WO2015143625A1 - Batterie, terminal de communication, et système de communication - Google Patents

Batterie, terminal de communication, et système de communication Download PDF

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Publication number
WO2015143625A1
WO2015143625A1 PCT/CN2014/074034 CN2014074034W WO2015143625A1 WO 2015143625 A1 WO2015143625 A1 WO 2015143625A1 CN 2014074034 W CN2014074034 W CN 2014074034W WO 2015143625 A1 WO2015143625 A1 WO 2015143625A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
terminal
pass filter
low
inductor
Prior art date
Application number
PCT/CN2014/074034
Other languages
English (en)
Chinese (zh)
Inventor
宋刚
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to CN201480005014.0A priority Critical patent/CN105611982B/zh
Priority to PCT/CN2014/074034 priority patent/WO2015143625A1/fr
Publication of WO2015143625A1 publication Critical patent/WO2015143625A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a battery, a communication terminal, and a communication system. Background technique
  • NFC Near Field Communication
  • the NFC antenna is arranged on the battery of the communication terminal, and the communication terminal can be used as an airport boarding verification tool, a building access key, a traffic card, and the like. It brings a lot of convenience to people's lives.
  • the NFC antenna can be installed in the form of a built-in battery or a back-clip battery attached to the communication terminal, and realizes the NFC module (including the NFC front-end circuit and the communication terminal) by introducing two separate NFC antenna contacts.
  • NFC chip this form of installation requires an additional two contacts on the internal battery or back clip battery, more circuits must be introduced to transmit NFC AC signals.
  • Embodiments of the present invention provide a battery, a communication terminal, and a communication system to solve the problem of many battery contacts when an NFC antenna is disposed on a battery.
  • a first aspect of the embodiments of the present invention provides a battery, which may include:
  • a charging and discharging module configured to receive an external charging signal for charging or outputting a DC signal; a first low-pass filter for low-pass filtering the signal from the first path and transmitting the signal to the charging and discharging module, or The DC signal outputted by the charging and discharging module is low-pass filtered, and then sequentially transmitted to the power management chip of the communication terminal through the first path and the second low-pass filter of the communication terminal, where the communication terminal uses the Battery terminal;
  • a near field communication antenna configured to receive a first near field communication AC signal, or to transmit a second near field communication AC signal
  • a high-pass filter for high-pass filtering the signal from the first path to form the second near-field communication AC signal, and transmitting the second near-field communication AC signal to the near field communication antenna; Or high-pass filtering the first near field communication AC signal received by the near field communication antenna Thereafter, transmitting to the near field communication module of the communication terminal through the first path.
  • the first path is an electrical connection path between the first low pass filter and the second low pass filter.
  • the battery is a back-clip battery
  • the charging and discharging module includes a charging chip and a battery core
  • the battery cell is connected to the charging chip, the grounding end of the charging chip is grounded, the first path includes a first branch and a second branch, and the voltage output end of the charging chip passes the first low-pass filtering
  • the first branch and the second low pass filter are connected to a first voltage input pin of the power management chip of the communication terminal, the grounding pin of the power management chip is grounded, and the power management chip is a second voltage input pin is grounded through the second low pass filter, the second branch, and the first low pass filter;
  • the high pass filter is coupled to the two ports of the near field communication module through the first branch and the second branch, respectively.
  • the battery is a built-in battery of the communication terminal
  • the first path includes a first branch And the second branch
  • the charging and discharging module includes a voltage output end, a ground end, a temperature detecting end and a battery identification end, wherein the voltage output end is connected to a voltage input pin of the power management chip of the communication terminal, and the grounding
  • the ground detecting end is connected to the temperature detecting pin of the power management chip of the communication terminal by the first low pass filter, the first branch and the second low pass filter
  • the battery identification end is connected to the battery identification pin of the power management chip of the communication terminal through the first low pass filter, the second branch and the second low pass filter;
  • the high pass filter is coupled to the two ports of the near field communication module through the first branch and the second branch, respectively.
  • the first low-pass filter includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor a first end of the first inductor connected to the first end of the first capacitor, a second end of the first capacitor being grounded, and a second end of the first inductor a first end of the second capacitor, a second end of the second capacitor is grounded, and a common node of the first inductor and the first capacitor is connected to a voltage output end of the charging chip or a temperature detecting end of the discharge module is connected, a common node of the first inductor and the second capacitor is a first output end of the first low pass filter, and the second a first input of the low pass filter is connected;
  • the first end of the second inductor is connected to the first end of the third capacitor, the second end of the third capacitor is grounded, and the second end of the second inductor is connected to the first end of the fourth capacitor
  • the second end of the fourth capacitor is grounded, the second inductor is grounded to a common node of the third capacitor or connected to a battery identification end of the charging and discharging module, and the second inductor and the fourth A common node of the capacitor is a second output of the first low pass filter coupled to a second input of the second low pass filter.
  • the high-pass filter includes a fifth capacitor, a sixth capacitor, a seventh capacitor, a eighth capacitor, a third inductor, and a third a fourth inductor
  • the second end of the fifth capacitor is connected in series with the first end of the sixth capacitor
  • the first end of the third inductor is connected to a common node of the fifth capacitor and the sixth capacitor
  • the second end of the third inductor is grounded
  • the second end of the seventh capacitor is connected in series with the first end of the eighth capacitor
  • the first end of the fourth inductor is connected to the seventh capacitor and the first a common node of the eight capacitors
  • the second end of the fourth inductor is grounded
  • the first end of the fifth capacitor is connected to a common node of the first inductor and the second capacitor
  • the seventh capacitor is One end is connected to a common node of the second inductor and the fourth capacitor
  • the second end of the sixth capacitor and the first end of the eighth capacitor are respectively connected
  • a second aspect of the embodiments of the present invention provides a communications terminal, which may include:
  • a power management chip configured to receive a DC signal from the second low pass filter, and manage power supply of the communication terminal
  • the second low pass filter is configured to low pass filter the signal from the first path to the power management chip, and the signal from the first path includes a first low pass filter pair of the battery a signal outputted by the DC signal outputted by the charging and discharging module of the battery after low-pass filtering, wherein the battery supplies power to the communication terminal;
  • a near field communication module configured to receive a first near field communication AC signal that is high pass filtered by the high pass filter of the battery and transmitted through the first path, or output a second near field communication exchange through the first path Transmitting a signal to the high pass filter to enable the high pass filter to high pass filter the second near field communication AC signal to be transmitted to a near field communication antenna of the battery, wherein the first near field communication communication A signal is received by the near field communication antenna.
  • the first path is an electrical connection path between the first low pass filter and the second low pass filter.
  • the battery is a back-clip battery
  • the charging and discharging module includes a charging chip and a battery core, and the electric The core is connected to the charging chip, the grounding end of the charging chip is grounded, the first path includes a first branch and a second branch, the grounding pin of the power management chip is grounded, and the power management chip is a voltage input pin is connected to the voltage output end of the charging chip through the second low pass filter, the first branch and the first low pass filter, and the second voltage input of the power management chip a bow I is grounded through the second low pass filter, the second branch, and the first low pass filter;
  • the near field communication module includes two ports connected to the high pass filter through the first branch and the second branch, respectively.
  • the battery is a built-in battery of the communication terminal, the first path includes a first branch and a second branch, and the charging and discharging module includes a voltage output end, a ground end, a temperature detecting end, and a battery identification end.
  • a voltage input pin of the power management chip is connected to a voltage output end of the charging and discharging module, a ground pin of the power management chip is grounded, and a temperature detecting pin of the power management chip passes the second low pass filter
  • the first branch and the first low pass filter are connected to the temperature detecting end of the charging and discharging module, and the battery identification pin of the power management chip passes the second low pass filter, the first The two branches and the first low pass filter are connected to the battery mark end of the charging and discharging module;
  • the near field communication module includes two ports connected to the high pass filter through the first branch and the second branch, respectively.
  • the second low-pass filter includes a ninth capacitor, a tenth capacitor, an eleventh capacitor, and a tenth a second capacitor, a fifth inductor, and a sixth inductor, wherein the first end of the fifth inductor is connected to the first end of the ninth capacitor, the second end of the ninth capacitor is grounded, and the second inductor is second Terminating the first end of the tenth capacitor, the second end of the tenth capacitor is grounded, and the common node of the fifth inductor and the ninth capacitor is the first input of the second low pass filter And connecting to the first output end of the first low pass filter, the common node of the fifth inductor and the tenth capacitor, and the first voltage input pin or the temperature detecting pin of the power management chip Connecting, the first end of the sixth inductor is connected to the first end of the eleventh capacitor, the second end of the eleventh capacitor is grounded, and the second end of the sixth inductor is connected
  • a third aspect of the embodiments of the present invention provides a communication system, which may include:
  • the battery includes:
  • a charging and discharging module configured to receive an external charging signal for charging or outputting a DC signal; a first low-pass filter for low-pass filtering the signal from the first path and transmitting the signal to the charging and discharging module, or The DC signal outputted by the charging and discharging module is low-pass filtered and transmitted to the power management chip of the communication terminal through the first path and the second low-pass filter of the communication terminal;
  • a near field communication antenna configured to receive a first near field communication AC signal, or to transmit a second near field communication AC signal
  • a high-pass filter for high-pass filtering the signal from the first path to form the second near-field communication AC signal, and transmitting the second near-field communication AC signal to the near field communication antenna; Or performing high-pass filtering on the first near field communication AC signal received by the near field communication antenna, and transmitting to the near field communication module of the communication terminal through the first path;
  • the communication terminal includes:
  • a power management chip configured to receive a DC signal from the second low pass filter, and manage power supply of the communication terminal
  • the second low pass filter is configured to low pass filter the signal from the first path to the power management chip, and the signal from the first path includes a first low pass filter pair of the battery a signal output by low-pass filtering of a DC signal outputted by a charging and discharging module of the battery, wherein the communication terminal is a terminal using the battery;
  • a near field communication module configured to receive a first near field communication AC signal that is high pass filtered by the high pass filter and transmitted through the first path, or output a third near field communication AC signal to the first path,
  • the second near field communication AC signal is obtained by high pass filtering of the third near field communication AC signal via the high pass filter.
  • the first path is an electrical connection path between the first low pass filter and the second low pass filter.
  • the battery is a back-clip battery
  • the charging and discharging module includes a charging chip and a battery core
  • the battery cell is connected to the charging chip, the grounding end of the charging chip is grounded
  • the first path includes a first branch and a second branch, and the voltage output end of the charging chip passes the first low-pass filtering
  • the first branch and the second low pass filter are connected to a first voltage input pin of the power management chip of the communication terminal, the grounding pin of the power management chip is grounded, and the power management chip is a second voltage input pin is grounded through the second low pass filter, the second branch, and the first low pass filter;
  • the high pass filter is coupled to the two ports of the near field communication module through the first branch and the second branch, respectively.
  • the battery is a built-in battery of the communication terminal
  • the first path includes a first branch And the second branch
  • the charging and discharging module includes a voltage output end, a ground end, a temperature detecting end and a battery identification end, wherein the voltage output end is connected to a voltage input pin of the power management chip of the communication terminal, and the grounding
  • the ground detecting end is connected to the temperature detecting pin of the power management chip of the communication terminal by the first low pass filter, the first branch and the second low pass filter
  • the battery identification end is connected to the battery identification pin of the power management chip of the communication terminal through the first low pass filter, the second branch and the second low pass filter;
  • the high pass filter is coupled to the two ports of the near field communication module through the first branch and the second branch, respectively.
  • the first low-pass filter includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor and a second inductor, a first end of the first inductor is connected to a first end of the first capacitor, a second end of the first capacitor is grounded, and a second end of the first inductor is connected a first end of the second capacitor, the second end of the second capacitor is grounded, and the common node of the first inductor and the first capacitor is connected to the voltage output end of the charging chip or the charging and discharging a temperature detecting end of the module is connected, a common node of the first inductor and the second capacitor is a first output end of the first low pass filter, and a first input end of the second low pass filter Connection
  • the first end of the second inductor is connected to the first end of the third capacitor, the second end of the third capacitor is grounded, and the second end of the second inductor is connected to the first end of the fourth capacitor
  • the second of the fourth capacitor is connected to the common node of the third capacitor or to the battery identification end of the charging and discharging module, and the common node of the second inductor and the fourth capacitor is the first
  • a second output of the low pass filter is coupled to the second input of the second low pass filter.
  • the second low-pass filter includes a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a fifth inductor and a sixth inductor, the first end of the fifth inductor is connected to the first end of the ninth capacitor, the second end of the ninth capacitor is grounded, and the second end of the fifth inductor is connected a first end of the tenth capacitor, a second end of the tenth capacitor is grounded, and a common node of the fifth inductor and the ninth capacitor is a first input end of the second low pass filter, and a first output end of the first low pass filter is connected, and a common node of the fifth inductor and the tenth capacitor is connected to a first voltage input pin or a temperature detecting pin of the power management chip.
  • a first end of the sixth inductor is connected to the first end of the eleventh capacitor, a second end of the eleventh capacitor is grounded, and a second end of the sixth inductor is connected to the twelfth capacitor One end, the second end of the twelfth capacitor is grounded, and the sixth inductor is a common node of the eleventh capacitor is a second input end of the second low pass filter, and is connected to a second output end of the first low pass filter, the sixth inductor and the twelfth
  • the common node of the capacitor is connected to the second voltage input pin of the power management chip or the battery identification pin.
  • the NFC AC signal can be prevented from being attenuated by the transmission path of the DC signal, and the transmission path of the DC signal can be prevented from being short-circuited by the NFC antenna, and the NFC AC signal and the DC signal do not interfere with each other.
  • multiplexing the transmission path of the NFC AC signal with the transmission path of the DC signal there is no need to add two additional contacts to the NFC antenna on the battery, which reduces the number of contacts on the battery and reduces the extra transmission path. It can also reduce the occurrence of contact failures due to more contacts, which saves the manufacturing cost of the battery and is convenient to use.
  • FIG. 1 is a schematic view showing the composition of a first embodiment of a battery of the present invention
  • 2 is a schematic view showing the connection of the battery shown in FIG. 1 and a communication terminal;
  • FIG. 3 is a schematic diagram of a second embodiment of a battery of the present invention connected to a communication terminal;
  • FIG. 4 is a schematic diagram of a third embodiment of a battery of the present invention connected to a communication terminal;
  • Figure 5 is a schematic diagram showing the circuit configuration of the first low-pass filter in the first to third embodiments of the battery of the present invention.
  • Figure 6 is a schematic view showing the circuit configuration of the high-pass filter in the first to third embodiments of the battery of the present invention.
  • FIG. 7 is a schematic structural diagram of a first embodiment of a communication terminal according to the present invention.
  • FIG. 8 is a schematic diagram of the composition of a communication system according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic diagram of the composition of the first embodiment of the battery of the present invention
  • FIG. 2 is a schematic diagram of the connection of the battery of FIG. 1 with a communication terminal
  • the battery includes
  • the charging and discharging module 100 is configured to receive an external charging signal for charging or outputting a DC signal.
  • the first low-pass filter 200 is configured to perform low-pass filtering on the signal from the first path and transmit the signal to the charging and discharging module 100.
  • the DC signal outputted by the charging and discharging module 100 is low-pass filtered, and then sequentially transmitted to the power management chip 600 of the communication terminal through the first path and the second low-pass filter 500 of the communication terminal.
  • the communication terminal is a terminal using the battery;
  • a near field communication antenna 400 configured to receive a first near field communication AC signal, or to transmit a second near field communication AC signal;
  • a high-pass filter 300 configured to perform high-pass filtering on the signal from the first path to form the second near-field communication AC signal, and transmit the second near-field communication AC signal to the near field communication antenna Or transmitting the first near field communication AC signal received by the near field communication antenna 400 to the near field communication module 700 of the communication terminal through the first path after high pass filtering.
  • the first path is an electrical connection path between the first low pass filter and the second low pass filter.
  • the charging and discharging module 100 is connected to an input end of the first low pass filter 200, and an output end of the first low pass filter 200 and an input of a second low pass filter 500 in the communication terminal.
  • the output terminal of the second low-pass filter 500 is connected to the power management chip 600 of the communication terminal, and the power management chip 600 is configured to receive a DC signal from the second low-pass filter, and manage the communication terminal.
  • the DC signal may be a charged voltage or current DC signal, or may be a voltage or current DC signal of the power supply, or may detect a DC signal or a battery identification (ID) DC signal of the battery temperature.
  • ID battery identification
  • the near field communication antenna 400 is connected to an input end of the high pass filter 300, and an output end of the high pass filter 300 is connected to an output end of the first low pass filter 200, the second low pass filter
  • the input end of the device 500 is connected to the near field communication module 700 in the communication terminal;
  • the first low pass filter 200 and the second low pass filter 500 are both used to block the passage of a near field communication AC signal, and the high pass filter 300 is used to block the passage of a DC signal.
  • the transmission path attenuation of the NFC AC signal through a DC signal such as a voltage DC signal, a current DC signal, a battery temperature detection DC signal, or a battery identification DC signal can be avoided, and The transmission path of the DC signal is prevented from being short-circuited by the NFC antenna, and the NFC AC signal and the DC signal do not interfere with each other.
  • a DC signal such as a voltage DC signal, a current DC signal, a battery temperature detection DC signal, or a battery identification DC signal
  • the transmission path of the DC signal is prevented from being short-circuited by the NFC antenna, and the NFC AC signal and the DC signal do not interfere with each other.
  • the contacts reduce the number of contacts on the battery, reduce the extra transmission path, and reduce the number of contacts, which can easily lead to line contact errors, saving the manufacturing cost of the battery and making it easy to use.
  • the near field communication module 700 may include, but is not limited to, an NFC front end circuit and an NFC chip, and the NFC front end circuit may include a DC blocking circuit to prevent the DC signal from being transmitted to the NFC chip.
  • a second embodiment of the battery of the present invention is connected to a communication terminal.
  • the battery is a back-clip battery
  • the charging and discharging module 100 includes a charging chip 110 and a battery core 120.
  • the battery core 120 is connected to the charging chip 110, the grounding end of the charging chip 110 is grounded, the first path includes a first branch and a second branch, and the voltage output end of the charging chip 110 passes through
  • the first low pass filter 200, the first branch and the second low pass filter 500 are connected to a first voltage input pin of the power management chip 600 of the communication terminal, and the power management chip 600 Grounding pin is grounded, and the second voltage input pin of the power management chip 600 passes the second a low pass filter 500, the second branch, and the first low pass filter 200 are grounded;
  • the high pass filter 300 is coupled to the two ports of the near field communication module 700 through the first branch and the second branch, respectively.
  • the battery Since the battery is a back-clip battery, the battery can charge the built-in battery of the communication terminal through the universal serial bus interface of the communication terminal or directly supply power to the communication terminal, and the NFC antenna can pass high-pass filtering whether it is power supply or charging.
  • the cooperation between the device and the low-pass filter realizes multiplexing of the NFC AC signal transmission path with the power supply DC path or the charging DC path, and the transmission of the NFC AC signal does not conflict with the transmission of the power supply DC signal or the charging DC signal.
  • a schematic diagram of a third embodiment of a battery of the present invention is connected to a communication terminal.
  • the battery is a built-in battery of the communication terminal
  • the first path includes a first branch and a second branch
  • the charging and discharging module 100 includes a voltage output end, a ground end, a temperature detecting end, and a battery identification end, wherein the voltage output terminal is connected to a voltage input pin of the power management chip 600 of the communication terminal, The ground terminal is grounded, and the temperature detecting end is connected to the temperature detecting lead of the power management chip 600 of the communication terminal by the first low pass filter 200, the first branch and the second low pass filter 500.
  • a battery identification pin of the power management chip 600 of the communication terminal is connected to the battery identification end through the first low pass filter 200, the second branch, and the second low pass filter 500;
  • the high pass filter 300 is coupled to the two ports of the near field communication module through the first branch and the second branch, respectively.
  • the battery is a built-in battery of the communication terminal, only the communication terminal can be powered.
  • the battery cell can cooperate with the battery casing and the charging circuit, and the charging and discharging module 100 can be composed of the battery cell and the battery casing and the charging circuit.
  • four ports can be arranged on the battery casing, including the voltage output terminal.
  • the ground terminal, the temperature detecting end and the battery marking end, the voltage output end is used for outputting voltage, and is used for supplying power to the communication terminal, and can be connected to the voltage input pin of the power management chip 600 in the communication terminal; the grounding end can be connected with the power management chip 600
  • the grounding pin is connected or directly grounded;
  • the temperature detecting end is used to detect the temperature of the battery and transmit the temperature DC signal to the communication terminal at a normal time, and can be connected to the temperature detecting pin of the power management chip 600;
  • the power identification (ID) end The utility model is configured to identify the battery according to a parameter such as a battery voltage, and send the identified battery identification DC signal to the communication terminal, and can be connected to the battery identification pin of the power management chip 600, and the two transmission paths of the NFC AC signal can respectively be respectively related to the temperature.
  • the DC signal transmission path and the battery identification DC signal transmission path are multiplexed, and then passed through the high-pass filter. Used in conjunction with low pass filter, temperature detection can be realized a DC signal, a DC signal and cell identification cross NFC The transmission of the stream signals does not interfere with each other and there is no need to add new contacts and lines.
  • FIG. 5 is a schematic diagram showing the circuit structure of the first low-pass filter in the first to third embodiments of the battery of the present invention.
  • the first low-pass filter includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first inductor L1, and a second inductor L2, where the first inductor L1 a first end of the first capacitor C1, a second end of the first capacitor C1 is grounded, and a second end of the first inductor L1 is connected to the first end of the second capacitor L2 The second end of the second capacitor C2 is grounded, and the common node of the first inductor L1 and the first capacitor C1 is connected to the voltage output end of the charging chip or to the temperature detecting end of the charging and discharging module.
  • a common node of the first inductor L1 and the second capacitor C2 is a first output end of the first low pass filter, and is connected to a first input end of the second low pass filter;
  • the first end of the second inductor L2 is connected to the first end of the third capacitor C3, the second end of the third capacitor C3 is grounded, and the second end of the second inductor L2 is connected to the fourth capacitor a first end of the C4, the second end of the fourth capacitor C4 is grounded, and the second inductor L2 is connected to a common node of the third capacitor C3 or to a battery identification end of the charging and discharging module.
  • the common node of the second inductor L2 and the fourth capacitor C4 is a second output end of the first low pass filter, and is connected to a second input end of the second low pass filter.
  • the second low-pass filter is similar to the circuit structure of the first low-pass filter, and may include: a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, and a fifth An inductor L5 and a sixth inductor L6, a first end of the fifth inductor L5 is connected to the first end of the ninth capacitor C9, a second end of the ninth capacitor C9 is grounded, and the fifth inductor L5 is The second end of the tenth capacitor C10 is grounded, the second end of the tenth capacitor C10 is grounded, and the common node of the fifth inductor L5 and the ninth capacitor C9 is the second low pass filter.
  • the first input end of the device is connected to the first output end of the first low pass filter, the common node of the fifth inductor L5 and the tenth capacitor C 10 and the first voltage of the power management chip
  • An input pin or a temperature detecting pin is connected, a first end of the sixth inductor L6 is connected to the first end of the eleventh capacitor C11, and a second end of the eleventh capacitor C11 is grounded, the sixth The second end of the inductor L6 is connected to the first end of the twelfth capacitor C12, and the second end of the twelfth capacitor C12 is grounded.
  • a common node of the sixth inductor L6 and the eleventh capacitor C11 is a second input end of the second low pass filter, and is connected to a second output end of the first low pass filter, a sixth node L6 and a common node of the twelfth capacitor C12 and the power source
  • the second voltage input pin or battery identification pin of the management chip is connected.
  • the parameters of the inductor and the capacitor in this embodiment may be adjusted according to actual test conditions, wherein the design requirements of the first low pass filter and the second low pass filter generally need to meet the insertion loss of the NFC AC signal of 13.56 Mhz. More than -30dB, so that the NFC AC signal cannot pass.
  • the capacitance of all four capacitors in any low-pass filter is 2nF, and the inductance of both inductors is 560nH, which provides good signal blocking.
  • FIG. 6 is a schematic structural diagram of a circuit of the high-pass filter in the first to third embodiments of the battery of the present invention.
  • the high-pass filter includes a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a third inductor L3, and a fourth inductor L4, and the second end of the fifth capacitor C5
  • the first end of the third inductor L3 is connected to a common node of the fifth capacitor C5 and the sixth capacitor C6, and the second end of the third inductor L3 is
  • the second end of the seventh capacitor C7 is connected in series with the first end of the eighth capacitor C8, and the first end of the fourth inductor L4 is connected to the seventh capacitor C7 and the eighth capacitor C8.
  • the second end of the fourth inductor L4 is grounded, and the first end of the fifth capacitor C5 is connected to a common node of the first inductor L1 and the second capacitor C2 shown in FIG.
  • the first end of the seventh capacitor C7 is connected to a common node of the second inductor L2 and the fourth capacitor C4 shown in FIG. 5, and the second end of the sixth capacitor C6 and the eighth capacitor
  • the first ends of C8 are respectively connected to the two ports of the near field communication antenna.
  • the parameters of the inductor and the capacitor in this embodiment may be adjusted according to actual test conditions, wherein the design requirement of the high-pass filter only needs to ensure that the charging or power supply or temperature detection or the DC signal of the battery identification cannot pass.
  • the capacitance of all four capacitors in the high-pass filter is 0.5nF
  • the inductance of both inductors is 780nH, which provides good signal blocking.
  • FIG. 7 is a schematic diagram of the composition of the first embodiment of the communication terminal according to the present invention
  • FIG. 2 is a schematic diagram of the connection between the battery and the communication terminal shown in FIG. 1, in the embodiment, the communication The terminal can include:
  • a power management chip 600 configured to receive a DC signal from the second low pass filter 500, and manage power supply of the communication terminal;
  • the second low pass filter 500 is configured to perform low pass filtering on the signal from the first path to the power management chip 600, where the signal from the first path includes a first low pass filter of the battery 200 is configured to perform low-pass filtering on the DC signal outputted by the charging and discharging module 100 of the battery. Signaling, the battery is powered by the communication terminal;
  • the near field communication module 700 is configured to receive a first near field communication AC signal that is high pass filtered by the high pass filter 300 of the battery and transmitted through the first path, or output a second near field through the first path Communicating an AC signal to the high pass filter 300 to cause the high pass filter 300 to high pass filter the second near field communication AC signal to be transmitted to a near field communication antenna of the battery, wherein the first The near field communication AC signal is received by the near field communication antenna 400.
  • the first path is an electrical connection path between the first low pass filter and the second low pass filter.
  • the near field communication module 700 may include, but is not limited to, an NFC front end circuit and an NFC chip, and the NFC front end circuit may include a DC blocking circuit to prevent DC signals from being transmitted to the NFC chip.
  • the battery may be a back-clip battery
  • the charging and discharging module may include a charging chip 110 and a battery core 120, the battery core
  • the grounding end of the charging chip 110 is grounded, the first path includes a first branch and a second branch, and the grounding pin of the power management chip 600 is grounded, the power management
  • the first voltage input pin of the chip 600 is connected to the voltage output end of the charging chip 110 through the second low pass filter 500, the first branch and the first low pass filter 200, the power source
  • a second voltage input pin of the management chip 600 is grounded through the second low pass filter 500, the second branch, and the first low pass filter.
  • the near field communication module 700 includes two ports that are coupled to the high pass filter 300 through the first branch and the second branch, respectively.
  • the battery may be a built-in battery of the communication terminal, and the first path includes a first branch and a second branch.
  • the charging and discharging module 100 includes a voltage output terminal, a grounding terminal, a temperature detecting terminal, and a battery identification terminal.
  • the voltage input pin of the power management chip 600 is connected to the voltage output terminal of the charging and discharging module 100.
  • the ground pin of the management chip 600 is grounded or connected to the ground of the charge and discharge module 100, and the temperature detecting pin of the power management chip 600 passes through the second low pass filter 500, the first branch and the The first low pass filter 200 is connected to the temperature detecting end of the charging and discharging module 100, and the battery identification pin of the power management chip 600 passes through the second low pass filter 500, the second branch and the The first low pass filter 200 is connected to the battery mark end of the charging and discharging module.
  • the near field communication module 700 includes two ports, respectively, through the first branch and the second The branch is connected to the high pass filter 300.
  • the second low pass filter 500 may include a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a fifth inductor L5, and a sixth inductor L6, where the The first end of the fifth inductor L5 is connected to the first end of the ninth capacitor C9, the second end of the ninth capacitor C9 is grounded, and the second end of the fifth inductor L5 is connected to the tenth capacitor C10 One end, the second end of the tenth capacitor C10 is grounded, and the common node of the fifth inductor L5 and the ninth capacitor C9 is the first input end of the second low pass filter, and the first a first output end of a low pass filter is connected, and a common node of the fifth inductor L5 and the tenth capacitor C10 is connected to a first voltage input pin or a temperature detecting pin of the power management chip, The first end of the sixth inductor L6 is connected to the first end of the eleventh capacitor C11
  • circuit structure and device parameters of the second low-pass filter may be referred to the circuit structure diagram of the first low-pass filter shown in FIG. 5, and details are not described herein again.
  • the communication system may include:
  • the battery 10 includes:
  • the charging and discharging module 100 is configured to receive an external charging signal for charging or outputting a DC signal.
  • the first low-pass filter 200 is configured to perform low-pass filtering on the signal from the first path and transmit the signal to the charging and discharging module 100, or Performing low-pass filtering on the DC signal outputted by the charging and discharging module 100, and transmitting the DC signal to the power management chip 600 of the communication terminal through the first path and the second low-pass filter 500 of the communication terminal;
  • a near field communication antenna 400 configured to receive a first near field communication AC signal, or to transmit a second near field communication AC signal;
  • the communication terminal 20 includes:
  • a power management chip 600 configured to receive a DC signal from the second low pass filter 500, and manage power supply of the communication terminal;
  • the second low pass filter 500 is configured to perform low pass filtering on the signal from the first path to the power management chip 600, where the signal from the first path includes a first low pass filter of the battery 10 a signal obtained by low-pass filtering the DC signal outputted by the charging and discharging module 100 of the battery 10, and the communication terminal 20 is a terminal using the battery 10;
  • the near field communication module 700 is configured to receive a first near field communication AC signal that is high pass filtered by the high pass filter 300 and transmitted through the first path, or output a third near field communication AC signal to the first The path, the second near field communication AC signal is obtained by high-pass filtering the third near field communication AC signal through the high pass filter 300.
  • the first path is an electrical connection path between the first low pass filter 200 and the second low pass filter 500.
  • the near field communication module 700 may include, but is not limited to, an NFC front end circuit and an NFC chip, and the NFC front end circuit may include a DC blocking circuit to prevent DC signals from being transmitted to the NFC chip.
  • the combination of the battery 10 and the communication terminal 20 can also refer to the contents shown in FIG. 3 and FIG. 4 and related description.
  • the battery is a back-clip battery, and the charging and discharging are performed.
  • the module 100 includes a charging chip 110 and a battery core 120.
  • the battery core 120 is connected to the charging chip 110, the grounding end of the charging chip 110 is grounded, and the first path includes a first branch and a second branch.
  • the voltage output end of the charging chip 110 is connected to the first voltage of the power management chip 600 of the communication terminal through the first low pass filter 200, the first branch and the second low pass filter 500.
  • An input pin, a grounding pin of the power management chip 600 is grounded, and a second voltage input pin of the power management chip 600 passes through the second low pass filter 500, the second branch, and the first The low pass filter 200 is grounded;
  • the high pass filter 300 is coupled to the two ports of the near field communication module 700 through the first branch and the second branch, respectively.
  • the battery can supply or charge the power management chip 600 of the mobile terminal through the battery core 120 and the charging chip 110, and the transmission path of the NFC AC signal received by the near field communication antenna can be connected to the power supply.
  • the circuit or the charging path is multiplexed, and the signal is separated by the cooperation of the low-pass filter and the high-pass filter.
  • the battery may also be a built-in battery of the communication terminal.
  • the first path includes a first branch and a second branch
  • the charging and discharging module 100 includes a voltage output end and a ground.
  • the voltage output terminal is connected to the voltage input pin of the power management chip 700 of the communication terminal, the ground terminal is grounded, and the temperature detecting end passes the first low-pass filtering.
  • the first branch and the second low pass filter 500 are connected to a temperature detecting pin of the power management chip 700 of the communication terminal, and the battery identification end passes through the first low pass filter 200.
  • the second branch and the second low pass filter 500 are connected to the battery identifier of the power management chip 600 of the communication terminal.
  • the high pass filter 300 is coupled to the two ports of the near field communication module 700 through the first branch and the second branch, respectively.
  • the NFC AC signal is transmitted through the existing battery temperature DC detection signal transmission path and the battery identification DC signal transmission path, and the low-pass filter and the high-pass filter are used to cooperate with the blocking signal to realize line multiplexing, wherein, low-pass filtering
  • the specific circuit structure of the high-pass filter and the high-pass filter can be referred to the circuit structure shown in FIG. 5 and FIG. 6, and details are not described herein again.
  • the present invention has the following advantages:
  • the NFC AC signal can be prevented from being attenuated by the transmission path of the DC signal, and the transmission path of the DC signal can be prevented from being short-circuited by the NFC antenna, and the NFC AC signal and the DC signal do not interfere with each other.
  • multiplexing the transmission path of the NFC AC signal with the transmission path of the DC signal there is no need to add two additional contacts to the NFC antenna on the battery, which reduces the number of contacts on the battery and reduces the extra transmission path. It can also reduce the occurrence of contact failures due to more contacts, which saves the manufacturing cost of the battery and is convenient to use.
  • the foregoing storage medium when the program is executed, the steps including the foregoing method embodiments are performed; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne une batterie. La batterie comprend : un module de charge et de décharge, servant à recevoir un signal de charge externe afin d'effectuer une charge ou de délivrer en sortie un signal de courant continu ; un premier filtre passe-bas, utilisé pour effectuer un filtrage passe-bas d'un signal provenant d'un premier chemin et transmettre le signal filtré au module de charge et de décharge, ou effectuer un filtrage passe-bas du signal de courant continu et transmettre le signal de courant continu filtré à une puce de gestion d'énergie par le premier chemin et un second filtre passe-bas ; une antenne CCP, utilisée pour recevoir un premier signal de courant alternatif CCP ou transmettre un second signal de courant alternatif CCP ; un filtre passe-haut, utilisé pour effectuer un filtrage passe-haut du signal provenant du premier chemin pour former le second signal de courant alternatif CCP, et transmettre le second signal de courant alternatif CCP à l'antenne CCP, ou effectuer un filtrage passe-haut du premier signal de courant alternatif CCP reçu par l'antenne CCP, puis transmettre le premier signal de courant alternatif CCP filtré à un module CCP par le premier chemin. L'invention concerne également un terminal de communication et un système de communication. En utilisant la présente invention, le multiplexage de voie de transmission de signaux de courant alternatif CCP et de signaux de courant continu peut être mis en œuvre.
PCT/CN2014/074034 2014-03-25 2014-03-25 Batterie, terminal de communication, et système de communication WO2015143625A1 (fr)

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CN201480005014.0A CN105611982B (zh) 2014-03-25 2014-03-25 一种电池、通信终端及通信系统
PCT/CN2014/074034 WO2015143625A1 (fr) 2014-03-25 2014-03-25 Batterie, terminal de communication, et système de communication

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WO2013170683A1 (fr) * 2012-05-14 2013-11-21 中兴通讯股份有限公司 Module d'antenne et dispositif de terminal mobile
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