Long-distance adaptive FSK modulation self-learning control method based on relay coil and wireless charger

Abstract

The present invention provides a long-distance adaptive FSK modulation self-learning control method based on a relay coil and a wireless charger. The operating parameters of the wireless charging transmitting coil are configured by sequentially calling the parameters in a mapping data group where the weight values ​​of the FSK communication modulation depth parameters are located in order from large to small. The communication modulation depth parameters between the wireless charging receiving end and the wireless charger transmitting end can be matched more quickly. When a feedback signal sent by the wireless charging receiving end based on the communication information can be received by using a certain communication modulation depth parameter, the weight value corresponding to the communication modulation depth parameter will be increased. When the same wireless charging receiving end uses the wireless charger for charging again, the communication modulation depth parameter can be retrieved and used earlier. Then, the purpose of rapid response is achieved through self-learning, so that in the case of long-distance wireless charging across a table, a rapid response can also be achieved between the charging device and the receiving device.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and in particular to a wireless charging self-learning control method and a wireless charger for long-distance adaptive FSK communication modulation. Background Art

[0002] Wireless charging is becoming more and more popular among home furnishing consumers because it can realize the wireless connection between the charging power supply device and the power receiving device, which can solve the problem of multiple and messy power cords on the desktop. However, the wireless charging systems currently on the market are all based on Qi wireless charging systems. The charging distance of Qi wireless charging systems is only 5mm-8mm, while the thickness of most of our desktop panels is generally between 15mm-30mm. Therefore, the existing wireless charging products need to drill holes under the desktop panel to embed the wireless charger into the table to solve the problem. However, drilling holes not only destroys the structure of the table and affects the appearance, but also consumes manpower and time. At the same time, the need to drill holes on the desktop to install wireless chargers will greatly affect the promotion and application of wireless chargers in office and home. In addition, if you want to achieve fast charging for mobile phones, the transmitter and the receiver need to complete authentication or binding. For example, the current EPP architecture requires the transmitter to send a signal to the mobile phone through FSK modulation, complete the identification of both parties, and formulate a charging protocol to achieve fast charging (high power). The FSK modulation depths corresponding to different desktop thicknesses are different, and the modulation depths corresponding to different placement positions at the same depth are also different. Each user has a habitual charging habit (placement) and fixed 1-2 wireless charging mobile phones. The wireless charging receiving coil of each mobile phone is slightly different, and the FSK modulation depth is also different. Traditional wireless chargers cannot respond to these differences quickly, resulting in most mobile phones actually charging at low power for most of the charging time. Summary of the invention

[0003] Based on the above, a wireless charging self-learning control method and a wireless charger are provided, which can adapt to a larger charging distance, adapt to a variety of desktop thickness ranges, and can quickly specify a charging protocol with a receiving end during wireless charging.

[0004] A control method for a long-distance adaptive wireless charging system, the method comprising: setting the input voltage of the wireless charging transmitting coil to a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to a first duty cycle, and continuously collecting n characteristic values ​​q of the wireless charging transmitting coil according to a set period in a first time period from S0 to S1. n , and refer to formula (1) to obtain the first eigenvalue Q1:

[0005] Q1 = [(q1 + q2 + q3 +... + q n ) - (q min + q max )] / (n - 2) (1)

[0006] Wherein, the q min is the minimum value among the eigenvalues q n of the n wireless charging transmitting coils; the q max is the maximum value among the eigenvalues q n of the n wireless charging transmitting coils; the n is a positive integer greater than or equal to 3; determine whether the first eigenvalue Q1 is less than or equal to the first set value. If so, it is determined that there is a relay coil in the wireless charging system, and the second eigenvalue Q2 of the wireless charging transmitting coil is obtained at time S2; the time S2 is any time within the first time period from S0 to S1; set the transmitting frequency of the wireless charging transmitting coil to the second transmitting frequency, and obtain the average eigenvalue q x0 to S x1 of the wireless charging transmitting coil within the second time period; S x to S x0 to S x1 of the second time period is any time period within the first time period from S0 to S1; the second transmitting frequency is greater than the first transmitting frequency; obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (2):

[0007] D1 = b × e ax (2)

[0008] Wherein, a and b are constants, and the value of x is the value of the average eigenvalue q x ; calculate the first FSK communication modulation depth parameter T1 according to the distance D1 between the wireless charging transmitting coil and the relay coil, and set the weight value of the first FSK communication modulation depth parameter to F T1 ; modulate the information sent from the wireless charging transmitting end to the wireless charging receiving end with the first FSK communication modulation depth parameter, and determine whether the wireless charging transmitting end has received the feedback information from the wireless charging receiving end. If not, calculate the second FSK communication modulation depth parameter T2 with reference to formula (3):

[0009] Tw = T(w - 1) + △T × h (3)

[0010] Wherein, Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T(w-1) is the basic FSK communication modulation depth parameter of Tw, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, and w is a positive integer; the information sent by the wireless charging transmitter to the wireless charging receiving end is modulated with the second FSK communication modulation depth parameter, and it is determined again whether the wireless charging transmitter has received the feedback information of the wireless charging receiving end. If so, the weight value F of T2 is obtained by referring to formula (IV). T2 :

[0011]

[0012] Among them, k T is the magnification, L T is a constant, F Tr and F T(r-1) is the weight value and F T(r-1) F Tr The basic weight value, that is, F Tr The weight value before the change, r is a positive integer; D1, T1, F T1 , Q2 are recorded and set as the fifth mapping data group; D1, T2, F T2 , Q2 is recorded and set as the sixth mapping data group;

[0013] In one embodiment, the default F T0 The value of is 0.

[0014] In one embodiment, the method further includes: setting h to a positive number and adjusting it in a gradually increasing direction, and determining whether h is greater than or equal to a second set value; if so, setting h to a negative number and adjusting it in a gradually decreasing direction.

[0015] In one embodiment, the method further comprises: T1 and the F T2 The order in which the first mapping data group and the second mapping data group are called is set according to the size order.

[0016] In one embodiment, the method further comprises: determining the F T2 Is it greater than the F T1 If so, when calling the mapping data, the second mapping data group is called before the first mapping data group; otherwise, the first mapping data group is called before the second mapping data group.

[0017] In one embodiment, the method further comprises: when determining that the F T2 Greater than the F T1 When the FT2 Is it greater than a third set value? If so, the second mapping data group is set as the default mapping data group for the wireless charging system information modulation when the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0018] In one embodiment, the method further comprises: setting the k T The value of is used to adjust the speed of changing the sequence of each mapping data group when multiple mapping data groups are called.

[0019] In one of the embodiments, a first PING power or a first PING voltage is calculated according to the distance D1 between the wireless charging transmitting coil and the relay coil; the transmitting power of the wireless charging transmitting coil is set to the first PING power, or the input voltage of the wireless charging transmitting coil is set to the first PING voltage, and it is determined whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, and if so, the transmitting power of the wireless charging transmitting coil is adjusted according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end; the distance D1, the first PING power and / or the first PING voltage, and the second eigenvalue Q2 are recorded and set as a third mapping data group, or the first PING power and / or the first PING voltage are recorded and set to the first mapping data group.

[0020] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method also includes: determining whether the first eigenvalue Q1 is greater than or equal to a fourth set value, and if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining a third eigenvalue Q3 of the wireless charging transmitting coil at time S3; recording and setting the third eigenvalue Q3 as a fourth mapping data group; the S3 time is any time within the first time period other than S0 to S1; the first set value is greater than the fourth set value.

[0021] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method also includes: determining whether the first eigenvalue Q1 is greater than or equal to a fourth set value, and if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining a third eigenvalue Q3 of the wireless charging transmitting coil at time S3; recording and setting the third eigenvalue Q3 to the first mapping data group; the S3 time is any time within the first time period other than S0 to S1; the first set value is greater than the fourth set value.

[0022] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method also includes: determining whether the first eigenvalue Q1 is greater than or equal to a fourth set value, and if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining a third eigenvalue Q3 of the wireless charging transmitting coil at time S3; recording and setting the third eigenvalue Q3 as a fourth mapping data group, and recording and setting the third eigenvalue Q3 to the first mapping data group; the S3 time is any time within the first time period other than S0 to S1; the first set value is greater than the fourth set value.

[0023] In one embodiment, the method further includes: setting the transmission power of the wireless charging transmitting coil to the first PING power, or setting the input voltage of the wireless charging transmitting coil to the first PING voltage, and determining whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, if not, adjusting the transmission power of the wireless charging transmitting coil to P1 according to formula (V), or adjusting the input voltage of the wireless charging transmitting coil to V1 according to formula (VI):

[0024] P i =P ping +△P×m (V)

[0025] V i =V ping +△V×m; (vi)

[0026] Among them, P i is the actual power value of the wireless charging transmitting coil, V i is the actual input voltage value of the wireless charging transmitting coil, P ping For the first PING power, V ping is the first PING voltage, △P is the minimum adjustment change unit of the wireless charging transmitting coil transmission power, △V is the minimum adjustment change unit of the wireless charging transmitting coil input voltage, m is an integer, i is a positive integer, and it is determined again whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If so, the weight value of P1 is increased accordingly to F P1 , or increase the weight of V1 to F V1， According to the requirements of the wireless charging receiving end, the transmitting power of the wireless charging transmitting coil is adjusted to charge the wireless charging receiving end; the P1 and the F P1 Record and set to the fifth mapping data group, or, set the V1 and the F V1 Record and set to the fifth mapping data group.

[0027] In one embodiment, refer to formula (VII) to obtain the weight value F of P1 P1 , refer to formula (8) to obtain the weight value F of V1 V1 :

[0028]

[0029] Among them, k p and k v is the magnification, L p and L v is a constant, F Pj 、F P(j-1) 、F Vj and F V(j-1) is the weight value and F P(j-1) F Pj The basic weight value, F V(j-1) F Vj The basic weight value of j is a positive integer. In this embodiment, F P(j-1) F Pj The weight value before the change, F V(j-1) F Vj The weight value before the change.

[0030] In one embodiment, the default F P0 The value is 0, the default F V0 The value of is 0.

[0031] In one embodiment, the method further includes: setting m to a positive number and adjusting it in a gradually increasing direction, and determining whether m is greater than or equal to a second set value; if so, setting m to a negative number and adjusting it in a gradually decreasing direction.

[0032] In one embodiment, the method further includes: when the distance D1 between the wireless charging transmitting coil and the relay coil is constant, changing the relative position of the wireless charging receiving coil and the wireless charging transmitting coil, obtaining the transmission power adjustment P2 of the wireless charging transmitting coil by referring to formula (V), and obtaining the weight value F of P2 by referring to formula (VII). P2 Alternatively, refer to formula (six) to obtain the input voltage adjustment V2 of the wireless charging transmitting coil, and refer to formula (eight) to obtain the weight value F of V2 V2 ; P2, F P2 Record and set to the sixth mapping data group, or, change the V2, F V2 Record and set to the sixth mapping data group; determine the F P2 Is it greater than the F P1If so, when calling the mapping data, the sixth mapping data group is called before the fifth mapping data group; otherwise, the fifth mapping data group is called before the sixth mapping data group.

[0033] In one embodiment, the method further comprises: determining the F P1 Is it greater than the third set value? If so, the fifth mapping data group is set as the default mapping data group of the wireless charging system when the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0034] In one embodiment, the method further comprises: setting the k p or k v The value of is used to adjust the speed of changing the priority order when the fifth mapping data group and the sixth mapping data group are called.

[0035] In one of the embodiments, the method further includes: calculating a first ASM communication demodulation width parameter according to a distance D1 between the wireless charging transmitting coil and the relay coil; and recording and setting the first ASM communication demodulation width parameter into the first mapping data group.

[0036] In one of the embodiments, the method further includes: calculating a first FSK communication modulation depth parameter according to a distance D1 between the wireless charging transmitting coil and the relay coil; and recording and setting the first FSK communication modulation depth parameter into the first mapping data group.

[0037] In one of the embodiments, the method further includes: calculating a first ASM communication demodulation width parameter and a first FSK communication modulation depth parameter based on a distance D1 between the wireless charging transmitting coil and the relay coil; and recording and setting the first ASM communication demodulation width parameter and the first FSK communication modulation depth parameter into the first mapping data group.

[0038] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter G1 according to a distance D1 between the wireless charging transmitting coil and the relay coil, and setting a weight value of the first ASM communication demodulation width parameter G1 to F G1 ; Use the first ASM communication demodulation width parameter G1 to demodulate the information received by the wireless charging transmitter, and determine whether the wireless charging transmitter has obtained the charging demand parameter information fed back by the wireless charging receiver. If not, refer to formula (IX) to calculate the second ASM communication demodulation width parameter G2:

[0039] G s =G(s-1) +△G×u (IX)

[0040] Among them, G s is the actual ASM communication demodulation width parameter of the wireless charging transmitter, G (s-1) G s The basic ASM communication demodulation width parameter, △G is the minimum adjustment change unit of the ASM communication demodulation width parameter, u is an integer, and s is a positive integer; the second ASM communication demodulation width parameter G2 is used to demodulate the information received by the wireless charging transmitter, and it is determined again whether the wireless charging transmitter obtains the charging demand parameter information fed back by the wireless charging receiver. If so, refer to formula (10) to obtain the weight value F of G2 G2 :

[0041]

[0042] Among them, k G is the magnification, L G is a constant, F Gy and F G(y-1) is the weight value and F G(y-1) F Gy The basic weight value, that is, F Gy The value before the change, y is a positive integer; D1, G1, F G1 , Q2 are recorded and set as the seventh mapping data group; D1, G2, F G2 , Q2 is recorded and set as the eighth mapping data group.

[0043] In one embodiment, the default F G0 The value of is 0.

[0044] In one embodiment, the method further includes: setting u to a positive number and adjusting it in a gradually increasing direction, and determining whether u is greater than or equal to a second set value; if so, setting u to a negative number and adjusting it in a gradually decreasing direction.

[0045] In one embodiment, the method further comprises: G1 and the F G2 The order in which the seventh mapping data group and the eighth mapping data group are called is set according to the order of size.

[0046] In one embodiment, the method further comprises: determining the F G2 Is it greater than the F G1 If so, when calling mapping data, the eighth mapping data group is called before the seventh mapping data group; otherwise, the seventh mapping data group is called before the eighth mapping data group.

[0047] In one embodiment, the method further comprises: when determining that the F G2 Greater than the F G1 When the F G2 Is it greater than the fourth set value? If so, the eighth mapping data group is set as the default mapping data group for demodulating the wireless charging system information when the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0048] In one embodiment, the method further comprises: setting the k G The value of is used to adjust the speed of changing the sequence of each mapping data group when it is called when multiple mapping data groups are used for information demodulation.

[0049] In one of the embodiments, each mapping data group is updated into FLASH via I2C.

[0050] In one of the embodiments, the changed weight value is updated to FLASH via I2C.

[0051] In one embodiment, a fourth characteristic value Q4 of the wireless charging transmitting coil is obtained at time S4, and it is determined whether the fourth characteristic value Q4 is less than or equal to the second characteristic value Q2. If so, it is determined whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, the transmitting power of the wireless charging transmitting coil is adjusted according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end.

[0052] The S4 moment is not in the first time period from S0 to S1 and is located at a time point on a set cycle, that is, the fourth characteristic value Q4 of the wireless charging transmitting coil is periodically obtained.

[0053] In one of the embodiments, before determining whether the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, the method further includes: determining whether the fourth characteristic value Q4 is less than or equal to the third characteristic value Q3, and if so, the alarm indicator light in the control system turns on or the buzzer sounds.

[0054] In one embodiment, the first input voltage is between 4.5V and 5.5V.

[0055] In one embodiment, the first transmitting frequency is between 0.1 Hz and 1 Hz.

[0056] In one of the embodiments, the second transmitting frequency is between 100 kHz and 150 kHz.

[0057] In one embodiment, the first duty cycle is between 10% and 50%.

[0058] In one of the embodiments, the first duty cycle is 20%.

[0059] In one embodiment, the first setting value is between 2.6 and 3.5.

[0060] In one embodiment, the first setting value is 3.

[0061] In one embodiment, the fourth setting value is between 1.8 and 2.5.

[0062] In one embodiment, the fourth setting value is 2.

[0063] In one embodiment, the value of the second setting value is between 7 and 15.

[0064] In one embodiment, the value of the second setting value is between 5 and 12.

[0065] In one embodiment, the value of the second setting value is 11.

[0066] In one embodiment, the value of the second setting value is 9.

[0067] In one embodiment, the third setting value is between 3 and 10.

[0068] In one embodiment, the third setting value is between 4 and 8.

[0069] In one embodiment, the value of the third setting value is 5.

[0070] In one embodiment, the value of the third setting value is 7.

[0071] In one embodiment, the value of m is between -11 and 11.

[0072] In one embodiment, the value of m is between -8 and 8.

[0073] In one embodiment, the value of m is between -5 and 5.

[0074] In one embodiment, the value of h is between -11 and 11.

[0075] In one embodiment, the value of h is between -8 and 8.

[0076] In one embodiment, the value of h is between -5 and 5.

[0077] In one embodiment, the value of h is between -7 and 7.

[0078] In one embodiment, the value of u is between -11 and 11.

[0079] In one embodiment, the value of u is between -8 and 8.

[0080] In one embodiment, the value of u is between -5 and 5.

[0081] In one embodiment, the value of u is between -7 and 7.

[0082] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil voltage.

[0083] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil power.

[0084] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil current.

[0085] In one embodiment, the first characteristic value Q1 is the oscillation attenuation coefficient of the entire system. The attenuation coefficient can be used to detect whether the relay coil exists and whether there is a metal foreign body on the relay coil.

[0086] The control method of a long-distance adaptive wireless charging system provided above allows the wireless charging transmitting coil to perform a short period of very weak charged operation under the environment of the first input voltage, the first transmission rate and the first duty cycle in the initial stage, and obtains the first characteristic value Q1 of the transmitting coil by periodically collecting the characteristic value of the transmitting coil and according to a specific logical relationship. According to the first characteristic value Q1, it can be determined whether there is a relay coil in the system. If there is a relay coil, an innovative fitting formula is used to calculate the distance D1 between the transmitting coil and the relay coil in combination with the second set of operation logic. After knowing the distance, the first FSK communication modulation depth parameter T1 is calculated by the third set of operation logic, and the weight value of the first FSK communication modulation depth parameter is set to F T1 ; When the first FSK communication modulation depth parameter modulation signal is used and no feedback information is received from the wireless charging receiving end, the FSK communication modulation depth parameter is tried to be adjusted to T2. If the feedback information of the wireless charging receiving end is received under the T2 parameter, it is more appropriate to record the environment T2 parameter at this time. In order to first call the T2 parameter when wireless charging is performed again to achieve the purpose of fast communication, the weight value of the T2 parameter is set to F T2 , D1, T1, F T1, Q2 are recorded and set as the first mapping data group; D1, T2, F T2 , Q2 is recorded and set as the second mapping data group. This setting makes it easy to call the FSK communication modulation depth parameters with large weight values ​​according to the order of weight values ​​when wireless charging is performed again (the larger the weight value, the greater the probability that the parameter meets the communication in the current environment), so as to speed up the handshake speed between the transmitter and the receiver, adapt to the EPP architecture, and make the wireless charging system run fast charging more often during wireless charging, thereby increasing the charging speed, saving charging time, and improving the user experience.

[0087] According to the above method, the present application also provides a control method for applying the learning results of the above method.

[0088] A wireless charging self-learning control method for long-distance adaptive FSK communication modulation, the method comprising: determining whether a wireless charging transmitting end receives a charging request signal sent by a wireless charging receiving end, and if so, determining whether a wireless charging transmitting end receives a charging request signal sent by a wireless charging receiving end according to a weight value F Tr The mapping data group where the weight value is located is called in order from large to small to modulate the communication information of the wireless charging transmitting end, and it is determined whether the wireless charging transmitting end receives the feedback signal sent by the wireless charging receiving end based on the communication information. If so, the information sent by the wireless charging transmitting end to the wireless charging receiving end is modulated using the FSK communication modulation depth parameter that can currently receive the feedback information; the F Tr is the weight value F in any of the above embodiments Tr ; The FSK communication modulation depth parameter is the FSK communication modulation depth parameter described in any one of the above embodiments; the mapping data group is the mapping data group described in any one of the above embodiments.

[0089] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, increasing the weight value F in the mapping data group called at this time Tr .

[0090] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, increasing the weight value F according to formula (IV) Tr .

[0091] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, determining the weight value F in the mapping data group called at this time Tr Is it the maximum weight value F? Tmax If not, then increase the weight value F in the mapping data group called at this time Tr, at the same time, reduce the maximum weight value F Tmax .

[0092] In one embodiment, the method further includes: referring to formula (IV) to increase the weight value F Tr , and at the same time the maximum weight value F Tmax Modify and set to

[0093] Among them, k T is the magnification, L T is a constant, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, and h is an integer.

[0094] In one of the embodiments, the method further includes: when the mapping data groups are all called, if the wireless charging transmitting end still does not receive a feedback signal from the wireless charging receiving end, reducing or shutting down the transmission power of the wireless charging transmitting coil.

[0095] In one embodiment, before determining whether the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end, the method includes: setting the input voltage of the wireless charging transmitting coil to the first input voltage, the transmitting frequency to the first transmitting frequency, and the duty cycle of the first transmitting frequency to the first duty cycle, obtaining the fifth characteristic value Q5 of the wireless charging transmitting coil at time S5, and determining whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, and if so, continuing to determine whether the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end;

[0096] The S5 moment is any moment when the wireless charging transmitting coil starts working;

[0097] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments;

[0098] The first input voltage is the first input voltage in any one of the above embodiments;

[0099] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments;

[0100] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0101] The above-mentioned wireless charging self-learning control method of long-distance adaptive FSK communication modulation is provided. When the wireless charging transmitter receives the charging request signal sent by the wireless charging receiver, according to the weight value F TrThe mapping data group where the weight value is located is called in order from large to small to modulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter receives the feedback signal sent by the wireless charging receiver based on the communication information. If so, the FSK communication modulation depth parameter that can currently receive feedback information is used to modulate the information sent by the wireless charging transmitter to the wireless charging receiver. Since whether the receiving end can perform fast charging (generally 15 watts) or wireless charging of the EPP architecture with the transmitting end also depends on whether the receiving end can complete the charging protocol (complete authentication or binding) with the transmitting end within the specified time, it is set in this way. According to the above content, it can be seen that the weight value F Tr The larger the value is, the closer the operating parameters in the mapping data group are to the operating parameters of the wireless charging system composed of the user's commonly used receiving end, transmitting end and relay. As a result, when the user's commonly used receiving end needs to be charged wirelessly, it can respond quickly in communication to prevent the handshake from failing and only low-power (usually 5 watts) charging can be performed, thereby improving the response speed and enhancing the user experience.

[0102] According to the above method, the present application also provides another control method using the learning results of the above method.

[0103] A control method for a long-distance adaptive wireless charging system, the method comprising: setting an input voltage of a wireless charging transmitting coil to a first input voltage, a transmitting frequency to a first transmitting frequency, a duty cycle of the first transmitting frequency to a first duty cycle, obtaining a fifth characteristic value Q5 of the wireless charging transmitting coil at time S5, and judging whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, if so, judging whether a wireless charging transmitting end receives a charging request signal sent by a wireless charging receiving end, if so, adjusting the transmitting power of the wireless charging transmitting coil to charge the wireless charging receiving end according to the requirement of the wireless charging receiving end; the S5 time is any time when the wireless charging transmitting coil starts to work; the second characteristic value Q2 is the second characteristic value Q2 in any one of the above embodiments; the first input voltage is the first input voltage in any one of the above embodiments; the first transmitting frequency is the first transmitting frequency in any one of the above embodiments; the first duty cycle is the first duty cycle in any one of the above embodiments.

[0104] In one of the embodiments, before determining whether the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end, the method further includes: setting the transmitting power of the wireless charging transmitting coil to a first PING power, or setting the input voltage of the wireless charging transmitting coil to a first PING voltage; the first PING power is the first PING power in any one of the above embodiments; the first PING voltage is the first PING voltage in any one of the above embodiments.

[0105] In one of the embodiments, before determining whether the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, the method further includes: determining whether the fifth characteristic value Q5 is less than or equal to the third characteristic value Q3, and if so, the alarm indicator light in the control system turns on or the buzzer sounds; the third characteristic value Q3 is the third characteristic value Q3 in any one of the above embodiments.

[0106] In one of the embodiments, before determining whether the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, the method further includes: determining whether the fifth characteristic value Q5 is less than or equal to a fourth set value, and if so, the alarm indicator light in the control system turns on or the buzzer sounds; the fourth set value is the fourth set value in any one of the above embodiments.

[0107] The control method of a long-distance adaptive wireless charging system provided above obtains the characteristic value (fifth characteristic value Q5) of the transmitting coil at a certain moment and compares it with the characteristic value (second characteristic value Q2) of the transmitting coil in the case where there is a relay coil and a wireless charging receiving end on the relay coil, so as to quickly pre-judge whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil, and then accurately judge whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil by judging whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. Such a setting enables the wireless charging system applying the control method to respond quickly when wireless charging is performed again, and enter the wireless charging program to output energy more quickly, thereby improving the user experience.

[0108] According to the above method, the present application also provides another control method using the learning results of the above method.

[0109] A self-learning control method for a long-distance adaptive wireless charging system, the method comprising: setting an input voltage of a wireless charging transmitting coil to a first input voltage, a transmitting frequency to a first transmitting frequency, a duty cycle of the first transmitting frequency to a first duty cycle, obtaining a fifth eigenvalue Q5 of the wireless charging transmitting coil at time S5, and determining whether the fifth eigenvalue Q5 is less than or equal to the second eigenvalue Q2, and if so, determining the fifth eigenvalue Q5 according to a weight value F Pj or F Vj The mapping data group where the weight value is located is called in order from large to small to configure the operating parameters of the wireless charging transmitting coil, and it is determined whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If so, the transmission power of the wireless charging transmitting coil is adjusted according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end;

[0110] The S5 moment is any moment when the wireless charging transmitting coil starts working;

[0111] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments;

[0112] The F Pj is the weight value F in any of the above embodiments Pj ;

[0113] The F Vj is the weight value F in any of the above embodiments Vj ;

[0114] The first input voltage is the first input voltage in any one of the above embodiments;

[0115] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments;

[0116] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0117] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end, increasing the weight value F in the mapping data group called at this time Pj or F Vj .

[0118] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end, increasing the weight value F in the mapping data group called at this time Pj or F Vj , while reducing the weight value in the previous mapping data group in the calling order.

[0119] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end, increasing the weight value F according to formula (VII) Pj , refer to formula (eight) to increase the weight value F Vj .

[0120] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end, determining the weight value F in the mapping data group called at this time Pj or F Vj Is it the maximum weight value F? Pmax or F Vmax If not, then increase the weight value F in the mapping data group called at this time Pj or F Vj , at the same time, reduce the maximum weight value F Pmax Or the maximum weight value F Vmax .

[0121] In one embodiment, the method further includes: referring to formula (5), increasing the weight value F Pj , refer to formula (six) to increase the weight value F Vj , and at the same time the maximum weight value F Pmax Modify and set to The maximum weight value F Vmax Modify and set to

[0122] Among them, k P and k v is the magnification, L P and L v is a constant, ΔP is the minimum adjustment change unit of the wireless charging transmitting coil transmission power, ΔV is the minimum adjustment change unit of the wireless charging transmitting coil input voltage, and m is an integer.

[0123] In one of the embodiments, the method further includes: when the mapping data groups are all called, the wireless charging transmitting end still does not receive the charging request signal sent by the wireless charging receiving end, then the transmitting power of the wireless charging transmitting coil is set to a first PING power, or the input voltage of the wireless charging transmitting coil is set to a first PING voltage; the first PING power is the first PING power in any one of the above embodiments; the first PING voltage is the first PING voltage in any one of the above embodiments.

[0124] In one embodiment, when all the mapping data groups are called, the wireless charging transmitting end still does not receive the charging request signal sent by the wireless charging receiving end, then the transmission power of the wireless charging transmitting coil is set to the first PING power, or the input voltage of the wireless charging transmitting coil is set to the first PING voltage, and it is determined whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If not, the transmission power of the wireless charging transmitting coil is adjusted to P3 with reference to formula (5), or the input voltage of the wireless charging transmitting coil is adjusted to V3 with reference to formula (6), and it is determined again whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If so, the weight value F of P3 is obtained with reference to formula (7). P3 , or refer to formula (8) to obtain the weight value F of V3 V3 , and adjust the transmission power of the wireless charging transmitting coil to charge the wireless charging receiving end according to the requirements of the wireless charging receiving end; P3 Record and set to the ninth mapping data group, or, set the V3 and the F V3 Recorded and set to the ninth mapping data group; the first PING power is the first PING power in any one of the above embodiments; the first PING voltage is the first PING voltage in any one of the above embodiments.

[0125] The self-learning control method of a long-distance adaptive wireless charging system provided above obtains the characteristic value (fifth characteristic value Q5) of the transmitting coil at a certain moment and compares it with the characteristic value (second characteristic value Q2) of the transmitting coil in the case where there is a relay coil and a wireless charging receiving end on the relay coil, so as to quickly predict whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil, and then predicts whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil according to the weight value F. Pj or F Vj The mapping data group where the weight value is located is called in order from large to small to directly configure the operating parameters of the wireless charging transmitting coil, so as to quickly adapt to the matching requirements of commonly used receiving terminals. For the receiving terminals commonly used by users, this method can allow the commonly used receiving terminals to be powered more quickly and send charging request signals to the transmitting terminals, thereby improving the response speed of the wireless charging system to the commonly used receiving terminals, that is, the wireless charging system applying the control method can respond quickly when wireless charging is performed again, enter the wireless charging program more quickly to output energy, and improve the user experience.

[0126] According to the above method, the present application also provides another control method using the learning results of the above method.

[0127] A wireless charging self-learning control method for long-distance adaptive ASM communication demodulation, the method comprising: determining whether a wireless charging transmitting end has received a signal for feeding back charging demand parameters sent by a wireless charging receiving end, and if so, determining whether a signal for feeding back charging demand parameters is received by a wireless charging transmitting end according to a weight value F Gy The mapping data group where the weight value is located is called in order from large to small to demodulate the communication information of the wireless charging transmitting end, and determine whether the wireless charging transmitting end has obtained the charging requirement parameter information fed back by the wireless charging receiving end. If so, the ASM communication demodulation width parameter that can currently obtain the charging requirement parameter information of the wireless charging receiving end is used to demodulate the information received by the wireless charging transmitting end; the F Gy is the weight value F in any of the above embodiments Gy ; The ASM communication demodulation width parameter is the ASM communication demodulation width parameter in any one of the above embodiments; the mapping data group is the mapping data group in any one of the above embodiments.

[0128] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter obtains the charging requirement parameter information fed back by the wireless charging receiver, increasing the weight value F in the mapping data group called at this time Gy .

[0129] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter obtains the charging requirement parameter information fed back by the wireless charging receiver, increase the weight value F according to formula (10) Gy .

[0130] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter obtains the charging requirement parameter information fed back by the wireless charging receiver, determining the weight value F in the mapping data group called at this time Gy Is it the maximum weight value F? Gmax If not, then increase the weight value F in the mapping data group called at this time Gy , at the same time, reduce the maximum weight value F Gmax .

[0131] In one embodiment, the method further includes: referring to formula (10) to increase the weight value F Gy , and at the same time the maximum weight value F Gmax Modify and set to

[0132] Among them, k G is the magnification, L G is a constant, △G is the minimum adjustment change unit of the ASM communication demodulation width parameter, and u is an integer.

[0133] In one of the embodiments, the method further includes: when all the mapping data groups are called, if the wireless charging transmitting end still does not obtain the charging requirement parameter information fed back by the wireless charging receiving end, then turning off the transmission power of the wireless charging transmitting coil.

[0134] In one of the embodiments, before determining whether the wireless charging transmitter has received a signal for feeding back a charging requirement parameter sent by the wireless charging receiver, the method includes: setting the input voltage of the wireless charging transmitter coil to a first input voltage, the transmission frequency to a first transmission frequency, and the duty cycle of the first transmission frequency to a first duty cycle, obtaining a fifth characteristic value Q5 of the wireless charging transmitter coil at time S5, and determining whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, and if so, continuing to determine whether the wireless charging transmitter has received a signal for feeding back a charging requirement parameter sent by the wireless charging receiver; the S5 moment is any moment when the wireless charging transmitter coil starts working; the second characteristic value Q2 is the second characteristic value Q2 in any of the above embodiments; the first input voltage is the first input voltage in any of the above embodiments; the first transmission frequency is the first transmission frequency in any of the above embodiments; the first duty cycle is the first duty cycle in any of the above embodiments.

[0135] In one of the embodiments, each changed mapping data group is updated into FLASH via I2C.

[0136] In one of the embodiments, each changed weight value is updated to FLASH via I2C.

[0137] The above-mentioned wireless charging self-learning control method of long-distance adaptive ASM communication demodulation is

[0138] When the wireless charging transmitter receives the signal sent by the wireless charging receiver for feeding back the charging demand parameter, according to the weight value F Gy The mapping data group where the weight value is located is called in order from large to small to demodulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter has obtained the charging requirement parameter information fed back by the wireless charging receiver. If so, the ASM communication demodulation width parameter that can currently obtain the charging requirement parameter information of the wireless charging receiver is used to demodulate the information received by the wireless charging transmitter. Since whether the receiving end can perform fast charging (generally 15 watts) or wireless charging of the EPP architecture with the transmitting end also depends on whether the receiving end can complete the charging protocol (complete authentication or binding) with the transmitting end within the specified time, it is set in this way. According to the above content, it can be seen that the weight value FGy The larger the value is, the closer the operating parameters in the mapping data group are to the operating parameters of the wireless charging system composed of the user's commonly used receiving end, transmitting end and relay. As a result, when the user's commonly used receiving end needs to be charged wirelessly, it can respond quickly in communication to prevent the handshake from failing and only low-power (usually 5 watts) charging can be performed, thereby improving the response speed and enhancing the user experience.

[0139] According to the above method, the present application also provides another control method using the learning results of the above method.

[0140] A long-distance adaptive FSK modulation self-learning control method based on a relay coil, wherein the wireless charging system stores a plurality of mapping data groups that can be read and called by a computer processor; the data in the mapping data groups include: (w-1) 、F T(r-1) ; The T (w-1) is the FSK communication modulation depth parameter of the wireless charging transmitter; the F T(r-1) For the T (w-1) The weight value of; wherein w is a positive integer; r is a positive integer; the method comprises: setting the input voltage of the wireless charging transmitting coil to the first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to the first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to the first duty cycle, determining whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, and if so, determining the weight value F according to the weight value F. T(r-1) The values ​​of the weight values ​​are called in descending order in the FSK communication modulation depth parameter T in the mapping data group where the weight value is located. (w-1) To modulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter receives the feedback signal sent by the wireless charging receiver based on the communication information. If so, refer to formula (IV) to increase the weight value F T(r-1) , and adopts the FSK communication modulation depth parameter T that can currently receive feedback information (w-1) Modulate the information sent by the wireless charging transmitter to the wireless charging receiver;

[0141]

[0142] Among them, k T is the magnification, L T is a constant, F Tr and F T(r-1) is the weight value and F T(r-1) F Tr The basic weight value, that is, F Tr The weight value before the change, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, r is a positive integer, and h is an integer.

[0143] In one embodiment, the method further includes: when all the mapping data groups have been called and the wireless charging transmitter still has not received a feedback signal from the wireless charging receiver, select the FSK communication modulation depth parameter T in any one of the mapping data groups (w-1) Calculate the FSK communication modulation depth parameter Tw with reference to formula (III):

[0144] Tw = T(w - 1)+△T×h (III)

[0145] where Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T(w - 1) is the base FSK communication modulation depth parameter of Tw, and △T is the minimum adjustment change unit of the FSK communication modulation depth parameter; modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the FSK communication modulation depth parameter Tw, and determine again whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If so, use the FSK communication modulation depth parameter T at which the feedback information can be received currently w Modulate the information sent from the wireless charging transmitter to the wireless charging receiver

[0146] In one embodiment, the method further includes: when it is determined that modulating the information sent from the wireless charging transmitter to the wireless charging receiver with the FSK communication modulation depth parameter Tw can enable the wireless charging transmitter to receive the feedback information from the wireless charging receiver, obtain the weight value F of Tw with reference to formula (IV) Tr ; record the Tw and F Tr and set them as a new set of mapping data groups for retrieval when used next time

[0147] In one embodiment, the method further includes: when all the mapping data groups have been called and the wireless charging transmitter still has not received a feedback signal from the wireless charging receiver, set the transmission frequency of the wireless charging transmitting coil to the second transmission frequency, and obtain the average eigenvalue q of the wireless charging transmitting coil within the second time period from S x0 to S x1 ; the second time period from S x to S x0 to S x1 is any time period within the first time period other than from S0 to S1; the second transmission frequency is greater than the first transmission frequency; obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (II):

[0148] D1 = b×e ax (II)

[0149] where a and b are constants, and the value of x is the average eigenvalue q x According to the distance D1 between the wireless charging transmitting coil and the relay coil, calculate the first FSK communication modulation depth parameter T1, and set the weight value of the first FSK communication modulation depth parameter to F T1 ; Modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the first FSK communication modulation depth parameter, and determine whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If not, set the value of w to 2, and calculate the second FSK communication modulation depth parameter T2 with reference to formula (III):

[0150] Tw = T(w - 1) + △T × h (III)

[0151] where Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T(w - 1) is the basic FSK communication modulation depth parameter of Tw, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, and w is a positive integer; Modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the second FSK communication modulation depth parameter T2, and determine again whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If so, set the value of r to 2, and then obtain the weight value F of T2 with reference to formula (IV) T2 and modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the FSK communication modulation depth parameter T2; Record and set the D1, T1, F T1 as the first mapping data group; Record and set the D1, T2, F T2 as the second mapping data group.

[0152] In one embodiment, the method further includes: setting h as a positive number and adjusting it in the gradually increasing direction, and determining whether h is greater than or equal to the second set value. If so, set h as a negative number and adjust it in the gradually decreasing direction.

[0153] In one embodiment, the method further includes: adjusting the value of k T to adjust the replacement speed of the order of calling each mapping data group when adjusting multiple mapping data groups.

[0154] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has received the feedback signal from the wireless charging receiver, determining whether the weight value F Tr in the called mapping data group at this time is the maximum weight value F TmaxIf not, then increase the weight value F in the mapping data group called at this time Tr , at the same time, reduce the maximum weight value F Tmax .

[0155] In one embodiment, the maximum weight value F is reduced Tmax The methods include:

[0156] The maximum weight value F Tmax Modify and set to

[0157] In one of the embodiments, the method further includes: when the mapping data groups are all called, if the wireless charging transmitting end still does not receive a feedback signal from the wireless charging receiving end, reducing or shutting down the transmission power of the wireless charging transmitting coil.

[0158] The above-mentioned long-distance adaptive FSK modulation self-learning control method based on the relay coil is provided by modulating the depth parameter T of the FSK communication according to the FSK communication (w-1) The weight value F T(r-1) The mapping data group where the weight value is located is called in order from large to small to configure the operating parameters of the wireless charging transmitting coil, which can more quickly match the communication modulation depth parameters between the wireless charging receiving device such as a mobile phone and the wireless charger transmitting end, and when a certain communication modulation depth parameter can be used to receive the feedback signal sent by the wireless charging receiving end based on the communication information, the weight value corresponding to the communication modulation depth parameter will be increased, so that when the same wireless charging receiving device uses the wireless charger for charging again, the communication modulation depth parameter can be called and used earlier, and the purpose of rapid response can be achieved through self-learning. In the case of long-distance wireless charging across the table, the charging device and the receiving device can also respond quickly.

[0159] Based on the above content, the present application also provides a wireless charger.

[0160] A wireless charger includes a computer storage medium, wherein a computer program is stored on the computer storage medium, and when the program is executed by a processor, the method described in any one of the above embodiments is implemented, so that the program of the wireless charger can be easily upgraded and modified.

[0161] In addition, the present application also provides a computer storage medium.

[0162] A computer storage medium stores a computer program, which, when executed by a processor, implements the method described in any one of the above embodiments. The wireless charger can be easily upgraded and modified.

[0163] In the above content, at least in some embodiments, the object of the present invention is to overcome or improve at least one drawback of the prior art, or to provide a useful alternative. The set of outlined embodiments is provided to anticipate potential patent claims based on the selection of technical features disclosed in the following "Detailed Description", and this set of outlined embodiments is not intended to limit the scope of the expandable claims in any way. Detailed Description

[0164] In this patent document, the various embodiments discussed below and used to describe the principles or methods of the present disclosure are for illustrative purposes only and should not be construed in any way as limiting the scope of the present disclosure. Those skilled in the art should understand that the principles or methods of the present disclosure can be implemented in any appropriately arranged wireless charging system. Preferred embodiments of the present disclosure will be described below. In the following description, detailed descriptions of well-known functions or configurations will be omitted to avoid obscuring the subject matter of the present disclosure with unnecessary details. Moreover, the terms used herein will be defined according to the functions of this application. Therefore, the terms may vary according to the intention or usage of the user or operator. Therefore, the terms used herein must be understood based on the descriptions made herein.

[0165] A control method for a long-distance adaptive wireless charging system, the method comprising: setting the input voltage of a wireless charging transmitting coil to a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to a first duty cycle, and continuously collecting the characteristic values q of n wireless charging transmitting coils at a set period within a first time period from S0 to S1 n , and obtaining a first characteristic value Q1 with reference to formula (I):

[0166] Q1 = [(q1 + q2 + q3 +... + q n ) - (q min + q max )] / (n - 2) (I)

[0167] where q min is the minimum value among the characteristic values q of n wireless charging transmitting coils n .

[0168] q max is the maximum value among the characteristic values q of n wireless charging transmitting coils n .

[0169] n is a positive integer greater than or equal to 3.

[0170] Determine whether the first characteristic value Q1 is less than or equal to a first set value. If so, determine that there is a relay coil in the wireless charging system, and obtain a second characteristic value Q2 of the wireless charging transmitting coil at time S2.

[0171] The moment S2 is any moment within the first time period other than S0 to S1.

[0172] Set the transmission frequency of the wireless charging transmitting coil to the second transmission frequency, and obtain the average eigenvalue q of the wireless charging transmitting coil within the second time period from S x0 to S x1 . x .

[0173] S x0 to S x1 The second time period is any time period within the first time period other than S0 to S1.

[0174] The second transmission frequency is greater than the first transmission frequency.

[0175] Obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (2):

[0176] D1 = b × e ax (2)

[0177] where a and b are constants, and the value of x is the value of the average eigenvalue q x .

[0178] Calculate the first FSK communication modulation depth parameter T1 based on the distance D1 between the wireless charging transmitting coil and the relay coil, and set the weight value of the first FSK communication modulation depth parameter to F T1 .

[0179] Modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the first FSK communication modulation depth parameter, and determine whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If not, calculate the second FSK communication modulation depth parameter T2 with reference to formula (3):

[0180] Tw = T(w - 1) + △T × h (3)

[0181] where Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T(w - 1) is the basic FSK communication modulation depth parameter of Tw, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, and w is a positive integer.

[0182] Modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the second FSK communication modulation depth parameter, and determine again whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If so, obtain the weight value F of T2 with reference to formula (4): T2 :

[0183]

[0184] Among them, k T is the magnification, L T is a constant, F Tr and F T(r-1) is the weight value and F T(r-1) F Tr The basic weight value, that is, F Tr The weight value before the change, r is a positive integer.

[0185] D1, T1, F T1 , Q2 is recorded and set as the fifth mapping data group.

[0186] D1, T2, F T2 , Q2 is recorded and set as the sixth mapping data group.

[0187] In one embodiment, the default F T0 The value of is 0.

[0188] In one embodiment, the method further includes: setting h to a positive number and adjusting it in a gradually increasing direction, and determining whether h is greater than or equal to a second set value; if so, setting h to a negative number and adjusting it in a gradually decreasing direction.

[0189] In one embodiment, the method further comprises: T1 and F T2 The size order sets the order in which the first mapping data group and the second mapping data group are called.

[0190] In one embodiment, the method further includes: determining F T2 Is it greater than F? T1 If so, when calling the mapping data, the second mapping data group is called before the first mapping data group; otherwise, the first mapping data group is called before the second mapping data group.

[0191] In one embodiment, the method further includes: when determining F T2 Greater than F T1 When F T2 Is it greater than the third set value? If so, the second mapping data set is set as the default mapping data set for wireless charging system information modulation when the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0192] In one embodiment, the method further comprises: setting k by adjusting T The value of is used to adjust the speed of changing the sequence of each mapping data group when multiple mapping data groups are called.

[0193] In one embodiment, the first PING power or the first PING voltage is calculated according to the distance D1 between the wireless charging transmitting coil and the relay coil.

[0194] The transmitting power of the wireless charging transmitting coil is set to the first PING power, or the input voltage of the wireless charging transmitting coil is set to the first PING voltage, and it is determined whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If so, the transmitting power of the wireless charging transmitting coil is adjusted according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end.

[0195] The distance D1, the first PING power and / or the first PING voltage, and the second characteristic value Q2 are recorded and set as the third mapping data set, or the first PING power and / or the first PING voltage are recorded and set to the first mapping data set.

[0196] In one of the embodiments, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes: determining whether the first characteristic value Q1 is greater than or equal to a fourth set value, and if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining the third characteristic value Q3 of the wireless charging transmitting coil at time S3.

[0197] The third characteristic value Q3 is recorded and set as the fourth mapping data set.

[0198] The S3 moment is any moment in the first time period other than S0 to S1.

[0199] The first setting value is greater than the fourth setting value.

[0200] In one of the embodiments, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes: determining whether the first characteristic value Q1 is greater than or equal to a fourth set value, and if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining the third characteristic value Q3 of the wireless charging transmitting coil at time S3.

[0201] The third characteristic value Q3 is recorded and set to the first mapping data set.

[0202] The S3 moment is any moment in the first time period other than S0 to S1.

[0203] The first setting value is greater than the fourth setting value.

[0204] In one of the embodiments, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes: determining whether the first characteristic value Q1 is greater than or equal to a fourth set value, and if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining the third characteristic value Q3 of the wireless charging transmitting coil at time S3.

[0205] The third eigenvalue Q3 is recorded and set as the fourth mapping data set, and the third eigenvalue Q3 is recorded and set to the first mapping data set.

[0206] The S3 moment is any moment in the first time period other than S0 to S1.

[0207] The first setting value is greater than the fourth setting value.

[0208] In one embodiment, the method further includes: setting the transmission power of the wireless charging transmitting coil to a first PING power, or setting the input voltage of the wireless charging transmitting coil to a first PING voltage, and determining whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end, and if not, adjusting the transmission power of the wireless charging transmitting coil to P1 according to formula (V), or adjusting the input voltage of the wireless charging transmitting coil to V1 according to formula (VI):

[0209] P i =P ping +△P×m (V)

[0210] V i =V ping +△V×m. (vi)

[0211] Among them, P i is the actual power value of the wireless charging transmitting coil, V i is the actual input voltage value of the wireless charging transmitting coil, P ping For the first PING power, V ping is the first PING voltage, △P is the minimum adjustment change unit of the wireless charging transmitting coil transmission power, △V is the minimum adjustment change unit of the wireless charging transmitting coil input voltage, m is an integer, i is a positive integer, and it is determined again whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If so, the weight value of P1 is increased accordingly to F P1 , or increase the weight of V1 to F V1， And according to the requirements of the wireless charging receiving end, the transmitting power of the wireless charging transmitting coil is adjusted to charge the wireless charging receiving end.

[0212] P1 and F P1 Record and set to the fifth mapping data group, or, V1, and F V1Record and set to the fifth mapping data group.

[0213] In one embodiment, refer to formula (VII) to obtain the weight value F of P1 P1 , refer to formula (8) to obtain the weight value F of V1 V1 :

[0214]

[0215] Among them, k p and k v is the magnification, L p and L v is a constant, F Pj 、F P(j-1) 、F Vj and F V(j-1) is the weight value and F P(j-1) F Pj The basic weight value, F V(j-1) F Vj The basic weight value of j is a positive integer. In this embodiment, F P(j-1) F Pj The weight value before the change, F V(j-1) F Vj The weight value before the change.

[0216] In one embodiment, the default F P0 The value is 0, the default F V0 The value of is 0.

[0217] In one embodiment, the method further includes: setting m to a positive number and adjusting it in a gradually increasing direction, and determining whether m is greater than or equal to a second set value; if so, setting m to a negative number and adjusting it in a gradually decreasing direction.

[0218] In one embodiment, the method further includes: when the distance D1 between the wireless charging transmitting coil and the relay coil is constant, changing the relative position of the wireless charging receiving coil and the wireless charging transmitting coil, referring to formula (5) to obtain the transmission power adjustment P2 of the wireless charging transmitting coil, and referring to formula (7) to obtain the weight value F of P2 P2 Alternatively, refer to formula (six) to obtain the input voltage adjustment V2 of the wireless charging transmitting coil, and refer to formula (eight) to obtain the weight value F of V2 V2 .

[0219] P2、F P2 Record and set to the sixth mapping data group, or, V2, F V2 Record and set to the sixth mapping data group.

[0220] Judgement F P2 Is it greater than F?P1 If so, when calling the mapping data, the sixth mapping data group is called before the fifth mapping data group; otherwise, the fifth mapping data group is called before the sixth mapping data group.

[0221] In one embodiment, the method further includes: determining F P1 Is it greater than the third set value? If so, the fifth mapping data set is set as the default mapping data set of the wireless charging system when the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0222] In one embodiment, the method further comprises: setting k by adjusting p or k v The value of is used to adjust the speed of changing the priority order when the fifth mapping data group and the sixth mapping data group are called.

[0223] In one embodiment, the method further comprises:

[0224] According to the distance D1 between the wireless charging transmitting coil and the relay coil, a first ASM communication demodulation width parameter is calculated.

[0225] The first ASM communication demodulation width parameter is recorded and set in the first mapping data group.

[0226] In one embodiment, the method further comprises:

[0227] According to the distance D1 between the wireless charging transmitting coil and the relay coil, a first FSK communication modulation depth parameter is calculated.

[0228] The first FSK communication modulation depth parameter is recorded and set in the first mapping data group.

[0229] In one embodiment, the method further comprises:

[0230] According to the distance D1 between the wireless charging transmitting coil and the relay coil, a first ASM communication demodulation width parameter and a first FSK communication modulation depth parameter are calculated.

[0231] The first ASM communication demodulation width parameter and the first FSK communication modulation depth parameter are recorded and set in the first mapping data group.

[0232] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter G1 according to a distance D1 between the wireless charging transmitting coil and the relay coil, and setting a weight value of the first ASM communication demodulation width parameter G1 to F G1 .

[0233] The first ASM communication demodulation width parameter G1 is used to demodulate the information received by the wireless charging transmitter, and it is determined whether the wireless charging transmitter obtains the charging requirement parameter information fed back by the wireless charging receiver. If not, the second ASM communication demodulation width parameter G2 is calculated with reference to formula (IX):

[0234] G s =G (s-1) +△G×u (IX)

[0235] Among them, G s is the actual ASM communication demodulation width parameter of the wireless charging transmitter, G (s-1) G s The basic ASM communication demodulation width parameter, △G is the minimum adjustment change unit of the ASM communication demodulation width parameter, u is an integer, and s is a positive integer.

[0236] The information received by the wireless charging transmitter is demodulated using the second ASM communication demodulation width parameter G2, and it is determined again whether the wireless charging transmitter has obtained the charging requirement parameter information fed back by the wireless charging receiver. If so, the weight value F of G2 is obtained by referring to formula (10). G2 :

[0237]

[0238] Among them, k G is the magnification, L G is a constant, F Gy and F G(y-1) is the weight value and F G(y-1) F Gy The basic weight value, that is, F Gy The value before the change. y is a positive integer.

[0239] D1, G1, F G1 , Q2 is recorded and set as the seventh mapping data group.

[0240] D1, G2, F G2 , Q2 is recorded and set as the eighth mapping data group.

[0241] In one embodiment, the default F G0 The value of is 0.

[0242] In one embodiment, the method further includes: setting u to a positive number and adjusting it in a gradually increasing direction, and determining whether u is greater than or equal to a second set value; if so, setting u to a negative number and adjusting it in a gradually decreasing direction.

[0243] In one embodiment, the method further comprises: G1 and F G2The order of size sets the order in which the seventh mapping data group and the eighth mapping data group are called.

[0244] In one embodiment, the method further includes: determining F G2 Is it greater than F? G1 If so, when calling the mapping data, the eighth mapping data group is called before the seventh mapping data group; otherwise, the seventh mapping data group is called before the eighth mapping data group.

[0245] In one embodiment, the method further includes: when determining F G2 Greater than F G1 When F G2 Is it greater than the fourth set value? If so, the eighth mapping data group is set as the default mapping data group for wireless charging system information demodulation when the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0246] In one embodiment, the method further comprises: setting k by adjusting G The value of is used to adjust the speed of changing the sequence of each mapping data group when it is called when multiple mapping data groups are used for information demodulation.

[0247] In one of the embodiments, each mapping data group is updated into FLASH via I2C.

[0248] In one of the embodiments, the changed weight value is updated to FLASH via I2C.

[0249] In one of the embodiments, a fourth characteristic value Q4 of the wireless charging transmitting coil at time S4 ​​is obtained, and it is determined whether the fourth characteristic value Q4 is less than or equal to the second characteristic value Q2. If so, it is determined whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, the transmission power of the wireless charging transmitting coil is adjusted according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end.

[0250] The time S4 ​​is not in the first time period from S0 to S1 and is located at a time point on the set cycle, that is, the fourth characteristic value Q4 of the wireless charging transmitting coil is periodically obtained.

[0251] In one of the embodiments, before determining whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, the method further includes:

[0252] It is determined whether the fourth eigenvalue Q4 is less than or equal to the third eigenvalue Q3. If so, the alarm indicator light in the control system turns on or the buzzer sounds.

[0253] In one embodiment, the first input voltage is between 4.5V and 5.5V.

[0254] In one embodiment, the first transmission frequency is between 0.1 Hz and 1 Hz.

[0255] In one embodiment, the second transmit frequency is between 100 kHz and 150 kHz.

[0256] In one embodiment, the first duty cycle is between 10% and 50%.

[0257] In one embodiment, the first duty cycle is 20%.

[0258] In one embodiment, the first set value is between 2.6 and 3.5.

[0259] In one embodiment, the first setting value is 3.

[0260] In one embodiment, the fourth setting value is between 1.8 and 2.5.

[0261] In one embodiment, the fourth setting value is 2.

[0262] In one embodiment, the value of the second setting value is between 7 and 15.

[0263] In one embodiment, the second setting value is between 5 and 12.

[0264] In one embodiment, the value of the second setting value is 11.

[0265] In one embodiment, the value of the second setting value is 9.

[0266] In one embodiment, the third setting value is between 3 and 10.

[0267] In one embodiment, the third setting value is between 4 and 8.

[0268] In one embodiment, the value of the third setting value is 5.

[0269] In one embodiment, the value of the third setting value is 7.

[0270] In one embodiment, the value of m is between -11 and 11.

[0271] In one embodiment, the value of m is between -8 and 8.

[0272] In one embodiment, the value of m is between -5 and 5.

[0273] In one embodiment, the value of m is between -7 and 7.

[0274] In one embodiment, the value of h is between -11 and 11.

[0275] In one embodiment, the value of h is between -8 and 8.

[0276] In one embodiment, the value of h is between -5 and 5.

[0277] In one embodiment, the value of h is between -7 and 7.

[0278] In one embodiment, the value of u is between -11 and 11.

[0279] In one embodiment, the value of u is between -8 and 8.

[0280] In one embodiment, the value of u is between -5 and 5.

[0281] In one embodiment, the value of u is between -7 and 7.

[0282] In one embodiment, the characteristic value is a signal characteristic value of a wireless charging transmitting coil voltage.

[0283] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil power.

[0284] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil current.

[0285] In one embodiment, the first characteristic value Q1 is the oscillation attenuation coefficient of the entire system. The attenuation coefficient can be used to detect whether the relay coil exists and whether there is a metal foreign body on the relay coil.

[0286] In one embodiment, the first characteristic value Q1 is the energy oscillation attenuation coefficient of the entire system under a driving signal of 0.5 Hz.

[0287] In one embodiment, when the first characteristic value Q1 is greater than or equal to the first set value, the wireless charging transmitter continues to wait.

[0288] The control method of a long-distance adaptive wireless charging system provided above allows the wireless charging transmitting coil to perform a short period of very weak charged operation under the environment of the first input voltage, the first transmission rate and the first duty cycle in the initial stage, and obtains the first characteristic value Q1 of the transmitting coil by periodically collecting the characteristic value of the transmitting coil and according to a specific logical relationship. According to the first characteristic value Q1, it can be determined whether there is a relay coil in the system. If there is a relay coil, an innovative fitting formula is used to calculate the distance D1 between the transmitting coil and the relay coil in combination with the second set of operation logic. After knowing the distance, the first FSK communication modulation depth parameter T1 is calculated by the third set of operation logic, and the weight value of the first FSK communication modulation depth parameter is set to F T1 When the first FSK communication modulation depth parameter modulation signal is used and no feedback information is received from the wireless charging receiving end, the FSK communication modulation depth parameter is adjusted to T2. If feedback information is received from the wireless charging receiving end under the T2 parameter, it is more appropriate to record the current environment T2 parameter. In order to first call the T2 parameter when wireless charging is performed again to achieve the purpose of fast communication, the weight value of the T2 parameter is set to F. T2 , D1, T1, F T1 , Q2 and set as the first mapping data group. T2 , Q2 is recorded and set as the second mapping data group. This setting makes it easy to call the FSK communication modulation depth parameters with large weight values ​​according to the order of weight values ​​when wireless charging is performed again (the larger the weight value, the greater the probability that the parameter meets the communication in the current environment), so as to speed up the handshake speed between the transmitter and the receiver, adapt to the EPP architecture, and make the wireless charging system run fast charging more often during wireless charging, thereby increasing the charging speed, saving charging time, and improving the user experience.

[0289] According to the above method, the present application also provides a control method for applying the learning results of the above method.

[0290] A wireless charging self-learning control method for long-distance adaptive FSK communication modulation, the method comprising: determining whether a wireless charging transmitting end receives a charging request signal sent by a wireless charging receiving end, and if so, determining whether a wireless charging transmitting end receives a charging request signal sent by a wireless charging receiving end according to a weight value F Tr The mapping data group where the weight value is located is called in order from large to small to modulate the communication information of the wireless charging transmitter, and it is determined whether the wireless charging transmitter receives the feedback signal sent by the wireless charging receiver based on the communication information. If so, the FSK communication modulation depth parameter that can currently receive feedback information is used to modulate the information sent by the wireless charging transmitter to the wireless charging receiver.

[0291] F Tr is the weight value F in any of the above embodimentsTr .

[0292] The FSK communication modulation depth parameter is the FSK communication modulation depth parameter in any one of the above embodiments.

[0293] The mapping data group is the mapping data group in any one of the above embodiments.

[0294] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, increasing the weight value F in the mapping data group called at this time Tr .

[0295] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, increase the weight value F according to formula (IV) Tr .

[0296] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, determining the weight value F in the mapping data group called at this time Tr Is it the maximum weight value F? Tmax If not, increase the weight value F in the mapping data group called at this time Tr , at the same time, reduce the maximum weight value F Tmax .

[0297] In one embodiment, the method further includes: referring to formula (IV), increasing the weight value F Tr , and at the same time the maximum weight value F Tmax Modify and set to

[0298] Among them, k T is the magnification, L T is a constant, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, and h is an integer.

[0299] In one of the embodiments, the method further includes: when all mapping data groups are called, if the wireless charging transmitting end still does not receive a feedback signal from the wireless charging receiving end, reducing or shutting down the transmission power of the wireless charging transmitting coil.

[0300] In one of the embodiments, before determining whether the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, the method includes: setting the input voltage of the wireless charging transmitter coil to a first input voltage, the transmission frequency to a first transmission frequency, and the duty cycle of the first transmission frequency to a first duty cycle, obtaining the fifth characteristic value Q5 of the wireless charging transmitter coil at time S5, and determining whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, and if so, continuing to determine whether the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver.

[0301] The S5 moment is any moment when the wireless charging transmitting coil starts to work.

[0302] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0303] The first input voltage is the first input voltage in any one of the above embodiments.

[0304] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0305] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0306] The above-mentioned wireless charging self-learning control method of long-distance adaptive FSK communication modulation is provided. When the wireless charging transmitter receives the charging request signal sent by the wireless charging receiver, according to the weight value F Tr The mapping data group where the weight value is located is called in order from large to small to modulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter receives the feedback signal sent by the wireless charging receiver based on the communication information. If so, the FSK communication modulation depth parameter that can currently receive feedback information is used to modulate the information sent by the wireless charging transmitter to the wireless charging receiver. Since whether the receiving end can perform fast charging (generally 15 watts) or wireless charging of the EPP architecture with the transmitting end also depends on whether the receiving end can complete the charging protocol (complete authentication or binding) with the transmitting end within the specified time, it is set in this way. According to the above content, it can be seen that the weight value F Tr The larger the value is, the closer the operating parameters in the mapping data group are to the operating parameters of the wireless charging system composed of the user's commonly used receiving end, transmitting end and relay. As a result, the user's commonly used receiving end can respond quickly in communication when wireless charging is required, preventing the handshake from failing and only low-power (usually 5 watts) charging can be performed, thereby improving the response speed and enhancing the user experience.

[0307] According to the above method, the present application also provides another control method using the learning results of the above method.

[0308] A control method for a long-distance adaptive wireless charging system, the method comprising: setting an input voltage of a wireless charging transmitting coil to a first input voltage, a transmitting frequency to a first transmitting frequency, and a duty cycle of the first transmitting frequency to a first duty cycle, obtaining a fifth characteristic value Q5 of the wireless charging transmitting coil at time S5, and determining whether the fifth characteristic value Q5 is less than or equal to a second characteristic value Q2, and if so, determining whether a wireless charging transmitting end receives a charging request signal sent by a wireless charging receiving end, and if so, adjusting the transmitting power of the wireless charging transmitting coil according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end.

[0309] The S5 moment is any moment when the wireless charging transmitting coil starts to work.

[0310] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0311] The first input voltage is the first input voltage in any one of the above embodiments.

[0312] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0313] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0314] In one of the embodiments, before determining whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, the method further includes: setting the transmission power of the wireless charging transmitting coil to a first PING power, or setting the input voltage of the wireless charging transmitting coil to a first PING voltage.

[0315] The first PING power is the first PING power in any one of the above embodiments.

[0316] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0317] In one of the embodiments, before determining whether the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, the method further includes: determining whether the fifth characteristic value Q5 is less than or equal to the third characteristic value Q3, and if so, the alarm indicator light in the control system turns on or the buzzer sounds.

[0318] The third eigenvalue Q3 is the third eigenvalue Q3 in any one of the above embodiments.

[0319] In one of the embodiments, before determining whether the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, the method further includes: determining whether the fifth characteristic value Q5 is less than or equal to the fourth set value, and if so, the alarm indicator light in the control system turns on or the buzzer sounds.

[0320] The fourth setting value is the fourth setting value in any one of the above embodiments.

[0321] The control method of a long-distance adaptive wireless charging system provided above obtains the characteristic value (fifth characteristic value Q5) of the transmitting coil at a certain moment and compares it with the characteristic value (second characteristic value Q2) of the transmitting coil in the case where there is a relay coil and a wireless charging receiving end on the relay coil, so as to quickly pre-judge whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil, and then accurately judge whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil by judging whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. Such a setting enables the wireless charging system applying the control method to respond quickly when wireless charging is performed again, and enter the wireless charging program to output energy more quickly, thereby improving the user experience.

[0322] According to the above method, the present application also provides another control method using the learning results of the above method.

[0323] A self-learning control method for a long-distance adaptive wireless charging system, the method comprising: setting the input voltage of the wireless charging transmitting coil to a first input voltage, the transmitting frequency to a first transmitting frequency, the duty cycle of the first transmitting frequency to a first duty cycle, obtaining a fifth eigenvalue Q5 of the wireless charging transmitting coil at time S5, and determining whether the fifth eigenvalue Q5 is less than or equal to the second eigenvalue Q2, and if so, determining the fifth eigenvalue Q5 according to the weight value F Pj or F Vj The mapping data group where the weight value is located is called in order from large to small to configure the operating parameters of the wireless charging transmitting coil, and it is determined whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If so, the transmission power of the wireless charging transmitting coil is adjusted according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end.

[0324] The S5 moment is any moment when the wireless charging transmitting coil starts to work.

[0325] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0326] F Pj is the weight value F in any of the above embodiments Pj .

[0327] F Vj is the weight value F in any of the above embodiments Vj .

[0328] The first input voltage is the first input voltage in any one of the above embodiments.

[0329] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0330] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0331] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, increasing the weight value F in the mapping data group called at this time Pj or F Vj .

[0332] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, increasing the weight value F in the mapping data group called at this time Pj or F Vj , while reducing the weight value in the previous mapping data group in the calling order.

[0333] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end, increase the weight value F according to formula (VII) Pj , refer to formula (8) to increase the weight value F Vj .

[0334] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, determining the weight value F in the mapping data group called at this time Pj or F Vj Is it the maximum weight value F? Pmax or F Vmax If not, increase the weight value F in the mapping data group called at this time Pj or F Vj , at the same time, reduce the maximum weight value F Pmax Or the maximum weight value F Vmax .

[0335] In one embodiment, the method further includes: referring to formula (5), increasing the weight value F Pj , refer to formula (VI) to increase the weight value F Vj , and at the same time the maximum weight value F Pmax Modify and set to The maximum weight value F Vmax Modify and set to

[0336] Among them, k P and k v is the magnification, L P and Lv is a constant, △P is the minimum adjustment change unit of the wireless charging transmitting coil transmission power, △V is the minimum adjustment change unit of the wireless charging transmitting coil input voltage, and m is an integer.

[0337] In one of the embodiments, the method further includes: when all mapping data groups are called, the wireless charging transmitting end still does not receive the charging request signal sent by the wireless charging receiving end, then the transmission power of the wireless charging transmitting coil is set to the first PING power, or the input voltage of the wireless charging transmitting coil is set to the first PING voltage.

[0338] The first PING power is the first PING power in any one of the above embodiments.

[0339] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0340] In one embodiment, when all mapping data groups are called, the wireless charging transmitter still does not receive the charging request signal sent by the wireless charging receiver, then the transmission power of the wireless charging transmitter coil is set to the first PING power, or the input voltage of the wireless charging transmitter coil is set to the first PING voltage, and it is determined whether the wireless charging transmitter receives the charging request signal sent by the wireless charging receiver. If not, the transmission power of the wireless charging transmitter coil is adjusted to P3 with reference to formula (V), or the input voltage of the wireless charging transmitter coil is adjusted to V3 with reference to formula (VI), and it is determined again whether the wireless charging transmitter receives the charging request signal sent by the wireless charging receiver. If so, the weight value F of P3 is obtained with reference to formula (VII). P3 , or refer to formula (8) to obtain the weight value F of V3 V3 , and adjust the transmission power of the wireless charging transmitting coil according to the requirements of the wireless charging receiving end to charge the wireless charging receiving end.

[0341] P3 and F P3 Record and set to the ninth mapping data group, or, set V3, and F V3 Record and set to the ninth mapping data group.

[0342] The first PING power is the first PING power in any one of the above embodiments.

[0343] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0344] The self-learning control method of a long-distance adaptive wireless charging system provided above obtains the characteristic value (fifth characteristic value Q5) of the transmitting coil at a certain moment and compares it with the characteristic value (second characteristic value Q2) of the transmitting coil in the case where there is a relay coil and a wireless charging receiving end on the relay coil, so as to quickly predict whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil, and then predicts whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil according to the weight value F. Pj or F Vj The mapping data group where the weight value is located is called in order from large to small to directly configure the operating parameters of the wireless charging transmitting coil, so as to quickly adapt to the matching requirements of commonly used receiving terminals. For the receiving terminals commonly used by users, this method can allow the commonly used receiving terminals to be powered more quickly and send charging request signals to the transmitting terminal, thereby improving the response speed of the wireless charging system to the commonly used receiving terminals, that is, the wireless charging system applying the control method can respond quickly when wireless charging is performed again, enter the wireless charging program more quickly to output energy, and improve the user experience.

[0345] According to the above method, the present application also provides another control method using the learning results of the above method.

[0346] A wireless charging self-learning control method for long-distance adaptive ASM communication demodulation, the method comprising: determining whether the wireless charging transmitting end has received a signal for feeding back charging demand parameters sent by the wireless charging receiving end, and if so, determining the charging demand parameters according to the weight value F. Gy The mapping data group where the weight value is located is called in order from large to small to demodulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter has obtained the charging requirement parameter information fed back by the wireless charging receiver. If so, the ASM communication demodulation width parameter that can currently obtain the charging requirement parameter information of the wireless charging receiver is used to demodulate the information received by the wireless charging transmitter.

[0347] F Gy is the weight value F in any of the above embodiments Gy .

[0348] The ASM communication demodulation width parameter is the ASM communication demodulation width parameter in any one of the above embodiments.

[0349] The mapping data group is the mapping data group in any one of the above embodiments.

[0350] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter obtains the charging requirement parameter information fed back by the wireless charging receiver, increasing the weight value F in the mapping data group called at this time Gy .

[0351] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter obtains the charging requirement parameter information fed back by the wireless charging receiver, increase the weight value F according to formula (10) Gy .

[0352] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter obtains the charging requirement parameter information fed back by the wireless charging receiver, determining the weight value F in the mapping data group called at this time Gy Is it the maximum weight value F? Gmax If not, increase the weight value F in the mapping data group called at this time Gy , at the same time, reduce the maximum weight value F Gmax .

[0353] In one embodiment, the method further includes: referring to formula (10), increasing the weight value F Gy , and at the same time the maximum weight value F Gmax Modify and set to

[0354] Among them, k G is the magnification, L G is a constant, △G is the minimum adjustment change unit of the ASM communication demodulation width parameter, and u is an integer.

[0355] In one of the embodiments, the method further includes: when all mapping data groups are called, if the wireless charging transmitting end still does not obtain the charging requirement parameter information fed back by the wireless charging receiving end, then turning off the transmission power of the wireless charging transmitting coil.

[0356] In one of the embodiments, before determining whether the wireless charging transmitting end has received a signal sent by the wireless charging receiving end for feeding back the charging demand parameters, the method includes: setting the input voltage of the wireless charging transmitting coil to a first input voltage, the transmitting frequency to a first transmitting frequency, and the duty cycle of the first transmitting frequency to a first duty cycle, obtaining a fifth eigenvalue Q5 of the wireless charging transmitting coil at time S5, and determining whether the fifth eigenvalue Q5 is less than or equal to the second eigenvalue Q2, and if so, continuing to determine whether the wireless charging transmitting end has received a signal sent by the wireless charging receiving end for feeding back the charging demand parameters.

[0357] The S5 moment is any moment when the wireless charging transmitting coil starts to work.

[0358] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0359] The first input voltage is the first input voltage in any one of the above embodiments.

[0360] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0361] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0362] In one of the embodiments, each changed mapping data group is updated into FLASH via I2C.

[0363] In one of the embodiments, each changed weight value is updated to FLASH via I2C.

[0364] The above-mentioned wireless charging self-learning control method of long-distance adaptive ASM communication demodulation is

[0365] When the wireless charging transmitter receives the signal sent by the wireless charging receiver for feeding back the charging demand parameter, according to the weight value F Gy The mapping data group where the weight value is located is called in order from large to small to demodulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter has obtained the charging requirement parameter information fed back by the wireless charging receiver. If so, the ASM communication demodulation width parameter that can currently obtain the charging requirement parameter information of the wireless charging receiver is used to demodulate the information received by the wireless charging transmitter. Since whether the receiving end can perform fast charging (generally 15 watts) or wireless charging of the EPP architecture with the transmitting end also depends on whether the receiving end can complete the charging protocol (complete authentication or binding) with the transmitting end within the specified time, it is set in this way. According to the above content, it can be seen that the weight value F Gy The larger the value is, the closer the operating parameters in the mapping data group are to the operating parameters of the wireless charging system composed of the user's commonly used receiving end, transmitting end and relay. As a result, the user's commonly used receiving end can respond quickly in communication when wireless charging is required, preventing the handshake from failing and only low-power (usually 5 watts) charging can be performed, thereby improving the response speed and enhancing the user experience.

[0366] According to the above method, the present application also provides another control method using the learning results of the above method.

[0367] A long-distance adaptive FSK modulation self-learning control method based on a relay coil, a wireless charging system stores several mapping data groups that can be read and called by a computer processor. The data in the mapping data group includes: D1, T w 、F Tr , Q2. D1 is the distance between the relay coil and the wireless charging transmitting coil. T w F is the FSK communication modulation depth parameter of the wireless charging transmitter. Tr T wThe weight value of Q2 is the characteristic value of the wireless charging transmitting coil when the distance between the relay coil and the wireless charging transmitting coil is D1. Wherein, w is a positive integer. r is a positive integer. The method includes: setting the input voltage of the wireless charging transmitting coil to a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to a first duty cycle, determining whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, and if so, determining the charging request signal according to the weight value F. Tr The values ​​of the weight values ​​are called in descending order in the FSK communication modulation depth parameter T in the mapping data group where the weight value is located. w To modulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter receives the feedback signal sent by the wireless charging receiver based on the communication information. If so, the FSK communication modulation depth parameter T that can currently receive the feedback information is used. w Modulate the information sent by the wireless charging transmitter to the wireless charging receiver. The characteristic value is the oscillation attenuation coefficient of the voltage of the wireless charging transmitter coil, or the oscillation attenuation coefficient of the current, or the oscillation attenuation coefficient of the power.

[0368] In one embodiment, when it is determined that the wireless charging transmitter receives a feedback signal from the wireless charging receiver, the weight value F in the mapping data group called at this time is increased. Tr .

[0369] In one embodiment, when it is determined that the wireless charging transmitter receives the feedback signal from the wireless charging receiver, the weight value F is increased according to formula (IV). Tr .

[0370]

[0371] Among them, k T is the magnification, L T is a constant, F Tr and F T(r-1) is the weight value and F T(r-1) F Tr The basic weight value, that is, F Tr The weight value before the change, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, r is a positive integer, and h is an integer.

[0372] In one embodiment, the method further includes: setting h to a positive number and adjusting it in a gradually increasing direction, and determining whether h is greater than or equal to a second set value; if so, setting h to a negative number and adjusting it in a gradually decreasing direction.

[0373] In one embodiment, the method further comprises: setting k by adjusting TThe value of is used to adjust the speed of changing the sequence of each mapping data group when multiple mapping data groups are called.

[0374] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, determining the weight value F in the mapping data group called at this time Tr Is it the maximum weight value F? Tmax If not, increase the weight value F in the mapping data group called at this time Tr , at the same time, reduce the maximum weight value F Tmax .

[0375] In one embodiment, the maximum weight value F is reduced. Tmax The methods include:

[0376] The maximum weight value F Tmax Modify and set to Among them, k T is the magnification, L T is a constant, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, and h is an integer.

[0377] In one of the embodiments, the method further includes: when all mapping data groups are called, if the wireless charging transmitting end still does not receive a feedback signal from the wireless charging receiving end, reducing or shutting down the transmission power of the wireless charging transmitting coil.

[0378] In one embodiment, the method further includes a method for obtaining the distance D1 between the relay coil and the wireless charging transmitting coil: setting the transmitting frequency of the wireless charging transmitting coil to the second transmitting frequency, x0 To T x1 The average characteristic value q of the wireless charging transmitting coil is obtained in the second time period x The second transmission frequency is greater than the first transmission frequency. Refer to formula (2) to obtain the distance D1 between the wireless charging transmission coil and the relay coil:

[0379] D1=b×e ax (two)

[0380] Among them, a and b are constants, and the value of x is the average eigenvalue q x The value of .

[0381] In one embodiment, the method further includes a method for obtaining a second characteristic value Q2: under an environment where the input voltage of the wireless charging transmitting coil is set to the first input voltage, the transmitting frequency of the wireless charging transmitting coil is set to the first transmitting frequency, and the duty cycle of the transmitting frequency of the wireless charging transmitting coil is set to the first duty cycle, the characteristic values ​​q of n wireless charging transmitting coils are continuously collected according to a set period in a first time period from T0 to T1.n , and obtain the first eigenvalue Q1 with reference to formula (1):

[0382] Q1 = [(q1 + q2 + q3 +... + q n ) - (q min + q max )] / (n - 2) (1)

[0383] Wherein, q min is the minimum value among the eigenvalues q n of n wireless charging transmitting coils.

[0384] q max is the maximum value among the eigenvalues q n of n wireless charging transmitting coils. n is a positive integer greater than or equal to 3. Determine whether the first eigenvalue Q1 is less than or equal to the first set value. If so, it is determined that there is a relay coil in the wireless charging system, and the second eigenvalue Q2 of the wireless charging transmitting coil is obtained at time T2. Time T2 is any time within the first time period from non-T0 to T1. Store the second eigenvalue Q2 in the wireless charging system for retrieval when used next time.

[0385] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0386] A long-distance adaptive FSK modulation self-learning control method based on a relay coil. A number of mapping data groups that can be read and called by a computer processor are stored in the wireless charging system. The data in the mapping data group includes: T (w-1) , F T(r-1) . T (w-1) is the FSK communication modulation depth parameter of the wireless charging transmitting end. F T(r-1) is the weight value of T (w-1) . Wherein, w is a positive integer. r is a positive integer. The method includes: setting the input voltage of the wireless charging transmitting coil to the first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to the first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to the first duty cycle, determining whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, call the FSK communication modulation depth parameter T T(r-1) in the mapping data group where the weight value is located in descending order of the value of the weight value F (w-1) to modulate the communication information of the wireless charging transmitting end, and determine whether the wireless charging transmitting end receives a feedback signal sent by the wireless charging receiving end based on the communication information. If so, increase the weight value F T(r-1) with reference to formula (4), and use the FSK communication modulation depth parameter T (w-1) that can currently receive feedback informationModulate the information sent by the wireless charging transmitter to the wireless charging receiver.

[0387]

[0388] Among them, k T is the magnification, L T is a constant, F Tr and F T(r-1) is the weight value and F T(r-1) F Tr The basic weight value, that is, F Tr The weight value before the change, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, r is a positive integer, and h is an integer.

[0389] In one embodiment, the method further includes: when all mapping data groups are called, the wireless charging transmitter still does not receive the feedback signal from the wireless charging receiver, then select the FSK communication modulation depth parameter T in any group of mapping data groups. (w-1) Refer to formula (3) to calculate the FSK communication modulation depth parameter Tw:

[0390] Tw=T(w-1)+△T×h (III)

[0391] Among them, Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T(w-1) is the basic FSK communication modulation depth parameter of Tw, and △T is the minimum adjustment change unit of the FSK communication modulation depth parameter. The information sent by the wireless charging transmitter to the wireless charging receiver is modulated with the FSK communication modulation depth parameter Tw, and it is judged again whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If so, the FSK communication modulation depth parameter T that can currently receive feedback information is used. w Modulate the information sent by the wireless charging transmitter to the wireless charging receiver.

[0392] In one embodiment, the method further includes: when it is determined that the information sent by the wireless charging transmitter to the wireless charging receiver by modulating the FSK communication modulation depth parameter Tw can enable the wireless charging transmitter to receive feedback information from the wireless charging receiver, then refer to formula (IV) to obtain the weight value F of Tw Tr . Tw、F Tr Record and set as a new mapping data group for recall next time.

[0393] In one embodiment, the method further includes: when all mapping data groups are called, the wireless charging transmitting end still does not receive the feedback signal from the wireless charging receiving end, setting the transmitting frequency of the wireless charging transmitting coil to the second transmitting frequency, and x0 To S x1Obtain the average eigenvalue q of the wireless charging transmitting coil within the second time period x 。S x0 to S x1 The second time period is any time period within the first time period from non-S0 to S1. The second transmission frequency is greater than the first transmission frequency. Obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (II):

[0394] D1 = b × e ax (II)

[0395] where a and b are constants, and the value of x is the average eigenvalue q x value. According to the distance D1 between the wireless charging transmitting coil and the relay coil, calculate the first FSK communication modulation depth parameter T1, and set the weight value of the first FSK communication modulation depth parameter to F T1 。Modulate the information sent from the wireless charging transmitting end to the wireless charging receiving end with the first FSK communication modulation depth parameter, and determine whether the wireless charging transmitting end has received the feedback information from the wireless charging receiving end. If not, set the value of w to 2, and calculate the second FSK communication modulation depth parameter T2 with reference to formula (III):

[0396] Tw = T(w - 1) + △T × h (III)

[0397] where Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitting end, T(w - 1) is the basic FSK communication modulation depth parameter of Tw, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, and w is a positive integer. Modulate the information sent from the wireless charging transmitting end to the wireless charging receiving end with the second FSK communication modulation depth parameter T2, and determine again whether the wireless charging transmitting end has received the feedback information from the wireless charging receiving end. If so, set the value of r to 2, and then obtain the weight value F of T2 with reference to formula (IV) T2 ,and modulate the information sent from the wireless charging transmitting end to the wireless charging receiving end with the FSK communication modulation depth parameter T2. Record D1, T1, F T1 and set them as the first mapping data group. Record D1, T2, F T2 and set them as the second mapping data group.

[0398] In one embodiment, the method further includes: setting h as a positive number and adjusting it in the gradually increasing direction, and determining whether h is greater than or equal to the second set value. If so, set h as a negative number and adjust it in the gradually decreasing direction.

[0399] In one embodiment, the method further includes: adjusting and setting k TThe value of is used to adjust the speed of changing the sequence of each mapping data group when multiple mapping data groups are called.

[0400] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, determining the weight value F in the mapping data group called at this time Tr Is it the maximum weight value F? Tmax If not, increase the weight value F in the mapping data group called at this time Tr , at the same time, reduce the maximum weight value F Tmax .

[0401] In one embodiment, the maximum weight value F is reduced. Tmax The methods include:

[0402] The maximum weight value F Tmax Modify and set to

[0403] In one of the embodiments, the method further includes: when all mapping data groups are called, if the wireless charging transmitting end still does not receive a feedback signal from the wireless charging receiving end, reducing or shutting down the transmission power of the wireless charging transmitting coil.

[0404] The above-mentioned long-distance adaptive FSK modulation self-learning control method based on the relay coil is provided by modulating the depth parameter T of the FSK communication according to the FSK communication (w-1) The weight value F T(r-1) The mapping data group where the weight value is located is called in order from large to small to configure the operating parameters of the wireless charging transmitting coil, which can more quickly match the communication modulation depth parameters between the wireless charging receiving device such as a mobile phone and the wireless charger transmitting end, and when a certain communication modulation depth parameter can be used to receive the feedback signal sent by the wireless charging receiving end based on the communication information, the weight value corresponding to the communication modulation depth parameter will be increased, so that when the same wireless charging receiving device uses the wireless charger to charge, the communication modulation depth parameter can be called and used earlier, and the purpose of rapid response can be achieved through self-learning. In the case of long-distance wireless charging across the table, the charging device and the receiving device can also respond quickly.

[0405] In addition, based on the above content, the present application also provides a wireless charger.

[0406] A wireless charger includes a computer storage medium, on which a computer program is stored, and when the program is executed by a processor, the method in any one of the above embodiments is implemented, so that the program of the wireless charger can be easily upgraded and modified.

[0407] In addition, the present application also provides a computer storage medium.

[0408] A computer storage medium stores a computer program, which implements the method in any one of the above embodiments when executed by a processor. The wireless charger can be easily upgraded and modified.

[0409] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A self-learning control method for long-distance adaptive FSK modulation based on a relay coil, characterized in that: The wireless charging system stores a number of mapping data groups that can be read and called by a computer processor; the data in the mapping data groups include: (w-1) 、F T(r-1) ; The T (w-1) It is the FSK communication modulation depth parameter of the wireless charging transmitter; The F T(r-1) For the T (w-1) The weight value of where w is a positive integer; r is a positive integer; The method includes: setting the input voltage of the wireless charging transmitting coil to a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to a first duty cycle, determining whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end, and if so, determining the charging request signal according to the weight value F. T(r-1) The values ​​of the weight values ​​are called in descending order in the FSK communication modulation depth parameter T in the mapping data group where the weight value is located. (w-1) To modulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter receives the feedback signal sent by the wireless charging receiver based on the communication information. If so, refer to formula (IV) to increase the weight value F T(r-1) F Tr , and adopts the FSK communication modulation depth parameter T that can currently receive feedback information (w-1) Modulate the information sent by the wireless charging transmitter to the wireless charging receiver; Among them, k T is the magnification, L T is a constant, F Tr and F T(r-1) is the weight value and F T(r-1) F Tr The basic weight value, that is, F Tr The weight value before the change, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, and h is an integer.

2. The self-learning control method of long-distance adaptive FSK modulation based on relay coil according to claim 1 is characterized in that: The method further includes: When all the mapping data groups are called, the wireless charging transmitter still does not receive the feedback signal of the wireless charging receiver, then select the FSK communication modulation depth parameter T in any group of mapping data groups. (w-1) Refer to formula (3) to calculate the FSK communication modulation depth parameter Tw: Tw = T(w - 1)+△T×h (III) where Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitter, and T(w - 1) is the basic FSK communication modulation depth parameter of Tw, that is, the parameter before the change of Tw; The information sent by the wireless charging transmitter to the wireless charging receiver is modulated with the FSK communication modulation depth parameter Tw, and it is determined again whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If so, the FSK communication modulation depth parameter Tw that can currently receive the feedback information is used. w Modulate the information sent by the wireless charging transmitter to the wireless charging receiver.

3. The self-learning control method of long-distance adaptive FSK modulation based on relay coil according to claim 2 is characterized in that: The method further includes: When it is determined that the information sent by the wireless charging transmitter to the wireless charging receiver by modulating the FSK communication modulation depth parameter Tw can enable the wireless charging transmitter to receive the feedback information of the wireless charging receiver, the weight value F of Tw is obtained by referring to formula (IV). Tr ; The Tw, F Tr Record and set as a new mapping data group for recall next time.

4. The self-learning control method of long-distance adaptive FSK modulation based on relay coil according to claim 1 is characterized in that: The method further includes: When all the mapping data groups are called, the wireless charging transmitting end still does not receive the feedback signal of the wireless charging receiving end, then the transmitting frequency of the wireless charging transmitting coil is set to the second transmitting frequency, and the wireless charging transmitting coil is set to the second transmitting frequency. x0 To S x1 The average characteristic value q of the wireless charging transmitting coil is obtained in the second time period x ; The second transmission frequency is greater than the first transmission frequency; Obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (II): D1=b×e ax (two) Among them, a and b are constants, and the value of x is the average eigenvalue q x The value of The eigenvalue is the oscillation attenuation coefficient of the voltage of the wireless charging transmitting coil, or the oscillation attenuation coefficient of the current, or the oscillation attenuation coefficient of the power; According to the distance D1 between the wireless charging transmitting coil and the relay coil, a first FSK communication modulation depth parameter T1 is calculated, and a weight value of the first FSK communication modulation depth parameter is set to F T1 ; Modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the first FSK communication modulation depth parameter, and determine whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If not, set the value of w to 2, and calculate the second FSK communication modulation depth parameter T2 with reference to formula (III): Tw = T(w - 1)+△T×h (III) where Tw is the actual FSK communication modulation depth parameter of the wireless charging transmitter, and T(w - 1) is the basic FSK communication modulation depth parameter of Tw; The information sent by the wireless charging transmitter to the wireless charging receiver is modulated with the second FSK communication modulation depth parameter T2, and it is determined again whether the wireless charging transmitter has received the feedback information of the wireless charging receiver. If so, the value of r is set to 2, and the weight value F of T2 is obtained by referring to formula (IV). T2 , and uses FSK communication modulation depth parameter T2 to modulate the information sent by the wireless charging transmitter to the wireless charging receiver; The D1, T1, F T1 Record and set as the first mapping data group; The D1, T2, F T2 Record and set as the second mapping data set.

5. The self-learning control method of long-distance adaptive FSK modulation based on a relay coil according to any one of claims 1 to 4, characterized in that: The method further includes: Set h to be a positive number and adjust it in the direction of gradual increase, and determine whether h is greater than or equal to the second set value. If so, set h to be a negative number and adjust it in the direction of gradual decrease.

6. The self-learning control method of long-distance adaptive FSK modulation based on relay coil according to claim 1 is characterized in that: The method further includes: By adjusting the setting k T The value of is used to adjust the speed of changing the sequence of each mapping data group when multiple mapping data groups are called.

7. The self-learning control method of long-distance adaptive FSK modulation based on relay coil according to claim 1 is characterized in that: The method further includes: When it is determined that the wireless charging transmitting end receives the feedback signal of the wireless charging receiving end, the weight value F in the mapping data group called at this time is determined. Tr Is it the maximum weight value F? Tmax If not, then increase the weight value F in the mapping data group called at this time Tr , at the same time, reduce the maximum weight value F Tmax .

8. The self-learning control method of long-distance adaptive FSK modulation based on relay coil according to claim 7 is characterized in that: Reduce the maximum weight value F Tmax The methods include: The maximum weight value F Tmax Modify and set to 9. The self-learning control method of long-distance adaptive FSK modulation based on relay coil according to claim 1 is characterized in that: The method further includes: When all the mapping data groups have been called and the wireless charging transmitter still has not received the feedback signal from the wireless charging receiver, reduce or turn off the transmission power of the wireless charging transmitting coil.

10. A wireless charger, comprising a computer storage medium, wherein a computer program is stored on the computer storage medium, wherein: When the program is executed by the processor, it implements the self-learning control method described in any one of claims 1-9.

Images