Sodium battery self-adaptive control system

Abstract

The invention provides a sodium battery self-adaptive control system. The system comprises a controller; a sodium battery pack; a sodium electricity protection plate; a voltage detection line EF; an electric door lock; the sodium battery capacity-increasing adapter is used for outputting a voltage signal of the sodium battery pack as a constant voltage signal and outputting the constant voltage signal to the controller after the voltage signal is subjected to step-up / step-down processing, so that the controller normally controls the vehicle to work; a sodium electricity capacity-increasing adapter is installed on a voltage detection circuit EF, voltage signals of a battery pack are output to a controller in the form of constant-value voltage signals after being subjected to voltage boosting and reducing processing through the sodium electricity capacity-increasing adapter, the controller stably keeps working, and the sodium electricity battery pack stops working until the voltage of the sodium electricity battery pack reaches sodium electricity low-level protection voltage. And when the sodium battery of the storage battery car is replaced, the controller stops working, the electric quantity of the sodium battery pack is completely released, and the technical problem that the controller is not matched with the sodium battery when the sodium battery of the storage battery car is replaced in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of battery control, and in particular to a sodium battery self-adaptive control system. Background Art

[0002] like Figure 1 As shown, it is a schematic diagram of the electrical connection between the controller 1 and the battery pack of the existing electric vehicle, wherein the negative output terminal A of the controller 1 is electrically connected to the negative terminal B of the sodium battery pack 2, the positive input terminal D of the controller 1 is electrically connected to the positive output terminal C of the sodium battery pack 2, one end of the voltage detection circuit EF is electrically connected to the voltage collection input terminal F of the controller 1, and the other end is electrically connected to the line between the positive output terminal C and the positive input terminal D, and the electric door lock 4 is arranged on the voltage detection circuit EF to control the on and off of the voltage detection circuit.

[0003] The voltage signal in the battery forms a voltage detection loop through CEFAB, and the controller 1 detects in real time whether the voltage value is lower than the low protection voltage, so that the controller 1 can control the normal operation or stop operation of the battery vehicle.

[0004] The sodium in sodium batteries is rich in reserves and widely distributed, which gives sodium batteries a significant advantage in raw material supply, making the unit energy raw material cost of sodium batteries relatively low. At the same time, compared with lead-acid batteries or lithium batteries, sodium batteries show better stability in high and low temperature environments; in low temperature environments, the discharge efficiency of sodium batteries is still high, which is particularly important for applications in cold regions; at the same time, the thermal runaway temperature of sodium batteries is higher and the safety performance is better. Therefore, sodium batteries are highly valued by the market.

[0005] However, most of the two-wheeled or three-wheeled electric vehicles in the existing stock market use lead-acid batteries or lithium batteries as power sources, and the normal output voltage of the commonly used controllers is 48V, and its low protection voltage is 42V. When the voltage is lower than 42V, the electric vehicle cannot be ridden normally; and the low protection voltage of the sodium battery is 36.5V. If the lead-acid battery is directly replaced with the sodium battery on the existing stock two-wheeled or three-wheeled electric vehicles, the controller that implements the low protection voltage according to the lead-acid standard is not very compatible with the low protection voltage that can be released by the sodium battery. Therefore, the capacity of the sodium battery cannot be fully released normally, that is, the battery capacity difference between the low protection voltage of 42V when the controller stops working and the low protection voltage of 36.5V of the sodium battery itself cannot be used normally, reducing the effective use capacity of the sodium battery. Therefore, how to make the sodium battery adapt to the existing lead-acid battery or lithium battery controller when replacing the sodium battery pack in the existing battery vehicle is a technical problem that needs to be solved urgently.

[0006] In addition, the low protection voltage setting values ​​of existing controllers are higher than the low protection voltage of the battery pack, resulting in a certain difference in capacity between the two, which prevents the battery pack from being fully released, affecting the voltage value released during actual use of the battery. Summary of the invention

[0007] The purpose of the present invention is to provide a sodium battery self-adaptive control system in view of the deficiencies in the prior art. By installing a sodium battery capacity expansion adapter on a voltage detection circuit EF, the voltage signal of the battery pack is subjected to voltage-up and voltage-down processing by the sodium battery capacity expansion adapter, and then output to a controller as a fixed voltage signal, so that the controller can stably maintain operation until the voltage of the sodium battery pack reaches the sodium battery low protection voltage, the sodium battery pack stops working, the controller stops working, and the power of the sodium battery pack is completely released, thereby solving the technical problem of mismatch between the controller and the sodium battery when replacing the sodium battery of the existing electric battery vehicles in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solutions: A sodium battery adaptive control system, comprising: A controller, which controls the motor start, operation, advance and retreat, speed, stop of the vehicle and the operation of other electronic devices on the electric bicycle; A sodium battery pack, the sodium battery pack is used to provide electric energy to the vehicle; the negative output terminal A of the controller is electrically connected to the negative terminal B of the sodium battery pack, and the positive input terminal D of the controller is electrically connected to the positive output terminal C of the sodium battery pack; A sodium battery protection board, which is disposed in the sodium battery pack and controls the capacity of the sodium battery pack to be not lower than a low protection voltage of the sodium battery pack; A voltage detection circuit EF, one end of which is electrically connected to the voltage acquisition input terminal F of the controller, and the other end of which is electrically connected to the line between the positive output terminal C and the positive input terminal D; An electric door lock, which is arranged on a voltage detection circuit and is used to control the on and off of the voltage detection circuit; It is characterized in that it also includes a sodium battery capacity expansion adapter, which is used to output the voltage signal of the sodium battery pack as a constant voltage signal after voltage increase / decrease processing and output it to the controller, so that the controller can control the vehicle operation normally.

[0009] As an improvement, the negative input terminal K of the sodium battery capacity expansion adapter is electrically connected to the negative terminal B of the sodium battery pack; the positive input terminal I of the sodium battery capacity expansion adapter is electrically connected to the J contact on the voltage detection circuit EF, and the positive output terminal H of the sodium battery capacity expansion adapter is electrically connected to the G contact on the voltage detection circuit EF.

[0010] As an improvement, the J contact and the G contact are located between the voltage collection input terminal F and the electric door lock.

[0011] As an improvement, the J contact and the G contact are respectively located on both sides of the electric door lock.

[0012] As an improvement, the J contact and the G contact are located between the electric door lock and the positive output terminal C.

[0013] As an improvement, the input voltage of the positive input terminal I is 5V-95V.

[0014] As an improvement, the output voltage of the positive output terminal H is 12V-90V.

[0015] As an improvement, the output current of the positive output terminal H is less than 0.1A.

[0016] As an improvement, the sodium battery capacity expansion adapter is installed in the sodium battery pack.

[0017] As an improvement, the sodium battery capacity expansion adapter is installed outside the sodium battery pack.

[0018] As an improvement, the sodium battery capacity expansion adapter includes: a voltage input interface, a step-up and step-down control system, and a voltage output interface.

[0019] The beneficial effects of the present invention are: (1) The present invention installs a sodium battery capacity expansion adapter on the voltage detection circuit EF, so that the voltage signal of the battery pack is processed by the sodium battery capacity expansion adapter for step-up and step-down, and then outputs a fixed voltage signal to the controller, so that the controller can keep working stably until the voltage of the sodium battery pack reaches the sodium battery low protection voltage, then the sodium battery pack stops working, the controller stops working, and the power of the sodium battery pack is completely released.

[0020] (2) The present invention sets the input voltage of the sodium battery capacity expansion adapter to a range of 5V-95V, which meets the battery voltage range of existing battery vehicles on the market and improves the versatility of the sodium battery capacity expansion adapter.

[0021] (3) The present invention realizes rapid matching of battery packs of different vehicle models by adjusting the voltage of the output terminal H of the sodium battery capacity expansion adapter, which facilitates replacement operations.

[0022] (4) The output current of the positive output terminal H of the present invention is designed to be less than 0.1A, which basically realizes that the capacity expansion adapter does not affect the normal use of the battery capacity.

[0023] (5) The present invention connects the connection terminal of the sodium battery capacity expansion adapter between the voltage acquisition input terminal F and the electric door lock, so that after the electric door lock is turned on, current passes through the sodium battery capacity expansion adapter, thereby reducing the power consumption of the battery pack when the electric door lock is turned off.

[0024] (6) The present invention improves the integration of the sodium battery pack during the production process by integrating the capacity expansion adapter inside the battery pack.

[0025] (7) The present invention adds a capacity expansion adapter to quickly adapt to different controllers when replacing the sodium battery pack on site, which is low-cost and quick and convenient to replace.

[0026] In summary, the present invention has the advantages of being adaptable to battery packs of different voltages, being able to completely release the power of the battery pack, being easy to install and replace, and having low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the connection between the controller and the battery in the prior art; Figure 2 This is a schematic diagram of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of Embodiment 3 of the present invention; Figure 5 This is a schematic diagram of Embodiment 4 of the present invention; Figure 6 It is a schematic diagram of the boost-boost control system of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] Embodiment 1 like Figure 2 As shown, this embodiment provides a sodium battery adaptive control system, including: A controller 1, which controls the motor start, operation, advance and retreat, speed, stop of the vehicle and the operation of other electronic components on the electric bicycle; A sodium battery pack 2, the sodium battery pack 2 is used to provide electric energy to the vehicle; the negative output terminal A of the controller 1 is electrically connected to the negative terminal B of the sodium battery pack 2, and the positive input terminal D of the controller 1 is electrically connected to the positive output terminal C of the sodium battery pack 2; A sodium battery protection board 3, which is disposed in the sodium battery pack 2 and controls the capacity of the sodium battery pack 2 to be not lower than the low protection voltage of the sodium battery; A voltage detection circuit EF, one end of which is electrically connected to the voltage acquisition input terminal F of the controller 1, and the other end of which is electrically connected to the circuit between the positive output terminal C and the positive input terminal D; An electric door lock 4, which is arranged on a voltage detection circuit and is used to control the on and off of the voltage detection circuit; It also includes a sodium battery capacity expansion adapter 5, which is used to output the voltage signal of the sodium battery pack 2 as a constant voltage signal after voltage increase / decrease processing and output it to the controller 1, so that the controller 1 can control the vehicle operation normally.

[0031] It should be noted that, by closing the electric door lock 4, the sodium battery pack 2 and the controller 1 are connected, and the controller 1 can control the vehicle's motor start, operation, forward and backward, speed, stop and the operation of other electronic devices on the electric bicycle; wherein, the voltage signal of the sodium battery pack 2 passes through the sodium battery capacity expansion adapter 5, and after the sodium battery capacity expansion adapter 5 is increased / decreased, the voltage output by the sodium battery capacity expansion adapter 5 is always the set voltage value, such as 48V, 60V, 72V, etc., and the stable output voltage signal is sent to the controller 1, so that the input voltage signal received by the controller 1 is a constant value, and the controller 1 keeps sending a normal working signal until the voltage of the sodium battery pack 2 is released to a low protection voltage value, so that the sodium battery protection board 3 is triggered, and the battery pack no longer discharges to the outside, and the full discharge is completed, thereby improving the vehicle's mileage.

[0032] Preferably, the negative input terminal K of the sodium battery capacity expansion adapter 5 is electrically connected to the negative terminal B of the sodium battery pack 2; the positive input terminal I of the sodium battery capacity expansion adapter 5 is electrically connected to the J contact on the voltage detection circuit EF, and the positive output terminal H of the sodium battery capacity expansion adapter 5 is electrically connected to the G contact on the voltage detection circuit EF.

[0033] It should be noted that the J contact is arranged far away from the voltage collection input terminal F, and the G contact is arranged close to the voltage collection input terminal F.

[0034] Furthermore, the J contact and the G contact are located between the voltage collection input terminal F and the electric door lock 4 .

[0035] It should be noted that, through the above-mentioned setting method, current will be generated between line IJ and line HG only after the electric door lock 4 is turned on, so that after the electric door lock 4 is turned off, no current passes through the sodium battery adapter capacitor, thereby reducing the battery loss during parking.

[0036] Preferably, the input voltage of the positive input terminal I is 5V-95V.

[0037] It should be noted that the input voltage signal of the sodium battery capacity expansion adapter 5 of the present application can adapt to the battery voltage of all two-wheeled and three-wheeled electric vehicles on the existing stock market, and has a wide range of applications.

[0038] Preferably, the output voltage of the positive output terminal H is 12V-90V.

[0039] It should be noted that the output end of the sodium battery capacity expansion adapter 5 of the present application preferably adopts three sets of fixed value output voltage signals, preferably 48V, 60V, 72V commonly used battery car voltage output signal values, and by adjusting different wiring terminals, three sets of different voltage value signals are output, which is suitable for different battery car battery installations. At the same time, other output voltage values ​​can also be selected according to different battery car batteries, and are not limited to the above three voltage values.

[0040] Preferably, the output current of the positive output terminal H is less than 0.1A.

[0041] It should be noted that, through the wiring method of this embodiment, in actual use, the current of the positive output terminal H is only 0.03A, and its power consumption can be basically ignored.

[0042] Preferably, the sodium battery capacity expansion adapter 5 is installed in the sodium battery pack 2 .

[0043] It should be noted that, by installing the sodium battery capacity expansion adapter 5 inside the battery pack, during the production process of the original sodium battery pack 2, the sodium battery capacity expansion adapter 5 can be placed inside the battery pack, thereby improving the integration of the battery pack.

[0044] In this embodiment, the voltage of a conventional single battery is 12V, and the voltage of multiple batteries connected in series can be 24V, 36V, 48V, 60V, 72V, 84V, etc. Taking a 48V battery as an example, its low protection voltage is 36.5V. By setting a sodium battery capacity expansion adapter 5, the difference capacity between the traditional controller 1 with a low protection voltage of 42V and the minimum protection voltage of 36.5V of sodium battery can be completely released, increasing the use time of the electric vehicle by about 15 minutes, so that the effective capacity of the battery can be fully released, which does not affect the battery life and increases the mileage of the electric vehicle.

[0045] At the same time, the user does not need to replace a new controller 1, which solves the problem that replacing the controller 1 not only causes mismatched technology, but also causes mismatch of the controller 1 when the battery is replaced next time. In addition, the cost of the controller 1 is relatively high, and ordinary users will not choose to replace the controller 1 every time.

[0046] The sodium battery capacity expansion adapter 5 of the present invention is low-priced and is not limited to the type of battery. It can provide a stable output voltage signal to the controller 1 until the low voltage protection of the battery pack is triggered and the sodium battery pack stops supplying power.

[0047] Embodiment 2 like Figure 2As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: In this embodiment, the J contact and the G contact are respectively located on two sides of the electric door lock 4 .

[0048] It should be noted that, through this setting, when the remote control key is used to control the vehicle, the remote control opening / closing controller 1 can be used to realize the opening and closing of the vehicle. At the same time, the sodium battery capacity expansion adapter 5 can also work normally without being affected by the electric door lock 4.

[0049] In addition, the sodium battery capacity expansion adapter 5 can also be integrated with the controller 1 so that the voltage input to the controller from the source is a stable constant voltage, thereby improving the compactness of the device.

[0050] Specifically, the J contact of the sodium battery capacity expansion adapter 5 is connected to the D contact of the positive wiring point of the battery pack input to the controller 1, its G contact is connected to the F contact, and the L contact is connected to the A contact, so as to shorten the line and improve the compactness of the equipment. At the same time, the integrated controller 1 can use the remote control to start the vehicle. In some cases where it is inconvenient to insert the key to start the vehicle, the remote control can be used to quickly start the vehicle.

[0051] Embodiment 3 like Figure 3 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The differences between the third embodiment and the first embodiment are as follows: In this embodiment, the J contact and the G contact are located between the electric door lock 4 and the positive output terminal C.

[0052] It should be noted that, through the above-mentioned setting method, the opening and closing of the electric door lock 4 controls the on-off of the voltage detection circuit EF, cooperates with the sodium battery capacitor to increase and decrease the voltage and output a stable voltage signal to the controller 1, so that the capacity of the sodium battery pack 2 is effectively released, thereby increasing the service life of the battery vehicle.

[0053] Embodiment 4 like Figure 5 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The fourth embodiment differs from the first embodiment in that: In this embodiment, the sodium battery capacity expansion adapter 5 is installed outside the sodium battery pack 2 .

[0054] It should be noted that when the existing stock of electric vehicles is replaced with a sodium battery pack 2 by using a sodium battery capacity expansion adapter 5, the controller 1 of the battery vehicle can be quickly adapted by adding an external sodium battery capacity expansion adapter 5, thereby solving the technical problem of the mismatch between the low-level protection voltage of the controller 1 and the battery pack in the prior art.

[0055] When replacing the sodium battery pack 2, it is only necessary to disconnect the line between the electric door lock 4 and the voltage acquisition input terminal F, and respectively connect the positive output terminal H and the positive input terminal I of the sodium battery capacity expansion adapter 5, and connect the negative input terminal K to the negative pole of the battery pack to achieve quick installation of the sodium battery capacity expansion adapter 5.

[0056] Embodiment 5 like Figure 6 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the fifth embodiment and the first embodiment is that: In this embodiment, the sodium battery capacity expansion adapter 5 includes: voltage input interfaces K, I, a step-up and step-down control system, and a voltage output interface H.

[0057] The buck-boost control system includes: a switch tube Q1, an energy storage inductor L1, a diode D1, an output filter capacitor C1 and a load resistor R1.

[0058] It should be noted that the buck-boost control system also includes a control chip for controlling the operation of the system.

[0059] When the switch is turned on, the input current flows directly from the inductor to the ground, and the right-end output is mainly maintained by the capacitor discharge; When the switch is turned off, the inductor current flows from ground to the load and capacitor, and then returns to the inductor after passing through the diode.

[0060] The output voltage is increased or decreased by controlling the duty cycle of the PWM wave of the switch tube.

[0061] When the duty cycle is greater than 1 / 2, the voltage is boosted; when the duty cycle is less than 1 / 2, the voltage is bucked.

[0062] It should be noted that the present application adopts a conventional buck-boost circuit to achieve input voltage step-up and step-down, and adjusts the output voltage through different load resistors to adapt to different output voltage vehicle models and improve the application scope of the sodium battery capacity expansion adapter.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sodium battery adaptive control system, comprising: A controller (1), the controller (1) controlling the motor start, operation, advance and retreat, speed, stop of the vehicle and the operation of other electronic components on the electric bicycle; A sodium battery pack (2), the sodium battery pack (2) being used to provide electric energy to a vehicle; a negative electrode output terminal A of the controller (1) being electrically connected to a negative electrode terminal B of the sodium battery pack (2), and a positive electrode input terminal D of the controller (1) being electrically connected to a positive electrode output terminal C of the sodium battery pack (2); A sodium battery protection board (3), the sodium battery protection board (3) being arranged in the sodium battery pack (2) and controlling the capacity of the sodium battery pack (2) to be not lower than a low protection voltage of the sodium battery pack (2); a voltage detection circuit EF, one end of which is electrically connected to a voltage acquisition input terminal F of the controller (1), and the other end of which is electrically connected to a circuit between the positive electrode output terminal C and the positive electrode input terminal D; An electric door lock (4), the electric door lock (4) being arranged on a voltage detection circuit and used for controlling the on and off of the voltage detection circuit; The invention is characterized in that it also comprises a sodium battery capacity expansion adapter (5), which is used to output a constant voltage signal of the sodium battery pack (2) through voltage step-up / step-down processing and output the signal to the controller (1), so that the controller (1) can normally control the operation of the vehicle.

2. A sodium battery adaptive control system according to claim 1, characterized in that: The negative input terminal K of the sodium battery capacity expansion adapter (5) is electrically connected to the negative terminal B of the sodium battery pack (2); the positive input terminal I of the sodium battery capacity expansion adapter (5) is electrically connected to the J contact on the voltage detection circuit EF, and the positive output terminal H of the sodium battery capacity expansion adapter (5) is electrically connected to the G contact on the voltage detection circuit EF.

3. A sodium battery adaptive control system according to claim 2, characterized in that: The J contact and the G contact are located between the voltage collection input terminal F and the electric door lock (4).

4. A sodium battery adaptive control system according to claim 2, characterized in that: The J contact and the G contact are respectively located on two sides of the electric door lock (4).

5. A sodium battery adaptive control system according to claim 2, characterized in that: The J contact and the G contact are located between the electric door lock (4) and the positive output terminal C.

6. A sodium battery adaptive control system according to any one of claims 2 to 5, characterized in that: The input voltage of the positive input terminal I is 5V-100V.

7. A sodium battery adaptive control system according to any one of claims 2 to 5, characterized in that: The output voltage of the positive output terminal H is 12V-96V.

8. A sodium battery adaptive control system according to any one of claims 2 to 5, characterized in that: The output current of the positive output terminal H is less than 0.1A.

9. A sodium battery adaptive control system according to any one of claims 1 to 5, characterized in that: The sodium battery capacity expansion adapter (5) is installed inside the sodium battery pack (2), installed outside the sodium battery pack (2), or integrated with the controller (1).

10. A sodium battery adaptive control system according to any one of claims 1 to 5, characterized in that: The sodium battery capacity-increasing adapter (5) comprises: a voltage input interface, a step-up / step-down control system, and a voltage output interface.

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