Charging identification circuit and electronic equipment
By using a CC chip and identification module in the hardware circuit design of electronic devices, the problems of poor compatibility and high cost of charging interface identification are solved, achieving fast and accurate charging connection identification and reducing production costs.
Patent Information
- Application Number
- CN202520340423.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Traditional electronic device charging interfaces suffer from poor compatibility and high costs when identifying charging connection objects, making it impossible to achieve correct identification and connection.
The hardware circuit design employs a CC chip and an identification module. The CC chip is connected to the charging interface, and the identification module outputs an identification signal based on the voltage signal fed back by the CC chip, thereby enabling rapid identification of the charging connection object.
It improves the versatility of charging interfaces, reduces the production cost of electronic devices, and ensures the accuracy and efficiency of charging connections.
Smart Images
Figure CN223912264U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electronic equipment technical field especially, relate to a charging identification circuit and electronic equipment. BACKGROUND
[0002] The conventional electronic equipment charging interface relies on communication protocol when identifying charging connection object, causes the problem of incompatible between different manufacturers or different versions of protocol, cannot realize correct identification and connection, increases electronic equipment production cost. INVENTION CONTENTS
[0003] The utility model provides a kind of charging identification circuit and electronic equipment, to at least solve or improve the identification of the charging connection object of existing electronic equipment relying on communication protocol, there is the defect of poor compatibility and high cost.
[0004] The utility model provides a kind of charging identification circuit, comprising:
[0005] CC chip has CC1 end, DP end and DN end, the CC1 end and the DN end are configured to be connected with the VBUS end of charging interface respectively, the DP end is configured to be connected with the GND end of charging interface;
[0006] Identification module, the identification module is connected with the CC1 end, the DP end and the DN end respectively, and the identification module is configured to output the identification signal corresponding to the signal feedback by the CC1 end, the DP end and the DN end.
[0007] According to the charging identification circuit provided by the utility model, the CC1 end is connected with the VBUS end by first resistance;
[0008] And / or, the DP end is connected with the GND end by second resistance;
[0009] And / or, the DN end is connected with the VBUS end by third resistance.
[0010] According to the charging identification circuit provided by the utility model, the identification module is register.
[0011] The utility model further provides a kind of electronic equipment, comprising: shell, charging interface and the charging identification circuit as described above;The charging identification circuit is located in the shell, and the charging interface is located on the shell.
[0012] According to the electronic equipment provided by the utility model, further comprising:
[0013] Processor, the processor and the identification module are connected, and the processor outputs control signal according to the identification signal feedback by the identification module;
[0014] A display module is connected with the processor, and is configured to display charging information according to the control signal.
[0015] The electronic device further comprises:
[0016] A temperature measuring element is arranged on one side of the charging interface and connected with the processor, and is used for detecting temperature information at the charging interface.
[0017] A power management module is connected with the processor and a CC1 end of the CC chip, and is configured to be connected with an electric device of the electronic device.
[0018] The processor controls the power supply state of the power management module according to the temperature information fed back by the temperature measuring element.
[0019] The electronic device further comprises:
[0020] A current detection circuit is used for detecting charging current at the charging interface and feeding back the charging current to the processor.
[0021] A prompt module is connected with the processor, and the processor controls the prompt module to output prompt information according to the charging current fed back by the current detection circuit.
[0022] The electronic device further comprises a charging head, which is pluggably installed in the charging interface, and is configured to be detachably arranged in a charging base and electrically connected with the charging base.
[0023] The charging head comprises:
[0024] A plug is detachably inserted into the charging interface.
[0025] A base is arranged at one end of the plug and electrically connected with the plug.
[0026] The base is configured to be installed in the charging base, and the base has a charging contact point electrically connected with the charging base.
[0027] The charging head is provided with a first magnetic attraction element, and the first magnetic attraction element is configured to be attracted to a second magnetic attraction element on the charging base.
[0028] The charging recognition circuit and the electronic equipment provided by the utility model, through the configuration CC chip and the recognition module, because the CC chip is configured to connect with the charging interface, and the charging interface is connected with the charging connection object, when the charging connection object changes, the CC chip will feedback different voltage signals to the recognition module, the recognition module will output corresponding identification signals according to the voltage signals feedback by the CC chip, the identification signals can accurately identify the charging connection object of the electronic equipment, this design realizes the fast identification of the charging connection object of the charging interface by using the hardware circuit, compared with the communication protocol identification mode, the universality is strong, and it is helpful to reduce the cost of the electronic equipment. BRIEF DESCRIPTION OF DRAWINGS
[0029] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0030] Figure 1 It is the control structure block diagram of the electronic equipment provided by the utility model.
[0031] Figure 2 It is the circuit principle diagram of the electronic equipment provided by the utility model.
[0032] Figure 3 It is the structure schematic diagram that the electronic equipment, the charging seat and the charger are sequentially connected in the utility model.
[0033] Figure 4 It is the structure schematic diagram that the electronic equipment, the charging seat and the charger are sequentially connected in the utility model. Figure 3 It is the local enlarged schematic view of K part in the utility model.
[0034] Reference signs:
[0035] 1, electronic equipment;101, CC chip;102, recognition module;103, processor;104, display module;105, temperature measuring element;106, power management module;107, current detection circuit;108, prompt module;109, camera module;110, shell;120, charging interface;10, charging head;1001, plug;1002, base;1010, first magnetic attraction piece;
[0036] 2, charging seat;200, second magnetic attraction piece;
[0037] 3, charger. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0039] The charging identification circuit and the electronic equipment provided by the utility model embodiment will be described in detail in combination with specific embodiments and application scenarios. Figures 1-4
[0040] In the first aspect, as shown in Figure 1 and Figure 2 , the utility model embodiment provides a charging identification circuit, comprising: a CC chip 101 and an identification module 102.
[0041] The CC chip 101 has a CC1 end, a DP end and a DN end, the CC1 end and the DN end are respectively configured to be connected with a VBUS end of the charging interface 120, and the DP end is configured to be connected with a GND end of the charging interface 120.
[0042] The identification module 102 is connected with the CC1 end, the DP end and the DN end of the CC chip 101 respectively, and the identification module 102 is configured to output an identification signal corresponding to the signals fed back by the CC1 end, the DP end and the DN end.
[0043] It can be understood that the CC chip (Configuration Channel chip) is usually used in cooperation with the charging interface, the CC chip is taken as the power receiving end protocol chip of the charging interface, supports power receiving of specific power such as PD3.2 140W or PD3.1 EPR 240W, and can support EPR, AVS, PPS and various A port protocols.
[0044] Among them, the charging interface 120 can be a Type-C interface, a USB interface and other suitable charging interfaces, which are not specifically limited.
[0045] In actual application, at least one of the CC1 end, the DP end and the DN end of the CC chip 101 can be directly connected with the corresponding port on the charging interface 120, or can be connected with the corresponding port on the charging interface 120 through resistors, capacitors and inductors and other components, which are not specifically limited.
[0046] For the identification module 102, the identification module 102 can be a module capable of detecting the voltages of the CC1 end, the DP end and the DN end of the CC chip 101, for example, the identification module 102 is a voltage detection module, which can directly output the voltages of the CC1 end, the DP end and the DN end of the CC chip 101 as identification signals, or can output digital or analog signals capable of representing the voltages of the CC1 end, the DP end and the DN end as identification signals.
[0047] Of course, the identification module 102 can also be a module capable of responding to the voltages of the CC1 end, the DP end and the DN end of the CC chip 101 to output, for example, the identification module 102 is a register, when the charging connection object at the charging interface 120 changes, the voltages of the CC1 end, the DP end and the DN end of the CC chip 101 will change, the address of the register changes, which is specifically represented as the register outputting different values, and these different values represent different identification signals.
[0048] As can be seen from the above, the charging identification circuit provided by the utility model, through the configuration of CC chip 101 and identification module 102, since CC chip 101 is configured to be connected with charging interface 120, and charging interface 120 is connected with charging connection object, when the charging connection object changes, CC chip 101 will feedback different voltage signals to identification module 102, identification module 102 will output corresponding identification signals according to the voltage signals feedback by CC chip 101, and the identification signals can accurately identify the charging connection object of electronic equipment 1, and the design realizes the rapid identification of the charging connection object of charging interface 120 by using hardware circuit, compared with the communication protocol identification mode, the generality is strong, and it is helpful to reduce the cost of electronic equipment 1.
[0049] In some embodiments, as shown in Figure 2 The CC1 end of the CC chip 101 is connected with the VBUS end through the first resistor R1; and / or, the DP end of the CC chip 101 is connected with the GND end through the second resistor R2; and / or, the DN end of the CC chip 101 is connected with the VBUS end through the third resistor R3.
[0050] It can be understood that, in order to facilitate accurate detection of the charging connection object of the electronic equipment 1 in different application scenarios, at least one of the CC1 end, the DP end and the DN end of the CC chip 101 can be configured with a specific resistor, so as to ensure that the CC1 end, the DP end and the DN end of the CC chip 101 respectively feedback specific voltages in different application scenarios, and the specific voltages can facilitate the identification of the identification module 102.
[0051] In practical application, the identification module 102 selects the register, connects the CCl end of the CC chip 101 to the VBUS end through the first resistor R1, is used for detecting the connection state of the charging interface 120, and the resistance value of the first resistor R can be 56-60kΩ; connects the DP end of the CC chip 101 to the GND end through the second resistor R2, is used for disabling the data transmission function of the charging interface 120, and the resistance value of the second resistor R2 can be 510-560kΩ; connects the DN end of the CC chip 101 to the VBUS end through the third resistor R3, is used for detecting the power state, and the resistance value of the third resistor R3 can be 510-560kΩ.
[0052] Considering that the address signal (identification signal) of the register is different when the charging connection object of the charging interface 120 is different, the charging connection object of the charging interface 120 can be quickly identified according to the circuit design between the CC chip 101 and the charging interface 120 and in combination with the state detection or feedback of the register.
[0053] For example, when the charging interface 120 is not connected to any structure, the register obtains the first address signal according to the output signals of the DP end, the DM end and the CCl end of the CC chip 101; when the charging interface 120 is only connected to the charger 3 without connecting the power supply, the register obtains the second address signal according to the output signals of the DP end, the DM end and the CCl end of the CC chip 101; when the charging interface 120 is connected to the charger 3 and the power supply, the register obtains the third address signal according to the output signals of the DP end, the DM end and the CCl end of the CC chip 101; obviously, the first address signal, the second address signal and the third address signal respectively represent three connection states of the charging interface 120 relative to the charging connection object.
[0054] In the second aspect, as shown in Figure 1 and Figure 3 The utility model embodiment further provides an electronic equipment 1, include: shell 110, charging interface 120 and charging identification circuit as described above, charging identification circuit is located in the shell 110, and charging interface 120 is located on the shell 110.
[0055] It can be understood that the electronic equipment 1 can be a dictionary pen, a recording pen, a mobile phone and the like known in the art; the shell 110 can be configured in a strip shape, and the charging interface 120 is exposed on the surface of the shell 110, so that the charging interface 120 is electrically connected with other charging equipment; the charging interface 120 can be arranged at one end of the shell 110, or between two ends of the shell 110, and no specific limitation is made thereto.
[0056] Exemplarily, the charging interface 120 is arranged at the first end of the shell 110, and the second end of the shell 110 can be provided with the camera module 109 to realize scanning of graphic information based on the camera module 109.
[0057] Taking the electronic device 1 selecting a dictionary pen as an example, the charging interface 120 is arranged at one end of the dictionary pen, and the dictionary pen can be connected in communication with a notebook computer or the like through the charging interface 120, at this time, the charging interface 120 is only used for data transmission; of course, the dictionary pen can also be connected with the charging seat 2 based on the charging interface 120, but is not connected with the power supply, at this time, the charging seat 2 plays a role of placing the dictionary pen; the dictionary pen can also be connected with the charging seat 2 based on the charging interface 120, and the charging seat 2 is connected with the power supply to charge the dictionary pen based on the charging seat 2.
[0058] Since the electronic device 1 of the embodiment includes the charging identification circuit, the specific structure of the charging identification circuit refers to the above-mentioned embodiments, the electronic device 1 of the embodiment includes all the technical solutions of the above-mentioned embodiments, and therefore at least has all the beneficial effects obtained by all the technical solutions of the above-mentioned embodiments, which will not be repeated here.
[0059] In some embodiments, as shown in Figure 1 and Figure 3 The electronic device 1 further includes a processor 103 and a display module 104; the processor 103 is connected with the identification module 102, and the processor 103 outputs a control signal according to the identification signal fed back by the identification module 102; the display module 104 is connected with the processor 103, and the display module 104 is configured to display charging information according to the control signal.
[0060] It can be understood that the processor 103 can be a central processing unit (CPU), and the processor 103 is further connected in communication with the camera module 109 in addition to being connected in communication with the identification module 102 and the display module 104 respectively; the display module 104 can be a touch screen or a liquid crystal display screen, and the display module 104 is arranged on the surface of the shell 110, for example, the display module 104 is arranged on the front surface of the shell 110, and the display module 104 is arranged in a direction opposite to the direction of the lens of the camera module 109.
[0061] As shown in the above charging identification circuit, when the charging interface 120 is not connected to any structure, the register feeds back the first address signal to the processor 103, the processor 103 generates the first control signal according to the first address signal to control the display module 104 to display information representing that charging cannot be performed, or control the display module 104 to be in a black screen state; when the charging interface 120 is only connected to the charger 3 without being connected to the power supply, the register feeds back the second address signal to the processor 103, the processor 103 generates the second control signal according to the second address signal to control the display module 104 to display information representing that charging cannot be performed, and prompt the user to connect the charger 3 to the power supply, or control the display module 104 to be in a black screen state; when the charging interface 120 is connected to the charger 3 and connected to the power supply, the register feeds back the third address signal to the processor 103, the processor 103 generates the third control signal according to the third address signal to control the display module 104 to display charging information representing that charging is being performed, which can be a flashing charging icon or a charging progress bar for displaying the charging amount, which facilitates the user to intuitively understand the charging state of the electronic device 1.
[0062] It should be pointed out here that, in the process of charging the electronic device 1, the processor 103 controls the camera module 109 to stop running, and only when the electronic device 1 ends charging, the camera module 109 can start running in response to the control instruction input by the user to the processor 103.
[0063] In some embodiments, as shown in the above charging identification circuit, the electronic device 1 further comprises a temperature measuring element 105 and a power management module 106; the temperature measuring element 105 is arranged on one side of the charging interface 120 and connected to the processor 103, and is used to detect temperature information at the charging interface 120. Figure 1
[0064] The power management module 106 is connected to the processor 103 and the CC1 end of the CC chip 101 respectively, and is configured to be connected to the power-consuming devices of the electronic device 1; wherein the processor 103 controls the power supply state of the power management module 106 according to the temperature information fed back by the temperature measuring element 105.
[0065] It can be understood that the temperature measuring element 105 can be a thermistor, the resistance value of which decreases as the temperature rises, and vice versa, the resistance value of which increases as the temperature decreases.
[0066] At the same time, the power management module 106 includes a step-up and step-down unit for voltage regulation, a switching unit for power supply selection and switching, and a management unit for charging management (such as power detection and current limiting protection), which is a module known in the art and will not be described in detail here.
[0067] In the charging process, if there is foreign matter at the charging interface 120 or abnormality exists in the electrical connection between the charging interface 120 and the charging base 2, the temperature at the charging interface 120 will rise. When the temperature fed back by the temperature measuring element 105 is greater than a preset temperature, the processor 103 sends a control instruction to the power management module 106 to control the power management module 106 to be in an open circuit state to stop supplying power to the power consuming device of the electronic device 1, thereby ending the charging. Only after the factors causing the abnormal rise in the temperature of the charging interface 120 are ruled out, the power management module 106 can normally supply power to the power consuming device.
[0068] In some embodiments, as shown in Figure 1 The electronic device 1 further includes a current detection circuit 107 and a prompt module 108. The current detection circuit 107 is configured to detect the charging current at the charging interface 120 and feed back the charging current to the processor 103. The prompt module 108 is connected to the processor 103. The processor 103 controls the prompt module 108 to output prompt information according to the charging current fed back by the current detection circuit 107.
[0069] It can be understood that the current detection circuit 107 can adopt a Hall element or a resistance voltage dividing network to achieve the collection of the current between the charging interface 120 and the processor 103. The prompt module 108 can be a buzzer, an indicator light, a loudspeaker, or the like.
[0070] In actual application, if there is foreign matter at the charging interface 120 or the charging interface 120 is not well plugged with the charging head 10 or the charging interface 120 is plugged with the charging head 10 but there is a gap between the charging head 10 and the charging base 2, which results in too large contact resistance, these will cause the charging current at the charging interface 120 to be too large or too small. When the charging current fed back by the current detection circuit 107 exceeds the current threshold interval, the processor 103 controls the prompt module 108 to output prompt information to prompt the user to check the connection state of the charging link related to the electronic device 1.
[0071] Exemplarily, in the case where the prompt module 108 is an indicator light, the processor 103 can control the indicator light to blink to achieve the output of the prompt information.
[0072] Exemplarily, in the case where the prompt module 108 is a loudspeaker, the processor 103 can control the loudspeaker to emit voice information representing the charging abnormality to achieve the output of the prompt information, so as to ensure that the user can check the connection state of the charging link of the electronic device 1 in time according to the voice prompt.
[0073] In some embodiments, as shown in Figure 3 and Figure 4As shown, the electronic device 1 further comprises a charging head 10, which is pluggably installed in the charging interface 120, and is configured to be detachably arranged in the charging base 2 and electrically connected with the charging base 2.
[0074] It can be understood that when the charging head 10 is inserted into the charging interface 120, the electrical connection between the charging head 10 and the charging interface 120 is achieved, and the charging head 10 also plays a role in preventing foreign matter from entering the charging interface 120.
[0075] At the same time, the charging base 2 has a groove, and the end of the charging head 10 away from the charging interface 120 is adapted to the groove and can be electrically connected with the charging terminal in the groove. Wherein, the charging base 2 can be configured with a plug interface electrically connected with the charging terminal, and the plug interface is plugged with the plug 1001 of the charger 3.
[0076] In some embodiments, as shown in Figure 3 and Figure 4 As shown, the charging head 10 comprises a plug 1001 and a base 1002; the plug 1001 is detachably inserted into the charging interface 120; the base 1002 is arranged at one end of the plug 1001 and is electrically connected with the plug 1001; wherein the base 1002 is configured to be installed in the charging base 2, and the base 1002 has a charging contact point electrically connected with the charging base 2.
[0077] Specifically, the plug 1001 is flat, and the plug 1001 is adapted to the charging interface 120. For example, in the case that the charging interface 120 is a Type-C port, the plug 1001 is a Type-C head, and the two can be pluggably matched.
[0078] At the same time, the plug 1001 is electrically connected with the charging contact point on the base 1002, and the end of the base 1002 away from the plug 1001 is provided with a receiving groove, and the charging contact point is located in the receiving groove. The charging contact point can be a telescopic spring contact point, and the charging contact point is configured to be electrically connected with the charging terminal on the charging base 2.
[0079] In some embodiments, as shown in Figure 4 In order to ensure the convenience and reliability of the connection between the charging head 10 and the charging base 2, the charging head 10 is provided with a first magnetic attraction member 1010, which is configured to be attracted to a second magnetic attraction member 200 on the charging base 2.
[0080] Specifically, the first magnetic attraction member 1010 and the second magnetic attraction member 200 can each be a permanent magnet, the magnetic pole of one end of the first magnetic attraction member 1010 facing the second magnetic attraction member 200 being different from the magnetic pole of one end of the second magnetic attraction member 200 facing the first magnetic attraction member 1010; of course, one of the first magnetic attraction member 1010 and the second magnetic attraction member 200 can be a permanent magnet, and the other of the first magnetic attraction member 1010 and the second magnetic attraction member 200 can be a ferromagnetic member such as pure iron or a silicon steel sheet.
[0081] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A charging recognition circuit, characterized by, include: The CC chip has a CC1 terminal, a DP terminal and a DN terminal. The CC1 terminal and the DN terminal are respectively configured to be connected to the VBUS terminal of the charging interface, and the DP terminal is configured to be connected to the GND terminal of the charging interface. An identification module is connected to the CC1 terminal, the DP terminal, and the DN terminal respectively. The identification module is configured to output an identification signal corresponding to the signal fed back from the CC1 terminal, the DP terminal, and the DN terminal.
2. The charge identification circuit according to claim 1, characterized in that, The CC1 terminal is connected to the VBUS terminal through a first resistor; And / or, the DP terminal is connected to the GND terminal through a second resistor; And / or, the DN terminal is connected to the VBUS terminal via a third resistor.
3. The charge identification circuit of claim 1, wherein, The identification module is a register.
4. An electronic device, comprising: include: The housing, the charging interface, and the charging identification circuit as described in any one of claims 1 to 3; The charging identification circuit is located inside the housing, and the charging interface is located on the housing.
5. The electronic device of claim 4, wherein, Also includes: A processor is connected to the identification module, and the processor outputs a control signal based on the identification signal fed back by the identification module; A display module is connected to the processor and is configured to display charging information according to the control signal.
6. The electronic device of claim 5, wherein, Also includes: A temperature sensing element is located on one side of the charging interface and connected to the processor. The temperature sensing element is used to detect the temperature information at the charging interface. A power management module is connected to the processor and the CC1 terminal of the CC chip, respectively, and is configured to connect to the power-consuming components of the electronic device. The processor controls the power supply status of the power management module based on the temperature information fed back by the temperature sensing element.
7. The electronic device of claim 5, wherein, Also includes: A current detection circuit is used to detect the charging current at the charging interface and feed the charging current back to the processor; A prompting module is connected to the processor. The processor controls the prompting module to output prompting information based on the charging current fed back by the current detection circuit.
8. The electronic device of any of claims 4 to 7, wherein, Also includes: A charging head, which is pluggably installed in the charging interface, is configured to be detachably disposed in the charging base and electrically connected to the charging base.
9. The electronic device of claim 8, wherein, The charging head includes: A plug, which is detachably inserted into the charging port; A base, wherein the base is disposed at one end of the plug and is electrically connected to the plug; The base is configured to be installed in the charging dock, and the base has charging contacts that are electrically connected to the charging dock.
10. The electronic device of claim 8, wherein, The charging head is provided with a first magnetic attraction element, which is configured to attract a second magnetic attraction element on the charging base.