KR20230013483A - Battery pack control apparatus conntrolling electric power supply of the battery pack, which is used as the energy source for an agricultural electrical vehicle, and the operating method tehereof - Google Patents

Abstract

Disclosed are a battery pack control apparatus for controlling supply of power to a battery pack used as actuating power for an agricultural electric vehicle, and an operating method thereof. The battery pack control apparatus authenticates a user terminal when receiving, from the user terminal, a power supply cutoff command instructing to cut off supply of power to an agricultural electric vehicle, performs power supply cutoff control so that supply of power to the agricultural electric vehicle by a battery pack is blocked, and transmits a cutoff result message to the user terminal when completely authenticating the user terminal, authenticates the user terminal when receiving, from the user terminal, a cutoff cancellation command instructing to cancel supply of power to the agricultural electric vehicle, and cancels cutoff of supply of power to the agricultural electric vehicle by the battery pack and transmits a cutoff cancellation result message to the user terminal when completely authenticating the user terminal. Therefore, the battery pack control apparatus can perform support so that users can control supply of power by the battery pack by using the user terminal.

Description

BATTERY PACK CONTROL APPARATUS CONNTROLLING ELECTRIC POWER SUPPLY OF THE BATTERY PACK, WHICH IS USED AS THE ENERGY SOURCE FOR AN AGRICULTURAL ELECTRICAL VEHICLE, AND THE OPERATING METHOD TEHEREOF}

The present invention relates to a battery pack control device for controlling power supply of a battery pack used as a driving power source for an agricultural electric vehicle and an operation method thereof.

Recently, as environmental pollution due to harmful exhaust gas generated from internal combustion engine vehicles using gasoline or diesel as fuel has become increasingly serious, various types of eco-friendly vehicles to replace internal combustion engine vehicles have appeared.

Among them, electric vehicles using electric energy as fuel are rapidly spreading in various fields due to advantages such as low noise and vibration and relatively low maintenance costs. Accordingly, introduction of agricultural electric vehicles to replace existing agricultural vehicles such as cultivators and tractors is also increasing.

In this regard, such an electric vehicle for agricultural use is supplied with electric energy serving as fuel from a battery pack installed in the electric vehicle for agricultural use. Such a battery pack is usually composed of a plurality of battery cells, and a lithium ion battery or a lead-acid battery may be used as the battery cells.

On the other hand, for existing agricultural electric vehicles, since the user cannot remotely control the power supply of the battery pack, when the agricultural electric vehicle is stolen or lost and is far away from the user, the user directly There has been a problem that the power supply cannot be cut off, so that appropriate measures cannot be taken to prevent others from using the agricultural electric vehicle.

If the user can remotely control the power supply of the battery pack to the agricultural electric vehicle using the user terminal, even if the agricultural electric vehicle is stolen, by remotely cutting off the power supply of the agricultural electric vehicle, the thief It will be possible to prevent unauthorized use of agricultural electric vehicles.

Therefore, research on a technology for controlling the power supply of a battery pack used as a driving power source for agricultural electric vehicles is required.

The present invention performs authentication on the user terminal when a power supply cutoff command instructing to cut off the power supply to the agricultural electric vehicle is received from the user terminal, and when the authentication on the user terminal is completed, the battery pack After performing power supply cutoff control for cutting off power supply to the agricultural electric vehicle, a cutoff result message is transmitted to the user terminal, and then, from the user terminal, power supply to the agricultural electric vehicle is cut off. When a blocking release command instructing to release is received, authentication is performed on the user terminal, and when authentication on the user terminal is completed, blocking of the battery pack's power supply to the agricultural electric vehicle is released. Then, by presenting a battery pack control device that transmits a block release result message to the user terminal and an operation method thereof, it is intended to support the user to control power supply of the battery pack using the user terminal.

A battery pack control device mounted on an agricultural electric vehicle according to an embodiment of the present invention and controlling power supply of a battery pack used as a driving power source of the agricultural electric vehicle supplies power to the agricultural electric vehicle from a user terminal. When a power supply cutoff command instructing to cut off is received, the user terminal is authenticated, and when the user terminal is authenticated, power for cutting off the power supply of the battery pack to the agricultural electric vehicle When the power supply to the agricultural electric vehicle is cut off as the power supply cutoff control is performed, a cutoff control unit performing supply cutoff control, a cutoff result indicating that the power supply to the agricultural electric vehicle is cut off A blocking result message transmission unit generating a message and transmitting the message to the user terminal, after the blocking result message is transmitted to the user terminal, instructing the user terminal to release the blocking of power supply to the agricultural electric vehicle When an unblocking command is received, authentication of the user terminal is performed, and when authentication of the user terminal is completed, blocking of power supply of the battery pack to the agricultural electric vehicle is released to provide power to the agricultural electric vehicle. As the unblocking control unit and the unblocking control for supplying the unblocking control are performed, when the battery pack is unblocked from supplying power to the agricultural electric vehicle, the amount of power supply to the agricultural electric vehicle is released. and a block release result message transmission unit generating a block release result message indicating that the block is released and transmitting the block release result message to the user terminal.

In addition, an operating method of a battery pack control device mounted on an agricultural electric vehicle according to an embodiment of the present invention and controlling power supply of a battery pack used as a driving power source of the agricultural electric vehicle is provided from a user terminal to the agricultural electric vehicle. When a power supply cutoff command instructing to cut off the power supply to the vehicle is received, the user terminal is authenticated, and when the user terminal is authenticated, the battery pack supplies power to the agricultural electric vehicle. Performing power supply cutoff control to cut off, As the power supply cutoff control is performed, when the power supply of the battery pack to the agricultural electric vehicle is cut off, the power supply to the agricultural electric vehicle is cut off Generating and transmitting an instructing blocking result message to the user terminal, instructing to release the blocking of power supply to the agricultural electric vehicle from the user terminal after the blocking result message is transmitted to the user terminal When an unblocking command is received, authentication of the user terminal is performed, and when authentication of the user terminal is completed, blocking of power supply of the battery pack to the agricultural electric vehicle is released to provide power to the agricultural electric vehicle. Performing block release control for supplying and as the block release control is performed, when the block of power supply to the agricultural electric vehicle of the battery pack is released, the block of power supply to the agricultural electric vehicle and generating a block release result message indicating that the blocking has been released and transmitting the message to the user terminal.

The present invention performs authentication on the user terminal when a power supply cutoff command instructing to cut off the power supply to the agricultural electric vehicle is received from the user terminal, and when the authentication on the user terminal is completed, the battery pack After performing power supply cutoff control for cutting off power supply to the agricultural electric vehicle, a cutoff result message is transmitted to the user terminal, and then, from the user terminal, power supply to the agricultural electric vehicle is cut off. When a blocking release command instructing to release is received, authentication is performed on the user terminal, and when authentication on the user terminal is completed, blocking of the battery pack's power supply to the agricultural electric vehicle is released. Then, by presenting a battery pack control device for transmitting a block release result message to the user terminal and an operating method thereof, it is possible to support the user to control power supply of the battery pack using the user terminal.

1 is a diagram showing the structure of a battery pack control device for controlling power supply of a battery pack used as a driving power source for an agricultural electric vehicle according to an embodiment of the present invention.
2 is a flowchart illustrating an operating method of a battery pack control device for controlling power supply of a battery pack used as a driving power source for an agricultural electric vehicle according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. This description is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. While describing each drawing, similar reference numerals have been used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, are common knowledge in the art to which the present invention belongs. has the same meaning as commonly understood by the person who has it.

In this document, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated. In addition, in various embodiments of the present invention, each component, functional block, or means may be composed of one or more sub-components, and the electrical, electronic, and mechanical functions performed by each component are electronic It may be implemented with various known elements or mechanical elements such as circuits, integrated circuits, ASICs (Application Specific Integrated Circuits), and may be implemented separately or two or more may be integrated into one.

On the other hand, the blocks of the accompanying block diagram or the steps of the flowchart are computer program instructions that perform designated functions by being loaded into a processor or memory of a device capable of data processing, such as a general-purpose computer, a special purpose computer, a portable notebook computer, and a network computer. can be interpreted as meaning Since these computer program instructions may be stored in a memory included in a computer device or in a computer readable memory, the functions described in blocks of a block diagram or steps of a flowchart are produced as a product containing instruction means for performing them. It could be. Further, each block or each step may represent a module, segment or portion of code that includes one or more executable instructions for executing specified logical function(s). Also, it should be noted that in some alternative embodiments, functions mentioned in blocks or steps may be executed out of a predetermined order. For example, two blocks or steps shown in succession may be performed substantially simultaneously or in reverse order, and in some cases, some blocks or steps may be omitted.

1 is a diagram showing the structure of a battery pack control device for controlling power supply of a battery pack used as a driving power source for an agricultural electric vehicle according to an embodiment of the present invention.

Referring to FIG. 1 , a battery pack control device 110 according to the present invention includes a blocking control unit 111, a blocking result message transmission unit 112, a blocking release control unit 113, and a blocking release result message transmission unit 114. include

According to one embodiment of the present invention, the battery pack control device 110 is a device mounted on the agricultural electric vehicle, and may be mounted as one of the parts included in the agricultural electric vehicle in the process of producing the agricultural electric vehicle, , It is not a component mounted during production of the agricultural electric vehicle, but may be configured in the form of an additional device that can be mounted on the agricultural electric vehicle afterward as a stand alone device that exists separately from the agricultural electric vehicle. .

When a power supply cutoff command instructing to cut off power supply to the agricultural electric vehicle is received from the user terminal 140, the cutoff control unit 111 performs authentication on the user terminal 140, and the user terminal 140 ) When authentication is completed, power supply cutoff control is performed to cut off the power supply of the battery pack to the agricultural electric vehicle.

At this time, according to an embodiment of the present invention, the battery pack control device 110 may further include a mapping matrix storage unit 115 as a specific configuration for performing authentication on the user terminal 140, and blocking The controller 111 includes a first authentication event generator 116, a first random generator 117, a first encryption matrix generator 118, a first feedback command transmitter 119, and a block control performer 120. ) may be included.

First, the mapping matrix storage unit 115 stores a mapping matrix having a size of n x n (where n is a natural number greater than or equal to 2) that is pre-shared with the user terminal 140 .

Here, the mapping matrix is a matrix composed of '1' and '0' elements, and t (t is a natural number greater than or equal to 2 and less than n ² ) elements among n ² elements constituting the mapping matrix are '1'. ', and the remaining n ² -t components are designated as '0'.

'과 같은 행렬이 저장되어 있을 수 있다. For example, when n is '3' and t is '4', the mapping matrix storage unit 115 has a mapping matrix of '3 x 3' size previously shared with the user terminal 140, '

A matrix such as ' may be stored.

The first authentication event generation unit 116 generates a first authentication event to authenticate the user terminal 140 when the power supply cutoff command is received from the user terminal 140 .

When the first authentication event is generated by the first authentication event generating unit 116, the first random generator 117 generates t first authentication codes for performing authentication on the user terminal 140 and n ² -t first dummy codes are randomly generated.

When the t first authentication codes and the n ² -t first dummy codes are generated by the first random generator 117, the first encryption matrix generator 118 determines, in the mapping matrix, the mapping Among the n ² elements constituting the matrix, t elements designated with '1' are replaced one by one with the t first authentication codes, and n ² -t elements designated with '0' are replaced, A first encryption matrix having a size of nxn is generated by replacing one by one with the n ² -t number of first dummy codes.

When the first encryption matrix is generated by the first encryption matrix generator 118, the first feedback command transmission unit 119 transmits the first encryption matrix to the user terminal 140, while the first encryption matrix is generated. A first feedback command instructing to extract t components for authentication from among n ² components constituting the first encryption matrix from the matrix and feed them back to the battery pack control device 110 is transmitted.

Hereinafter, operations of the first random generator 117, the first encryption matrix generator 118, and the first feedback command transmission unit 119 will be described in detail by way of example.

First, it is assumed that a power supply cutoff command instructing to cut off the power supply to the agricultural electric vehicle is received from the user terminal 140, and accordingly, the first authentication event generating unit 116 determines that the user terminal 140 Assume that a first authentication event for performing authentication for ) occurs.

'라고 하는 경우, 제1 랜덤 생성부(117)는 사용자 단말(140)에 대한 인증을 수행하기 위한 '4'개의 제1 인증 코드들과 '5'개의 제1 더미 코드들을 랜덤하게 생성할 수 있다.At this time, as in the above example, t is '4' and n is '3', and the mapping matrix is '

', the first random generator 117 may randomly generate '4' first authentication codes and '5' first dummy codes to authenticate the user terminal 140. there is.

'에서, 상기 매핑 행렬을 구성하는 '9'개의 성분들 중 '1'이 지정되어 있는 '4'개의 성분들을, '4'개의 제1 인증 코드들로 하나씩 치환하고, '0'이 지정되어 있는 '5'개의 성분들을, '5'개의 제1 더미 코드들로 하나씩 치환함으로써, '3 x 3' 크기의 제1 암호화 행렬을 생성할 수 있다. In relation to this, '4' first authentication codes generated by the first random generator 117 are referred to as 'P1, P2, P3, P4', and '5' first dummy codes are referred to as 'D1, D2, D3, D4, D5', the first encryption matrix generating unit 118 is the mapping matrix '

In ', the '4' components to which '1' is designated among the '9' components constituting the mapping matrix are replaced one by one with '4' first authentication codes, and '0' is designated A first encryption matrix having a size of '3 x 3' may be generated by substituting '5' elements of '5' elements with '5' first dummy codes.

At this time, the first encryption matrix generating unit 118 converts '4' components, to which '1' is designated, among the '9' components constituting the mapping matrix into '4' first authentication codes, one by one. When permuting, it is possible to permutate one by one sequentially from the left column to the right column and from the top row to the bottom row. That is, in the mapping matrix, the first encryption matrix generator 118 calculates '1st row and 1st column, 1st row and 2nd column, 1st row and 3rd column, 2nd row and 1st column, 2nd row and 2nd column, 2nd row and 3rd column, 3rd row and 1st column' Column, 3rd row, 2nd column, 3rd row, 3rd column' among the components, components designated with '1' may be substituted one by one with '4' first authentication codes.

'의 '1행 1열'의 성분은 '1'이므로, 제1 암호화 행렬 생성부(118)는 상기 매핑 행렬의 '1행 1열'의 성분을, '4'개의 제1 인증 코드들 중 하나인 'P1'로 치환할 수 있다. 또한, 상기 매핑 행렬의 '1행 2열'의 성분은 '0'이므로, 제1 암호화 행렬 생성부(118)는 상기 매핑 행렬의 '1행 2열'의 성분을, '5'개의 제1 더미 코드들 중 하나인 'D1'로 치환할 수 있다.In this regard, the mapping matrix '

Since the component of '1 row and 1 column' of ' is '1', the first encryption matrix generator 118 selects the '1 row and 1 column' component of the mapping matrix among '4' first authentication codes. It can be substituted with one 'P1'. In addition, since the component of the '1st row and 2nd column' of the mapping matrix is '0', the first encryption matrix generator 118 converts the '1st row and 2nd column' components of the mapping matrix into '5' first It can be replaced with 'D1', one of the dummy codes.

'에서, 상기 매핑 행렬을 구성하는 '9'개의 성분들 중 '1'이 지정되어 있는 '4'개의 성분들을, 'P1, P2, P3, P4'로 하나씩 치환하고, '0'이 지정되어 있는 '5'개의 성분들을, 'D1, D2, D3, D4, D5'로 하나씩 치환함으로써, '3 x 3' 크기의 제1 암호화 행렬을 '

'와 같이 생성할 수 있다. In this way, the first encryption matrix generator 118 generates the mapping matrix '

In ', the '4' elements designated by '1' among the '9' elements constituting the mapping matrix are replaced one by one with 'P1, P2, P3, P4', and '0' is designated By replacing the '5' elements in 'D1, D2, D3, D4, D5' one by one, the first encryption matrix having a size of '3 x 3' is '

' can be created.

'를 전송하면서, 상기 제1 암호화 행렬로부터, 상기 제1 암호화 행렬을 구성하는 '9'개의 성분들 중 '4'개의 인증용 성분들을 추출하여 배터리 팩 제어 장치(110)로 피드백할 것을 지시하는 제1 피드백 명령을 전송할 수 있다.Then, the first feedback command transmitter 119 sends the user terminal 140, the first encryption matrix '

', instructing to extract '4' components for authentication among the '9' components constituting the first encryption matrix from the first encryption matrix and feed them back to the battery pack control device 110 while transmitting '. A first feedback command may be transmitted.

At this time, according to an embodiment of the present invention, the user terminal 140 pre-stores the mapping matrix in memory, and the first encryption matrix and the first feedback command are received from the battery pack control device 110. When received, a Hadamard product between the first encryption matrix and the mapping matrix is calculated to generate an nxn-sized first operation matrix, and then 'of n ² components constituting the first operation matrix' t components other than 0' may be extracted as the t components for first authentication and fed back to the battery pack control device 110 .

Here, the Hadamard product means an operation of multiplying each component in a matrix of the same size, and when there are matrices of '[a b c]' and '[x y z]', if the Hadamard product of two matrices is calculated, the operation matrix for this can be expressed as '[ax by cz]'.

'이라고 하는 경우, 사용자 단말(140)의 메모리 상에는 상기 매핑 행렬인 '

'이 저장되어 있을 수 있다.For example, as in the above example, let n be '3' and t be '4', and the mapping matrix '

', in the memory of the user terminal 140, the mapping matrix '

' may be stored.

'가 전송되면서, 상기 제1 암호화 행렬로부터, 상기 제1 암호화 행렬을 구성하는 '9'개의 성분들 중 '4'개의 인증용 성분들을 추출하여 배터리 팩 제어 장치(110)로 피드백할 것을 지시하는 제1 피드백 명령이 전송됨에 따라, 사용자 단말(140)에 상기 제1 암호화 행렬과 상기 제1 피드백 명령이 수신되었다고 하는 경우, 사용자 단말(140)은 상기 제1 암호화 행렬인 '

'와 상기 매핑 행렬인 '

' 간의 아다마르 곱을 연산하여, '3 x 3' 크기의 제1 연산 행렬을 '

'과 같이 생성할 수 있다.In addition, as in the above-described example, the first encryption matrix ''

' is transmitted, instructing to extract '4' components for authentication among the '9' components constituting the first encryption matrix from the first encryption matrix and feed them back to the battery pack control device 110. As the first feedback command is transmitted, when it is assumed that the first encryption matrix and the first feedback command have been received by the user terminal 140, the user terminal 140 receives the first encryption matrix '

' and the mapping matrix '

' Calculate the Hadamard product between '3 x 3' first operation matrix '

' can be created.

'을 구성하는 '9'개의 성분들 중 '0'이 아닌 성분들이 'P1, P2, P3, P4' 이므로, 사용자 단말(140)은 상기 제1 연산 행렬로부터, 'P1, P2, P3, P4'를 '4'개의 제1 인증용 성분들로 추출하여, 배터리 팩 제어 장치(110)로 피드백할 수 있다.At this time, the first operation matrix '

Since the components other than '0' among the '9' components constituting 'P1, P2, P3, P4' are 'P1, P2, P3, P4', the user terminal 140 calculates 'P1, P2, P3, P4' from the first operation matrix. ' may be extracted as '4' components for first authentication and fed back to the battery pack control device 110 .

In this way, after the first encryption matrix and the first feedback command are transmitted to the user terminal 140 by the first feedback command transmitter 119, in response to the first feedback command, the user terminal 140 , t first authentication components among n ² components constituting the first encryption matrix (the t first authentication components are the mapping among n ² components constituting the first encryption matrix) When components located at a point corresponding to the point at which the component '1' in the matrix is located) are extracted and fed back, the blocking control performing unit 120 converts the t first authentication components to the t first authentication components. Compared with the authentication codes, if it is confirmed that all of the t first authentication components match the t first authentication codes, after the authentication of the user terminal 140 is completed, the unblocking carry out control

For example, as in the foregoing example, the user terminal 140 extracts 'P1, P2, P3, P4' from the first calculation matrix as '4' components for first authentication, and the battery pack control device 110 ), it is assumed that 'P1, P2, P3, and P4', which are '4' first authentication components, are fed back to the battery pack control device 110.

At this time, according to the above-described example, since the '4' first authentication codes are 'P1, P2, P3, P4', the blocking control performing unit 120 sets the '4' first authentication components to '4'. Compared with the 'number of first authentication codes,' it can be confirmed that all of the '4' first authentication components match the '4' number of first authentication codes.

In relation to this, the fact that all of the '4' first authentication components match the '4' first authentication codes is pre-shared with the battery pack control device 110 in the memory of the user terminal 140 and Since it means that the mapping matrix is stored, the cut-off control execution unit 120 completes the authentication of the user terminal 140, and then cuts off the power supply of the battery pack to the agricultural electric vehicle. Supply cut-off control can be performed.

In this way, as the power supply cutoff control is performed by the cutoff control unit 111, when the power supply of the battery pack to the agricultural electric vehicle is cut off, the cutoff result message transmitter 112 transmits the cutoff result message to the agricultural electric vehicle. A cutoff result message indicating that power supply is cut off is generated and transmitted to the user terminal 140 .

In this way, when power supply to the agricultural electric vehicle is cut off, the agricultural electric vehicle is in a state in which it can no longer be started. Therefore, when the electric vehicle for agriculture is stolen, the user can prevent the thief from unauthorizedly using the electric vehicle for agriculture by using the user terminal 140 to cut off power supply to the electric vehicle for agriculture. .

According to an embodiment of the present invention, after the power supply to the agricultural electric vehicle is cut off according to the above-described process, the user recovers the stolen agricultural electric vehicle, and the battery pack is transferred to the agricultural electric vehicle. When a situation in which power supply is to be resumed occurs, the user commands the battery pack control device 110 using the user terminal 140 to release the cut-off command to release the cut-off of the power supply to the agricultural electric vehicle. can transmit.

In this way, after the blocking result message is transmitted to the user terminal 140, the user terminal 140 instructs the battery pack control device 110 to release the blocking of power supply to the agricultural electric vehicle. When the command is received, the unblocking performer 113 performs authentication on the user terminal 140, and when the authentication on the user terminal 140 is completed, the power supply of the battery pack to the agricultural electric vehicle Block release control for supplying power to the agricultural electric vehicle by releasing the block is performed.

At this time, according to an embodiment of the present invention, the block release performer 113 is a specific configuration for performing authentication on the user terminal 140, the second authentication event generator 121, the second random generator 122, a second encryption matrix generator 123, a second feedback command transmission unit 124, and a blocking release control execution unit 125.

After the blocking result message is transmitted to the user terminal 140 by the blocking result message transmission unit 112, the second authentication event generating unit 121 receives the unblocking command from the user terminal 140. A second authentication event for performing authentication of the terminal 140 is generated.

When the second authentication event is generated by the second authentication event generating unit 121, the second random generator 122 randomly generates t second authentication codes and n ² -t second dummy codes. do.

When the t second authentication codes and the n ² -t second dummy codes are generated by the second random generator 122, the second encryption matrix generator 123 determines, from the mapping matrix, the mapping matrix Among the n ² components constituting , t components designated with '1' are replaced one by one with the t second authentication codes, and n ² -t elements designated with '0' are replaced, By replacing one by one with n ² -t second dummy codes, an n×n second encryption matrix is generated.

When the second encryption matrix is generated by the second encryption matrix generator 123, the second feedback command transmission unit 124 transmits the second encryption matrix to the user terminal 140, while the second encryption matrix is generated. From the matrix, of the n ² elements constituting the second encryption matrix, A second feedback command instructing to extract t components for authentication and feed them back to the battery pack control device 110 is transmitted.

In this case, according to an embodiment of the present invention, the user terminal 140 receives the second encryption matrix and the second feedback command from the battery pack control device 110, the second encryption matrix and the mapping matrix. After generating an nxn-sized second operation matrix by calculating the Hadamard product of , t elements other than '0' among the n ² elements constituting the second operation matrix are selected as the t second authentication components. It can be extracted as , and fed back to the battery pack control device 110 .

In this way, after the second encryption matrix and the second feedback command are transmitted to the user terminal 140 by the second feedback command transmitter 124, in response to the second feedback command, the user terminal 140 , t second authentication components among n ² components constituting the second encryption matrix (the t second authentication components are the mapping among n ² components constituting the second encryption matrix) When the components located at the point corresponding to the point at which the component '1' in the matrix is located) are extracted and fed back, the blocking release control performing unit 125 converts the t second authentication components to the t second authentication components. Compared with the 2 authentication codes, if it is confirmed that all of the t second authentication components match the t second authentication codes, after the authentication of the user terminal 140 is completed, the blocking Perform release control.

Here, the second authentication event generation unit 121, the second random generation unit 122, the second encryption matrix generation unit 123, the second feedback command transmission unit 124, and the unblocking control execution unit 125 The process of performing authentication on the user terminal 140 includes the above-described first authentication event generator 116, first random generator 117, first encryption matrix generator 118, and first feedback command transmission. Since the process of performing authentication for the user terminal 140 by the unit 119 and the blocking control unit 120 is the same, a detailed description thereof will be omitted.

After the authentication of the user terminal 140 is completed by the blocking release control unit 113, the block release result message transmission unit 114 performs the block release control, so that the power of the battery pack for the agricultural electric vehicle When the blocking of supply is released, a blocking release result message indicating that the blocking of power supply to the agricultural electric vehicle is released is generated and transmitted to the user terminal 140 terminal.

In this way, in the battery pack control device 110 according to the present invention, the user cuts off power supply to the agricultural electric vehicle using the user terminal 140, or the power of the battery pack to the agricultural electric vehicle We can help you unblock the supply.

According to an embodiment of the present invention, the battery pack control device 110 determines whether the battery pack is in a charging state based on the state of charge of the battery pack, and determines whether the battery pack is in a charging state. When it is determined that the battery charging recommendation message is transmitted to the user terminal 140, a configuration for supporting the user to charge the battery pack in a timely manner may be further included.

In this regard, according to an embodiment of the present invention, the battery pack control device 110 further includes an information collection unit 126, a norm calculation unit 127, a determination unit 128, and a charging recommendation message transmission unit 129. can include

The information collection unit 126 collects information on the state of charge of the battery pack at predetermined periodic intervals through a battery management system (BMS) included in the battery pack.

Here, the SOC information of the battery pack includes a measured value of a charging rate of each of k (k is a natural number equal to or greater than 2) constituting the battery pack.

The norm operation unit 127 calculates the charge rate of each of the k battery cells included in the SOC information of the battery pack whenever the SOC information of the battery pack is collected by the information collection unit 126 at the periodic interval. After generating a k-dimensional state vector having a measured value for , the Euclidean norm of the state vector is calculated.

Here, the Euclidean norm is the L2 norm representing the magnitude of a vector or matrix in Euclidean space, and can be expressed as in Equation 1 below.

가 유클리드 노름,

는 벡터 또는 행렬의 k번째 성분을 의미한다.In Equation 1 above,

Ga Euclidean Norm,

means the k-th element of a vector or matrix.

When the Euclid norm is calculated by the norm operation unit 127, the determination unit 128 compares the Euclid norm with a preset charging recommendation reference value, and if it is confirmed that the Euclid norm is less than the charging recommendation reference value, the battery pack It is judged that this is a situation that needs to be charged.

Hereinafter, operations of the information collection unit 126, the norm operation unit 127, and the determination unit 128 will be described in detail by way of example.

First, when the preset charging recommendation standard value is set to '100' and the preset cycle is set to '10 minutes', the information collection unit 126 provides charge state information of the battery pack through the BMS included in the battery pack. can be collected at intervals of '10 minutes'.

At this time, the norm operation unit 127 whenever the information collection unit 126 collects the SOC information of the battery pack at intervals of '10 minutes', '6' batteries included in the SOC information of the battery pack A '6'-dimensional state vector having a measured value of the charging rate of each cell as a component may be generated.

In this regard, '6' batteries such as '35 (%), 38 (%), 40 (%), 32 (%), 37 (%), 30 (%)' by the information collection unit 126 Assume that information on the state of charge of the battery pack having a measured value of the charge rate of each cell as a component is collected.

Then, the norm operation unit 127 is a '6'-dimensional state vector having '35 (%), 38 (%), 40 (%), 32 (%), 37 (%), 30 (%)' as components. After generating '[35 38 40 32 37 30]', the Euclidean norm of the state vector can be calculated as '86.96' according to Equation 1 above.

Then, the determination unit 128 compares the Euclid norm with '100', which is the charging recommendation reference value, and can confirm that the Euclid norm is less than the charging recommendation value.

Then, the determination unit 128 may determine that the battery pack is not sufficiently charged, and determines that the battery pack is in a situation where it needs to be charged.

On the other hand, in the battery pack used as the driving power source of the agricultural electric vehicle, even if the charge rate of the entire battery pack is sufficiently high, the balance between the k battery cells constituting the battery pack is out of order, and the k batteries As overdischarge occurs in a specific battery cell among cells, a charge rate of the specific battery cell may be relatively lower than that of the other battery cells. In this case, a problem may occur in that only some battery cells having a low charge rate are quickly discharged in the battery pack. According to an embodiment of the present invention, the determination unit 128 is configured to prevent such a problem, and 130, a similarity calculating unit 131 and a similarity determining unit 132 may be included.

When the permutation vector generation unit 130 determines through the determination unit 128 that the Euclidean norm is equal to or greater than the charging recommendation standard value, the permutation vector generator 130 has the smallest value among the k components constituting the state vector. By replacing the components with '0', a k-dimensional substitution vector is generated.

The similarity calculator 131 calculates a cosine similarity between the permutation vector and the state vector.

In this case, the cosine similarity may be calculated based on Equation 2 below.

In Equation 1, S is the cosine similarity between vector A and vector B, and has a value between -1 and 1, A _i denotes the i-th component of vector A, and B _i denotes the i-th component of vector B. do. In this regard, the greater the cosine similarity between two vectors, the more similar the two vectors are to each other.

The similarity determination unit 132 compares the cosine similarity with a preset reference similarity, and when it is determined that the cosine similarity is equal to or greater than the reference similarity, even when it is determined that the Euclidean norm is equal to or greater than the charging recommendation reference value, the battery pack It is judged that this is a situation that needs to be charged.

Hereinafter, operations of the permutation vector generator 130, the similarity calculation unit 131, and the similarity determination unit 132 will be described in detail by way of example.

First, as in the above example, the charging recommendation reference value is set to '100', and '67 (%), 65 (%), 70 (%), 71 (%), 68 It is said that the SOC information of the battery pack, which has as a component the measured value of the charge rate of each of '6' battery cells, such as '(%) and 30 (%)', is collected. Accordingly, the norm operation unit 127 , '6' dimension state vector is generated as '[67 65 70 71 68 30]', and the Euclidean norm of the state vector is calculated as '155.50'.

Then, the determination unit 128 compares the Euclid norm with the recommended charge value of '100' and confirms that the Euclid norm exceeds the recommended charge value, thereby confirming that the battery pack is sufficiently charged. will be.

However, since the charge rate of the 6th battery cell among the '6' battery cells is '30 (%)', which is relatively more discharged than other battery cells, the battery pack is used as it is in the agricultural electric vehicle. If so, a problem may occur in that the sixth battery cell is discharged before other battery cells.

Therefore, in order to prevent this problem, first, the permutation vector generator 130 selects the smallest of '6' components constituting the state vector in '[67 65 70 71 68 30]', which is the state vector. By substituting '30', which is a component having a value, with '0', a '6'-dimensional substitution vector can be generated as '[67 65 70 71 68 0]'.

Then, the similarity calculation unit 131 determines the cosine similarity between the permutation vector '[67 65 70 71 68 0]' and the state vector '[67 65 70 71 68 30]' according to Equation 2 above. It can be calculated like 0.98'.

At this time, when the preset standard similarity is '0.95', the similarity determining unit 132 compares the cosine similarity '0.98' with the standard similarity and confirms that the cosine similarity is equal to or greater than the standard similarity.

Then, even when it is confirmed that the Euclid norm is equal to or greater than the recommended charging reference value, the similarity determining unit 132 may determine that the battery pack is in a charging situation.

Here, the cosine similarity refers to an index representing numerically how low a charge rate of a battery cell having the lowest charge rate among the k battery cells is relative to an overall charge rate of the remaining battery cells. That is, when the charging rate of a specific battery cell corresponding to a component substituted with '0' in the permutation vector among the k battery cells is relatively significantly lower than the overall charging rate of the other battery cells, the cosine similarity is calculated as a large value , the cosine similarity may be calculated as a small value when the charging rate of the specific battery cell does not have a relatively large difference when compared to the overall charging rate of the other battery cells. Accordingly, when the cosine similarity is greater than or equal to the reference similarity, it can be considered that the charging rate of a specific battery cell having the lowest charging rate among the k battery cells is significantly lower than that of the remaining battery cells, and thus the similarity is determined. The unit 132 may determine that the battery pack needs to be charged in order to prevent only the specific battery cell from being discharged first even when the charging rate of the entire battery pack is appropriate.

In this way, when it is determined by the determination unit 128 that the battery pack needs to be charged, the charging recommendation message transmission unit 129 generates a charging recommendation message instructing to charge the battery pack, and the user terminal 140 ) is sent to

That is, the battery pack control device 110 determines that the battery pack is not sufficiently charged, or even if the battery pack is sufficiently charged, the charge rates of the battery cells of which the charge rates of the specific battery cells are different from among the k number of battery cells. If it is confirmed that the battery pack is much lower than that of the battery pack, it is possible to support the user to charge the battery pack in a timely manner by transmitting the battery charging recommendation message to the user terminal 130 .

2 is a flowchart illustrating an operating method of a battery pack control device mounted on an agricultural electric vehicle according to an embodiment of the present invention and controlling power supply of a battery pack used as a driving power source of the agricultural electric vehicle.

In step S210, when a power supply cutoff command instructing to cut off power supply to the agricultural electric vehicle is received from the user terminal, the user terminal is authenticated, and when the user terminal is authenticated, Power supply cut-off control is performed to cut off the power supply of the battery pack to the agricultural electric vehicle.

In step S220, when the power supply to the agricultural electric vehicle is cut off as the power supply cutoff control is performed, a cutoff result message indicating that the power supply to the agricultural electric vehicle is cut off is generated transmitted to the user terminal.

In step S230, after the blocking result message is transmitted to the user terminal, when a blocking release command instructing to release the blocking of power supply to the agricultural electric vehicle is received from the user terminal, the user terminal After authentication is performed for the user terminal, when the authentication for the user terminal is completed, unblocking of power supply to the agricultural electric vehicle of the battery pack is released to perform unblocking control for supplying power to the agricultural electric vehicle.

In step S240, when the blocking of the power supply to the agricultural electric vehicle is released as the blocking release control is performed, the blocking release result indicating that the blocking of the electric vehicle for agriculture has been released. A message is generated and transmitted to the user terminal.

At this time, according to an embodiment of the present invention, the operation method of the battery pack control device is an nxn (n is a natural number equal to or greater than 2) size mapping matrix (the mapping matrix is '1' and A matrix composed of '0' components, in which t (t is a natural number greater than or equal to 2 and less than n ² ) components among the n ² components constituting the mapping matrix are designated as '1', and the remaining n ² - The method may further include maintaining a mapping matrix storage unit in which t elements are designated as '0'.

At this time, in step S210, when the power supply cutoff command is received from the user terminal, generating a first authentication event for performing authentication on the user terminal. When the first authentication event occurs, the user Randomly generating t first authentication codes and n ² -t first dummy codes for authenticating the terminal, the t first authentication codes and the n ² -t first dummy codes When the codes are generated, in the mapping matrix, t elements designated with '1' among n ² elements constituting the mapping matrix are replaced one by one with the t first authentication codes, and '0' generating a first encryption matrix having a size of nxn by substituting the designated n ² -t components one by one with the n ² -t first dummy codes; While transmitting the first encryption matrix to the user terminal, t components for authentication among n ² components constituting the first encryption matrix are extracted from the first encryption matrix and fed back to the battery pack control device. and after the first encryption matrix and the first feedback command are transmitted to the user terminal, in response to the first feedback command, from the user terminal, the first feedback command t first authentication components among n ² components constituting the encryption matrix (the t first authentication components are '1' in the mapping matrix among n ² components constituting the first encryption matrix) ' components located at a point corresponding to the point at which the component is located) are extracted and fed back, the t first authentication components are compared with the t first authentication codes, and the t first authentication codes are obtained. When it is confirmed that all of the components match the t number of first authentication codes, the step of performing the power supply cut-off control after completing authentication of the user terminal.

At this time, in step (S230), after the blocking result message is transmitted to the user terminal, when the unblocking command is received from the user terminal, generating a second authentication event for performing authentication of the user terminal. , if the second authentication event occurs, randomly generating t second authentication codes and n ² -t second dummy codes, the t second authentication codes and n ² -t second dummy codes When dummy codes are generated, in the mapping matrix, t elements designated with '1' among n ² elements constituting the mapping matrix are replaced one by one with the t second authentication codes, and '0 generating a second encryption matrix having a size of nxn by replacing the n ² -t components designated by ' with the n ² -t second dummy codes one by one; when the second encryption matrix is generated, While transmitting the second encryption matrix to the user terminal, from the second encryption matrix, among n ² components constituting the second encryption matrix, Transmitting a second feedback command instructing extracting t components for authentication and feeding them back to the battery pack control device, and after the second encryption matrix and the second feedback command are transmitted to the user terminal, the In response to the second feedback command, t second authentication components among the n ² components constituting the second encryption matrix (the t second authentication components are the second encryption matrix If components located at a point corresponding to the point at which the component '1' in the mapping matrix is located among n ² components constituting ) are extracted and fed back, the t second authentication components are Compared with the second authentication codes, if it is confirmed that the t second authentication components match all of the t second authentication codes, after the authentication of the user terminal is completed, the blocking It may include performing release control.

At this time, according to an embodiment of the present invention, the user terminal may pre-store the mapping matrix in memory, and when the first encryption matrix and the first feedback command are received from the battery pack control device, , After calculating the Hadamard product between the first encryption matrix and the mapping matrix to generate an nxn-sized first operation matrix, t elements other than '0' among n ² elements constituting the first operation matrix are extracted into the t first authentication components and fed back to the battery pack control device, and when the second encryption matrix and the second feedback command are received from the battery pack control device, the second encryption matrix After generating a second operation matrix having an nxn size by calculating the Hadamard product between and the mapping matrix, t elements other than '0' among the n ² elements constituting the second operation matrix, the t number 2 components for authentication may be extracted and fed back to the battery pack control device.

In addition, according to an embodiment of the present invention, the operating method of the battery pack control device includes the charge state information of the battery pack (the charge state information of the battery pack is the Collecting at predetermined periodic intervals, including a measured value of the charge rate of each of the constituent k (k is a natural number equal to or greater than 2) battery cells, wherein SOC information of the battery pack is collected at the periodic interval. generating a k-dimensional state vector having as a component a measured value of the charging rate of each of the k battery cells included in the state of charge information of the battery pack, and then calculating a Euclidean norm of the state vector; When the Euclid norm is calculated, comparing the Euclid norm with a preset charging recommendation reference value, and determining that the battery pack is in a charging situation when it is confirmed that the Euclid norm is less than the charging recommendation reference value, the battery The method may further include generating a charging recommendation message instructing to charge the battery pack and transmitting the message to the user terminal when it is determined that the battery pack is to be charged.

At this time, according to an embodiment of the present invention, the step of determining that the battery pack is in a charging situation is when the Euclid norm is compared with the charging recommendation reference value and it is confirmed that the Euclid norm is equal to or greater than the charging recommendation reference value. , generating a k-dimensional permutation vector by substituting '0' for a component having the smallest value among k components constituting the state vector in the state vector, the cosine between the permutation vector and the state vector Computing the similarity and comparing the cosine similarity with a preset reference similarity, and when it is determined that the cosine similarity is equal to or greater than the reference similarity, even when the Euclidean norm is determined to be equal to or greater than the charging recommendation reference value, the battery pack A step of determining that the battery is in a situation to be charged may be included.

In the above, the operating method of the battery pack control device for controlling the power supply of the battery pack used as the driving power source of the agricultural electric vehicle according to an embodiment of the present invention has been described with reference to FIG. 2 . Here, since the operation method of the battery pack control device according to an embodiment of the present invention may correspond to the configuration of the operation of the battery pack control device 110 described with reference to FIG. 1, a detailed description thereof will be omitted. do it with

An operating method of a battery pack control device for controlling power supply of a battery pack used as a driving power source of an agricultural electric vehicle according to an embodiment of the present invention is implemented as a computer program stored in a storage medium for execution through combination with a computer It can be.

In addition, the method of operating a battery pack control device for controlling power supply of a battery pack used as a driving power source of an agricultural electric vehicle according to an embodiment of the present invention is implemented in the form of program commands that can be executed through various computer means. It can be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the medium may be those specially designed and configured for the present invention or those known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler.

As described above, the present invention has been described by specific details such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , Those skilled in the art in the field to which the present invention belongs can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims belong to the scope of the present invention. .

110: A battery pack control device that controls power supply of a battery pack used as a driving power source for an agricultural electric vehicle
111: blocking control unit 112: blocking result message transmission unit
113: block release control unit 114: block release result message transmission unit
115: mapping matrix storage unit 116: first authentication event generating unit
117: first random generator 118: first encryption matrix generator
119: first feedback command transmission unit 120: blocking control execution unit
121: second authentication event generator 122: second random generator
123: second encryption matrix generation unit 124: second feedback command transmission unit
125: Unblocking control execution unit 126: Information collection unit
127: norm calculation unit 128: judgment unit
129: charging recommendation message transmission unit 130: replacement vector generation unit
131: similarity calculating unit 132: similarity determining unit
140: user terminal

Claims (12)

A battery pack control device mounted on an agricultural electric vehicle and controlling power supply of a battery pack used as a driving power source of the agricultural electric vehicle,
When a power supply cutoff command instructing to cut off power supply to the agricultural electric vehicle is received from the user terminal, authentication of the user terminal is performed, and when authentication of the user terminal is completed, the battery pack A cut-off control unit that performs power supply cut-off control for cutting off the power supply to the agricultural electric vehicle;
As the power supply cut-off control is performed, when the power supply of the battery pack to the agricultural electric vehicle is cut off, a cutoff result message indicating that the power supply to the agricultural electric vehicle is cut off is generated and transmitted to the user terminal. a blocking result message transmission unit;
After the blocking result message is transmitted to the user terminal, when a blocking release command instructing to unblock the power supply to the agricultural electric vehicle is received from the user terminal, authentication of the user terminal is performed When authentication of the user terminal is completed, an unblocking control unit that unblocks power supply of the battery pack to the agricultural electric vehicle and performs unblocking control for supplying power to the agricultural electric vehicle; and
As the blocking release control is performed, when the blocking of the power supply to the agricultural electric vehicle of the battery pack is released, a blocking release result message indicating that the blocking of the agricultural electric vehicle is released to generate the Block release result message transmission unit to be transmitted to the user terminal
Battery pack control device comprising a. According to claim 1,
A mapping matrix of size nxn (where n is a natural number equal to or greater than 2) previously shared with the user terminal - the mapping matrix is a matrix composed of '1' and '0' components, and n constituting the mapping matrix Of ^{the two} components, t (t is a natural number greater than or equal to 2 and less than n ² ) components are designated as '1', and the remaining n ² -t components are designated as '0'. matrix storage
Including more,
The blocking control unit
a first authentication event generating unit configured to generate a first authentication event for performing authentication on the user terminal when the power supply cutoff command is received from the user terminal;
a first random generator randomly generating t first authentication codes and n ² -t first dummy codes to authenticate the user terminal when the first authentication event occurs;
When the t first authentication codes and the n ² -t first dummy codes are generated, in the mapping matrix, t elements to which '1' is designated among n ² elements constituting the mapping matrix are replaced with the t first authentication codes one by one, and n ² -t elements designated with '0' are replaced with the n ² -t first dummy codes one by one, thereby obtaining an nxn-sized first authentication code. a first encryption matrix generator for generating 1 encryption matrix;
When the first encryption matrix is generated, while transmitting the first encryption matrix to the user terminal, from the first encryption matrix, t authentication components among n ² components constituting the first encryption matrix a first feedback command transmitter for transmitting a first feedback command instructing to extract and feed back the battery pack control device; and
After the first encryption matrix and the first feedback command are transmitted to the user terminal, in response to the first feedback command, from the user terminal, t of n ² components constituting the first encryption matrix n elements for first authentication - the t elements for first authentication are located at a point corresponding to a point where component '1' in the mapping matrix is located among n ² components constituting the first encryption matrix are extracted and fed back, the t first authentication components are compared with the t first authentication codes, and the t first authentication components are all the t first authentication codes. If it is confirmed that they match, a cut-off control performing unit for performing the power supply cut-off control after completing authentication for the user terminal.
Including,
The block release control unit
After the blocking result message is transmitted to the user terminal, when the unblocking command is received from the user terminal, a second authentication event generating unit generating a second authentication event for performing authentication of the user terminal;
a second random generator randomly generating t second authentication codes and n ² -t second dummy codes when the second authentication event occurs;
When the t second authentication codes and n ² -t second dummy codes are generated, in the mapping matrix, t elements to which '1' is designated among the n ² elements constituting the mapping matrix are generated. ^{. _} a second encryption matrix generating unit generating an encryption matrix;
When the second encryption matrix is generated, while transmitting the second encryption matrix to the user terminal, from the second encryption matrix, among n ² components constituting the second encryption matrix, a second feedback command transmitting unit configured to transmit a second feedback command instructing to extract t authentication components and feed them back to the battery pack control device; and
After the second encryption matrix and the second feedback command are transmitted to the user terminal, t of n ² components constituting the second encryption matrix from the user terminal in response to the second feedback command n second authentication components - The t second authentication components are at a point corresponding to a point where the '1' component in the mapping matrix is located among n ² components constituting the second encryption matrix When - is extracted and fed back, the t second authentication components are compared with the t second authentication codes, and the t second authentication components are determined by comparing the t second authentication codes with the t second authentication codes. If it is confirmed that all match, the unblocking control performing unit performing the unblocking control after completing authentication for the user terminal.
Battery pack control device comprising a. According to claim 2,
The user terminal
If the mapping matrix is prestored in a memory and the first encryption matrix and the first feedback command are received from the battery pack control device, Hadamard product between the first encryption matrix and the mapping matrix ) to generate a first operation matrix of size nxn, and then t elements other than '0' among the n ² elements constituting the first operation matrix are used as the t elements for first authentication. is extracted and fed back to the battery pack control device, and when the second encryption matrix and the second feedback command are received from the battery pack control device, a Hadamard product between the second encryption matrix and the mapping matrix is calculated to have an nxn size. After generating a second calculation matrix of , t components other than '0' among n ² components constituting the second calculation matrix are extracted as the t second authentication components to control the battery pack. Battery pack control device characterized in that the feedback to the device. According to claim 1,
Through a battery management system (BMS) included in the battery pack, SOC information of the battery pack - SOC information of the battery pack is each of k (k is a natural number equal to or greater than 2) number of battery cells constituting the battery pack. an information collection unit that collects a measured value for a charging rate of - at preset periodic intervals;
Whenever the SOC information of the battery pack is collected at the periodic interval, a k-dimensional state vector having as components a measured value of the charging rate of each of the k battery cells included in the SOC information of the battery pack is generated. After that, a norm calculation unit calculating a Euclidean norm of the state vector;
a determination unit that compares the Euclid norm with a preset charging recommendation reference value when the Euclid norm is calculated, and determines that the battery pack is in a charging situation when it is determined that the Euclid norm is less than the charging recommendation reference value; and
If it is determined that the battery pack needs to be charged, a charging recommendation message transmission unit generating a charging recommendation message instructing to charge the battery pack and transmitting the generated charging recommendation message to the user terminal.
Battery pack control device further comprising a. According to claim 4,
The judge
The Euclidean norm is compared with the charging recommendation reference value, and when it is confirmed that the Euclid norm is equal to or greater than the charging recommendation reference value, the component having the smallest value among the k components constituting the state vector is selected from the state vector ' a substitution vector generator for generating a k-dimensional substitution vector by substituting 0';
a similarity calculating unit calculating a cosine similarity between the permutation vector and the state vector; and
If the cosine similarity is compared with a preset reference similarity and it is confirmed that the cosine similarity is equal to or greater than the reference similarity, even when it is determined that the Euclidean norm is equal to or greater than the charging recommendation reference value, the battery pack is considered to be in a charging situation. Similarity Judging Unit
Battery pack control device comprising a. In the operating method of a battery pack control device mounted on an agricultural electric vehicle and controlling power supply of a battery pack used as a driving power source of the agricultural electric vehicle,
When a power supply cutoff command instructing to cut off power supply to the agricultural electric vehicle is received from the user terminal, authentication of the user terminal is performed, and when authentication of the user terminal is completed, the battery pack performing power supply cut-off control to cut off power supply to the agricultural electric vehicle;
As the power supply cut-off control is performed, when the power supply of the battery pack to the agricultural electric vehicle is cut off, a cutoff result message indicating that the power supply to the agricultural electric vehicle is cut off is generated and transmitted to the user terminal. doing;
After the blocking result message is transmitted to the user terminal, when a blocking release command instructing to unblock the power supply to the agricultural electric vehicle is received from the user terminal, authentication of the user terminal is performed , When authentication of the user terminal is completed, performing unblocking control for supplying power to the agricultural electric vehicle by unblocking the power supply of the battery pack to the agricultural electric vehicle; and
As the blocking release control is performed, when the blocking of the power supply to the agricultural electric vehicle of the battery pack is released, a blocking release result message indicating that the blocking of the agricultural electric vehicle is released to generate the Step of transmitting to user terminal
A method of operating a battery pack control device comprising a. According to claim 6,
A mapping matrix of size nxn (where n is a natural number equal to or greater than 2) previously shared with the user terminal - the mapping matrix is a matrix composed of '1' and '0' components, and n constituting the mapping matrix Of ^{the two} components, t (t is a natural number greater than or equal to 2 and less than n ² ) components are designated as '1', and the remaining n ² -t components are designated as '0'. maintaining matrix storage
Including more,
The step of performing power supply cutoff control for cutting off the power supply of the battery pack to the agricultural electric vehicle
generating a first authentication event for performing authentication on the user terminal when the power supply cutoff command is received from the user terminal;
randomly generating t first authentication codes and n ² -t first dummy codes for performing authentication on the user terminal when the first authentication event occurs;
When the t first authentication codes and the n ² -t first dummy codes are generated, in the mapping matrix, t elements to which '1' is designated among n ² elements constituting the mapping matrix are replaced with the t first authentication codes one by one, and n ² -t elements designated with '0' are replaced with the n ² -t first dummy codes one by one, thereby obtaining an nxn-sized first authentication code. 1 Generating an encryption matrix;
When the first encryption matrix is generated, while transmitting the first encryption matrix to the user terminal, from the first encryption matrix, t authentication components among n ² components constituting the first encryption matrix transmitting a first feedback command instructing extraction and feedback to the battery pack control device; and
After the first encryption matrix and the first feedback command are transmitted to the user terminal, in response to the first feedback command, from the user terminal, t of n ² components constituting the first encryption matrix n elements for first authentication - the t elements for first authentication are located at a point corresponding to a point where component '1' in the mapping matrix is located among n ² components constituting the first encryption matrix are extracted and fed back, the t first authentication components are compared with the t first authentication codes, and the t first authentication components are all the t first authentication codes. If it is confirmed that they match, performing the power supply cut-off control after completing authentication for the user terminal.
Including,
The step of performing block release control for supplying power to agricultural electric vehicles is
generating a second authentication event for authentication of the user terminal when the blocking release command is received from the user terminal after the blocking result message is transmitted to the user terminal;
randomly generating t second authentication codes and n ² -t second dummy codes when the second authentication event occurs;
When the t second authentication codes and n ² -t second dummy codes are generated, in the mapping matrix, t elements to which '1' is designated among the n ² elements constituting the mapping matrix are generated. ^{. _} generating an encryption matrix;
When the second encryption matrix is generated, while transmitting the second encryption matrix to the user terminal, from the second encryption matrix, among n ² components constituting the second encryption matrix, transmitting a second feedback command instructing extracting t authentication components and feeding them back to the battery pack control device; and
After the second encryption matrix and the second feedback command are transmitted to the user terminal, t of n ² components constituting the second encryption matrix from the user terminal in response to the second feedback command n second authentication components - The t second authentication components are at a point corresponding to a point where the '1' component in the mapping matrix is located among n ² components constituting the second encryption matrix When - is extracted and fed back, the t second authentication components are compared with the t second authentication codes, and the t second authentication components are determined by comparing the t second authentication codes with the t second authentication codes. If it is confirmed that all of them match, performing the blocking release control after completing authentication for the user terminal.
Method of operating a battery pack control device comprising a. According to claim 7,
The user terminal
If the mapping matrix is prestored in a memory and the first encryption matrix and the first feedback command are received from the battery pack control device, Hadamard product between the first encryption matrix and the mapping matrix ) to generate a first operation matrix of size nxn, and then t elements other than '0' among the n ² elements constituting the first operation matrix are used as the t elements for first authentication. is extracted and fed back to the battery pack control device, and when the second encryption matrix and the second feedback command are received from the battery pack control device, a Hadamard product between the second encryption matrix and the mapping matrix is calculated to have an nxn size. After generating a second calculation matrix of , t components other than '0' among n ² components constituting the second calculation matrix are extracted as the t second authentication components to control the battery pack. An operating method of a battery pack control device, characterized in that the feedback to the device. According to claim 6,
Through a battery management system (BMS) included in the battery pack, SOC information of the battery pack - SOC information of the battery pack is each of k (k is a natural number equal to or greater than 2) number of battery cells constituting the battery pack. Collecting at predetermined periodic intervals - containing a measured value for a charging rate of ;
Whenever the SOC information of the battery pack is collected at the periodic interval, a k-dimensional state vector having as components a measured value of the charging rate of each of the k battery cells included in the SOC information of the battery pack is generated. After that, calculating a Euclidean norm of the state vector;
When the Euclid norm is calculated, comparing the Euclid norm with a preset charging recommendation reference value, and determining that the battery pack is in a charging situation when it is determined that the Euclid norm is less than the charging recommendation reference value; and
generating and transmitting a charging recommendation message instructing to charge the battery pack to the user terminal when it is determined that the battery pack needs to be charged;
Method of operating a battery pack control device further comprising a. According to claim 9,
Determining that the battery pack is in a situation to be charged
The Euclidean norm is compared with the charging recommendation reference value, and when it is confirmed that the Euclid norm is equal to or greater than the charging recommendation reference value, the component having the smallest value among the k components constituting the state vector is selected from the state vector ' generating a k-dimensional substitution vector by substituting 0';
calculating a cosine similarity between the permutation vector and the state vector; and
If the cosine similarity is compared with a preset reference similarity and it is confirmed that the cosine similarity is equal to or greater than the reference similarity, even when it is determined that the Euclidean norm is equal to or greater than the charging recommendation reference value, the battery pack is considered to be in a charging situation. stage of judgment
A method of operating a battery pack control device comprising a. A computer-readable recording medium recording a computer program for executing the method of any one of claims 6 to 10 through a combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 6 to 10 through a combination with a computer.

Images