Intelligent boosting device and method

Abstract

The invention discloses an intelligent boosting device and method. The intelligent boosting device comprises a battery pack, an intelligent pump module and a load; the anode of the battery pack is connected with the first input end of the intelligent pump module, the cathode of the battery pack is connected with the second input end of the intelligent pump module, the first output end of the intelligent pump module is connected with the first end of the load, and the second output end of the intelligent pump module is connected with the second end of the load; the communication end of the battery pack is connected with the communication end of the intelligent pump module. The battery pack is used for conveying electric energy to a load through the intelligent pump module; the intelligent pump module is used for obtaining the battery cycle index of the battery pack and the output voltage and the output current of the battery pack outputting electric energy, and when the output voltage is smaller than the threshold voltage, the output voltage of the battery pack is boosted and then transmitted to the load according to the output voltage, the output current and the battery cycle index. The output voltage fluctuation amplitude of the battery pack can be effectively reduced, and the reliability of the power supply process is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of batteries, and in particular, to an intelligent boost device and method. Background Art

[0002] Sodium-ion batteries have become an ideal choice for low-speed electric vehicles due to the rich sodium resources, low-temperature characteristics, and safety advantages.

[0003] In the prior art, a traditional battery power supply system directly supplies the battery voltage to the load. When the battery voltage gradually decreases during use, when the battery voltage drops below the minimum operating voltage of the load, the load will not be able to operate normally or the efficiency will drop significantly. The single-cell voltage range of sodium-ion batteries is 4V (fully charged) to 2V (cut-off discharge), and the voltage drop reaches 50%, far exceeding that of lithium-ion batteries (about 33%). When sodium-ion batteries are applied to a traditional battery power supply system to directly supply the battery voltage to the load, the output voltage fluctuation of the series battery pack of sodium-ion batteries will be more significant, seriously affecting the normal operation and working efficiency of the load, and a load with a wide voltage input range needs to be matched. The existing solution is to modify the materials of sodium-ion batteries, such as high-voltage electrolytes and optimized cathode structures. Although the battery performance can be improved, the cost is high and it is difficult to completely solve the voltage fluctuation problem. Summary of the Invention

[0004] The present invention provides an intelligent boost device and method to effectively reduce the output voltage fluctuation amplitude and improve the reliability of the power supply process.

[0005] In a first aspect, an embodiment of the present invention provides an intelligent boost device, which includes a battery pack, an intelligent pump module, and a load;

[0006] The positive electrode of the battery pack is connected to the first input end of the intelligent pump module, the negative electrode of the battery pack is connected to the second input end of the intelligent pump module, the first output end of the intelligent pump module is connected to the first end of the load, and the second output end of the intelligent pump module is connected to the second end of the load; the communication end of the battery pack is connected to the communication end of the intelligent pump module;

[0007] The battery pack is used to transmit electrical energy to the load through the intelligent pump module;

[0008] The intelligent pump module is used to obtain the battery cycle number of the battery pack, the output voltage and output current of the electrical energy output by the battery pack, and when the output voltage is less than the threshold voltage, increase the output voltage of the battery pack according to the output voltage, the output current, and the battery cycle number and then transmit it to the load.

[0009] Optionally, the intelligent pump module includes a main control unit, a boost unit, and a voltage acquisition unit;

[0010] The second input end of the intelligent pump module is directly connected to the second output end of the intelligent pump module through a cable; the first end of the boost unit serves as the first input end of the intelligent pump module, the second end of the boost unit serves as the first output end of the intelligent pump module, and the third end of the boost unit is connected to the main control unit; the first end of the voltage acquisition unit is connected to the first end of the boost unit, and the second end of the voltage acquisition unit is connected to the main control unit;

[0011] The voltage acquisition unit is used to acquire the output voltage and the output current and send them to the main control unit; the boost unit is used to boost the output voltage and then deliver it to the load;

[0012] The main control unit is used to control the boost unit to increase the output voltage of the battery pack when the output voltage is less than the threshold voltage, according to the output voltage, the current response of the output current, and the life compensation based on the number of battery cycles.

[0013] Optionally, the main control unit is used to control the output voltage of the boost unit to be the preset minimum boost voltage when the output current is greater than or equal to the preset current, and when the number of battery cycles increases by a preset number each time, reduce the voltage boost amplitude of the battery pack by a preset percentage, and the preset percentage is greater than 3% and less than 5%.

[0014] Optionally, the output voltage of the boost unit satisfies:

[0015]

[0016] Wherein, V boost is the output voltage of the boost unit, I is the output current, n is the number of battery cycles, and V ref is the preset reference voltage, and V in is the output voltage.

[0017] Optionally, the intelligent pump module further includes a communication unit;

[0018] The first end of the communication module serves as the communication end of the intelligent pump module, and the second end of the communication unit is connected to the main control unit;

[0019] The communication unit is used to collect the number of battery cycles and send the number of battery cycles to the main control unit.

[0020] Optionally, the intelligent pump module further includes a temperature acquisition unit;

[0021] The output end of the temperature acquisition unit is connected to the main control unit. The temperature acquisition unit is used to collect the temperature of the boost unit and the ambient temperature, and send the temperature of the boost unit and the ambient temperature to the main control unit;

[0022] The main control unit is further configured to control the frequency of the PWM signal sent to the boost unit to decrease and control the output voltage of the boost unit to decrease when the temperature of the boost unit or the ambient temperature is greater than a first temperature threshold;

[0023] The main control unit is further configured to control the frequency of the PWM signal sent to the boost unit to increase and control the output voltage of the boost unit to increase when the temperature of the boost unit or the ambient temperature is less than a second temperature threshold.

[0024] Optionally, when the output voltage is less than the threshold voltage and the output voltage is within the first boost interval, the intelligent pump module is configured to maintain the slope of the increased output voltage between a first slope and a second slope;

[0025] When the output voltage is less than the threshold voltage and the output voltage is within the second boost interval, the slope of the increased output voltage is maintained between a third slope and the second slope.

[0026] Optionally, the first slope, the second slope, and the third slope are all less than 0, and the third slope is greater than the second slope, and the second slope is greater than the first slope.

[0027] Optionally, the first boost interval is (U1, U2), the second boost interval is [U2, U3), and U1 > U2 > U3.

[0028] Optionally, the rated output voltage of the battery pack is NV;

[0029] When n ≤ 1500, U1 = N(1 - 0.00005n); when n > 1500, U1 = N(0.925 - 0.00003(n - 1500));

[0030] U2 = N1(1 - 0.00004n), U3 = N2V; where N > N1 > N2, and n is the number of battery cycles;

[0031] The intelligent pump module is further configured to control the increased output voltage to be greater than or equal to 30V when the output voltage is within the second boost interval.

[0032] Optionally, N is 48, N1 is 36, and N2 is 25.

[0033] Optionally, the intelligent boost device further includes a power supply and a boost voltage acquisition module;

[0034] The first end of the power supply is connected to the first input end of the intelligent pump module, the second end of the power supply is connected to the power supply end of the intelligent pump module, and the power supply is used to supply electrical energy to the intelligent pump module;

[0035] The first end of the boost voltage acquisition module is connected to the first output end of the intelligent pump module, the second end of the boost voltage acquisition module is connected to the feedback end of the intelligent pump module, and the boost voltage acquisition module is used to collect the increased voltage output by the intelligent pump module and feedback it to the intelligent pump module.

[0036] Optionally, the battery pack is a sodium battery pack, and the load is a controller of an electric two-wheeler.

[0037] In a second aspect, an embodiment of the present invention further provides an intelligent boost method, which is executed by the intelligent boost device according to any embodiment of the present invention. The intelligent boost method includes:

[0038] Obtain the battery cycle count of the battery pack, the output voltage and output current of the electrical energy output by the battery pack;

[0039] When the output voltage is less than the threshold voltage, increase the output voltage of the battery pack according to the output voltage, the output current and the battery cycle count and then deliver it to the load.

[0040] The present invention provides an intelligent boost device and method. The intelligent boost device includes a battery pack, an intelligent pump module and a load. An intelligent pump module is added between the battery pack and the load. The positive electrode of the battery pack is connected to the first input end of the intelligent pump module, and the negative electrode of the battery pack is connected to the second input end of the intelligent pump module, so that the battery pack can deliver electrical energy to the load through the intelligent pump module, so as to effectively reduce the output voltage fluctuation amplitude of the battery pack through the intelligent pump module. The first output end of the intelligent pump module is connected to the first end of the load, and the second output end of the intelligent pump module is connected to the second end of the load. The communication end of the battery pack is connected to the communication end of the intelligent pump module. The intelligent pump module can obtain the battery cycle count of the battery pack, the output voltage and output current of the electrical energy output by the battery pack, and when the output voltage is less than the threshold voltage, increase the output voltage of the battery pack according to the output voltage, the output current and the battery cycle count and then deliver it to the load, reducing the voltage fluctuation amplitude received by the load. Since the output voltage increase is controlled by combining the battery cycle attenuation characteristic and the real-time output current feedback, the collaborative optimization of efficient energy output and battery life can be realized, and the output voltage fluctuation amplitude can be effectively reduced, improving the reliability of the power supply process. Description of the Drawings

[0041] Figure 1 It is a schematic structural diagram of an intelligent boost device provided in an embodiment of the present invention;

[0042] Figure 2 It is a schematic structural diagram of another intelligent boost device provided in the embodiment of the present invention;

[0043] Figure 3 It is a working flowchart of the intelligent pump module provided in the embodiment of the present invention;

[0044] Figure 4 It is a schematic diagram of the intelligent boost process of the intelligent boost device provided in the embodiment of the present invention;

[0045] Figure 5 It is a schematic structural diagram of yet another intelligent boost device provided in the embodiment of the present invention;

[0046] Figure 6 It is a flowchart of an intelligent boost method in the embodiment of the present invention. Detailed implementation manners

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0048] Currently, in a traditional battery-powered system, the battery voltage is directly supplied to the load. As the usage time gradually decreases, when the battery voltage drops below the minimum operating voltage of the load, the load will either not work properly or its efficiency will drop significantly.

[0049] The embodiment of the present invention provides an intelligent boost device to solve the above problems. Figure 1 It is a schematic structural diagram of an intelligent boost device provided in the embodiment of the present invention. As Figure 1 shown, the intelligent boost device includes a battery pack 110, an intelligent pump module 120, and a load 130.

[0050] The positive electrode of the battery pack 110 is connected to the first input end of the intelligent pump module 120, the negative electrode of the battery pack is connected to the second input end of the intelligent pump module 120, the first output end of the intelligent pump module 120 is connected to the first end of the load 130, and the second output end of the intelligent pump module 120 is connected to the second end of the load 130; the communication end of the battery pack 110 is connected to the communication end of the intelligent pump module 120; the battery pack 110 is used to deliver electrical energy to the load 130 through the intelligent pump module 120; the intelligent pump module 120 is used to obtain the battery cycle count of the battery pack 110, the output voltage and output current of the electrical energy output by the battery pack 110, and when the output voltage is less than the threshold voltage, raise the output voltage of the battery pack 110 according to the output voltage, output current, and battery cycle count and then deliver it to the load 130.

[0051] Among them, the battery pack 110 delivers electrical energy to the load 130 through the intelligent pump module 120. However, as the battery pack 110 continuously discharges, the output voltage will drop. Moreover, as the number of battery cycles increases, the drop in the output voltage of the battery pack 110 will be more obvious. In the embodiment of the present invention, the overall circuit structure is not changed, and only the intelligent pump module 120 is added between the battery pack 110 and the load 130. Through the intelligent pump module 120, the output voltage of the battery pack 110 can be increased and then delivered to the load 130 to effectively reduce the amplitude of the output voltage fluctuation. The threshold voltage can be set according to the rated output voltage of the battery pack 110 and the operating voltage range of the load 130, and the threshold voltage can be set within the range greater than the minimum operating voltage of the load 130 and less than the rated output voltage of the battery pack 110. Optionally, the battery pack 110 can be a lithium-ion battery, a sodium-ion battery, a lead-acid battery, etc., and the load 130 can be various types of electrical equipment, which are not limited in the embodiment of the present invention.

[0052] Specifically, the positive electrode of the battery pack 110 is connected to the first input end of the intelligent pump module 120, the negative electrode of the battery pack is connected to the second input end of the intelligent pump module 120, and the communication end of the battery pack 110 is connected to the communication end of the intelligent pump module 120. The communication end of the intelligent pump module 120 can obtain the number of battery cycles from the battery pack 110 so as to feedback control the output voltage to increase according to the number of battery cycles, the output voltage and the output current of the battery pack 110. The second output end of the intelligent pump module 120 is connected to the second end of the load 130; the communication end of the battery pack 110 is connected to the communication end of the intelligent pump module 120; the battery pack 110 can deliver electrical energy to the load 130 through the intelligent pump module 120. After the intelligent pump module 120 receives the electrical energy output by the battery pack 110, the intelligent pump module 120 starts to work. The intelligent pump module 120 can obtain the output voltage and the output current of the electrical energy output by the battery pack 110. When it is detected that the output voltage is greater than or equal to the threshold voltage, no boosting operation is performed, and the electrical energy output by the battery pack 110 is directly delivered to the load 130. When the output voltage is less than the threshold voltage, the communication end of the intelligent pump module 120 obtains the number of battery cycles of the battery pack 110, and the output voltage of the battery pack 110 is increased in real time according to the output voltage, the output current and the number of battery cycles and then delivered to the load 130. Since the intelligent pump module 120 combines the battery cycle attenuation characteristic and the real-time output current feedback to control the output voltage to increase, it can realize the coordinated optimization of high-efficiency energy output and battery life, and can effectively reduce the amplitude of the output voltage fluctuation, improve the reliability of the power supply process, and provide guarantee for the normal operation of the load 130. The embodiment of the present invention solves the technical problem that the electrical equipment cannot work normally due to the reduction of the battery voltage in the prior art, and the cost is relatively low, and there is no need to transform the battery.

[0053] An embodiment of the present invention provides an intelligent boost device. The intelligent boost device includes a battery pack, a smart pump module, and a load. A smart pump module is added between the battery pack and the load. The positive electrode of the battery pack is connected to the first input end of the smart pump module, and the negative electrode of the battery pack is connected to the second input end of the smart pump module, so that the battery pack can transmit electrical energy to the load through the smart pump module to effectively reduce the output voltage fluctuation amplitude of the battery pack through the smart pump module. The first output end of the smart pump module is connected to the first end of the load, and the second output end of the smart pump module is connected to the second end of the load. The communication end of the battery pack is connected to the communication end of the smart pump module. The smart pump module can obtain the battery cycle times of the battery pack, the output voltage and output current of the electrical energy output by the battery pack, and when the output voltage is less than the threshold voltage, raise the output voltage of the battery pack and transmit it to the load according to the output voltage, output current, and battery cycle times. Since the output voltage is raised by combining the battery cycle attenuation characteristics and real-time output current feedback control, the collaborative optimization of high-efficiency energy output and battery life can be achieved, the output voltage fluctuation amplitude can be effectively reduced, and the reliability of the power supply process can be improved.

[0054] To further control the output voltage of the battery pack, an embodiment of the present invention also provides another intelligent boost device. Figure 2 As shown in the structure schematic diagram of another intelligent boost device provided in the embodiment of the present invention, as Figure 2 shown, the smart pump module 120 includes a main control unit 121, a boost unit 122, and a voltage acquisition unit 123.

[0055] The second input end of the smart pump module 120 is directly connected to the second output end of the smart pump module 120 through a cable; the first end of the boost unit 122 serves as the first input end of the smart pump module 120, the second end of the boost unit 122 serves as the first output end of the smart pump module 120, and the third end of the boost unit 122 is connected to the main control unit; the first end of the voltage acquisition unit 123 is connected to the first end of the boost unit, and the second end of the voltage acquisition unit 123 is connected to the main control unit.

[0056] The voltage acquisition unit 123 is used to acquire the output voltage and output current and send them to the main control unit 121; the boost unit 122 is used to raise the output voltage and then transmit it to the load 130.

[0057] The main control unit 121 is used to control the boost unit 122 to raise the output voltage of the battery pack 110 according to the output voltage, the current response of the output current, and the life compensation based on the battery cycle times when the output voltage is less than the threshold voltage.

[0058] Among them, the second input terminal of the intelligent pump module 120 is directly connected to the second output terminal of the intelligent pump module 120 through a cable, that is, the negative pole of the battery pack 110 is directly connected to the second end of the load 130, and the intelligent pump module 120 boosts the output voltage of the positive pole of the battery pack 110.

[0059] Specifically, the intelligent pump module 120 is provided with a main control unit 121, a boost unit 122, and a voltage acquisition unit 123. The main control unit 121 acquires the output voltage and output current of the battery pack 110 through the voltage acquisition unit 123, and performs a boost operation through the boost unit 122. Specifically, when the output voltage is less than the threshold voltage, the main control unit 121 obtains the battery cycle count, and based on the output voltage, the current response of the output current, and the life compensation method based on the battery cycle count, sends a PWM control signal to the boost unit 122 to control the boost unit 122 to boost the output voltage of the battery pack 110.

[0060] Furthermore, the main control unit 121 is used to control the output voltage of the boost unit 122 to be the preset minimum boost voltage when the output current is greater than or equal to the preset current, and when the battery cycle count increases by a preset number of times, the voltage boost amplitude of the battery pack 110 is reduced by a preset percentage, and the preset percentage is greater than 3% and less than 5%.

[0061] Among them, after the boost unit 122 boosts the output voltage of the battery pack 110, the output voltage of the boost unit 122 is the output voltage of the boosted battery pack 110. Different voltage intervals can be set according to the output voltage of the boost unit 122, and the corresponding preset minimum boost voltages for different voltage intervals are different. Exemplarily, the voltage interval includes a first boost interval, the minimum voltage of the first boost interval is 38V, then the preset minimum boost voltage of the first boost interval is 38V, the preset current can be 20A, and when the main control unit 121 detects that the output current of the battery pack 110 ≥ 20A and the output voltage of the boost unit 122 is within the first boost interval, it forcibly controls the output voltage of the boost unit 122 to be the preset minimum boost voltage. When the main control unit 121 detects that the output current of the battery pack 110 < 20A, the voltage boost amplitude of the battery pack 110 can be smoothly adjusted according to a 1.5th power curve.

[0062] In addition, the main control unit 121 can also reduce the voltage boost amplitude of the battery pack 110 by a preset percentage when the battery cycle count increases by a preset number of times, and the preset percentage is greater than 3% and less than 5%. For example, when the battery pack 110 is a sodium battery, the preset number of times is 1000 times. When the battery cycle count increases by 1000 times each time, the voltage boost amplitude of the battery pack 110, that is, the output voltage of the boost unit 122, is reduced by a preset percentage, so as to match the sodium battery capacity attenuation rate. Preferably, the preset percentage is 4%.

[0063] In the embodiments of the present invention, a dynamic boost mathematical model is introduced. The voltage amplitude increased by the battery pack 110 is jointly regulated by the current-life dual factors. When expressing the output voltage of the boost unit 122 with a formula, the output voltage of the boost unit 122 satisfies:

[0064]

[0065] Where V boost is the output voltage of the boost unit 122, I is the output current, n is the number of battery cycles, V ref is the preset reference voltage, and V in is the output voltage.

[0066] In the above formula, when the output current I of the battery pack 110 is less than 20 A, the voltage amplitude increased by the battery pack 110 can be smoothly adjusted according to a 1.5th power curve. When the number of battery cycles increases by 1000 times, the voltage amplitude increased by the battery pack 110, that is, the output voltage of the boost unit 122, decreases by 4% to match the sodium battery capacity attenuation rate. In addition, the output voltage V boost of the boost unit 122 compared to the output voltage V in of the battery pack 110 has a boost amplitude of The boost amplitude is controlled by the output current I of the battery pack 110 and the number of battery cycles n. Therefore, controlling the output voltage V boost of the boost unit 122 through the above formula has the following advantages: By introducing a 1.5th power current response function, a buffer zone is established near the threshold to reduce the attenuation amplitude; dynamic attenuation compensation is increased, and the threshold is automatically adjusted according to the number of cycles to ensure that the requirements are still met after attenuation.

[0067] In addition, through this voltage control method, further combining the battery cycle attenuation characteristics with the real-time output current feedback to control the output voltage increase, the collaborative optimization of high-efficiency energy output and battery life can be achieved, and the output voltage fluctuation amplitude can be effectively reduced, improving the reliability of the power supply process.

[0068] Optionally, referring to Figure 2 , the intelligent pump module 120 further includes an overcurrent protection unit. The overcurrent protection unit is connected to the boost unit 122. The overcurrent protection unit can detect current abnormalities in the boost unit 122 in a timely manner, and then activate the protection mechanism, so that the circuit can quickly cut off the faulty part and avoid catastrophic consequences caused by missing faults.

[0069] Continuing to refer to Figure 2 , the intelligent pump module 120 further includes a communication unit 124.

[0070] The first end of the communication module 124 serves as the communication end of the intelligent pump module 120, and the second end of the communication unit 124 is connected to the main control unit 121. The communication unit 124 is used to collect the battery cycle count and send the battery cycle count to the main control unit 124.

[0071] Specifically, the first end of the communication module 124 serves as the communication end of the intelligent pump module 120 and is connected to the communication end of the battery pack 110. The communication module 124 can communicate with the battery pack 110, parse the battery cycle count from the communication message, and send the battery cycle count to the main control unit 121. The larger the battery cycle count, the higher the aging degree of the battery pack 110. The main control unit 121 can combine the cycle attenuation characteristics of the battery pack 110 and the real-time output current to feedback control the output voltage to increase, realizing the collaborative optimization of high-efficiency energy output and battery life. In addition, for different types and different rated output voltage battery packs 110, the cycle attenuation characteristics of the battery pack 110 are different.

[0072] Optionally, the communication end of the battery pack 110 is also connected to the communication end of the load 130. The communication end of the load 130 can obtain information such as the remaining power of the battery pack 110 from the communication end of the battery pack 110.

[0073] In the embodiment of the present invention, in response to the temperature change of the intelligent pump module 120, the boost frequency is adaptively changed by collecting the ambient temperature and the temperature of the boost unit 122 in real time. Continuing to refer to Figure 2 The intelligent pump module 120 further includes a temperature acquisition unit 125.

[0074] The output end of the temperature acquisition unit 125 is connected to the main control unit. The temperature acquisition unit 125 is used to collect the temperature of the boost unit 122 and the ambient temperature, and send the temperature of the boost unit 122 and the ambient temperature to the main control unit 121.

[0075] The main control unit 121 is further configured to control the frequency of the PWM signal sent to the boost unit 122 to decrease and control the output voltage of the boost unit 122 to decrease when the temperature of the boost unit 122 or the ambient temperature is greater than the first temperature threshold.

[0076] The main control unit 121 is further configured to control the frequency of the PWM signal sent to the boost unit 122 to increase and control the output voltage of the boost unit 122 to increase when the temperature of the boost unit 122 or the ambient temperature is less than the second temperature threshold.

[0077] Among them, the main control unit 121 controls the boost unit 122 to work through the PWM signal. When the main control unit 121 adjusts the frequency of the PWM signal and the output voltage of the boost unit 122 in real time through the ambient temperature or the MOS temperature, the priority of the temperature of the boost unit 122 is higher than that of the ambient temperature.

[0078] Specifically, the main control unit 121 obtains the ambient temperature and the temperature of the boost unit 122 in real time through the temperature acquisition unit 125, and adjusts the frequency of the PWM signal and the output voltage change of the boost unit 122 in real time according to the ambient temperature or the MOS temperature.

[0079] The main control unit 121 has a high-temperature protection function. When the temperature of the boost unit 122 or the ambient temperature is greater than the first temperature threshold, the main control unit 121 triggers frequency-voltage coordinated derating, controls the frequency of the PWM signal sent to the boost unit 122 to decrease, and controls the output voltage of the boost unit 122 to decrease. For example, before the main control unit 121 detects that the temperature of the boost unit 122 is greater than the first temperature threshold, the frequency of the PWM signal sent by the main control unit 121 to the boost unit 122 is Fpwm, and the main control unit 121 controls the output voltage of the boost unit 122 to be Vboost. When the temperature of the boost unit 122 is greater than the first temperature threshold (for example, the first temperature threshold can be 110 °C), the main control unit 121 controls the frequency of the PWM signal sent to the boost unit 122 to become K1*Fpwm, and controls the output voltage of the boost unit 122 to be K2*Vboost. The PWM signal received by the boost unit 122 changes from Fpwm to K1*Fpwm, and the output voltage of the boost unit 122 changes from Vboost to K2*Vboost. Both K1 and K2 are coefficients. Through the above high-temperature protection process, the boost unit 122 is downscaled in frequency to prevent the boost unit 122 from being damaged due to excessive temperature, and high-temperature protection is provided for the boost unit 122 to prevent the boost unit 122 from causing an interruption in the boosting process due to damage. It is still possible to effectively reduce the amplitude of the output voltage fluctuation and further improve the reliability of the power supply process.

[0080] It should be noted that the main control unit 121 can adopt a multi-level downscaling scheme during the high-temperature protection process to further improve the reliability of the power device.

[0081] The main control unit 121 also has a low-temperature protection function. When the temperature of the boost unit 122 or the ambient temperature is less than the second temperature threshold, the main control unit 121 controls the frequency of the PWM signal sent to the boost unit 122 to increase and controls the output voltage of the boost unit 122 to increase. For example, before the main control unit 121 detects that the temperature of the boost unit 122 is less than the second temperature threshold, the frequency of the PWM signal sent by the main control unit 121 to the boost unit 122 is Fpwm, and the main control unit 121 controls the output voltage of the boost unit 122 to be Vboost. When the temperature of the boost unit 122 is less than the second temperature threshold (for example, the second temperature threshold can be -20°C), the main control unit 121 controls the frequency of the PWM signal sent to the boost unit 122 to become K3*Fpwm, controls the output voltage of the boost unit 122 to be Vboost+Vcv. The PWM signal received by the boost unit 122 changes from Fpwm to K3*Fpwm, and the output voltage of the boost unit 122 changes from Vboost to Vboost+Vcv. K3 is a coefficient, and Vcv is a compensation voltage. The compensation voltage Vcv can be set according to the equivalent series resistance (ESR) of the capacitor in the internal boost circuit of the boost unit 122. Through the above low-temperature protection process, the frequency of the boost unit 122 is increased, and the output voltage of the boost unit 122 is compensated to increase the temperature of the boost unit 122, prevent the boost unit 122 from being damaged due to too low temperature, protect the boost unit 122 from low temperature, prevent the boost unit 122 from being damaged due to low temperature and cause the interruption of the boost process, and can effectively reduce the fluctuation amplitude of the output voltage and further improve the reliability of the power supply process.

[0082] It should be noted that the boost algorithm in the intelligent boost device in the embodiment of the present invention can be obtained based on a 48V sodium battery. For example, the battery pack 110 is a 48V sodium battery. By introducing a boost algorithm related to factors such as the battery cycle number and temperature in the intelligent boost device, the temperature threshold efficiency of the intelligent pump module 120 can be effectively improved, the reliability of the intelligent pump module 120 can be improved, and the adaptability of the intelligent pump module 120 in various temperature environments can be improved.

[0083] Optionally, a Metal-Oxide-Semiconductor Field-Effect Transistor (MOS transistor for short) can be set in the boost unit 122. The MOS transistor has a boost function. When the output voltage of the battery pack 110 is greater than the threshold voltage, the main control unit 121 can control the MOS transistor to be always on and not perform boost operation. When the output voltage of the battery pack 110 is less than the threshold voltage, the control unit 121 can control the MOS transistor to perform boost operation.

[0084] Specifically, the temperature acquisition unit 125 is specifically configured to acquire the temperature of the MOS transistor and the ambient temperature. The main control unit 121 specifically obtains the ambient temperature and the temperature of the MOS transistor in real time through the temperature acquisition unit 125, controls the frequency of the PWM signal sent to the boost unit 122 according to the ambient temperature or the temperature of the MOS transistor, and controls the output voltage of the boost unit 122.

[0085] Figure 3 This is the working flowchart of the intelligent pump module provided in the embodiment of the present invention. Refer to Figure 2 and Figure 3 , after the intelligent pump module 120 in the intelligent boost device is connected to the battery pack 110, it detects whether the input voltage of the intelligent pump module 120 is greater than the threshold value. The input voltage of the intelligent pump module 120 is the output voltage of the detected battery pack 110. When the input voltage of the intelligent pump module 120 is greater than the threshold value, the MOS transistor in the boost circuit of the boost unit 122 in the intelligent pump module 120 is always on and does not boost; when the input voltage of the intelligent pump module 120 is less than or equal to the threshold value, the intelligent pump module 120 starts intelligent boosting. During the intelligent boosting process, the boost voltage is adjusted by receiving the battery cycle count; after intelligent boosting, the intelligent pump module 120 also detects the ambient temperature and the temperature of the MOS transistor in the boost circuit of the boost unit 122, and intelligently adjusts the PWM signal frequency according to the ambient temperature and the temperature of the MOS transistor in the boost circuit of the boost unit 122 to protect the boost unit 122.

[0086] The embodiment of the present invention also provides another intelligent boost device. In the embodiment of the present invention, the intelligent pump module 120 is configured to maintain the slope of the increased output voltage between the first slope and the second slope when the output voltage is less than the threshold voltage and the output voltage is in the first boost interval; maintain the slope of the increased output voltage between the third slope and the second slope when the output voltage is less than the threshold voltage and the output voltage is in the second boost interval.

[0087] Specifically, when the output voltage of the intelligent pump module 120 is less than the threshold voltage and the output voltage is in the first boost range, that is, at this time, the output voltage of the battery pack 110 has a significant drop compared to the rated output voltage, but the degree of drop is small. The slope of the increased voltage output by the intelligent pump module 120 is maintained between the first slope and the second slope. In this stage, the highest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can linearly drop with the output voltage of the battery pack 110, and the slope of the increased voltage output by the intelligent pump module 120 remains the first slope during the dropping process; the lowest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can also linearly drop independently, and the slope of the increased voltage output by the intelligent pump module 120 remains the second slope during the dropping process, and when the battery pack 110 is a 48V sodium battery pack, the lowest boost can be 38V.

[0088] When the output voltage of the intelligent pump module 120 is less than the threshold voltage and the output voltage is in the second boost range, that is, at this time, the output voltage of the battery pack 110 has a significant drop compared to the rated output voltage, and the degree of drop is large. The slope of the increased voltage output by the intelligent pump module 120 is maintained between the third slope and the second slope. In this stage, the highest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can linearly drop with the output voltage of the battery pack 110, and the slope of the increased voltage output by the intelligent pump module 120 remains the third slope during the dropping process; the lowest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can also linearly drop independently, and the slope of the increased voltage output by the intelligent pump module 120 remains the second slope during the dropping process, maintaining continuity with the voltage dropping process in the previous stage.

[0089] In the embodiments of the present invention, in different dropping stages of the output voltage of the battery pack 110, by differentially controlling the slopes of the increased voltages output by the intelligent pump module 120 in different stages to be different, to match the attenuation degree of the output voltage of the battery pack 110, and to make the increased voltages output by the intelligent pump module 120 form a smooth transition, voltage jumps can be avoided.

[0090] Optionally, the first slope, the second slope, and the third slope are all less than 0, and the third slope is greater than the second slope, and the second slope is greater than the first slope.

[0091] Figure 4 is a schematic diagram of the intelligent boosting process of the intelligent boosting device provided in the embodiments of the present invention. As Figure 4 shown, the first slope k1, the second slope k2, and the third slope k3 are all less than 0, and the third slope k3 is greater than the second slope k2, and the second slope k2 is greater than the first slope k1.

[0092] Specifically, the increased voltage output by the intelligent pump module 120 is V boost , V boost is Figure 4 the horizontal axis in in , V in is Figure 4 the vertical axis in. The increased voltage output by the intelligent pump module 120 can be within the gray area in Figure 4 and maintain a linear decrease to form continuity and prevent jumps in the increased voltage output by the intelligent pump module 120.

[0093] Optionally, as shown in Figure 4 , the first boost interval is (U1, U2), the second boost interval is [U2, U3), and U1 > U2 > U3.

[0094] Among them, the threshold voltage is U1.

[0095] Specifically, when the output voltage of the battery pack 110 is less than the threshold voltage U1 and the output voltage is within the first boost interval (U1, U2), the slope of the increased voltage output by the intelligent pump module 120 is maintained between the first slope k1 and the second slope k2. In this stage, the highest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can linearly decrease with the output voltage of the battery pack 110, and the slope of the increased voltage output by the intelligent pump module 120 remains the first slope k1 during the decrease; the lowest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can also linearly decrease independently, and the slope of the increased voltage output by the intelligent pump module 120 remains the second slope k2 during the decrease, and when the battery pack 110 is a 48V sodium battery pack, the lowest boost can be 38V.

[0096] When the output voltage of the intelligent pump module 120 is less than the threshold voltage U1 and the output voltage is in the second boost interval [U2, U3), that is, at this time, the output voltage of the battery pack 110 has a significant drop compared with the rated output voltage, and the degree of drop is large. The slope of the increased voltage output by the intelligent pump module 120 is maintained between the third slope k3 and the second slope k2, forming a difference from the increased voltage output by the intelligent pump module 120 in the first boost interval (U1, U2). In this stage, the highest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can linearly decrease with the output voltage of the battery pack 110, and the slope of the increased voltage output by the intelligent pump module 120 remains the third slope k3 during the decrease process; the lowest boost reference of the intelligent pump module 120 is that the increased voltage output by the intelligent pump module 120 can also independently linearly decrease, and the slope of the increased voltage output by the intelligent pump module 120 remains the second slope k2 during the decrease process, maintaining continuity with the voltage decrease process in the previous stage. In different voltage drop stages of the battery pack 110, by differentially controlling the slopes of the increased voltages output by the intelligent pump module 120 in different stages to be different, to match the attenuation degree of the output voltage of the battery pack 110, and to make the increased voltage output by the intelligent pump module 120 form a smooth transition, voltage jumps can be avoided, and the fluctuation amplitude of the output voltage can be effectively reduced, improving the reliability of the power supply process.

[0097] Optionally, the rated output voltage of the battery pack 110 is NV.

[0098] When n ≤ 1500, U1 = N(1 - 0.00005n); when n > 1500, U1 = N(0.925 - 0.00003(n - 1500)).

[0099] U2 = N1(1 - 0.00004n), U3 = N2V; where N > N1 > N2, and n is the number of battery cycles.

[0100] The intelligent pump module is also used to control the increased output voltage to be greater than or equal to 30V when the output voltage is in the second boost interval.

[0101] When the battery pack 110 in the embodiment of the present invention is a 48V sodium battery, in the embodiment of the present invention, optionally, N is 48, N1 is 36, and N2 is 25.

[0102] Among them, the rated output voltage of the battery pack 110 is 48V.

[0103] When the number of battery cycles n ≤ 1500, U1 = 48(1 - 0.00005n); when the number of battery cycles n > 1500, U1 = 48(0.925 - 0.00003(n - 1500)).

[0104] U2 = 36(1 - 0.00004n), U3 = 25V.

[0105] That is, in the embodiments of the present invention, the threshold voltage U1, the first boost range (U1, U2), and the second boost range [U2, U3) are related to the number of battery cycles n and change with the change of the number of battery cycles n to match the sodium battery capacity attenuation rate. By setting U3 = 25V, that is, controlling the lower limit of the increased voltage output by the intelligent pump module 120. In the second boost range [U2, U3), the increased voltage output by the intelligent pump module 120 ≥ 30V, ensuring that when the output voltage of the battery pack 110 is 25V, the voltage output by the intelligent pump module 120 is 30V, thereby protecting the load 130 and realizing the hard lower limit protection function to prevent the load 130 from not working properly or having reduced efficiency due to too low voltage.

[0106] In addition, when the output voltage of the battery pack 110 is in the first boost range (U1, U2) and the second boost range [U2, U3), the intelligent pump module 120 can also record in real time the increased voltage output by the intelligent pump module 120 to realize the dynamic voltage recording function and facilitate querying the increased voltage output by the intelligent pump module 120.

[0107] Figure 5 It is a schematic structural diagram of another intelligent boost device provided in the embodiments of the present invention, as Figure 5 shown, the intelligent boost device further includes a power supply 140 and a boost voltage acquisition module 150;

[0108] The first end of the power supply 140 is connected to the first input end of the intelligent pump module 120, and the second end of the power supply 140 is connected to the power supply end of the intelligent pump module 120. The power supply 140 is used to supply electrical energy to the intelligent pump module 120;

[0109] The first end of the boost voltage acquisition module 150 is connected to the first output end of the intelligent pump module 120, and the second end of the boost voltage acquisition module 150 is connected to the feedback end of the intelligent pump module 120. The boost voltage acquisition module 150 is used to acquire the increased voltage output by the intelligent pump module 120 and feedback it to the intelligent pump module 120.

[0110] Among them, the power supply 140, the boost voltage acquisition module 150, and the intelligent pump module 120 can be integrally formed, or the power supply 140 and the boost voltage acquisition module 150 are arranged inside the intelligent pump module 120 and are part of the whole intelligent pump module 120 to facilitate the connection between the intelligent pump module 120 and the battery pack 110 and the load 130.

[0111] Specifically, the power supply 140 can supply electrical energy to the intelligent pump module 120 to provide electrical energy for circuits such as the boost unit 122 and the main control unit 121 in the intelligent pump module 120, so as to enable the intelligent pump module 120 to boost the electrical energy output by the battery pack 110 and then output it to the load 130, effectively reducing the amplitude of the output voltage fluctuation of the battery pack 110 and improving the reliability of the power supply process. The boost voltage acquisition module 150 can acquire the increased voltage output by the intelligent pump module 120, that is, the output voltage of the boost unit 122, and feedback it to the main control unit 121 in the intelligent pump module 120, so that the main control unit 121 in the intelligent pump module 120 can compare the acquired output voltage of the boost unit 122 with the theoretical output voltage of the boost unit 122 to confirm whether the boost unit 122 has completed the boosting process, and thus can further confirm whether the boost unit 122 is damaged. For example, when the difference between the acquired output voltage of the boost unit 122 and the theoretical output voltage of the boost unit 122 is greater than the preset voltage difference, the main control unit 121 can determine that the boost unit 122 is damaged and needs to be repaired or replaced. By collecting and judging the output voltage of the boost unit 122, the damage of the boost unit 122 can be detected in time, further ensuring the reliability of the power supply process.

[0112] In any embodiment of the present invention, the battery pack 110 is a sodium battery pack, and the load 130 is a controller of an electric two-wheeler.

[0113] Specifically, the load 130 is a controller of an electric two-wheeler, that is, the intelligent boost device of the embodiment of the present invention can be applied to an electric two-wheeler. The battery pack 110 is the battery pack of the electric two-wheeler. Thus, without changing the overall vehicle architecture of the electric two-wheeler, only by adding an intelligent pump module between the load 130 and the battery pack 110, the amplitude of the output voltage fluctuation can be effectively reduced. The sodium battery pack has good low-temperature characteristics and safety advantages and becomes an ideal choice for low-speed electric vehicles (48V electric two-wheelers). When the battery pack 110 is a sodium battery pack, the battery pack 110 is a 48V sodium battery pack, thereby improving the safety performance of the electric two-wheeler. And due to the characteristic defect of the wide discharge platform of the sodium battery, the intelligent boost device in the embodiment of the present invention can be applied to an electric two-wheeler using a 48V sodium battery pack. Through a dynamic strategy, combined with the battery cycle attenuation characteristics and real-time current feedback, the collaborative optimization of high-efficiency energy output and battery life is realized. Through the frequency-temperature double-threshold compensation mechanism, the reliability of the power supply process for the controller of the electric two-wheeler is improved, and the normal operation of the controller of the electric two-wheeler can be ensured.

[0114] In addition, when the prior art faces the technical problem that the battery voltage drops, resulting in the abnormal operation of the electrical device, the solution is to modify the material, such as high-voltage electrolyte and optimized cathode structure. Although this solution can improve the battery performance, the cost is very high, which is not conducive to large-scale popularization and application. The intelligent boost device provided by the embodiment of the present invention can solve the technical problem that the battery voltage drops, resulting in the abnormal operation of the electrical device, effectively reduce the output voltage fluctuation amplitude, and has a lower cost. It does not require modification of the battery and is conducive to large-scale popularization and application.

[0115] The embodiment of the present invention provides an intelligent boost device. The intelligent boost device combines the battery cycle attenuation characteristics and the real-time output current feedback to control the output voltage to rise, which can realize the collaborative optimization of high-efficiency energy output and battery life, effectively reduce the output voltage fluctuation amplitude, and improve the reliability of the power supply process.

[0116] The embodiment of the present invention also provides an intelligent boost method. Figure 6 As shown in the flowchart of an intelligent boost method in the embodiment of the present invention, the intelligent boost method in the embodiment of the present invention is executed by the intelligent boost device in any embodiment of the present invention. Figure 6 As shown, the intelligent boost method includes:

[0117] S110. Obtain the battery cycle number, output voltage, and output current of the battery pack for the electrical energy output by the battery pack.

[0118] Among them, referring to Figure 1 , the intelligent boost method can be specifically executed by the intelligent pump module 120 in the intelligent boost device. The intelligent pump module 120 can obtain the battery cycle number, output voltage, and output current of the battery pack 110 for the electrical energy output by the battery pack 110.

[0119] S120. When the output voltage is less than the threshold voltage, raise the output voltage of the battery pack according to the output voltage, output current, and battery cycle number, and then deliver it to the load.

[0120] Specifically, referring to Figure 1When the intelligent pump module 120 detects that the output voltage is greater than or equal to the threshold voltage, it does not perform a boosting operation and directly delivers the electrical energy output by the battery pack 110 to the load 130. When the output voltage is less than the threshold voltage, the communication terminal of the intelligent pump module 120 obtains the battery cycle count of the battery pack 110, and in real time, based on the output voltage, output current, and battery cycle count, raises the output voltage of the battery pack 110 and then delivers it to the load 130. Since the intelligent pump module 120 combines the battery cycle attenuation characteristic with real-time output current feedback to control the output voltage increase, it can achieve the collaborative optimization of high-efficiency energy output and battery life, and can effectively reduce the output voltage fluctuation amplitude, improve the reliability of the power supply process, and provide guarantee for the normal operation of the load 130. The embodiment of the present invention solves the technical problem in the prior art that the battery voltage reduction causes the electrical equipment to fail to work properly, and has a low cost and does not require modification of the battery.

[0121] An embodiment of the present invention provides an intelligent boosting method. The intelligent boosting method includes: obtaining the battery cycle count of the battery pack, the output voltage and output current of the electrical energy output by the battery pack; when the output voltage is less than the threshold voltage, raising the output voltage of the battery pack according to the output voltage, output current, and battery cycle count and then delivering it to the load. Since the battery cycle attenuation characteristic is combined with real-time output current feedback to control the output voltage increase, the collaborative optimization of high-efficiency energy output and battery life can be achieved, and the output voltage fluctuation amplitude can be effectively reduced, and the reliability of the power supply process can be improved.

[0122] Another embodiment of the present invention also provides an intelligent boosting method. The intelligent boosting method includes:

[0123] S210. Obtain the battery cycle count of the battery pack, the output voltage and output current of the electrical energy output by the battery pack.

[0124] Among them, referring to Figure 1-5 , specifically, the intelligent pump module 120 is provided with a main control unit 121, a boosting unit 122, a communication module 124, and a voltage acquisition unit 123. The voltage acquisition unit 123 can obtain the output voltage and output current and send them to the main control unit 121. The battery cycle count is obtained by the communication module 124 and then sent to the main control unit 121.

[0125] S220. When the output voltage is less than the threshold voltage, control the output voltage of the battery pack to increase according to the output voltage, the current response of the output current, and the life compensation method based on the battery cycle count.

[0126] Specifically, referring to Figure 1-5, the main control unit 121 collects the output voltage and output current of the battery pack 110 through the voltage acquisition unit 123, and performs a boosting operation through the boosting unit 122. Specifically, when the output voltage is less than the threshold voltage, the main control unit 121 obtains the battery cycle count, and based on the output voltage, the current response of the output current, and the life compensation method based on the battery cycle count, sends a PWM control signal to the boosting unit 122 to control the boosting unit 122 to increase the output voltage of the battery pack 110. Preferably, when the output current is greater than or equal to the preset current, the main control unit 121 controls the output voltage of the boosting unit 122 to be the preset minimum boosting voltage, and when the battery cycle count increases by a preset number each time, the voltage amplitude increased for the battery pack 110 is reduced by a preset percentage, and the preset percentage is greater than 3% and less than 5%.

[0127] Preferably, the output voltage of the boosting unit 122 satisfies:

[0128]

[0129] Where, V boost is the output voltage of the boosting unit 122, I is the output current, n is the battery cycle count, V ref is the preset reference voltage, and V in is the output voltage.

[0130] The embodiment of the present invention also provides another intelligent boosting method. The intelligent boosting method includes:

[0131] S310. Obtain the battery cycle count of the battery pack, the output voltage and output current of the electrical energy output by the battery pack.

[0132] S320. When the output voltage is less than the threshold voltage and the output voltage is in the first boosting interval, control the slope of the increased output voltage to be maintained between the first slope and the second slope; when the output voltage is less than the threshold voltage and the output voltage is in the second boosting interval, control the slope of the increased output voltage to be maintained between the third slope and the second slope.

[0133] Specifically, refer to Figure 1-5, when the output voltage of the intelligent pump module 120 is less than the threshold voltage and the output voltage is in the first boost range, that is, at this time, the output voltage of the battery pack 110 has a significant decrease compared to the rated output voltage, but the degree of decrease is small, and the slope of the increased voltage output by the intelligent pump module 120 is maintained between the first slope and the second slope. In this stage, the highest boost reference of the intelligent pump module 120 is: the increased voltage output by the intelligent pump module 120 can linearly decrease with the output voltage of the battery pack 110, and the slope of the increased voltage output by the intelligent pump module 120 remains the first slope during the decrease process; the lowest boost reference of the intelligent pump module 120 is: the increased voltage output by the intelligent pump module 120 can also linearly decrease independently, and the slope of the increased voltage output by the intelligent pump module 120 remains the second slope during the decrease process, and when the battery pack 110 is a 48V sodium battery pack, the lowest boost can be 38V.

[0134] When the output voltage of the intelligent pump module 120 is less than the threshold voltage and the output voltage is in the second boost range, that is, at this time, the output voltage of the battery pack 110 has a significant decrease compared to the rated output voltage, and the degree of decrease is large, and the slope of the increased voltage output by the intelligent pump module 120 is maintained between the third slope and the second slope. In this stage, the highest boost reference of the intelligent pump module 120 is: the increased voltage output by the intelligent pump module 120 can linearly decrease with the output voltage of the battery pack 110, and the slope of the increased voltage output by the intelligent pump module 120 remains the third slope during the decrease process; the lowest boost reference of the intelligent pump module 120 is: the increased voltage output by the intelligent pump module 120 can also linearly decrease independently, and the slope of the increased voltage output by the intelligent pump module 120 remains the second slope during the decrease process, maintaining continuity with the voltage decrease process in the previous stage. In the embodiments of the present invention, in different stages of the decrease of the output voltage of the battery pack 110, by differentially controlling the slopes of the increased voltages output by the intelligent pump module 120 in different stages to be different, to match the attenuation degree of the output voltage of the battery pack 110, and to make the increased voltages output by the intelligent pump module 120 form a smooth transition, voltage jumps can be avoided.

[0135] Preferably, when the battery pack 110 is a 48V sodium battery, the threshold voltage U1, the first boost range is (U1, U2), and the second boost range is [U2, U3) satisfy:

[0136] When the number of battery cycles n ≤ 1500, U1 = 48(1 - 0.00005n); when the number of battery cycles n > 1500, U1 = 48(0.925 - 0.00003(n - 1500)).

[0137] U2 = 36(1 - 0.00004n), U3 = 25V.

[0138] By differentiating the slopes of the increased voltages output by the intelligent pump module 120 at different stages of the output voltage drop of the battery pack 110, the attenuation degree of the output voltage of the battery pack 110 can be matched, and a smooth transition of the increased voltage output by the intelligent pump module 120 can be achieved, avoiding voltage jumps, effectively reducing the amplitude of the output voltage fluctuation, and improving the reliability of the power supply process.

[0139] An embodiment of the present invention also provides another intelligent boost method. Refer to Figure 1-5 , the intelligent pump module 120 includes a main control unit 121 and a boost unit 122. The second input end of the intelligent pump module is directly connected to the second output end of the intelligent pump module through a cable; the second input end of the intelligent pump module 120 is directly connected to the second output end of the intelligent pump module 120 through a cable; the first end of the boost unit 122 serves as the first input end of the intelligent pump module 120, the second end of the boost unit 122 serves as the first output end of the intelligent pump module 120, and the third end of the boost unit 122 is connected to the main control unit; the first end of the voltage acquisition unit 123 is connected to the first end of the boost unit, and the second end of the voltage acquisition unit 123 is connected to the main control unit; the intelligent boost method includes:

[0140] S410. Obtain the temperature of the boost unit and the ambient temperature.

[0141] Among them, refer to Figure 1-5 , the temperature of the boost unit 122 and the ambient temperature can be collected through the temperature acquisition unit 125.

[0142] S420. When the temperature of the boost unit or the ambient temperature is greater than the first temperature threshold, control the frequency of the PWM signal sent to the boost unit to decrease, and control the output voltage of the boost unit to decrease; when the temperature of the boost unit or the ambient temperature is less than the second temperature threshold, control the frequency of the PWM signal sent to the boost unit to increase, and control the output voltage of the boost unit to increase.

[0143] Specifically, the main control unit 121 has a high-temperature protection function. When the temperature of the boost unit 122 or the ambient temperature is greater than the first temperature threshold, the main control unit 121 triggers frequency-voltage coordinated derating, controls the frequency of the PWM signal sent to the boost unit 122 to decrease, and controls the output voltage of the boost unit 122 to decrease. For example, before the main control unit 121 detects that the temperature of the boost unit 122 is greater than the first temperature threshold, the frequency of the PWM signal sent by the main control unit 121 to the boost unit 122 is Fpwm, and the main control unit 121 controls the output voltage of the boost unit 122 to be Vboost. When the temperature of the boost unit 122 is greater than the first temperature threshold (for example, the first temperature threshold can be 110 °C), the main control unit 121 controls the frequency of the PWM signal sent to the boost unit 122 to become K1*Fpwm, and controls the output voltage of the boost unit 122 to be K2*Vboost. The PWM signal received by the boost unit 122 changes from Fpwm to K1*Fpwm, and the output voltage of the boost unit 122 changes from Vboost to K2*Vboost. Both K1 and K2 are coefficients. Through the above high-temperature protection process, the boost unit 122 is downshifted to prevent the boost unit 122 from being damaged due to excessive temperature, and the boost unit 122 is protected against high temperature to prevent the interruption of the boost process caused by the damage of the boost unit 122. It can still effectively reduce the amplitude of output voltage fluctuations and further improve the reliability of the power supply process. The main control unit 121 also has a low-temperature protection function. When the temperature of the boost unit 122 or the ambient temperature is less than the second temperature threshold, the main control unit 121 controls the frequency of the PWM signal sent to the boost unit 122 to increase, and controls the output voltage of the boost unit 122 to increase.For example, before the main control unit 121 detects that the temperature of the boost unit 122 is less than the second temperature threshold, the frequency of the PWM signal sent by the main control unit 121 to the boost unit 122 is Fpwm, and the main control unit 121 controls the output voltage of the boost unit 122 to be Vboost. When the temperature of the boost unit 122 is less than the second temperature threshold (for example, the second temperature threshold can be -20 °C), the main control unit 121 controls the frequency of the PWM signal sent to the boost unit 122 to become K3*Fpwm, and controls the output voltage of the boost unit 122 to be Vboost + Vcv. The PWM signal received by the boost unit 122 changes from Fpwm to K3*Fpwm, and the output voltage of the boost unit 122 changes from Vboost to Vboost + Vcv. K3 is a coefficient, and Vcv is a compensation voltage. The compensation voltage Vcv can be set according to the equivalent series resistance (ESR) of the capacitor in the internal boost circuit of the boost unit 122. Through the above low-temperature protection process, the frequency of the boost unit 122 is increased, and the output voltage of the boost unit 122 is compensated to increase the temperature of the boost unit 122, prevent the boost unit 122 from being damaged due to too low temperature, perform low-temperature protection on the boost unit 122, prevent the boost unit 122 from being damaged due to low temperature and causing the interruption of the boost process, and can effectively reduce the output voltage fluctuation amplitude and further improve the reliability of the power supply process.

[0144] When the prior art faces the technical problem that the battery voltage drops and the electrical equipment cannot work properly, the solution is to modify the material, such as high-voltage electrolyte and optimized cathode structure. Although this solution can improve the battery performance, the cost is very high and it is not conducive to large-scale popularization and application. The intelligent boost method provided by the embodiments of the present invention can solve the technical problem that the battery voltage drops and the electrical equipment cannot work properly, effectively reduce the output voltage fluctuation amplitude, and has a lower cost. There is no need to modify the battery, which is conducive to large-scale popularization and application.

[0145] In addition, the intelligent boost method of the embodiments of the present invention includes but is not limited to the above process. The intelligent boost method of the embodiments of the present invention can adaptively increase relevant control processes according to the intelligent boost device in any embodiment of the present invention to achieve the functions and technical effects of the intelligent boost device in any embodiment of the present invention.

[0146] The embodiments of the present invention provide an intelligent boost device. The intelligent boost device combines the battery cycle attenuation characteristics and real-time output current feedback to control the output voltage to rise, which can realize the coordinated optimization of high-efficiency energy output and battery life, effectively reduce the output voltage fluctuation amplitude, and improve the reliability of the power supply process.

[0147] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An intelligent boosting device, characterized in that: The intelligent boost device includes a battery pack, a smart pump module and a load; The positive electrode of the battery pack is connected to the first input terminal of the smart pump module, the negative electrode of the battery pack is connected to the second input terminal of the smart pump module, the first output terminal of the smart pump module is connected to the first terminal of the load, and the second output terminal of the smart pump module is connected to the second terminal of the load; the communication terminal of the battery pack is connected to the communication terminal of the smart pump module; The battery pack is used to deliver electrical energy to the load through the smart pump module; The smart pump module is used to obtain the number of battery cycles of the battery pack, the output voltage and output current of the battery pack outputting electric energy, and when the output voltage is less than a threshold voltage, the output voltage of the battery pack is increased according to the output voltage, the output current and the number of battery cycles, and then transmitted to the load.

2. The intelligent boost device according to claim 1, characterized in that: The smart pump module includes a main control unit, a boost unit and a voltage acquisition unit; The second input end of the smart pump module is directly connected to the second output end of the smart pump module through a cable; the first end of the boost unit serves as the first input end of the smart pump module, the second end of the boost unit serves as the first output end of the smart pump module, and the third end of the boost unit is connected to the main control unit; the first end of the voltage collection unit is connected to the first end of the boost unit, and the second end of the voltage collection unit is connected to the main control unit; The voltage acquisition unit is used to acquire the output voltage and the output current and send them to the main control unit; the boost unit is used to boost the output voltage and then transmit it to the load; The main control unit is used to control the boost unit to increase the output voltage of the battery pack according to the output voltage, the current response of the output current and the life compensation method based on the number of battery cycles when the output voltage is less than the threshold voltage.

3. The intelligent boost device according to claim 2, characterized in that: The main control unit is used to control the output voltage of the boost unit to be a preset minimum boost voltage when the output current is greater than or equal to a preset current, and to reduce the voltage amplitude of the battery pack by a preset percentage each time the number of battery cycles increases by a preset number, and the preset percentage is greater than 3% and less than 5%.

4. The intelligent boost device according to claim 3, characterized in that: The output voltage of the boost unit satisfies: Among them, V boost is the output voltage of the boost unit, I is the output current, n is the number of battery cycles, V ref is the preset reference voltage, V in is the output voltage.

5. The intelligent boosting device according to claim 2, characterized in that: The smart pump module also includes a communication unit; The first end of the communication module serves as the communication end of the smart pump module, and the second end of the communication unit is connected to the main control unit; The communication unit is used to collect the battery cycle number and send the battery cycle number to the main control unit.

6. The intelligent voltage boosting device according to claim 2, characterized in that: The smart pump module also includes a temperature acquisition unit; The output end of the temperature acquisition unit is connected to the main control unit, and the temperature acquisition unit is used to collect the temperature of the boost unit and the ambient temperature, and send the temperature of the boost unit and the ambient temperature to the main control unit; The main control unit is further used to control the frequency of the PWM signal sent to the boost unit to decrease, and control the output voltage of the boost unit to decrease when the temperature of the boost unit or the ambient temperature is greater than a first temperature threshold; The main control unit is further configured to control the frequency of the PWM signal sent to the boost unit to increase, and control the output voltage of the boost unit to increase, when the temperature of the boost unit or the ambient temperature is less than a second temperature threshold.

7. The intelligent boosting device according to any one of claims 1 to 6, characterized in that: The smart pump module is used to maintain the slope of the boosted voltage output between the first slope and the second slope when the output voltage is less than the threshold voltage and the output voltage is in the first boost interval; When the output voltage is less than the threshold voltage and the output voltage is in the second voltage boosting interval, the slope of the boosted output voltage is maintained between the third slope and the second slope.

8. The intelligent voltage boosting device according to claim 7, characterized in that: The first slope, the second slope and the third slope are all smaller than 0, the third slope is greater than the second slope, and the second slope is greater than the first slope.

9. The intelligent voltage boosting device according to claim 7, characterized in that: The first voltage boost interval is (U1, U2), the second voltage boost interval is [U2, U3), and U1>U2>U3.

10. The intelligent voltage boosting device according to claim 9, characterized in that: The rated output voltage of the battery pack is NV; When n≤1500, U1=N(1-0.00005n); when n>1500, U1=N(0.925-0.00003(n-1500)); U2=N1(1-0.00004n), U3=N2V; where N>N1>N2, and n is the number of battery cycles; The smart pump module is also used to control the output boosted voltage to be greater than or equal to 30V when the output voltage is in the second boost interval.

11. The intelligent voltage boosting device according to claim 10, characterized in that: N is 48, N1 is 36, and N2 is 25.

12. The intelligent voltage boosting device according to claim 1, characterized in that: It also includes a power supply and a boost voltage acquisition module; The first end of the power supply is connected to the first input end of the smart pump module, and the second end of the power supply is connected to the power supply end of the smart pump module, and the power supply is used to provide electrical energy to the smart pump module; The first end of the boost voltage acquisition module is connected to the first output end of the smart pump module, and the second end of the boost voltage acquisition module is connected to the feedback end of the smart pump module. The boost voltage acquisition module is used to collect the boosted voltage output by the smart pump module and feed it back to the smart pump module.

13. The intelligent voltage boosting device according to claim 1, characterized in that: The battery pack is a sodium battery pack, and the load is a controller of an electric two-wheeled vehicle.

14. An intelligent voltage boosting method, characterized in that: The intelligent voltage boosting method is performed by the intelligent voltage boosting device according to any one of claims 1 to 13, and the intelligent voltage boosting method comprises: Obtaining the number of battery cycles of a battery pack, and the output voltage and output current of the battery pack outputting electrical energy; When the output voltage is less than a threshold voltage, the output voltage of the battery pack is increased according to the output voltage, the output current and the number of battery cycles, and then transmitted to a load.

15. The intelligent voltage boosting method according to claim 14, characterized in that: The step of increasing the output voltage of the battery pack according to the output voltage, the output current and the number of battery cycles and transmitting the result to the load comprises: When the output voltage is less than a threshold voltage, the output voltage of the battery pack is controlled to increase in a life compensation manner according to the output voltage, the current response of the output current and the number of battery cycles.

16. The intelligent voltage boosting method according to claim 14, characterized in that: The step of increasing the output voltage of the battery pack according to the output voltage, the output current and the number of battery cycles and transmitting the result to the load comprises: When the output voltage is less than the threshold voltage and the output voltage is in the first voltage boosting interval, controlling the slope of the boosted output voltage to be maintained between the first slope and the second slope; When the output voltage is less than the threshold voltage and the output voltage is in the second voltage boosting interval, the slope of the boosted output voltage is controlled to be maintained between the third slope and the second slope.

17. The intelligent voltage boosting method according to claim 14, characterized in that: The smart pump module includes a main control unit and a boost unit, the second input end of the smart pump module is directly connected to the second output end of the smart pump module through a cable; the first end of the boost unit serves as the first input end of the smart pump module, the second end of the boost unit serves as the first output end of the smart pump module, and the third end of the boost unit is connected to the main control unit; the method further includes: Acquiring the temperature of the boost unit and the ambient temperature; When the temperature of the boost unit or the ambient temperature is greater than a first temperature threshold, controlling the frequency of the PWM signal sent to the boost unit to decrease, and controlling the output voltage of the boost unit to decrease; When the temperature of the boost unit or the ambient temperature is less than a second temperature threshold, the frequency of the PWM signal sent to the boost unit is controlled to increase, and the output voltage of the boost unit is controlled to increase.

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