Battery protection structure and electric tractor

Abstract

The utility model provides a battery protection structure and electric tractor, including the mounting box, the outside of mounting box is connected with the protective shell, the top of protective shell inner cavity is provided with the pressing part, the one end of pressing part far away from the protective shell is connected with the outside of mounting box, the bottom of protective shell inner cavity is provided with the damping part, and the damping part is connected with the outside of the mounting box. And one end, far away from the protective shell, of the damping part is connected with the outer side of the bottom end of the mounting box. When the tractor runs on a bumpy uneven road surface, the abutting part can play a damping and buffering role in the peripheral direction of the battery, the damping part can play a damping and buffering role in the vertical direction of the battery, and through mutual cooperation of the abutting part and the damping part, the influence of bumping on the battery is eliminated, and the battery is protected.

Description

Technical Field

[0001] The utility model relates to the field of protective structures, in particular to a battery protective structure and an electric tractor. Background Art

[0002] An electric tractor is a mechanical device that uses an electric drive system to achieve traction and transportation. It has the characteristics of simple structure, low vibration, low noise and no pollution. Electric tractors have become an important symbol of the further development of agricultural mechanization.

[0003] The battery protection of existing electric tractors all adds some simple shock-proof and decompression structures, and the ability to buffer impact is relatively limited. When electric tractors travel on uneven roads, there will inevitably be bumps. Once the bumps are too large, it is easy to damage the battery, thereby causing economic losses.

[0004] In view of this, we propose a battery protection structure and an electric tractor. Utility Model Content

[0005] The utility model provides a battery protection structure and an electric tractor to solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides a battery protection structure, comprising an installation box, a protective shell is connected to the outside of the installation box, a pressing portion is provided on the side wall of the inner cavity of the protective shell, an end of the pressing portion away from the protective shell is connected to the outer side of the installation box, a shock absorbing portion is provided at the bottom of the inner cavity of the protective shell, and an end of the shock absorbing portion away from the protective shell is connected to the outer side of the bottom end of the installation box;

[0008] The pressing portion includes a positioning plate, one side of the positioning plate is connected to the side wall of the inner cavity of the protective shell, the other side of the positioning plate is connected to a first damping spring, one end of the first damping spring away from the positioning plate is connected to a pressing plate, and the side of the pressing plate away from the first damping spring is connected to the outer side of the installation box;

[0009] The shock absorbing part includes a support plate, one side of the support plate is connected to the outer side of the bottom of the installation box, the other side of the support plate is connected to a second damping spring, one end of the second damping spring away from the support plate is connected to a bottom plate, and one end of the bottom plate away from the second damping spring is connected to the bottom of the inner cavity of the protective shell.

[0010] Furthermore, a ball groove is provided on the pressure plate, and a ball is installed in the ball groove.

[0011] Furthermore, an insulating box is provided in the inner cavity of the installation box, and a partition is provided inside the insulating box. The partition divides the inner cavity of the insulating box into a plurality of cavities, and battery packs are installed in the cavities.

[0012] Furthermore, a slot and a sealing groove are provided on the top surface of the installation box, wherein the slot is located outside the sealing groove, the slot is close to the outer circumference of the top surface of the installation box, and the sealing groove is close to the inner circumference of the top surface of the installation box.

[0013] Furthermore, a sealing cover body is connected to the top of the installation box, and the sealing cover body includes a cover plate, and bolts are rotatably installed at the four corners of the cover plate, and the bottom of the bolts is threadedly installed with the top of the installation box.

[0014] Furthermore, the bottom of both ends of the cover plate is provided with insert strips, and the insert strips cooperate with the slots on the top of the installation box. The bottom of the cover plate is provided with a sealing ring, and the sealing ring cooperates with the sealing groove on the top of the installation box.

[0015] Furthermore, an insulating plate is provided at the bottom of the cover plate, and the bottom of the insulating plate matches with the top of the insulating box in the inner cavity of the installation box.

[0016] Furthermore, a retaining ring is provided on the outer surface of the cover plate, and the retaining ring covers the interval between the cover plate and the installation box.

[0017] Furthermore, a rubber gasket is provided on the top of the protective shell, and the rubber gasket covers the gap between the protective shell and the installation box.

[0018] In a second aspect, the utility model provides an electric tractor, comprising a tractor body and a battery protection structure as described in the first aspect and arranged on the tractor body.

[0019] Compared with the prior art, the utility model has the following technical effects:

[0020] In the utility model, the pressing part and the shock absorbing part are arranged in the inner cavity of the protective shell, the pressing part is arranged on the side wall of the inner cavity of the protective shell, and the shock absorbing part is arranged on the bottom of the inner cavity of the protective shell. The pressing part can play a role of buffering support for the outer sides of the installation box, and the shock absorbing part can play a role of buffering support for the upper and lower parts of the installation box. The pressing part includes a positioning plate, a first damping spring and a pressing plate, the positioning plate is connected to the protective shell, and the pressing plate and the positioning plate are connected through the first damping spring. Through the mutual cooperation between the positioning plate, the first damping spring and the pressing plate, when vibration occurs around the outer side of the installation box, the installation box squeezes the pressing plate, and the pressing plate squeezes the first damping spring to effectively buffer the vibration around the outer side of the installation box. The shock absorbing part includes a bottom plate, a second damping spring and a support plate, the support plate is connected to the protective shell, the bottom plate and the support plate are connected through the second damping spring, and through the mutual cooperation between the bottom plate, the second damping spring and the support plate, when the installation box vibrates up and down, the installation box squeezes the support plate, and the support plate squeezes the second damping spring to effectively buffer the vibration of the installation box up and down. When the electric tractor is driving on an uneven road, bumps are inevitably generated, and the pressing part and the shock absorbing part play a shock absorbing and buffering role on the installation box to ensure that the battery in the installation box is not damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a battery protection structure according to an embodiment of the utility model;

[0022] Figure 2 A cross-sectional schematic diagram of a battery protection structure according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the installation box, insulation box, cross partition and battery pack of the embodiment of the utility model;

[0024] Figure 4 It is a cross-sectional schematic diagram of the installation box, the insulation box, the cross partition and the battery pack of the embodiment of the utility model;

[0025] Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle;

[0026] Figure 6 This is an exploded schematic diagram of a sealing cover body according to an embodiment of the utility model;

[0027] Figure 7 It is a cross-sectional schematic diagram of a protective shell according to an embodiment of the utility model;

[0028] Figure 8 It is a structural schematic diagram of the pressing part of an embodiment of the utility model;

[0029] Fig. 9 It is a schematic structural diagram of the shock absorbing part of an embodiment of the utility model.

[0030] Explanation of the accompanying drawings: 1. Installation box, 2. Insulation box, 3. Cross partition, 4. Battery pack, 5. Slot, 6. Sealing groove, 7. Cover plate, 8. Insert, 9. Insulation plate, 10. Sealing ring, 11. Protective shell, 12. Pressing part, 121. Positioning plate, 122. First damping spring, 123. Pressing plate, 124. Ball groove, 125. Ball, 13. Shock absorbing part, 131. Bottom plate, 132. Second damping spring, 133. Support plate, 134. Screw, 135. Locking nut, 14. Fixing frame, 15. Rubber gasket, 16. Retaining ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Embodiment 1

[0033] See also Figures 1 to 9 The present embodiment provides a battery protection structure, including an installation box 1, a protective shell 11 is installed on the outside of the installation box 1, and a pressing portion 12 is arranged around the top of the inner cavity of the protective shell 11, one end of the pressing portion 12 is fixedly connected to the protective shell 11, and the other end of the pressing portion 12 is movably connected to the outer wall of the installation box 1, and a shock absorbing portion 13 is arranged at the bottom of the inner cavity of the protective shell 11, one end of the shock absorbing portion 13 is fixedly connected to the protective shell 11, and the other end of the shock absorbing portion 13 is movably connected to the outer wall of the bottom end of the installation box 1.

[0034] The pressing portion 12 includes a positioning plate 121, one side of the positioning plate 121 is connected to the inner cavity side wall of the protective shell 11, the other side of the positioning plate 121 is connected to a first damping spring 122, one end of the first damping spring 122 away from the positioning plate 121 is connected to a pressing plate 123, and the side of the pressing plate 123 away from the first damping spring 122 is movably connected to the outer side of the installation box 1.

[0035] The shock absorbing part 13 includes a support plate 133, one side of the support plate 133 is movably connected to the outer side of the bottom of the installation box 1, the other side of the support plate 133 is connected to a second damping spring 132, one end of the second damping spring 132 away from the support plate 133 is connected to a bottom plate 131, and one end of the bottom plate 131 away from the second damping spring 132 is fixedly connected to the bottom of the inner cavity of the protective shell 11.

[0036] The pressing part 12 and the shock absorbing part 13 are arranged in the inner cavity of the protective shell 11. The pressing part 12 is arranged at the top of the inner cavity of the protective shell 11, and the shock absorbing part 13 is arranged at the bottom of the inner cavity of the protective shell 11. The pressing part 12 can play a role of buffering support for the outer periphery of the installation box 1, and the shock absorbing part 13 can play a role of buffering support for the upper and lower parts of the installation box 1. The pressing part 12 includes a positioning plate 121, a first damping spring 122 and a pressing plate 123. The positioning plate 121 is connected to the protective shell 11, and the pressing plate 123 is connected to the positioning plate 121 through the first damping spring 122. Through the mutual cooperation between the positioning plate 121, the first damping spring 122 and the pressing plate 123, when vibration occurs around the outer periphery of the installation box 1, the installation box 1 squeezes the pressing plate 123, and the pressing plate 123 squeezes the first damping spring 122, so as to effectively buffer the vibration around the outer periphery of the installation box 1. The shock absorbing part 13 includes a support plate 133, a second damping spring 132 and a bottom plate 131. The bottom plate 131 is connected to the protective shell 11. The support plate 133 and the bottom plate 131 are connected through the second damping spring 132. Through the cooperation between the support plate 133, the second damping spring 132 and the bottom plate 131, when the installation box 1 vibrates up and down, the installation box 1 squeezes the bottom plate 131, and the bottom plate 131 squeezes the second damping spring 132 to effectively buffer the vibration of the installation box 1 up and down. In the process of the electric tractor driving on the uneven road, it is inevitable to produce bumps. The pressing part 12 and the shock absorbing part 13 play a shock absorbing and buffering role on the installation box 1 to ensure that the battery in the installation box 1 is not damaged.

[0037] Specifically, through holes are provided at the positions near the four corners at the bottom of the inner cavity of the protective shell 11, and screws 134 are installed in the four through holes. The support plate 133 is movably connected to the top of the screw 134, and the bottom plate 131 is arranged in the middle of the screw 134. The second damping spring 132 is connected between the support plate 133 and the bottom plate 131, and the second damping spring 132 is sleeved on the screw 134. The bottom plate 131 is connected to the bottom of the inner cavity of the protective shell 11 through a locking nut 135. The screw 134 passes through the through hole, and the bottom plate 131, the second damping spring 132 and the support plate 133 are installed at the bottom of the inner cavity of the protective shell 11. The locking nut 135 is rotatably installed on the screw 134 from the outside of the protective shell 11. By tightening the locking nut 135, the shock absorbing part 13 can be stably and firmly installed at the bottom end of the protective shell 11.

[0038] Specifically, a plurality of ball grooves 124 are provided on the surface of the side of the pressing plate 123 close to the installation box 1. The plurality of ball grooves 124 are arranged in a rectangular array, and a ball 125 is movably installed in the inner cavity of each ball groove 124. When the installation box 1 and the battery pack 4 are placed inside the protective shell 11, the ball 125 will contact the outer surface of the installation box 1, and the installation box 1 moves downward. The friction between the installation box 1 and the ball 125 is small, making the installation box 1 more stable and fast when placed. In addition, the ball 125 can reduce the friction of the pressing plate 123 on the installation box 1 when the installation box 1 vibrates, thereby reducing the wear of the installation box 1.

[0039] Specifically, the inner cavity of the installation box 1 is provided with an insulating box 2, and the installation box 1 can provide protection for the insulating box 2. The top surface of the insulating box 2 matches the bottom surface of the insulating plate 9, and the insulating box 2 and the insulating plate 9 are made of insulating materials, so that the contact between the battery pack 4 in the insulating box 2 and the external environment can be isolated, thereby preventing the battery pack 4 from being in electrical contact with other parts of the electric tractor, and avoiding short circuit or other safety hazards of the battery pack 4. The insulating plate 9 is arranged in the middle position of the bottom surface of the cover plate 7, and the insulating plate 9 can fix the battery pack 4 in the insulating box 2, and also increase the sealing of the insulating box 2. The inner cavity of the insulator 2 is fixed with a partition. As a preferred embodiment, the partition is a cross partition 3, and the cross partition 3 can strengthen the structural strength of the insulating box 2. The cross partition 3 divides the inner cavity space in the insulating box 2 into four, and each inner cavity space is installed with a battery pack 4. The four battery packs 4 are distributed in a rectangular array, and the cross partition 3 separates the batteries to prevent the battery packs 4 from short circuiting with each other or causing other safety accidents.

[0040] Specifically, the top surface of the installation box 1 is provided with threaded holes, slots 5 and sealing grooves 6. The threaded holes are provided at the four corners of the top surface of the installation box 1. The slots 5 are provided at the left and right ends of the top surface of the installation box 1. The sealing grooves 6 are provided around the top surface of the installation box 1. The slots 5 are located outside the sealing grooves 6, and the slots 5 are close to the outer circumference of the top surface of the installation box 1, and the sealing grooves 6 are close to the inner circumference of the top surface of the installation box 1. The top of the installation box 1 is connected with a sealing cover body, which seals the openings of the installation box 1 and the insulation box 2 to improve the airtightness of the battery pack 4, so that the battery pack 4 is not affected by environmental factors such as moisture and dust. The sealing cover body includes a cover plate 7, which is matched with the top of the installation box 1, and the cover plate 7 can seal the installation box 1. Hexagon socket head bolts are rotatably installed at the four corners of the cover plate 7, and the bottoms of the four hexagon socket head bolts are matched with the threaded holes at the top of the installation box 1. The cover plate 7 and the installation box 1 are assembled by threads. Insert strips 8 are provided at the bottom of both ends of the cover plate 7, and the insert strips 8 cooperate with the slots 5 at the top of the installation box 1, thereby increasing the stability between the cover plate 7 and the installation box 1. A sealing ring 10 is provided at the bottom of the cover plate 7, and the sealing ring 10 can be inserted into the inner cavity of the sealing groove 6 at the top of the installation box 1. The sealing ring 10 cooperates with the sealing groove 6 to increase the sealing between the cover plate 7 and the installation box 1, thereby preventing foreign substances from entering the installation box 1.

[0041] Specifically, a retaining ring 16 is provided on the outer surface of the cover plate 7, and the retaining ring 16 covers the interval between the cover plate 7 and the installation box 1. The retaining ring 16 can resist soil to prevent foreign substances from invading the battery pack 4.

[0042] Specifically, a rubber gasket 15 is provided on the top surface of the protective shell 11, the inner wall of the rubber gasket 15 is tightly fitted with the outer wall of the installation box 1, and the rubber gasket 15 covers the gap between the protective shell 11 and the installation box 1. The rubber gasket 15 can block the gap between the installation box 1 and the open end of the protective shell 11, and effectively prevent external dirt from entering the interior of the protective shell 11.

[0043] Specifically, fixing frames 14 are disposed at the four corners of the bottom of the protective shell 11 , and the fixing frames 14 can provide stable support for the protective shell 11 .

[0044] Specifically, the battery protection structure can not only protect and reduce shock to the battery pack 4 to prevent the battery pack 4 from physical damage, but also prevent the battery pack 4 from being affected by environmental factors such as moisture and dust, thereby ensuring the safety and reliability of the battery pack 4 and increasing the service life of the battery pack 4.

[0045] Embodiment 2

[0046] This embodiment provides an electric tractor, including the battery protection structure of the first embodiment, and the parts repeated with the first embodiment are not described in detail here.

[0047] An electric tractor comprises a tractor body, wherein a battery part on the tractor body is mounted with a battery protection structure via a fixing frame 14.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery protection structure, characterized in that: The invention comprises an installation box (1), the outer side of the installation box (1) is connected to a protective shell (11), a side wall of the inner cavity of the protective shell (11) is provided with a pressing portion (12), one end of the pressing portion (12) away from the protective shell (11) is connected to the outer side of the installation box (1), and a shock absorbing portion (13) is provided at the bottom of the inner cavity of the protective shell (11), and one end of the shock absorbing portion (13) away from the protective shell (11) is connected to the outer side of the bottom end of the installation box (1); The pressing portion (12) comprises a positioning plate (121), one side of the positioning plate (121) is connected to the inner cavity side wall of the protective shell (11), the other side of the positioning plate (121) is connected to a first damping spring (122), one end of the first damping spring (122) away from the positioning plate (121) is connected to a pressing plate (123), and the side of the pressing plate (123) away from the first damping spring (122) is connected to the outer side of the installation box (1); The shock absorbing part (13) comprises a supporting plate (133), one side of the supporting plate (133) is connected to the outer side of the bottom of the installation box (1), the other side of the supporting plate (133) is connected to a second damping spring (132), one end of the second damping spring (132) away from the supporting plate (133) is connected to a bottom plate (131), and one end of the bottom plate (131) away from the second damping spring (132) is connected to the bottom of the inner cavity of the protective shell (11).

2. A battery protection structure according to claim 1, characterized in that: The pressing plate (123) is provided with a ball groove (124), and a ball (125) is installed in the ball groove (124).

3. A battery protection structure according to claim 1, characterized in that: An insulating box (2) is provided in the inner cavity of the installation box (1), and a partition is provided inside the insulating box (2), wherein the partition divides the inner cavity of the insulating box (2) into a plurality of cavities, and battery packs (4) are installed in the cavities.

4. A battery protection structure according to claim 1, characterized in that: The top surface of the installation box (1) is provided with a slot (5) and a sealing groove (6), wherein the slot (5) is located outside the sealing groove (6), the slot (5) is close to the outer circumference of the top surface of the installation box (1), and the sealing groove (6) is close to the inner circumference of the top surface of the installation box (1).

5. A battery protection structure according to claim 4, characterized in that: The top of the installation box (1) is connected to a sealing cover body, and the sealing cover body comprises a cover plate (7). Bolts are rotatably mounted at the four corners of the cover plate (7), and the bottom of the bolts is threadedly mounted on the top of the installation box (1).

6. A battery protection structure according to claim 5, characterized in that: Insert strips (8) are provided at the bottom of both ends of the cover plate (7), and the insert strips (8) match with the slots (5) at the top of the installation box (1). A sealing ring (10) is provided at the bottom of the cover plate (7), and the sealing ring (10) matches with the sealing groove (6) at the top of the installation box (1).

7. A battery protection structure according to claim 5, characterized in that: An insulating plate (9) is provided at the bottom of the cover plate (7), and the bottom of the insulating plate (9) matches the top of the insulating box (2) in the inner cavity of the installation box (1).

8. A battery protection structure according to claim 5, characterized in that: A retaining ring (16) is provided on the outer surface of the cover plate (7), and the retaining ring (16) covers the interval between the cover plate (7) and the installation box (1).

9. A battery protection structure according to claim 1, characterized in that: A rubber gasket (15) is provided on the top of the protective shell (11), and the rubber gasket (15) covers the gap between the protective shell (11) and the installation box (1).

10. An electric tractor, characterized in that: The utility model comprises a tractor body and a battery protection structure as claimed in any one of claims 1 to 9 arranged on the tractor body.

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