Oil-to-electricity lithium battery assembly for commercial vehicle

Abstract

The invention relates to the technical field of lithium batteries, in particular to a commercial vehicle oil-to-electricity lithium battery assembly which comprises a frame, a bearing shell used for bearing a battery is fixedly mounted on the frame, an inclined baffle is arranged on the front side of the bearing shell, and the upper side and the lower side of the baffle are fixedly mounted on the frame and the bearing shell respectively. A plurality of pairs of partition plates are arranged in the bearing shell. According to the lithium battery assembly for converting oil into electricity for the commercial vehicle, the baffles, the vehicle frame and the bearing shell form a triangular structure, higher impact resistance is achieved, the baffles are supported by the supporting blocks, when the baffles are impacted, force borne by the baffles can be transmitted to the vehicle frame and a bottom plate of the bearing shell, a battery in the bearing shell is prevented from being directly impacted, and the service life of the battery assembly is prolonged. And when the impact borne by the baffle is too large, the baffle can deform and crumple, so that the bearing shell and the battery in the bearing shell are buffered, even the frame is supported, and the battery in the bearing shell is protected by supporting the bottom of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery assembly for converting oil to electricity in commercial vehicles. Background Art

[0002] Oil-to-electric conversion is a vehicle model that converts the original fuel engine into an electric vehicle. It mainly uses the fuel vehicle frame to add high-speed motors and batteries, and uses the fuel vehicle frame to build the electric vehicle.

[0003] According to the publication (announcement) number CN116278685A, the publication (announcement) date is 2023-06-23, and a vehicle system for converting a fuel vehicle to an electric vehicle is disclosed, including a fuel vehicle, wherein the fuel vehicle body replaces the internal combustion engine with an electric drive component, replaces the ECU unit of the fuel vehicle with an electronic control unit, and replaces the fuel tank unit of the fuel vehicle with a battery unit, and the fuel vehicle removes the gearbox unit. The system directly replaces the fuel tank, engine control ECU unit, and engine of the fuel vehicle with the three major parts of the electric vehicle, namely, the battery, the electronic control unit, and the motor. It does not require a large amount of research and development costs for the pure electric platform, and reuses the technology and structure of the mechanical platform of the fuel vehicle. It can make up for the research and development time and market gaps in a short time, and provide strong support for the transition to new energy vehicles.

[0004] In the prior art including the above-mentioned patent, since there is no reserved position for the lithium battery assembly in the frame of a fuel vehicle, when using the frame of a fuel vehicle to build an electric vehicle, the lithium battery assembly of the electric vehicle can only be placed in a scattered manner. The lithium battery installed on the chassis of the vehicle can only extend downward in order not to occupy too much space in the passenger compartment, resulting in a protrusion in the chassis of the oil-to-electric vehicle. This part is the location of the lithium battery, which causes the vehicle's passability to deteriorate. At the same time, the lithium battery assembly is more susceptible to scratches, and the frame of an ordinary fuel vehicle is not designed with targeted protection for the battery. As a result, when the vehicle is hit from the side, the frame partially collapses to protect the passenger compartment, and the lithium battery assembly lacks protection and is squeezed or even punctured, causing the battery assembly to catch fire, which is not conducive to the safety of the passengers. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium battery assembly for converting oil to electricity in commercial vehicles, aiming to solve the above problems.

[0006] In order to achieve the above-mentioned objectives, the present invention provides a lithium battery assembly for commercial vehicle oil-to-electric conversion, comprising a frame, a supporting shell for supporting the battery is fixedly mounted on the frame, an inclined baffle is arranged on the front side of the supporting shell, the upper and lower sides of the baffle are respectively fixedly mounted on the frame and the supporting shell, a plurality of pairs of partitions are arranged inside the supporting shell, the plurality of pairs of partitions separate the supporting shell to form a plurality of chambers for accommodating battery packs, support plates are arranged at both ends of any battery in the battery pack, a crushing area facing the battery pack is arranged on the partition, and any pair of the partitions is combined with the supporting shell to form a flow channel parallel to the direction of movement of the vehicle.

[0007] Preferably, a guard plate is provided between the upper and lower support plates on the battery pack close to the outer side of the supporting shell.

[0008] Preferably, the battery pack includes a plurality of first batteries, second batteries and third batteries with support plates installed at both ends, and the battery pack includes the following two states: In a first state, a plurality of first batteries, a plurality of second batteries, and a plurality of third batteries are aligned vertically and horizontally; In the second state, the plurality of first batteries, the plurality of second batteries and the plurality of third batteries are arranged in a tower shape.

[0009] Preferably, a guide plate is provided inside the supporting shell, and a first guide groove, a second guide groove and a third guide groove are provided on the guide plate to match the first battery, the second battery and the third battery in the second state of the battery pack.

[0010] Preferably, the guide plate is provided with a first oblique groove and a second oblique groove for guiding the movement of the second battery and the third battery.

[0011] Preferably, a buffer block extending into the guide plate is provided on the support plate.

[0012] Preferably, the guide plate is formed by splicing a plurality of abutting strip plates.

[0013] Preferably, a heat-resistance plate is provided between two adjacent battery packs, a paper sheet is provided on the heat-resistance plate, and the battery pack state is switched so that the paper sheet is retracted into the heat-resistance plate.

[0014] Preferably, the heat-resisting plate comprises a fixed plate and a movable plate which are arranged in parallel, the movable plate is slidably mounted on the support plate of the third battery, and the paper sheet is fixedly mounted on the fixed plate and extends to the outside of the movable plate.

[0015] Preferably, a sliding plate for sealing the gap thereon is symmetrically slidably arranged on the movable plate.

[0016] In the above technical scheme, the present invention provides a lithium battery assembly for commercial vehicle oil-to-electric conversion, which has the following beneficial effects: the baffle, the frame and the supporting shell form a triangular structure, which has a stronger ability to resist impact, and the support block supports the baffle. When the baffle is hit, the force on the baffle will be transmitted to the frame and the bottom plate of the supporting shell to avoid direct impact on the battery in the supporting shell, and when the impact on the baffle is too large, it can also deform and collapse to buffer the supporting shell and the battery therein, and even lift up the frame to protect the battery in the supporting shell by supporting the bottom of the vehicle; when the vehicle is driving normally , some of the air at the bottom of the vehicle will also enter the flow channel, and the heat generated by the battery during operation can be transferred to the flow channel through the partition and carried away by the air in the flow channel to prevent the battery temperature from being too high; when the vehicle is subjected to a severe side impact, the frame will collapse slightly to cushion the impact and protect the occupants inside the vehicle. At this time, the frame will push the side wall of the supporting shell to squeeze the support plate on the battery. The support plates on the battery pack squeeze each other and transmit the force to the crushed area on the partition. The crushed area is torn by the compression of the battery pack and the support plate. The battery pack can break through the partition and enter the flow channel, protecting the battery while cushioning the impact on the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 A schematic diagram of the internal structure provided by an embodiment of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 A schematic diagram of the structure of a battery pack in a first state provided by an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of point C in the middle; Figure 7 A schematic diagram of the structure of a battery pack in a second state provided by an embodiment of the present invention; Figure 8 for Figure 7 Enlarged view of point D in the middle; Fig. 9 A schematic diagram of the structure of a heat-resistant plate provided in an embodiment of the present invention; Fig.10 A schematic structural diagram of a support plate provided in an embodiment of the present invention.

[0019] Description of reference numerals: 1. Frame; 11. Support shell; 111. Partition; 112. Crushing area; 113. Flow channel; 114. Baffle; 115. Support block; 116. Support plate; 117. Fixed plate; 12. Battery pack; 121. First battery; 122. Second battery; 123. Third battery; 124. First guide block; 125. Second guide block; 126. Third guide block; 127. Support plate; 128. Guard plate; 129. Buffer block; 13. Heat-resistant plate; 131. Movable plate; 132. Slide plate; 133. Paper sheet; 134. First guide groove; 135. Second guide groove; 136. Third guide groove; 137. First inclined groove; 138. Second inclined groove; 139. Guide plate. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-10 As shown, a lithium battery assembly for converting commercial vehicles from oil to electricity includes a frame 1, on which a supporting shell 11 for supporting the battery is fixedly mounted, an inclined baffle 114 is arranged on the front side of the supporting shell 11, and the upper and lower sides of the baffle 114 are respectively fixedly mounted on the frame 1 and the supporting shell 11, a plurality of pairs of partitions 111 are arranged inside the supporting shell 11, and the plurality of pairs of partitions 111 separate the supporting shell 11 to form a plurality of chambers for accommodating battery packs 12, support plates 127 are arranged at both ends of any battery in the battery pack 12, a crushing area 112 facing the battery pack 12 is arranged on the partition 111, and any pair of partitions 111 is combined with the supporting shell 11 to form a flow channel 113 parallel to the moving direction of the vehicle.

[0022] Specifically, a support block 115 for supporting the baffle 114 is provided on the vehicle frame 1 .

[0023] In the above technical solution, the baffle 114, the frame 1 and the supporting shell 11 form a triangular structure, which has a stronger ability to resist impact, and the support block 115 supports the baffle 114. When the baffle 114 is hit, the force applied to the baffle 114 will be transmitted to the frame 1 and the bottom plate of the supporting shell 11 to prevent the battery in the supporting shell 11 from being directly impacted. When the impact on the baffle 114 is too large, it can also deform and collapse to buffer the supporting shell 11 and the battery therein, and even lift up the frame 1 to protect the battery in the supporting shell 11 by supporting the bottom of the vehicle. When the vehicle is driving normally, part of the air at the bottom of the vehicle will also enter the flow channel 113, and the battery will be The heat generated during operation can be transferred to the flow channel 113 through the partition 111 and carried away by the air in the flow channel 113 to prevent the battery temperature from being too high. When the vehicle is subjected to a severe side impact, the frame 1 will collapse slightly to cushion the impact and protect the occupants inside the vehicle. At this time, the frame 1 will push against the side wall of the supporting shell 11 to squeeze the support plate 127 on the battery. The support plates 127 on the battery pack 12 squeeze each other and transmit the force to the crushing area 112 on the partition 111. The crushing area 112 is torn by the compression of the battery pack 12 and the support plate 127. The battery pack 12 can break through the partition 111 and enter the flow channel 113, protecting the battery while cushioning the impact on the vehicle.

[0024] As a further embodiment of the present invention, a protective plate 128 is provided between the upper and lower support plates 127 on the battery pack 12 close to the outer side of the supporting shell 11 .

[0025] Specifically, during the process of the side wall of the supporting shell 11 moving toward the inside of the supporting shell 11, it will first contact the guard plate 128 on the support plate 127. The guard plate 128 protects the adjacent batteries to prevent the side wall of the supporting shell 11 from tearing during the shrinkage process and puncturing the batteries. The guard plate 128 can push the two support plates 127 on the battery to move synchronously, thereby pushing the entire battery pack 12 to move, to prevent the battery from tilting due to uneven force on its upper and lower support plates 127.

[0026] As another embodiment further provided by the present invention, the battery pack 12 includes a plurality of first batteries 121, a second battery 122 and a third battery 123 with support plates 127 installed at both ends, and the battery pack 12 includes the following two states: In the first state, the plurality of first batteries 121, the plurality of second batteries 122 and the plurality of third batteries 123 are aligned vertically and horizontally; In the second state, the plurality of first batteries 121 , the plurality of second batteries 122 , and the plurality of third batteries 123 are arranged in a tower shape.

[0027] Specifically, when the vehicle is operating normally, the battery pack 12 on the vehicle is in the first state, and there is a certain gap between the multiple batteries to avoid heat accumulation caused by battery squeezing. When the vehicle is hit, the battery pack 12 switches to the second state, and the support plates 127 on the multiple batteries are pressed together (such as Figure 7 As shown), the ability of the battery pack 12 to resist side collisions can be improved, thereby better protecting the battery.

[0028] Furthermore, in the above embodiment, bumps and grooves can be provided on the support plate 127. When the battery pack 12 is switched to the second state, adjacent support plates 127 are connected together through the bumps and grooves, thereby further improving the ability of the battery pack 12 to resist collision and thus better protecting the battery.

[0029] As another embodiment further provided by the present invention, a guide plate 139 is provided inside the supporting shell 11, and the guide plate 139 is provided with a first guide groove 134, a second guide groove 135 and a third guide groove 136 adapted to the first battery 121, the second battery 122 and the third battery 123 in the second state of the battery pack 12.

[0030] Specifically, the support plate 127 on the first battery 121 is provided with a first guide block 124 adapted to the first guide groove 134 shown, the support plate 127 on the second battery 122 is provided with a second guide block 125 adapted to the second guide groove 135 shown, and the support plate 127 on the third battery 123 is provided with a third guide block 126 adapted to the third guide groove 136 shown. The first guide groove 134, the second guide groove 135 and the third guide groove 136 pass through multiple chambers separated by the partition 111, and the crushing area 112 on the partition 111 seals the connection between the guide groove and the flow channel 113.

[0031] Furthermore, when the battery pack 12 switches to the second state, the second guide block 125 is embedded in the second guide groove 135, and the third guide block 126 is embedded in the third guide groove 136. The side wall of the supporting shell 11 pushes the guard plate 128, and the multiple guard plates 128 drive the multiple support plates 127 to move, thereby pushing the first guide block 124 on the first battery 121 to move along the first guide groove 134, the second guide block 125 on the second battery 122 to move along the second guide groove 135, and the third guide block 126 on the third battery 123 to move along the third guide groove 136, so that the battery pack 12 squeezes the crushing area 112 until the crushing area 112 ruptures, and the battery pack 12 enters the flow channel 113 to buffer the collision suffered by the vehicle.

[0032] As another embodiment further provided by the present invention, the guide plate 139 is provided with a first inclined groove 137 and a second inclined groove 138 for guiding the movement of the second battery 122 and the third battery 123 .

[0033] Specifically, the second end of the first inclined groove 137 is connected to the second guide groove 135, and the second guide block 125 is provided with a slope adapted to the first inclined groove 137. The second end of the second inclined groove 138 is connected to the third guide groove 136, and the third guide block 126 is provided with a slope adapted to the second inclined groove 138.

[0034] Furthermore, when the battery pack 12 is in the first state, the second guide block 125 on the second battery 122 is located at the first end of the first inclined groove 137, and the third guide block 126 on the third battery 123 is located at the first end of the second inclined groove 138. When the battery pack 12 switches from the first state to the second state, the second guide block 125 on the second battery 122 enters the second guide groove 135 along the first inclined groove 137, and the third guide block 126 on the third battery 123 enters the third guide groove 136 along the second inclined groove 138, so that the battery pack 12 moves as a whole.

[0035] As another embodiment further provided by the present invention, a buffer block 129 extending into the guide plate 139 is disposed on the support plate 127 .

[0036] Specifically, during normal operation, the buffer block 129 fixes the support plate 127 in the supporting shell 11, thereby fixing the battery to prevent the battery from vibrating during the operation of the vehicle. When the vehicle is subjected to a severe lateral impact, the frame 1 will collapse slightly to buffer the impact and protect the occupants inside the vehicle. At this time, the frame 1 will push against the side wall of the supporting shell 11 to squeeze the support plate 127 on the battery. The buffer block 129 on the support plate 127 buffers the impact by breaking, and then the battery pack 12 switches from the second state to the second state, and the battery pack 12 moves as a whole to further buffer the impact on the vehicle.

[0037] As another embodiment further provided by the present invention, the guide plate 139 is specifically formed by splicing a plurality of abutting strip plates.

[0038] Specifically, when the battery moves, the guide plate 139 lacks support and deforms. The guide plate 139 formed by multiple strip plates will deform one by one, and the shape of the guide groove on the entire guide plate 139 will not be affected by the impact of the outermost part, thereby facilitating the movement of the battery pack 12 along the guide groove on the guide plate 139.

[0039] As another embodiment further provided by the present invention, a heat-resisting plate 13 is provided between two adjacent battery packs 12 , a paper sheet 133 is provided on the heat-resisting plate 13 , and the battery pack 12 is switched to retract the paper sheet 133 into the heat-resisting plate 13 .

[0040] Specifically, when the battery pack 12 is in the first state and working normally, the paper piece 133 on the heat insulation board can block the heat transfer between two adjacent battery packs 12, thereby protecting the normal operation of multiple battery packs 12; when the vehicle is hit and the battery pack 12 switches from the first state to the second state, the paper piece 133 shrinks to the inside of the heat insulation board 13, thereby preventing some batteries from being punctured and catching fire and spreading to other battery packs 12 through the paper piece 133.

[0041] As another embodiment further provided by the present invention, the heat-resistant plate 13 includes a fixed plate 117 and a movable plate 131 distributed in parallel. The movable plate 131 is slidably installed on the support plate 127 of the third battery 123, and the paper sheet 133 is fixedly installed on the fixed plate 117 and extends to the outside of the movable plate 131.

[0042] Specifically, a notch is provided on the movable plate 131 for the paper sheet 133 to extend out, and a paper sheet 133 is also provided on the side wall of the fixed plate away from the movable plate 131 .

[0043] Furthermore, when the battery pack 12 switches from the first state to the second state, the support plate 127 on the third battery 123 drives the movable plate 131 to move away from the fixed plate 117, and the distance between the fixed plate 117 and the movable plate 131 increases. The paper piece 133 on the fixed plate 117 extending to the outside of the movable plate 131 is pulled and retracted between the movable plate 131 and the fixed plate 117, thereby preventing some batteries from being punctured and catching fire and spreading to other battery packs 12 through the paper piece 133.

[0044] As another embodiment further provided by the present invention, a slide plate 132 is symmetrically slidably provided on the movable plate 131 for sealing the gap thereon.

[0045] Specifically, a spring is arranged between the slide plate 132 and the movable plate 131, and the partition plate 111 is specifically two pairs. The two pairs of partition plates 111 divide the supporting shell 11 into three chambers for storing the battery packs 12 and two flow channels 113 for air flow to pass through. A hard support plate 116 is arranged in the middle of the middle chamber, and the support plate 116 divides the battery pack 12 into two left and right parts to avoid mutual influence between the left and right parts.

[0046] Furthermore, the baffle 114, the frame 1 and the supporting shell 11 form a triangular structure, which has a stronger ability to resist impact, and the support block 115 supports the baffle 114. When the baffle 114 is hit, the force applied to the baffle 114 will be transmitted to the frame 1 and the bottom plate of the supporting shell 11 to prevent the battery in the supporting shell 11 from being directly impacted. When the impact on the baffle 114 is too large, it can also deform and collapse to buffer the supporting shell 11 and the battery therein, and even lift up the frame 1, thereby protecting the supporting shell 11 by supporting the bottom of the vehicle. When the vehicle is running normally, the buffer block 129 fixes the support plate 127 in the supporting shell 11, thereby fixing the battery to prevent the battery from vibrating during the operation of the vehicle. Some air at the bottom of the vehicle will also enter the flow channel 113. The heat generated by the battery during operation can be transferred to the flow channel 113 through the partition 111 and carried away by the air in the flow channel 113 to prevent the battery temperature from being too high. The paper sheet 133 on the insulation board can block the heat transfer between two adjacent battery packs 12, thereby protecting the normal operation of multiple battery packs 12.

[0047] When the vehicle is hit violently from the side, the frame 1 will collapse slightly to cushion the impact and protect the occupants inside the vehicle. At this time, the frame 1 will push the side wall of the supporting shell 11 to collapse, and the side wall of the supporting shell 11 will contact the guard plate 128 on the support plate 127. The guard plate 128 protects the adjacent batteries to prevent the side wall of the supporting shell 11 from tearing during the collapse and puncturing the batteries. The guard plate 128 can push the two supporting plates 127 on the battery to move synchronously. The buffer block 129 on the supporting plate 127 cushions the impact by breaking. The supporting plate 127 moves with the battery. The second guide block 125 on the second battery 122 enters the second guide groove 135 along the first inclined groove 137, and the third guide block 126 on the third battery 123 enters the third guide groove 136 along the second inclined groove 138. The battery pack 12 switches from the first state to the second state, and the movable plate 131 moves along the third inclined groove 138. The support plate 127 on the battery 123 moves away from the fixed plate 117, and the distance between the fixed plate 117 and the movable plate 131 increases. The paper piece 133 on the fixed plate 117 extending to the outside of the movable plate 131 is pulled and retracted between the movable plate 131 and the fixed plate 117. The slide plate 132 moves under the action of the spring to seal the gap on the movable plate 131 to prevent some batteries from puncturing and catching fire and spreading to other battery packs 12 through the paper piece 133. The side wall of the supporting shell 11 continues to collapse and pushes the battery pack 12 to continue to move along the guide groove. The support plates 127 on the battery pack 12 squeeze each other and transmit the force to the crushing area 112 on the partition 111. The crushing area 112 is torn by the squeezing of the battery pack 12 and the support plate 127. The battery pack 12 can break through the partition 111 and enter the flow channel 113, thereby protecting the battery and buffering the impact on the vehicle.

[0048] When the side impact on the vehicle is too large, the battery pack 12 moved into the channel can continue to break through the crush area 112 on the partition 111, thereby pushing the battery pack 12 in the middle chamber to switch from the first state to the second state, thereby further cushioning the impact on the vehicle and protecting the occupants inside the passenger compartment.

[0049] Furthermore, the materials of the crushing area and the buffer block in the above embodiments are all tin alloy or aluminum alloy that is easy to break.

[0050] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lithium battery assembly for converting oil to electricity in a commercial vehicle, comprising a vehicle frame (1), characterized in that: A supporting shell (11) for supporting a battery is fixedly mounted on the vehicle frame (1), an inclined baffle (114) is arranged on the front side of the supporting shell (11), and the upper and lower sides of the baffle (114) are respectively fixedly mounted on the vehicle frame (1) and the supporting shell (11), a plurality of pairs of partitions (111) are arranged inside the supporting shell (11), and the plurality of pairs of partitions (111) separate the supporting shell (11) to form a plurality of chambers for accommodating a battery pack (12), support plates (127) are arranged at both ends of any battery in the battery pack (12), a crushing area (112) facing the battery pack (12) is arranged on the partition (111), and any pair of partitions (111) is combined with the supporting shell (11) to form a flow channel (113) parallel to the moving direction of the vehicle.

2. A lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 1, characterized in that: A protective plate (128) is provided between the upper and lower support plates (127) on the battery pack (12) close to the outside of the supporting shell (11).

3. The lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 1, characterized in that: The battery pack (12) comprises a plurality of first batteries (121), second batteries (122) and third batteries (123) with support plates (127) mounted at both ends. The battery pack (12) comprises the following two states: In a first state, a plurality of first batteries (121), a plurality of second batteries (122), and a plurality of third batteries (123) are aligned vertically and horizontally; In the second state, the plurality of first batteries (121), the plurality of second batteries (122), and the plurality of third batteries (123) are arranged in a tower shape.

4. The lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 3, characterized in that: A guide plate (139) is provided inside the supporting shell (11), and a first guide groove (134), a second guide groove (135), and a third guide groove (136) are provided on the guide plate (139) for matching with the first battery (121), the second battery (122), and the third battery (123) of the battery pack (12) in the second state.

5. The lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 4, characterized in that: The guide plate (139) is provided with a first inclined groove (137) and a second inclined groove (138) for guiding the movement of the second battery (122) and the third battery (123).

6. The lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 4, characterized in that: The support plate (127) is provided with a buffer block (129) extending into the guide plate (139).

7. The lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 4, characterized in that: The guide plate (139) is specifically formed by splicing a plurality of abutting strip plates.

8. The lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 3, characterized in that: A heat-resistance plate (13) is provided between two adjacent battery packs (12), a paper sheet (133) is provided on the heat-resistance plate (13), and the state of the battery pack (12) is switched so that the paper sheet (133) is retracted into the heat-resistance plate (13).

9. The lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 8, characterized in that: The heat-resisting plate (13) comprises a fixed plate (117) and a movable plate (131) which are arranged in parallel, the movable plate (131) being slidably mounted on a support plate (127) of the third battery (123), and the paper sheet (133) being fixedly mounted on the fixed plate (117) and extending to the outside of the movable plate (131).

10. A lithium battery assembly for converting oil to electricity for commercial vehicles according to claim 9, characterized in that: A sliding plate (132) for sealing the gap thereon is symmetrically slidably arranged on the movable plate (131).

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