CN219056037U - Heavy-duty truck replacement locking structure and electric heavy-duty truck - Google Patents

Abstract

The utility model provides a heavy truck trades electric locking structure and electronic heavy truck, relate to the heavy truck of new forms of energy and trade electric technical field, heavy truck trades electric locking structure includes the base and sets up the battery case on the base, the bottom frame of battery case is arranged on the base, still be provided with a plurality of locking crossbeams in the bottom frame, be provided with the locker on the base, the locker includes two locking risers that set up relatively on the base, power device and the spring bolt of being connected with power device, the locking crossbeam is arranged between two relative locking risers, promote the spring bolt through power device and pass two locking risers in proper order, so that the locking crossbeam is fixed in between base and the spring bolt, adopt the heavy truck of this application to trade electric locking structure can realize reliable locking, reduce the deformation of locker and fracture risk, increase failure protection, reduce the battery case and the base risk of breaking away from; the vibration amplitude of the lock tongue is reduced, and the service cycle of the power device is prolonged; the flexibility of setting up the position is improved, other functions are realized on the battery box.

Description

Heavy-duty truck replacement locking structure and electric heavy-duty truck

Technical Field

The application relates to the technical field of new energy heavy truck power conversion, in particular to a heavy truck power conversion locking structure and an electric heavy truck.

Background

With global automobile motorization, the popularization rate of new energy automobiles is higher and higher, and the trend towards motorization as a heavy truck with the most serious pollution and highest oil consumption is also a necessary choice. The heavy truck is large in tonnage and high in energy consumption, and the current charging cannot meet the actual operation scene, so that the power conversion scheme becomes the most convenient, economical and reliable technical scheme of the current heavy truck. Because heavy truck has more electric quantity and large size, the current heavy truck is generally replaced by a lifting mode. In the top-hung type power exchange process, if the battery box and the upper base of the whole car are locked and unlocked quickly and reliably, the core of the whole power exchange scheme is the battery box.

The main current locking mode of the heavy truck in the current market is a bottom edge beam locking mode, namely, a plurality of peripheral power devices push the lock tongue to come out of the base and then press the lock tongue on the bottom edge beam of the battery rack in a cantilever beam mode, so that the purpose of locking the battery box to the base is achieved. However, because the spring bolt mechanism adopts the cantilever beam form, in the actual operation jolt of vehicle, the spring bolt atress can appear great vibration, and great amplitude can cause spring bolt pushing mechanism and inside axle sleeve premature wear and destruction, and the spring bolt breaks or after warping appears in extreme case, and the battery box has the risk of breaking away from with the base, can cause great safety problem.

Disclosure of Invention

The utility model provides an aim at to among the above-mentioned prior art, provide a heavy card trades electric locking structure and electronic heavy card for the battery box of electronic heavy card is fixed on the base firmly, reduces the vibration.

In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

in one aspect of the embodiment of the application, a heavy truck power-changing locking structure is provided, including base and the battery box of setting on the base, the bottom frame of battery box sets up on the base, still is provided with a plurality of locking crossbeams in the bottom frame, is provided with the locker on the base, and the locker includes two locking risers that set up relatively on the base, power device and the spring bolt of being connected with power device, and the locking crossbeam is arranged in between two relative locking risers, promotes the spring bolt through power device and passes two locking risers in proper order, so that the locking crossbeam is fixed in between base and the spring bolt.

Optionally, a wedge block is arranged on one side of the locking beam, which faces the locking bolt, and the surface of one side, which contacts with the locking beam, of the locking bolt is an inclined plane, and the locking bolt is contacted and pressed with the wedge block along with the extension of the locking bolt to the locking vertical plate.

Optionally, the top end of the locking upright plate is further provided with a guide plate, the guide plate is provided with an inclined plane, and the locking cross beam is guided by the inclined plane to be placed between the two opposite locking upright plates.

Optionally, a plurality of guide posts are arranged on the base, a guide block with a guide hole is arranged on the bottom frame of the battery box, and the guide posts penetrate into the guide hole to position the battery box at the setting position on the base.

Optionally, the bottom frame of the battery box is rectangular, and the plurality of locking crossbeams are arranged between two opposite side frames of the bottom frame at intervals in parallel.

Optionally, the protruding direction of the latch tongue is towards the inside or outside of the bottom frame.

Optionally, the power device is an air cylinder or a hydraulic cylinder, and a piston rod of the power device and the lock tongue are coaxial.

Optionally, a charging gun port is arranged on a frame, which is not connected with the locking cross beam, on the bottom frame, and is used for connecting a charging gun to charge and discharge the battery box.

Optionally, the battery box includes a box frame for supporting the battery box and a plurality of battery cells disposed in the box frame, the bottom frame is located at the bottom of the box frame, and the plurality of battery cells are connected to the charging muzzle.

On the other hand, the application also provides an electric heavy truck, which comprises a whole truck and the heavy truck power-exchanging locking structure arranged on the whole truck and described above.

The application provides a heavy truck trades electric locking structure, including base and the battery box of setting on the base, the bottom frame of battery box sets up on the base, still is provided with a plurality of locking crossbeams in the bottom frame, is provided with the lock on the base, and the lock includes two locking risers that set up relatively on the base, power device and the spring bolt of being connected with power device, and the locking crossbeam is arranged in between two relative locking risers, promotes the spring bolt through power device and passes two locking risers in proper order, so that the locking crossbeam is fixed in between base and the spring bolt. By adopting the heavy-duty truck power-exchanging locking structure, reliable locking between the battery box and the base can be realized, the deformation and fracture risk of the locking structure are reduced, the secondary failure protection is increased, and the risk of detachment of the battery box and the base is reduced; the lock tongue is arranged between the two locking vertical plates in a penetrating way to fix the locking cross beam, so that the vibration amplitude of the lock tongue can be reduced, and the service cycle of the power device and the internal shaft sleeve can be greatly prolonged; moreover, the heavy truck of this application trades electric locking structure and sets up in the preset position of whole car, can save space in the steadiness of guaranteeing the fixing, improves the flexibility of setting up the position, can further set up other required structures on not setting up the frame of locking crossbeam, like charge muzzle etc to realize relevant functions such as charge and discharge on the battery box.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a heavy-duty card power-exchanging locking structure according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a heavy-duty card power-exchanging locking structure according to an embodiment of the present application;

fig. 3 is a schematic structural diagram III of a heavy truck power-exchanging locking structure provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a base according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a battery box according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a latch according to an embodiment of the present application.

Icon: 10-a heavy truck power-exchanging locking structure; 100-battery box; 110-locking the cross beam; 120-wedge block; 130-a guide hole; 140-a box frame; 141-a bottom frame; 150-charging muzzle; 160-guiding cross beams; 200-base; 210-a latch; 211-locking risers; 212-a power plant; 213-spring bolt; 214-a locking hole; 215-a guide plate; 221-guide posts.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. It should be noted that, in the case of no conflict, the features of the embodiments of the present application may be combined with each other, and the combined embodiments still fall within the protection scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The main current locking mode of changing the electricity heavy card in the market at present is a bottom edge beam locking mode, namely, the periphery of the bottom of the battery box is pushed by a plurality of power devices to push the lock tongue to come out of the base and then is pressed on the bottom edge beam of the battery frame in a cantilever beam mode, so that the aim of locking the battery box to the base is fulfilled, and in conclusion, the following problems exist in the prior art: (1) Because the spring bolt mechanism adopts a cantilever beam form, no secondary protection exists, and after the spring bolt breaks or deforms under extreme conditions, the battery box and the base have the risk of separating, so that a large traffic safety accident can be caused; (2) Because the spring bolt mechanism adopts a cantilever beam form, in the actual running jolt of the vehicle, the spring bolt is stressed to generate larger vibration, and the larger amplitude can cause premature wear and damage of the spring bolt pushing mechanism and the inner shaft sleeve; (3) Due to the adoption of the four-side locking mechanism, the four-side space of the layer frame cannot be utilized, and space waste is caused, for example, the charging gun port is arranged on the side face, so that the charging and discharging of the battery box cannot be realized. Under the condition of the four-side locking scheme, only the charging gun mouth can be arranged on the whole vehicle base, and the charging and discharging functions of the battery box can not be realized.

To solve the above-mentioned problem, the embodiment of the present application provides a method for disposing the latch 210 inside the battery box 100, and press-fitting the latch tongue 213 with a slope at the bottom with the latch beam 110 and the wedge 120 below with a certain interference under the pushing of the power device 212, and simultaneously, the head of the latch tongue 213 enters the opposite latch riser 211.

Specifically, referring to fig. 1, the heavy-duty power-exchanging locking structure 10 provided in the embodiment of the present application includes a base 200 and a battery box 100 disposed on the base 200, a bottom frame 141 of the battery box 100 is disposed on the base 200, a plurality of locking beams 110 are further disposed in the bottom frame 141, a locking device 210 is disposed on the base 200, the locking device 210 includes two locking risers 211 disposed on the base 200 opposite to each other, a power device 212, and a locking tongue 213 connected to the power device 212, the locking beams 110 are disposed between the two opposite locking risers 211, and the locking tongue 213 is pushed by the power device 212 to sequentially pass through the two locking risers 211, so that the locking beams 110 are fixed between the base 200 and the locking tongue 213. On the plane of the bottom frame 141, referring to fig. 3, the extending direction of the lock beam 110 is hereinafter referred to as the X direction, the extending direction perpendicular to the lock beam 110 is referred to as the Y direction, and the direction perpendicular to the XY plane is referred to as the Z direction.

The bottom frame 141 is disposed along an outer edge of the base 200, and the bottom frame 141 forms a rectangle with a rim on a plane of the base 200. As shown in fig. 5, the locking beam 110 of the present application is disposed in a rectangle formed by the bottom frame 141, and the locking beam 110 and the bottom frame 141 are on the same plane and parallel to the base 200. Because the locking crossbeam 110 is fixed between two locking risers 211, and locking riser 211 still contacts the bottom crossbeam, this application not only locks locking crossbeam 110 through spring bolt 213, when spring bolt 213 became invalid, two locking risers 211 can realize second grade failsafe, limit the position of locking crossbeam 110 in the Z direction for battery case 100 is difficult for deviate from on the base 200.

As shown in fig. 4, a locker 210 is protruded from a side of the base 200 facing the battery case 100, and the locker 210 fixes the battery case 100 to the base 200 by fixing the locking beam 110. The two opposite locking risers 211 clamp the locking beam 110, and the power device 212 is connected with one of the locking risers 211 to control the locking tongue 213 to sequentially pass through the two locking risers 211, and the locking tongue 213 can extend or retract under the control of the power device 212. When the locking tongue 213 is extended, it passes through the two locking risers 211, and fixes the locking beam 110.

Fig. 2 is an arrangement of the locking device 210 of the present application, in which four locking devices 210 are disposed on the inner sides of the long frames of the bottom frame 141 of the battery box 100, two locking bolts 213 are disposed at two ends of the locking beam 110, respectively, and extend and retract along the Y direction, and the locking beam 110 can be locked and unlocked by the power device 212 of the locking device 210. The locking is completed after the bolt 213 enters the locking hole 214 of the locking vertical plate 211; the lock tongue 213 is retracted by the power unit 212 and is retracted from the two locking risers 211, and the locking beam 110 can be retracted from the two oppositely arranged locking risers 211.

It should be noted that, the locking beam is fixedly disposed on the battery box in a form of stable fixation such as welding, it should be understood that the locking beam belongs to a structural member of the battery box, and when the battery box includes a box frame and a battery disposed in the box frame, the locking beam should belong to a part of the frame structure-box frame of the battery box.

In summary, the heavy-duty power-saving locking structure 10 provided in the embodiments of the present application includes a base 200 and a battery box 100 disposed on the base 200, a bottom frame 141 of the battery box 100 is disposed on the base 200, a plurality of locking beams 110 are further disposed in the bottom frame 141, a locking device 210 is disposed on the base 200, the locking device 210 includes two locking risers 211, a power device 212 and a locking tongue 213 connected with the power device 212 which are disposed on the base 200 oppositely, the locking beams 110 are disposed between the two opposite locking risers 211, and the locking tongue 213 is pushed by the power device 212 to sequentially pass through the two locking risers 211, so that the locking beams 110 are fixed between the base 200 and the locking tongue 213. The lock tongue 213 is arranged between the two locking vertical plates 211 in a penetrating way to fix the locking beam 110, so that the vibration amplitude of the lock tongue 213 can be reduced, and the service cycle of the power device 212 and the internal shaft sleeve can be greatly prolonged; moreover, the heavy truck of this application trades electric locking structure 10 and sets up in the preset position of whole car, can save space in the time of guaranteeing fixed steadiness, improves the flexibility of setting up the position, can further set up other required structures on not setting up locking crossbeam 110's frame, like charge muzzle 150 etc to realize relevant functions such as charge and discharge on battery box 100.

Specifically, a wedge 120 is disposed on a side of the locking beam 110 facing the locking beam 213, a surface of a side of the locking beam 110, which contacts the locking beam 213, is an inclined surface, and the locking beam 213 contacts and compresses with the wedge 120 as the locking beam 213 extends toward the locking vertical plate 211. After locking in place, the lock tongue 213 will have a certain pre-compression force on the wedge 120 on the beam of the lock tongue 213 to prevent abnormal sound caused by frame quantity of the battery box 100 in the whole vehicle operation, meanwhile, as shown in fig. 5, the wedge 120 can be a plurality of overlapped wedges, and is fixed on the locking beam 110 through screws, as shown in fig. 6, the cross sections of the locking device 210 and the locking beam 110 can be obtained, and along the extending direction of the lock tongue 213, the wedge 120 extends towards the direction away from the locking beam 110, namely the thickness of the wedge 120 increases; the locking tongue 213 has a lower surface matching the inclined surface of the wedge 120, and the lower surface of the locking tongue 213 extends toward a side away from the locking beam 110 in the extending direction of the locking tongue 213, i.e., the diameter of the locking tongue 213 gradually decreases.

It should be noted that, the upper end of the locking tongue 213 is disposed parallel to the base 200, that is, the upper end of the locking tongue 213 extends horizontally, the bottom of the locking tongue 213 extends toward the side away from the locking beam 110, and the diameter is gradually reduced, as shown in fig. 6, with respect to the locking riser 211 to which the power unit 212 is connected, a locking hole 214 is provided, and the upper end of the locking tongue 213 contacts with the upper end of the locking hole 214.

Fig. 4 is a sectional view of the locking device 210 and the locking beam 110 of the present application, and the locking process, the movement process of the locking tongue 213 after locking, and the matching relationship with the wedge 120 and the locking riser 211 can be seen from the sectional view, and the locking wedge 120 is mounted on the locking beam 110.

Illustratively, as shown in fig. 3, the top end of the locking riser 211 is further provided with a guide plate 215, the guide plate 215 having an inclined surface, and the locking beam 110 is guided by the inclined surface to be interposed between the opposite two locking risers 211.

In the embodiment of fig. 3, a guide plate 215 is provided on the locking riser 211 of the connection power unit 212, the guide plate 215 being formed with two inclined surfaces for guiding, respectively extending toward the side away from the locking beam 110 and toward the side of the rim of the bottom frame 141 connected to the locking beam 110. When the frame of the bottom frame 141 contacts the inclined surface of the guide plate 215, the frame moves toward the outside of the guide plate 215, and when the locking beam 110 contacts the inclined surface of the guide plate 215, the locking beam 110 moves toward between the two oppositely arranged locking vertical plates 211.

Illustratively, as shown in fig. 3, a plurality of guide posts 221 are provided on the base 200, a guide block having guide holes 130 is provided on the bottom frame 141 of the battery case 100, and the battery case 100 is positioned at the installation position on the base 200 by penetrating the guide holes 130 through the guide posts 221. The guide beam 160 is arranged on the bottom frame 141 to fix the guide block, and the guide hole 130 is arranged on the guide block.

In summary, the structure of the present application is provided with a primary guide structure including the guide plate 215 as described above, and a secondary guide structure including the guide post 221 provided on the base 200 and the guide hole 130 provided on the bottom frame 141.

As illustrated in fig. 5, the bottom frame 141 of the battery case 100 has a rectangular shape, a plurality of locking beams 110 are disposed between opposite rims of the bottom frame 141 at a parallel interval, the locking beams 110 and the guide beams 160 are disposed in parallel, and the locking devices 210 are disposed at both ends of the locking beams 110 and contact the rims of the bottom frame 141 such that the locking devices 210 guide the bottom frame 141 and the locking beams 110.

It should be noted that, in the embodiment of fig. 4, the base 200 is a frame structure, in which a bar is disposed to be matched with the locking beam 110, and the locking device 210 is mounted on the bar, and in other embodiments, the base 200 may be a solid plate structure, which is not limited in this application.

Specifically, the protruding direction of the latch tongue 213 is toward the inside or outside of the bottom frame 141. As shown in fig. 4, in the embodiment of the present application, the protruding directions of the plurality of locking bolts 213 provided on the same locking beam 110 are the same; the two locking beams 110 are arranged in opposite directions, that is, the locking bolts 213 extend toward the inner side of the bottom frame 141, and in other embodiments, the two locking beams 110 may be rotated outward by 180 ℃, and the extending directions of the locking bolts 213 of the two locking beams 110 may be arranged opposite to each other, so as to fix the bottom frame 141.

Illustratively, as shown in fig. 6, the power device 212 is a cylinder or a hydraulic cylinder, and a piston rod of the power device 212 and the locking tongue 213 are coaxial to control the extension or retraction of the locking tongue 213 to lock the locking beam 110.

Specifically, the cross section of the latch tongue 213 is circular, rectangular or trapezoidal, and the upper part is narrow and the lower part is wide in a trapezoidal structure, which is not limited in this application.

As illustrated in fig. 5, a charging gun port 150 is provided on a rim of the bottom frame 141 to which the locking beam 110 is not connected, for connecting a charging gun to charge and discharge the battery case 100, and since the locking beam 110 for fixing the battery case 100 is provided in the bottom frame 141, the bottom frame 141 has a space for providing the charging gun port 150 parallel to the rim of the locking beam 110.

Specifically, the battery case 100 includes a case frame 140 for supporting the battery case 100 and a plurality of battery cells disposed in the case frame 140, the bottom frame 141 is located at the bottom of the case frame 140, and the plurality of battery cells are connected to a charging muzzle 150, through which the battery case 100 is charged.

The application provides a heavy truck trades electric locking structure 10, its concrete theory of operation and application method do: as shown in fig. 6, which is a cross section of the locker 210, when the battery case 100 falls into the base 200, the primary guide is guided by the contact of the two inclined planes with the bottom frame 141 and the locking beam 110 of the battery case 100 in the Y direction and the X direction, and then enters the secondary guide after the primary guide is completed, the guide post 221 of the base 200 is inserted into the guide hole 130 of the battery case 100, and the battery case 100 falls onto the whole vehicle base 200 after the guide is completed. At this time, the base 200 receives the locking instruction, the power device 212 for locking pushes the lock tongue 213 to move along the Y axis, the lower inclined surface of the lock tongue 213 contacts the wedge 120 on the locking beam 110, under the pushing of the power device 212, the lower inclined surface of the lock tongue 213 and the upper inclined surface of the locking wedge 120 complete interference fit, at this time, the head of the lock tongue 213 also enters the locking hole 214 of the locking riser 211, and four locking points act simultaneously to complete the locking of the locking beam 110, i.e. the locking of the base 200 and the battery box 100 is completed. The unlocking process is opposite to the locking process, and no other redundant actions exist. The beneficial effects of this application include: reliable locking, reduced risk of deformation and breakage of the locking structure, increased secondary failure protection, and reduced risk of disengagement of the battery box 100 from the base 200; the vibration amplitude of the lock tongue 213 is reduced, and the service cycle of the power device 212 and the internal shaft sleeve can be greatly prolonged; the charging muzzle 150 may be installed at a side of the bottom frame 141 to realize a charging and discharging function of the battery case 100 on the battery case 100, saving space.

On the other hand, the application also provides an electric heavy truck, which comprises a whole truck and the heavy truck power-exchanging locking structure 10 arranged on the whole truck and described above. The electric heavy truck comprises the same structure and beneficial effects as the heavy truck power-changing locking structure 10 in the previous embodiment. The structure and the beneficial effects of the heavy truck power conversion locking structure 10 have been described in detail in the foregoing embodiments, and are not described in detail herein.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. The heavy truck power-changing locking structure (10) comprises a base (200) and a battery box (100) arranged on the base (200), and is characterized in that,

the battery box is characterized in that a bottom frame (141) of the battery box (100) is arranged on the base (200), a plurality of locking beams (110) are further arranged in the bottom frame (141), a locker (210) is arranged on the base (200), the locker (210) comprises two locking vertical plates (211), a power device (212) and locking bolts (213) connected with the power device (212), the locking beams (110) are arranged between the two opposite locking vertical plates (211), and the locking bolts (213) are pushed to sequentially penetrate through the two locking vertical plates (211) through the power device (212), so that the locking beams (110) are fixed between the base (200) and the locking bolts (213).

2. The heavy truck power conversion locking structure (10) according to claim 1, wherein a wedge block (120) is arranged on one side of the locking beam (110) facing the locking bolt (213), the surface of one side of the locking bolt (213) contacted with the locking beam (110) is an inclined surface, and the locking bolt (213) is contacted and pressed with the wedge block (120) along with the extension of the locking bolt (213) to the locking vertical plate (211).

3. The heavy truck power conversion locking structure (10) according to claim 1, wherein a guide plate (215) is further arranged at the top end of the locking vertical plate (211), the guide plate (215) is provided with an inclined surface, and the locking cross beam (110) is guided by the inclined surface to be placed between the two opposite locking vertical plates (211).

4. The heavy truck power changing locking structure (10) according to claim 1, wherein a plurality of guide posts (221) are arranged on the base (200), a guide block with a guide hole (130) is arranged on a bottom frame (141) of the battery box (100), and the battery box (100) is positioned at the arrangement position on the base (200) by penetrating the guide posts (221) into the guide hole (130).

5. The heavy truck power conversion locking structure (10) as claimed in claim 1, wherein the bottom frame (141) of the battery box (100) is rectangular, and a plurality of locking beams (110) are arranged between two opposite side frames of the bottom frame (141) at intervals in parallel.

6. The heavy truck power conversion locking structure (10) according to claim 1, characterized in that the protruding direction of the lock tongue (213) is toward the inside or outside of the bottom frame (141).

7. The heavy truck power conversion locking structure (10) as claimed in claim 1, wherein the power device (212) is a cylinder or a hydraulic cylinder, and a piston rod of the power device (212) and the lock tongue (213) are coaxial.

8. The heavy truck power change locking structure (10) of claim 5, characterized in that a charging gun port (150) is provided on the frame of the bottom frame (141) to which the locking beam (110) is not connected, for connecting a charging gun to charge and discharge the battery box (100).

9. The heavy truck power change locking structure (10) as set forth in claim 8, wherein said battery box (100) includes a box frame (140) for supporting said battery box (100) and a plurality of battery cells disposed in said box frame (140), said bottom frame (141) being located at a bottom of said box frame (140), a plurality of said battery cells being connected to said charging muzzle (150).

10. An electric heavy truck characterized by comprising a whole truck and a heavy truck power-changing locking structure (10) as claimed in any one of claims 1-9 arranged on the whole truck.

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