CN203859565U - Detection display device for electric quantity of battery - Google Patents

Detection display device for electric quantity of battery Download PDF

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Publication number
CN203859565U
CN203859565U CN201420266899.7U CN201420266899U CN203859565U CN 203859565 U CN203859565 U CN 203859565U CN 201420266899 U CN201420266899 U CN 201420266899U CN 203859565 U CN203859565 U CN 203859565U
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electric
battery
control unit
mcu control
acquisition module
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CN201420266899.7U
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Chinese (zh)
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沈楷诚
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Wuxi Ying Nuopusi Microtronics AS
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Wuxi Ying Nuopusi Microtronics AS
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Abstract

The utility model discloses a detection display device for the electric quantity of a battery. The detection display device comprises an electric quantity acquisition module for sampling the electric quantity of the battery and a charging module for charging up the battery, the electric quantity acquisition module and the charging module are both connected with an MCU control unit, the electric quantity acquisition module outputs one or more electric signals to the MCU control unit, and the MCU control unit is connected with an indicating lamp via an Nmosfet. According to the detection display device, the electric quantity of the battery is displayed via flash frequencies or states of the indicating lamp, a plurality of indicating lamps on a power supply is not needed, the manufacturing cost of the power supply is reduced, a corresponding control circuit is simple and easy, the range of the electric quantity of the battery can be determined according to the flash frequencies of the indicating lamp, and users can understand the condition of the electric quantity of the power supply more accurately.

Description

The detection display device of battery electric quantity
Technical field
The utility model relates to electric detective technology field, especially, relates to a kind of detection display device of battery electric quantity.
Background technology
Along with the fast development of electronic technology, portable electric appts is day by day universal in our life, for example, and mobile phone, notebook computer, panel computer etc.; And the design of portable electric appts is also more and more intelligent, function is become stronger day by day; For example, can surf the Net by smart mobile phone, do shopping, navigate, watch film etc. whenever and wherever possible.Portable electric appts is in the time of these functions of operation, communication module in equipment will be lasting receiving and transmitting signal, the element such as display screen, processor is wanted continuous firing, cause the power consumption of equipment also very large, but due to the portability of portable electric appts, the size of portable electric appts has high requirement, and the capacity of the battery that portable electric appts carries is very limited, is difficult to support electronic equipment long-play.At present, the technological means addressing this problem adopts portable power source to power to electronic equipment exactly.
Portable power source is also a kind of electric weight memory device, after the electric weight of storage uses, needs the normal power supply of charging ability in time; Therefore it is particularly important that, user accurately grasps electric weight situation in portable power source.If it is inaccurate that battery electric quantity shows, user cannot normally use by connecting electronic equipment, or suddenly power-off in user's use procedure, likely causes communicating interrupt, loss of data, even more serious consequence.At present, the portable power source on market is generally to adopt LED light or display screen to indicate the electric weight situation in portable power source, adopt display screen to show that electric weight result is more directly perceived, but cost is higher; Therefore, mainstream technology is in the market generally to adopt LED light to show the electric weight situation in portable power source.The most general way arranges multiple LED light exactly on portable power source, a kind of state of charge of expression that each LED light is corresponding.For example, adopt green LED light to represent that abundant, the red LED light of electric weight in portable power source represents the charge alert in portable power source, yellow LED light represents that portable power source is in charged state etc.Adopt in this way, need to design multiple LED light on portable power source, cost is higher, is unfavorable for the market competition of product; And, control the circuit relative complex of multiple LED light, also there is larger impact for the stability of product.Simultaneously, electric weight in portable power source shows also accurately not directly perceived, for example, when what portable power source was set is 20% electric weight, alarm led indicator light is lighted, if but portable power source while only thering is 25% electric weight, alarm led indicator light cannot be made corresponding prompting, user charges to portable power source not in time, will affect use, and affects the life-span of portable power source.
Utility model content
The utility model object is to provide a kind of detection display device of battery electric quantity, and to solve in prior art, portable power source adopts multiple LED light to show state of charge, and cost is high, complex structure, and shows not problem accurately directly perceived of result.
For achieving the above object, provide a kind of detection display device of battery electric quantity according to the utility model, comprising: the electric quantity acquisition module that the electric weight of battery is sampled and the charging module that battery is charged; Electric quantity acquisition module is all connected with MCU control unit with charging module, and electric quantity acquisition module is exported one or more signals of telecommunication to MCU control unit, and MCU control unit is managed (metal-oxide layer-semiconductcor field effect transistor) by Nmosfet and connected indicator light.
Further, electric quantity acquisition module comprises three comparators, and three comparator one end connect battery, and the other end connects MCU control unit; Or electric quantity acquisition module comprises four comparators, four comparator one end connect battery, and the other end connects MCU control unit.
Further, charging module is LTC4054 integrated circuit modules.
Further, indicator light is LED light.
The utlity model has following beneficial effect:
When battery charging and discharging, the electric weight of battery can, by dodging number of times between indicator light or state shows, not be used on power supply multiple indicator lights are set, and the manufacturing cost of power supply further reduces; Meanwhile, corresponding control circuit is simple, is beneficial to the useful life that extends product, improves the stability of product; And, according to the scope of dodging number of times between indicator light and can judge battery electric quantity, visual result, user more can accurately understand the electric weight situation of power supply.
Brief description of the drawings
Below with reference to figure, the utility model is described in further detail.The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the schematic diagram one of electric quantity acquisition module in the utility model; And
Fig. 3 is the schematic diagram two of electric quantity acquisition module in the utility model.
Description of reference numerals:
101, battery; 102, electric quantity acquisition module; 103, charging module; 104, MCU control unit; 105, Nmosfet pipe; 106, LED light; 107, comparator.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
Refer to Fig. 1, preferred embodiment of the present utility model provides a kind of detection display device of battery electric quantity, comprising: the electric quantity acquisition module 102 that the electric weight of battery 101 is sampled and the charging module 103 that battery 101 is charged; Electric quantity acquisition module 102 is all connected with MCU control unit 104 with charging module 103, and electric quantity acquisition module 102 is exported one or more signals of telecommunication to MCU control unit 104, and MCU control unit 104 is managed 105 by Nmosfet and connected indicator light 106.
When the detection display device of this battery electric quantity is worked, first according to the operating state of charging module 103, MCU control unit 104 judges that battery 101 is charged state or discharge condition, battery 101 charged state MCU control units 104 are exported high level signal control indicator light 106 Chang Liang, and battery 101 discharge condition MCU control unit 104 output low level signal controlling indicator lights often go out; Then, by electric quantity acquisition module 102, the information about power of battery 101 is sampled; According to sampling electric weight, electric quantity acquisition module 102 sends one or more signals of telecommunication to MCU control unit 104, MCU control unit 104 is exported corresponding control signal according to the signal of telecommunication number of times receiving, and manage 105 by Nmosfet and drive 106 of indicator lights to dodge or short going out, user for example, just can learn the electric quantity conditions of battery 101 according to the show state of indicator light 106 (: the indicator light time of often going out dodges or normal short the going out continuously when bright of indicator light).
Refer to Fig. 2 and Fig. 3, electric quantity acquisition module 102 comprises that 107, three comparators of three comparators, 107 one end connect battery 101, and the other end connects MCU control unit 104; Or electric quantity acquisition module 102 comprises that 107, four comparators of four comparators, 107 one end connect battery 101, the other end connects MCU control unit 104.
Preferably, charging module 103 is LTC4054 integrated circuit modules, and circuit is simple, and cost is low.
Preferably, indicator light 106 adopts LED light, LED light long service life, and energy consumption is little.
Refer to Fig. 2, in the time that electric quantity acquisition module 102 is three comparators 107, under battery charging state, charging module 103 is worked, and MCU control unit 104 is exported high level signal control indicator light Chang Liang:
In the time of electric weight scope at 67%-100% of the electric weight of battery 101,3 equal output electrical signals of comparator 107 are to MCU control unit 104, and MCU control unit 104 is exported 3 control signals and managed continuous 3 short going out under the normal bright state of 105 control indicator light 106 by Nmosfet.
In the time of electric weight scope at 33%-67% of the electric weight of battery 101,2 comparator 107 output electrical signals in 3 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 2 control signals and managed continuous 2 short going out under the normal bright state of 105 control indicator light 106 by Nmosfet.
In the time of electric weight scope at 0%-33% of the electric weight of battery 101,1 comparator 107 output electrical signals in 3 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 1 control signal and managed lower 1 short the going out of the 105 control normal bright state of indicator light 106 by Nmosfet.
Under battery discharge status: charging module 103 is not worked, MCU control unit 104 output low level signal controlling indicator lights often go out:
In the time of electric weight scope at 67%-100% of the electric weight of battery 101,3 equal output electrical signals of comparator 107 are to MCU control unit 104, and MCU control unit 104 is exported 3 control signals and managed 105 by Nmosfet and control indicator lights and often go out and between continuous 3 times, dodge under state.
In the time of electric weight scope at 33%-67% of the electric weight of battery 101,2 comparator 107 output electrical signals in 3 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 2 control signals and managed 105 by Nmosfet and control indicator lights 106 and often go out and between continuous 2 times, dodge under state.
In the time of electric weight scope at 0%-33% of the electric weight of battery 101,1 comparator 107 output electrical signals in 3 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 1 control signal and managed 105 by Nmosfet and control indicator lights 106 and often go out and dodge between lower 1 time of state.
Refer to Fig. 3, in the time that electric quantity acquisition module 102 is four comparators 107, under battery charging state, charging module 103 is worked, and MCU control unit 104 is exported high level signal control indicator light Chang Liang:
In the time of electric weight scope at 75%-100% of the electric weight of battery 101,4 equal output electrical signals of comparator 107 are to MCU control unit 104, and MCU control unit 104 is exported 4 control signals and managed continuous 4 short going out under the normal bright state of 105 control indicator light 106 by Nmosfet.
In the time of electric weight scope at 50%-75% of the electric weight of battery 101,3 comparator 107 output electrical signals in 4 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 3 control signals and managed continuous 3 short going out under the normal bright state of 105 control indicator light 106 by Nmosfet.
In the time of electric weight scope at 25%-50% of the electric weight of battery 101,2 comparator 107 output electrical signals in 4 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 2 control signals and managed continuous 2 short going out under the normal bright state of 105 control indicator light 106 by Nmosfet.
The electric weight of battery 101 is in the time of the electric weight scope of 0%-25%, 1 comparator 107 output electrical signals in 4 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 1 control signal and managed continuous 1 short going out under the normal bright state of 105 control indicator light 106 by Nmosfet.
Under battery discharge status: charging module 103 is not worked, MCU control unit 104 output low level signal controlling indicator lights often go out:
The electric weight of battery 101 is in the time of the electric weight scope of 75%-100%, and 4 equal output electrical signals of comparator 107 are to MCU control unit 104, and MCU control unit 104 is exported 4 control signals and managed 105 by Nmosfet and control indicator lights and often go out and between continuous 4 times, dodge under state.
The electric weight of battery 101 is in the time of the electric weight scope of 50%-75%, 3 comparator 107 output electrical signals in 4 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 3 control signals and managed 105 by Nmosfet and control indicator lights and often go out and between continuous 3 times, dodge under state.
The electric weight of battery 101 is in the time of the electric weight scope of 25%-50%, 2 comparator 107 output electrical signals in 4 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 2 control signals and managed 105 by Nmosfet and control indicator lights and often go out and between continuous 2 times, dodge under state.
The electric weight of battery 101 is in the time of the electric weight scope of 0%-25%, 1 comparator 107 output electrical signals in 4 comparators 107 are to MCU control unit 104, and MCU control unit 104 is exported 1 control signal and managed 105 by Nmosfet and control indicator lights and often go out and between continuous 1 time, dodge under state.
In actual design process, it is comparatively preferred schemes that electric quantity acquisition module 102 is designed to 3 or 4 comparators 107, on the one hand, dodges and show that number of times and state are less between indicator light, is easy to user and remembers; On the other hand, electric weight scope is rationally interval, and the electric weight of expressing can be given the rational reference of user.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
When battery charging and discharging, the electric weight of battery can, by dodging number of times between indicator light or state shows, not be used on power supply multiple indicator lights are set, and the manufacturing cost of power supply further reduces; Meanwhile, corresponding control circuit is simple, is beneficial to the useful life that extends product, improves the stability of product; And, according to the scope of dodging number of times between indicator light and can judge battery electric quantity, visual result, user more can accurately understand the electric weight situation of power supply.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model; For a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims (4)

1. a detection display device for battery electric quantity, is characterized in that, comprising:
The electric quantity acquisition module that the electric weight of battery is sampled and the charging module that described battery is charged;
Described electric quantity acquisition module is all connected with MCU control unit with described charging module, and described electric quantity acquisition module is exported one or more signals of telecommunication to described MCU control unit, and described MCU control unit is managed and connected indicator light by Nmosfet.
2. the detection display device of battery electric quantity according to claim 1, is characterized in that:
Described electric quantity acquisition module comprises three comparators, and three described comparator one end connect described battery, and the other end connects described MCU control unit; Or described electric quantity acquisition module comprises four comparators, four described comparator one end connect described battery, and the other end connects described MCU control unit.
3. according to the detection display device of the battery electric quantity described in claim 2 any one, it is characterized in that:
Described charging module is LTC4054 integrated circuit modules.
4. according to the detection display device of the battery electric quantity described in claim 1-3 any one, it is characterized in that:
Described indicator light is LED light.
CN201420266899.7U 2014-05-23 2014-05-23 Detection display device for electric quantity of battery Active CN203859565U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publication Number Publication Date
CN203859565U true CN203859565U (en) 2014-10-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104009521A (en) * 2014-05-23 2014-08-27 无锡英诺浦斯微电子有限公司 Battery electric quantity detecting and displaying device
WO2015176554A1 (en) * 2014-05-23 2015-11-26 无锡英诺浦斯微电子有限公司 Battery power detection display method and device
CN106872903A (en) * 2017-02-22 2017-06-20 重庆长安汽车股份有限公司 Electric quantity acquisition circuit and method, battery electric quantity measuring circuit and its measuring method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104009521A (en) * 2014-05-23 2014-08-27 无锡英诺浦斯微电子有限公司 Battery electric quantity detecting and displaying device
WO2015176554A1 (en) * 2014-05-23 2015-11-26 无锡英诺浦斯微电子有限公司 Battery power detection display method and device
CN106872903A (en) * 2017-02-22 2017-06-20 重庆长安汽车股份有限公司 Electric quantity acquisition circuit and method, battery electric quantity measuring circuit and its measuring method
CN106872903B (en) * 2017-02-22 2019-09-10 重庆长安新能源汽车科技有限公司 Electric quantity acquisition circuit and method, battery capacity measuring circuit and its measurement method

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