Self-learning control method for a long-distance wireless charging system based on a relay coil and a wireless charger

Abstract

The present invention provides a self-learning control method for a long-distance wireless charging system based on a relay coil and a wireless charger. By obtaining the characteristic value of the transmitting coil at a certain moment and comparing it with the characteristic value of the transmitting coil when there is a relay coil and a receiving end on the relay coil, the current state in the wireless charging system can be quickly predicted, and then the mapping data group where the weight value F Pj or F Vj is located is called in order from largest to smallest according to the value of the weight to configure the operating parameters of the transmitting coil, and it is determined whether the transmitting end receives a charging request signal sent by the receiving end. If so, the transmitting power of the transmitting coil is adjusted according to the requirements of the receiving end to charge the wireless charging receiving end. With such a setting, in the case of long-distance charging, when the wireless charging system applying this control method performs wireless charging again, it can respond quickly, enter the wireless charging program to output energy more quickly, and improve the charging response speed and user experience.

Description

Technical Field

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

[0002] Wireless charging is gaining popularity among home consumers because it enables wireless communication between the charging power source and the power receiving device, eliminating the clutter of numerous power cords on desktops. However, currently available wireless charging systems are all based on Qi, which has a charging distance of only 5mm-8mm. Most desktops are typically 15mm-30mm thick. Therefore, existing wireless charging solutions require drilling holes under the desktop to embed the wireless charger. This not only disrupts the structure and aesthetics of the desktop, but also consumes labor and time. Furthermore, the need to drill holes in the desktop to install a wireless charger significantly hinders its widespread adoption in both office and home settings. Furthermore, different users may have different wireless charging receiver devices, and even the same user may have completely different receiver devices, such as mobile phones. During wireless charging, different users have different placement habits and use different household devices with varying thicknesses or structures. Even different phones from the same user may have different charging parameters, and existing wireless charging systems are unable to quickly respond to these variations. Summary of the Invention

[0003] Based on the above, a self-learning control method for a long-distance adaptive wireless charging system and a wireless charger using the method are provided, which can adapt to a larger charging distance, adapt to a variety of desktop thickness ranges, and respond quickly during wireless charging.

[0004] A control method for a long-distance adaptive wireless charging system, the method comprising: setting the input voltage of the wireless charging transmitting coil to a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to a first duty cycle, and continuously collecting n characteristic values q of the wireless charging transmitting coil according to a set period in a first time period from T0 to T1. n , and refer to formula (1) to obtain the first eigenvalue Q1:

[0005] Q=[(q1+q 2+ q 3+ ...+q n )-(q min +q max )] / (n-2) (一)

[0006] Among them, the q min is the characteristic value q of n wireless charging transmitting coils n The minimum value in q max is the characteristic value q of n wireless charging transmitting coils n The maximum value in the range; n is a positive integer greater than or equal to 3; it is determined whether the first characteristic value Q1 is less than or equal to a first set value. If so, it is determined that a relay coil exists in the wireless charging system, and the second characteristic value Q2 of the wireless charging transmitting coil is obtained at time T2; the time T2 is any time within the first time period other than T0 to T1; the transmitting frequency of the wireless charging transmitting coil is set to a second transmitting frequency, and 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 ;T x0 To T x1 The second time period is any time period other than the first time period from T0 to T1; the second transmission frequency is greater than the first transmission frequency; refer to formula (2) to obtain the distance D1 between the wireless charging transmitting coil and the relay coil:

[0007] D=b×e ax (two)

[0008] Where a and b are constants, and the value of x is the average eigenvalue q x value; calculating a first PING power or a first PING voltage based on the distance D1 between the wireless charging transmitting coil and the relay coil; setting the transmitting power of the wireless charging transmitting coil to the first PING power, or setting the input voltage of the wireless charging transmitting coil to the first PING voltage, and determining whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end; if not, adjusting the transmitting power of the wireless charging transmitting coil to P1 with reference to formula (3), or adjusting the input voltage of the wireless charging transmitting coil to V1 with reference to formula (4):

[0009] P i =P ping +△P×m (three)

[0010] V i =V ping +△V×m; (IV)

[0011] Among them, P i is the actual power value of the wireless charging transmitting coil, V i is the actual input voltage value of the wireless charging transmitting coil, P pingis 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 the charging request signal sent by the wireless charging receiving end. If so, the weight value of P1 is correspondingly increased to F P1 , or the weight value of V1 is increased to 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; the D1, P1, F P1 , Q2 are recorded and set as the first mapping data group, or the D1, V1, F V1 , Q2 are recorded and set as the first mapping data group.

[0012] In one embodiment, the weight value F of P1 is obtained with reference to formula (five) P1 , and the weight value F of V1 is obtained with reference to formula (six) V1 :

[0013]

[0014]

[0015] Among them, 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj . j is a positive integer. F[[ID=5e1]] P(j-1) refers to the weight value before the change of F Pj , F V(j-1) refers to the weight value before the change of F Vj .

[0016] In one embodiment, the value of F P0 is defaulted to 0, and the value of F V0 is defaulted to 0.

[0017] In one embodiment, the method further includes: setting m as a positive number and adjusting it in the gradually increasing direction, and determining whether m is greater than or equal to a second set value. If so, setting m as a negative number and adjusting it in the gradually decreasing direction.

[0018] 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 with reference to Equation (III), and obtaining the weight value F of P2 with reference to Equation (V). P2 Or, obtaining the input voltage adjustment V2 of the wireless charging transmitting coil with reference to Equation (IV), and obtaining the weight value F of V2 with reference to Equation (VI). V2 ; recording and setting the P2 and F P2 into a second mapping data group, or recording and setting the V2 and F V2 into a second mapping data group; determining whether the F P2 is greater than the F P1 . If so, when calling the mapping data, the second mapping data group is called prior to the first mapping data group; otherwise, the first mapping data group is called prior to the second mapping data group.

[0019] In one embodiment, the method further includes: determining whether the F P1 is greater than a third set value. If so, setting the first mapping data group 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.

[0020] In one embodiment, the method further includes: adjusting and setting the value of k p or k v to adjust the replacement speed of the priority order when the first mapping data group and the second mapping data group are called.

[0021] In one embodiment, set the transmission power of the wireless charging transmitting coil to the first PING power, or set the input voltage of the wireless charging transmitting coil to the first PING voltage, and determine whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, 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; record and set the distance D1, the first PING power, and / or the first PING voltage, and the second eigenvalue Q2 as a third mapping data group, or record and set the first PING power and / or the first PING voltage into the first mapping data group.

[0022] 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 eigenvalue Q1 is greater than or equal to a fourth set value. If so, continue to obtain the distance D1 between the wireless charging transmitting coil and the relay coil. Otherwise, obtain the third eigenvalue Q3 of the wireless charging transmitting coil at the moment T3; record and set the third eigenvalue Q3 as a fourth mapping data group; the moment T3 is any moment within the first time period from non-T0 to T1; the first set value is greater than the fourth set value.

[0023] 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 eigenvalue Q1 is greater than or equal to a fourth set value. If so, continue to obtain the distance D1 between the wireless charging transmitting coil and the relay coil. Otherwise, obtain the third eigenvalue Q3 of the wireless charging transmitting coil at the moment T3; record and set the third eigenvalue Q3 into the first mapping data group; the moment T3 is any moment within the first time period from non-T0 to T1; the first set value is greater than the fourth set value.

[0024] 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 eigenvalue Q1 is greater than or equal to a fourth set value. If so, continue to obtain the distance D1 between the wireless charging transmitting coil and the relay coil. Otherwise, obtain the third eigenvalue Q3 of the wireless charging transmitting coil at the moment T3; record and set the third eigenvalue Q3 as a fourth mapping data group and record and set the third eigenvalue Q3 into the first mapping data group; the moment T3 is any moment within the first time period from non-T0 to T1; the first set value is greater than the fourth set value.

[0025] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter according to the distance D1 between the wireless charging transmitting coil and the relay coil; recording and setting the first ASM communication demodulation width parameter into the first mapping data group.

[0026] In one embodiment, the method further includes: calculating a first FSK communication modulation depth parameter according to the distance D1 between the wireless charging transmitting coil and the relay coil; recording and setting the first FSK communication modulation depth parameter into the first mapping data group.

[0027] 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 the distance D1 between the wireless charging transmitting coil and the relay coil; recording and setting the first ASM communication demodulation width parameter and the first FSK communication modulation depth parameter into the first mapping data group.

[0028] In one embodiment, the method further includes: calculating a first FSK communication modulation depth parameter T1 according to the distance D1 between the wireless charging transmitting coil and the relay coil, and setting the weight value of the first FSK communication modulation depth parameter to F T1 ; modulating the information sent from the wireless charging transmitter to the wireless charging receiver with the first FSK communication modulation depth parameter, and determining whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If not, calculate a second FSK communication modulation depth parameter T2 with reference to formula (VII):

[0029] T w = T (w-1) + △T × h (VII)

[0030] where, T w is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T (w-1) is the basic FSK communication modulation depth parameter of T w , △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, w is a positive integer; modulating the information sent from the wireless charging transmitter to the wireless charging receiver with the second FSK communication modulation depth parameter, and determining again whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If so, obtain the weight value F of the T2 with reference to formula (VIII) T2 :

[0031]

[0032] where, k Tis the magnification factor, L T is a constant, F Tr and F T(r-1) are weight values and F T(r-1) is F Tr is the base weight value of F, that is, F Tr is the weight value before change, r is a positive integer; the D1, T1, F T1 , Q2 are recorded and set as the fifth mapping data group; the D1, T2, F T2 , Q2 are recorded and set as the sixth mapping data group.

[0033] In one embodiment, the default F T0 value is 0.

[0034] In one embodiment, the method further includes: setting the h to be a positive number, and adjusting it in the gradually increasing direction, and determining whether the h is greater than or equal to a third set value. If so, setting the h to be a negative number and adjusting it in the gradually decreasing direction.

[0035] In one embodiment, the method further includes: according to the F T1 and the F T2 to set the order of invocation of the fifth mapping data group and the sixth mapping data group.

[0036] In one embodiment, the method further includes: determining whether the F T2 is greater than the F T1 . If so, when invoking the mapping data, the sixth mapping data group is invoked prior to the fifth mapping data group; otherwise, the fifth mapping data group is invoked prior to the sixth mapping data group.

[0037] In one embodiment, the method further includes: when it is determined that the F T2 is greater than the F T1 , determining whether the F T2 is greater than a third set value. If so, setting the sixth mapping data group as the default mapping data group for information modulation of the wireless charging system when the distance between the wireless charging transmitting coil and the relay coil is D1, so as to be invoked first.

[0038] In one embodiment, the method further includes: adjusting the value of the k T to adjust the replacement speed of the order of invocation of each mapping data group when adjusting multiple mapping data groups for information modulation.

[0039] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter G1 according to a distance D1 between the wireless charging transmitting coil and the relay coil, and setting a weight value of the first ASM communication demodulation width parameter G1 as F G1 ; demodulating 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 obtains charging requirement parameter information fed back by the wireless charging receiving end. If not, calculating a second ASM communication demodulation width parameter G2 with reference to formula (IX):

[0040] G s =G (s-1) +△G×u (IX)

[0041] wherein, G s is an actual ASM communication demodulation width parameter of the wireless charging transmitting end, G (s-1) is a basic ASM communication demodulation width parameter of G s , △G is a minimum adjustment change unit of the ASM communication demodulation width parameter, u is an integer, and s is a positive integer; demodulating information received by the wireless charging transmitting end with the second ASM communication demodulation width parameter G2, and determining again whether the wireless charging transmitting end obtains the charging requirement parameter information fed back by the wireless charging receiving end. If so, obtaining a weight value F of the G2 with reference to formula (X): G2 :[[]]

[0042]

[0043] wherein, k G is a magnification factor, L G is a constant, F Gy and F G(y-1) are weight values and F G(y-1) is a basic weight value of F Gy , that is, the weight value before change of F Gy , and y is a positive integer; recording and setting the D1, G1, F G1 , and Q2 as a seventh mapping data group; recording and setting the D1, G2, F G2 , and Q2 as an eighth mapping data group.

[0044] In one embodiment, it is default that the value of F G0 is 0.

[0045] In one embodiment, the method further includes: setting the u as a positive number, and adjusting it in a gradually increasing direction, and determining whether the u is greater than or equal to a third set value. If so, setting the u as a negative number, and adjusting it in a gradually decreasing direction.

[0046] In one embodiment, the method further includes: according to the F G1 and the F G2 set the order of calling the seventh mapping data group and the eighth mapping data group according to their size order.

[0047] In one embodiment, the method further includes: determining whether the F G2 is greater than the F G1 . If so, when calling the mapping data, the eighth mapping data group is called prior to the seventh mapping data group; otherwise, the seventh mapping data group is called prior to the eighth mapping data group.

[0048] In one embodiment, the method further includes: when it is determined that the F G2 is greater than the F G1 , determining whether the F G2 is greater than a third set value. If so, set the eighth mapping data group as the default mapping data group for information demodulation 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.

[0049] In one embodiment, the method further includes: by adjusting the value of the k G to adjust the replacement speed of the order of calling each mapping data group when adjusting multiple mapping data groups for information demodulation.

[0050] In one embodiment, update each mapping data group to the FLASH through I2C.

[0051] In one embodiment, update the changed weight value to the FLASH through I2C.

[0052] In one embodiment, obtain the fourth eigenvalue Q4 of the wireless charging transmitting coil at time T4, and determine whether the fourth eigenvalue Q4 is less than or equal to the second eigenvalue Q2. If so, determine whether the wireless charging transmitting end has received a 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end; the time T4 is within the first time period other than T0 to T1 and is a time point on the set period. That is, periodically obtain the fourth eigenvalue Q4 of the wireless charging transmitting coil.

[0053] In one embodiment, before determining whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, the method further includes: determining whether the fourth eigenvalue Q4 is less than or equal to the third eigenvalue Q3, and if so, turning on the alarm indicator light or sounding the buzzer in the control system.

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

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

[0056] In one embodiment, the second transmission frequency is between 100kHz and 150kHz.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[0074] In one embodiment, the value of m is between -7 and 7.

[0075] In one embodiment, the value of h is between -11 and 11.

[0076] In one embodiment, the value of h is between -8 and 8.

[0077] In one embodiment, the value of h is between -5 and 5.

[0078] In one embodiment, the value of h is between -7 and 7.

[0079] In one embodiment, the value of u is between -11 and 11.

[0080] In one embodiment, the value of u is between -8 and 8.

[0081] In one embodiment, the value of u is between -5 and 5.

[0082] In one embodiment, the value of u is between -7 and 7.

[0083] In one embodiment, the eigenvalue is the signal eigenvalue of the voltage of the wireless charging transmitting coil.

[0084] In one embodiment, the eigenvalue is the signal eigenvalue of the power of the wireless charging transmitting coil.

[0085] In one embodiment, the eigenvalue is the signal eigenvalue of the current of the wireless charging transmitting coil.

[0086] The self-learning control method of a long-distance adaptive wireless charging system provided above allows the wireless charging transmitting coil to operate with a very weak charge for a short period in an environment of a first input voltage, a first transmission frequency, and a first duty cycle during the initial stage. By periodically collecting the characteristic values of the transmitting coil and obtaining the first characteristic value Q1 of the transmitting coil according to a specific logical relationship, it can be determined whether there is a relay coil in the system based on the first characteristic value Q1. If there is a relay coil, the distance D1 between the transmitting coil and the relay coil is calculated through an innovative fitting formula in combination with a second set of operation logics. After knowing the distance, the first PING power or the first PING voltage is calculated through a third set of operation logics. At the same time, the transmitting power or the 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 wireless charging function) within the charging system range can be powered on and send information to the transmitting end. If the receiving end is not powered on under the environment of the first PING power or the first PING voltage, it tries to increase the PING power to P1 or increase the PING voltage to V1. If the receiving end is powered on under the environment of P1 power or V1 voltage, it is recorded that the environment of P1 power or V1 voltage is more suitable at this time. In order to enable the receiving end to respond quickly when charging in this wireless charging system again, the weight value of the more suitable environment of P1 power or V1 voltage is increased, and the D1, P1, F P1 、Q2 are recorded and set as the first mapping data group. Or, the D1, V1, F V1 、Q2 are recorded and set as the first mapping data group. To be preferentially retrieved and applied to achieve the purpose of rapid response of wireless charging. So that when wireless charging is carried out again, the charging parameters in the first mapping data group can be quickly retrieved, enabling the wireless charger to respond quickly and improving the user experience.

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

[0088] A self-learning control method of a long-distance adaptive wireless charging system, the method includes: setting the input voltage of the wireless charging transmitting coil as the first input voltage, the transmission frequency as the first transmission frequency, the duty cycle of the first transmission frequency as 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. If so, according to the weight value F Pj or F VjCall the mapping data group where the weight value is located in descending order of the numerical value to configure the operating parameters of the wireless charging transmitting coil, and determine whether the wireless charging transmitting end has received 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end;

[0089] The T5 moment is any moment when the wireless charging transmitting coil starts to work;

[0090] The second eigenvalue Q2 is the second eigenvalue Q2 in any of the above embodiments;

[0091] The F Pj is the weight value F in any of the above embodiments Pj ;

[0092] The F Vj is the weight value F in any of the above embodiments Vj ; s

[0093] The first input voltage is the first input voltage in any of the above embodiments;

[0094] The first transmission frequency is the first transmission frequency in any of the above embodiments;

[0095] The first duty ratio is the first duty ratio in any of the above embodiments.

[0096] 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 in the mapping data group called at this time Pj or F Vj ;

[0097] 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 in the mapping data group called at this time Pj or F Vj , and at the same time decrease the weight value in the previous mapping data group in the call order.

[0098] 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 with reference to formula (five) Pj , increase the weight value F with reference to formula (six) Vj ;

[0099] 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 whether the weight value F Pj or F Vj in the currently invoked mapping data group is the maximum weight value F Pmax or F Vmax . If not, increasing the weight value F Pj or F Vj in the currently invoked mapping data group, and at the same time, decreasing the maximum weight value F Pmax or the maximum weight value F Vmax .

[0100] In one embodiment, the method further includes: increasing the weight value F Pj with reference to formula (five), increasing the weight value F Vj with reference to formula (six), and at the same time modifying and setting the maximum weight value F Pmax to Modifying and setting the maximum weight value F Vmax to where k P is a magnification factor, L P is a constant, △P is the minimum adjustment change unit of the transmission power of the wireless charging transmitter coil, and m is an integer.

[0101] In one embodiment, the method further includes: when the wireless charging transmitter still has not received the charging request signal sent by the wireless charging receiver after all the mapping data groups have been invoked, setting the transmission power of the wireless charging transmitter coil to the first PING power, or setting the input voltage of the wireless charging transmitter coil to the first PING voltage; the first PING power is the first PING power in any of the above embodiments; the first PING voltage is the first PING voltage in any of the above embodiments.

[0102] In one embodiment, when all of the mapping data groups have been called and the wireless power transmitting end still has not received a charging request signal sent by the wireless power receiving end, set the transmitting power of the wireless power transmitting coil to the first PING power, or set the input voltage of the wireless power transmitting coil to the first PING voltage, and determine whether the wireless power transmitting end has received a charging request signal sent by the wireless power receiving end. If not, adjust the transmitting power of the wireless power transmitting coil to P3 with reference to formula (3), or adjust the input voltage of the wireless power transmitting coil to V3 with reference to formula (4), and determine again whether the wireless power transmitting end has received a charging request signal sent by the wireless power receiving end. If so, obtain the weight value F of P3 with reference to formula (5). P3 Or obtain the weight value F of V3 with reference to formula (6). V3 And adjust the transmitting power of the wireless power transmitting coil to charge the wireless power receiving end according to the requirements of the wireless power receiving end; record and set the P3 and the F P3 into the fifth mapping data group, or record and set the V3 and the F V3 into the fifth mapping data group; the first PING power is the first PING power in any of the above embodiments; the first PING voltage is the first PING voltage in any of the above embodiments.

[0103] The self-learning control method of the long-distance adaptive wireless charging system provided above compares the characteristic value (the fifth characteristic value Q5) of the transmitting coil at a certain moment with the characteristic value (the second characteristic value Q2) of the transmitting coil when there is a relay coil and a wireless power receiving end exists 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, according to the weight value F Pj or F Vj in descending order of the numerical value, call the mapping data group where the weight value is located in sequence to directly configure the operating parameters of the wireless power transmitting coil, so as to quickly adapt to the connection requirements of common receiving ends. For the common receiving ends used by users, this method can make the common receiving ends get power more quickly and send a charging request signal to the transmitting end, improving the response speed of the wireless charging system to common receiving ends. That is, when the wireless charging system applying this control method performs wireless charging again, it can quickly respond and enter the wireless charging program to output energy more quickly, improving the user experience.

[0104] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0105] A control method for a long-distance adaptive wireless charging system, the method comprising: setting the input voltage of the wireless charging transmitting coil to a first input voltage, 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 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; if so, determining whether the wireless charging transmitting end has received 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; the time T5 is any moment when the wireless charging transmitting coil starts to work; the second characteristic value Q2 is the second characteristic value Q2 in any of the above embodiments; the first input voltage is the first input voltage in any of the above embodiments; the first transmitting frequency is the first transmitting frequency in any of the above embodiments; the first duty cycle is the first duty cycle in any of the above embodiments.

[0106] 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 further comprises: setting the transmitting power of the wireless charging transmitting coil to a first PING power, or setting the input voltage of the wireless charging transmitting coil to a first PING voltage; the first PING power is the first PING power in any of the above embodiments; the first PING voltage is the first PING voltage in any of the above embodiments.

[0107] 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 further comprises: determining whether the fifth characteristic value Q5 is less than or equal to a third characteristic value Q3; if so, turning on an alarm indicator light or sounding a buzzer in the control system; the third characteristic value Q3 is the third characteristic value Q3 in any of the above embodiments.

[0108] 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 further comprises: determining whether the fifth characteristic value Q5 is less than or equal to a fourth set value; if so, turning on an alarm indicator light or sounding a buzzer in the control system; the fourth set value is the fourth set value in any of the above embodiments.

[0109] The control method of a long-distance adaptive wireless charging system provided above can quickly predict whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil by obtaining the eigenvalue (the fifth eigenvalue Q5) of the transmitting coil at a certain moment and comparing it with the eigenvalue (the second eigenvalue Q2) of the transmitting coil when there is a relay coil and a wireless charging 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. With such a setting, when the wireless charging system applying this control method performs wireless charging again, it can respond quickly and enter the wireless charging program to output energy more quickly, improving the user experience.

[0110] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0111] A self-learning control method for wireless charging with long-distance adaptive FSK communication modulation, the method includes: judging whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, if so, then modulating the communication information of the wireless charging transmitting end by sequentially calling the mapping data group where the weight value F Tr is located in descending order of the value of the weight value F, and judging whether the wireless charging transmitting end receives the feedback signal sent by the wireless charging receiving end based on this communication information, if so, then modulating the information sent by the wireless charging transmitting end to the wireless charging receiving end with the FSK communication modulation depth parameter that can currently receive feedback information; the F Tr is the weight value F in any of the above embodiments Tr ; the FSK communication modulation depth parameter is the FSK communication modulation depth parameter in any of the above embodiments; the mapping data group is the mapping data group described in claim 1.

[0112] 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 Tr in the currently called mapping data group.

[0113] 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 Tr with reference to formula (eight).

[0114] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter receives the feedback signal from the wireless charging receiver, determining whether the weight value F in the mapping data group called at this time Tr is the maximum weight value F Tmax , if not, increasing the weight value F in the mapping data group called at this time Tr , and at the same time, decreasing the maximum weight value F Tmax .

[0115] In one embodiment, the method further includes: increasing the weight value F with reference to Equation (VIII) Tr , and at the same time modifying and setting the maximum weight value F Tmax to

[0116] where k T is a magnification factor, L T is a constant, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, and h is an integer.

[0117] In one embodiment, the method further includes: when the wireless charging transmitter still does not receive the feedback signal from the wireless charging receiver after all the mapping data groups are called, reducing or turning off the transmission power of the wireless charging transmitting coil.

[0118] In one embodiment, before determining whether the wireless charging transmitter receives the charging request signal sent by the wireless charging receiver, the method includes: setting the input voltage of the wireless charging transmitting coil to a first input voltage, the transmission frequency to a first transmission frequency, and the duty cycle of the first transmission frequency to a first duty cycle, obtaining a fifth characteristic value Q5 of the wireless charging transmitting coil at time T5, and determining whether the fifth characteristic value Q5 is less than or equal to the second characteristic value Q2. If so, continue to determine whether the wireless charging transmitter receives the charging request signal sent by the wireless charging receiver; the time T5 is any time when the wireless charging transmitting coil starts to work; the second characteristic value Q2 is the second characteristic value Q2 in any of the above embodiments; the first input voltage is the first input voltage in any of the above embodiments; the first transmission frequency is the first transmission frequency in any of the above embodiments; the first duty cycle is the first duty cycle in any of the above embodiments.

[0119] For the wireless charging self-learning control method of long-distance adaptive FSK communication modulation provided above, when the wireless charging transmitter receives the charging request signal sent by the wireless charging receiver, according to the weight value F TrCall the mapping data group where the weight value is located in descending order of the value of Tr to modulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter receives a feedback signal sent by the wireless charging receiver based on the communication information. If so, modulate the information sent from the wireless charging transmitter to the wireless charging receiver using the FSK communication modulation depth parameter for which feedback information can currently be received. Since whether the receiver can perform fast charging (usually 15 watts) or wireless charging with the EPP architecture with the transmitter also depends on whether the receiver and the transmitter can complete the charging protocol (complete authentication or binding) within the specified time. With such settings, according to the above content, the weight value F

[0120] The larger the value, the more the operating parameters in the mapping data group where it is located fit the operating parameters of the user's commonly used receiver, transmitter, and relay to form a wireless charging system. Furthermore, when the user's commonly used receiver needs to perform wireless charging, it can respond quickly in communication, preventing low-power (usually 5 watts) charging due to unsuccessful handshakes, improving the response speed and enhancing the user experience.

[0121] A long-distance adaptive ASM communication demodulation wireless charging self-learning control method, the method includes: determining whether the wireless charging transmitter receives a signal sent by the wireless charging receiver for feedback of charging demand parameters. If so, call the mapping data group where the weight value is located in descending order of the value of Gy to demodulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter obtains the charging demand parameter information fed back by the wireless charging receiver. If so, demodulate the information received by the wireless charging transmitter using the ASM communication demodulation width parameter for which the charging demand parameter information of the wireless charging receiver can currently be obtained; the F Gy is the weight value F in any of the above embodiments Gy ; the ASM communication demodulation width parameter is the ASM communication demodulation width parameter in any of the above embodiments; the mapping data group is the mapping data group in any of the above embodiments.

[0122] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter obtains the charging demand parameter information fed back by the wireless charging receiver, increase the weight value F in the currently called mapping data group Gy .

[0123] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has obtained the charging demand parameter information fed back by the wireless charging receiver, increasing the weight value F with reference to Equation (X). Gy .

[0124] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has obtained the charging demand parameter information fed back by the wireless charging receiver, determining whether the weight value F in the called mapping data group at this time Gy is the maximum weight value F Gmax . If not, increase the weight value F in the called mapping data group at this time Gy , and at the same time, decrease the maximum weight value F Gmax .

[0125] In one embodiment, the method further includes: increasing the weight value F with reference to Equation (X) Gy , and at the same time modifying and setting the maximum weight value F Gmax to

[0126] where k G is a magnification factor, L G is a constant, △G is the minimum adjustment change unit of the ASM communication demodulation width parameter, and u is an integer.

[0127] In one embodiment, the method further includes: when the wireless charging transmitter still has not obtained the charging demand parameter information fed back by the wireless charging receiver after all the mapping data groups have been called, turning off the transmission power of the wireless charging transmitting coil.

[0128] In one embodiment, before determining whether the wireless charging transmitter has received the signal sent by the wireless charging receiver for feeding back the charging demand parameters, the method includes: setting the input voltage of the wireless charging transmitting coil to a first input voltage, the transmission frequency to a first transmission frequency, the duty cycle of the first transmission 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. If so, continue to determine whether the wireless charging transmitter has received the signal sent by the wireless charging receiver for feeding back the charging demand parameters; the time T5 is any moment when the wireless charging transmitting coil starts to work; the second characteristic value Q2 is the second characteristic value Q2 in any of the above embodiments; the first input voltage is the first input voltage in any of the above embodiments; the first transmission frequency is the first transmission frequency in any of the above embodiments; the first duty cycle is the first duty cycle in any of the above embodiments.

[0129] In one embodiment, each changed mapping data group is updated to the FLASH via I2C.

[0130] In one embodiment, each changed weight value is updated to the FLASH via I2C.

[0131] A wireless charging self-learning control method for long-distance adaptive ASM communication demodulation provided above

[0132] When the wireless charging transmitter receives a signal for feedback of charging demand parameters sent by the wireless charging receiver, the mapping data group where the weight value F Gy is located is called in order from largest to smallest to demodulate the communication information of the wireless charging transmitter, and it is determined whether the wireless charging transmitter has obtained the charging demand parameter information fed back by the wireless charging receiver. If so, the ASM communication demodulation width parameter that can currently obtain the charging demand parameter information of the wireless charging receiver is used to demodulate the information received by the wireless charging transmitter. Since whether the receiver can perform fast charging (generally 15 watts) or wireless charging with the EPP architecture with the transmitter also depends on whether the receiver and the transmitter can complete the charging protocol (complete authentication or binding) within the specified time. With such a setting, according to the above content, the larger the value of the weight value F Gy is, the more the operating parameters in the mapping data group where it is located fit the operating parameters of the wireless charging system composed of the user's common receiver, transmitter, and relay. Furthermore, when the user's common receiver needs to perform wireless charging, it can respond quickly in communication, preventing unsuccessful handshakes and only allowing low-power (generally 5 watts) charging, improving the response speed and enhancing the user experience.

[0133] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0134] A self-learning control method for a long-distance wireless charging system based on a relay coil. A plurality of mapping data groups that can be read and called by a computer processor are stored in the wireless charging system; the data in the mapping data group includes: D1, P i , F Pj , Q2, or D1, V i , F Vj , Q2; the D1 is the distance between the relay coil and the wireless charging transmitting coil; the P i is the transmitting power of the wireless charging transmitting coil; the V i is the input voltage of the wireless charging transmitting coil; the F Pj is the F PjThe weight value of the mapping data group where it is located; the F Vj is the weight value of the mapping data group where the F Vj is located; the Q2 is the characteristic value of the wireless charging transmitting coil when the distance between the relay coil and the wireless charging transmitting coil is D1; where, i is a positive integer; j is a positive integer; the method includes: setting the input voltage of the wireless charging transmitting coil to a first input voltage, the transmission frequency to a first transmission frequency, the duty cycle of the first transmission frequency to a 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, if so, then according to the weight value F Pj or F Vj in descending order of numerical value, sequentially call the mapping data group where the weight value is located to configure the operating parameters of the wireless charging transmitting coil, and determine whether the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, if so, then 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; the time T5 is any time when the wireless charging transmitting coil starts to work; 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.

[0135] In one embodiment, when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, increase the weight value F Pj or F Vj in the mapping data group called at this time.

[0136] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, increase the weight value F Pj with reference to formula (five), increase the weight value F Vj with reference to formula (six), 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;

[0137]

[0138]

[0139] where, k p and k v are magnification factors, L p and L vis a constant, △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, F Pj 、F P(j-1) 、F Vj and F V(j-1) are weight values and F P(j-1) is F Pj 's basic weight value, F V(j-1) is F Vj 's basic weight value, j is a positive integer.

[0140] 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 whether the weight value F Pj or F Vj in the called mapping data group at this time is the maximum weight value F Pmax or F Vmax , if not, then reducing the maximum weight value F Pmax or the maximum weight value F Vmax .

[0141] In one embodiment, the method further includes:

[0142] Modifying and setting the maximum weight value F Pmax to Modifying and setting the maximum weight value F Vmax to

[0143] In one embodiment, the method further includes: when all the mapping data groups have been called and the wireless charging transmitting end still has not received 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; and determining whether the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end. If not, adjusting the transmission power of the wireless charging transmitting coil to P1 with reference to the following formula (three), or adjusting the input voltage of the wireless charging transmitting coil to V1 with reference to the following formula (four):

[0144] P i =P ping +△P×m; (three)

[0145] V i =V ping +△V×m; (four)

[0146] Among them, P iis 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 transmitting 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 the charging request signal sent by the wireless charging receiving end. If so, the weight value F of P1 is obtained with reference to the following formula (five) P1 , the weight value F of V1 is obtained with reference to the following formula (six) V1 , and 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;

[0147]

[0148]

[0149] 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , j is a positive integer;

[0150] Record and set the D1, P1, F P1 , Q2 as the first mapping data group, or record and set the D1, V1, F V1 , Q2 as the first mapping data group.

[0151] In one embodiment, the method further includes: setting m as a positive number and adjusting it in the gradually increasing direction, and determining whether m is greater than or equal to the fourth set value. If so, setting m as a negative number and adjusting it in the gradually decreasing direction.

[0152] 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 between the wireless charging receiving coil and the wireless charging transmitting coil, obtaining the transmission power adjustment P2 of the wireless charging transmitting coil with reference to formula (III), and obtaining the weight value F of the P2 with reference to formula (V). P2 Alternatively, obtaining the input voltage adjustment V2 of the wireless charging transmitting coil with reference to formula (IV), and obtaining the weight value F of the V2 with reference to formula (VI). V2 ; recording and setting the P2 and F P2 into the second mapping data group, or recording and setting the V2 and F V2 into the second mapping data group; judging whether the F P2 is greater than the F P1 . If so, when calling the mapping data, the second mapping data group is called prior to the first mapping data group; otherwise, the first mapping data group is called prior to the second mapping data group.

[0153] In one embodiment, the method further includes: judging whether the F P1 is greater than a third set value. If so, setting the first mapping data group 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.

[0154] In one embodiment, the method further includes: adjusting the setting of the k p or k v value to adjust the replacement speed of the priority order when the first mapping data group and the second mapping data group are called.

[0155] The self-learning control method of the long-distance wireless charging system based on the relay coil provided above compares the characteristic value (the fifth characteristic value Q5) of the transmitting coil at a certain moment with the characteristic value (the second characteristic value Q2) of the transmitting coil when there is a relay coil and a wireless charging receiving end exists 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 or foreign object on the relay coil. When it is determined that there is a receiving end on the relay coil, then according to the weight value F Pj or F VjCall the mapping data group where the weight value is located in descending order of the numerical value to configure the operating parameters of the wireless charging transmitting coil, and determine whether the wireless charging transmitting end receives a 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end. With such a setting, in the case of long-distance charging, when the wireless charging system applying this control method performs wireless charging again, it can respond quickly, enter the wireless charging program to output energy more quickly, and improve the charging response speed and user experience.

[0156] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0157] A self-learning 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 the first input voltage, the transmitting frequency as the first transmitting frequency, the duty cycle of the first transmitting frequency as the first duty cycle, obtaining the fourth characteristic value Q4 of the wireless charging transmitting coil at time T4, and determining whether the fourth characteristic value Q4 is less than or equal to the second characteristic value Q2. If so, set the transmitting power of the wireless charging transmitting coil as the first PING power, or set the input voltage of the wireless charging transmitting coil as the first PING voltage, and determine whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If not, adjust the transmitting power of the wireless charging transmitting coil to P1 with reference to the following formula (III), or adjust the input voltage of the wireless charging transmitting coil to V1 with reference to the following formula (IV):

[0158] P i =P ping +△P×m; (III)

[0159] V i =V ping +△V×m; (IV)

[0160] 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 transmitting 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 determine again whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, obtain the weight value F of P1 with reference to the following formula (V)P1 , obtain the weight value F of the V1 with reference to the following formula (VI): V1 , 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;

[0161]

[0162]

[0163] where 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , j is a positive integer; the second eigenvalue Q2 is stored in the wireless charging system, and is the eigenvalue 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 distance D1; the first PING power and / or the first PING voltage are the 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 distance D1; the time point T4 is the time point on the set period; the eigenvalue is the oscillation decay coefficient of the voltage of the wireless charging transmitting coil, or the oscillation decay coefficient of the current, or the oscillation decay coefficient of the power; record and set the D1, P1, F P1 , Q2 as the first mapping data group, or record and set the D1, V1, F V1 , Q2 as the first mapping data group.

[0164] In one embodiment, before determining whether the fourth eigenvalue Q4 is less than or equal to the second eigenvalue Q2, the method further includes obtaining the distance D1 between the relay coil and the wireless charging transmitting coil, and the method includes: setting the transmission frequency of the wireless charging transmitting coil as the second transmission frequency, and obtaining the average eigenvalue q x0 of the wireless charging transmitting coil within the second time period from T x1 ; the second transmission frequency is greater than the first transmission frequency; obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (II): x ;

[0165] D1 = b × e ax (II)

[0166] Wherein, a and b are constants, and the value of x is the average eigenvalue q x value. 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. 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;

[0167] In one embodiment, the method further includes a method for obtaining the second eigenvalue Q2, and the method includes: continuously collecting n eigenvalues q of the wireless charging transmitting coil at a set period within a first time period from T0 to T1 in the same environment as when obtaining the fourth eigenvalue Q4 n and obtaining the first eigenvalue Q1 with reference to formula (I):

[0168] Q1 = [(q1 + q 2+ q 3+ ... + q n ) - (q min + q max )] / (n - 2) (I)

[0169] Wherein, the q min is the minimum value among the n eigenvalues q of the wireless charging transmitting coil n ; the q max is the maximum value among the n eigenvalues q of the wireless charging transmitting coil 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 time T2; the time T2 is any time 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.

[0170] In one embodiment, the method further includes: determining whether the first eigenvalue Q1 is greater than or equal to a second set value; otherwise, obtaining a third eigenvalue Q3 of the wireless charging transmitting coil at time T3 and storing it in the wireless charging system for retrieval when used next time; 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.

[0171] In one embodiment, the method further includes: determining whether the fifth eigenvalue Q5 is less than or equal to the third eigenvalue Q3 or the second set value; if so, controlling an alarm indicator light in the wireless charging system to turn on or a buzzer to sound.

[0172] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter and / or a first FSK communication modulation depth parameter according to the distance D1 between the wireless charging transmitting coil and the relay coil, and storing them in the wireless charging system for retrieval when used next time.

[0173] The above-provided self-learning control method for a long-distance wireless charging system based on a relay coil compares the eigenvalue (the fourth eigenvalue Q4) of the transmitting coil at a certain moment with the eigenvalue (the second eigenvalue Q2) of the transmitting coil when there is a relay coil and a wireless charging receiving end on the relay coil, and sets the PING parameter under the condition of the distance D1 for the transmitting coil to see if a charging request signal can be obtained. If not, the transmitting power or input voltage of the transmitting coil is gradually adjusted through a set formula until a charging request signal sent by the receiving end is obtained. After receiving the charging signal, the weight value of the parameters in this state is calculated as a mark for the order of mobilization. With such a setting, in the case of long-distance charging, when the wireless charging system applying this control method performs wireless charging again, it can respond quickly, enter the wireless charging program to output energy more quickly, and improve the charging response speed and user experience.

[0174] In addition, the present application also provides a computer storage medium.

[0175] A computer storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the method described in any one of the above embodiments. It can facilitate the program upgrade and transformation of the wireless charger.

[0176] In the above content, at least in some embodiments, the object of the present invention is to overcome or improve at least one drawback of the prior art, or to provide a useful alternative. The set of outlined embodiments is provided to foreshadow potential patent claims based on the selection of technical features disclosed in the following "Detailed Description", and this set of outlined embodiments is not intended to limit the scope of the extendable claims in any way. Detailed Description

[0177] In this patent document, the various embodiments discussed below and used to describe the principles or methods of the present disclosure are for illustrative purposes only and should not be construed in any way as limiting the scope of the present disclosure. Those skilled in the art should understand that the principles or methods of the present disclosure can be implemented in any appropriately arranged wireless charging system. Preferred embodiments of the present disclosure will be described below. In the following description, detailed descriptions of well-known functions or configurations will be omitted to avoid obscuring the subject matter of the present disclosure with unnecessary details. Moreover, the terms used herein will be defined based on the functions of this application. Therefore, the terms may vary according to the intention or usage of the user or operator. Therefore, the terms used herein must be understood based on the descriptions made herein.

[0178] A control method for a long-distance adaptive wireless charging system, the method comprising: setting the input voltage of the wireless charging transmitting coil to a first input voltage, setting the transmitting frequency of the wireless charging transmitting coil to a first transmitting frequency, setting the duty cycle of the transmitting frequency of the wireless charging transmitting coil to a first duty cycle, and continuously collecting 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 by referring to formula (1):

[0179] Q = [(q1 + q 2+ q 3+ ... + q n ) - (q min + q max )] / (n - 2) (1)

[0180] where q min is the minimum value among the characteristic values q of n wireless charging transmitting coils n ; q max is the maximum value among the characteristic values q of n wireless charging transmitting coils n ; n is a positive integer greater than or equal to 3; determining whether the first characteristic value Q1 is less than or equal to a first set value, and if so, determining that there is a relay coil in the wireless charging system, and obtaining a second characteristic value Q2 of the wireless charging transmitting coil at time T2; T2 is any moment within a time period other than the first time period from T0 to T1; setting the transmitting frequency of the wireless charging transmitting coil to a second transmitting frequency, at Tx0 to T x1 Obtain the average eigenvalue q of the wireless charging transmitting coil within the second time period from x ; T x0 to T x1 The second time period from T to T is any time period within the first time period from non-T0 to T1; the second transmission frequency is greater than the first transmission frequency; obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (2):

[0181] D = b × e ax (2)

[0182] where a and b are constants, and the value of x is the value of the average eigenvalue q x value;

[0183] Calculate the first PING power or the first PING voltage according to the distance D1 between the wireless charging transmitting coil and the relay coil;

[0184] Set the transmission power of the wireless charging transmitting coil to the first PING power, or set the input voltage of the wireless charging transmitting coil to the first PING voltage, and determine whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If not, adjust the transmission power of the wireless charging transmitting coil to P1 with reference to formula (3), or adjust the input voltage of the wireless charging transmitting coil to V1 with reference to formula (4):

[0185] P i = P ping + △P × m (3)

[0186] V i = V ping + △V × m; (4)

[0187] where 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 then determine again whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, increase the weight value of P1 by F P1 , or increase the weight value of V1 by F V1 , and adjust the transmission power of the wireless charging transmitting coil to charge the wireless charging receiving end according to the requirements of the wireless charging receiving end; set D1, P1, F P1, Q2 is recorded and set as the first mapping data group, or D1, V1, F V1 , Q2 is recorded and set as the first mapping data group.

[0188] In one embodiment, the weight value F of P1 is obtained with reference to formula (V) P1 , and the weight value F of V1 is obtained with reference to formula (VI) V1 :

[0189]

[0190]

[0191] where 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , and j is a positive integer. F P(j-1) refers to the weight value before the change of F Pj , and F V(j-1) refers to the weight value before the change of F Vj .

[0192] In one embodiment, it is defaulted that the value of F P0 is 0, and it is defaulted that the value of F V0 is 0.

[0193] In one embodiment, the method further includes: setting m as a positive number and adjusting it in the gradually increasing direction, and determining whether m is greater than or equal to the second set value. If so, setting m as a negative number and adjusting it in the gradually decreasing direction.

[0194] 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 with reference to formula (III), and obtaining the weight value F of P2 with reference to formula (V) P2 , or obtaining the input voltage adjustment V2 of the wireless charging transmitting coil with reference to formula (IV), and obtaining the weight value F of V2 with reference to formula (VI) V2 ;

[0195] Recording and setting P2, F P2 into the second mapping data group, or V2, FV2 Record and set it into the second mapping data group; judge whether F P2 is greater than F P1 , if so, when calling the mapping data, the second mapping data group is called prior to the first mapping data group; otherwise, the first mapping data group is called prior to the second mapping data group.

[0196] In one embodiment, the method further includes: judging whether F P1 is greater than a third set value, if so, set the first mapping data group 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.

[0197] In one embodiment, the method further includes: by adjusting the setting of k p or k v value to adjust the replacement speed of the priority order when the first mapping data group and the second mapping data group are called.

[0198] In one embodiment, set the transmission power of the wireless charging transmitting coil as the first PING power, or set the input voltage of the wireless charging transmitting coil as the first PING voltage, and judge whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, adjust the transmission power of the wireless charging transmitting coil to charge the wireless charging receiving end according to the requirements of the wireless charging receiving end; record and set the distance D1, the first PING power, and / or the first PING voltage, and the second eigenvalue Q2 into the third mapping data group, or record and set the first PING power and / or the first PING voltage into the first mapping data group.

[0199] In one embodiment, before obtaining the distance D1 between the wireless charging transmitting coil and the relay coil, the method further includes: judging whether the first eigenvalue Q1 is greater than or equal to a fourth set value. If so, continue to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtain the third eigenvalue Q3 of the wireless charging transmitting coil at the moment T3; record and set the third eigenvalue Q3 into the fourth mapping data group; the moment T3 is any moment within the first time period from non-T0 to T1; the first set value is greater than the fourth set value.

[0200] 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 eigenvalue Q1 is greater than or equal to a fourth set value; if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining the third eigenvalue Q3 of the wireless charging transmitting coil at time T3; recording and setting the third eigenvalue Q3 into the 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 fourth set value.

[0201] 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 eigenvalue Q1 is greater than or equal to a fourth set value; if so, continuing to obtain the distance D1 between the wireless charging transmitting coil and the relay coil; otherwise, obtaining the third eigenvalue Q3 of the wireless charging transmitting coil at time T3; recording and setting the third eigenvalue Q3 as the fourth mapping data group, and recording and setting the third eigenvalue Q3 into the 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 fourth set value.

[0202] In one embodiment, the method further includes: calculating a first ASM communication demodulation width parameter according to the distance D1 between the wireless charging transmitting coil and the relay coil; recording and setting the first ASM communication demodulation width parameter into the first mapping data group.

[0203] In one embodiment, the method further includes: calculating a first FSK communication modulation depth parameter according to the distance D1 between the wireless charging transmitting coil and the relay coil; recording and setting the first FSK communication modulation depth parameter into the first mapping data group.

[0204] 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 the distance D1 between the wireless charging transmitting coil and the relay coil; recording and setting the first ASM communication demodulation width parameter and the first FSK communication modulation depth parameter into the first mapping data group.

[0205] In one embodiment, the method further includes: calculating a first FSK communication modulation depth parameter T1 according to the distance D1 between the wireless charging transmitting coil and the relay coil, and setting the weight value of the first FSK communication modulation depth parameter to F T1 ; modulating the information sent from the wireless charging transmitting end to the wireless charging receiving end with the first FSK communication modulation depth parameter, and determining whether the wireless charging transmitting end has received the feedback information from the wireless charging receiving end; if not, calculating a second FSK communication modulation depth parameter T2 with reference to formula (seven):

[0206] T w = T (w-1) + △T × h (Seven)

[0207] Among them, T w is the actual FSK communication modulation depth parameter of the wireless charging transmitter, T (w-1) is the basic FSK communication modulation depth parameter of T w , △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, h is an integer, w is a positive integer; modulate the information sent from the wireless charging transmitter to the wireless charging receiver with the second FSK communication modulation depth parameter, and check again whether the wireless charging transmitter has received the feedback information from the wireless charging receiver. If so, obtain the weight value F of T2 with reference to formula (Eight) T2 :

[0208]

[0209] Among them, k T is the magnification, L T is a constant, F Tr and F T(r-1) are weight values and F T(r-1) is the basic weight value of F Tr , that is, the weight value before the change of F Tr , r is a positive integer; D1, T1, F T1 , Q2 are recorded and set as the fifth mapping data group; D1, T2, F T2 , Q2 are recorded and set as the sixth mapping data group. In one embodiment, the value of F T0 is defaulted to 0.

[0210] In one embodiment, the method further includes: setting h as a positive number and adjusting it in the gradually increasing direction, and determining whether h is greater than or equal to the third set value. If so, set h as a negative number and adjust it in the gradually decreasing direction.

[0211] In one embodiment, the method further includes: setting the calling order of the fifth mapping data group and the sixth mapping data group according to the magnitude order of F T1 and F T2 .

[0212] 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.

[0213] In one embodiment, the method further includes: when it is determined that F T2Greater than F T1 When it is, determine F T2 Whether it is greater than the third 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.

[0214] In one embodiment, the method further includes: by adjusting the set value of k T To adjust the replacement speed of the order of invocation of each mapping data group when adjusting multiple mapping data groups for information modulation.

[0215] In one embodiment, the method further includes: according to the distance D1 between the wireless charging transmitting coil and the relay coil, calculate the first ASM communication demodulation width parameter G1, and set the weight value of the first ASM communication demodulation width parameter G1 as F G1 ; 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 the second ASM communication demodulation width parameter G2 with reference to formula (IX):

[0216] G s =G (s-1) +△G×u (IX)

[0217] Wherein, 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, s is a positive integer; 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 fed back by the wireless charging receiving end. If so, obtain the weight value F of G2 with reference to formula (X) G2 :

[0218]

[0219] Wherein, 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 F Gy 's basic weight value, that is, F Gy The weight value before the change, y is a positive integer; record D1, G1, F G1 , Q2 and set them as the seventh mapping data group; set D1, G2, FG2 , Q2 records and is set as the eighth mapping data group.

[0220] In one embodiment, the default F G0 has a value of 0.

[0221] In one embodiment, the method further includes: setting u as a positive number and adjusting it in the gradually increasing direction, and determining whether u is greater than or equal to a third set value. If so, setting u as a negative number and adjusting it in the gradually decreasing direction.

[0222] In one embodiment, the method further includes: according to F G1 and F G2 to set the calling order of the seventh mapping data group and the eighth mapping data group when they are called.

[0223] In one embodiment, the method further includes: determining whether F G2 is greater than F G1 . If so, when calling the mapping data, the eighth mapping data group is called prior to the seventh mapping data group; otherwise, the seventh mapping data group is called prior to the eighth mapping data group.

[0224] In one embodiment, the method further includes: when it is determined that F G2 is greater than F G1 , determining whether F G2 is greater than a third set value. If so, setting the eighth mapping data group as the default mapping data group for information demodulation 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.

[0225] In one embodiment, the method further includes: adjusting the setting of the value of k G to adjust the replacement speed of the calling order of each mapping data group when adjusting multiple mapping data groups for information demodulation.

[0226] In one embodiment, each mapping data group is updated to the FLASH via I2C.

[0227] In one embodiment, the changed weight value is updated to the FLASH via I2C.

[0228] In one embodiment, the fourth eigenvalue Q4 of the wireless charging transmitting coil at time T4 is obtained, and it is determined whether the fourth eigenvalue Q4 is less than or equal to the second eigenvalue Q2. If so, it is determined whether the wireless charging transmitting end has received 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end; Time T4 is within the first time period from T0 to T1 and is a time point on the set period. That is, the fourth eigenvalue Q4 of the wireless charging transmitting coil is periodically obtained.

[0229] In one embodiment, before determining whether the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, the method further includes: determining whether the fourth eigenvalue Q4 is less than or equal to the third eigenvalue Q3. If so, the alarm indicator light in the control system is turned on or the buzzer sounds.

[0230] In one embodiment, the first input voltage is between 4.5V and 5.5V.

[0231] In one embodiment, the first transmission frequency is between 0.1Hz and 1Hz.

[0232] In one embodiment, the second transmission frequency is between 100 kHz and 150 kHz.

[0233] In one embodiment, the first duty cycle is between 10% and 50%.

[0234] In one embodiment, the first duty cycle is 20%.

[0235] In one embodiment, the first set value is between 2.6 and 3.5.

[0236] In one embodiment, the first set value is 3.

[0237] In one embodiment, the fourth set value is between 1.8 and 2.5.

[0238] In one embodiment, the fourth set value is 2.

[0239] In one embodiment, the value of the second set value is between 7 and 15.

[0240] In one embodiment, the value of the second set value is between 5 and 12.

[0241] In one embodiment, the value of the second set value is 11.

[0242] In one embodiment, the value of the second set value is 9.

[0243] In one embodiment, the value of the third set value is between 3 and 10.

[0244] In one embodiment, the value of the third set value is between 4 and 8.

[0245] In one embodiment, the value of the third set value is 5.

[0246] In one embodiment, the value of the third set value is 7.

[0247] In one embodiment, the value of m is between -11 and 11.

[0248] In one embodiment, the value of m is between -8 and 8.

[0249] In one embodiment, the value of m is between -5 and 5.

[0250] In one embodiment, the value of m is between -7 and 7.

[0251] In one embodiment, the value of h is between -11 and 11.

[0252] In one embodiment, the value of h is between -8 and 8.

[0253] In one embodiment, the value of h is between -5 and 5.

[0254] In one embodiment, the value of h is between -7 and 7.

[0255] In one embodiment, the value of u is between -11 and 11.

[0256] In one embodiment, the value of u is between -8 and 8.

[0257] In one embodiment, the value of u is between -5 and 5.

[0258] In one embodiment, the value of u is between -7 and 7.

[0259] In one embodiment, the eigenvalue is the signal eigenvalue of the wireless charging transmitting coil voltage.

[0260] In one embodiment, the eigenvalue is the signal eigenvalue of the wireless charging transmitting coil power.

[0261] In one embodiment, the eigenvalue is the signal eigenvalue of the wireless charging transmitting coil current.

[0262] In one embodiment, the first eigenvalue Q1 is the oscillation decay coefficient of the entire system. Through this decay coefficient, it is possible to detect whether there is a relay coil and whether there are metallic foreign objects on the relay coil.

[0263] In one embodiment, the first eigenvalue Q1 is the oscillation decay coefficient of the energy in the entire system under a driving signal of 0.5 Hz.

[0264] In one embodiment, when the first eigenvalue Q1 is greater than or equal to the first set value, the wireless charging transmitter continues to wait.

[0265] The self-learning control method of a long-distance adaptive wireless charging system provided above enables the wireless charging transmitting coil to operate with a very weak charge for a short period in an environment of a first input voltage, a first transmission frequency, and a first duty cycle during the initial stage. By periodically collecting the eigenvalue of the transmitting coil and obtaining the first eigenvalue Q1 of the transmitting coil according to a specific logical relationship, it is possible to determine whether there is a relay coil in the system. If there is a relay coil, the distance D1 between the transmitting coil and the relay coil is calculated through an innovative fitting formula in combination with a second set of operation logics. After knowing the distance, the first PING power or the first PING voltage is calculated through a third set of operation logics. At the same time, the transmitting power or the 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 wireless charging function) within the charging system range can be powered on and send information to the transmitting end. If the receiving end is not powered on under the environment of the first PING power or the first PING voltage, an attempt is made to increase the PING power to P1 or increase the PING voltage to V1. If the receiving end is powered on under the environment of the P1 power or the V1 voltage, it is recorded that the environment of the P1 power or the V1 voltage is more suitable at this time. In order to enable the receiving end to respond quickly when charging again in this wireless charging system, the weight value of the more suitable environment of the P1 power or the V1 voltage is increased, and D1, P1, F P1 、Q2 are recorded and set as the first mapping data group. Alternatively, D1, V1, F V1 、Q2 are recorded and set as the first mapping data group. For being preferentially retrieved and applied to achieve the purpose of rapid response of wireless charging. So that when wireless charging is performed again, the charging parameters in the first mapping data group can be quickly retrieved, enabling the wireless charger to respond quickly and improving the user experience.

[0266] According to the above method, the present application also provides a control method that applies the learning results of the above method.

[0267] 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 as a first input voltage, the transmitting frequency as a first transmitting frequency, and the duty cycle of the first transmitting frequency as 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 a second eigenvalue Q2. If so, the mapping data groups where the weight values F Pj or F Vj are located are sequentially called in descending order of the numerical values of the weight values to configure the operating parameters of the wireless charging transmitting coil, and determining 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end; T5 is any moment when the wireless charging transmitting coil starts to work; the second eigenvalue Q2 is the second eigenvalue Q2 in any of the above embodiments; F Pj is the weight value F in any of the above embodiments Pj ; F Vj is the weight value F in any of the above embodiments Vj ; the first input voltage is the first input voltage in any of the above embodiments; the first transmitting frequency is the first transmitting frequency in any of the above embodiments; the first duty cycle is the first duty cycle in any of the above embodiments.

[0268] In one embodiment, the method further comprises: when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, increasing the weight value F Pj or F Vj in the currently called mapping data group.

[0269] In one embodiment, the method further comprises: when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, increasing the weight value F Pj or F Vj in the currently called mapping data group, and simultaneously decreasing the weight value in the previous mapping data group in the call order.

[0270] In one embodiment, the method further comprises: when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, increasing the weight value F Pj with reference to formula (five), and increasing the weight value F Vj with reference to formula (six).

[0271] In one embodiment, the method further comprises: when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, determining the weight value F Pj or FVj Whether it is 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, decrease the maximum weight value F Pmax or the maximum weight value F Vmax .

[0272] In one embodiment, the method further includes: increasing the weight value F with reference to formula (five) Pj , increasing the weight value F with reference to formula (six) Vj , and at the same time setting the maximum weight value F Pmax to be modified and set as Set the maximum weight value F Vmax to be modified and set as

[0273] where k P is the magnification factor, L P is a constant, △P is the minimum adjustment change unit of the transmission power of the wireless charging transmitting coil, and m is an integer.

[0274] In one embodiment, the method further includes: when all the mapping data groups have been called and the wireless charging transmitter still has not received a charging request signal sent by the wireless charging receiver, set the transmission power of the wireless charging transmitting coil to the first PING power, or set the input voltage of the wireless charging transmitting coil to the first PING voltage; the first PING power is the first PING power in any of the above embodiments; the first PING voltage is the first PING voltage in any of the above embodiments.

[0275] In one embodiment, when all the mapping data groups have been called and the wireless charging transmitter still has not received a charging request signal sent by the wireless charging receiver, set the transmission power of the wireless charging transmitting coil to the first PING power, or set the input voltage of the wireless charging transmitting coil to the first PING voltage, and determine whether the wireless charging transmitter has received a charging request signal sent by the wireless charging receiver. If not, adjust the transmission power of the wireless charging transmitting coil to P3 with reference to formula (three), or adjust the input voltage of the wireless charging transmitting coil to V3 with reference to formula (four), and determine again whether the wireless charging transmitter has received a charging request signal sent by the wireless charging receiver. If so, obtain the weight value F of P3 with reference to formula (five) P3 , or obtain the weight value F of V3 with reference to formula (six) V3 , and adjust the transmission power of the wireless charging transmitting coil to charge the wireless charging receiver according to the requirements of the wireless charging receiver; adjust P3 and F P3Record and set it to the fifth mapping data group, or, V3 and F V3 Record and set it to the fifth mapping data group; the first PING power is the first PING power in any of the above embodiments; the first PING voltage is the first PING voltage in any of the above embodiments.

[0276] The self-learning control method of a long-distance adaptive wireless charging system provided above, by obtaining the eigenvalue (the fifth eigenvalue Q5) of the transmitting coil at a certain moment and comparing it with the eigenvalue (the second eigenvalue Q2) of the transmitting coil when there is a relay coil and a wireless charging receiver on the relay coil, can quickly predict whether there is a relay coil in the wireless charging system and whether there is a receiver on the relay coil, and then according to the weight value F Pj or F Vj Call the mapping data group where the weight value is located in descending order of the numerical value of to directly configure the operating parameters of the wireless charging transmitting coil, so as to quickly adapt to the connection requirements of common receivers. For the common receivers used by users, this method can make the common receivers get power more quickly and send a charging request signal to the transmitter, improving the response speed of the wireless charging system to common receivers, that is, enabling the wireless charging system applying this control method to quickly respond and enter the wireless charging program to output energy more quickly when performing wireless charging again, improving the user experience.

[0277] According to the above method, the present application also provides another control method applying the learning results of the above method.

[0278] A control method for a long-distance adaptive wireless charging system, the method includes:

[0279] Set 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, obtain the fifth eigenvalue Q5 of the wireless charging transmitting coil at time T5, and determine whether the fifth eigenvalue Q5 is less than or equal to the second eigenvalue Q2. If so, determine whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver. If so, adjust the transmitting power of the wireless charging transmitting coil according to the requirements of the wireless charging receiver to charge the wireless charging receiver; T5 is any moment when the wireless charging transmitting coil starts to work; the second eigenvalue Q2 is the second eigenvalue Q2 in any of the above embodiments; the first input voltage is the first input voltage in any of the above embodiments; the first transmitting frequency is the first transmitting frequency in any of the above embodiments; the first duty cycle is the first duty cycle in any of the above embodiments.

[0280] In one embodiment, before determining whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, 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; the first PING power is the first PING power in any of the above embodiments; the first PING voltage is the first PING voltage in any of the above embodiments.

[0281] In one embodiment, before determining whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, the method further includes: determining whether a fifth eigenvalue Q5 is less than or equal to a third eigenvalue Q3, and if so, turning on an alarm indicator or sounding a buzzer in the control system; the third eigenvalue Q3 is the third eigenvalue Q3 in any of the above embodiments.

[0282] In one embodiment, before determining whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, the method further includes: determining whether a fifth eigenvalue Q5 is less than or equal to a fourth set value, and if so, turning on an alarm indicator or sounding a buzzer in the control system;

[0283] The fourth set value is the fourth set value in any of the above embodiments.

[0284] The above-provided control method for a long-distance adaptive wireless charging system can quickly pre-judge whether there is a relay coil in the wireless charging system and whether there is a receiver on the relay coil by obtaining the eigenvalue (fifth eigenvalue Q5) of the transmitting coil at a certain moment and comparing it with the eigenvalue (second eigenvalue Q2) of the transmitting coil when there is a relay coil and a wireless charging receiver on the relay coil. Then, by determining whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, it can accurately determine whether there is a relay coil in the wireless charging system and whether there is a receiver on the relay coil. With such a setting, the wireless charging system applying this control method can respond quickly when performing wireless charging again, enter the wireless charging program to output energy more quickly, and improve the user experience.

[0285] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0286] A long-distance adaptive FSK communication modulation wireless charging self-learning control method, the method includes: determining whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, and if so, according to the weight value F TrCall the mapping data group where the weight value is located in descending order of the value to modulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter receives a feedback signal sent by the wireless charging receiver based on the communication information. If so, modulate the information sent by the wireless charging transmitter to the wireless charging receiver with the FSK communication modulation depth parameter for which feedback information can currently be received; F Tr is the weight value F in any of the above embodiments Tr ; the FSK communication modulation depth parameter is the FSK communication modulation depth parameter in any of the above embodiments; the mapping data group is the mapping data group in claim 1.

[0287] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter receives a feedback signal from the wireless charging receiver, increase the weight value F in the currently called mapping data group Tr .

[0288] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter receives a feedback signal from the wireless charging receiver, increase the weight value F with reference to formula (VIII) Tr .

[0289] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter receives a feedback signal from the wireless charging receiver, determine whether the weight value F in the currently called mapping data group Tr is the maximum weight value F Tmax , if not, increase the weight value F in the currently called mapping data group Tr , and at the same time, decrease the maximum weight value F Tmax .

[0290] In one embodiment, the method further includes: increase the weight value F with reference to formula (VIII) Tr , and at the same time modify and set the maximum weight value F Tmax to

[0291] where k T is the magnification factor, L T is a constant, △T is the minimum adjustment change unit of the FSK communication modulation depth parameter, and h is an integer.

[0292] In one embodiment, the method further includes: when all the mapping data groups have been called and the wireless charging transmitter still does not receive a feedback signal from the wireless charging receiver, reduce or turn off the transmission power of the wireless charging transmitting coil.

[0293] In one embodiment, before determining whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, the method includes: setting the input voltage of the wireless charging transmitting coil to a first input voltage, the transmission frequency to a first transmission frequency, and the duty cycle of the first transmission frequency to a first duty cycle; obtaining a fifth characteristic value Q5 of the wireless charging transmitting coil at time T5; and determining whether the fifth characteristic value Q5 is less than or equal to a second characteristic value Q2. If so, continue to determine whether the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver. Time T5 is any moment when the wireless charging transmitting coil starts to work. The second characteristic value Q2 is the second characteristic value Q2 in any of the above embodiments. The first input voltage is the first input voltage in any of the above embodiments. The first transmission frequency is the first transmission frequency in any of the above embodiments. The first duty cycle is the first duty cycle in any of the above embodiments.

[0294] For the wireless charging self-learning control method of long-distance adaptive FSK communication modulation provided above, when the wireless charging transmitter receives a charging request signal sent by the wireless charging receiver, the mapping data group where the weight value F is located is called in order from largest to smallest to modulate the communication information of the wireless charging transmitter, and it is determined whether the wireless charging transmitter receives a 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 receiver can perform fast charging (usually 15 watts) or wireless charging with the EPP architecture with the transmitter also depends on whether the receiver and the transmitter can complete the charging protocol (complete authentication or binding) within a specified time, with such a setting, according to the above content, the larger the value of the weight value F, the more the operating parameters in the mapping data group where it is located fit the operating parameters of the user's common receiver, transmitter, and relay to form a wireless charging system. Furthermore, when the user's common receiver needs to perform wireless charging, it can respond quickly in communication, preventing unsuccessful handshakes and only being able to charge at a low power (usually 5 watts), improving the response speed and enhancing the user experience. Tr Tr

[0295] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0296] A long-distance adaptive ASM communication demodulation wireless charging self-learning control method, the method includes: determining whether the wireless charging transmitter receives a signal sent by the wireless charging receiver for feedback of charging demand parameters. If so, according to the weight value F GyCall the mapping data group where the weight value is located in descending order of the numerical value to demodulate the communication information of the wireless charging transmitter, and determine whether the wireless charging transmitter has obtained the charging demand parameter information feedback by the wireless charging receiver. If so, demodulate the information received by the wireless charging transmitter using the ASM communication demodulation width parameter that can currently obtain the charging demand parameter information of the wireless charging receiver; F Gy is the weight value F in any of the above embodiments Gy ; the ASM communication demodulation width parameter is the ASM communication demodulation width parameter in any of the above embodiments; the mapping data group is the mapping data group in any of the above embodiments.

[0297] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has obtained the charging demand parameter information feedback by the wireless charging receiver, increase the weight value F in the currently called mapping data group Gy .

[0298] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has obtained the charging demand parameter information feedback by the wireless charging receiver, increase the weight value F with reference to formula (ten) Gy .

[0299] In one embodiment, the method further includes: when it is determined that the wireless charging transmitter has obtained the charging demand parameter information feedback by the wireless charging receiver, determine whether the weight value F in the currently called mapping data group Gy is the maximum weight value F Gmax , if not, increase the weight value F in the currently called mapping data group Gy , at the same time, decrease the maximum weight value F Gmax .

[0300] In one embodiment, the method further includes: increase the weight value F with reference to formula (ten) Gy , and at the same time modify and set the maximum weight value F Gmax to

[0301] where 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.

[0302] In one embodiment, the method further includes: when all the mapping data groups have been called and the wireless charging transmitter still has not obtained the charging demand parameter information feedback by the wireless charging receiver, turn off the transmission power of the wireless charging transmitting coil.

[0303] In one embodiment, before determining whether the wireless charging transmitter has received a signal for feedback of charging demand parameters sent by the wireless charging receiver, 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 a second eigenvalue Q2. If so, continue to determine whether the wireless charging transmitter has received a signal for feedback of charging demand parameters sent by the wireless charging receiver. Time T5 is any moment when the wireless charging transmitting coil starts to work. The second eigenvalue Q2 is the second eigenvalue Q2 in any of the above embodiments. The first input voltage is the first input voltage in any of the above embodiments. The first transmitting frequency is the first transmitting frequency in any of the above embodiments. The first duty cycle is the first duty cycle in any of the above embodiments.

[0304] In one embodiment, each changed mapping data group is updated to the FLASH through I2C.

[0305] In one embodiment, each changed weight value is updated to the FLASH through I2C.

[0306] The above-provided wireless charging self-learning control method for long-distance adaptive ASM communication demodulation

[0307] When the wireless charging transmitter receives a signal for feedback of charging demand parameters sent by the wireless charging receiver, the mapping data group where the weight value F Gy is located is called in descending order of the value of the weight value to demodulate the communication information of the wireless charging transmitter, and it is determined whether the wireless charging transmitter has obtained the charging demand parameter information fed back by the wireless charging receiver. If so, the ASM communication demodulation width parameter that can currently obtain the charging demand parameter information of the wireless charging receiver is used to demodulate the information received by the wireless charging transmitter. Since whether the receiver can perform fast charging (generally 15 watts) or wireless charging with the EPP architecture with the transmitter also depends on whether the receiver and the transmitter can complete the charging protocol (complete authentication or binding) within a specified time, with such a setting, according to the above content, the larger the value of the weight value F Gy is, the more the operating parameters in the mapping data group where it is located fit the operating parameters of the user's common receiver, transmitter, and relay to form a wireless charging system. Furthermore, when the user's common receiver needs to perform wireless charging, it can respond quickly in communication, preventing only low-power (generally 5 watts) charging due to unsuccessful handshakes, improving the response speed and enhancing the user experience.

[0308] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0309] A self-learning control method for a long-distance wireless charging system based on a relay coil. A number of mapping data groups that can be read and called by a computer processor are stored in the wireless charging system. The data in the mapping data groups includes: D1, P i , F Pj , Q2, or D1, V i , F Vj , Q2. D1 is the distance between the relay coil and the wireless charging transmitting coil. P i is the transmitting power of the wireless charging transmitting coil. V i is the input voltage of the wireless charging transmitting coil. F Pj is the weight value of the mapping data group where F Pj is located. F Vj is the weight value of the mapping data group where F Vj is located. Q2 is the characteristic value of the wireless charging transmitting coil when the distance between the relay coil and the wireless charging transmitting coil is D1. Wherein, i is a positive integer. j is a positive integer. The method includes: setting the input voltage of the wireless charging transmitting coil as the first input voltage, the transmitting frequency as the first transmitting frequency, the duty cycle of the first transmitting frequency as 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. If so, call the mapping data groups where the weight values F Pj or F Vj are located in descending order of the numerical values of the weight values to configure the operating parameters of the wireless charging transmitting coil, and determining whether the wireless charging transmitting end has received a 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end. T5 is any moment when the wireless charging transmitting coil starts to work. The characteristic value is the oscillation decay coefficient of the voltage of the wireless charging transmitting coil, or the oscillation decay coefficient of the current, or the oscillation decay coefficient of the power.

[0310] In one embodiment, when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, increase the weight value F Pj or F Vj in the mapping data group called at this time.

[0311] In one embodiment, the method further includes: when it is determined that the wireless charging transmitting end has received a charging request signal sent by the wireless charging receiving end, increase the weight value F Pj with reference to formula (five), and increase the weight value F Vj with reference to formula (six)., 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.

[0312]

[0313]

[0314] Among them, k p and k v are magnification factors, L p and L v are constants, △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, F Pj , F P(j-1) , F Vj and F V(j-1) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , and j is a positive integer.

[0315] 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, determine whether the weight value F Pj or F Vj in the called mapping data group at this time is the maximum weight value F Pmax or F Vmax . If not, then decrease the maximum weight value F Pmax or the maximum weight value F Vmax .

[0316] In one embodiment, the method further includes:

[0317] Modify and set the maximum weight value F Pmax to Modify and set the maximum weight value F Vmax to

[0318] In one embodiment, the method further includes: when all the mapping data groups have been called and the wireless charging transmitting end still has not received the charging request signal sent by the wireless charging receiving end, set the transmission power of the wireless charging transmitting coil to the first PING power, or set the input voltage of the wireless charging transmitting coil to the first PING voltage. And determine whether the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end. If not, adjust the transmission power of the wireless charging transmitting coil to P1 with reference to the following formula (three), or adjust the input voltage of the wireless charging transmitting coil to V1 with reference to the following formula (four):

[0319] P i = P ping + △P × m. (Three)

[0320] V i = V ping + △V × m. (Four)

[0321] Among them, P i is the actual power value of the wireless charging transmitting coil, V i is the actual input voltage value of the wireless charging transmitting coil, P ping is the first PING power, V ping is the first PING voltage, △P is the minimum adjustment change unit of the transmitting 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 the charging request signal sent by the wireless charging receiving end. If so, the weight value F of P1 is obtained with reference to the following formula (Five) P1 , the weight value F of V1 is obtained with reference to the following formula (Six) V1 , and 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.

[0322]

[0323]

[0324] Among them, 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , j is a positive integer. Record and set D1, P1, F P1 , Q2 as the first mapping data group, or record and set D1, V1, F V1 , Q2 as the first mapping data group.

[0325] In one embodiment, the method further includes: setting m as a positive number and adjusting it in the gradually increasing direction, and determining whether m is greater than or equal to the fourth set value. If so, setting m as a negative number and adjusting it in the gradually decreasing direction.

[0326] 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 between the wireless charging receiving coil and the wireless charging transmitting coil, obtaining the transmission power adjustment P2 of the wireless charging transmitting coil with reference to formula (III), and obtaining the weight value F of P2 with reference to formula (V). P2 Or, obtaining the input voltage adjustment V2 of the wireless charging transmitting coil with reference to formula (IV), and obtaining the weight value F of V2 with reference to formula (VI). V2 . Record P2 and F P2 and set them into the second mapping data group, or record V2 and F V2 and set them into the second mapping data group. Determine whether F P2 is greater than F P1 . If so, when calling the mapping data, the second mapping data group is called prior to the first mapping data group; otherwise, the first mapping data group is called prior to the second mapping data group.

[0327] In one embodiment, the method further includes: determining whether F P1 is greater than a third set value. If so, set the first mapping data group 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.

[0328] In one embodiment, the method further includes: adjusting the set value of k p or k v to adjust the replacement speed of the priority order when the first mapping data group and the second mapping data group are called.

[0329] The above-provided self-learning control method for a long-distance wireless charging system based on a relay coil compares the characteristic value (the fifth characteristic value Q5) of the transmitting coil at a certain moment with the characteristic value (the second characteristic value Q2) of the transmitting coil when there is a relay coil and a wireless charging receiving end exists 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 or foreign object on the relay coil. When it is determined that there is a receiving end on the relay coil, then according to the weight value F Pj or F VjCall the mapping data group where the weight value is located in descending order of the numerical value to configure the operating parameters of the wireless charging transmitting coil, and determine whether the wireless charging transmitting end receives a 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end. With such settings, in the case of long-distance charging, when the wireless charging system applying this control method performs wireless charging again, it can respond quickly, enter the wireless charging program to output energy more quickly, and improve the charging response speed and user experience.

[0330] According to the above method, the present application also provides another control method that applies the learning results of the above method.

[0331] A self-learning 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 the first input voltage, the transmitting frequency as the first transmitting frequency, the duty cycle of the first transmitting frequency as the first duty cycle, obtaining the fourth characteristic value Q4 of the wireless charging transmitting coil at time T4, and determining whether the fourth characteristic value Q4 is less than or equal to the second characteristic value Q2. If so, set the transmitting power of the wireless charging transmitting coil as the first PING power, or set the input voltage of the wireless charging transmitting coil as the first PING voltage, and determine whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If not, adjust the transmitting power of the wireless charging transmitting coil to P1 with reference to the following formula (III), or adjust the input voltage of the wireless charging transmitting coil to V1 with reference to the following formula (IV):

[0332] P i =P ping +△P×m. (III)

[0333] V i =V ping +△V×m. (IV)

[0334] 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 transmitting 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 then determine again whether the wireless charging transmitting end receives a charging request signal sent by the wireless charging receiving end. If so, obtain the weight value F of P1 with reference to the following formula (V) P1 , obtain the weight value F of V1 with reference to the following formula (VI) V1, 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.

[0335]

[0336]

[0337] Among them, 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , j is a positive integer. The second eigenvalue Q2 is stored in the wireless charging system and is the eigenvalue 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 distance D1. The first PING power and / or the first PING voltage are stored in the wireless charging system and are the PING parameters 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 distance D1. The moment T4 is a moment point on the set period. The eigenvalue is the oscillation decay coefficient of the voltage of the wireless charging transmitting coil, or the oscillation decay coefficient of the current, or the oscillation decay coefficient of the power. Record and set D1, P1, F P1 , Q2 as the first mapping data group, or record and set D1, V1, F V1 , Q2 as the first mapping data group.

[0338] In one embodiment, before determining whether the fourth eigenvalue Q4 is less than or equal to the second eigenvalue Q2, the method further includes obtaining the distance D1 between the relay coil and the wireless charging transmitting coil. The method includes: setting the transmission frequency of the wireless charging transmitting coil as the second transmission frequency, and obtaining the average eigenvalue q x0 of the wireless charging transmitting coil within the second time period from T x1 to T x . The second transmission frequency is greater than the first transmission frequency. Obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (2):

[0339] D1 = b × e ax (2)

[0340] Among them, a and b are constants, and the value of x is the value of the average eigenvalue q x .

[0341] In one embodiment, the method further includes: retrieving a second eigenvalue Q2, a first PING power, and / or a first PING voltage corresponding to the distance D1 according to the distance D1.

[0342] 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 the calculated value in the wireless charging system for retrieval when used next time.

[0343] In one embodiment, the method further includes a method for obtaining a second eigenvalue Q2, the method including: continuously collecting the eigenvalues q of n wireless charging transmitting coils at a set period within a first time period from T0 to T1 in the same environment as when obtaining the fourth eigenvalue Q4 n , and obtaining a first eigenvalue Q1 with reference to formula (I):

[0344] Q1 = [(q1 + q 2+ q 3+ ... + q n ) - (q min + q max )] / (n - 2) (I)

[0345] wherein, q min is the minimum value among the eigenvalues q of n wireless charging transmitting coils n . q max is the maximum value among the eigenvalues q of n wireless charging transmitting coils n . 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, it is determined that there is a relay coil in the wireless charging system, and the second eigenvalue Q2 of the wireless charging transmitting coil is obtained at time T2. Time T2 is any time within a second time period other than the first time period from T0 to T1. The second time period from T x0 to T x1 is any time period within a second time period other than the first time period from T0 to T1. Store the second eigenvalue Q2 in the wireless charging system for retrieval when used next time.

[0346] 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 it in the wireless charging system for retrieval when used next time. Time T3 is any time within a second time period other than the first time period from T0 to T1. The first set value is greater than the second set value.

[0347] In one embodiment, the method further includes: determining whether a fifth eigenvalue Q5 is less than or equal to a third eigenvalue Q3 or a second set value; if so, controlling an alarm indicator light in the wireless charging system to turn on or a buzzer to sound.

[0348] In one embodiment, 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 a wireless charging transmitting coil and a relay coil, and storing same in the wireless charging system for retrieval when used next time.

[0349] The above-provided self-learning control method for a long-distance wireless charging system based on a relay coil compares a characteristic value (a fourth eigenvalue Q4) of a transmitting coil at a certain moment with a characteristic value (a second eigenvalue Q2) of a transmitting coil in a situation where there is a relay coil and a wireless charging receiving end exists on the relay coil, and sets PING parameters for the transmitting coil under a condition of a distance D1 to see if a charging request signal can be obtained. If not, the transmitting power or input voltage of the transmitting coil is gradually adjusted through a set formula until a charging request signal sent by the receiving end is obtained. After receiving the charging signal, a weight value of the parameters in this state is calculated as a mark for the order of mobilization. With such settings, in the case of long-distance charging, when the wireless charging system applying this control method performs wireless charging again, it can respond quickly, enter the wireless charging program to output energy more quickly, and improve the charging response speed and user experience.

[0350] In addition, according to the above content, the present application also provides a wireless charger.

[0351] A wireless charger includes a computer storage medium, and a computer program is stored on the computer storage medium. When the program is executed by a processor, the method in any one of the above embodiments is implemented. It can facilitate the program upgrade and transformation of the wireless charger.

[0352] In addition, the present application also provides a computer storage medium.

[0353] A computer storage medium, on which a computer program is stored. When the program is executed by a processor, the method in any one of the above embodiments is implemented. It can facilitate the program upgrade and transformation of the wireless charger.

[0354] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A self - learning control method for a long - distance wireless charging system based on a relay coil, characterized in that, The wireless charging system stores a number of mapped data groups that can be read and called by a computer processor; The data in the said mapping data group includes: D1, P i , F Pj , Q2, or D1, V i , F Vj , Q2; D1 is the distance between the relay coil and the wireless charging transmitting coil; The described P i is the transmission power of the wireless charging transmitting coil; The V i is the input voltage of the wireless charging transmitting coil; The said F Pj is the weight value of the mapping data group where the said F Pj is located; The said F Vj is the weight value of the mapping data group where the said F Vj is located; where i is a positive integer; j is a positive integer; Q2 is the characteristic value of the wireless charging transmitting coil when the distance between the relay coil and the wireless charging transmitting coil is D1; 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 a second eigenvalue Q2. If so, the mapping data groups where the weight values F Pj or F Vj are located are sequentially called in the order from large to small of the numerical values to configure the operating parameters of the wireless charging transmitting coil, and determining 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 requirements of the wireless charging receiving end to charge the wireless charging receiving end; The moment T5 is any moment when the wireless charging transmitting coil starts to work; 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.

2. The self-learning control method for a long-distance wireless charging system based on a relay coil according to claim 1, wherein When it is determined that the wireless charging transmitter has received the charging request signal sent by the wireless charging receiver, increase the weight value F with reference to formula (V) Pj , increase the weight value F with reference to formula (VI) Vj , and adjust the transmission power of the wireless charging transmitter coil according to the requirements of the wireless charging receiver to charge the wireless charging receiver; where k p and k v are magnification factors, L p and L v are constants, △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, F Pj , F P(j-1) , F Vj and F V(j-1) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , and j is a positive integer.

3. The self-learning control method of the long-distance wireless charging system based on a relay coil according to claim 1 or 2, characterized in that 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, determine the weight value F in the mapping data group called at this time Pj or F Vj whether it is the maximum weight value F Pmax or F Vmax , if not, then modify and set the maximum weight value F Pmax to Modify and set the maximum weight value F Vmax to 4. The self-learning control method of the long-distance wireless charging system based on a relay coil according to claim 1 or 2, characterized in that The method further includes: When all the mapped data groups have been called and the wireless charging transmitting end still has not received the charging request signal sent by the wireless charging receiving end, set the transmitting power of the wireless charging transmitting coil to the first PING power, or set the input voltage of the wireless charging transmitting coil to the first PING voltage; and determine whether the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end. If not, adjust the transmitting power of the wireless charging transmitting coil to P1 with reference to the following formula (three), or adjust the input voltage of the wireless charging transmitting coil to V1 with reference to the following formula (four): P i = P ping + ΔP × m; (Three) V i = V ping + ΔV × m; (Four) Among them, P i is the actual power value of the wireless charging transmitting coil, V i is the actual input voltage value of the wireless charging transmitting coil, P ping is the first PING power, V ping is the first PING voltage, △P is the minimum adjustment change unit of the transmitting 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 the charging request signal sent by the wireless charging receiving end. If so, the weight value F of P1 is obtained with reference to the following formula (five) P1 , the weight value F of V1 is obtained with reference to the following formula (six) V1 , and 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; Among them, 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , j is a positive integer; Record and set the D1, P1, F P1 , Q2 as the first mapping data group, or record and set the D1, V1, F V1 , Q2 as the first mapping data group.

5. The self-learning control method of the long-distance wireless charging system based on a relay coil according to claim 4, characterized in that The method further includes: Set m to be a positive number and adjust it in the gradually increasing direction, and determine whether m is greater than or equal to the fourth set value. If so, set m to be a negative number and adjust it in the gradually decreasing direction.

6. The self-learning control method for a long-distance wireless charging system based on a relay coil according to claim 4, wherein The method further includes: When the distance D1 between the wireless charging transmitting coil and the relay coil is constant, change the relative position of the wireless charging receiving coil and the wireless charging transmitting coil, and adjust the transmitting power of the wireless charging transmitting coil to P2 with reference to formula (III), and obtain the weight value F of P2 with reference to formula (V). P2 Alternatively, obtain the input voltage adjustment V2 of the wireless charging transmitting coil with reference to formula (IV), and obtain the weight value F of V2 with reference to formula (VI). V2 ; Record and set the P2 and F P2 to the second mapping data group, or record and set the V2 and F V2 to the second mapping data group; Determine whether the F P2 is greater than the F P1 . If so, when calling the mapping data, the second mapping data group is called prior to the first mapping data group; otherwise, the first mapping data group is called prior to the second mapping data group.

7. A self-learning control method for a long-distance wireless charging system based on a relay coil, characterized in that, The method includes: Set 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, obtain the fourth characteristic value Q4 of the wireless charging transmitting coil at the moment T4, and determine whether the fourth characteristic value Q4 is less than or equal to the second characteristic value Q2. If so, set the transmitting power of the wireless charging transmitting coil to the first PING power, or set the input voltage of the wireless charging transmitting coil to the first PING voltage, and determine whether the wireless charging transmitting end has received the charging request signal sent by the wireless charging receiving end. If not, adjust the transmitting power of the wireless charging transmitting coil to P1 with reference to the following formula (three), or adjust the input voltage of the wireless charging transmitting coil to V1 with reference to the following formula (four): P i = P ping + △P × m; (Three) V i = V ping + ΔV × m; (Four) Among them, P i is the actual power value of the wireless charging transmitting coil, V i is the actual input voltage value of the wireless charging transmitting coil, P ping is the first PING power, V ping is the first PING voltage, △P is the minimum adjustment change unit of the transmitting 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 the charging request signal sent by the wireless charging receiving end. If so, the weight value F of P1 is obtained with reference to the following formula (five) P1 , the weight value F of V1 is obtained with reference to the following formula (six) V1 , and 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; where 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) are weight values and F P(j-1) is the basic weight value of F Pj , F V(j-1) is the basic weight value of F Vj , and j is a positive integer; The second characteristic value Q2 is stored in the wireless charging system and is the 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 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 moment T4 is a moment point on a set period; The eigenvalue is the oscillation attenuation coefficient of the voltage of the wireless charging transmitting coil, or the oscillation attenuation coefficient of the current, or the oscillation attenuation coefficient of the power; Record the D1, P1, F P1 , Q2 and set them as the first mapping data group, or record the D1, V1, F V1 , Q2 and set them as the first mapping data group.

8. The self-learning control method of the long-distance wireless charging system based on a relay coil according to claim 7, characterized in that Before determining whether the fourth eigenvalue Q4 is less than or equal to the second eigenvalue Q2, the method further includes obtaining the distance D1 between the relay coil and the wireless charging transmitting coil. The method includes: Set the transmission frequency of the wireless charging transmitting coil to the second transmission frequency, and obtain the average eigenvalue q of the wireless charging transmitting coil within the second time period from T x0 to T x1 ; x ; The second transmission frequency is greater than the first transmission frequency; Obtain the distance D1 between the wireless charging transmitting coil and the relay coil with reference to formula (2): D1 = b × e ax (2) Wherein, a and b are constants, and the value of x is the average eigenvalue q x value.

9. The self-learning control method of the relay-coil-based long-distance wireless charging system according to claim 7 or 8, characterized in that The method further includes a method for obtaining the second eigenvalue Q2, and the method includes: in the same environment as that for obtaining the fourth eigenvalue Q4, continuously collecting n eigenvalues 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 eigenvalue Q1 with reference to formula (1): Q1 = [(q1 + q 2+ q 3+ ... + q n )) - (q min + q max )] / (n - 2) (1) Wherein, The said q min is the eigenvalue q of n said wireless charging transmitting coils n and is the minimum value among them; The q max is the maximum value of the eigenvalue q of the n wireless charging transmitting coils n among them; The n is a positive integer greater than or equal to 3; Determine whether the first eigenvalue Q1 is less than or equal to the first set value. If so, 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 time T2; The time T2 is any time within the first time period from non-T0 to T1; T x0 to T x1 The second time period from x0 to x1 is any time period within the first time period from T0 to T1; Store the second eigenvalue Q2 in the wireless charging system for retrieval when used next time.

10. A wireless charger includes a computer storage medium, and a computer program is stored on the computer storage medium. It is characterized in that, When the program is executed by a processor, it implements the self-learning control method according to any one of claims 1-9.

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