Adaptive control method of long-distance wireless charging system based on relay coil and wireless charger

Abstract

The present invention provides an adaptive control method and wireless charger for a long-distance wireless charging system based on a relay coil. When a relay coil exists in the wireless charging system and the distance between the relay coil and the transmitting coil is D1, by obtaining the fifth characteristic value Q5 of the transmitting coil in the standby state and comparing it with the second characteristic value Q2 when the distance between the relay coil and the transmitting coil is D1, it is possible to quickly pre-judge whether there is a relay coil in the wireless charging system, and then adjust the wireless charging transmitting end by calling the PING parameter under the condition of distance D1, and then judge whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, so as to accurately determine whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil. Therefore, in the case of long-distance charging across a table, it is possible to quickly respond to entering the wireless charging program to output energy without drilling a hole to damage the desktop.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and particularly to an adaptive control method for a long-distance wireless charging system based on a relay coil and a wireless charger. Background Art

[0002] Wireless charging can wirelessly connect the power supply device and the power receiving device, solving the problem of messy power cords on the desktop, and is increasingly favored by home consumers. However, the current wireless charging systems on the market are all Qi-based wireless charging systems, and the charging distance of Qi-based wireless charging systems is only 5 mm - 8 mm. Most of our table tops are generally 15 mm - 30 mm thick. Therefore, existing wireless charging products need to drill holes under the table top to embed the wireless charger inside the table to solve the problem. However, drilling holes not only damages the table structure, affects the appearance, but also consumes manpower and working hours. At the same time, drilling holes in the table top to install the wireless charger will also greatly affect the popularization and application of the wireless charger in the office and home. Summary of the Invention

[0003] Based on the above, an adaptive control method for a long-distance wireless charging system based on a relay coil and a wireless charger that can adapt to a larger charging distance and a variety of table top thickness ranges are provided.

[0004] An adaptive control method for a long-distance wireless charging system based on a relay coil, the method includes: setting the input voltage of the wireless charging transmitting coil as a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil as a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil as a first duty cycle, and continuously collecting n characteristic values q of the wireless charging transmitting coil at a set period within a first time period from T0 to T1 n , and obtaining a first characteristic value Q1 by referring to formula (1):

[0005] Q = [(q1 + q 2+ q 3+...+ q n ) - (q min + q max )] / (n - 2) (1)

[0006] Wherein, the q min is the minimum value among the n characteristic values q n of the wireless charging transmitting coil;

[0007] The q max is the maximum value among the n characteristic values q n of the wireless charging transmitting coil;

[0008] Said n is a positive integer greater than or equal to 3;

[0009] 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 the second characteristic value Q2 of the wireless charging transmitting coil at time T2;

[0010] The time T2 is any time in the first time period other than T0 to T1;

[0011] The transmitting frequency of the wireless charging transmitting coil is set 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 ;

[0012] T x0 To T x1 The second time period is any time period within the first time period other than T0 to T1;

[0013] The second transmitting frequency is greater than the first transmitting frequency;

[0014] Refer to formula (2) to obtain the distance D1 between the wireless charging transmitting coil and the relay coil:

[0015] D = b × e ax (two)

[0016] Among them, a and b are constants, and the value of x is the average eigenvalue q x The value of

[0017] Calculating a first PING power or a first PING voltage according to a distance D1 between the wireless charging transmitting coil and the relay coil;

[0018] 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 a charging request signal sent by the wireless charging receiving end, and if so, adjusting the transmission power of the wireless charging transmitting coil according to the requirement of the wireless charging receiving end to charge the wireless charging receiving end;

[0019] The distance D1, the first PING power and / or the first PING voltage, and the second characteristic value Q2 are recorded and set as a first mapping data set.

[0020] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes:

[0021] Determine whether the first characteristic value Q1 is greater than or equal to a second set value, if so, continue to obtain the distance D1 between the wireless charging transmitting coil and the relay coil, otherwise, obtain the third characteristic value Q3 of the wireless charging transmitting coil at time T3;

[0022] Recording and setting the third characteristic value Q3 as a second mapping data set;

[0023] The time T3 is any time in the first time period other than T0 to T1;

[0024] The first setting value is greater than the second setting value.

[0025] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes:

[0026] Determine whether the first characteristic value Q1 is greater than or equal to a second set value, if so, continue to obtain the distance D1 between the wireless charging transmitting coil and the relay coil, otherwise, obtain the third characteristic value Q3 of the wireless charging transmitting coil at time T3;

[0027] Recording and setting the third characteristic value Q3 to the first mapping data group;

[0028] The time T3 is any time in the first time period other than T0 to T1;

[0029] The first setting value is greater than the second setting value.

[0030] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes:

[0031] Determine whether the first characteristic value Q1 is greater than or equal to a second set value, if so, continue to obtain the distance D1 between the wireless charging transmitting coil and the relay coil, otherwise, obtain the third characteristic value Q3 of the wireless charging transmitting coil at time T3;

[0032] Record and set the third eigenvalue Q3 to the second mapping data set, and record and set the third eigenvalue Q3 to the first mapping data set;

[0033] The time T3 is any time in the first time period other than T0 to T1;

[0034] The first setting value is greater than the second setting value.

[0035] 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 a charging request signal sent by the wireless charging receiving end. If not, adjusting the transmission power of the wireless charging transmitting coil to P1 with reference to Equation (3), or adjusting the input voltage of the wireless charging transmitting coil to V1 with reference to Equation (4):

[0036] P i =P ping +ΔP×m (3)

[0037] V i =V ping +ΔV×m; (4)

[0038] Wherein, 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 is the first PING power, V ping is the first PING voltage, ΔP is the minimum adjustment change unit of the transmission power of the wireless charging transmitting coil, ΔV is the minimum adjustment change unit of the input voltage of the wireless charging transmitting coil, 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 by F P1 , or the weight value of V1 is increased by F V1， and the transmission power of the wireless charging transmitting coil is adjusted according to the requirements of the wireless charging receiving end to charge the wireless charging receiving end;

[0039] Record and set the P1 and the F P1 into the third mapping data group, or record and set the V1 and the F V1 into the third mapping data group.

[0040] In one embodiment, the weight value F of P1 is obtained with reference to Equation (5) P1 , and the weight value F of V1 is obtained with reference to Equation (6) V1 :

[0041]

[0042] Wherein, k p and k v are magnification factors, L p and L v are constants, 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.

[0043] 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 third set value; if so, setting m to a negative number and adjusting it in a gradually decreasing direction.

[0044] 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 (III), and obtaining the weight value F of P2 by referring to formula (V). P2 Alternatively, refer to formula (iv) to obtain the input voltage adjustment V2 of the wireless charging transmitting coil, and refer to formula (vi) to obtain the weight value F of V2 V2 ;

[0045] The P2, F P2 Record and set to the fourth mapping data set, or, change the V2, F V2 Record and set to the fourth mapping data group;

[0046] Determine the F P2 Is it greater than the F P1 If so, when calling mapping data, the fourth mapping data group is called before the third mapping data group; otherwise, the third mapping data group is called before the fourth mapping data group.

[0047] In one embodiment, the method further comprises: determining the F P1 Is it greater than a fourth set value? If so, the third 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.

[0048] 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 third mapping data group and the fourth mapping data group are called.

[0049] In one embodiment, the method further comprises:

[0050] Calculating a first ASM communication demodulation width parameter according to a distance D1 between the wireless charging transmitting coil and the relay coil;

[0051] The first ASM communication demodulation width parameter is recorded and set in the first mapping data group.

[0052] In one embodiment, the method further comprises:

[0053] Calculating a first FSK communication modulation depth parameter according to a distance D1 between the wireless charging transmitting coil and the relay coil;

[0054] The first FSK communication modulation depth parameter is recorded and set into the first mapping data group.

[0055] In one embodiment, the method further comprises:

[0056] Calculate a first ASM communication demodulation width parameter and a first FSK communication modulation depth parameter according to a distance D1 between the wireless charging transmitting coil and the relay coil;

[0057] 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.

[0058] In one embodiment, the method further comprises:

[0059] 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 ;

[0060] The information sent by the wireless charging transmitter to the wireless charging receiver is modulated by the first FSK communication modulation depth parameter, and it is determined whether the wireless charging transmitter has received the feedback information of the wireless charging receiver. If not, the second FSK communication modulation depth parameter T2 is calculated according to formula (VII):

[0061] T w =T (w-1) +△T×h(VII)

[0062] Among them, T w is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T ( w- 1) T wThe basic FSK communication modulation depth parameter, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, and w is a positive integer;

[0063] The information sent by the wireless charging transmitter to the wireless charging receiver is modulated with the second FSK communication modulation depth parameter, and the wireless charging transmitter is checked again to see whether it has received the feedback information from the wireless charging receiver. If so, the weight value F of T2 is obtained by referring to formula (eight). T2 :

[0064]

[0065] 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 of , r is a positive integer;

[0066] The D1, T1, F T1 , Q2 is recorded and set as the fifth mapping data group;

[0067] The D1, T2, F T2 , Q2 is recorded and set as the sixth mapping data group.

[0068] 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 third set value; if so, setting h to a negative number and adjusting it in a gradually decreasing direction.

[0069] In one embodiment, the method further comprises: T1 and the F T2 The order in which the fifth mapping data group and the sixth mapping data group are called is set according to the order of size.

[0070] 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 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.

[0071] In one embodiment, the method further comprises: when determining that the F T2 Greater than the F T1 When the F T2Is it greater than the fourth set value? If so, set the sixth mapping data group as the default mapping data group for information modulation in the case where the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0072] In one embodiment, the method further includes: adjusting and setting the value of k T to adjust the replacement speed of the calling order of each mapping data group when adjusting multiple mapping data groups for information modulation.

[0073] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter G1 according to the distance D1 between the wireless charging transmitting coil and the relay coil, and setting the weight value of the first ASM communication demodulation width parameter G1 as F G1 ;

[0074] Demodulate the information received by the wireless charging transmitting end with the first ASM communication demodulation width parameter G1, and determine whether the wireless charging transmitting end has obtained the charging demand parameter information fed back by the wireless charging receiving end. If not, calculate a second ASM communication demodulation width parameter G2 with reference to formula (IX):

[0075] G s = G (s-1) + △G × u (IX)

[0076] where G s is the actual ASM communication demodulation width parameter of the wireless charging transmitting end, G ( s- 1) is the basic ASM communication demodulation width parameter of G s , △G is the minimum adjustment change unit of the ASM communication demodulation width parameter, u is an integer, and s is a positive integer;

[0077] Demodulate the information received by the wireless charging transmitting end with the second ASM communication demodulation width parameter G2, and determine again whether the wireless charging transmitting end has obtained the charging demand parameter information of the wireless charging receiving end. If so, obtain the weight value F of G2 with reference to formula (X) G2 :

[0078]

[0079] where k G is the magnification, L G is a constant, F Gy and F G(y-1) are weight values and F G(y-1) is the basic weight value of F Gy , and y is a positive integer;

[0080] D1, G1, F G1 , Q2 is recorded and set as the seventh mapping data group;

[0081] D1, G2, F G2 , Q2 is recorded and set as the eighth mapping data group.

[0082] 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 third set value; if so, setting u to a negative number and adjusting it in a gradually decreasing direction.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] In one of the embodiments, each mapping data group is updated into FLASH via I2C.

[0088] In one of the embodiments, the changed weight value is updated to FLASH via I2C.

[0089] In one embodiment, a fourth characteristic value Q4 of the wireless charging transmitting coil at time T4 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 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.

[0090] The time T4 is not in the first time period from T0 to T1 and is located at a time point in a set period, that is, the fourth characteristic value Q4 of the wireless charging transmitting coil is periodically obtained.

[0091] 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:

[0092] It is determined whether the fourth characteristic value Q4 is less than or equal to the third characteristic value Q3. If so, an alarm indicator light in the control system turns on or a buzzer sounds.

[0093] In one embodiment, the first input voltage is between 4.5V and 5.5V.

[0094] In one embodiment, the first transmitting frequency is between 0.1 Hz and 1 Hz.

[0095] In one of the embodiments, the second transmitting frequency is between 100 kHz and 150 kHz.

[0096] In one embodiment, the first duty cycle is between 10% and 50%.

[0097] In one of the embodiments, the first duty cycle is 20%.

[0098] In one embodiment, the first setting value is between 2.6 and 3.5.

[0099] In one embodiment, the first setting value is 3.

[0100] In one embodiment, the second set value is between 1.8 and 2.5.

[0101] In one embodiment, the second set value is 2.

[0102] In one embodiment, the third setting value is between 7 and 15.

[0103] In one embodiment, the third setting value is between 5 and 12.

[0104] In one embodiment, the value of the third setting value is 11.

[0105] In one embodiment, the value of the third setting value is 9.

[0106] In one embodiment, the fourth setting value is between 3 and 10.

[0107] In one embodiment, the fourth setting value is between 4 and 8.

[0108] In one embodiment, the value of the fourth setting value is 5.

[0109] In one embodiment, the value of the fourth setting value is 7.

[0110] In one embodiment, the value of m is between -11 and 11.

[0111] In one embodiment, the value of m is between -8 and 8.

[0112] In one embodiment, the value of m is between -5 and 5.

[0113] In one embodiment, the value of m is between -7 and 7.

[0114] In one embodiment, the value of h is between -11 and 11.

[0115] In one embodiment, the value of h is between -8 and 8.

[0116] In one embodiment, the value of h is between -5 and 5.

[0117] In one embodiment, the value of h is between -7 and 7.

[0118] In one embodiment, the value of u is between -11 and 11.

[0119] In one embodiment, the value of u is between -8 and 8.

[0120] In one embodiment, the value of u is between -5 and 5.

[0121] In one embodiment, the value of u is between -7 and 7.

[0122] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil voltage.

[0123] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil power.

[0124] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil current.

[0125] The above-mentioned adaptive control method of a long-distance wireless charging system based on a relay coil is provided. In the initial stage, the wireless charging transmitting coil is allowed 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. The characteristic value of the transmitting coil is periodically collected and the first characteristic value Q1 of the transmitting coil is obtained 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 in combination with the second set of operation logic to calculate the distance D1 between the transmitting coil and the relay coil. After knowing the distance, the first PING power or the first PING voltage is calculated by the third set of operation logic. At the same time, the transmission power or input voltage of the transmitting coil is set according to the parameters of the first PING power or the first PING voltage. Under the first PING power or the first PING voltage, the receiving end (such as a mobile phone with a wireless charging function) within the range of the charging system can be powered and send information to the transmitting end. In addition, at the distance D1, in order for the wireless charger to respond quickly when wireless charging is performed again, the present solution also obtains the second characteristic value Q2 at a certain moment after obtaining the first characteristic value Q1, so as to record the characteristic state of the transmitting coil when there is a relay coil and a wireless charging receiving end such as a mobile phone on the relay coil, and records and sets the distance D1, the first PING power and / or the first PING voltage, and the second characteristic value Q2 as the first mapping data group, so as to quickly retrieve the charging parameters in the first mapping data group when wireless charging is performed again, so that the wireless charger can respond quickly and improve the user experience.

[0126] According to the above method, the present application also provides a control method for applying the learning results of the above method.

[0127] An adaptive control method for a long-distance wireless charging system based on a relay coil, 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 T5, and determining whether the fifth characteristic value Q5 is less than or equal to the 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;

[0128] The T5 moment is any moment when the wireless charging transmitting coil starts working;

[0129] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments;

[0130] The first input voltage is the first input voltage in any one of the above embodiments;

[0131] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments;

[0132] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0133] 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;

[0134] The first PING power is the first PING power in any one of the above embodiments;

[0135] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0136] In one of the embodiments, before determining whether the wireless charging transmitter receives 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, an alarm indicator light in the control system turns on or a buzzer sounds;

[0137] The third eigenvalue Q3 is the third eigenvalue Q3 in any one of the above embodiments.

[0138] In one of the embodiments, before determining whether the wireless charging transmitter receives 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 second set value, and if so, an alarm indicator light in the control system turns on or a buzzer sounds;

[0139] The second setting value is the second setting value in any one of the above embodiments.

[0140] The above-mentioned adaptive control method of a long-distance wireless charging system based on a relay coil 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. Then, by judging whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, it can accurately determine whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil. 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.

[0141] According to the above method, the present application also provides another control method using the learning results of the above method.

[0142] 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 T5, 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;

[0143] The T5 moment is any moment when the wireless charging transmitting coil starts working;

[0144] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments;

[0145] The F Pj is the weight value F in any of the above embodiments Pj ;

[0146] The F Vj is the weight value F in any of the above embodiments Vj ;

[0147] The first input voltage is the first input voltage in any one of the above embodiments;

[0148] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments;

[0149] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0150] 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 .

[0151] 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.

[0152] 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 according to formula (5) Pj , refer to formula (six) to increase the weight value F Vj .

[0153] 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 .

[0154] In one embodiment, the method further includes: referring to formula (5) to increase 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

[0155] Among them, kP 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.

[0156] In one embodiment, the method further includes: when the mapping data group is completely called, the wireless charging transmitting end still does not receive the charging request signal sent by the wireless charging receiving end, 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;

[0157] The first PING power is the first PING power in any one of the above embodiments;

[0158] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0159] 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 (iii), or the input voltage of the wireless charging transmitting coil is adjusted to V3 with reference to formula (iv), 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 (v). P3 , or refer to formula (VI) to obtain the weight value F of V3 V3 , and adjusting 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;

[0160] The P3 and F P3 Record and set to the fifth mapping data group, or, set the V3 and the F V3 Recording and setting to the fifth mapping data group;

[0161] The first PING power is the first PING power in any one of the above embodiments;

[0162] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0163] 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.

[0164] According to the above method, the present application also provides another control method using the learning results of the above method.

[0165] 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;

[0166] The F Tr is the weight value F in any of the above embodiments Tr ;

[0167] The FSK communication modulation depth parameter is the FSK communication modulation depth parameter described in any one of the above embodiments.

[0168] 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 .

[0169] 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 (eight) Tr .

[0170] 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 .

[0171] In one embodiment, the method further includes: referring to formula (eight), increasing the weight value F Tr , and at the same time the maximum weight value F Tmax Modify and set to

[0172] 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.

[0173] 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.

[0174] 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, 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 T5, 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;

[0175] The T5 moment is any moment when the wireless charging transmitting coil starts working;

[0176] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments;

[0177] The first input voltage is the first input voltage in any one of the above embodiments;

[0178] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments;

[0179] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0180] 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.

[0181] According to the above method, the present application also provides another control method using the learning results of the above method.

[0182] 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;

[0183] The F Gy is the weight value F in any of the above embodiments Gy ;

[0184] The ASM communication demodulation width parameter is the ASM communication demodulation width parameter in any one of the above embodiments;

[0185] The mapping data group is the mapping data group in any one of the above embodiments.

[0186] 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 .

[0187] 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 according to formula (10) Gy .

[0188] 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 .

[0189] 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

[0190] 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.

[0191] 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.

[0192] In one embodiment, before determining whether the wireless charging transmitting end has received a signal for feeding back a charging requirement parameter sent by the wireless charging receiving end, the method includes: setting an input voltage of the 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 T5, 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 a signal for feeding back a charging requirement parameter sent by the wireless charging receiving end;

[0193] The T5 moment is any moment when the wireless charging transmitting coil starts working;

[0194] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments;

[0195] The first input voltage is the first input voltage in any one of the above embodiments;

[0196] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments;

[0197] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0198] In one of the embodiments, each changed mapping data group is updated into FLASH via I2C.

[0199] In one of the embodiments, each changed weight value is updated to FLASH via I2C.

[0200] The above-mentioned wireless charging self-learning control method of long-distance adaptive ASM communication demodulation is

[0201] 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 GyThe 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.

[0202] According to the above content, the adaptive working control method of this application during the user use stage is as follows:

[0203] An adaptive control method for a long-distance wireless charging system based on a relay coil, 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 T5, and determining whether the fifth characteristic value Q5 is less than or equal to a second characteristic value Q2, and if so, 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, and 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 requirements of the wireless charging receiving end. The power is for charging the wireless charging receiving end; the T5 moment is any moment when the wireless charging transmitting coil starts to work; the second characteristic value Q2 is a characteristic value of the wireless charging transmitting coil stored in the wireless charging system when there is a relay coil in the wireless charging system and the distance between the relay coil and the wireless charging transmitting coil is the distance D1; the first PING power and / or the first PING voltage are PING parameters stored in the wireless charging system when there is a relay coil in the wireless charging system and the distance between the relay coil and the wireless charging transmitting coil is the distance D1; the characteristic value 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.

[0204] In one embodiment, before determining whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, the method further includes obtaining a distance D1 between the relay coil and the wireless charging transmitting coil, and the method includes: setting the transmitting frequency of the wireless charging transmitting coil to the second transmitting frequency, at T 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 transmitting frequency is greater than the first transmitting frequency; refer to formula (2) to obtain the distance D1 between the wireless charging transmitting coil and the relay coil:

[0205] D1 = b × e ax (II)

[0206] Wherein, a and b are constants, and the value of x is the average eigenvalue q x value.

[0207] In one embodiment, the method further includes: retrieving the second eigenvalue Q2, the first PING power, and / or the first PING voltage corresponding to the distance D1 according to the distance D1.

[0208] In one embodiment, the method further includes: calculating the first PING power or the first PING voltage according to the distance D1 between the wireless charging transmitting coil and the relay coil, and storing it in the wireless charging system for retrieval when used next time;

[0209] In one embodiment, the method for obtaining the second eigenvalue Q2 further includes: in the same environment as obtaining the fifth eigenvalue Q5, continuously collecting the eigenvalues q of the n wireless charging transmitting coils at a set period within a first time period from T0 to T1 n , and obtaining the first eigenvalue Q1 with reference to formula (I):

[0210] Q1 = [(q1 + q 2+ q 3+...+ q n ) - (q min + q max )] / (n - 2) (I)

[0211] Wherein, the q min is the minimum value among the eigenvalues q of the n wireless charging transmitting coils n ; the q max is the maximum value among the eigenvalues q of the n wireless charging transmitting coils n ; the n is a positive integer greater than or equal to 3; determine whether the first eigenvalue 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 the second eigenvalue Q2 of the wireless charging transmitting coil at the T2 moment; the T2 moment is any moment within the first time period other than T0 to T1; T x0 to T x1 The second time period is any time period within the first time period other than T0 to T1; store the second eigenvalue Q2 in the wireless charging system for retrieval when used next time.

[0212] In one embodiment, the method further includes: determining whether the first characteristic value Q1 is greater than or equal to a second set value, otherwise, obtaining a third characteristic value Q3 of the wireless charging transmitting coil at time T3, and storing it in the wireless charging system for retrieval the next time it is used; the time T3 is any time within the first time period other than T0 to T1; the first set value is greater than the second set value.

[0213] In one of the embodiments, the method further includes: determining whether the fifth characteristic value Q5 is less than or equal to the third characteristic value Q3 or the second set value, and if so, controlling an alarm indicator light or a buzzer in the wireless charging system to light up or sound.

[0214] In one of the embodiments, the method further includes: calculating a first ASM communication demodulation width parameter and / or a first FSK communication modulation depth parameter based on a distance D1 between the wireless charging transmitting coil and the relay coil, and storing them in the wireless charging system for retrieval the next time they are used.

[0215] Based on the above content, the present application also provides a wireless charger.

[0216] 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.

[0217] In addition, the present application also provides a computer storage medium.

[0218] 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.

[0219] In the above content, at least in some embodiments, the purpose of the present invention is to overcome or improve at least one disadvantage of the prior art, or to provide a useful alternative. The collection of overview embodiments provided is to predict potential patent claims based on the selection of technical features disclosed in the following "Detailed Description", and these collections of overview embodiments are not intended to limit the scope of the claims that can be expanded in any way. DETAILED DESCRIPTION

[0220] In this patent document, the various embodiments discussed below and used to describe the principles or methods of the present disclosure are for illustration 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 said 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 description made herein.

[0221] In addition, the "first", "second", etc. limitations described in this application do not represent specific quantities and orders, but are only used for name differentiation.

[0222] An adaptive control method for a long-distance wireless charging system based on a relay coil, the method includes: setting the input voltage of the wireless charging transmitting coil as a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil as a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil as a first duty cycle, and continuously collecting the characteristic values q of n wireless charging transmitting coils at set intervals within a first time period from T0 to T1 n , and obtaining a first characteristic value Q1 with reference to formula (1):

[0223] Q = [(q1 + q 2+ q 3+...+ q n ) - (q min + q max )] / (n - 2) (1)

[0224] Wherein,

[0225] q min is the minimum value among the characteristic values q of n wireless charging transmitting coils n .

[0226] q max is the maximum value among the characteristic values q of n wireless charging transmitting coils n .

[0227] n is a positive integer greater than or equal to 3.

[0228] Judge whether the first characteristic value Q1 is less than or equal to a first set value. If so, it is determined that there is a relay coil in the wireless charging system, and a second characteristic value Q2 of the wireless charging transmitting coil is obtained at time T2.

[0229] Time T2 is any time within a time period other than the first time period from T0 to T1.

[0230] Set the transmission frequency of the wireless charging transmitting coil to the second transmission frequency. x0 To T x1 The average characteristic value q of the wireless charging transmitting coil is obtained in the second time period x .

[0231] T x0 To T x1 The second time period is any time period other than the first time period from T0 to T1.

[0232] The second transmission frequency is greater than the first transmission frequency.

[0233] Refer to formula (2) to obtain the distance D1 between the wireless charging transmitting coil and the relay coil:

[0234] D = b × e ax (two)

[0235] Among them, a and b are constants, and the value of x is the average eigenvalue q x The value of .

[0236] According to the distance D1 between the wireless charging transmitting coil and the relay coil, a first PING power or a first PING voltage is calculated.

[0237] 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.

[0238] The distance D1, the first PING power and / or the first PING voltage, and the second characteristic value Q2 are recorded and set as a first mapping data set.

[0239] In one embodiment, 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 the second set value, 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 T3. The third characteristic value Q3 is recorded and set as the second mapping data group. Time T3 is any time in the first time period other than T0 to T1. The first set value is greater than the second set value.

[0240] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes: determining whether a first eigenvalue Q1 is greater than or equal to a second set value; 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 T3. Recording and setting the third eigenvalue Q3 into a first mapping data group. T3 is any moment within a first time period other than T0 to T1. The first set value is greater than the second set value.

[0241] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes: determining whether a first eigenvalue Q1 is greater than or equal to a second set value; 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 T3. Recording and setting the third eigenvalue Q3 as a second mapping data group, and recording and setting the third eigenvalue Q3 into a first mapping data group. T3 is any moment within a first time period other than T0 to T1. The first set value is greater than the second set value.

[0242] In one embodiment, the method further includes: setting the transmission power of the wireless charging transmitting coil as a first PING power, or setting the input voltage of the wireless charging transmitting coil as a first PING voltage, and determining whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end; if not, adjusting the transmission power of the wireless charging transmitting coil to P1 with reference to formula (III), or adjusting the input voltage of the wireless charging transmitting coil to V1 with reference to formula (IV):

[0243] P i =P ping +△P×m (III)

[0244] V i =V ping +△V×m. (IV)

[0245] Wherein, 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 is the first PING power, V ping is the first PING voltage, △P is the minimum adjustment change unit of the transmission power of the wireless charging transmitting coil, △V is the minimum adjustment change unit of the input voltage of the wireless charging transmitting coil, m is an integer, i is a positive integer, and it is determined again whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end; if so, correspondingly increasing the weight value of P1 by F P1 or increasing the weight value of V1 by FV1， 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.

[0246] P1 and F P1 Record and set to the third mapping data set, or, V1, and F V1 Record and set to the third mapping data set.

[0247] In one embodiment, refer to formula (5) to obtain the weight value F of P1 P1 , refer to formula (6) to obtain the weight value F of V1 V1 :

[0248]

[0249] 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.

[0250] In one embodiment, the default F P0 The value is 0, the default F V0 The value of is 0.

[0251] 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 third set value; if so, setting m to a negative number and adjusting it in a gradually decreasing direction.

[0252] 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 (III), and obtaining the weight value F of P2 by referring to formula (V). P2 Alternatively, refer to formula (IV) to obtain the input voltage adjustment V2 of the wireless charging transmitting coil, and refer to formula (VI) to obtain the weight value F of V2 V2 .

[0253] P2、F P2 Record and set to the fourth mapping data set, or, V2, F V2 Record and set to the fourth mapping data group.

[0254] Judgement F P2 Is it greater than F? P1 If so, when calling the mapping data, the fourth mapping data group is called before the third mapping data group; otherwise, the third mapping data group is called before the fourth mapping data group.

[0255] In one embodiment, the method further includes: determining F P1 Is it greater than the fourth set value? If so, the third 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.

[0256] 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 third mapping data group and the fourth mapping data group are called.

[0257] In one embodiment, 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.

[0258] In one embodiment, 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.

[0259] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter and 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 ASM communication demodulation width parameter and the first FSK communication modulation depth parameter into a first mapping data group.

[0260] According to the distance D1 between the wireless charging transmitting coil and the relay coil, the first FSK communication modulation depth parameter T1 is calculated, and the weight value of the first FSK communication modulation depth parameter is set to F T1 .

[0261] The information sent by the wireless charging transmitter to the wireless charging receiver is modulated with the first FSK communication modulation depth parameter, and it is determined whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If not, the second FSK communication modulation depth parameter T2 is calculated according to formula (VII):

[0262] T w =T (w-1) +△T×h(VII)

[0263] Among them, T w is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T ( w- 1) T w The basic FSK communication modulation depth parameter, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, and w is a positive integer.

[0264] The information sent by the wireless charging transmitter to the wireless charging receiver is modulated with the second FSK communication modulation depth parameter, and the wireless charging transmitter is checked again to see if it has received the feedback information from the wireless charging receiver. If so, the weight value F of T2 is obtained by referring to formula (VIII). T2 :

[0265]

[0266] 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.

[0267] D1, T1, F T1 , Q2 is recorded and set as the fifth mapping data group.

[0268] D1, T2, F T2 , Q2 is recorded and set as the sixth mapping data group.

[0269] In one embodiment, the default F T0 The value of is 0.

[0270] 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 third set value; if so, setting h to a negative number and adjusting it in a gradually decreasing direction.

[0271] In one embodiment, the method further comprises: T1 and FT2 Set the order of priority between the fifth mapping data group and the sixth mapping data group when they are called according to their sizes.

[0272] In one embodiment, the method further includes: determining whether F T2 is greater than F T1 . If so, when calling the mapping data, the sixth mapping data group is called prior to the fifth mapping data group; otherwise, the fifth mapping data group is called prior to the sixth mapping data group.

[0273] In one embodiment, the method further includes: when it is determined that F T2 is greater than F T1 , determining whether F T2 is greater than a fourth set value. If so, set the sixth mapping data group as the default mapping data group for information modulation in the case where the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be called first.

[0274] In one embodiment, the method further includes: adjusting the order replacement speed of each mapping data group when calling multiple mapping data groups for information modulation by adjusting the value of k T .

[0275] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter G1 according to the distance D1 between the wireless charging transmitting coil and the relay coil, and setting the weight value of the first ASM communication demodulation width parameter G1 as F G1 .

[0276] Demodulating the information received by the wireless charging transmitting end with the first ASM communication demodulation width parameter G1, and determining whether the wireless charging transmitting end has obtained the charging requirement parameter information fed back by the wireless charging receiving end. If not, calculate a second ASM communication demodulation width parameter G2 with reference to formula (IX):

[0277] G s = G (s-1) + △G × u (IX)

[0278] where G s is the actual ASM communication demodulation width parameter of the wireless charging transmitting end, G ( s- 1) is the basic ASM communication demodulation width parameter of G s , △G is the minimum adjustment change unit of the ASM communication demodulation width parameter, u is an integer, and s is a positive integer.

[0279] 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 :

[0280]

[0281] 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 weight value before the change, y is a positive integer.

[0282] D1, G1, F G1 , Q2 is recorded and set as the seventh mapping data group.

[0283] D1, G2, F G2 , Q2 is recorded and set as the eighth mapping data group.

[0284] In one embodiment, the default F G0 The value of is 0.

[0285] 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 third set value; if so, setting u to a negative number and adjusting it in a gradually decreasing direction.

[0286] In one embodiment, the method further comprises: G1 and F G2 The order of size sets the order in which the seventh mapping data group and the eighth mapping data group are called.

[0287] 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.

[0288] 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.

[0289] 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.

[0290] In one of the embodiments, each mapping data group is updated into FLASH via I2C.

[0291] In one of the embodiments, the changed weight value is updated to FLASH via I2C.

[0292] In one embodiment, the fourth characteristic value Q4 of the wireless charging transmitting coil at time T4 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 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end. Time T4 is not within the first time period from T0 to T1, and is located at a time point on the set period, that is, the fourth characteristic value Q4 of the wireless charging transmitting coil is periodically obtained.

[0293] 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.

[0294] In one embodiment, the first input voltage is between 4.5V and 5.5V.

[0295] In one embodiment, the first transmission frequency is between 0.1 Hz and 1 Hz.

[0296] In one embodiment, the second transmit frequency is between 100 kHz and 150 kHz.

[0297] In one embodiment, the first duty cycle is between 10% and 50%.

[0298] In one embodiment, the first duty cycle is 20%.

[0299] In one embodiment, the first set value is between 2.6 and 3.5.

[0300] In one embodiment, the first setting value is 3.

[0301] In one embodiment, the second set value is between 1.8 and 2.5.

[0302] In one embodiment, the second set value is 2.

[0303] In one embodiment, the third setting value is between 7 and 15.

[0304] In one embodiment, the third setting value is between 5 and 12.

[0305] In one embodiment, the value of the third setting value is 11.

[0306] In one embodiment, the value of the third setting value is 9.

[0307] In one embodiment, the fourth setting value is between 3 and 10.

[0308] In one embodiment, the fourth setting value is between 4 and 8.

[0309] In one embodiment, the value of the fourth setting value is 5.

[0310] In one embodiment, the value of the fourth setting value is 7.

[0311] In one embodiment, the value of m is between -11 and 11.

[0312] In one embodiment, the value of m is between -8 and 8.

[0313] In one embodiment, the value of m is between -5 and 5.

[0314] In one embodiment, the value of m is between -7 and 7.

[0315] In one embodiment, the value of h is between -11 and 11.

[0316] In one embodiment, the value of h is between -8 and 8.

[0317] In one embodiment, the value of h is between -5 and 5.

[0318] In one embodiment, the value of h is between -7 and 7.

[0319] In one embodiment, the value of u is between -11 and 11.

[0320] In one embodiment, the value of u is between -8 and 8.

[0321] In one embodiment, the value of u is between -5 and 5.

[0322] In one embodiment, the value of u is between -7 and 7.

[0323] In one embodiment, the characteristic value is a signal characteristic value of a wireless charging transmitting coil voltage.

[0324] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil power.

[0325] In one embodiment, the characteristic value is a signal characteristic value of the wireless charging transmitting coil current.

[0326] 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.

[0327] 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.

[0328] 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.

[0329] The above-mentioned adaptive control method of a long-distance wireless charging system based on a relay coil is provided. In the initial stage, the wireless charging transmitting coil is allowed 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. The characteristic value of the transmitting coil is periodically collected and the first characteristic value Q1 of the transmitting coil is obtained 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 in combination with the second set of operation logic to calculate the distance D1 between the transmitting coil and the relay coil. After knowing the distance, the first PING power or the first PING voltage is calculated by the third set of operation logic. At the same time, the transmission power or input voltage of the transmitting coil is set according to the parameters of the first PING power or the first PING voltage. Under the first PING power or the first PING voltage, the receiving end (such as a mobile phone with a wireless charging function) within the range of the charging system can be powered and send information to the transmitting end. In addition, at the distance D1, in order for the wireless charger to respond quickly when wireless charging is performed again, the present solution also obtains the second characteristic value Q2 at a certain moment after obtaining the first characteristic value Q1, so as to record the characteristic state of the transmitting coil when there is a relay coil and a wireless charging receiving end such as a mobile phone on the relay coil, and records and sets the distance D1, the first PING power and / or the first PING voltage, and the second characteristic value Q2 as the first mapping data group, so as to quickly retrieve the charging parameters in the first mapping data group when wireless charging is performed again, so that the wireless charger can respond quickly and improve the user experience.

[0330] According to the above method, the present application also provides a control method for applying the learning results of the above method.

[0331] An adaptive control method for a long-distance wireless charging system based on a relay coil, the method comprising:

[0332] Set 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. At time T5, obtain the fifth eigenvalue Q5 of the wireless charging transmitting coil, and determine whether the fifth eigenvalue Q5 is less than or equal to the second eigenvalue Q2. If so, determine whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end. If so, adjust 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.

[0333] Time T5 is any time when the wireless charging transmitting coil starts working.

[0334] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0335] The first input voltage is the first input voltage in any one of the above embodiments.

[0336] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0337] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0338] 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.

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

[0340] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0341] 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.

[0342] The third eigenvalue Q3 is the third eigenvalue Q3 in any one of the above embodiments.

[0343] 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 second set value, and if so, the alarm indicator light in the control system turns on or the buzzer sounds.

[0344] The second set value is the second set value in any one of the above embodiments.

[0345] The above-mentioned adaptive control method of a long-distance wireless charging system based on a relay coil 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. Then, by judging whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, it can accurately determine whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil. 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.

[0346] According to the above method, the present application also provides another control method using the learning results of the above method.

[0347] 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 T5, 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.

[0348] Time T5 is any time when the wireless charging transmitting coil starts working.

[0349] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0350] F Pj is the weight value F in any of the above embodiments Pj .

[0351] F Vj is the weight value F in any of the above embodiments Vj .

[0352] The first input voltage is the first input voltage in any one of the above embodiments.

[0353] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0354] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0355] 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 .

[0356] 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.

[0357] 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 (5) Pj , refer to formula (VI) to increase the weight value F Vj .

[0358] 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 .

[0359] 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

[0360] 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.

[0361] 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.

[0362] The first PING power is the first PING power in any one of the above embodiments.

[0363] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0364] 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 (III), or the input voltage of the wireless charging transmitter coil is adjusted to V3 with reference to formula (IV), 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 (V). P3 , or refer to formula (VI) 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.

[0365] P3 and F P3 Record and set to the fifth mapping data group, or, V3, and F V3 Record and set to the fifth mapping data group.

[0366] The first PING power is the first PING power in any one of the above embodiments.

[0367] The first PING voltage is the first PING voltage in any one of the above embodiments.

[0368] 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.

[0369] According to the above method, the present application also provides another control method using the learning results of the above method.

[0370] 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.

[0371] F Tr is the weight value F in any of the above embodiments Tr .

[0372] The FSK communication modulation depth parameter is the FSK communication modulation depth parameter in any one of the above embodiments.

[0373] 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 .

[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, increase the weight value F according to formula (eight) Tr .

[0375] 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 .

[0376] In one embodiment, the method further includes: referring to formula (eight), increasing the weight value F Tr , and at the same time the maximum weight value F Tmax Modify and set to

[0377] 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.

[0378] 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.

[0379] 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 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 eigenvalue Q5 of the wireless charging transmitting coil at time T5, 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 the charging request signal sent by the wireless charging receiving end.

[0380] Time T5 is any time when the wireless charging transmitting coil starts working.

[0381] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0382] The first input voltage is the first input voltage in any one of the above embodiments.

[0383] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0384] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0385] 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.

[0386] According to the above method, the present application also provides another control method using the learning results of the above method.

[0387] A long-distance adaptive ASM communication demodulation wireless charging self-learning control method, the method includes: judging whether the wireless charging transmitting end has received a signal sent by the wireless charging receiving end for feeding back charging demand parameters, and if so, 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.

[0388] F Gy is the weight value F in any of the above embodiments Gy .

[0389] The ASM communication demodulation width parameter is the ASM communication demodulation width parameter in any one of the above embodiments.

[0390] The mapping data group is the mapping data group in any one of the above embodiments.

[0391] 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 .

[0392] 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 .

[0393] 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 .

[0394] 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

[0395] 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.

[0396] 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.

[0397] 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 requirement 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 T5, 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 requirement parameters.

[0398] Time T5 is any time when the wireless charging transmitting coil starts working.

[0399] The second eigenvalue Q2 is the second eigenvalue Q2 in any one of the above embodiments.

[0400] The first input voltage is the first input voltage in any one of the above embodiments.

[0401] The first transmitting frequency is the first transmitting frequency in any one of the above embodiments.

[0402] The first duty cycle is the first duty cycle in any one of the above embodiments.

[0403] In one of the embodiments, each changed mapping data group is updated into FLASH via I2C.

[0404] In one of the embodiments, each changed weight value is updated to FLASH via I2C.

[0405] The above-mentioned wireless charging self-learning control method of long-distance adaptive ASM communication demodulation is

[0406] 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.

[0407] According to the above content, the adaptive working control method of this application during the user use stage is as follows:

[0408] An adaptive control method for a long-distance wireless charging system based on a relay coil, 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 characteristic value Q5 of the wireless charging transmitting coil at time T5, and judging whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, if so, 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, and judging whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end, if so, adjusting the transmitting power of the wireless charging transmitting coil according to the requirements of the wireless charging receiving end to charge the wireless charging receiving end. Time T5 is any time when the wireless charging transmitting coil starts to work. The second characteristic value Q2 is a characteristic value of the wireless charging transmitting coil stored in the wireless charging system when there is a relay coil in the wireless charging system and the distance between the relay coil and the wireless charging transmitting coil is the distance D1. The first PING power and / or the first PING voltage are PING parameters stored in the wireless charging system when there is a relay coil in the wireless charging system and the distance between the relay coil and the wireless charging transmitting coil is the distance D1. The characteristic value 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.

[0409] In one embodiment, before determining whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, the method further includes obtaining a distance D1 between the relay coil and the wireless charging transmitting coil. The method includes: setting the transmitting frequency of the wireless charging transmitting coil to the second transmitting frequency, at T 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:

[0410] D1=b×e ax (two)

[0411] Among them, a and b are constants, and the value of x is the average eigenvalue q x The value of .

[0412] In one of the embodiments, the method further includes: retrieving a second characteristic value Q2 , a first PING power and / or a first PING voltage corresponding to the distance D1 according to the distance D1 .

[0413] In one embodiment, the method further includes: calculating a first PING power or a first PING voltage according to the distance D1 between the wireless charging transmitting coil and the relay coil, and storing same in the wireless charging system for retrieval when used next time.

[0414] In one embodiment, the method further includes a method for obtaining a second eigenvalue Q2, the method including: in the same environment as when obtaining the fifth eigenvalue Q5, continuously collecting the eigenvalues q of n wireless charging transmitting coils at set intervals within a first time period from T0 to T1 n , and obtaining a first eigenvalue Q1 with reference to formula (1):

[0415] Q1 = [(q1 + q 2+ q 3+...+ q n ) - (q min + q max )] / (n - 2) (1)

[0416] wherein,

[0417] q min is the minimum value among the eigenvalues q of n wireless charging transmitting coils n .

[0418] q max is the maximum value among the eigenvalues q of n wireless charging transmitting coils n .

[0419] n is a positive integer greater than or equal to 3.

[0420] Determine whether the first eigenvalue 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 eigenvalue Q2 of the wireless charging transmitting coil at time T2.

[0421] Time T2 is any time within a second time period other than the first time period from T0 to T1.

[0422] T x0 to T x1 The second time period is any time period within a second time period other than the first time period from T0 to T1.

[0423] Store the second eigenvalue Q2 in the wireless charging system for retrieval when used next time.

[0424] In one embodiment, the method further includes: determining whether the first eigenvalue Q1 is greater than or equal to a second set value. Otherwise, obtain a third eigenvalue Q3 of the wireless charging transmitting coil at time T3, and store same in the wireless charging system for retrieval when used next time.

[0425] Time T3 is any time in the first time period other than T0 to T1.

[0426] The first setting value is greater than the second setting value.

[0427] In one embodiment, the method further includes: determining whether the fifth characteristic value Q5 is less than or equal to the third characteristic value Q3 or the second set value, and if so, controlling an alarm indicator light or a buzzer in the wireless charging system to light up.

[0428] In one of the embodiments, the method further includes: calculating a first ASM communication demodulation width parameter and / or a first FSK communication modulation depth parameter based on a distance D1 between the wireless charging transmitting coil and the relay coil, and storing them in the wireless charging system for retrieval the next time they are used.

[0429] In addition, based on the above content, the present application also provides a wireless charger.

[0430] 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. The wireless charger can be easily upgraded and modified.

[0431] In addition, the present application also provides a computer storage medium.

[0432] A computer storage medium stores a computer program, and when the program is executed by a processor, the method in any one of the above embodiments is implemented. The wireless charger can be easily upgraded and modified.

[0433] 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. An adaptive control method for a long-distance wireless charging system based on a relay coil, characterized in that: The method comprises: The input voltage of the wireless charging transmitting coil is set to the first input voltage, the transmitting frequency is set to the first transmitting frequency, the duty cycle of the first transmitting frequency is set to the first duty cycle, the fifth characteristic value Q5 of the wireless charging transmitting coil is obtained at time T5, and it is determined whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2. If so, 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; The T5 moment is any moment when the wireless charging transmitting coil starts working; The second characteristic value Q2 is stored in the wireless charging system, and is a characteristic value of the wireless charging transmitting coil when there is a relay coil in the wireless charging system and the distance between the relay coil and the wireless charging transmitting coil is the distance D1; The first PING power or the first PING voltage is a PING parameter stored in the wireless charging system when a relay coil is present in the wireless charging system and the distance between the relay coil and the wireless charging transmitting coil is a distance D1; The characteristic value 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; The method also includes a method for obtaining the second characteristic value Q2, the method including: setting the input voltage of the wireless charging transmitting coil to the first input voltage, the transmitting frequency to the first transmitting frequency, the duty cycle of the first transmitting frequency to the first duty cycle, and continuously collecting the characteristic values ​​of n wireless charging transmitting coils according to a set period in a first time period from T0 to T1 q n , and refer to formula (1) to obtain the first eigenvalue Q1: Q1 =[(q 1 +q 2+ q 3+...+ q n )- (q min +q max )] / (n-2) (one) in, Said q min is the characteristic value of n wireless charging transmitting coils q n The minimum value in ; Said q max is the characteristic value of n wireless charging transmitting coils q n The maximum value in ; Said n is a positive integer greater than or equal to 3; 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 the second characteristic value Q2 of the wireless charging transmitting coil at time T2; The time T2 is any time in the first time period other than T0 to T1; storing the second characteristic value Q2 in the wireless charging system for retrieval at next use; Before determining whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2, the method further includes obtaining a distance D1 between the relay coil and the wireless charging transmitting coil, the method comprising: The transmitting frequency of the wireless charging transmitting coil is set to the second transmitting frequency. x0 To T x1 The average characteristic value of the wireless charging transmitting coil is obtained in the second time period q x ; The second transmitting frequency is greater than the first transmitting frequency; T x0 To T x1 The second time period is any time period other than the first time period from T0 to T1; Refer to formula (2) to obtain the distance D1 between the wireless charging transmitting coil and the relay coil: D1 = b × e ax (two) Among them, a and b is a constant, x The value of the average eigenvalue is q x The value of .

2. The adaptive control method of the long-distance wireless charging system based on the relay coil according to claim 1, characterized in that: The method further comprises: The second characteristic value Q2 , the first PING power and / or the first PING voltage corresponding to the distance D1 are retrieved according to the distance D1 .

3. The adaptive control method of the long-distance wireless charging system based on the relay coil according to claim 1, characterized in that: The method further comprises: 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, and is stored in the wireless charging system for retrieval at the next use.

4. The adaptive control method of the long-distance wireless charging system based on the relay coil according to claim 1, characterized in that: The method further comprises: Determine whether the first characteristic value Q1 is greater than or equal to a second set value. If not, obtain a third characteristic value Q3 of the wireless charging transmitting coil at time T3 and store it in the wireless charging system for retrieval at the next use. The time T3 is any time in the first time period other than T0 to T1; The first setting value is greater than the second setting value.

5. The adaptive control method of the long-distance wireless charging system based on the relay coil according to claim 4 is characterized in that: The method further comprises: It is determined whether the fifth characteristic value Q5 is less than or equal to the third characteristic value Q3 or the second set value. If so, an alarm indicator light or a buzzer in the wireless charging system is controlled to light up or sound.

6. The adaptive control method of the long-distance wireless charging system based on the relay coil according to claim 1, characterized in that: The method further includes: calculating a first ASM communication demodulation width parameter and / or a first FSK communication modulation depth parameter according to a distance D1 between the wireless charging transmitting coil and the relay coil, and storing the parameters in the wireless charging system for retrieval at the next use.

7. The adaptive control method of the long-distance wireless charging system based on the relay coil according to claim 1, characterized in that: The first input voltage is between 4.5V and 5.5V; The first transmitting frequency is between 0.1 Hz and 1 Hz; The second transmitting frequency is between 100 kHz and 150 kHz; The first duty cycle is 20%.

8. A wireless charger, comprising a computer storage medium, wherein a computer program is stored on the computer storage medium, characterized in that: When the program is executed by a processor, the control method described in any one of claims 1 to 7 is implemented.

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