its control; Be used for the voltage of described poly-lithium battery is boosted, is the adjustment unit of mobile electronic product power input voltage; Be connected with described adjustment unit and with the secondary USB interface of the Voltage-output after the described adjustment unit conversion.
Show in the portable power source at LCD described in the utility model, also comprise be used to the display driver unit that shows and be electrically connected with described single-chip microcomputer detection and control unit.
Show that at LCD described in the utility model described display driver unit comprises slot interface in the portable power source; Be used for showing with numeral or graphic form the display module of described polymer lithium cell electric amount; Be connected with described slot interface, be used for the key switch when described poly-lithium battery does not discharge and recharge, described display module is shown; Be used for driving the display driver chip that described display module shows, described display driver chip one input is connected with described slot interface, and output is connected with display module.
Show that at LCD described in the utility model described display module comprises LCD display in the portable power source.
Show that at LCD described in the utility model described Power Management Unit comprises the charging chip that makes charging voltage be fixed on 4.2V in the portable power source, described charging chip also is connected with the resistance that charging current is set.
Show in the portable power source that at LCD described in the utility model described adjustment unit comprises be used to the electric current of adjusting described poly-lithium battery makes it and mobile electronic product is suitable and the adaptation module that cuts off the power supply when electric current is excessive; Be used for the DC/DC boost module that the voltage with described poly-lithium battery boosts and is connected with described adaptation module; The output current regulation module that is connected with described DC/DC boost module and the electric current of described DC/DC boost module output is adjusted.
Show that at LCD described in the utility model the voltage range of described poly-lithium battery is 3.2V-4.2V in the portable power source; Described DC/DC boost module is converted to 5V output with the output voltage of described poly-lithium battery.
Show that at LCD described in the utility model described the first USB interface is Micro type USB input interface in the portable power source; Described secondary USB interface is A type USB output interface.
Show in the portable power source at LCD described in the utility model, also comprise with described poly-lithium battery and connect and it is carried out the protected location of overvoltage, overcurrent protection; Described protected location comprises for the first protection module of overvoltage, overcurrent protection and the second protection module; Also comprise be used to the 3rd protection module that described poly-lithium battery is charged under constant voltage, constant current state; Described the second protection module one end is connected with described the first protection module one end; the other end is connected with an end of described the 3rd protection module; the other end poly-lithium battery negative pole of described the first protection module connects, and the other end of described the 3rd protection module is connected with described poly-lithium battery is anodal.
Show in the portable power source that at LCD described in the utility model described LCD shows that portable power source also comprises shell, described shell comprises support and the cover plate that is interlocked with described support.
Implement LCD of the present utility model and show portable power source, has following beneficial effect: owing to use poly-lithium battery, have more high-energy-density, miniaturization, slimming, lightweight, high security, long circulation life and characteristics cheaply, can make arbitrary shape and size, super thin product, its unit energy has improved 50% than present general lithium ion battery, so that it is applied widely, and good development prospect; Because display module comprises LCD display, can intuitively show with numeral or graphic form battery electric quantity, and is more user-friendly; The user uses described LCD to show that portable power source can charge as mobile electronic product easily.
Description of drawings
Fig. 1 is the circuit block diagram schematic diagram that the utility model LCD shows portable power source the first embodiment;
Fig. 2 is the physical circuit schematic diagram of the first embodiment;
Fig. 3 is the built-in system structure chart of single-chip microcomputer among the first embodiment;
Fig. 4 is the cover plate figure that LCD shows portable power source among the first embodiment;
Fig. 5 is the support figure that LCD shows portable power source among the first embodiment;
Fig. 6 adds the structural representation that LCD behind the shell shows portable power source among the first embodiment;
Fig. 7 is the structural representation of traditional portable power source the first display mode;
Fig. 8 is the structural representation of traditional portable power source the second display mode;
Fig. 9 is the structural representation of traditional portable power source the 3rd display mode;
Figure 10 is the structural representation of traditional portable power source the 4th display mode;
Figure 11 is the display structure schematic diagram that LCD shows the LCD display of portable power source among the first embodiment;
Figure 12 is the display structure schematic diagram that the utility model LCD shows portable power source the second embodiment.
Mark among the figure: the 1-single-chip microcomputer detects and control unit; The 2-Power Management Unit; The 3-adjustment unit; The 31-adaptation module; The 32-DC/DC boost module; The 33-output current regulation module; The 4-protected location; 41-the first protection module; 42-the second protection module; 43-the 3rd protection module; 5-display driver unit; The S1-key switch; The CN1-slot interface; The U3-display driver chip; The 51-display module; The 6-poly-lithium battery; J1-the first USB interface; The J2-secondary USB interface; The 9-cover plate; The 10-support.
Embodiment
In order to allow those of ordinary skill in the art can understand and implement the utility model, below in conjunction with accompanying drawing the utility model embodiment is described further.
Show among portable power source the first embodiment at LCD of the present utility model, the circuit block diagram schematic diagram that this LCD shows portable power source as shown in Figure 1, Fig. 2 is the physical circuit schematic diagram that LCD shows portable power source among the first embodiment.In Fig. 1, this LCD shows that portable power source comprises: poly-lithium battery 6, Power Management Unit 2, the first USB interface J1, single-chip microcomputer detection and control unit 1, the first protection module 41, the second protection module 42, the 3rd protection module 43, adaptation module 31, DC/DC boost module 32, output current regulation module 33, secondary USB interface J2, key switch S1, slot interface CN1, display driver chip U3, display module 51; Wherein, the first protection module 41, the second protection module 42 and the 3rd protection module 43 consist of protected location 4; adaptation module 31, DC/DC boost module 32 and output current regulation module 33 consist of adjustment unit 3, and key switch S1, slot interface CN1, display driver chip U3 and display module 51 consist of display driver unit 5.Above-mentioned Power Management Unit 2 is connected with poly-lithium battery 6, and poly-lithium battery 6 is carried out Charge Management; The first USB interface J1 is connected with Power Management Unit 2 inputs, and provides the charging input voltage to Power Management Unit 2, and in this first embodiment, the first USB interface J1 is Micro type USB input interface; Single-chip microcomputer detects and control unit 1 is controlled for detection of the voltage of poly-lithium battery 6, size of current and to voltage, size of current; Protected location 4 and poly-lithium battery 6 also connect and it are carried out overvoltage, overcurrent protection; Adjustment unit 3 is used for the voltage of poly-lithium battery 6 is boosted, is the mobile electronic product power input voltage; Secondary USB interface J2 is connected with adjustment unit 3 and with the Voltage-output after adjustment unit 3 conversion.Display driver unit 5 detects with single-chip microcomputer and control unit 1 is electrically connected, and is used for showing.
Since poly-lithium battery compare with general lithium battery have the energy density height, more miniaturization, ultrathin, lightweight, long circulation life, and high security and the multiple clear superiorities such as low-cost are a kind of novel batteries.In shape, lithium polymer battery has the ultrathin feature, can cooperate the needs of various products, is made into the battery of any shape and capacity.And the unit energy of poly-lithium battery has improved 50% than present general lithium ion battery, so that it is applied widely, and good development prospect.In addition because ultrathin outward appearance is mostly pursued in the design of electronic product, in order to comply with the development of this trend, in this first embodiment, the Selection of Battery of portable power source poly-lithium battery.The normal working voltage scope of the poly-lithium battery among this first embodiment is 3.2V-4.2V.
As shown in Figure 2, Power Management Unit comprises charging chip U1, in this first embodiment, the model of charging chip U1 is TP4056, the charging voltage of charging chip U1 is fixed on 4.2V, charging chip U1 also is connected with the resistance that charging current is set, and specifically, charging current is to adopt a resistance R 5 that is connected between the setting of constant current charge electric current and charging current test side PROG pin and the ground to set.When input voltage V+ enables input CE when connecing high level greater than what LCD showed portable power source low-voltage detection threshold and charging chip U1, charging chip U1 begins poly-lithium battery 6 chargings, charged state indication end
Figure BSA00000765917300051
Output low level, the expression charging is carried out.Among Fig. 2, BT+, BT-are respectively positive pole and the negative pole of poly-lithium battery 6; If poly-lithium battery 6 voltages are lower than 3V, charging chip U1 carries out precharge with little electric current to poly-lithium battery 6.When poly-lithium battery 6 voltages surpassed 3V, charging chip U1 adopted constant current mode to poly-lithium battery 6 chargings, and charging current is determined by the 2nd pin and the resistance R between the ground 5 of charging chip U1.When poly-lithium battery 6 voltages during near 4.2V voltage, charging current reduces gradually, and charging chip U1 enters the constant voltage charge pattern.When charging current was reduced to charging end threshold value, charge cycle finished, the charged state indication end of charging chip U1
Figure BSA00000765917300052
The output high-impedance state, the indication end is finished in the battery charging
Figure BSA00000765917300053
The output electronegative potential.Here, it is 10% of constant current charge electric current that charging finishes threshold value, recharges threshold value when following when poly-lithium battery 6 voltages drop to, and automatically begins new charge cycle.When input voltage power down or input voltage were lower than poly-lithium battery 6 voltage, charging chip U1 entered the sleep pattern of low-power consumption, and the electric current that the poly-lithium battery end consumes is less than 3 μ A, thereby had increased stand-by time.Connect low level if will enable input CE, charging chip U1 stops charging.Single-chip microcomputer U4 input port PH6 in single-chip microcomputer detection and the control unit 1, band programmable pull-up resistance, the port level changes interruption, and the indication end is finished in input port PH6 and battery charging
Figure BSA00000765917300054
Connect, when charging is finished,
Figure BSA00000765917300055
Output becomes electronegative potential by high-impedance state, and corresponding input port PH6 port level changes, and at this moment single-chip microcomputer U4 interrupts, and stops poly-lithium battery 6 chargings.The input pin PH5 of single-chip microcomputer U4 is common input pin in this first embodiment, resistance R 20 one 100 ohm of pin PH5 outside serial connections, have arousal function, be connected with input V+ by resistance R 19, show that for detection of LCD whether portable power source is in charging.
In this first embodiment; the second protection module 42 1 ends are connected in series with the first protection module 41 1 ends; the second protection module 42 is that my other end is connected in series with an end of the 3rd protection module 43; the other end of the first protection module 41 is connected with poly-lithium battery negative pole BT-, and the other end of the 3rd protection module 43 is connected with the anodal BT+ of poly-lithium battery.The first protection module 41 and the second protection module 42 are used for poly-lithium battery 6 is carried out overvoltage, overcurrent protection, the first protection module 41 comprises chip U7, the second protection module 42 comprises chip U8, the model of chip U7 and U8 is S8205A, two S8205A cake core series connection, be used for the protection to the overcharging of poly-lithium battery 6, overdischarge and overcurrent, when poly-lithium battery 6 charging voltages reach 4.2V, stopping charging overcharging preventing, when poly-lithium battery 6 discharge voltages reach 3.2V, stop discharge and put preventing; Certainly, in some cases also can be only with a S8205A cake core, although this situation easily causes chip to damage when large electric current, this situation is suitable not high but to the occasion of cost sensitivity to equipment requirement.The 3rd protection module 43 chips U6 are used for poly-lithium battery 6 is charged under constant voltage, constant current state, and chip U6 is the DW01A cake core, and certainly, in some cases, chip U6 also can select the chip with identity function of other model.
In this first embodiment, the electric current that P channel depletion type metal-oxide-semiconductor Q1 in the adaptation module 31 be used for to adjust poly-lithium battery 6 makes it and mobile electronic product is suitable and cut off the power supply when electric current is excessive, in addition, metal-oxide-semiconductor Q1 carries out overtemperature protection to poly-lithium battery, when temperature surpasses certain value, the output of metal-oxide-semiconductor Q1 turn-off current is when discharge, temperature reaches 50 when spending, can Non voltage output; I/O port PH7 among the single-chip microcomputer U4, band programmable pull-up resistance, the port level change to interrupt, and I/O port PH7 links to each other by the base stage of the NPN type triode Q3 in resistance R 6 and the adaptation module 31, and I/O port PH7 woke up when digital portable power source was charged.DC/DC boost module 32 is connected with adaptation module 31, be used for the voltage of poly-lithium battery 6 is boosted, DC/DC boost module 32 is converted to 5V output with the output voltage of poly-lithium battery 6, among this first embodiment, chip U2 in the DC/DC boost module 32 is used for boosting, and the model of chip U2 is FP6297, and chip U2 self has overheat protector, temperature exceeds certain value, chip U2 auto-breaking; Output current regulation module 33 is connected with DC/DC boost module 32 and the electric current of DC/DC boost module 32 outputs is adjusted, and output current is adjusted to 2A.Secondary USB interface J2 links to each other with output current regulation module 33, and secondary USB interface J2 is A type USB output interface.
In this first embodiment, display module 51 is used for showing described polymer lithium cell electric amount with numeral or graphic form; Key switch S1 is connected with slot interface CN1, is used for display module 51 is shown; Display module 51 comprises LCD display, what Fig. 2 provided is the schematic diagram that adopts the LCD display display mode, in Fig. 2, show in digital form the electric weight of poly-lithium battery 6 by LCD display, the light on and off of the LED1 by diverse location are to show different electric weight, voltage, electric current, temperature and battery figure.
Among this first embodiment, the built-in system structure chart of single-chip microcomputer U4 as shown in Figure 3.The LCD of this first embodiment shows that portable power source also comprises shell, Fig. 4 is the cover plate figure that LCD shows movable power shell among the first embodiment, Fig. 5 is the support figure that LCD shows movable power shell among the first embodiment, and above-mentioned shell comprises support 10 and the cover plate 9 that is interlocked with support 10.Fig. 6 adds the structural representation that LCD behind the shell shows portable power source among the first embodiment, in Fig. 6, the LCD display in the display module 51 demonstrates electric weight, voltage, electric current, temperature and the battery figure of poly-lithium battery.Fig. 7, Fig. 8, Fig. 9, Figure 10 are respectively the structural representations of several display modes of traditional portable power source, from Fig. 7, Fig. 8, Fig. 9, Figure 10, find out, the tradition portable power source can only show the capacity of the lithium battery of the inside, and can not see intuitively in digital form how many capacity of lithium battery is specially, make troubles for user's use.Figure 11 is the display structure schematic diagram that LCD shows the LCD display of portable power source among the first embodiment, in Figure 11, adopt LCD display to demonstrate intuitively in digital form electric weight, voltage, electric current, temperature and the battery figure of poly-lithium battery, be convenient to user's use.
Show among portable power source the second embodiment at LCD of the present utility model, the display structure schematic diagram of this LCD demonstration portable power source the second embodiment as shown in figure 12, the difference of the second embodiment and the first embodiment is, among the second embodiment, secondary USB interface J2 comprises two A type USB output interfaces, can simultaneously to two electronic product chargings, adopt LCD display to show like this.
In a word, in the above-described embodiments, LCD shows that portable power source increases voltage detecting, battery capacity scaling function and temperature inductor in design, the voltage of battery or capacity carry out digital translation by single-chip microcomputer U4 and are connected on the display driver unit, and display driver chip can be 74HC164 or other chip drives.Display module comprises LCD display.Single-chip microcomputer U4 detects cell voltage by its power input VDD and VSS, utilize detected voltage to be converted into electric weight, drive display module by display driver chip and demonstrate electric quantity data, as showing with LCD display, then will be with the display driver chip of other models or directly with single-chip microcomputer U4 control.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (10)

1. a LCD shows portable power source, it is characterized in that, comprises poly-lithium battery; Be connected with described poly-lithium battery and it is carried out the Power Management Unit of Charge Management; Be connected the first USB interface that it is provided the charging input voltage with described Power Management Unit input; Detect and control unit for detection of the voltage of described poly-lithium battery, electric current and to the single-chip microcomputer of its control; Be used for the voltage of described poly-lithium battery is boosted, is the adjustment unit of mobile electronic product power input voltage; Be connected with described adjustment unit and with the secondary USB interface of the Voltage-output after the described adjustment unit conversion.
2. LCD according to claim 1 shows portable power source, it is characterized in that, also comprises be used to the display driver unit that shows and be electrically connected with described single-chip microcomputer detection and control unit.
3. LCD according to claim 2 shows portable power source, it is characterized in that described display driver unit comprises slot interface; Be used for showing with numeral or graphic form the display module of described polymer lithium cell electric amount; Be connected with described slot interface, be used for the key switch when described poly-lithium battery does not discharge and recharge, described display module is shown; Be used for driving the display driver chip that described display module shows, described display driver chip one input is connected with described slot interface, and output is connected with display module.
4. LCD according to claim 3 shows portable power source, it is characterized in that described display module comprises LCD display.
5. LCD according to claim 4 shows portable power source, it is characterized in that described Power Management Unit comprises the charging chip that makes charging voltage be fixed on 4.2V, and described charging chip also is connected with the resistance that charging current is set.
6. LCD according to claim 5 shows portable power source, it is characterized in that, described adjustment unit comprises be used to the electric current of adjusting described poly-lithium battery makes it and mobile electronic product is suitable and the adaptation module that cuts off the power supply when electric current is excessive; Be used for the DC/DC boost module that the voltage with described poly-lithium battery boosts and is connected with described adaptation module; The output current regulation module that is connected with described DC/DC boost module and the electric current of described DC/DC boost module output is adjusted.
7. LCD according to claim 6 shows portable power source, it is characterized in that the voltage range of described poly-lithium battery is 3.2V-4.2V; Described DC/DC boost module is converted to 5V output with the output voltage of described poly-lithium battery.
8. LCD according to claim 7 shows portable power source, it is characterized in that described the first USB interface is Micro type USB input interface; Described secondary USB interface is A type USB output interface.
9. the described LCD of any one shows portable power source according to claim 1-8, it is characterized in that, also comprises with described poly-lithium battery and connects and it is carried out the protected location of overvoltage, overcurrent protection; Described protected location comprises for the first protection module of overvoltage, overcurrent protection and the second protection module; Also comprise be used to the 3rd protection module that described poly-lithium battery is charged under constant voltage, constant current state; Described the second protection module one end is connected with described the first protection module one end; the other end is connected with an end of described the 3rd protection module; the other end poly-lithium battery negative pole of described the first protection module connects, and the other end of described the 3rd protection module is connected with described poly-lithium battery is anodal.
10. the described LCD of any one shows portable power source according to claim 1-8, it is characterized in that, described LCD shows that portable power source also comprises shell, and described shell comprises support and the cover plate that is interlocked with described support.
CN 201220413236 2012-08-20 2012-08-20 LCD mobile power supply Expired - Fee Related CN202712932U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762694A (en) * 2014-02-10 2014-04-30 北京乐动卓越科技有限公司 Intelligent mobile power source
CN105207327A (en) * 2015-10-15 2015-12-30 江苏省电力公司镇江供电公司 Portable power distribution communication terminal maintaining power source and electric quantity displaying method
CN111399578A (en) * 2020-04-22 2020-07-10 安徽华夏显示技术股份有限公司 Airborne low-voltage stabilization control circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762694A (en) * 2014-02-10 2014-04-30 北京乐动卓越科技有限公司 Intelligent mobile power source
CN105207327A (en) * 2015-10-15 2015-12-30 江苏省电力公司镇江供电公司 Portable power distribution communication terminal maintaining power source and electric quantity displaying method
CN105207327B (en) * 2015-10-15 2017-07-11 江苏省电力公司镇江供电公司 Portable power distribution communication terminal safeguards power supply and electric quantity display method
CN111399578A (en) * 2020-04-22 2020-07-10 安徽华夏显示技术股份有限公司 Airborne low-voltage stabilization control circuit

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