CN201112529Y - Mobile phone spare battery - Google Patents

Mobile phone spare battery Download PDF

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Publication number
CN201112529Y
CN201112529Y CNU2007201208676U CN200720120867U CN201112529Y CN 201112529 Y CN201112529 Y CN 201112529Y CN U2007201208676 U CNU2007201208676 U CN U2007201208676U CN 200720120867 U CN200720120867 U CN 200720120867U CN 201112529 Y CN201112529 Y CN 201112529Y
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CN
China
Prior art keywords
connects
mobile phone
circuit
charging
resistance
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Expired - Fee Related
Application number
CNU2007201208676U
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Chinese (zh)
Inventor
李开名
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DONGGUAN HUIZHENG ELECTRONIC Co Ltd
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Priority to CNU2007201208676U priority Critical patent/CN201112529Y/en
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Publication of CN201112529Y publication Critical patent/CN201112529Y/en
Anticipated expiration legal-status Critical
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a mobile phone stand-by battery, which comprises a battery core and a circuit board that are interconnected, a casing for accommodating the battery core and the circuit board, and a charging input interface and a charging output joint that are connected with the battery core and the circuit board. The mobile phone stand-by battery is characterized in that the casing comprises a left lateral plate, a right lateral plate and a bottom plate connected with the left and the right lateral plates, wherein the bottom plate is provided with a hole allowing the charging output joint to pass through, and the charging output joint is a rotary joint positioned in a hollow cavity surrounded by the left and the right lateral plates and the bottom plate. The rotary joint improves the commonality of the stand-by battery with mobile equipment. Also, the mobile phone stand-by battery has multiple protecting functions in case of over-charging, over-current, over-discharging and short circuit.

Description

Standby battery of mobile phone
Technical field
The utility model relates to the parts of mobile device, more particularly, relates to a kind of standby battery of mobile phone.
Background technology
At present; personalized mobile device such as mobile phone; PDA; MP3 is more and more welcome and a large amount of popularizing because be convenient for carrying; no matter allow people can both enjoy the facility that these mobile devices bring on the road or in office or family; yet these mobile devices all need to use battery; and the capacity of current battery all is relatively limited; this just needs the additional of reserve battery could satisfy people's these mobile devices of use in the long relatively time; in the prior art; the out splice going splice of swivel joint does not possess spinfunction; this has limited the versatility of reserve battery to a great extent; simultaneously, also there is the perfect inadequately shortcoming of circuit protection in the reserve battery of prior art.
The utility model content
The purpose of this utility model is to overcome above-mentioned defective of the prior art, provides a kind of out splice going splice rotatable standby battery of mobile phone.
Another purpose of the present utility model provides a kind of standby battery of mobile phone with the protect measure improved that adopts original-pack charger charging.
The technical solution of the utility model is as follows: construct a kind of standby battery of mobile phone, comprise the body housing of interconnected electric core and circuit board, ccontaining described electric core and circuit board, the charging input interface that is connected described electric core and circuit board, charging out splice going splice, described body housing comprises left side sheet, right side sheet and connects described left side sheet and the base plate of right side sheet, described base plate has the hole that allows charging out splice going splice outer end to pass through, and described charging out splice going splice is to be positioned at the swivel joint that described left side sheet, right side sheet and base plate surround the cavity that forms.
Described swivel joint comprises contact, the middle part of fixed contact has the cylindrical swivel mount of discoid protuberance, described discoid protuberance has a semicircular breach near contact one end, discoid one week of protuberance side surface is evenly equipped with some fins, correspondingly, described left side sheet, respectively have two parallel fins on the madial wall of right side sheet and described swivel joint opposite position, distance between these two parallel fins equals the width of fin on the described discoid protuberance, big outer little round stepped hole is provided with a boss in the Kong Weiyi on the described base plate on the step surface of described round stepped hole.
Cylindrical swivel mount center has axis hole, and power line is connected with contact by described axis hole.
The end edge of described left side sheet, right side sheet homonymy respectively has half circumferential notch, article one, the end of two ends with plastic cement rope of node fixed between described two semicircle breach, and the other end of described plastic cement rope connects the plastic cement cap that has circular hole on the sidewall.
Between described charger input interface and electric core, be connected with the DC-DC reduction voltage circuit, between electric core and charging out splice going splice, be connected with the DC-DC booster circuit, be provided with switch between described electric core and DC-DC booster circuit, described charger input interface connects between the charging out splice going splice by diode.
Described DC-DC reduction voltage circuit connects the charging constant-current control circuit, and described DC-DC booster circuit connects the discharge constant-current control circuit; The negative pole of described electric core connects charger input interface and charging out splice going splice respectively by the super-charge super-discharge protective circuit, and the positive pole of electric core connects the electric protection circuit, and electric core, electric protection circuit and super-charge super-discharge protective circuit constitute the battery protection loop.
Described DC-DC reduction voltage circuit comprises single-chip microcomputer U1, inductance L 1, filter capacitor C3 and Voltage Feedback resistance R 6, R7, the power input of single-chip microcomputer U1 is connected the charger input interface, the power output end of single-chip microcomputer U1 is successively by inductance L 1 and filter capacitor C3 ground connection, Voltage Feedback resistance R 6, R7 serial connection back one end are connected between inductance L 1 and the filter capacitor C3, other end ground connection, another input of single-chip microcomputer U1 is connected between feedback resistance R6, the R7 and connects; Described charging constant-current control circuit comprises comparator U2C, resistance R 19, R8, R16, capacitor C 11, isolating diode D3, the positive input terminal of comparator U2C is by detecting resistance R 16 ground connection, the negative input end of comparator U2C is by resistance R 19 ground connection, capacitor C 11, resistance R 8 are connected in parallel on output and the negative input end of comparator U2C respectively, and the output of U2C connects single-chip microcomputer U1 by isolating diode D3.
Described DC-DC booster circuit comprises the IC U3 that boosts, metal-oxide-semiconductor field effect transistor Q3, diode D5, inductance L 2 and resistance R 13, R14, the positive source of IC U3 of boosting connects electric core positive pole by switch, resistance R 13, R14 serial connection back one end are connected the power cathode of the IC U3 that boosts, the other end is connected the positive pole of the IC U3 that boosts with inductance L 2 by diode D5, connect the charging out splice going splice between resistance R 14 and the diode D5, the grid of metal-oxide-semiconductor field effect transistor Q3 meets the IC U3 that boosts, drain electrode is connected between diode D5 and the inductance L 2, and source electrode is taken over and filled over-discharge protection circuit; Described discharge constant-current control circuit comprises comparator U2D, resistance R 15, R23, R22, capacitor C 8, isolating diode D7, the negative input end of resistance R 23, R22 serial connection back one termination comparator U2D, the other end connects charging out splice going splice and comparator U2D positive input terminal simultaneously, resistance R 15, capacitor C 8 are connected in parallel on output and the negative input end of comparator U2D respectively, and the output of U2D connects single-chip microcomputer U1 by isolating diode D7.
Described super-charge super-discharge protective circuit comprises power management IC U4 and is subjected to the metal-oxide-semiconductor field effect transistor U5 of its control break-make; the positive supply input of described power management IC U4 connects the DC-DC reduction voltage circuit; the discharge control inlet of described metal-oxide-semiconductor field effect transistor U5 connects the DC-DC booster circuit, and the charging control inlet of described metal-oxide-semiconductor field effect transistor U5 connects the DC-DC reduction voltage circuit.
Described DC-DC reduction voltage circuit is connected the charger input interface by comparator U2A, U2B with two-color diode D1 successively, is serially connected with light-emitting diode D6 on the described DC-DC booster circuit.
The beneficial effects of the utility model are: when mobile device occurs not having electricity condition, can directly this standby battery of mobile phone output plug be connected with mobile device, guarantee the continuous of conversation and use; Simultaneously, it also has swivel joint, has strengthened the versatility of itself and mobile device; Simultaneously standby battery of mobile phone also have overcharge, overcurrent, overdischarge, short circuit be at multiple protection functions such as interior.
Description of drawings
Fig. 1 is the stereogram of the utility model standby battery of mobile phone;
Fig. 2 is another stereogram of the utility model standby battery of mobile phone;
Fig. 3 is the explosive view of the utility model standby battery of mobile phone;
Fig. 4 is another explosive view of the utility model standby battery of mobile phone;
Fig. 5 is the stereogram of the utility model standby battery of mobile phone left side sheet;
Fig. 6 is the stereogram of the utility model standby battery of mobile phone noseplate;
Fig. 7 is the stereogram of the charging out splice going splice of the utility model standby battery of mobile phone;
Fig. 8 is the circuit block diagram of the utility model standby battery of mobile phone;
Fig. 9 is the circuit theory diagrams of the utility model standby battery of mobile phone
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of standby battery of mobile phone is provided, comprise body housing 1, electricity core 4 and circuit board 5, charger input interface 10, charging out splice going splice 11, body housing 1 comprises the left side sheet 2 of mutual fastening, right side sheet 3, two base plates 6 in front and back, 7, noseplate 6 has the stepped hole 19 that allows charging out splice going splice outer end to pass through, charging out splice going splice 11 is for being positioned at left side sheet 2, right side sheet 3 and base plate 6 surround the swivel joint in the cavity 25 that forms, left side sheet 2, right side sheet 3 by work in coordination be positioned at the cylinder boss 26 of left side on the sheet 2 and be positioned at right side sheet 3 on hollow cylinder boss 27 and the fastening structure at two ends be connected, also be provided with charging indicator light 12 on the epimeron 7, discharge indicator light 14 and switch 13.
With reference to Fig. 5, Fig. 6, Fig. 7, charging out splice going splice 11 comprises contact 9, the middle part of fixed contact has the cylindrical swivel mount 16 of discoid protuberance 15, discoid protuberance 15 has a semicircular breach 17 near contact 9 one ends, discoid protuberance one week of 15 side surfaces is evenly equipped with some fins 18, correspondingly, left side sheet 2, respectively have two parallel fins 20 on the madial wall of right side sheet 3 and charging out splice going splice 11 opposite positions, distance between these two parallel fins 20 equals the width of fin 18 on the discoid protuberance 15, article two, parallel fin 20 bottoms also are provided with stiffener 28, stepped hole 19 on the noseplate 6 is a big outer little round stepped hole in, is provided with a boss 22 on the step surface 21 of circle stepped hole 19.Like this, by working in coordination of fin 18 and fin 20, charging out splice going splice 11 just has a plurality of angles available, adds the restriction to semicircular breach 17 of boss 22, and charging out splice going splice 11 just can be done the round rotation of 180 degree in cavity 25.
Cylindrical swivel mount 16 centers have axis hole, and power line is connected with contact 9 by axis hole.
With reference to Fig. 3, Fig. 5; the end edge of left side sheet 2, right side sheet 3 homonymies respectively has half circumferential notch 23; article one, the end of two ends with plastic cement rope 24 of node fixed between described two semicircle breach 23; the other end of plastic cement rope 24 connects the plastic cement cap 8 that has circular hole on the sidewall, can play a protective role to charging out splice going splice 11.
With reference to Fig. 8, electricity core and circuit board 5 comprise lithium cell and circuit board, it (is Fig. 1 that the outside is provided with the charger input interface, Fig. 2, charger input interface 10 among Fig. 4), the charging out splice going splice (is Fig. 4, out splice going splice 11 charges among Fig. 7) and charging indicator light (being charging indicator light 12 among Fig. 3), between charger input interface and lithium cell, be connected with the DC-DC reduction voltage circuit, between lithium cell and charging out splice going splice, be connected with the DC-DC booster circuit, be provided with switch (being the switch 13 among Fig. 2) between described lithium cell and DC-DC booster circuit, the charger input interface connects between the charging out splice going splice by diode.
The DC-DC reduction voltage circuit connects the charging constant-current control circuit, and the DC-DC booster circuit connects the discharge constant-current control circuit; The negative pole of lithium cell connects charger input interface and charging out splice going splice respectively by the super-charge super-discharge protective circuit, and the positive pole of lithium cell connects lithium electric protection circuit, and lithium cell, lithium electric protection circuit and super-charge super-discharge protective circuit constitute the battery protection loop.
With reference to Fig. 9, the DC-DC reduction voltage circuit comprises single-chip microcomputer U1 (AOZ1010), inductance L 1, filter capacitor C3 and Voltage Feedback resistance R 6, R7, the power input of single-chip microcomputer U1 is connected the charger input interface, the power output end of single-chip microcomputer U1 is successively by inductance L 1 and filter capacitor C3 ground connection, Voltage Feedback resistance R 6, R7 serial connection back one end are connected between inductance L 1 and the filter capacitor C3, other end ground connection, another input of single-chip microcomputer U1 is connected between feedback resistance R6, the R7 and connects; Described charging constant-current control circuit comprises comparator U2C, resistance R 19, R8, R16, capacitor C 11, isolating diode D3, the positive input terminal of comparator U2C is by detecting resistance R 16 ground connection, the negative input end of comparator U2C (LM324) is by resistance R 19 ground connection, capacitor C 11, resistance R 8 are connected in parallel on output and the negative input end of comparator U2C (LM324) respectively, and the output of U2C connects single-chip microcomputer U1 by isolating diode L4148.
During charging, utilize original-pack charger output 5.0V power supply, by the DC-DC reduction voltage circuit, voltage is stabilized in 4.5V ± 0.01V, by behind the diode D4, voltage is stabilized in 4.2V ± 0.01V and charges the battery then.In the charging process, if charging current is when setting electric current (300mA), the voltage drop that produces on current sense resistor R16 also increases, after this voltage amplifies about 10 times to it by comparator U2C (LM324), resistance R 19, R8 and capacitor C 11, feed back to the pressure feedback port of single-chip microcomputer U1 (AOZ1010) by isolating diode D3 (L4148), by reducing output voltage, constant in 300mA ± 20mA charging current.If charging current is during less than 300mA, amplifying circuit is failure to actuate, and charges the battery in the constant voltage mode.
When utilizing original-pack charger mobile phone to be charged simultaneously for this product and its, switch (being the switch 13 among Fig. 2, S1 among Fig. 9) is got to " OFF " position.This moment, charger will be earlier to the charging of adversary's part, and when adversary's part was full of electricity soon, commentaries on classics was charged to this product thereby circuit will automatically switch.
The DC-DC booster circuit comprises the IC U3 (S-8355M20) that boosts, metal-oxide-semiconductor field effect transistor Q3 (AO3414), Schottky two utmost point D5, inductance L 2 and resistance R 13, R14, the positive source of IC U3 of boosting connects the lithium cell positive pole by switch, resistance R 13, R14 serial connection back one end is connected the power cathode of the ICU3 that boosts, the other end is connected the positive pole of the IC U3 that boosts with inductance L 2 by diode D5, connect the charging out splice going splice between resistance R 14 and the diode D5, the grid of metal-oxide-semiconductor field effect transistor Q3 meets the IC U3 that boosts, drain electrode is connected between diode D5 and the inductance L 2, and source electrode is taken over and filled over-discharge protection circuit; Described discharge constant-current control circuit comprises comparator U2D, resistance R 15, R23, R22, capacitor C 8, isolating diode D7 (L4148), the negative input end of resistance R 23, R22 serial connection back one termination comparator U2D, the other end connects charging out splice going splice and comparator U2D positive input terminal simultaneously, resistance R 15, capacitor C 8 are connected in parallel on output and the negative input end of comparator U2D respectively, and the output of U2D connects single-chip microcomputer U1 by isolating diode D7.
During discharge, switch 13 (see figure 2)s are pushed " ON " position, cell voltage is raised to 5.0V ± 0.01 to voltage through the booster circuit of compositions such as the ICS-8355M20 that boosts, MOSFET AO3414, Schottky two utmost point D5, resistance R 13, R14.When giving cell-phone charging, if charging current is greater than setting electric current (during 650mA ± 50mA), the voltage drop that produces on current sense resistor R22 also increases, after this voltage signal amplifies about 30 times to it by comparator U2D (LM324), resistance R 15, R23 and capacitor C 8, feed back to the pressure feedback port of the IC S-8355M20 that boosts by isolating diode L4148, by reducing output voltage, constant in 650mA ± 50mA charging current.If the cell-phone charging electric current is during less than 650mA ± 50mA, amplifying circuit is failure to actuate, and will give cell-phone charging in the constant voltage mode.
Detect resistance R 16 and be connected the charger input interface by comparator U2A, U2B and two-color diode D1 (promptly 3 in charging indicator light 12) successively, when standby battery of mobile phone is charged, the voltage that charging current produces on current sense resistor R16, the reference voltage of this voltage and comparator is made comparisons, and carries out if this voltage, illustrates charging greater than the reference voltage of setting, comparator U2A output low level, red LED is bright, and comparator U2B exports high level, and green LED does not work.If the voltage that produces on the resistance R 16 during less than the reference voltage set, illustrate that charging current is very little, the battery charge end, comparator U2A exports high level, and red LED does not work, comparator U2B output low level, green LED is bright.
When opening switch 13, booster circuit work, cell voltage is given D6 (discharge indicator light 14 among Fig. 3) by inductance L 2 and current-limiting resistance R12, and D6 is bright, and when if the output switch is got to " OFF " position, booster circuit is not worked, and this moment, D6 did not work.
The super-charge super-discharge protective circuit comprises power management IC U4 (S-8261) and is subjected to the metal-oxide-semiconductor field effect transistor U5 (UPA1870) of its control break-make; the positive supply input of power management IC U4 connects the DC-DC reduction voltage circuit; the discharge control inlet of described metal-oxide-semiconductor field effect transistor U5 connects the DC-DC booster circuit, and the charging control inlet of described metal-oxide-semiconductor field effect transistor U5 connects the DC-DC reduction voltage circuit.The electric power management circuit mainly break-make by power management IC S-8261 control MOSFET UPA1870 is realized loop between battery and the circuit, thereby reaches purposes such as the protection battery unlikelyly overcharges, overdischarge, overcurrent, short circuit.

Claims (10)

1. standby battery of mobile phone, comprise the body housing of interconnected electric core and circuit board, ccontaining described electric core and circuit board, the charging input interface that is connected described electric core and circuit board, charging out splice going splice, it is characterized in that, described body housing comprises left side sheet, right side sheet and connects described left side sheet and the base plate of right side sheet, described base plate has the hole that allows charging out splice going splice outer end to pass through, and described charging out splice going splice is to be positioned at the swivel joint that described left side sheet, right side sheet and base plate surround the cavity that forms.
2. standby battery of mobile phone according to claim 1, it is characterized in that, described swivel joint comprises contact, the middle part of fixed contact has the cylindrical swivel mount of discoid protuberance, described discoid protuberance has a semicircular breach near contact one end, discoid one week of protuberance side surface is evenly equipped with some fins, correspondingly, described left side sheet, respectively have two parallel fins on the madial wall of right side sheet and described swivel joint opposite position, distance between these two parallel fins equals the width of fin on the described discoid protuberance, big outer little round stepped hole is provided with a boss in the Kong Weiyi on the described base plate on the step surface of described round stepped hole.
3. standby battery of mobile phone according to claim 2 is characterized in that, cylindrical swivel mount center has axis hole, and power line is connected with contact by described axis hole.
4. standby battery of mobile phone according to claim 1, it is characterized in that, the end edge of described left side sheet, right side sheet homonymy respectively has half circumferential notch, article one, the end of two ends with plastic cement rope of node fixed between described two semicircle breach, and the other end of described plastic cement rope connects the plastic cement cap that has circular hole on the sidewall.
5. standby battery of mobile phone according to claim 1, it is characterized in that, between described charger input interface and electric core, be connected with the DC-DC reduction voltage circuit, between electric core and charging out splice going splice, be connected with the DC-DC booster circuit, be provided with switch between described electric core and DC-DC booster circuit, described charger input interface connects between the charging out splice going splice by diode.
6. standby battery of mobile phone according to claim 5 is characterized in that, described DC-DC reduction voltage circuit connects the charging constant-current control circuit, and described DC-DC booster circuit connects the discharge constant-current control circuit; The negative pole of described electric core connects charger input interface and charging out splice going splice respectively by the super-charge super-discharge protective circuit, and the positive pole of electric core connects the electric protection circuit, and electric core, electric protection circuit and super-charge super-discharge protective circuit constitute the battery protection loop.
7. standby battery of mobile phone according to claim 6, it is characterized in that, described DC-DC reduction voltage circuit comprises single-chip microcomputer U1, inductance L 1, filter capacitor C3 and Voltage Feedback resistance R 6, R7, the power input of single-chip microcomputer U1 is connected the charger input interface, the power output end of single-chip microcomputer U1 is successively by inductance L 1 and filter capacitor C3 ground connection, Voltage Feedback resistance R 6, R7 serial connection back one end are connected between inductance L 1 and the filter capacitor C3, other end ground connection, another input of single-chip microcomputer U1 is connected between feedback resistance R6, the R7 and connects; Described charging constant-current control circuit comprises comparator U2C, resistance R 19, R8, R16, capacitor C 11, isolating diode D3, the positive input terminal of comparator U2C is by detecting resistance R 16 ground connection, the negative input end of comparator U2C is by resistance R 19 ground connection, capacitor C 11, resistance R 8 are connected in parallel on output and the negative input end of comparator U2C respectively, and the output of U2C connects single-chip microcomputer U1 by isolating diode D3.
8. standby battery of mobile phone according to claim 6, it is characterized in that, described DC-DC booster circuit comprises the IC U3 that boosts, metal-oxide-semiconductor field effect transistor Q3, diode D5, inductance L 2 and resistance R 13, R14, the positive source of IC U3 of boosting connects electric core positive pole by switch, resistance R 13, R14 serial connection back one end is connected the power cathode of the IC U3 that boosts, the other end is connected the positive pole of the IC U3 that boosts with inductance L 2 by diode D5, connect the charging out splice going splice between resistance R 14 and the diode D5, the grid of metal-oxide-semiconductor field effect transistor Q3 meets the IC U3 that boosts, drain electrode is connected between diode D5 and the inductance L 2, and source electrode is taken over and filled over-discharge protection circuit; Described discharge constant-current control circuit comprises comparator U2D, resistance R 15, R23, R22, capacitor C 8, isolating diode D7, the negative input end of resistance R 23, R22 serial connection back one termination comparator U2D, the other end connects charging out splice going splice and comparator U2D positive input terminal simultaneously, resistance R 15, capacitor C 8 are connected in parallel on output and the negative input end of comparator U2D respectively, and the output of U2D connects single-chip microcomputer U1 by isolating diode D7.
9. standby battery of mobile phone according to claim 6; it is characterized in that; described super-charge super-discharge protective circuit comprises power management IC U4 and is subjected to the metal-oxide-semiconductor field effect transistor U5 of its control break-make; the positive supply input of described power management IC U4 connects the DC-DC reduction voltage circuit; the discharge control inlet of described metal-oxide-semiconductor field effect transistor U5 connects the DC-DC booster circuit, and the charging control inlet of described metal-oxide-semiconductor field effect transistor U5 connects the DC-DC reduction voltage circuit.
10. standby battery of mobile phone according to claim 5 is characterized in that, described DC-DC reduction voltage circuit is connected the charger input interface by comparator U2A, U2B with two-color diode D1 successively, is serially connected with light-emitting diode D6 on the described DC-DC booster circuit.
CNU2007201208676U 2007-06-15 2007-06-15 Mobile phone spare battery Expired - Fee Related CN201112529Y (en)

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Application Number Priority Date Filing Date Title
CNU2007201208676U CN201112529Y (en) 2007-06-15 2007-06-15 Mobile phone spare battery

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Application Number Priority Date Filing Date Title
CNU2007201208676U CN201112529Y (en) 2007-06-15 2007-06-15 Mobile phone spare battery

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CN201112529Y true CN201112529Y (en) 2008-09-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005793A (en) * 2010-11-22 2011-04-06 胡建坤 Charge-discharge control battery, nested battery and electric shaver
CN104883843A (en) * 2015-05-28 2015-09-02 努比亚技术有限公司 Electronic equipment protection structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005793A (en) * 2010-11-22 2011-04-06 胡建坤 Charge-discharge control battery, nested battery and electric shaver
CN102005793B (en) * 2010-11-22 2016-04-13 胡建坤 One can charge and discharge control battery, nested battery and a kind of electric shaver
CN104883843A (en) * 2015-05-28 2015-09-02 努比亚技术有限公司 Electronic equipment protection structure

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C14 Grant of patent or utility model
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ASS Succession or assignment of patent right

Owner name: LI KAIMING

Free format text: FORMER OWNER: DONGGUAN HUIZHENG ELECTRONIC CO., LTD.

Effective date: 20080905

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20080905

Address after: Guangdong province Dongguan city Changan town usha Chen Wu first industrial zone and three road surplus mold factory 2 floor, zip code: 523000

Patentee after: Li Kaiming

Address before: Guangdong province Dongguan city Changan Town, usha Chen Wu first industrial zone, 523007

Patentee before: Dongguan Huizheng Electronic Co., Ltd.

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080910