Battery swapping station, battery swapping system and battery swapping method

Abstract

The present application relates to the technical field of new energy vehicles, in particular to a battery swap station, a battery swap system and a battery swap method. The battery swap station comprises a battery swap assembly and a battery box. The battery swap assembly comprises a hoisting unit, a plurality of first battery seats and a plurality of second battery seats. The area of the moving range of the hoisting unit projected downward comprises a set area. The set area comprises a first area, a second area, a moving channel and a battery swap area. The battery box satisfies X-2=Y. X is the sum of the number of the first battery seats and the number of the second battery seats, and Y is the number of the battery box. The first battery seats and the second battery seats are respectively used for placing the battery box. A < 2xB. A is the distance between the hoisting unit and the first battery seats and the second battery seats along the third direction, and B is the height of the battery box. Thus, the problem of long time consumption in the battery swap process of the battery swap station is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, in particular to a battery swap station, a battery swap system and a battery swap method. BACKGROUND

[0002] In the prior art, the battery swap station usually adopts a layout structure of two rows of multiple columns of battery seats, a passage is arranged between or on both sides of the two rows of battery seats, and a battery seat position is reserved in the passage as a turnover position. The layout realizes the horizontal movement of the battery box through the passage (there is enough space above the battery box to realize the up-down movement of the battery box). When a battery box on a certain battery seat in the array needs to be replaced or reconfigured, the operation process is usually to use a hoisting unit to take out the battery box on the battery swap vehicle from the mounting seat, and then transfer it through the passage and temporarily place it on the preset turnover position. After this step is completed, the hoisting unit can perform subsequent operations, such as placing the battery box in the battery swap station on the mounting seat, or moving the battery box at the turnover position to other designated positions. The entire physical handling process of the battery box is highly dependent on the movement of the hoisting unit in the passage and the picking and placing operations between different positions in the battery swap station to realize.

[0003] However, this existing layout structure causes a significant technical problem: when the battery box is replaced or the position is adjusted, the moving path is usually long and time-consuming. When a battery box that is not located at the turnover position needs to be replaced (which is the vast majority of cases), the hoisting unit must perform a long-distance movement process. Specifically, the hoisting unit first needs to move to the original position of the target battery box, pick up the battery box, and then carry it to the turnover position and place it down. Thereafter, if a new battery box needs to be placed, the hoisting unit needs to move a long distance again (possibly returning to the original area or to the new battery box storage point) to pick up the new battery box, and then move a long distance again to place it at the target position. In this process, the battery box itself and the hoisting unit need to move back and forth a long distance in the passage multiple times, resulting in a significant increase in operation time, mainly the time spent by the hoisting unit carrying the battery box in the passage, which reduces the operation efficiency of the overall system. SUMMARY

[0004] To solve the problem of long time consumption in the battery swap process of the battery swap station, the present application provides a battery swap station, comprising:

[0005] The battery replacement assembly comprises a hoisting unit, a plurality of first battery seats, and a plurality of second battery seats. The moving range of the hoisting unit projects downward to a set area. The set area comprises a first area, a second area, a moving channel, and a battery replacement area. The first area, the moving channel, and the second area are sequentially arranged along a first direction. The first area comprises a first placement area and a first turnover area. The second area comprises a second placement area and a second turnover area. The first placement area, the first turnover area, and the battery replacement area are sequentially arranged along a second direction. The second placement area, the second turnover area, and the battery replacement area are sequentially arranged along the second direction. Two rows of multiple columns of the first battery seats are arranged in the first placement area. Two rows of multiple columns of the first battery seats are arranged in the second placement area. One column of the second battery seats is arranged in the first turnover area and / or the second turnover area.

[0006] The battery box, X-2=Y; wherein X comprises the sum of the number of the first battery seats and the second battery seats, and Y is the number of the battery boxes. The first battery seats and the second battery seats are respectively used for placing the battery boxes. B

[0007] In some embodiments, the battery replacement assembly comprises at least three columns of the first battery seats. Each column of the first battery seats is sequentially arranged along the second direction.

[0008] In some embodiments, two of the second battery seats are arranged in the first turnover area or two of the second battery seats are arranged in the second turnover area.

[0009] In some embodiments, Z≥2; wherein Z is the number of the second battery holders.

[0010] In some embodiments, 3≤Z≤4; wherein Z is the number of the second battery holders.

[0011] In some embodiments, the battery swap assembly further comprises a control unit; the control unit is spaced apart from the second battery holders; the control unit is disposed in the first turnover area or the second turnover area; part of the second battery holders are disposed in the first turnover area, and another part of the second battery holders are disposed in the second turnover area; Z+S=4; R>B; wherein Z is the number of the second battery holders, S is the number of the control units; R is the distance between the top end of the control unit and the hoisting unit along the third direction.

[0012] In some embodiments, 2≤Z<4.

[0013] In some embodiments, the second battery holders are disposed near one side of the moving channel in the first turnover area, and / or the second battery holders are disposed near one side of the moving channel in the second turnover area.

[0014] In some embodiments, the battery swap vehicle comprises a vehicle body, a mounting seat; the vehicle body is connected with the mounting seat; the mounting seat is detachably connected with the battery box; the hoisting unit is used for disassembling and assembling the battery box on the mounting seat in the battery swap area; X further comprises the sum of the number of the first battery holder, the second battery holder and the mounting seat.

[0015] In some embodiments, based on the battery swap vehicle reaching the battery swap area, the state data of the battery swap system is obtained; wherein the state data comprises the power of the battery box in the first battery holder, the power of the battery box in the second battery holder, and the position of the mounting seat of the battery swap vehicle in the battery swap area.

[0016] Based on the fact that there is no battery box in two second battery holders and there is a battery box with more than a set amount of power in the first battery holder, the battery box with less power on the battery swap vehicle is moved to the second battery holder away from the mounting seat.

[0017] Based on moving the battery box with less power on the battery swap vehicle to the second battery holder away from the mounting seat, one of the battery boxes with more than the set amount of power in the first battery holder is moved to the mounting seat of the battery swap vehicle.

[0018] In some embodiments, the battery swap system further comprises:

[0019] Based on moving one of the battery boxes in the first battery seat with more than the set amount of electricity to the mounting seat of the battery replacement vehicle in the first battery seat, the number of battery replacement vehicles in the waiting area is obtained; wherein the waiting area is arranged on the side away from the first area of the battery replacement area;

[0020] Based on the absence of the battery replacement vehicle in the waiting area, moving the battery box with less electricity in the second battery seat to the first battery seat away from the moving channel and / or the battery replacement area and moving the battery box with more than the set amount of electricity in the first battery seat to the first battery seat close to the moving channel and / or the battery replacement area.

[0021] To solve the problem of long time consumption in the battery replacement process of the battery replacement station, the present application has the following advantages:

[0022] The area projected downward by the moving range of the hoisting unit includes a set area, and the set area includes a first area, a moving channel and a second area arranged in sequence along a first direction; such a layout enables the hoisting unit to access the battery box in the first turnover area or the second turnover area when performing the battery box replacement operation, so as to realize efficient and short-distance movement of the battery box between the battery seats, the turnover area and the battery replacement area driven by the hoisting unit, thereby reducing the time and path length required for the movement of the battery box, ultimately solving the problem of long battery replacement time caused by long-distance movement through a single turnover position in the prior art, and improving the battery replacement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A first perspective view of a battery replacement station according to an embodiment is shown;

[0024] Figure 2 A partial view of a battery replacement station according to an embodiment is shown;

[0025] Figure 3 A second perspective view of a battery replacement station according to an embodiment is shown.

[0026] Reference signs: 01 battery replacement assembly; 11 hoisting unit; 111 car guide rail; 112 car body; 113 trolley guide rail; 114 trolley body; 115 grabbing part; 116 supporting part; 12 first battery seat; 13 second battery seat; 14 battery delivery vehicle; 15 control unit; 02 battery box; 03 battery replacement vehicle; 31 car body; 32 mounting seat. DETAILED DESCRIPTION

[0027] The present disclosure will now be discussed with reference to a number of example embodiments. It should be appreciated that these embodiments are discussed solely for the purpose of enabling those with ordinary skill in the art to better understand and therefore implement the present disclosure, and are not intended to imply any limitation of the scope of the present disclosure.

[0028] As used herein, the terms "includes," "including," "has," "having," "contains," "containing," "un" and their variations are to be construed as open-ended terms meaning "including, but not limited to," except where the context requires otherwise. The term "based on" is to be construed as "based at least in part on." The terms "one embodiment" and "an embodiment" are to be construed as "at least one embodiment." The term "another embodiment" is to be construed as "at least one other embodiment." The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and the like are used for clarity in describing the orientation of the apparatus, elements, and / or components as shown in the figures. These terms are not meant to limit the orientation of the apparatus, elements, and / or components to a particular orientation, unless the context requires otherwise. Also, these terms are used in conjunction with the terms "abovementioned" and "abovementioned" to indicate the orientation or positional relationship shown in the figures. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation, or to be constructed and operated in a particular orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances. In addition, the terms "mounting", "setting", "provided with", "connected", "connected" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific type and structure can be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0029] In the present embodiment, during the operation of the battery replacement assembly 01, the hoisting unit 11 needs to cover a long distance when moving the battery box 02, resulting in a significant increase in the time consumption of the battery replacement process. In the existing layout design, when the hoisting unit 11 performs the battery box 02 storage and retrieval operation, the battery box 02 must be moved from the original position (such as the first battery seat 12 in the first placement area or the second placement area) to the turnover position or the battery replacement area. This path usually involves long-distance displacement across the moving channel and multiple battery seats, resulting in the need for the hoisting unit 11 to move a long distance, which is low in efficiency. The present embodiment discloses a battery replacement station, such as Figure 1As shown, the battery swap station includes a battery swap assembly 01 and a battery box 02. The battery swap assembly 01 includes a hoisting unit 11, a plurality of first battery seats 12, and a plurality of second battery seats 13. The area projected downward in the moving range of the hoisting unit 11 includes a set area. The set area includes a first area, a second area, a moving channel, and a battery swap area. The first area, the moving channel, and the second area are sequentially arranged along a first direction, which can be the width direction of the hoisting unit 11. The first area includes a first placement area and a first turnover area. The second area includes a second placement area and a second turnover area. The first placement area, the first turnover area, and the battery swap area are sequentially arranged along a second direction, which can be from the first side (left) of the length direction of the hoisting unit 11 to the second side (right) of the length direction of the hoisting unit 11, i.e., the direction from left to right as shown. Figure 1 The second placement area, the second turnover area, and the battery swap area are sequentially arranged along the second direction. Two rows of multiple columns of first battery seats 12 can be arranged in the first placement area. Two rows of multiple columns (rows in the first direction and columns in the second direction) of first battery seats 12 can be arranged in the second placement area. A portion of the two rows of multiple columns of first battery seats 12 are arranged in the first placement area. Another portion of the two rows of multiple columns of first battery seats 12 are arranged in the second placement area, and the first battery seats 12 in the first placement area and the second placement area together are all the first battery seats 12. One column of second battery seats 13 can be arranged in the first turnover area and / or the second turnover area, wherein all the second battery seats 13 are arranged in one column. In other embodiments, the hoisting unit 11 includes a large car guide rail 111, a large car body 112, a small car guide rail 113, a small car body 114, a grabbing part 115, and a supporting part 116. The large car body 112 can be slidably connected with the large car guide rail 111, and the small car guide rail 113 can be connected with the large car body 112. The small car body 114 can be slidably connected with the small car guide rail 113. The small car unit can move along the width direction of the battery swap assembly 01. The horizontal movement of the small car body 114 and the vertical movement of the large car body 112 form a planar positioning system, which realizes accurate position adjustment of the carrying assembly in a two-dimensional space. The grabbing part 115 can be detachably connected with the small car body 114, which realizes grabbing of the battery box 02. The supporting part 116 can be connected with the large car guide rail 111, which supports the hoisting unit 11.

[0030] The battery box 02, as shown Figure 3As shown, X-2=Y. Wherein, X includes the sum of the number of the first battery seat 12 and the second battery seat 13, and Y is the number of the battery box 02. The first battery seat 12 and the second battery seat 13 are respectively used to place the battery box 02. B

[0031] In the embodiment, the battery swapping assembly 01 includes at least three columns of first battery seats 12. Each column of first battery seats 12 is arranged in sequence along the second direction. By arranging at least three columns of battery seats, the battery swapping assembly 01 can increase the number and arrangement density of the first battery seats 12, thereby storing more battery boxes 02, and at the same time, controlling the overall occupied area through orderly arrangement.

[0032] In the embodiment, two second battery seats 13 can be arranged in the first turnover area or two second battery seats 13 are arranged in the second turnover area, so that the space of the first turnover area or the second turnover area can be used efficiently, and the layout is more compact. The battery replacement assembly 01 includes two second battery seats 13, and the two second battery seats 13 can be arranged in the first turnover area or the two second battery seats 13 can be arranged in the second turnover area. The battery replacement assembly 01 includes three second battery seats 13, two of which can be arranged in the first turnover area, and the other second battery seat 13 is arranged in the second turnover area, or two of which can be arranged in the second turnover area, and the other second battery seat 13 is arranged in the first turnover area. The battery replacement assembly 01 includes four second battery seats 13, and two second battery seats 13 are arranged in the first turnover area and the second turnover area.

[0033] In the embodiment, Z≥2. Wherein, Z is the number of second battery seats 13. By increasing the number of second battery seats 13, the temporary storage capacity of the battery box 02 can be improved, thereby enhancing the battery replacement capability. The battery replacement assembly 01 includes two second battery seats 13, and the two second battery seats 13 can be arranged in the first turnover area or the two second battery seats 13 can be arranged in the second turnover area. The battery replacement assembly 01 includes three second battery seats 13, two of which can be arranged in the first turnover area, and the other second battery seat 13 is arranged in the second turnover area, or two of which can be arranged in the second turnover area, and the other second battery seat 13 is arranged in the first turnover area. The battery replacement assembly 01 includes four second battery seats 13, and two second battery seats 13 are arranged in the first turnover area and the second turnover area.

[0034] In the embodiment, 3≤Z≤4. Wherein, Z is the number of second battery seats 13. By limiting the number of second battery seats 13 within a certain range, the number of battery boxes 02 that can be accommodated is increased, and the battery replacement capability is enhanced. The battery replacement assembly 01 includes three second battery seats 13, two of which can be arranged in the first turnover area, and the other second battery seat 13 is arranged in the second turnover area, or two of which can be arranged in the second turnover area, and the other second battery seat 13 is arranged in the first turnover area. The battery replacement assembly 01 includes four second battery seats 13, and two second battery seats 13 are arranged in the first turnover area and the second turnover area.

[0035] In the embodiment, the battery replacing assembly 01 further comprises a control unit 15. The control unit 15 is spaced apart from the second battery seats 13. The control unit 15 can be arranged in the first turnover area or the second turnover area, and there can be one or two control units 15. Part of the second battery seats 13 can be arranged in the first turnover area, and the other part of the second battery seats 13 can be arranged in the second turnover area. Z+S=4. R>B. Wherein, Z is the number of the second battery seats 13, S is the number of the control units 15. R is the distance between the top end of the control unit 15 and the lifting unit 11 along the third direction. The control unit 15 is arranged to obtain the power state of the battery box 02 in the first battery seat 12 and the second battery seat 13 and control the movement of the lifting unit 11, and R>B ensures that the battery box 02 can pass through the top end of the control unit 15 without obstruction under the drive of the lifting unit 11.

[0036] In the embodiment, 2≤Z<4. The number of the second battery seats 13 is large, which can make the battery replacing have more control modes, thereby providing more battery replacing control options, facilitating the selection of the optimal mode, and improving the efficiency. The battery replacing assembly 01 comprises two second battery seats 13, which can be arranged in the first turnover area or the second turnover area. The battery replacing assembly 01 comprises three second battery seats 13, two of which can be arranged in the first turnover area, and the other one can be arranged in the second turnover area, or two of which can be arranged in the second turnover area, and the other one can be arranged in the first turnover area.

[0037] In the embodiment, the second battery seats 13 can be arranged near one side of the moving channel in the first turnover area and / or the second battery seats 13 can be arranged near one side of the moving channel in the second turnover area. By arranging the second battery seats 13 near the moving channel, the battery box 02 can be moved without being blocked, thereby improving the operation efficiency.

[0038] The embodiment discloses a battery replacing system, the battery replacing system comprises a battery replacing station of any one of the above embodiments, and the battery replacing system further comprises a battery replacing vehicle 03, the battery replacing vehicle 03 comprises a vehicle body 31 and a mounting seat 32. The vehicle body 31 can be connected with the mounting seat 32. The mounting seat 32 can be detachably connected with the battery box 02. The hoisting unit 11 can be used to disassemble and assemble the battery box 02 on the mounting seat 32 in the battery replacing area. The battery replacing system further comprises a first battery seat 12, a second battery seat 13 and a mounting seat 32. When the battery replacing vehicle 03 reaches the battery replacing area, the distance between the battery replacing vehicle 03 and any one of the second battery seats 13 along the second direction is equal to C. By limiting the sum of the first battery seat 12, the second battery seat 13 and the mounting seat 32, there are enough idle first battery seats 12 or second battery seats 13 or mounting seats 32, so that the battery replacing system can realize the battery replacing of the battery replacing vehicle 03, and meanwhile, the battery box 02 can be accessed and moved in a short distance by the hoisting unit 11, thereby reducing the displacement path length of the battery box 02, finally solving the time-consuming problem caused by the long distance covered by the hoisting unit 11 during the movement of the battery box 02, and improving the battery replacing efficiency. In other embodiments, as shown in Figure 2 the battery replacing system further comprises a battery delivering vehicle 14 for providing the battery replacing station with the battery box 02.

[0039] The embodiment discloses a battery replacing method, the battery replacing method can be applied to the battery replacing system of any one of the above embodiments, and the battery replacing method comprises steps S10-S30, and the steps are described in detail as follows.

[0040] In step S10, based on the battery replacing vehicle 03 reaching the battery replacing area, the state data of the battery replacing system can be obtained. The state data comprises the electric quantity of the battery box 02 in the first battery seat 12, the electric quantity of the battery box 02 in the second battery seat 13 and the position of the mounting seat 32 of the battery replacing vehicle 03 in the battery replacing area.

[0041] In step S20, based on the fact that there is no battery box 02 in the two second battery seats 13 and there is a battery box 02 with an electric quantity greater than a set electric quantity in the first battery seat 12, the battery box 02 with a small electric quantity on the battery replacing vehicle 03 can be moved to the second battery seat 13 away from the mounting seat 32.

[0042] In step S30, based on the fact that the battery box 02 with a small electric quantity on the battery replacing vehicle 03 is moved to the second battery seat 13 away from the mounting seat 32, one battery box 02 with an electric quantity greater than a set electric quantity in the first battery seat 12 can be moved to the mounting seat 32 of the battery replacing vehicle 03 through the moving channel. In this way, the battery box 02 moving step can be performed based on the state data, and the short-distance operation can be realized through the four-row multi-column layout, thereby reducing the displacement length of the battery box 02 driven by the hoisting unit 11, finally solving the problem of long time consumption of the battery replacing and improving the efficiency.

[0043] In the embodiment, the battery replacing method further comprises steps S40 and S50, which can be executed in sequence after step S30 is completed. Details of each step are as follows:

[0044] In step S40, based on moving the battery box 02 with more than the set amount of electricity in the first battery seat 12 to the mounting seat 32 of the battery replacing vehicle 03, the number of battery replacing vehicles 03 in the waiting area can be obtained. The waiting area is arranged on the side of the battery replacing area away from the first area.

[0045] In step S50, based on the absence of the battery replacing vehicle 03 in the waiting area, the battery box 02 with less electricity in the second battery seat 13 can be moved to the first battery seat 12 away from the moving channel and / or the battery replacing area, and the battery box 02 with more than the set amount of electricity in the first battery seat 12 can be moved to the first battery seat 12 close to the moving channel and / or the battery replacing area. In this way, the position of the battery box 02 can be optimized when there is no battery replacing vehicle 03, thereby reducing the time required for subsequent battery replacing operations and improving the battery replacing efficiency of the battery replacing station.

[0046] Those skilled in the art can understand that the above embodiments are specific cases for implementing the present disclosure, and in actual application, various changes can be made in form and details without departing from the scope of the present disclosure.

Claims

1. A battery swap station, characterized by, The battery swap station comprises: The battery swap assembly comprises a hoisting unit, a plurality of first battery seats, and a plurality of second battery seats; a region, which is downwardly projected by a moving range of the hoisting unit, comprises a set region; the set region comprises a first region, a second region, a moving channel, and a battery swap region; the first region, the moving channel, and the second region are sequentially arranged along a first direction, which is a hoisting unit width direction; the first region comprises a first placement area and a first turnover area; the second region comprises a second placement area and a second turnover area; the first placement area, the first turnover area, and the battery swap region are sequentially arranged along a second direction, which is a hoisting unit length direction; the second placement area, the second turnover area, and the battery swap region are sequentially arranged along the second direction; two rows of a plurality of the first battery seats are arranged in the first placement area; two rows of a plurality of the first battery seats are arranged in the second placement area; one column of the second battery seats is arranged in the first turnover area and / or the second turnover area; a battery box, X-2=Y; wherein X comprises a sum of the number of the first battery seats and the number of the second battery seats, Y is the number of the battery boxes; the first battery seats and the second battery seats are respectively used for placing the battery boxes; B 2. The battery swap station according to claim 1, wherein the battery swap assembly comprises at least three columns of the first battery seats; each column of the first battery seats is sequentially arranged along the second direction.

3. The battery swap station according to claim 1, wherein two of the second battery seats are arranged in the first turnover area or two of the second battery seats are arranged in the second turnover area. ​ ​ 4. The battery swap station of claim 3, wherein Z≥2, wherein Z is the number of the second battery holders.

5. The battery swap station of claim 3, wherein 3≤Z≤4, wherein Z is the number of the second battery holders.

6. The battery swap station of claim 1, wherein the battery swap assembly further comprises control units, the control units are spaced apart from the second battery holders, the control units are disposed in the first turnover area or the second turnover area, part of the second battery holders are disposed in the first turnover area, and the other part of the second battery holders are disposed in the second turnover area, Z+S=4, R>B, wherein Z is the number of the second battery holders, S is the number of the control units, and R is the distance between the top end of the control units and the lifting unit along the third direction.

7. The battery swap station of claim 6, wherein the second battery holders are disposed in the first turnover area close to one side of the moving channel, and / or the second battery holders are disposed in the second turnover area close to one side of the moving channel.

8. The battery swap station of claim 7, wherein the second battery holders are disposed in the first turnover area close to one side of the moving channel, and / or the second battery holders are disposed in the second turnover area close to one side of the moving channel.

9. A battery swap system, comprising: the battery swap station of any one of claims 1-8; and a battery swap vehicle, comprising a vehicle body and a mounting seat, wherein the vehicle body is connected to the mounting seat, the mounting seat is detachably connected to the battery box, the lifting unit is used to detach and assemble the battery box on the mounting seat in the battery swap area, and X further comprises the sum of the number of the first battery holders, the second battery holders, and the mounting seat.

10. A battery swap method, applied to the battery swap system of claim 9, comprising: obtaining state data of the battery swap system based on the arrival of the battery swap vehicle at the battery swap area, wherein the state data comprises the power of the battery box in the first battery holder, the power of the battery box in the second battery holder, and the position of the mounting seat of the battery swap vehicle in the battery swap area; moving the battery box with less power on the battery swap vehicle to the second battery holder away from the mounting seat based on the fact that there is no battery box in the two second battery holders and there is the battery box with more than a set power in the first battery holder; and moving the battery box with more than the set power in the first battery holder to the mounting seat of the battery swap vehicle based on the movement of the battery box with less power on the battery swap vehicle to the second battery holder away from the mounting seat. 2≤Z＜4。 11. The battery swap method of claim 10, wherein the battery swap system further comprises: obtaining the number of battery swap vehicles in a waiting area based on the movement of the battery box with more than the set power in the first battery holder to the mounting seat of the battery swap vehicle, wherein the waiting area is disposed on the side away from the first area of the battery swap area. ​ 9. A battery replacement system, characterized by, ​ ​ 10. A battery swapping method, characterized in that, ​ ​ ​ ​ ​ ​ ​ based on no battery swap vehicle being in the waiting area, moving the battery box with less electricity in the second battery seat to the first battery seat away from the moving passage and / or the battery swap area and moving the battery box higher than the set electricity in the first battery seat to the first battery seat close to the moving passage and / or the battery swap area.

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