Tractor battery and tractor

Abstract

The tractor battery comprises a fixing cover, a shell and a battery cell module, the fixing cover is fixed on the upper side of the shell to form a square shell, the battery cell module comprises a plurality of blade battery cells, a support and a double-layer insulating plate, and the blade battery cells are fixed side by side through the support to form a battery cell group. The double-layer insulating plate wraps the outer side of the battery cell group to form a square battery cell module; fixing grooves matched with the battery cell modules in shape are formed in the shell, the height of the battery cell modules is the same as the depth of the fixing grooves, the battery cell modules are clamped in the fixing grooves, fixing steps are arranged on the inner wall of the shell, a pressing block is installed between every two opposite fixing steps, and the pressing blocks are located at notches in the upper ends of the fixing grooves; and the battery cell module is fixed in the fixing groove through the pressing block. According to the utility model, the battery cell module is fixed through the fixing groove and the pressing block, and the safety of the blade battery cell is ensured through the protection of the shell and the double-layer insulating plate; and through two pairs of handles on the fixed cover, the battery is convenient to carry and replace, and the battery replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a tractor battery and a tractor. Background Art

[0002] Tractors can be used to transport materials. On flat factory roads, wheeled tractors can be used to transport materials. In outdoor mountainous areas, rail-type tractors can be used to transport materials, which greatly improves the efficiency of material transportation. Tractors are divided into fuel tractors and electric tractors. In terms of size, electric tractors are smaller than fuel tractors, and in terms of operating noise, electric tractors are quieter than fuel tractors. Therefore, electric tractors have more advantages than fuel tractors in some specific usage scenarios.

[0003] Because electric tractors have a long operating time, it is generally required that the batteries of electric tractors be replaceable. Electric tractors will shake during driving, and the battery module is composed of many battery cells. Shaking with excessive frequency and amplitude can easily cause the welding connections of conductive components such as battery cell electrodes and buses inside the battery to break due to metal fatigue, which directly affects the service life of the battery and increases safety hazards during use.

[0004] Therefore, it is necessary to design a battery for a tractor that can well fix the internal battery cells. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a tractor battery and a tractor with a stable structure.

[0006] In a first aspect, the utility model provides a tractor battery, comprising a fixing cover, a shell and a cell module, wherein the fixing cover is fixed on the upper side of the shell to form a square shell, the cell module comprises a plurality of blade cells, a bracket and a double-layer insulating plate, the plurality of blade cells are fixed side by side into a cell group by the bracket, and the double-layer insulating plate is wrapped around the outer side of the cell group to form a square cell module; a fixing groove matching the shape of the cell module is arranged inside the shell, the height of the cell module is the same as the depth of the fixing groove, the cell module is stuck in the fixing groove, a fixing step is arranged on the inner wall of the shell, a pressing block is installed between two opposite fixing steps, the pressing block is located at the notch at the upper end of the fixing groove, the cell module is fixed in the fixing groove by the pressing block, the pressing block contacts the outermost insulating plate of the double-layer insulating plate on the upper side of the cell module, and the outermost insulating plates of the double-layer insulating plates on the other five sides of the cell module contact the inner wall of the fixing groove and the bottom of the fixing groove respectively.

[0007] In some embodiments, the double-layer insulating plate includes an inner insulating plate and an outer insulating plate, the inner insulating plate is arranged as a pad between the outer insulating plate and the battery cell group, the inner insulating plate includes a first inner insulating plate and a second inner insulating plate, a plurality of the first inner insulating plates are respectively attached to the four sides of the battery cell group in the width direction and the height direction, and a plurality of the second inner insulating plates are respectively attached to the two sides of the battery cell group in the length direction.

[0008] In some embodiments, the outer insulating plate includes a first outer insulating plate and a second outer insulating plate, the first outer insulating plate is in the shape of a square tube, and an opening is provided on both sides of the length direction of the first outer insulating plate, the first outer insulating plate is sleeved on the outer side of the battery cell group and multiple first inner insulating plates along the length direction of the battery cell group, the second inner insulating plate and the second outer insulating plate are both located at the opening of the first outer insulating plate, and the second outer insulating plate is attached to the outer side of the second inner insulating plate.

[0009] In some of the embodiments, a conductive block and a bus are provided on the bracket, the conductive block is welded and fixed to the electrode of the blade battery cell, the bus is conductively connected to the conductive block and the electrode of the blade battery cell, the conductive block is located between the bracket and the second outer insulating plate, a portion of the bus is located between the bracket and the second outer insulating plate, and the rest of the bus is exposed from the gap of the first outer insulating plate.

[0010] In some embodiments, the notch communicates with the opening.

[0011] In some embodiments, a first groove and a second groove are formed on the upper end surface of the fixed cover, and handles are fixed on the first groove and the second groove. The handles are not higher than the end surface of the fixed cover in the folded storage state.

[0012] In some embodiments, a lead groove and a wiring groove are formed on the upper end surface of the fixed cover, the lead groove and the wiring groove are communicated with the second groove, the wiring groove extends to the side wall of the fixed cover, and terminal wires electrically connected to the battery cell group are installed on the lead groove, and the part of the terminal wires exposed from the lead groove is routed along the lead groove, the second groove and the wiring groove in sequence.

[0013] In some of the embodiments, the terminal wires located in the lead groove, the second sink groove and the wiring groove are not higher than the upper end surface of the fixed cover.

[0014] In some embodiments, a fixing frame is provided on one side of the shell in the length direction, and the fixing frame includes a welding portion and a fixing leg. The welding portion is welded and fixed to the outer side wall of the shell, and a plurality of fixing legs extend outward in the width direction and the height direction respectively. The fixing leg is provided with a fixing hole at the end beyond the shell.

[0015] In a second aspect, the utility model further provides a tractor, comprising a power source, wherein the power source is the tractor battery described in the first aspect.

[0016] Compared with the prior art, the utility model has the following beneficial effects: a square battery module is formed by arranging blade batteries side by side, and the battery module is fixed by fixing grooves and pressing blocks to ensure that the internal blade batteries will not shake relative to the battery casing, and the safety of the blade batteries is ensured by the protection of the casing and the double-layer insulating plate; the two pairs of handles on the fixed cover facilitate the transportation and replacement of batteries, thereby improving the efficiency of battery replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the tractor battery according to an embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the exploded structure of the tractor battery according to an embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the battery cell module of the tractor battery according to an embodiment of the present application.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the battery cell module of the tractor battery according to an embodiment of the present application without the first outer insulating plate.

[0021] Reference numerals: 101, battery cell module;

[0022] 1. Shell; 11. Fixing groove; 12. Fixing step; 13. Narrowing portion; 14. First screw hole;

[0023] 2. Fixed cover; 21. First sink groove; 22. Second sink groove; 23. Lead groove; 24. Wire groove; 25. Handle; 26. Second screw hole; 27. Screw;

[0024] 3. Terminal wire; 31. Plug;

[0025] 4. Blade battery cell; 41. Electrode; 42. Conductive block; 43. Bus bar;

[0026] 5. Bracket; 51. Slot; 52. Welding hole; 53. Limiting groove;

[0027] 6. fixing ring; 61. profile hole; 62. card joint;

[0028] 71. first inner insulating plate; 72. second outer insulating plate; 73. first outer insulating plate; 74. notch; 75. opening; 76. second inner insulating plate;

[0029] 8. Briquetting;

[0030] 9. Fixing frame; 91. Welding part; 92. Fixing foot; 93. Fixing hole. DETAILED DESCRIPTION

[0031] The specific implementation modes of the present utility model are introduced with reference to the accompanying drawings.

[0032] refer to Figure 1 The figure is a schematic diagram of the three-dimensional structure of a tractor battery. The tractor battery is an overall cuboid, with a fixed cover 2 and a shell 1 at the top and bottom respectively. Four handles 25 are provided at the fixed cover 2 to facilitate workers to carry the tractor battery. A fixing frame 9 is provided on one side of the shell 1. The tractor battery is fixed to the tractor through the fixing frame 9 to prevent the tractor battery from shaking during the movement of the tractor.

[0033] refer to Figures 1 to 4 A tractor battery comprises a fixing cover 2, a shell 1 and a cell module 101. The fixing cover 2 is fixed on the upper side of the shell 1 to form a square shell. The cell module 101 comprises a plurality of blade cells 4, a bracket 5 and a double-layer insulating plate. The plurality of blade cells 4 are fixed side by side into a cell group through the bracket 5. The double-layer insulating plate is wrapped around the outer side of the cell group to form a square cell module 101. A fixing groove 11 matching the shape of the cell module 101 is provided inside the shell 1. The height of the cell module 101 is the same as the depth of the fixing groove 11. The battery cell module 101 is stuck in the fixed groove 11, and a fixed step 12 is provided on the inner wall of the shell 1. A pressure block 8 is installed between the two opposite fixed steps 12. The pressure block 8 is located at the notch at the upper end of the fixed groove 11. The battery cell module 101 is fixed in the fixed groove 11 by the pressure block 8. The pressure block 8 contacts the outermost insulating plate of the double-layer insulating plate on the upper side of the battery cell module 101, and the outermost insulating plates of the double-layer insulating plates on the other five sides of the battery cell module 101 contact the inner wall of the fixed groove 11 and the bottom of the fixed groove 11 respectively.

[0034] The tractor battery of the present embodiment adopts a square battery module 101 in which blade batteries 4 are arranged side by side, so that the battery module is relatively square. The battery module 101 is embedded in a fixing groove 11 of matching shape and then fixed at the notch of the fixing groove 11 by a pressing block 8, so that the six sides of the battery module 101 are snap-fitted and fixed to the battery shell 1, ensuring that the internal blade batteries 4 will not shake relative to the battery shell 1. The safety of the blade batteries 4 is ensured by the protection of the shell 1; the two pairs of handles 25 on the fixing cover 2 facilitate the transportation and replacement of the battery, thereby improving the efficiency of battery replacement.

[0035] In order to protect the battery module 101, in this embodiment, reference Figures 1 to 4The double-layer insulating plate includes an inner insulating plate and an outer insulating plate. The inner insulating plate is arranged between the outer insulating plate and the battery cell group as a pad. The inner insulating plate includes a first inner insulating plate 71 and a second inner insulating plate 76. Multiple first inner insulating plates 71 are respectively attached to the four sides of the battery cell group in the width direction and the height direction, and multiple second inner insulating plates 76 are respectively attached to the two sides of the battery cell group in the length direction.

[0036] It needs to be further explained that the inner insulating plate and the outer insulating plate are both epoxy plates, the battery cell group has two brackets 5, a bracket 5 is fixed at each end of the blade battery cell 4, the bracket 5 includes a plurality of insulating blocks, the plurality of insulating blocks are arranged side by side in two rows, a slot 51 is formed between two adjacent insulating blocks, the end face of the blade battery cell 4 is inserted into the slot 51, and a limiting groove 53 is provided on each bracket 5, a fixing ring 6 is bound in the limiting groove 53, and the fixing ring 6 is used to tighten the bracket 5 and the plurality of blade batteries 4 to ensure that the blade batteries 4 and the bracket 5 are stably connected, wherein a molded hole 61 and a clamping joint 62 are respectively provided at the two ends of the fixing ring 6, after the fixing ring 6 is wound into a square ring and clamped in the limiting groove 53 of the bracket 5, the clamping joint 62 is clamped into the molded hole 61, so that the two ends of the fixing ring 6 will not loosen, ensuring that the fixing ring 6 can be stably clamped on the bracket 5.

[0037] It can be understood that, with such a configuration, the inner insulating plate is placed at a lower position of the battery cell group, and the surface of the inner insulating plate will be higher than the more protruding part of the battery cell group. The outer insulating plate on the outside forms a double-layer insulating plate structure that can well protect the battery cell group. The double-layer insulating plate structure is used for buffering to ensure that the battery cell group wrapped by the double-layer insulating plate can reduce the impact. At the same time, the double-layer insulating plate can ensure that the battery cell module 101 can be better embedded in the fixing groove 11, so that the battery cell module 101 can be more stably stuck in the fixing groove 11, and the battery cell module 101 will not shake relative to the shell 1 in all dimensional directions.

[0038] In order to better protect the battery module 101, in this embodiment, reference Figures 1 to 4 The outer insulating plate includes a first outer insulating plate 73 and a second outer insulating plate 72. The first outer insulating plate 73 is in a square tube shape. An opening 75 is provided on both sides of the length direction of the first outer insulating plate 73. The first outer insulating plate 73 is sleeved on the outer side of the battery cell group and multiple first inner insulating plates 71 along the length direction of the battery cell group. The second inner insulating plate 76 and the second outer insulating plate 72 are both located at the opening 75 of the first outer insulating plate 73, and the second outer insulating plate 72 is attached to the outer side of the second inner insulating plate 76.

[0039] It can be understood that, with such a configuration, the four sides of the battery cell group are wrapped with the flat, large-area first outer insulating plate 73, so that the first inner insulating plate 71 will not loosen from the battery cell group, and at the same time, it is ensured that the battery cell module 101 can have four relatively flat sides, so that the battery cell module 101 has good contact with the inner wall of the fixing groove 11, and the first outer insulating plate 73 and the second outer insulating plate 72 can both buffer the external stress well and protect the safety of the blade battery 4.

[0040] In order to install the busbar 43, in this embodiment, refer to Figures 2 to 4 A conductive block 42 and a bus 43 are provided on the bracket 5. The conductive block 42 is welded and fixed to the electrode 41 of the blade battery cell 4. The bus 43 is conductively connected to the conductive block 42 and the electrode 41 of the blade battery cell 4. The conductive block 42 is located between the bracket 5 and the second outer insulating plate 72. A part of the bus 43 is located between the bracket 5 and the second outer insulating plate 72, and the rest of the bus 43 is exposed from the notch 74 of the first outer insulating plate 73.

[0041] It should be further explained that, in order to facilitate the welding of the electrode 41 of the blade battery cell 4 and the conductive block 42, the bracket 5 is provided with a welding hole 52 for exposing the electrode 41 of the blade battery cell 4, and the electrodes 41 of multiple adjacent blade batteries 4 are welded through a conductive block 42, and the battery cell group realizes series and parallel connection of the blade batteries 4 through multiple conductive blocks 42.

[0042] It can be understood that, with such a configuration, the conductive block 42 and the bus bar 43 will be higher than the end face of the bracket 5. The end face of the bracket 5 is raised by the second inner insulating plate 76 at a position where there is no conductive block 42 and the bus bar 43. The end face of the second inner insulating plate 76 will be higher than the conductive block 42, so that the second outer insulating plate 72 will not be directly pressed on the conductive block 42 under the support of the second inner insulating plate 76. The second outer insulating plate 72 is in contact with the inner wall of the fixing groove 11, forming a buffer between the bracket 5 of the battery cell module 101 and the inner wall of the fixing groove 11, thereby ensuring the stability of the welding point between the conductive block 42 and the electrode 41 of the blade battery cell 4.

[0043] In order to facilitate the installation of the busbar 43, in this embodiment, reference Figures 2 to 4 The notch 74 is connected to the opening 75 .

[0044] It can be understood that, with such a configuration, the bus 43 is L-shaped, and the portion of the bus 43 at the end face of the bracket 5 is configured to be flat, and the flat portion of the bus 43 will contact the second outer insulating plate 72, thereby ensuring that the bus 43 will not pierce the second outer insulating plate 72; the portion of the bus 43 on the side wall of the bracket 5 is configured to have a "J"-shaped cross-section, and the portion of the bus 43 is exposed through the notch 74 to facilitate wiring.

[0045] In order to facilitate the transportation of the battery, in this embodiment, reference Figure 1 and Figure 2 A first sinking groove 21 and a second sinking groove 22 are formed on the upper end surface of the fixed cover 2. A handle 25 is fixed on both the first sinking groove 21 and the second sinking groove 22. The handle 25 does not protrude above the end surface of the fixed cover 2 in the folded storage state.

[0046] It can be understood that, by such arrangement, two pairs of handles 25 are installed on the first sink 21 and the second sink 22, and two pairs of handles 25 can be used by two people to lift the battery together, so as to facilitate the transportation of the battery. Through the design of the sink, the handles 25 can be retracted in the sink in the folded storage state, so that the upper end surface of the fixed cover 2 is flat. After the battery is installed on the tractor, a structure such as a seat can be conveniently placed above the battery, or the battery can be conveniently installed in the square groove on the tractor.

[0047] In order to facilitate wiring, in this embodiment, reference Figure 1 to Figure 2 A lead groove 23 and a wiring groove 24 are recessed on the upper end surface of the fixed cover 2. The lead groove 23 and the wiring groove 24 are communicated with the second recessed groove 22. The wiring groove 24 extends to the side wall of the fixed cover 2. The terminal wire 3 electrically connected to the battery cell group is installed on the lead groove 23. The part of the terminal wire 3 exposed from the lead groove 23 is routed along the lead groove 23, the second recessed groove 22 and the wiring groove 24 in sequence.

[0048] It needs to be further explained that the space between the fixed cover 2 and the pressing block 8 can be used to place the circuit board of the battery. The circuit board can be stably installed. Under the protection of the fixed cover 2 and the shell 1, the circuit board will not be squeezed, thereby ensuring the safety of the circuit board. After the terminal wire 3 is led out from the fixed cover 2, a plug 31 connected to an external device is provided at the end of the terminal wire 3.

[0049] It can be understood that with such a configuration, the terminal wire 3 is conductively connected to the circuit board, the bus 43, the conductive block 42, and the electrode 41 of the blade battery cell 4. The terminal wire 3 is led out from the lead groove 23. Leading out the terminal wire 3 on the fixed cover 2 can ensure that the shell 1 has a smoother surface and can better protect the internal battery module 101.

[0050] In order to make the upper end surface of the fixed cover 2 flat, in this embodiment, Figure 1 and Figure 2 The terminal wires 3 located in the lead groove 23 , the second sink groove 22 and the wiring groove 24 are not higher than the upper end surface of the fixed cover 2 .

[0051] It can be understood that, with such a configuration, the terminal wire 3 is routed through the lead groove 23, the second sink groove 22 and the routing groove 24, so that the terminal wire 3 will not be higher than the upper end surface of the fixed cover 2, making the upper end surface of the fixed cover 2 flat, making it convenient to install the remaining structure of the tractor above the fixed cover 2, or to install the battery in the square groove on the tractor.

[0052] In order to fix the battery more stably to the external device, in this embodiment, reference Figure 1 and Figure 2 A fixing frame 9 is provided on one side of the shell 1 in the length direction, and the fixing frame 9 includes a welding portion 91 and a fixing leg 92. The welding portion 91 is welded and fixed to the outer wall of the shell 1, and a plurality of fixing legs 92 extend outward in the width direction and the height direction respectively. The fixing leg 92 is provided with a fixing hole 93 at the end beyond the shell 1.

[0053] It can be understood that, with such an arrangement, the battery is fixed to the tractor through the fixing frame 9. When the battery is installed on the tractor, the battery can be loaded into the square groove of the tractor (not shown in the drawings) in the manner of a drawer. The shape of the square groove matches the shape of the battery. Except for the outer wall of the fixing frame 9, the other five outer walls of the battery are in contact with the five inner walls of the square groove respectively. The battery can be well installed in the square groove through the flat surface of the battery. The fixing holes 93 on the four fixing feet 92 of the fixing frame 9 are locked with the tractor by bolts, thereby ensuring that the battery can be stably installed on the tractor.

[0054] It should be further explained that the opening 75 of the fixing groove 11 is smaller than the opening 75 of the housing 1. There is a certain distance between the outer wall of the housing 1 and the inner wall of the fixing groove 11. This distance can be set as a cavity, or some plastic cushions can be placed to better protect the battery module 101. A constricted portion 13 is set at the opening 75 of the upper end surface of the housing 1. The constricted portion 13 is inserted into the fixing cover 2 and is in contact with the inner wall of the fixing cover 2. A plurality of matching first screw holes 14 and second screw holes 26 are respectively set on the constricted portion 13 and the fixing cover 2. The fixing cover 2 is fixed to the housing 1 by screws 27 between the first screw holes 14 and the second screw holes 26.

[0055] The embodiment of the present application adopts a side-by-side arrangement of blade batteries 4 to form a square battery module 101, and fixes the battery module 101 through the fixing groove 11 and the pressing block 8 to ensure that the internal blade batteries 4 will not shake relative to the battery shell 1, and the safety of the blade batteries 4 is guaranteed by the protection of the shell 1 and the double-layer insulation board; the two pairs of handles 25 on the fixed cover 2 are used to facilitate the transportation and replacement of batteries, thereby improving the efficiency of battery replacement, and the design of the sinking groove ensures that the handles 25 and the terminal wire 3 will not be higher than the upper end surface of the fixed cover 2, so that the surface of the square shell composed of the fixed cover 2 and the shell 1 is smooth, which is convenient for the installation of the battery.

[0056] An embodiment of the present application further provides a tractor, comprising a power source, wherein the power source is the tractor battery mentioned above.

[0057] The battery is in the shape of a rectangular parallelepiped as a whole, and a square groove matching the shape of the battery needs to be designed on the tractor. The battery can be pulled into the corresponding square groove on the tractor by the flat surface of the battery and the handle 25 on the fixed cover 2. The battery is locked on the tractor by the fixed foot 92. The battery is restricted by the square groove and the fixing frame 9 to ensure that the battery will not shake relative to the tractor, thereby avoiding collision between the battery and the tractor. The battery cell module 101 is restricted by the internal fixing groove 11 of the battery, and the battery cell module 101 is fixed by the pressing block 8, so that the battery cell module 101 is fixed together with the shell 1, and the blade battery cell 4 is protected by the double-layer insulating plate to improve the safety performance of the battery.

[0058] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tractor battery, characterized in that: The battery module comprises a fixing cover, a shell and a battery cell module, wherein the fixing cover is fixed on the upper side of the shell to form a square shell, the battery cell module comprises a plurality of blade batteries, a bracket and a double-layer insulating plate, the plurality of blade batteries are fixed side by side into a battery cell group by the bracket, and the double-layer insulating plate is wrapped around the outer side of the battery cell group to form a square battery cell module; a fixing groove matching the shape of the battery cell module is arranged inside the shell, the height of the battery cell module is the same as the depth of the fixing groove, the battery cell module is stuck in the fixing groove, a fixing step is arranged on the inner wall of the shell, a pressing block is installed between two opposite fixing steps, the pressing block is located at the notch at the upper end of the fixing groove, the battery cell module is fixed in the fixing groove by the pressing block, the pressing block contacts the outermost insulating plate of the double-layer insulating plate on the upper side of the battery cell module, and the outermost insulating plates of the double-layer insulating plates on the other five sides of the battery cell module contact the inner wall of the fixing groove and the bottom of the fixing groove respectively.

2. The tractor battery according to claim 1, characterized in that: The double-layer insulating plate includes an inner insulating plate and an outer insulating plate. The inner insulating plate is arranged as a pad between the outer insulating plate and the battery cell group. The inner insulating plate includes a first inner insulating plate and a second inner insulating plate. Multiple first inner insulating plates are respectively attached to the four side surfaces of the battery cell group in the width direction and the height direction, and multiple second inner insulating plates are respectively attached to the two side surfaces of the battery cell group in the length direction.

3. The traction vehicle battery according to claim 2, characterized in that: The outer insulating plate includes a first outer insulating plate and a second outer insulating plate, the first outer insulating plate is in the shape of a square tube, and an opening is provided on both sides of the length direction of the first outer insulating plate, the first outer insulating plate is sleeved on the outer side of the battery cell group and multiple first inner insulating plates along the length direction of the battery cell group, the second inner insulating plate and the second outer insulating plate are both located at the opening of the first outer insulating plate, and the second outer insulating plate is attached to the outer side of the second inner insulating plate.

4. The tractor battery according to claim 3, characterized in that: A conductive block and a bus are provided on the bracket, the conductive block is welded and fixed to the electrode of the blade battery cell, the bus is conductively connected to the conductive block and the electrode of the blade battery cell, the conductive block is located between the bracket and the second outer insulating plate, a part of the bus is located between the bracket and the second outer insulating plate, and the rest of the bus is exposed from the notch of the first outer insulating plate.

5. The tractor battery according to claim 4, characterized in that: The notch is communicated with the opening.

6. The tractor battery according to claim 1, characterized in that: A first recessed groove and a second recessed groove are recessed on the upper end surface of the fixed cover. A handle is fixed on each of the first recessed groove and the second recessed groove. The handle does not protrude above the end surface of the fixed cover in a folded and stored state.

7. The tractor battery according to claim 5, characterized in that: A lead groove and a wiring groove are recessed on the upper end surface of the fixed cover, the lead groove and the wiring groove are communicated with the second recessed groove, the wiring groove extends to the side wall of the fixed cover, and terminal wires electrically connected to the battery cell group are installed on the lead groove. Part of the terminal wire exposed from the lead groove is routed along the lead groove, the second recessed groove and the wiring groove in sequence.

8. The tractor battery according to claim 6, characterized in that: The terminal wires located in the lead groove, the second sink groove and the wiring groove are not higher than the upper end surface of the fixed cover.

9. The tractor battery according to claim 1, characterized in that: A fixing frame is provided on one side of the shell in the length direction, and the fixing frame includes a welding portion and a fixing leg. The welding portion is welded and fixed to the outer side wall of the shell, and a plurality of fixing legs extend outward in the width direction and the height direction respectively. The fixing leg is provided with a fixing hole at the end beyond the shell.

10. A tractor, characterized in that: A power source is included, wherein the power source is a tractor battery as claimed in any one of claims 1 to 9.

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