CN202749862U - Charging device - Google Patents
Charging device Download PDFInfo
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- CN202749862U CN202749862U CN 201220411255 CN201220411255U CN202749862U CN 202749862 U CN202749862 U CN 202749862U CN 201220411255 CN201220411255 CN 201220411255 CN 201220411255 U CN201220411255 U CN 201220411255U CN 202749862 U CN202749862 U CN 202749862U
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Abstract
The utility model provides a charging device for charging for terminals connected with the charging device, comprising a loudspeaker, an audio input terminal for inputting audio signals, a loudspeaker drive circuit which is connected with the loudspeaker and the audio input terminal and is used for driving the loudspeaker to play the audio signals and a power supply interface which is connected with the loudspeaker drive circuit and is used for supplying to the loudspeaker drive circuit under a condition that the charging device is connected with an external power supply. According to the technology scheme of the utility model, terminal charging and an audio amplification function can be combined on the device, simultaneously realized and respectively realized without affecting with each other. The charging device brings relatively abundant and convenient use experience for users.
Description
Technical field
The utility model relates to charging and audio frequency play-back technology field, in particular to a kind of charging device.
Background technology
Along with the communication terminal technology, developing rapidly of smart mobile phone technology especially, the developing stage that has entered multimedization as the mobile phone of portable terminal.Multimedia development has brought huge challenge to the flying power of mobile phone, and large-sized display screen, 3G get online without being tethered to a cable, and outgoing loudspeaker, all can consume a large amount of energy of battery of mobile phone, shorten its flying power.
As the music playback function of one of mobile phone multimedia function the earliest, nowadays become a kind of common function of smart mobile phone.As necessity expansion to this function of mobile phone, for providing the external independent audio amplifier of the outer playing function of audio frequency, mobile phone arises at the historic moment.Yet existing external independent audio amplifier need to connect external power source for its power supply, and this power supply can not supply with connected mobile phone, is its charging.Like this, in a single day the internal battery of mobile phone is used up, and music also just can't be carried out thereupon, and this moment, if charge to mobile phone, needing again is that it connects other charging device, operates relatively loaded down with trivial detailsly, can not bring good experience for the user.
Therefore, need a kind of new technical scheme, can will be combined on the device for playing function outside terminal charge and the audio frequency, and two functions both can realize simultaneously, also can realize respectively, be independent of each other, bring more abundant and experience easily to the user.
The utility model content
Technical problem to be solved in the utility model is, a kind of new technical scheme is provided, can will be combined on the device for playing function outside terminal charge and the audio frequency, and two functions both can realize simultaneously, also can realize respectively, be independent of each other, bring more abundant and experience easily to the user.
In view of this, the utility model provides a kind of charging device, is used to the terminal that is connected to described charging device to charge, and described charging device also comprises: loud speaker; Audio input port is used for input audio signal; Loudspeaker driving circuit links to each other with described audio input port with described loud speaker, is used for driving described loud speaker and plays described audio signal; Power interface is connected with described loudspeaker driving circuit, is used in the situation that be connected to external power source, to described loudspeaker driving circuit power supply.
In the technical program, by at described charging device integral speakers, loudspeaker driving circuit, audio input port and power interface, with the outer playing function of audio frequency be integrated into for the function of terminal charge among the device, and two-part circuit is relatively independent, only pass through power interface, provide electric power by the external power source unification for two parts function, like this with regard to so that for regard to the described charging device, this two parts function both can realize simultaneously, can realize respectively again, be independent of each other, thereby bring more abundant and experience easily for the user.
In technique scheme, preferably, also comprise: at least one built-in power, be connected with described loudspeaker driving circuit, be used for to described loudspeaker driving circuit power supply.
In the technical program, be the loudspeaker driving circuit power supply by in described charging device, increasing built-in power, so that described charging device also can externally provide audio frequency outer playing function in the situation that do not connect external power source so that described charging device playing function has had greater flexibility outside the audio frequency externally providing.Further, be that the power supply capacity of built-in power of described charging device configuration is enough under the powerful condition, also can utilize this built-in power in the situation that described charging device does not connect external power source, for accessing the terminal charge of described charging device, and then so that in the situation that do not connect external power source, described charging device still can be provided as simultaneously terminal charge and audio frequency and put this two functions outward.
In technique scheme, preferably, also comprise: circuit is selected in power supply, described power supply selects an end of circuit to be connected to described loudspeaker driving circuit, the other end is connected to respectively described power interface and described built-in power, be used for according to the residing power supply environment of described charging device, select to the mode of described loudspeaker driving circuit power supply.
In the technical program, select circuit by introducing described power supply, and then so that described charging device can be automatically according to self residing power supply environment, be its power supply as whether external equipment being arranged, be chosen as the supply power mode of described loudspeaker driving circuit, and then more effectively utilize the obtainable energy resource of described charging device.
In technique scheme, preferably, described power supply selects circuit also to comprise: the power supply access detects electronic circuit, is connected with described power interface, whether is connected to described external power source for detection of described power interface; The electrical source exchange electronic circuit, be used in the situation that described power interface is connected to described external power source, with described power interface and described loudspeaker driving circuit conducting, to power to described loudspeaker driving circuit, and in the situation that described power interface is not connected to described external power source, with described built-in power and described loudspeaker driving circuit conducting, to power to described loudspeaker driving circuit.
In the technical program, circuit is selected in described power supply, particularly, can comprise: the power supply access detects electronic circuit and electrical source exchange electronic circuit two parts.Whether be connected with external power source by the power interface that detects described charging device, switch the supply power mode that described charging device is described loudspeaker driving circuit, namely when the external power source access was arranged, preferentially using external power source was its power supply; Just using built-in power when not having the external power source access is its power supply, can guarantee so that described loudspeaker driving circuit can work like this, and then on the basis that guarantees the audio frequency playback, reasonably use described built-in power, and then guarantee that as far as possible described built-in power can in time play a role under case of emergency.
In technique scheme, preferably, described power supply selects circuit also to comprise: the first voltage detecting electronic circuit is connected with described built-in power, for detection of the voltage of described built-in power; Switch control electronic circuit, the voltage that is used for detecting described built-in power at described the first voltage detecting electronic circuit is lower than in the situation of the first default magnitude of voltage, cuts off described built-in power to the supply line of described loudspeaker driving circuit.
In the technical program, circuit is selected in described power supply, particularly, can also comprise: the first voltage detecting electronic circuit and switch control electronic circuit.The size of the output voltage of described built-in power can be used as its can supplying power for outside the sign of size of electric weight.When the output voltage of described built-in power is lower than certain magnitude of voltage (as described the first magnitude of voltage), represent that namely the electric weight that this built-in power can supplying power for outside remains little, this moment as continuation use it to power, both affected the working effect of described loudspeaker driving circuit and coupled loud speaker, may bring to the useful life of this built-in power negative effect again, therefore, in this case, cut off described built-in power to the supply line of described loudspeaker driving circuit by described switch control electronic circuit, simultaneously, further prompting user is connected to external power source with described charging device, guaranteeing that described charging device can steady in a long-term work, and then assurance user's experience.
In technique scheme, preferably, also comprise voltage-regulating circuit and the first power control circuit, wherein: an end of described voltage-regulating circuit is connected to described built-in power, the other end is connected to described the first power control circuit, and described voltage-regulating circuit also is connected to described power supply and selects circuit or described loudspeaker driving circuit, is used for the voltage of described built-in power is adjusted to the predeterminated voltage value; Described the first power control circuit comprises: second voltage detects electronic circuit, is connected with described built-in power, for detection of the voltage of described built-in power; The voltage control electronic circuit, be used for being lower than default second voltage value at the voltage that described second voltage detection electronic circuit detects described built-in power, and be higher than in the situation of the first default magnitude of voltage, send voltage control signal to described voltage-regulating circuit, open described voltage-regulating circuit, so that described built-in power is carried out the voltage adjustment.
In the technical program, owing to wanting to make described loudspeaker driving circuit normal operation, and then the audio frequency that guarantees described charging device puts quality outward, the input voltage of described loudspeaker driving circuit need to be remained on more than the certain voltage value (as described second voltage value).Therefore, using described built-in power in the situation that described charging device does not connect external power source is described loudspeaker driving circuit power supply, if the output voltage of described built-in power can not reach the required magnitude of voltage of described loudspeaker driving circuit normal operation, even then make reluctantly this moment described loudspeaker driving circuit work can not guarantee effect and quality that its audio frequency is play.But, if this moment, described built-in power can supplying power for outside electric weight still abundant, although the output voltage values that is described built-in power is lower than described second voltage value, but still be higher than very low described the first magnitude of voltage of the described built-in power electric weight of expression, if only just directly abandon described loudspeaker driving circuit power supply because its magnitude of voltage is not high enough this moment, then this part electric weight in the described built-in power will be in the state that is not used always, and then be equivalent to reduce artificially the operable total electric weight of described built-in power, cause the waste for electric weight, also unnecessarily reduced the service time that described charging device independently provides the outer playing function of audio frequency simultaneously.Therefore, can in described charging device, introduce described voltage-regulating circuit and the first power control circuit, in these cases, suitably adjust the output voltage values of described built-in power, make it satisfy the condition that makes described loudspeaker driving circuit normal operation, and then reach outside guaranteeing the audio frequency of described charging device and put on the basis of quality, rationally use described built-in power, prolong described charging device audio frequency independently the is provided outer effect of the service time of playing function.
In technique scheme, preferably, described voltage-regulating circuit comprises: booster circuit.
In the technical program, described voltage-regulating circuit can come direct output voltage to described built-in power to boost with the relatively simple booster circuit of structure.And then, on the basis of effect that guarantees to boost, simplify the internal circuit of described charging device as far as possible, reduce the complexity of circuit, to guarantee its reliability.
In technique scheme, preferably, also comprise: charging circuit, with described built-in power be connected power interface and be connected, be used in the situation that described power interface is connected to described external power source, to described built-in power charging.
In the technical program, by introducing described charging circuit, in the situation that be connected to described external power source at described power interface, to described built-in power charging, and then so that described charging device can effectively utilize external power source more, guarantee described charging device in the situation that there is not the external power source access, the function that independently provides audio frequency to put outward can be more reliable, and stably be achieved.
In technique scheme, preferably, also comprise the second source control circuit, wherein, described second source control circuit comprises: tertiary voltage detects electronic circuit, is connected with described built-in power, for detection of the voltage of described built-in power; Charging control electronic circuit is connected with described charging circuit, is used for sending charging control signal to described charging circuit when the voltage of described built-in power is less than or equal to default tertiary voltage value, so that described built-in power is charged.
In the technical program, can introduce described second source control circuit and control for the charging process of described built-in power.Wherein said tertiary voltage value can equal or a little more than described the first magnitude of voltage, power supply environment in the time of so just can taking full advantage of described charging device access external power source, not enough or be about to automatically in time it be charged when not enough at the electric weight of described built-in power, and then guarantee described charging device in the situation that there is not the external power source access, possess the stable ability that the outer playing function of audio frequency independently is provided, improve user's experience.Further, described second source control circuit and described the first power control circuit can be merged into a power control circuit that has both functions concurrently, to reduce the complex structure degree of described charging device inside.
In technique scheme, preferably, also comprise: the loudspeaker switch circuit, be connected to described loudspeaker driving circuit, be used for controlling the on off state of described loudspeaker driving circuit according to the power amplifier switch control signal that receives.
In the technical program, by in described charging device, introducing described loudspeaker switch circuit, and then so that the loud speaker control switch that the user can provide by this circuit, directly control the on off state of described loudspeaker driving circuit, be that the user needn't be by connecting or function and described loudspeaker driving circuit to terminal charge are opened or closed to the mode of deenergization (comprising external power source and built-in power) simultaneously, but can select separately to open or close described loudspeaker driving circuit by described loudspeaker switch circuit, and then so that the user not only can use separately the playing function outside terminal charge and audio frequency of described charging device, can also save the electric weight that described charging device consumes by close described loudspeaker driving circuit in good time as far as possible, improve user's experience.
By above technical scheme, can be with for the outer playing function of terminal charge and audio frequency be combined on the device, and two functions both can realize simultaneously, also can realize respectively, were independent of each other, bring more abundant and experience easily to the user.
Description of drawings
Fig. 1 shows the block diagram according to the charging device of embodiment of the present utility model;
Fig. 2 shows the circuit diagram according to the charging device of embodiment of the present utility model.
Embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments the utility model is further described in detail.Need to prove, in the situation that do not conflict, the application's embodiment and the feature among the embodiment can make up mutually.
A lot of details have been set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection range of the present utility model is not subjected to the restriction of following public specific embodiment.
Fig. 1 shows the block diagram according to the charging device of embodiment of the present utility model.
As shown in Figure 1, according to the charging device 100 of embodiment of the present utility model, be used to the terminal that is connected to described charging device 100 to charge, described charging device 100 also comprises: loud speaker 102; Audio input port 104 is used for input audio signal; Loudspeaker driving circuit 106 links to each other with described audio input port 104 with described loud speaker 102, is used for driving described loud speaker 102 and plays described audio signal; Power interface 108 is connected with described loudspeaker driving circuit 106, is used in the situation that be connected to external power source, to described loudspeaker driving circuit 106 power supplies.
In the technical program, by at described charging device 100 integral speakers 102, loudspeaker driving circuit 106, audio input port 104 and power interface 108, with the outer playing function of audio frequency be integrated into for the function of terminal charge among the device, and two-part circuit is relatively independent, only by power interface 108, provide electric power by the external power source unification for two parts function, like this with regard to so that for regard to the described charging device 100, this two parts function both can realize simultaneously, can realize respectively again, be independent of each other, thereby bring more abundant and experience easily for the user.
In technique scheme, preferably, also comprise: at least one built-in power 110, be connected with described loudspeaker driving circuit 106, be used for to described loudspeaker driving circuit 106 power supplies.
In the technical program, by at described charging device 100 interior increase built-in powers 110 being loudspeaker driving circuit 106 power supplies, so that described charging device 100 also can externally provide audio frequency outer playing function in the situation that do not connect external power source so that described charging device 100 playing function has had greater flexibility outside the audio frequency externally providing.Further, be that the power supply capacity of built-in power 110 of described charging device 100 configurations is enough under the powerful condition, also can utilize this built-in power 110 in the situation that described charging device 100 does not connect external power source, for accessing the terminal charge of described charging device 100, and then so that in the situation that do not connect external power source, described charging device 100 still can be provided as simultaneously terminal charge and audio frequency and put this two functions outward.
In technique scheme, preferably, also comprise: circuit 112 is selected in power supply, described power supply selects an end of circuit 112 to be connected to described loudspeaker driving circuit 106, the other end is connected to respectively described power interface 108 and described built-in power 110, be used for according to described charging device 100 residing power supply environment, select to the mode of described loudspeaker driving circuit 106 power supplies.
In the technical program, select circuit 112 by introducing described power supply, and then so that described charging device 100 can be automatically according to self residing power supply environment, be its power supply as whether external equipment being arranged, be chosen as the supply power mode of described loudspeaker driving circuit 106, and then more effectively utilize 100 obtainable energy resources of described charging device.
In technique scheme, preferably, described power supply selects circuit 112 also to comprise: the power supply access detects electronic circuit 1122, is connected with described power interface 108, whether is connected to described external power source for detection of described power interface 108; Electrical source exchange electronic circuit 1124, be used in the situation that described power interface 108 is connected to described external power source, with described power interface 108 and described loudspeaker driving circuit 106 conductings, to power to described loudspeaker driving circuit 106, and in the situation that described power interface 108 is not connected to described external power source, with described built-in power 110 and described loudspeaker driving circuit 106 conductings, to power to described loudspeaker driving circuit 106.
In the technical program, circuit 112 is selected in described power supply, particularly, can comprise: the power supply access detects electronic circuit 1122 and electrical source exchange electronic circuit 1124 two parts.Whether be connected with external power source by the power interface 108 that detects described charging device 100, switch described charging device 100 and be the supply power mode of described loudspeaker driving circuit 106, namely when the external power source access was arranged, preferentially using external power source was its power supply; Just use built-in power 110 to be its power supply when not having the external power source access, can guarantee so that described loudspeaker driving circuit 106 can work like this, and then on the basis that guarantees the audio frequency playback, reasonably use described built-in power 110, and then guarantee that as far as possible described built-in power 110 can in time play a role under case of emergency.
In technique scheme, preferably, described power supply selects circuit 112 also to comprise: the first voltage detecting electronic circuit 1126 is connected with described built-in power 110, for detection of the voltage of described built-in power 110; Switch control electronic circuit 1128, the voltage that is used for detecting described built-in power 110 at described the first voltage detecting electronic circuit 1126 is lower than in the situation of the first default magnitude of voltage, cuts off described built-in power 110 to the supply line of described loudspeaker driving circuit 106.
In the technical program, circuit 112 is selected in described power supply, particularly, can also comprise: the first voltage detecting electronic circuit 1126 and switch control electronic circuit 1128.The size of the output voltage of described built-in power 110 can be used as its can supplying power for outside the sign of size of electric weight.When the output voltage of described built-in power 110 is lower than certain magnitude of voltage (the first magnitude of voltage as described, particularly, can be preset as 3.2V) time, represent that namely the electric weight that this built-in power 110 can supplying power for outside remains little, this moment as continuation use it to power, both affected the working effect of described loudspeaker driving circuit 106 and coupled loud speaker 102, may bring to the useful life of this built-in power 110 negative effect again, therefore, in this case, cut off described built-in power 110 to the supply line of described loudspeaker driving circuit 106 by described switch control electronic circuit 1128, simultaneously, further prompting user is connected to external power source with described charging device 100, can steady in a long-term work to guarantee described charging device 100, and then guarantees user's experience.
In technique scheme, preferably, also comprise voltage-regulating circuit 114 and the first power control circuit 116, wherein: an end of described voltage-regulating circuit 114 is connected to described built-in power, the other end is connected to described the first power control circuit 116, and described voltage-regulating circuit 114 also is connected to described power supply and selects circuit 112 or described loudspeaker driving circuit 106, is used for the voltage of described built-in power 110 is adjusted to the predeterminated voltage value; Described the first power control circuit 116 comprises: second voltage detects electronic circuit 1162, is connected with described built-in power 110, for detection of the voltage of described built-in power 110; Voltage control electronic circuit 1164, be used for being lower than default second voltage value at the voltage that described second voltage detection electronic circuit 1162 detects described built-in power 110, and be higher than in the situation of the first default magnitude of voltage, send voltage control signal to described voltage-regulating circuit 114, open described voltage-regulating circuit 114, so that described built-in power 110 is carried out the voltage adjustment.
In the technical program, owing to wanting to make described loudspeaker driving circuit 106 normal operations, and then the audio frequency that guarantees described charging device 110 is put quality outward, the input voltage of described loudspeaker driving circuit 106 need to be remained on certain voltage value (second voltage value as described, particularly, can be preset as 3.6V) more than.Therefore, in the situation that not connecting external power source, use by described charging device 100 described built-in power 110 to be described loudspeaker driving circuit 106 power supplies, if the output voltage of described built-in power 110 can not reach the required magnitude of voltage of described loudspeaker driving circuit 106 normal operations, even then make reluctantly this moment described loudspeaker driving circuit 106 work can not guarantee effect and the quality that its audio frequency is play.But, if this moment, described built-in power 110 can supplying power for outside electric weight still abundant, although the output voltage values that is described built-in power 110 is lower than described second voltage value, but still be higher than very low described the first magnitude of voltage of the described built-in power electric weight of expression, if only just directly abandon described loudspeaker driving circuit power supply because its magnitude of voltage is not high enough this moment, then this part electric weight in the described built-in power will be in the state that is not used always, and then be equivalent to reduce artificially the operable total electric weight of described built-in power, cause the waste for electric weight, also unnecessarily reduced the service time that described charging device 100 independently provides the outer playing function of audio frequency simultaneously.Therefore, can in described charging device 100, introduce described voltage-regulating circuit 114 and the first power control circuit 116, in these cases, suitably adjust the output voltage values of described built-in power 110, make it satisfy the condition that makes described loudspeaker driving circuit 106 normal operations, and then reach outside guaranteeing the audio frequency of described charging device 100 and put on the basis of quality, rationally use described built-in power 110, prolong the effect that described charging device 100 independently provides the service time of the outer playing function of audio frequency.
In technique scheme, preferably, described voltage-regulating circuit 114 comprises: booster circuit.
In the technical program, described voltage-regulating circuit 114 can come direct output voltage to described built-in power 110 to boost with the relatively simple booster circuit of structure.And then, on the basis of effect that guarantees to boost, simplify the internal circuit of described charging device 100 as far as possible, reduce the complexity of circuit, to guarantee its reliability.
In technique scheme, preferably, also comprise: charging circuit 118, with described built-in power 110 be connected power interface 108 and be connected, be used in the situation that described power interface 108 is connected to described external power source, to described built-in power 110 chargings.
In the technical program, by introducing described charging circuit 118, in the situation that be connected to described external power source at described power interface 108, to described built-in power 110 chargings, and then so that described charging device 100 can effectively utilize external power source more, guarantee described charging device 100 in the situation that there is not the external power source access, the function that independently provides audio frequency to put outward can be more reliable, and stably be achieved.
In technique scheme, preferably, also comprise second source control circuit 120, wherein, described second source control circuit 120 comprises: tertiary voltage detects electronic circuit 1202, is connected with described built-in power 110, for detection of the voltage of described built-in power 110; Charging control electronic circuit 1204 is connected with described charging circuit 118, is used for when the voltage of described built-in power 110 is less than or equal to default tertiary voltage value, sends charging control signal to described charging circuit 118, so that described built-in power 110 is charged.
In the technical program, can introduce described second source control circuit 120 and control for the charging process of described built-in power 110.Wherein said tertiary voltage value can equal or a little more than described the first magnitude of voltage, power supply environment in the time of so just can taking full advantage of described charging device 100 access external power source, not enough or be about to automatically in time it be charged when not enough at the electric weight of described built-in power 110, and then guarantee described charging device 100 in the situation that there is not the external power source access, possess the stable ability that the outer playing function of audio frequency independently is provided, improve user's experience.Further, described second source control circuit 120 and described the first power control circuit 116 can be merged into a power control circuit that has both functions concurrently, to reduce the complex structure degree of described charging device 100 inside.
In technique scheme, preferably, also comprise: loudspeaker switch circuit 122, be connected to described loudspeaker driving circuit 106, be used for controlling the on off state of described loudspeaker driving circuit 106 according to the power amplifier switch control signal that receives.
In the technical program, by in described charging device 100, introducing described loudspeaker switch circuit 122, and then so that the loud speaker control switch that the user can provide by this circuit, directly control the on off state of described loudspeaker driving circuit 106, be that the user needn't be by connecting or function and described loudspeaker driving circuit to terminal charge are opened or closed to the mode of deenergization (comprising external power source and built-in power) simultaneously, but can select separately to open or close described loudspeaker driving circuit 106 by described loudspeaker switch circuit 122, and then so that the user not only can use separately the playing function outside terminal charge and audio frequency of described charging device, can also save the electric weight that described charging device 100 consumes by close described loudspeaker driving circuit 106 in good time as far as possible, improve user's experience.
Fig. 2 shows the circuit diagram according to the charging device of embodiment of the present utility model.
As shown in Figure 2, as follows according to the circuit structure of the charging device of embodiment of the present utility model:
Charging device 200, except being used for the structure to terminal charge, comprising: circuit 210, power control circuit 212, booster circuit 214, built-in power 216, charging circuit 218 etc. are selected in audio access 202, tone frequency channel wire 204, loudspeaker driving circuit 206, loud speaker 208, power supply.
Wherein, audio input port 202 is used for input audio signal; Loudspeaker driving circuit 206 links to each other with audio input port 202 by tone frequency channel wire 204, reception is from the audio signal of outside input, simultaneously, loudspeaker driving circuit 206 links to each other with loud speaker 208, drive described loud speaker 208 and play described audio signal, in addition, loudspeaker driving circuit 206 also has the control signal receiving interface, receive the outside power amplifier switch control signal of importing into, directly control its on off state.
Power supply selects circuit 210 1 ends to link to each other with loudspeaker driving circuit 206, the other end respectively with Fig. 2 in " input power part " link to each other with built-in power 216, for the supply power mode of selection for loudspeaker driving circuit 206.Wherein built-in power 216 can be built-in rechargeable rechargeable battery.
Power control circuit 212(is equivalent to have concurrently the function of the first power control circuit 116 shown in Figure 1 and second source control circuit 120) link to each other with booster circuit 214, built-in power 216 and charging circuit 218 respectively, be used for sending to booster circuit 214 adjustment process of the output voltage of 214 pairs of built-in powers of boosting rectifier control signal controlling booster circuit, send the charging process of 218 pairs of built-in powers 216 of charging control signal control charging circuit to charging circuit 218.Wherein, booster circuit 214 1 ends link to each other with built-in power 216, the other end can with Fig. 2 in " input power part " select the connecting line shared line of circuit 210 to be connected with power supply selection circuit 210 with power supply, and then indirect joint is to loudspeaker driving circuit 206, also can pass through independent circuit and directly be connected with loudspeaker driving circuit 206, will export to loudspeaker driving circuit 206 through the output voltage of the built-in power 216 after adjusting.Charging circuit 218 1 ends are connected with built-in power 216, and the connecting line shared line of " input power part " and " out-put supply part " is connected with " input power part " among the other end and Fig. 2.
In the situation that charging device 200 inserts among supply socket or the PC, power supply selects circuit 210 to select the external power source (such as 5VDC) of input as the power supply of loudspeaker driving circuit 206.
In the situation that charging device 200 does not insert among supply socket or the PC, power supply selects circuit 210 to move according to the electric weight of built-in power 216:
In the situation that built-in power 216 is higher than second voltage value (such as 3.6V), adopt the voltage of built-in power 216 that loudspeaker driving circuit 206 is directly powered;
Be lower than the second voltage value at built-in power 216, but be higher than in the situation of the first magnitude of voltage (such as 3.2V), power control circuit 212 is opened booster circuits 214, the voltage of built-in power 216 is raised to suitable magnitude of voltage (such as 5V) loudspeaker driving circuit 206 is powered;
When the voltage of built-in power 216 is lower than the first magnitude of voltage, the undertension of built-in power 216, not to loudspeaker driving circuit 206 power supplies, and then the outer playing function of the audio frequency of charge closing device 200.
More than be described with reference to the accompanying drawings the technical solution of the utility model.By the application of the technical program, can be with for the outer playing function of terminal charge and audio frequency be combined on the device, and two functions both can realize simultaneously, also can realize respectively, were independent of each other, bring more abundant and experience easily to the user.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a charging device is used to the terminal that is connected to described charging device to charge, and it is characterized in that, described charging device also comprises:
Loud speaker;
Audio input port is used for input audio signal;
Loudspeaker driving circuit links to each other with described audio input port with described loud speaker, is used for driving described loud speaker and plays described audio signal;
Power interface is connected with described loudspeaker driving circuit, is used in the situation that be connected to external power source, to described loudspeaker driving circuit power supply.
2. charging device according to claim 1 is characterized in that, also comprises:
At least one built-in power is connected with described loudspeaker driving circuit, is used for to described loudspeaker driving circuit power supply.
3. charging device according to claim 2 is characterized in that, also comprises:
Circuit is selected in power supply, described power supply selects an end of circuit to be connected to described loudspeaker driving circuit, the other end is connected to respectively described power interface and described built-in power, is used for according to the residing power supply environment of described charging device, selects to the mode of described loudspeaker driving circuit power supply.
4. charging device according to claim 3 is characterized in that, described power supply selects circuit also to comprise:
The power supply access detects electronic circuit, is connected with described power interface, whether is connected to described external power source for detection of described power interface;
The electrical source exchange electronic circuit, be used in the situation that described power interface is connected to described external power source, with described power interface and described loudspeaker driving circuit conducting, to power to described loudspeaker driving circuit, and in the situation that described power interface is not connected to described external power source, with described built-in power and described loudspeaker driving circuit conducting, to power to described loudspeaker driving circuit.
5. charging device according to claim 3 is characterized in that, described power supply selects circuit also to comprise:
The first voltage detecting electronic circuit is connected with described built-in power, for detection of the voltage of described built-in power;
Switch control electronic circuit, the voltage that is used for detecting described built-in power at described the first voltage detecting electronic circuit is lower than in the situation of the first default magnitude of voltage, cuts off described built-in power to the supply line of described loudspeaker driving circuit.
6. charging device according to claim 3 is characterized in that, also comprises voltage-regulating circuit and the first power control circuit, wherein:
One end of described voltage-regulating circuit is connected to described built-in power, the other end is connected to described the first power control circuit, and described voltage-regulating circuit also is connected to described power supply and selects circuit or described loudspeaker driving circuit, is used for the voltage of described built-in power is adjusted to the predeterminated voltage value;
Described the first power control circuit comprises:
Second voltage detects electronic circuit, is connected with described built-in power, for detection of the voltage of described built-in power;
The voltage control electronic circuit, be used for being lower than default second voltage value at the voltage that described second voltage detection electronic circuit detects described built-in power, and be higher than in the situation of the first default magnitude of voltage, send voltage control signal to described voltage-regulating circuit, open described voltage-regulating circuit, so that described built-in power is carried out the voltage adjustment.
7. charging device according to claim 6 is characterized in that, described voltage-regulating circuit comprises: booster circuit.
8. charging device according to claim 2 is characterized in that, also comprises:
Charging circuit, with described built-in power be connected power interface and be connected, be used in the situation that described power interface is connected to described external power source, to described built-in power charging.
9. charging device according to claim 8 is characterized in that, also comprises the second source control circuit, wherein,
Described second source control circuit comprises:
Tertiary voltage detects electronic circuit, is connected with described built-in power, for detection of the voltage of described built-in power;
Charging control electronic circuit is connected with described charging circuit, is used for sending charging control signal to described charging circuit when the voltage of described built-in power is less than or equal to default tertiary voltage value, so that described built-in power is charged.
10. each described charging device in 9 according to claim 1 is characterized in that, also comprises:
The loudspeaker switch circuit is connected to described loudspeaker driving circuit, is used for controlling the on off state of described loudspeaker driving circuit according to the power amplifier switch control signal that receives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411255 CN202749862U (en) | 2012-08-17 | 2012-08-17 | Charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411255 CN202749862U (en) | 2012-08-17 | 2012-08-17 | Charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202749862U true CN202749862U (en) | 2013-02-20 |
Family
ID=47709214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220411255 Expired - Lifetime CN202749862U (en) | 2012-08-17 | 2012-08-17 | Charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202749862U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110096254A (en) * | 2019-04-30 | 2019-08-06 | 努比亚技术有限公司 | Discharge road and the accessory using the circuit outside audio extension |
| CN113905124A (en) * | 2021-09-30 | 2022-01-07 | Oppo广东移动通信有限公司 | Audio control method, electronic equipment and audio playing system |
-
2012
- 2012-08-17 CN CN 201220411255 patent/CN202749862U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110096254A (en) * | 2019-04-30 | 2019-08-06 | 努比亚技术有限公司 | Discharge road and the accessory using the circuit outside audio extension |
| CN113905124A (en) * | 2021-09-30 | 2022-01-07 | Oppo广东移动通信有限公司 | Audio control method, electronic equipment and audio playing system |
| WO2023051083A1 (en) * | 2021-09-30 | 2023-04-06 | Oppo广东移动通信有限公司 | Audio control method, electronic device, and audio playback system |
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