How to replace the battery

Abstract

To provide a technology that can reduce the load on a vehicle for updating a program of the vehicle.SOLUTION: A method for replacing a battery includes the steps of: removing an old battery unit including an old battery and an old memory from a battery support portion of a vehicle; attaching a new battery unit including a new battery and a new memory to the battery support portion; and writing an update program for the vehicle into the new memory before attaching the new battery unit to the battery support portion.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This disclosure relates to a technology for replacing vehicle batteries.

Background Art

[0002] Patent Document 1 discloses a technology for updating software (program) of a vehicle. In this conventional technology, the program stored in the vehicle computer is updated by handshake communication in a state where an external computer storing the update software (program) is connected in parallel with the vehicle computer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when updating the program of a vehicle, an update program is obtained from a server via a communication device mounted on the vehicle. In this case, depending on the size of the capacity of the update program and the update frequency, there may be cases where the vehicle has to bear a large communication cost.

[0005] Consider vehicle-related facilities such as gasoline stations and charging stations scattered across various locations. If a device storing an update program is installed in the vehicle-related facility, the program of the vehicle can be updated using a wired connection or short-range communication between this device and the vehicle computer. With this method, the occurrence of communication costs can be avoided. However, with this method, the vehicle cannot leave the vehicle-related facility until the reception of the program is completed. Depending on the capacity of the update program, the waiting time at the vehicle-related facility may become long.

[0006] One of the purposes of this disclosure is to provide a technology that can reduce the burden on a vehicle for updating its program. [Means for solving the problem]

[0007] The inventors have found that the above problem can be solved by updating the vehicle's program at the same time as replacing the vehicle's battery in vehicle-related equipment. Therefore, aspects of this disclosure relate to a method for replacing a battery installed in a vehicle. A first aspect of this disclosure includes the steps of: removing an old battery unit, including the old battery and old memory, from the battery support of the vehicle; installing a new battery unit, including a new battery and new memory, into the battery support; and writing a vehicle-specific update program to the new memory before installing the new battery unit into the battery support.

[0008] The second aspect of this disclosure, in addition to the first aspect, further has the following features: The step of writing the update program to the new memory is performed before removing the old battery unit from the battery support.

[0009] A third aspect of this disclosure, in addition to the first or second aspect, further includes the following features: The battery replacement method further includes a step in which the vehicle requests an update to the onboard program. The update program is a program that updates a portion of the onboard program.

[0010] A fourth aspect of this disclosure, in addition to the first or second aspect, further has the following features: Vehicle identification information is stored in the old memory. The step of writing an update program to the new memory includes the steps of comparing the vehicle identification information with a list of vehicles scheduled for program updates, and selecting an update program corresponding to a vehicle based on the result of the comparison between the vehicle identification information and the list of vehicles scheduled for program updates.

[0011] The fifth aspect of this disclosure, in addition to the first or second aspect, further has the following features: The vehicle is a battery-swappable electric vehicle. [Effects of the Invention]

[0012] According to this disclosure, when a vehicle's battery unit is replaced, the update program corresponding to the vehicle is written to new memory before the new battery unit is installed in the battery support. When the battery unit is replaced, the vehicle does not need to bear communication costs for the program update. Furthermore, since the update program has already been written to new memory, the vehicle does not need to wait in vehicle-related equipment until the reception of the update program is complete. Therefore, it is possible to reduce the burden on the vehicle for updating its program. [Brief explanation of the drawing]

[0013] [Figure 1] This is a diagram illustrating the outline of the battery replacement method according to Embodiment 1. [Figure 2] This is a diagram illustrating a specific example of the first example of the battery replacement method according to Embodiment 1. [Figure 3] This figure illustrates a specific example of a second example of the battery replacement method according to Embodiment 1. [Figure 4] This flowchart shows an example of the battery replacement method according to Embodiment 1. [Figure 5] This is a diagram illustrating a specific example of a battery replacement method according to Embodiment 2. [Figure 6] This flowchart shows an example of the battery replacement method according to Embodiment 2. [Modes for carrying out the invention]

[0014] A method for replacing a battery according to an embodiment of this disclosure will be described with reference to the attached drawings. Furthermore, elements common to each figure are denoted by the same reference numerals, and redundant explanations are omitted.

[0015] 1. Embodiment 1 1-1. Overview FIG. 1(A) is a diagram for explaining the outline of the battery replacement system 1 for realizing Embodiment 1. As shown in FIG. 1(A), the battery replacement system 1 includes a vehicle 2, a battery replacement stand 3, and a server 4. The vehicle 2 is, for example, a vehicle having a secondary battery such as a lithium-ion battery as a driving source. Examples of vehicles having a secondary battery as a driving source include hybrid vehicles (HEV), plug-in hybrid vehicles (PHEV), and battery electric vehicles (BEV). The vehicle 2 may be a vehicle that performs autonomous driving or a vehicle that performs manual driving.

[0016] In Embodiment 1, it is considered that the battery of the vehicle 2 can be replaced at the battery replacement stand 3. For example, when the remaining amount of the battery of the vehicle 2 drops to a certain level, the battery of the vehicle 2 is replaced with a new one. The battery replacement stand 3 and the server 4 provide such a battery replacement service. In the battery replacement service, based on the replacement request from the vehicle 2, the location and time of the battery replacement stand 3 for performing the battery replacement are set. This setting may be performed by the driver of the vehicle 2 accepting the replacement proposal from the server 4.

[0017] Separate from the battery replacement request, the vehicle 2 requests the server 4 to update the in-vehicle program PROG_V. When the server 4 receives the update request for the in-vehicle program PROG_V from the vehicle 2, the server 4 generates a vehicle list SUL of the programs scheduled for update. Then, the server 4 transmits the vehicle list SUL of the programs scheduled for update to the battery replacement stand 3. The vehicle list SUL of the programs scheduled for update includes the data of the update program PROG_U to be incorporated into the vehicle 2. The update program PROG_U is, for example, a program for updating a part of the in-vehicle program PROG_V.

[0018] Note that the update request for the in-vehicle program PROG_V to the server 4 may be made by the manufacturer of the vehicle 2 instead of the vehicle 2.

[0019] The battery replacement stand 3 incorporates the update program PROG_U corresponding to the vehicle 2 into the vehicle 2 based on the vehicle list SUL scheduled for program update received from the server 4. Specifically, when the vehicle 2 enters the battery replacement stand 3 only for the purpose of replacing the battery of the vehicle 2 or updating the program, the battery replacement stand 3 replaces the battery mounted on the vehicle 2 with a new battery. At the time of battery replacement, the battery replacement stand 3 writes the update program PROG_U corresponding to the vehicle 2 to the new battery.

[0020] Thus, when the vehicle 2 enters the battery replacement stand 3, the vehicle 2 can obtain the update program PROG_U corresponding to the vehicle 2. After the vehicle 2 exits the battery replacement stand 3, the vehicle 2 updates the obtained update program PROG_U. The update of the update program PROG_U is performed, for example, while the vehicle 2 is running.

[0021] FIG. 1(B) is a diagram for explaining the outline of the vehicle 2. Specifically, the vehicle 2 includes a battery unit 5, a battery support portion 6, and an ECU 7. The battery unit 5 includes a battery and a memory. The memory mounted on the battery unit 5 has a memory area capable of writing the update program PROG_U.

[0022] The battery support portion 6 has a structure that allows the battery unit 5 to be detached. After the vehicle 2 enters the battery replacement stand 3, the battery support portion 6 removes the battery unit 5 and attaches another battery unit 5.

[0023] The ECU 7 includes a memory for storing the in-vehicle program PROG_V and a processor for executing the in-vehicle program PROG_V. Further, the ECU 7 is electrically connected to the battery unit 5 via the battery support portion 6.

[0024] Figure 1(C) is a diagram illustrating the general method for writing the update program PROG_U. Here, the battery unit 5 before replacement is referred to as the old battery unit 8, and the battery unit 5 after replacement is referred to as the new battery unit 11. In this case, the old battery unit 8 contains the old memory 9 and the old battery 10, and the new battery unit 11 contains the new memory 12 and the new battery 13.

[0025] The battery replacement stand 3 includes a communication device 20, a battery replacement device 30, and an information processing device 40. The communication device 20 is a device that communicates with the server 4. The battery replacement device 30 is a device that removes the old battery unit 8 from the battery support section 6 of the vehicle 2 and installs the new battery unit 11 into the battery support section 6 of the vehicle 2.

[0026] The information processing device 40 is a computer that performs the process of replacing the battery in vehicle 2. The information processing device 40 is connected to server 4 via communication device 20. The information processing device 40 is also connected to battery replacement device 30.

[0027] The information processing device 40 performs various processes. The information processing device 40 also stores a battery replacement program. The battery replacement method according to Embodiment 1 is realized when the information processing device 40 executes the battery replacement program. Details of the various processes performed by the information processing device 40 will be described later.

[0028] The information processing device 40 writes the update program PROG_U corresponding to vehicle 2 to the new memory 12 based on the vehicle list SUL of vehicles scheduled for program updates obtained from the server 4.

[0029] Furthermore, after the vehicle 2 enters the battery replacement stand 3, the information processing device 40 instructs the battery replacement device 30 to remove the old battery unit 8 from the battery support section 6 of the vehicle 2. In addition, the information processing device 40 instructs the battery replacement device 30 to attach the new battery unit 11 to the battery support section 6 of the vehicle 2.

[0030] Here, we consider the timing of when the information processing device 40 writes the update program PROG_U, which corresponds to vehicle 2, to the new memory 12. Since the battery replacement of vehicle 2 is performed in units of battery unit 5, there are two possible timings for writing the update program PROG_U, which corresponds to vehicle 2, to the new memory 12.

[0031] Specifically, the first pattern involves writing the update program PROG_U to the new memory 12 after installing the new battery unit 11 in vehicle 2. Subsequently, the second pattern involves writing the update program PROG_U to the new memory 12 before installing the new battery unit 11 in vehicle 2. In this case, the second pattern is more efficient than the first pattern. One of the benefits of this is, for example, a reduction in waiting time at the battery replacement station 3.

[0032] After the new battery unit 11 is installed in vehicle 2, the ECU 7 reads the update program PROG_U stored in the new memory 12. Then, the ECU 7 rewrites a portion of the in-vehicle program PROG_V with the update program PROG_U.

[0033] Below are two specific examples of writing the update program PROG_U, which is compatible with vehicle 2, to the new memory 12.

[0034] 1-2. Specific Examples 1-2-1. Example 1 Figure 2 is a diagram illustrating a specific example of the first example of the battery replacement method according to Embodiment 1. In this specific example of the first example of the battery replacement method according to Embodiment 1, the update program PROG_U corresponding to the vehicle 2 is written to the new memory 12 based on the information stored in the old battery unit 8 that has been removed from the battery support section 6 of the vehicle 2.

[0035] Specifically, as shown in Figure 2, the vehicle list SUL scheduled for program updates includes a vehicle identification information ID (hereinafter referred to as the first vehicle identification information ID1) and the update program PROG_U. The first vehicle identification information ID1 is obtained via server 4 along with the update program PROG_U. Examples of the first vehicle identification information ID1 include vehicle type information, manufacturing number information, version information of the in-vehicle program PROG_V, etc.

[0036] The old memory 9 of the old battery unit 8 removed from vehicle 2 stores at least the vehicle identification information ID (hereinafter referred to as the second vehicle identification information ID 2). Examples of the second vehicle identification information ID 2 include vehicle type information, manufacturing number information, version information of the in-vehicle program PROG_V, etc.

[0037] The information processing device 40 compares the first vehicle identification information ID1 with the second vehicle identification information ID2. Based on the result of the comparison between the first vehicle identification information ID1 and the second vehicle identification information ID2, the information processing device 40 selects the update program PROG_U corresponding to vehicle 2.

[0038] Subsequently, the information processing device 40 performs the process of writing at least one update program PROG_U corresponding to the vehicle 2 to the new memory 12. The information processing device 40 may also write the version of the update program PROG_U to the new memory 12 along with the update program PROG_U.

[0039] 1-2-2. Second Example Figure 3 is a diagram illustrating a specific example of the second example of the battery replacement method according to Embodiment 1. In the specific example of the first example of the battery replacement method according to Embodiment 1, the update program PROG_U corresponding to the vehicle 2 is written to the new memory 12 without using the information stored in the old battery unit 8 that has been removed from the battery support section 6 of the vehicle 2.

[0040] Specifically, as shown in Figure 3, the battery replacement stand 3 is equipped with an infrastructure camera 50. The infrastructure camera 50 is a sensor that captures the license plate of vehicle 2 when vehicle 2 enters the battery replacement stand 3. The information processing device 40 acquires the camera image of vehicle 2, including the license plate of vehicle 2, captured by the infrastructure camera 50. Then, based on the camera image, the information processing device 40 recognizes the license plate 51 of vehicle 2.

[0041] The information processing device 40 obtains the vehicle list SUL scheduled for program updates via the server 4. The vehicle list SUL scheduled for program updates includes the vehicle number VN and the update program PROG_U.

[0042] The information processing device 40 compares the vehicle number VN with the vehicle number 51 of vehicle 2. Based on the result of the comparison between the vehicle number VN and the vehicle number 51 of vehicle 2, the information processing device 40 selects the update program PROG_U corresponding to vehicle 2.

[0043] Subsequently, the information processing device 40 performs the process of writing at least one update program PROG_U corresponding to the vehicle 2 to the new memory 12. The information processing device 40 may also write the version of the update program PROG_U to the new memory 12 along with the update program PROG_U.

[0044] 1-2-3. Effects Thus, in the battery replacement method according to Embodiment 1, when replacing the battery unit of vehicle 2, the update program PROG_U corresponding to vehicle 2 is written to the new memory 12 before the new battery unit 11 is attached to the battery support unit 6. When replacing the battery unit, vehicle 2 does not need to bear the communication costs for the program update. Furthermore, since the writing of the update program PROG_U to the new memory 12 has already been completed, vehicle 2 does not need to wait in the vehicle-related equipment until the reception of the update program PROG_U is complete. Therefore, it is possible to reduce the burden on vehicle 2 for the update of its program.

[0045] 1-3. Processing Example 1-3-1. First Processing Example Figure 4(A) is a flowchart showing a processing example of the first example of the information processing device 40.

[0046] In step S100, the information processing device 40 acquires various information. The process then proceeds to step S110. The various information includes the first vehicle identification information ID1 and the data of the update program PROG_U.

[0047] In step S110, the information processing device 40 determines whether or not the old battery unit 8 has been removed. If it is determined that the old battery unit 8 has been removed (step S110; Yes), the process proceeds to step S120. Otherwise (step S110; No), the process returns to step S100.

[0048] In step S120, the information processing device 40 obtains the second vehicle identification information ID2 from the old battery unit 8. The process then proceeds to step S130.

[0049] In step S130, the information processing device 40 compares the first vehicle identification information ID1 with the second vehicle identification information ID2. The process then proceeds to step S140. One way to compare the first vehicle identification information ID1 with the second vehicle identification information ID2 is to determine whether or not the second vehicle identification information ID2 matches the first vehicle identification information ID1.

[0050] In step S140, the information processing device 40 compares the first vehicle identification information ID1 and the second vehicle identification information ID2 to determine whether vehicle 2 is a vehicle scheduled for a program update. If vehicle 2 is determined to be a vehicle scheduled for a program update (step S140; Yes), the process proceeds to step S150. Otherwise (step S140; No), the process proceeds to step S170.

[0051] In step S150, the information processing device 40 selects the update program PROG_U corresponding to the vehicle 2. The process then proceeds to step S160.

[0052] In step S160, the information processing device 40 writes the update program PROG_U to the new battery unit 11. The process then proceeds to step S170.

[0053] In step S170, the information processing device 40 instructs the battery replacement device 30 to install the new battery unit 11 into the battery support section 6 of the vehicle 2.

[0054] 1-3-2. Second Processing Example Figure 4(B) is a flowchart showing a processing example of the second example of the information processing device 40. Here, we will explain the processing that differs from the first processing example, and omit the explanation of the processing that overlaps with the first processing example. Specifically, steps S210, S250, S260, and S270, which overlap with the first processing example, correspond to steps S110, S150, S160, and S170, respectively. Below, we will explain in detail the processing of steps S200, S220, S230, and S240, which differ from the first processing example.

[0055] In step S200, the information processing device 40 acquires various information. The process then proceeds to step S210. The various information includes the vehicle number VN and the data for the update program PROG_U.

[0056] In step S220, the information processing device 40 recognizes the license plate number 51 of vehicle 2 based on the camera image acquired by the infrastructure camera 50. The process then proceeds to step S230.

[0057] In step S230, the information processing device 40 compares vehicle number VN with vehicle number 51 of vehicle 2. The process then proceeds to step S240. The method for comparing vehicle number VN with vehicle number 51 of vehicle 2 is, for example, to determine whether or not vehicle number 51 of vehicle 2 matches vehicle number VN.

[0058] In step S240, the information processing device 40 compares the vehicle number VN with the vehicle number 51 of vehicle 2 to determine whether vehicle 2 is a vehicle scheduled for program update. If vehicle 2 is determined to be a vehicle scheduled for program update (step S240; Yes), the process proceeds to step S250. Otherwise (step S240; No), the process proceeds to step S270.

[0059] 2. Embodiment 2 In the battery replacement method according to Embodiment 1 described above, after the old battery unit 8 is removed from the battery support unit 6, and before the new battery unit 11 is attached to the battery support unit 6, the update program PROG_U corresponding to the vehicle 2 is written to the new memory 12. According to the battery replacement method according to Embodiment 2, before the old battery unit 8 is removed from the battery support unit 6, the update program PROG_U corresponding to the vehicle 2 is written to the new memory 12.

[0060] Specifically, as shown in Figure 5, the information processing device 40 stores a vehicle list SUL scheduled for program updates. The vehicle list SUL scheduled for program updates includes a first vehicle identification information ID1 and an update program PROG_U, similar to the first example of the battery replacement method according to Embodiment 1 described above.

[0061] The information processing device 40 performs the process of writing the first vehicle identification information ID1 and the update program PROG_U corresponding to the first vehicle identification information ID1 to the new memory 12 of each of the multiple new battery units 11 (11A, 11B, 11C, etc.) based on the vehicle list SUL for which the program is scheduled to be updated.

[0062] The information processing device 40 compares the first vehicle identification information ID1 with the second vehicle identification information ID2 stored in the old memory 9 of the old battery unit 8 removed from vehicle 2. Based on the result of the comparison between the first vehicle identification information ID1 and the second vehicle identification information ID2, the information processing device 40 selects a new battery unit 11 containing the update program PROG_U corresponding to vehicle 2. In the example shown in Figure 5, the new battery unit 11A is selected as the new battery unit 11 containing the update program PROG_U corresponding to vehicle 2.

[0063] Thus, in the battery replacement method according to Embodiment 2, the update program PROG_U corresponding to the vehicle 2 is written to the new memory 12 before the old battery unit 8 is removed from the battery support unit 6. This provides the same effect as the battery replacement method according to Embodiment 1. Furthermore, according to the battery replacement method according to Embodiment 2, the new memory 12 containing the update program PROG_U is prepared before the vehicle 2 enters the battery replacement stand 3. Therefore, when the vehicle 2 enters the battery replacement stand 3, the new memory 12 containing the update program PROG_U can be attached to the battery support unit 6 of the vehicle 2 without checking the information stored in the old battery unit 8 that has been removed from the battery support unit 6 of the vehicle 2. Thus, the time required to obtain the update program PROG_U for the vehicle 2 can be shortened, and the burden on the vehicle 2 for updating its program can be further reduced.

[0064] Furthermore, in the battery replacement method according to Embodiment 2, similar to the battery replacement method according to Embodiment 1 described above, there are two example methods: a first example and a second example. The details of each processing example will be explained below.

[0065] Figure 6(A) is a flowchart showing a processing example of the first example of the information processing device 40.

[0066] In step S300, the information processing device 40 acquires various information. The process then proceeds to step S310. The various information includes the first vehicle identification information ID1 and the data of the update program PROG_U.

[0067] In step S310, the information processing device 40 writes the first vehicle identification information ID1 and the update program PROG_U corresponding to the first vehicle identification information ID1 to the new memory 12 of each of the multiple new battery units 11, based on the vehicle list SUL for which the program update is scheduled. The process then proceeds to step S320.

[0068] In step S320, the information processing device 40 determines whether or not the old battery unit 8 has been removed. If it is determined that the old battery unit 8 has been removed (step S320; Yes), the process proceeds to step S330. Otherwise (step S320; No), the process returns to step S320.

[0069] In step S330, the information processing device 40 obtains the second vehicle identification information ID2 from the old battery unit 8. The process then proceeds to step S340.

[0070] In step S340, the information processing device 40 compares the first vehicle identification information ID1 with the second vehicle identification information ID2. The process then proceeds to step S350.

[0071] In step S350, the information processing device 40 compares the first vehicle identification information ID1 and the second vehicle identification information ID2 to determine whether vehicle 2 is a vehicle scheduled for a program update. If vehicle 2 is determined to be a vehicle scheduled for a program update (step S350; Yes), the process proceeds to step S360. Otherwise (step S350; No), the process proceeds to step S370.

[0072] In step S360, the information processing device 40 selects from among the multiple new battery units 11 the new battery unit 11 that stores the update program PROG_U corresponding to the vehicle 2. The process then proceeds to step S370.

[0073] In step S370, the information processing device 40 instructs the battery replacement device 30 to attach the new battery unit 11 to the battery support section 6 of the vehicle 2.

[0074] Figure 6(B) is a flowchart showing a processing example of the second example of the information processing device 40. Here, we will explain the processing that differs from the first processing example, and omit the explanation of the processing that overlaps with the first processing example. Specifically, steps S410, S420, S460, and S470, which overlap with the first processing example, correspond to steps S310, S320, S360, and S370, respectively. Below, we will explain in detail the processing of steps S400, S430, S440, and S450, which differ from the first processing example.

[0075] In step S400, the information processing device 40 acquires various information. The process then proceeds to step S410. The various information includes the vehicle number VN and the data for the update program PROG_U.

[0076] In step S430, the information processing device 40 recognizes the license plate number 51 of vehicle 2 based on the camera image acquired by the infrastructure camera 50. The process then proceeds to step S440.

[0077] In step S440, the information processing device 40 compares the vehicle number VN with the vehicle number 51 of vehicle 2. The process then proceeds to step S450.

[0078] In step S450, the information processing device 40 compares the vehicle number VN with the vehicle number 51 of vehicle 2 to determine whether vehicle 2 is a vehicle scheduled for program update. If vehicle 2 is determined to be a vehicle scheduled for program update (step S450; Yes), the process proceeds to step S460. Otherwise (step S450; No), the process proceeds to step S470. [Explanation of Symbols]

[0079] 1…Battery replacement system, 2…Vehicle, 3…Battery replacement stand, 4…Server, 5…Battery unit, 6…Battery support, 7…ECU, 8…Old battery unit, 9…Old memory, 10…Old battery, 11…New battery unit, 12…New memory, 13…New battery, 20…Communication device, 30…Battery replacement device, 40…Information processing device, 50…Infrastructure camera, 51…Vehicle 2 license plate number, PROG_V…In-vehicle program, PROG_U…Update program, SUL…List of vehicles scheduled for program update

Claims

1. A method for replacing batteries installed in a vehicle, Before the vehicle enters the battery replacement station, the step of generating a list of vehicles scheduled for program updates, including a first vehicle identification information indicating the identification information of the vehicle scheduled for program updates and an update program, based on the vehicle's onboard program update request, When the vehicle enters the battery replacement stand, the steps include removing the old battery and the old battery unit, including the old battery and old memory, from the battery support section of the vehicle, The steps include: acquiring second vehicle identification information indicating the vehicle identification information stored in the old battery unit; A step of determining whether the vehicle is a vehicle subject to the program update based on the result of comparing the first vehicle identification information and the second vehicle identification information, If the vehicle is determined to be the target vehicle, the step is to select the update program corresponding to the vehicle. The steps include: attaching a new battery unit, including a new battery and a new memory, to the battery support section; Before attaching the new battery unit to the battery support, the steps include writing the update program to the new memory, including A method for replacing a battery characterized by the following:

2. A method for replacing a battery according to Claim 1, The first vehicle identification information is the vehicle number of the vehicle scheduled for the program update, The second vehicle identification information is the vehicle number recognized by the camera image including the vehicle's license plate. A method for replacing a battery characterized by the following:

3. A method for replacing a battery according to claim 1 or 2, The step of writing the update program to the new memory is performed before removing the old battery unit from the battery support. A method for replacing a battery characterized by the following:

4. A method for replacing a battery according to claim 1 or 2, The aforementioned update program is a program that updates a part of the in-vehicle program. A method for replacing a battery characterized by the following:

5. A method for replacing a battery according to claim 1 or 2, A method for replacing batteries, characterized in that the vehicle is an electric vehicle with replaceable batteries.

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