Rapid charging device for charging plurality of battery packs and rapid charging method using same

Abstract

The present invention relates to a rapid charging device for charging a plurality of battery packs and a rapid charging method using same and, more particularly, to a rapid charging device for charging a plurality of battery packs and a rapid charging method using same, the rapid charging device including: a positive electrode high voltage terminal for supplying a voltage; a negative electrode high voltage terminal for supplying a voltage; a plurality of DC / AC converters connected to the positive electrode high voltage terminal and the negative electrode high voltage terminal, respectively; a plurality of slidacs connected to the plurality of DC / AC converters, respectively, to adjust a value of a voltage; a plurality of AC / DC converters connected to the plurality of slidacs, respectively; a plurality of resistor modules connected to the plurality of AC / DC converters; and a controller connected to the plurality of slidacs, respectively, to control a value of a voltage passing through the slidacs.

Description

Rapid charging device for charging multiple battery packs and rapid charging method using the same

[0001] This application claims the benefit of priority based on Korean Patent Application No. 2024-0133963 filed on October 2, 2024, and all contents disclosed in the document of said Korean patent application are incorporated herein as part of this specification.

[0002] The present invention relates to a rapid charging device for charging a plurality of battery packs and a rapid charging method using the same. Specifically, it relates to a rapid charging device for charging a plurality of battery packs and a rapid charging method using the same, which can easily perform rapid charging of the plurality of battery packs in correspondence with their respective states.

[0003] Recently, due to air pollution caused by the use of fossil fuels and the development of alternative energy sources resulting from energy depletion, the demand for secondary batteries capable of storing generated electrical energy is increasing.

[0004] Rechargeable batteries, which serve as an indispensable energy source for various electronic devices in modern society, are seeing increased capacity requirements due to the growing usage and complexity of mobile devices and the development of electric vehicles. While multiple battery cells are arranged in small devices to meet user demand, vehicles utilize battery modules that electrically connect multiple battery cells, or battery packs equipped with multiple such modules.

[0005] In the case of electric vehicles, high-capacity battery packs are installed and used. When these high-capacity battery packs are discharged after use, it is common practice to recharge them using a fast charger.

[0006] Due to the large capacity of these high-capacity battery packs, they require a significant amount of time to fully charge using the charging speeds typically used in smartphones; therefore, to reduce charging time, charging is performed using a fast charger.

[0007] When performing rapid charging using such a rapid charger, high temperatures are generated in the battery pack, which may lead to problems such as degradation of battery pack performance and reduced charging efficiency.

[0008] FIG. 1 is a block diagram showing a charging device of a charging system according to the prior art. As shown in FIG. 1, the battery pack charging system according to the prior art includes a variable charging voltage and a variable charging current, and is a system in which a battery pack (10) is electrically connected to the variable charging voltage and the variable charging current to charge.

[0009] A battery pack charging system according to this prior art controls the temperature of the battery pack (10) by adjusting the supplied current and voltage to prevent heat from being generated in the battery pack (10) when the battery pack (10) is rapidly charged and from exceeding a reference value that affects the charging efficiency.

[0010] However, since these conventional technologies reduce the heat generated during charging by regulating current and voltage and must wait for the temperature to drop, it is not easy to control the battery pack temperature to reach an appropriate temperature or within an appropriate temperature range immediately.

[0011] In addition, such temperature control may result in the temperature gradually decreasing after rising above an appropriate level; in such cases, there is a problem in that the high temperature leads to degradation of battery pack performance and reduced charging efficiency.

[0012] (Prior Art Literature)

[0013] (Patent Document 1) Korean Published Patent Application No. 2023-0166599

[0014] To solve the above-mentioned problems, the present invention aims to provide a rapid charging device for charging multiple battery packs and a rapid charging method using the same, which controls the heat generated from the battery pack during rapid charging to perform rapid charging at an appropriate temperature and prevents degradation of battery pack performance and battery pack charging efficiency during charging.

[0015] A rapid charging device for charging a plurality of battery packs according to the present invention for achieving the above-mentioned purpose comprises a positive (+) high voltage terminal (100) for supplying voltage, a negative (-) high voltage terminal (200) for supplying voltage, a plurality of DC / AC converters (300) connected to each of the positive (+) high voltage terminal (100) and the negative (-) high voltage terminal (200), a plurality of slidacs (400) connected to each of the plurality of DC / AC converters (300) to adjust voltage values, a plurality of AC / DC converters (500) connected to each of the plurality of slidacs (400), a plurality of resistor modules (600) connected to the plurality of AC / DC converters (500), and a control unit (700) connected to each of the slidacs (400) to control voltage values ​​passing through the slidacs (400).

[0016] In addition, in the rapid charging device according to the present invention, the control unit (700) is characterized by being equipped with a plurality of temperature measuring sensors (710) capable of measuring the temperature of each of the plurality of battery packs (P1, P2, P3).

[0017] In addition, in the rapid charging device according to the present invention, the control unit (700) is characterized by having a plurality of temperature control units (720) capable of controlling the temperature of each of the plurality of battery packs (P1, P2, P3).

[0018] In addition, in the rapid charging device according to the present invention, the temperature control unit (720) is characterized by having heating and cooling functions.

[0019] In addition, in the rapid charging device according to the present invention, the plurality of battery packs (P) are characterized by being charged through a charging transient state and a charging normal state up to a target temperature.

[0020] In addition, in the rapid charging device according to the present invention, the temperature control during the charging transient state is characterized by fixing the voltage value of the slidac (400) and controlling the temperature of the battery pack with the temperature control unit (720).

[0021] In addition, in the rapid charging device according to the present invention, the temperature control in the normal charging state is characterized by controlling the temperature of the battery pack using the voltage value of the slidac (400) and / or the temperature control unit (720).

[0022] In addition, in the rapid charging device according to the present invention, the temperature control unit (720) in the charging transient state is characterized by the heating and cooling functions being individually operated and stopped according to the rate of change of temperature over time (dT / dt) of the plurality of battery packs (P1, P2, P3).

[0023] In addition, in the rapid charging device according to the present invention, the temperature control of the battery pack in the normal charging state is characterized by controlling the temperature of the battery pack based on the voltage value of the slidac (400) and / or the predicted temperature value generated by a recursive filter using the past temperature value and current temperature value of the battery pack over time by the temperature control unit (720) and the allowable temperature range of the target temperature.

[0024] In addition, in the rapid charging device according to the present invention, if the current temperature value is within the allowable temperature range, the voltage value of the slidac (400) is adjusted based on the predicted temperature value to control the temperature of the battery pack (P1, P2, P3), and if the current temperature value is outside the allowable temperature range, the voltage value is adjusted and / or the temperature of the battery pack is controlled by the temperature control unit (720).

[0025] In addition, in the rapid charging device according to the present invention, the temperature control unit (720) is characterized by predicting the temperature change of the battery packs (P1, P2, P3) over time based on one or more of the ambient temperature, C-rate, and SOC status, and the heating and cooling functions are operated and stopped.

[0026] In addition, the rapid charging method according to the present invention is characterized by comprising: a first step of measuring one or more sensing information among the temperature, ambient temperature, C-rate, and SOC status of each of a plurality of battery packs; a second step of charging the battery packs by adjusting one or more of the voltage value of a slidac and a temperature control unit according to the sensing information; a third step of maintaining the target temperature of the plurality of battery packs within an allowable temperature range; and a fourth step of terminating the charging when the charging of the plurality of battery packs is completed.

[0027] In addition, in the rapid charging method according to the present invention, the plurality of battery packs are characterized by being charged through a charging transient state and a charging normal state up to the target temperature.

[0028] In addition, in the rapid charging method according to the present invention, the temperature control during the charging transient state is characterized by fixing the voltage value of the slidac and controlling the temperature of the battery pack with the temperature control unit.

[0029] In addition, in the rapid charging method according to the present invention, the temperature control in the normal charging state is characterized by controlling the temperature of the battery pack using the voltage value of the slidac and / or the temperature control unit.

[0030] In addition, in the rapid charging method according to the present invention, the temperature control of the battery pack in the normal charging state is characterized by controlling the temperature of the battery pack based on the voltage value of the slidac and / or the predicted temperature value generated by a recursive filter using the past temperature value and current temperature value of the battery pack over time with the temperature control unit and the allowable temperature range of the target temperature.

[0031] As explained above, the rapid charging device for charging a plurality of battery packs according to the present invention and the rapid charging method using the same have the advantage of maintaining battery pack charging efficiency by using a slidac capable of adjusting voltage values ​​and a temperature control unit so that charging is performed within the allowable temperature range of the target temperature when charging the battery pack.

[0032] In addition, the rapid charging device for charging a plurality of battery packs according to the present invention and the rapid charging method using the same have the advantage that when the temperature of the battery pack rises and exceeds the allowable temperature range, it is cooled by the voltage value control of the slidac and the temperature control unit, thereby preventing the degradation of the battery pack's performance due to high temperature.

[0033] FIG. 1 is a block diagram showing a charging device of a charging system according to the prior art.

[0034] FIG. 2 is a schematic diagram showing a rapid charging device according to an embodiment of the present invention.

[0035] Figure 3 is a graph showing the temperature change of a battery pack over time when using a rapid charging device according to an embodiment of the present invention.

[0036] FIG. 4 is a flowchart illustrating a rapid charging method for charging a battery pack according to an embodiment of the present invention.

[0037] Embodiments that enable a person skilled in the art to easily implement the present invention are described in detail below with reference to the attached drawings. However, in describing the operating principles of preferred embodiments of the present invention in detail, if it is determined that a specific description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description will be omitted.

[0038] In addition, the same reference numerals are used for parts having similar functions and operations throughout the drawings. Throughout the specification, when a part is described as being connected to another part, this includes not only cases where they are directly connected, but also cases where they are indirectly connected with other elements in between. Furthermore, unless specifically stated otherwise, the inclusion of a certain component does not exclude other components but implies that additional components may be included.

[0039] Hereinafter, a rapid charging device for charging a plurality of battery packs according to the present invention and a rapid charging method using the same will be described with reference to the attached drawings.

[0040] FIG. 2 is a schematic diagram showing a rapid charging device according to an embodiment of the present invention, and FIG. 3 is a graph showing the temperature change of a battery pack over time when using the rapid charging device according to an embodiment of the present invention.

[0041] Referring to FIGS. 2 and 3, a rapid charging device according to a preferred embodiment of the present invention comprises a positive (+) high-voltage terminal (100), a negative (-) high-voltage terminal (200), a DC / AC converter (300), a slidac (400), an AC / DC converter (500), a resistor module (600), and a control unit (700).

[0042] First, the positive (+) high voltage terminal (100) is connected to the battery packs (P1, P2, P3) through a DC / AC converter (300) to supply voltage, thereby rapidly charging the battery packs (P1, P2, P3).

[0043] The positive (+) high voltage terminal (300) is structured such that wires are branched and connected to each of the multiple DC / AC converters (300) to supply a constant voltage and rapidly charge the battery packs (P1, P2, P3).

[0044] The negative (-) high voltage terminal (200) is connected to the battery packs (P1, P2, P3) through a DC / AC converter (300) to supply voltage, thereby rapidly charging the battery packs (P1, P2, P3).

[0045] The negative (-) high voltage terminal (200) is structured such that wires are branched and connected to each of the multiple DC / AC converters (300) to supply a constant voltage and rapidly charge the battery packs (P1, P2, P3).

[0046] At this time, the means for charging the battery packs (P1, P2, P3) is composed of a positive (+) high-voltage terminal (100) and a negative (-) high-voltage terminal (200), so that parallel control is easy during charging, and there is an advantage that if one high-voltage terminal fails, the other high-voltage terminal is provided so that damage caused by the failure can be reduced.

[0047] Next, the DC / AC converter (300) converts the DC power supplied from the positive (+) high voltage terminal (100) and the negative (-) high voltage terminal (200) into AC power, and is connected to the positive (+) high voltage terminal (100) and the negative (-) high voltage terminal (200), respectively, and a slidac (400) is connected to the other side.

[0048] The DC / AC converter (300) converts direct current (DC) power into alternating current (AC) power to make it easier to adjust the voltage value in the slidac (400) connected to the other side.

[0049] The slidac (400) is capable of adjusting the voltage value received from the DC / AC converter (300), with one side connected to the DC / AC converter (300) and the other side connected to the AC / DC converter (500).

[0050] A plurality of slidacs (400) are formed and are configured to correspond to each of the plurality of DC / AC converters (300), so that the voltage value through the plurality of DC / AC converters (300) can be individually adjusted.

[0051] Meanwhile, the slidac (400) may adjust the voltage by physically moving a slider provided inside to change the voltage distribution according to the slider position, and is not particularly limited as long as the voltage value can be adjusted.

[0052] Next, the AC / DC converter (500) converts the alternating current (AC) power received from the slidac (400) connected to one side into direct current (DC) power, enabling power charging of the battery packs (P1, P2, P3).

[0053] Meanwhile, a plurality of AC / DC converters (500) are formed and configured to correspond to each of the plurality of slidacs (400), and a resistor module (600) is connected to each other on the other side.

[0054] The resistance module (600) is a module having a constant resistance value, one side of which is connected to an AC / DC converter (500), and the other side of which is connected to a battery pack (P1, P2, P3).

[0055] The resistor module (600) lowers the voltage value transmitted through the AC / DC converter (500) by a certain amount through a certain resistance value, thereby suppressing overheating in the battery packs (P1, P2, P3) caused by excessive voltage values ​​when the battery packs (P1, P2, P3) are charged by the voltage.

[0056] Next, the control unit (700) is configured to control the charging status of the rapid charging device, the temperature control of the battery pack (P1, P2, P3), and the charging speed control, and includes a temperature measuring sensor (710) and a temperature control unit (720).

[0057] The control unit (700) is connected to each of the plurality of slidacs (400) and can adjust the voltage value of the slidacs (400).

[0058] In addition, the control unit (700) is individually connected to a plurality of slidacs (400), so that the voltage value flowing through each slidac (400) can be set differently.

[0059] The control unit (700) can measure the real-time temperature of the battery packs (P1, P2, P3) through the temperature measuring sensor (710), and the temperature measuring sensor (710) is provided to correspond to each battery pack (P1, P2, P3) so as to measure the temperature of each battery pack (P1, P2, P3).

[0060] Here, the temperature measuring sensor (710) may be an attached sensor that is in close contact with and attached to each battery pack (P1, P2, P3) as shown in FIG. 2, or a measuring sensor using an infrared camera, and is not particularly limited as long as it can measure the temperature of each battery pack (P1, P2, P3).

[0061] The temperature control unit (720) of the control unit (700) is equipped with heating and cooling functions and is positioned to be attached to each of the plurality of battery packs (P1, P2, P3) to control the temperature of the battery packs (P1, P2, P3).

[0062] The temperature control unit (720) may be a pad type, as shown in FIG. 2, for example, and may be equipped with heating and cooling functions to control the temperature of the battery pack (P1, P2, P3), and is not specifically limited to a pocket shape.

[0063] When controlling the temperature of the battery packs (P1, P2, P3) by the heating and cooling functions of the temperature control unit (720), the temperature control unit (720) can be operated and stopped by predicting the temperature change of the battery packs (P1, P2, P3) over time through a recursive filter based on one or more of the ambient temperature, C-rate, and SOC status.

[0064] This temperature control unit (720) is equipped with heating and cooling functions, so even if a problem occurs in the slidac (400) and the voltage value cannot be adjusted, making it difficult to control the temperature of the battery pack (P1, P2, P3), the temperature of the battery pack (P1, P2, P3) can be controlled through the heating and cooling functions.

[0065] The control unit (700) controls the charging process so that the battery packs (P1, P2, P3) can reach a target temperature using the current temperature values ​​of the battery packs (P1, P2, P3) sensed through the temperature measuring sensor (710).

[0066] At this time, the target temperature is 60°C, which is the charging efficiency of the battery pack (P1, P2, P3), and the allowable temperature range is ±3°C of the target temperature. This is because if the temperature of the battery pack (P1, P2, P3) is lower than the allowable temperature range, the rapid charging efficiency decreases, and if the temperature of the battery pack (P1, P2, P3) is higher than the allowable temperature range, the rapid charging efficiency decreases and the performance of the battery pack (P1, P2, P3) may deteriorate.

[0067] Additionally, the plurality of battery packs (P1, P2, P3) are charged by the control unit (700) through a charging transient state and a charging normal state up to the target temperature, the charging transient state refers to a charging state in which the temperature of the battery packs (P1, P2, P3) is outside the allowable temperature range, and the charging normal state refers to a charging state in which the temperature of the battery packs (P1, P2, P3) is within the allowable temperature range.

[0068] The control unit (700) controls the temperature in the charging transient state by fixing the voltage value of the slidac (400) and controlling the temperature of the battery pack (P1, P2, P3) with the temperature control unit (720).

[0069] More specifically, the control unit (700) fixes the voltage value of the slidac (400) when the temperature of the battery pack (P1, P2, P3) is lower than the allowable temperature range during the charging transient state, and heats the battery pack (P1, P2, P3) using the heating function of the temperature control unit (720) so that the temperature of the battery pack (P1, P2, P3) is controlled to be within the allowable temperature range.

[0070] Additionally, when the temperature of the battery pack (P1, P2, P3) is higher than the allowable temperature range during a charging transient state, the control unit (700) fixes the voltage value of the slidac (400) and cools the battery pack (P1, P2, P3) using the cooling function of the temperature control unit (720) so that the temperature of the battery pack (P1, P2, P3) is controlled to be within the allowable temperature range.

[0071] Meanwhile, in the charging transient state, the temperature control unit (720) can individually operate and stop heating and cooling functions for the multiple battery packs (P1, P2, P3) according to the rate of change of temperature over time (dT / dt) of the multiple battery packs (P1, P2, P3), so there is an advantage that it can respond according to each battery pack (P1, P2, P3).

[0072] In addition, temperature control in the normal charging state adjusts the voltage value of the slidac (400) and controls the temperature of the battery pack (P1, P2, P3) through the heating and cooling functions of the temperature control unit (720).

[0073] At this time, when controlling the temperature of the battery packs (P1, P2, P3) using the voltage value of the slidac (400) and / or the temperature control unit (720) in a normal charging state, control can be achieved through the change in the temperature value sensed by the temperature measurement sensor (710).

[0074] More specifically, the voltage value of the slidac (400) is adjusted so that the temperature can be controlled based on the allowable temperature range of the target temperature, which is 60±3℃, using a recursive filter that uses the past and current temperature values ​​of the battery packs (P1, P2, P3) over time measured by the temperature measuring sensor (710), and the heating and cooling functions of the temperature control unit (720) are operated and stopped to control the temperature of the battery packs (P1, P2, P3).

[0075] If the current temperature value measured by the temperature measuring sensor (710) is within the allowable temperature range, the voltage value of the slidac (400) is adjusted based on the predicted temperature value, and the current value is adjusted accordingly to control the temperature of the battery pack (P1, P2, P3).

[0076] Additionally, if the current temperature value measured by the temperature measuring sensor (710) is outside the allowable temperature range, the voltage value of the slidac (400) can be adjusted and / or temperature control can be performed using the heating and cooling functions of the temperature control unit (720).

[0077] Referring to FIG. 3, an embodiment of the present invention is described as follows: when the current temperature value of the battery pack (P1, P2, P3) measured by the temperature measuring sensor (710) is within the allowable temperature range, the voltage value of the slidac (400) is adjusted so that the current temperature value converges to the target temperature of 60℃.

[0078] More specifically, when the current temperature value is greater than 60℃ and less than or equal to 63℃, the voltage value of the slidoc (400) is reduced to lower the current value, thereby inducing a temperature drop and converging to the target temperature of 60℃.

[0079] In addition, if the current temperature value is 57℃ or higher and less than 60℃, the voltage value of the slidac (400) is increased to increase the current value, thereby inducing a temperature rise and converging to the target temperature of 60℃.

[0080] Meanwhile, if the current temperature value of the battery pack (P1, P2, P3) exceeds 63℃ and is outside the allowable temperature range, the voltage value of the slidac (400) is reduced to lower the current value, and the cooling function of the temperature control unit (720) is activated so that the current temperature value is within the allowable temperature range.

[0081] At this time, the voltage value of the slidac (400) and the cooling function operation setting value of the temperature control unit (720) are set based on the predicted temperature value obtained by applying the past temperature value and the current temperature value to a recursive filter.

[0082] FIG. 4 is a flowchart illustrating a rapid charging method for charging a battery pack according to an embodiment of the present invention.

[0083] Referring to FIG. 4, a method for rapidly charging a plurality of battery packs using a rapid charging device according to a preferred embodiment of the present invention comprises: a first step of measuring one or more sensing information among the temperature, ambient temperature, C-rate, and SOC status of each of the plurality of battery packs; a second step of charging the battery packs by adjusting one or more of the voltage value of a slidac and a temperature control unit according to the sensing information; a third step of maintaining the temperature of the plurality of battery packs within an allowable temperature range; and a fourth step of terminating the charging when the charging of the plurality of battery packs is completed.

[0084] First, the first step of measuring one or more of the sensing information among the temperature, ambient temperature, C-rate, and SOC status of each of a plurality of battery packs is a step of measuring one or more of the sensing information among the temperature, ambient temperature, C-rate, and SOC status of each of a plurality of battery packs using a control unit.

[0085] The control unit determines whether temperature control for the battery pack is necessary based on the above sensing information.

[0086] The second step of charging the battery pack by adjusting one or more of the voltage value of the slidac and the temperature control unit according to the sensing information is a step of charging the battery pack at a target temperature while adjusting one or more of the voltage value of the slidac and the temperature control unit based on the criterion of whether temperature control is necessary determined in the first step.

[0087] At this time, the battery pack is charged through a charging transient state and a charging normal state up to the target temperature. As described above, the charging transient state refers to a charging state in which the temperature of the battery pack (P1, P2, P3) is outside the allowable temperature range, and the charging normal state refers to a charging state in which the temperature of the battery pack (P1, P2, P3) is within the allowable temperature range.

[0088] Based on sensing information, in the case of a charging transient state, temperature control fixes the voltage value of the slidac and controls the temperature of the battery pack through the heating and cooling functions of the temperature control unit.

[0089] Of course, it is also possible to control the temperature of the battery pack using a temperature control unit while adjusting the voltage value of the slidac as needed.

[0090] For example, when the battery pack is in a charge transient state and the temperature of the battery pack is lower than the allowable temperature range, the voltage value of the slidac can be fixed and the heating function of the temperature control unit can be activated to control the temperature so that the temperature of the battery pack is within the allowable temperature range.

[0091] At this time, it is also possible to increase the voltage value of the slidac to increase the current value supplied to the battery pack, thereby increasing the heat generated by charging in the battery pack and keeping the temperature of the battery pack within the allowable temperature range.

[0092] Here, the target temperature at which the charging efficiency of the battery pack can be maintained at its best is 60℃, and the allowable temperature range is 60±3℃, at which the charging efficiency of the battery pack is relatively stable and the degradation of the battery pack's performance can be suppressed.

[0093] The third step of maintaining the temperature of multiple battery packs within an allowable temperature range is to continuously perform rapid charging of the battery packs in a normal charging state, and to control the temperature of the battery packs using the voltage value of the slidac and / or the temperature control unit so that the temperature of the battery packs can be maintained within an allowable temperature range.

[0094] In order to maintain the temperature of the battery pack within the allowable temperature range during normal charging, the temperature of the battery pack is controlled by the voltage value of the slidac and / or the heating and cooling functions of the temperature control unit so that the predicted temperature value generated by the recursive filter using the past and current temperature values ​​of the battery pack over time can be maintained within the allowable temperature range of the target temperature.

[0095] A person skilled in the art to which this invention pertains will be able to perform various applications and modifications within the scope of this invention based on the above content.

[0096] (Explanation of symbols)

[0097] 100: Positive (+) terminal high voltage terminal

[0098] 200: Negative (-) high voltage terminal

[0099] 300: DC / AC converter

[0100] 400: Slidax

[0101] 500: AC / DC Converter

[0102] 600: Resistor module

[0103] 700: Control unit

[0104] 710: Temperature sensor

[0105] 720: Temperature control unit

[0106] P1, P2, P3: Battery pack

Claims

1. A rapid charging device for charging multiple battery packs, Positive high-voltage terminal supplying voltage; A negative high-voltage terminal supplying voltage; A plurality of DC / AC converters connected to each of the above-mentioned positive high-voltage terminal and negative high-voltage terminal; A plurality of slidacs connected to each of the above plurality of DC / AC converters to adjust voltage values; A plurality of AC / DC converters connected to each of the plurality of slidacs above; A plurality of resistor modules connected to the plurality of AC / DC converters above; and A rapid charging device comprising: a control unit connected to each of the above slidacs and capable of controlling the voltage value passing through the slidacs.

2. In Paragraph 1, The above control unit is a rapid charging device equipped with a plurality of temperature measuring sensors capable of measuring the temperature of each of the plurality of battery packs.

3. In Paragraph 2, The above control unit is a rapid charging device equipped with a plurality of temperature control units capable of controlling the temperature of each of the plurality of battery packs.

4. In Paragraph 3, The above temperature control unit is a rapid charging device equipped with heating and cooling functions.

5. In Paragraph 4 The above plurality of battery packs are a rapid charging device that charges through a charging transient state and a charging normal state up to a target temperature.

6. In Paragraph 5, A rapid charging device that controls the temperature during the above charging transient state by fixing the voltage value of the above slidac and controlling the temperature of the above battery pack with the above temperature control unit.

7. In Paragraph 5, A rapid charging device that controls the temperature of the battery pack using the voltage value of the slidac and / or the temperature control unit in the above normal charging state.

8. In Paragraph 6, The temperature control unit in the above charging transient state is a rapid charging device in which the heating and cooling functions are individually operated and stopped according to the rate of temperature change over time of the plurality of battery packs.

9. In Paragraph 7, A rapid charging device that controls the temperature of the battery pack in the above charging normal state based on the voltage value of the above slidac and / or the predicted temperature value generated by a recursive filter using the past temperature value and current temperature value of the battery pack over time with the above temperature control unit and the allowable temperature range of the above target temperature.

10. In Paragraph 9, If the current temperature value is within the allowable temperature range, the voltage value of the slidac is adjusted based on the predicted temperature value to control the temperature of the battery pack, and A rapid charging device that controls the temperature of the battery pack using the voltage value control and / or the temperature control unit when the current temperature value exceeds the allowable temperature range.

11. In Paragraph 7, The above temperature control unit predicts the temperature change of the battery pack over time based on one or more of the ambient temperature, C-rate, and SOC status, and is a rapid charging device in which the heating and cooling functions are operated and stopped.

12. A rapid charging method for charging multiple battery packs using a rapid charging device, A first step of measuring one or more sensing information among the temperature, ambient temperature, C-rate, and SOC status of each of a plurality of battery packs; A second step of charging the battery pack by adjusting one or more of the voltage value of the slidac and the temperature control unit according to the above sensing information; A third step of maintaining the target temperature of the plurality of battery packs above within an allowable temperature range; and A rapid charging method comprising: a fourth step of terminating charging when the plurality of battery packs are fully charged.

13. In Paragraph 12, A rapid charging method in which the plurality of battery packs are charged through a charging transient state and a charging normal state up to the target temperature.

14. In Paragraph 13, Temperature control during the above charging transient state is a rapid charging method in which the voltage value of the above slidac is fixed and the temperature of the above battery pack is controlled by the above temperature control unit.

15. In Paragraph 13, Temperature control in the above charging normal state is a rapid charging method that controls the temperature of the battery pack using the voltage value of the above slidac and / or the above temperature control unit.

16. In Paragraph 15, A rapid charging method in which the temperature control of the battery pack in the above charging normal state controls the temperature of the battery pack based on the voltage value of the above slidac and / or the predicted temperature value generated by a recursive filter using the past temperature value and current temperature value of the battery pack over time with the temperature control unit and the allowable temperature range of the target temperature.

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