CN201191770Y - Circuit construction of portable power supply apparatus - Google Patents

Abstract

The utility model discloses a circuit structure of a portable power supply device, which comprises a battery unit, a circuit-switching unit, a detecting unit, a voltage lifting unit, an adjusting unit and protection unit which are electrically connected mutually. The detecting unit of the circuit is utilized to detect voltage which is generated under the matching of the battery unit of the circuit and the switching unit of the circuit, and a first signal is sent under the condition that the detected voltage exceeds the preset reference value to notice the protection unit to form a broken circuit to prevent voltage from outputting, thereby achieving the purpose of protecting electric appliance products which will use the portable power supply device to charge or discharge.

Description

A kind of circuit structure of Portable supply unit

Technical field

The utility model relates to a kind of circuit structure, especially relates to a kind of circuit structure of Portable supply unit.

Background technology

Along with science and technology is flourishing gradually, the accompanied electronic product of portable such as mobile phone, notebook computer etc. are also day by day popularized, but, the battery that this type of the portable electronic device overwhelming majority remains by self drives, when the user out of doors and during the power drain of battery, this device just can't use.Therefore, the carry-on charge/discharge equipment that the applicant promptly develops a kind of " Portable supply unit " uses so that the accompanied electronic end user of portable still can carry out charge/discharge to the portable type portable electronic device out of doors the time.

As shown in Figure 1, this Portable supply unit 1 comprise a shell block with the first～three battery case 114,115,116 11, one be arranged at respectively the first～three pole piece group 13,14,14 in this first～three battery case 114,115,116 ', a circuit changeover module 15 that is arranged on this shell block 11, and switch member 16 that is arranged on this shell block 11.Utilize the switching adjustment of this circuit changeover module 15, can make the design of this first～three pole piece group 13,14,14 ' be series circuit, place for the series connection of three batteries, also can make this second, third pole piece group 14,14 ' be the parallel circuits design, place for two batteries are in parallel.Utilize the switching of this circuit changeover module, make integral body be common to multiple battery kind (as lithium battery or silver oxide cell) serial or parallel connection and use, thereby it is wide and ease of use is good to make this Portable supply unit be suitable for category.

But, because the user still may use the battery (as silver oxide cell, manganese-zinc battery etc.) of lithium battery as low-voltage by mistake, or this Portable supply unit 1 is not switched to correct serial or parallel connection position, thereby can cause whole output voltage too high and when the mobile electronic device charge/discharge is used, electronic equipment is caused damage.

The utility model content

In view of this; main purpose of the present utility model is to be to overcome the deficiency that above-mentioned prior art exists, and provides a kind of and has protective circuit and be used for protecting mobile electronic device to be unlikely to because output voltage is unusual and cause the circuit structure of the Portable supply unit that damages.

In order to reach above-mentioned utility model purpose, the utility model proposes a kind of circuit structure of Portable supply unit, comprising:

Battery unit has interconnective first, second and third pole piece group for the battery placement;

The circuit switch unit has a body element that is electrically connected on described the first～three pole piece group, and the switching device of the described body element circuit state of a control;

Be used to detect the detecting unit of the voltage condition that described battery unit and described circuit switch unit be complementary, be electrically connected on described battery unit and described circuit switch unit;

Be used to change the voltage up-down unit of the voltage that the described battery unit that is electrically connected with described circuit switch unit exports, be electrically connected on described circuit switch unit;

Be used to control the adjustment unit of the voltage amplitude of being exported the described voltage up-down unit that is electrically connected with described circuit switch unit, be electrically connected on described battery unit, described detecting unit and described circuit switch unit;

Be used for protected location, be electrically connected on described circuit switch unit, described detecting unit and described voltage up-down unit using this Portable supply unit charge/discharge electric equipment products to protect.

The utility model effect is to utilize described detecting unit to detect the voltage that described battery unit and described circuit switch unit are complementary and produce; and the voltage that ought detect surpasses one first signal of transmission under the situation of preset reference value; inform that described protected location opens circuit and stops the output of voltage to form one, and then reach the purpose that protectiveness is used this Portable supply unit charge/discharge electric equipment products.

Description of drawings

Fig. 1 is the stereogram of China novel patent announcement M303494 Portable supply unit.

Fig. 2 is the structural representation of the circuit structure embodiment of the utility model Portable supply unit.

Fig. 3 is the circuit structure diagram of the circuit structure embodiment of the utility model Portable supply unit.

Embodiment

Core concept of the present utility model is to utilize described detecting unit to detect the voltage that described battery unit and described circuit switch unit are complementary and produce; and the voltage that ought detect surpasses one first signal of transmission under the situation of preset reference value; inform that this protected location opens circuit and stops the output of voltage to form one, will cooperate reference diagram that the utility model is described in detail at following preferred embodiment.

Shown in Fig. 2,3; the preferred embodiment of the circuit structure of the utility model Portable supply unit; comprise a battery unit 2, circuit switch unit 3, detecting unit 4, voltage up-down unit 5, an adjustment unit 6, and a protected location 7.

Described battery unit 2 has interconnective first, second and third pole piece group 21,22,23, place for battery, in the present embodiment, when respectively battery being housed as this first, second and third pole piece group 21,22,23, these three batteries are to use low-voltage battery such as silver oxide cell, alkaline battery, manganese-zinc battery etc., and in the time will using high-voltage battery (as lithium battery), then be to adopt two lithium batteries to be loaded on the mode of this second and third pole piece group 22,23 respectively.Be noted that because Fig. 2 is the cause of a structural representation at this, so this first, second and third pole piece group 21,22,23 can only be to represent in schematic form.

Described circuit switch unit 3 has one and is electrically connected on described the first～three pole piece group 21,22,23 body element 31, and the switch piece 32 of the circuit state of a control body element 31, this switch piece 32 can be controlled this body element 31 and switch between a series connection state and a state in parallel, when this body element 31 is when being in this series connection, can make this first～three pole piece group 21,22,23 electrical connections are series connection (for example three manganese-zinc batteries are series connection), when this body element 31 is when being in this parallel connection state, then make these body element 31 controls this second, the 3rd pole piece group 22,23 electrical connections are state in parallel (for example two lithium batteries are state in parallel).

Be noted that at this, how with between described the first～three pole piece group 21,22,23 described body element 31 is to interconnect and cooperate this switch piece 32 to carry out the switching of series connection and state in parallel, in M303494 number " Portable supply unit " novel patent case of China's patent announcement, disclose to some extent, the technical staff who has relevant knowledge in the technical field under should be can be implemented according to its explanation, is not given unnecessary details at this.

Described detecting unit 4 is electrically connected with described battery unit 2 and described circuit switch unit 3, and detect the voltage condition that when this series connection and state in parallel, is produced that this battery unit 2 and this circuit switch unit 3 are complementary, and when voltage condition exceeds a preset reference value one first signal of output.In the present embodiment, described detecting unit 4 is to be carried out by a chip (S-8261), sets and other modes of operation as for the comparative voltage of this chip internal, should be the personage who is familiar with this technology and is familiar with, and is not here given unnecessary details equally.

Described voltage up-down unit 5 is to be electrically connected with described circuit switch unit 3, and is used for changing the voltage that the described battery unit 2 that is electrically connected with this circuit switch unit 3 is exported.In the present embodiment, described voltage up-down unit 5 adopts the conversion chip (DC-DC Converter IC) of a dc-dc, thereby and a default voltage is exported by the control of described adjustment unit 6, coming that corresponding portable electronic device (for example mobile phone, notebook computer etc.) is carried out charge/discharge uses.

Described adjustment unit 6 is and described battery unit 2, described detecting unit 4, and described circuit switch unit 3 electrical connections, this adjustment unit 6 has a voltage Option stage 61 that is electrically connected with this circuit switch unit 3, and, cooperate the portable electronic device of different voltage specifications to carry out the charge/discharge use with the voltage amplitude that the described voltage up-down unit 5 that these voltage Option stage 61 controls are electrically connected with this circuit switch unit 3 is exported.Be noted that because this voltage Option stage 61 and integration mode thereof for the personage who is familiar with this technology, should be understood according to its corresponding schematic diagram (being Fig. 2) and be implemented easily at this, just its details be not described at this.

Described protected location 7 is and described circuit switch unit 3, described detecting unit 4; and described voltage up-down unit 5 is electrically connected; and after receiving first signal of this detecting unit 4, form one and open circuit and stop the output of voltage; in the present embodiment; this protected location 7 is to utilize the first transistor 71 that is electrically connected mutually to integrate use with transistor seconds 72, and its integration mode is as follows:

Described the first transistor 71 is field-effect transistors, described transistor seconds 72 is bipolar junction transistors, the drain electrode of this first transistor 71 (drain) be electrically connected with output, source electrode (source) is to be connected with the voltage output end of this voltage up-down unit 5, its grid (gate) is to be electrically connected with the collector electrode (collector) of this transistor seconds 72, the base stage of this transistor seconds 72 (base) then is to be electrically connected with described detecting unit 4, and receives this first control signal.

When voltage condition is higher than the preset reference value of described detecting unit 4 (abnormal voltage generation just); this detecting unit 4 will send the base stage of one first control signal to this transistor seconds 72; and touch this transistor seconds 72 that is electrically connected with this detecting unit 4 by this first signal; make between the collector electrode of transistor seconds 72 and the emitter (emitter) and form conducting; and because this transistor seconds 72 is the transistors that belong to the NPN type; therefore after its base stage is touched; electric current will begin to flow to emitter from collector electrode; and direction of current flow and the first transistor 71 that makes grid be electrically connected with the collector electrode of this transistor seconds 72 presents a closed condition thus; and this first transistor 71 is in off position the time; present (not conducting) state that opens circuit between its source electrode and the drain electrode; make to form between described voltage up-down unit 5 and this output OUT+ and open circuit; thereby make desire use the electronic installation of this Portable supply unit charge/discharge can not receive too high voltage, and then it is formed protection.

In sum; the circuit structure of the utility model Portable supply unit; the voltage that utilizes described detecting unit 4 described battery units 2 of detecting and described circuit switch unit 3 to be complementary and to produce; and send one first signal under the situation of preset reference value and inform that described protected location 7 forms one and opens circuit and stop voltage output when the voltage of detecting surpasses; and then reach the purpose that protectiveness is used this Portable supply unit charge/discharge electric equipment products, so can reach the purpose of this utility model really.

The above only is a preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model

Claims (2)

1, a kind of circuit structure of Portable supply unit is characterized in that: comprising:

Battery unit has interconnective first, second and third pole piece group for the battery placement;

The circuit switch unit has a body element that is electrically connected on described the first～three pole piece group, and the switching device of the described body element circuit state of a control;

Be used to detect the detecting unit of the voltage condition that described battery unit and described circuit switch unit be complementary, be electrically connected on described battery unit and described circuit switch unit;

Be used to change the voltage up-down unit of the voltage that the described battery unit that is electrically connected with described circuit switch unit exports, be electrically connected on described circuit switch unit;

Be used to control the adjustment unit of the voltage amplitude of being exported the described voltage up-down unit that is electrically connected with described circuit switch unit, be electrically connected on described battery unit, described detecting unit and described circuit switch unit;

Be used for protected location, be electrically connected on described circuit switch unit, described detecting unit and described voltage up-down unit using this Portable supply unit charge/discharge electric equipment products to protect.

2, the circuit structure of Portable supply unit according to claim 1; it is characterized in that: described protected location also comprises: a first transistor and a transistor seconds; wherein this first transistor is electrically connected with this transistor seconds, and this transistor seconds is electrically connected with this detecting unit.

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