Battery system and commercial vehicle

Abstract

The embodiment of the application provides a battery system and a commercial vehicle, and relates to the technical field of the commercial vehicle. The battery system comprises a support frame, a battery management unit, a first battery pack and at least one second battery pack. By integrating the slide rail, the electrical interface, the battery management unit and the fixed first battery pack on the support frame, and enabling the second battery pack to be moved to the mounting position along the slide rail and then to be connected to the electrical interface, the battery system can be modularly expanded on the basis of the fixed capacity of the first battery pack, and the assembly, disassembly and maintenance processes of the second battery pack remain relatively independent, so that the expansion and reduction processes of the battery system are convenient to operate. When the battery capacity needs to be increased, the second battery pack is moved to the corresponding mounting position along the slide rail, the plug-in connector is accurately aligned with the electrical interface and is connected, and then the battery management unit samples, balances and controls the second battery pack connected, and the multiple battery packs jointly output electric energy to the vehicle load.

Description

Technical Field

[0001] This application relates to the field of commercial vehicle technology, and more particularly to a battery system and a commercial vehicle. Background Technology

[0002] With the diversification of application scenarios for new energy commercial vehicles (such as tractor vehicles or engineering vehicles) (such as port short-haul transportation, intercity short-haul transportation, long-distance trunk logistics, etc.), the requirements for the driving range and battery capacity of commercial vehicles vary greatly in different operating scenarios.

[0003] In related technologies, commercial vehicles use a standardized configuration of fixed-capacity battery packs. The total battery capacity and driving range are locked when the commercial vehicle leaves the factory. For short-haul transportation in ports and factory areas, where the daily mileage is short and charging frequency is sufficient, large-capacity batteries would significantly increase the vehicle's weight, raise the purchase cost, and reduce the effective payload. However, for long-haul logistics scenarios, vehicles are required to travel continuously over long distances, and small-capacity batteries cannot meet the range requirements. Frequent charging would significantly reduce operational efficiency. Utility Model Content

[0004] This application provides a battery system and a commercial vehicle to meet the range requirements of commercial vehicles in different operating scenarios.

[0005] In a first aspect, the battery system provided in the embodiments of this application includes:

[0006] A support frame is provided with a slide rail and at least one electrical interface. The slide rail is provided with at least one mounting position, and the electrical interface is provided corresponding to the mounting position. The support frame is used to be installed on the frame of a commercial vehicle.

[0007] The battery management unit is mounted on a support frame and is electrically connected to an electrical interface.

[0008] The first battery pack is mounted on the support frame and is electrically connected to the battery management unit.

[0009] At least one second battery pack is slidably mounted on a slide rail. When the second battery pack is slid to the mounting position, the connector of the second battery pack is plugged into the electrical interface, and the second battery pack is detachably connected to the slide rail.

[0010] In one possible implementation, the battery system provided in this application embodiment has a first positioning member on the second battery pack and a second positioning member on the slide rail, with the second positioning member located within the mounting position.

[0011] When the second battery pack slides to the mounting position, the first positioning member engages with the second positioning member.

[0012] In one possible implementation, the battery system provided in this application embodiment includes a first positioning member comprising a snap-fit ​​portion and an elastic portion, a second battery pack having an installation groove, the snap-fit ​​portion being slidably disposed in the installation groove, and the two ends of the elastic portion being connected to the snap-fit ​​portion and the first installation groove respectively.

[0013] The second positioning element is a snap-fit ​​groove, and the elastic part is configured such that when the mounting groove and the snap-fit ​​groove are in communication, the driving snap-fit ​​part extends out of the mounting groove and snaps into the snap-fit ​​groove.

[0014] In one possible implementation, the battery system provided in this application embodiment further includes a locking connector, a connecting part is provided on the second battery pack, a through hole is provided on the connecting part, a connecting hole is provided on the slide rail, and the connecting hole is located in the mounting position;

[0015] When the through hole and the connecting hole are connected, the locking connector is connected through the through hole and the connecting hole to restrict the continued movement of the second battery pack.

[0016] In one possible implementation, the battery system provided in this application embodiment includes a slide rail base and a slide rail portion disposed on the slide rail base. The slide rail base is disposed on a support frame, and the second battery pack is slidably disposed on the slide rail portion. A limiting protrusion is provided on the slide rail base. The limiting protrusion is located on at least one side of the slide rail portion, and the extending direction of the limiting protrusion is parallel to the extending direction of the slide rail portion.

[0017] And / or, at least one end of the slide rail is provided with a limit stop.

[0018] In one possible implementation, the battery system provided in this application embodiment has a first shock absorber between the slide rail base and the support frame;

[0019] And / or, a reinforcing part is provided on the slide rail base.

[0020] In one possible implementation, the battery system provided in this application embodiment has a second shock absorber disposed between the first battery pack and the support frame.

[0021] In one possible implementation, the battery system provided in this application embodiment has multiple mounting positions, which are spaced apart along the length of the slide rail.

[0022] In one possible implementation, the battery system provided in this application embodiment has a support frame whose length direction is used to extend along the driving direction of the commercial vehicle, and the extension direction of the slide rail is parallel to the length direction of the support frame.

[0023] Alternatively, the extension direction of the slide rail intersects with the length direction of the support frame.

[0024] Secondly, the commercial vehicle provided in the embodiments of this application includes a commercial vehicle body and any of the above-mentioned battery systems disposed on the commercial vehicle body.

[0025] This application provides a battery system and a commercial vehicle. The battery system includes a support frame, a battery management unit, a first battery pack, and at least one second battery pack. By integrating a slide rail, an electrical interface, the battery management unit, and a fixedly mounted first battery pack on the support frame, and enabling the second battery pack to move along the slide rail to a mounting position for plug-in and detachable connection with the electrical interface, the battery system can be modularly expanded based on the fixed capacity of the first battery pack. Furthermore, the assembly, disassembly, and maintenance processes of the second battery pack remain relatively independent, making the expansion and reduction of the battery system's capacity convenient.

[0026] When it is necessary to increase the battery capacity according to the vehicle's operating conditions and range requirements, the second battery pack is moved along the slide rail to the corresponding installation position under the action of external force, so that its connectors are accurately aligned with the electrical interface and connected. Then, the battery management unit samples, balances and controls the connected second battery pack, and multiple battery packs work together to output electrical energy to the vehicle load. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of the structure of a commercial vehicle provided in the first embodiment of this application;

[0029] Figure 2 This is a structural schematic diagram of a commercial vehicle provided in the second embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the battery system provided in an embodiment of this application;

[0031] Figure 4 This is a partial structural schematic diagram of the battery system provided in an embodiment of this application;

[0032] Figure 5 for Figure 4 A schematic diagram of the structure of the second battery pack and the slide rail;

[0033] Figure 6 This is a structural schematic diagram of the second battery pack, slide rail, and support frame provided in an embodiment of this application;

[0034] Figure 7 for Figure 6 Enlarged view of the area indicated by A in the middle;

[0035] Figure 8This is a schematic diagram of the structure of the second battery pack provided in an embodiment of this application;

[0036] Figure 9 This is a schematic diagram of the structure of the first battery pack and the second shock absorber provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10. Battery system; 20. Commercial vehicle body;

[0039] 100. Support frame; 110. Slide rail; 111. Mounting position; 112. Second positioning component; 113. Connecting hole; 114. Reinforcing part; 115. Slide rail base; 116. Slide rail part; 120. Electrical interface; 130. Limiting protrusion; 140. Limiting block; 150. First shock absorber; 160. Second shock absorber; 161. Base part; 162. Shock absorber part;

[0040] 200. Battery Management Unit;

[0041] 300, First Battery Pack;

[0042] 400, Second battery pack; 410, Connector; 420, First positioning member; 421, Snap-fit ​​part; 422, Elastic part; 430, Mounting groove; 440, Connecting part; 441, Through hole;

[0043] 500. Locking connector.

[0044] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0046] The terms “first,” “second,” “third,” and “fourth,” etc., as used in this application description (if applicable), are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0047] As mentioned in the background section, with the diversification of application scenarios for new energy commercial vehicles (such as tractor vehicles or engineering vehicles) (such as port short-haul transportation, intercity short-haul transportation, long-distance trunk logistics, etc.), the requirements for the driving range and battery capacity of commercial vehicles vary greatly in different operating scenarios.

[0048] In related technologies, commercial vehicles use a standardized configuration of fixed-capacity battery packs. The total battery capacity and driving range are locked when the commercial vehicle leaves the factory. For short-haul transportation in ports and factory areas, where the daily mileage is short and charging frequency is sufficient, large-capacity batteries would significantly increase the vehicle's weight, raise the purchase cost, and reduce the effective payload. However, for long-haul logistics scenarios, vehicles are required to travel continuously over long distances, and small-capacity batteries cannot meet the range requirements. Frequent charging would significantly reduce operational efficiency.

[0049] To address the aforementioned problems in the existing technology, this utility model provides a battery system and a commercial vehicle. The battery system includes a support frame, a battery management unit, a first battery pack, and at least one second battery pack. By integrating a slide rail, an electrical interface, the battery management unit, and the fixedly mounted first battery pack on the support frame, and enabling the second battery pack to move along the slide rail to its mounting position for plug-in and detachable connection with the electrical interface, the battery system can be modularly expanded based on the fixed capacity of the first battery pack. Furthermore, the assembly, disassembly, and maintenance processes of the second battery pack remain relatively independent, making the expansion and reduction of the battery system's capacity convenient.

[0050] When it is necessary to increase the battery capacity according to the vehicle's operating conditions and range requirements, the second battery pack is moved along the slide rail to the corresponding installation position under the action of external force, so that its connectors are accurately aligned with the electrical interface and connected. Then, the battery management unit samples, balances and controls the connected second battery pack, and multiple battery packs work together to output electrical energy to the vehicle load.

[0051] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0052] Reference Figures 1 to 9 As shown, the battery system 10 provided in this application embodiment includes a support frame 100, a battery management unit 200, a first battery pack 300, and at least one second battery pack 400.

[0053] The support frame 100 is provided with a slide rail 110 and at least one electrical interface 120. The slide rail 110 has at least one mounting position 111, and the electrical interface 120 corresponds to the mounting position 111. The support frame 100 is used for mounting onto the frame of a commercial vehicle. A battery management unit 200 is mounted on the support frame 100 and electrically connected to the electrical interface 120. A first battery pack 300 is mounted on the support frame 100 and electrically connected to the battery management unit 200. A second battery pack 400 is slidably mounted on the slide rail 110. When the second battery pack 400 slides to the mounting position 111, the connector 410 of the second battery pack 400 engages with the electrical interface 120, and the second battery pack 400 is detachably connected to the slide rail 110.

[0054] The support frame 100 supports the slide rail 110, electrical interface 120, battery management unit 200, first battery pack 300, and second battery pack 400, thus providing an installation base for the entire battery system 10 and a connection interface with the commercial vehicle frame. The support frame 100 is fixedly installed on the commercial vehicle frame and can be assembled via bolt connection, welding connection, or locking clamp connection. The support can be a long strip, a rectangular frame, or a tray-type structure with reinforcing ribs, etc.

[0055] The battery management unit 200 is a control device used for monitoring, controlling, balancing, and managing communication of the battery system 10. It manages the voltage, current, temperature, and status of the first battery pack 300 and the second battery pack 400 connected via the electrical interface 120, and coordinates the operating states of the first battery pack 300 and the second battery pack 400. The battery management unit 200 can utilize existing conventional technologies, including sampling boards, main control boards, and relay controllers.

[0056] The first battery pack 300 is a power storage unit mounted on the chassis of the commercial vehicle, used to output electrical energy to the vehicle as part of the vehicle's basic power supply capacity. This first battery pack 300 can be arranged in the chassis space directly below the cab and fixedly fitted to the chassis to utilize the available installation space below the cab. Compared to related technologies where battery packs are concentrated on the chassis behind the cab, this arrangement lowers the center of gravity of the commercial vehicle, resulting in higher stability during high-speed lane changes and large lateral acceleration scenarios.

[0057] At least one second battery pack 400 refers to an additional energy storage module that, together with the first battery pack 300, constitutes a vehicle power capacity expansion unit. It is used to increase the available power of the commercial vehicle as needed, based on the first battery pack 300. The second battery pack 400 is slidably mounted on the slide rail 110 of the support frame 100. When slid to the mounting position 111, its connector 410 is plugged into the electrical interface 120 and detachably connected to the slide rail 110, thereby achieving capacity expansion without changing the main structure of the support frame 100. The bottom of the housing of the second battery pack 400 may be provided with guide wheels, sliders, or guide rail mating parts adapted to the slide rail 110.

[0058] Preferably, the slide rail 110 can be a double parallel rail structure to ensure the stability of the movement of the second battery pack 400.

[0059] In this way, by integrating the slide rail 110, electrical interface 120, battery management unit 200, and fixedly installed first battery pack 300 on the support frame 100, and enabling the second battery pack 400 to move along the slide rail 110 to the mounting position 111 and complete the plug-in and detachable connection with the electrical interface 120, the battery system 10 can be modularly expanded based on the fixed capacity of the first battery pack 300. Furthermore, the assembly, disassembly, and maintenance processes of the second battery pack 400 remain relatively independent, making the expansion and reduction processes of the battery system 10 convenient.

[0060] When it is necessary to increase the battery capacity according to the vehicle's operating conditions and range requirements, the second battery pack 400 is moved along the slide rail 110 to the corresponding mounting position 111 under the action of external force, so that its connector 410 is accurately aligned with the electrical interface 120 and the connection is completed. Then, the battery management unit 200 samples, balances and controls the connected second battery pack 400, and multiple battery packs work together to output electrical energy to the vehicle load.

[0061] When a reduction in capacity is required, the connector 410 of the second battery pack 400 can be disconnected, and the second battery pack 400 can be removed from the mounting position 111 along the slide rail 110 and detached separately from the support frame 100.

[0062] Reference Figure 6 and Figure 7As shown, in some embodiments, a first positioning member 420 is provided on the second battery pack 400, and a second positioning member 112 is provided on the slide rail 110. The second positioning member 112 is located in the mounting position 111. When the second battery pack 400 slides to the mounting position 111, the first positioning member 420 and the second positioning member 112 engage.

[0063] In the above embodiment, when the second battery pack 400 slides on the slide rail 110 to the mounting position 111, the first positioning member 420 and the second positioning member 112 are engaged accordingly, so that the second battery pack 400 can maintain a predetermined posture after it is in place, thereby ensuring that the contact pressure between the plug 410 and the electrical interface 120 is stable, reducing the increase in contact resistance, momentary intermittent power supply or plug wear caused by loosening.

[0064] Furthermore, the snap-fit ​​structure between the first positioning member 420 and the second positioning member 112 facilitates the reverse exit by unlocking when disassembly is required, thereby enabling the quick replacement of the second battery pack 400 without affecting the main structure of the slide rail 110.

[0065] For example, the first positioning member 420 can be an elastic buckle, a spring-loaded positioning head, a boss-type claw, or a spring-loaded latch, etc., and the second positioning member 112 can be an elastic buckle, a spring-loaded positioning head, a boss-type claw, or a spring-loaded latch, etc., that are adapted to it.

[0066] Reference Figure 6 and Figure 7 As shown, in some embodiments, the first positioning member 420 includes a snap-fit ​​portion 421 and an elastic portion 422. The second battery pack 400 is provided with a mounting groove 430. The snap-fit ​​portion 421 is slidably disposed in the mounting groove 430. The two ends of the elastic portion 422 are respectively connected to the snap-fit ​​portion 421 and the first mounting groove 430.

[0067] The second positioning member 112 is a snap-fit ​​groove, and the elastic part 422 is configured such that when the mounting groove 430 and the snap-fit ​​groove are in communication, the snap-fit ​​part 421 is driven to extend out of the mounting groove 430 and snap-fit ​​with the snap-fit ​​groove.

[0068] In the above embodiment, when the second battery pack 400 slides on the slide rail 110 to the mounting position 111, the snap-fit ​​part 421 moves outward from the mounting groove 430 and through the groove opening under the continuous action of the elastic part 422 until it extends into the snap-fit ​​groove to form a snap-fit.

[0069] Since the snap-fit ​​action is automatically completed by the restoring force of the elastic part 422, the user does not need to apply an additional continuous holding force. Furthermore, when the parts are slightly displaced due to bumps, vibrations, or temperature changes during commercial vehicle operation, the snap-fit ​​part 421 can still maintain its engagement with the snap-fit ​​groove and is not easily disengaged due to external disturbances.

[0070] Furthermore, during the sliding phase of the second battery pack 400 along the slide rail 110, the locking part 421 is squeezed and compressed by the side wall of the slide rail 110 and stored and hidden in the mounting groove 430 to ensure the smooth movement of the second battery pack 400.

[0071] For example, the latching part 421 can be made into a hook-shaped latch, a wedge-shaped protrusion, a columnar tongue, or an elastic buckle with a beveled guide end, etc. The elastic part 422 can be a torsion spring, a compression spring, a leaf spring, a rubber elastic sheet, or an elastic metal corrugated sheet, etc.

[0072] Reference Figure 5 , Figure 6 and Figure 8 As shown, in some embodiments, the battery system 10 provided in this application further includes a locking connector 500. The second battery pack 400 is provided with a connecting portion 440, which has a through hole 441. The slide rail 110 is provided with a connecting hole 113, which is located within the mounting position 111. When the through hole 441 and the connecting hole 113 are in communication, the locking connector 500 connects to the connecting hole 113 via the through hole 441 to restrict further movement of the second battery pack 400.

[0073] In the above embodiment, when the second battery pack 400 slides onto the mounting position 111, the through hole 441 and the connecting hole 113 are connected. At this time, the locking connector 500 can be inserted along the axis of the hole, so that it passes through the through hole 441 and the connecting hole 113 at the same time, thereby forming a second fixing constraint in addition to the first positioning member 420 and the second positioning member 112. This reduces the micro-momentum of the second battery pack 400 under vehicle driving, braking, acceleration and road impact conditions, thereby reducing the risk of loosening of the connector 410 of the second battery pack 400 due to repeated vibration and improving the connection stability of the entire battery system 10.

[0074] For example, the locking connector 500 can be a bolt, pin, or other structure, and the connecting hole 113 can be a threaded hole, insertion hole, or other structure that is compatible with it.

[0075] Preferably, the second battery pack 400 is provided with multiple connecting parts 440 at intervals around its periphery, providing circumferential and multi-point support for more balanced installation constraints.

[0076] Reference Figures 3 to 7 As shown, in some embodiments, the slide rail 110 includes a slide rail base 115 and a slide rail portion 116 disposed on the slide rail base 115. The slide rail base 115 is disposed on the support frame 100, and the second battery pack 400 is slidably disposed on the slide rail portion 116. A limiting protrusion 130 is provided on the slide rail base 115. The limiting protrusion 130 is located on at least one side of the slide rail portion 116, and the extending direction of the limiting protrusion 130 is parallel to the extending direction of the slide rail portion 116.

[0077] In the above embodiment, the limiting protrusion 130 is located in the side area of ​​the slide rail portion 116. During the process of the second battery pack 400 moving in and out of the mounting position 111 along the slide rail portion 116, the lateral posture and movement boundary of the second battery pack 400 are constrained, thereby suppressing lateral deviation, swinging or derailment during sliding.

[0078] Preferably, limiting protrusions 130 are provided on both sides of the slide rail portion 116, and their extension direction is parallel to the extension direction of the slide rail portion 116, so that the limiting protrusions 130 can form a continuous guide boundary along the sliding path, and together with the slide rail portion 116, define the travel channel of the second battery pack 400.

[0079] The limiting protrusion 130 can be configured as a continuous structure or as several segmented structures along the extension direction of the slide rail portion 116. This application embodiment does not impose too many restrictions on this.

[0080] Reference Figure 5 and Figure 7 As shown, the connecting hole 113 is provided on the slide rail base 115, and the locking connector 500 is connected to the connecting hole 113 through the through hole 441 to lock and fix the second battery pack 400 to the slide rail base 115. The second positioning part (i.e., the snap-fit ​​groove) is provided on the side wall of the slide rail part 116.

[0081] Reference Figure 5 As shown, in some embodiments, at least one end of the slide rail 116 is provided with a limit stop 140.

[0082] In the above embodiment, the limiting block 140 is provided at the end of the slide rail 116 to limit the extreme displacement of the second battery pack 400 in the length direction of the slide rail 116, and to prevent the second battery pack 400 from continuing to move beyond its travel and detaching from the slide rail 116 under assembly, disassembly or abnormal impact conditions.

[0083] Preferably, the limiting block 140 can be an elastic stop block. When the second battery pack 400 is pushed into the slide rail 110, it has a traveling inertia. The elastic stop block can absorb the impact kinetic energy, avoid the second battery pack 400 from hard collision and generate impact stress, and prevent the second battery pack 400 from being bumped and deformed.

[0084] Preferably, limit stops 140 are provided at both opposite ends of the slide rail 116.

[0085] Reference Figure 6 and Figure 7 As shown, in some embodiments, a first shock absorber 150 is provided between the slide rail base 115 and the support frame 100.

[0086] In the above embodiment, the shock absorber is an elastic buffer component disposed between the slide rail base 115 and the support frame 100. It is used to absorb and attenuate the vibration transmitted to the support frame 100 by uneven road surface, frame torsion and loading and unloading impact during the slide rail 110 carrying the second battery pack 400 and during vehicle operation, thereby reducing the impact load and fatigue damage at the connection part 440 between the slide rail 110 and the support frame 100, and thus protecting the second battery pack 400.

[0087] For example, the first damping component 150 can be a rubber pad, a polyurethane buffer block, a silicone vibration isolation pad, or a spring damper, etc.

[0088] Reference Figure 5 As shown, in some embodiments, a reinforcing part 114 is provided on the slide rail base 115.

[0089] In the above embodiments, the reinforcement 114 can improve the overall stiffness and deformation resistance of the slide rail 110 when bearing the weight of the second battery pack 400, the repetitive loads generated by frequent pushing and pulling, and the impact loads of vehicle operation.

[0090] The reinforcement 114 improves the overall structural rigidity of the slide rail 110, so the second battery pack 400 can maintain a relatively stable support state during installation, operation and disassembly.

[0091] For example, the reinforcing part 114 can be a thickened plate segment, a reinforcing rib, a folded structure, or a welded reinforcing sheet, etc.

[0092] Reference Figure 9 As shown, in some embodiments, a second shock absorber 160 is provided between the first battery pack 300 and the support frame 100.

[0093] In the above embodiment, the second shock absorber 160 is an elastic vibration isolation element disposed between the support frame 100 and the first battery pack 300. Its function is to buffer and attenuate the vibrations and impacts from the vehicle frame, the road surface and the commercial vehicle during operation, thereby reducing the dynamic load transmitted to the second battery pack 400 and reducing the risk of damage to the second battery pack 400.

[0094] Among them, reference Figure 9 As shown, the second damping component 160 includes a base portion 161 and a plurality of damping portions 162. The plurality of damping portions 162 are disposed on the base portion 161 and can be positioned and connected to the base portion 161 by means of bolt tightening, embedding, or bonding. The base portion 161 can be fixedly connected to the support frame 100 by means of bolt connection, welding connection, or clamping connection, and the damping portions 162 are connected to the first battery pack 300.

[0095] When the commercial vehicle is in motion, the high-frequency vibrations and transient impacts transmitted by the frame first act on the support frame 100 and the base 161, and then the damping part 162 absorbs part of the vibration energy through compression, rebound and shear deformation, thereby reducing the vibration load transmitted to the first battery pack 300.

[0096] The shape of the shock absorber 162 can be designed as cylindrical, block, ring or multi-layered plate according to the installation space.

[0097] For example, the damping part 162 can be a damping pad or a damping bushing. The damping pad or damping bushing can be made of rubber, silicone rubber, polyurethane, EPDM (Ethylene Propylene Diene Monomer) elastomer or rubber-plastic composite material. It can also be made of metal skeleton rubber-coated part, fabric reinforced elastic part or foamed elastomer to take into account load-bearing capacity, durability and damping performance.

[0098] It should be understood that the damping pads and damping bushings are merely exemplary forms and can be replaced by structures with equivalent vibration isolation functions, such as rubber blocks, elastic columns, vibration isolation rings, or composite damping pads.

[0099] Reference Figures 1 to 5 As shown, in some embodiments, there are multiple mounting positions 111, which are spaced apart along the length of the slide rail 110.

[0100] In the above embodiment, multiple mounting positions 111 can realize the arrangement of multiple second battery packs 400 as needed. The multiple mounting positions 111 are spaced apart along the length direction of the slide rail 110, so that the second battery packs 400 can be installed in sequence at different positions and complete the plug-in cooperation with the electrical interface 120 at their respective mounting positions 111, thereby forming an expandable battery arrangement structure.

[0101] For example, the capacity of the first battery pack 300 can be 200kWh, and the capacity of the second battery pack 400 can also be 200kWh. The battery system 10 provided in this application embodiment can be matched with different configuration schemes according to transportation conditions to meet diverse range requirements.

[0102] For example, a single first battery pack 300 can achieve a 200 kWh capacity configuration suitable for short-distance transportation. Adding one second battery pack 400 to the first battery pack 300 provides a 400 kWh capacity configuration suitable for short-to-medium distance transportation. Adding two second battery packs 400 to the first battery pack 300 provides a 600 kWh capacity configuration suitable for medium-to-long distance transportation. Adding three second battery packs 400 to the first battery pack 300 provides an 800 kWh capacity configuration suitable for long-distance transportation.

[0103] Reference Figure 2 As shown, in some embodiments, the length direction of the support frame 100 is used to extend along the driving direction of the commercial vehicle, and the extension direction of the slide rail 110 is parallel to the length direction of the support frame 100.

[0104] In the above embodiment, the arrangement makes the sliding direction of the second battery pack 400 consistent with the longitudinal direction of the commercial vehicle body, thus making it easier to arrange multiple mounting positions 111 in the narrow space of the vehicle frame and reducing steering interference during assembly and replacement.

[0105] Reference Figure 1 As shown, in some embodiments, the extension direction of the slide rail 110 intersects the length direction of the support frame 100.

[0106] Wherein, the extension direction of the slide rail 110 intersects the length direction of the support frame 100, meaning that the slide rail 110 is arranged perpendicularly, obliquely, or partially intersecting with the support frame 100, so that the second battery pack 400 enters the mounting position 111 laterally or obliquely.

[0107] The intersecting relationship can be set according to the frame structure, lateral space and maintenance access requirements of different vehicle models. The slide rail 110 can be a transversely arranged rail, an oblique guide rail or a zigzag combination rail. When the second battery pack 400 moves along the slide rail 110, it can still complete the plug-in cooperation with the electrical interface 120 within the limited area.

[0108] By defining the correspondence between the length direction of the support frame 100 and the driving direction of the commercial vehicle, and the parallel or intersecting relationship between the slide rail 110 and the length direction of the support frame 10, the battery system 10 can be provided with a variety of installation postures that are adapted to different chassis layouts, thereby improving the utilization rate of the vehicle space and the flexibility of the expanded layout.

[0109] Preferably, refer to Figure 1 As shown, the extension direction of the slide rail 110 is perpendicular to the length direction of the support frame 100.

[0110] Reference Figure 1 and Figure 2 As shown, the commercial vehicle provided in this application embodiment includes a commercial vehicle body 20 and a battery system 10, as described above, disposed on the commercial vehicle body 20.

[0111] In this application, the commercial vehicle adopts all the technical solutions of any of the aforementioned battery systems 10, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0112] The commercial vehicle can be a tractor, such as a long-nose tractor, a cab-over tractor, or a high-roof tractor. It can also be an engineering vehicle, such as a dump truck, a mixer truck, or a special-purpose chassis vehicle.

[0113] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only.

[0114] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A battery system, characterized in that, include: A support frame (100) is provided with a slide rail (110) and at least one electrical interface (120). The slide rail (110) is provided with at least one mounting position (111). The electrical interface (120) is correspondingly provided with the mounting position (111). The support frame (100) is used to be installed on the frame of a commercial vehicle. A battery management unit (200) is disposed on the support frame (100) and is electrically connected to the electrical interface (120); A first battery pack (300) is disposed on the support frame (100) and is electrically connected to the battery management unit (200); At least one second battery pack (400) is slidably disposed on the slide rail (110). When the second battery pack (400) slides to the mounting position (111), the connector (410) of the second battery pack (400) is plugged into the electrical interface (120), and the second battery pack (400) is detachably connected to the slide rail (110).

2. The battery system according to claim 1, characterized in that, The second battery pack (400) is provided with a first positioning member (420), and the slide rail (110) is provided with a second positioning member (112), the second positioning member (112) being located within the mounting position (111); When the second battery pack (400) slides to the mounting position (111), the first positioning member (420) engages with the second positioning member (112).

3. The battery system according to claim 2, characterized in that, The first positioning member (420) includes a snap-fit ​​part (421) and an elastic part (422). The second battery pack (400) is provided with a mounting groove (430). The snap-fit ​​part (421) is slidably disposed in the mounting groove (430). The two ends of the elastic part (422) are respectively connected to the snap-fit ​​part (421) and the first mounting groove (430). The second positioning member (112) is a snap-fit ​​groove, and the elastic part (422) is configured to drive the snap-fit ​​part (421) to extend out of the mounting groove (430) and snap-fit ​​with the snap-fit ​​groove when the mounting groove (430) is in communication with the snap-fit ​​groove.

4. The battery system according to claim 2, characterized in that, It also includes a locking connector (500), a connecting part (440) is provided on the second battery pack (400), a through hole (441) is provided on the connecting part (440), and a connecting hole (113) is provided on the slide rail (110), the connecting hole (113) being located in the mounting position (111); When the through hole (441) and the connecting hole (113) are in communication, the locking connector (500) is connected to the connecting hole (113) through the through hole (441) to restrict the second battery pack (400) from continuing to move.

5. The battery system according to any one of claims 1 to 4, characterized in that, The slide rail (110) includes a slide rail base (115) and a slide rail portion (116) disposed on the slide rail base (115). The slide rail base (115) is disposed on the support frame (100). The second battery pack (400) is slidably disposed on the slide rail portion (116). A limiting protrusion (130) is provided on the slide rail base (115). The limiting protrusion (130) is located on at least one side of the slide rail portion (116), and the extending direction of the limiting protrusion (130) is parallel to the extending direction of the slide rail portion (116). And / or, at least one end of the slide rail (116) is provided with a limit stop (140).

6. The battery system according to claim 5, characterized in that, A first shock absorber (150) is provided between the slide rail base (115) and the support frame (100). And / or, the slide rail base (115) is provided with a reinforcing part (114).

7. The battery system according to any one of claims 1 to 4, characterized in that, A second shock absorber (160) is provided between the first battery pack (300) and the support frame (100).

8. The battery system according to any one of claims 1 to 4, characterized in that, The number of mounting positions (111) is multiple, and the multiple mounting positions (111) are spaced apart along the length direction of the slide rail (110).

9. The battery system according to any one of claims 1 to 4, characterized in that, The length direction of the support frame (100) is used to extend along the driving direction of the commercial vehicle, and the extension direction of the slide rail (110) is parallel to the length direction of the support frame (100). Alternatively, the extension direction of the slide rail (110) intersects the length direction of the support frame (100).

10. A commercial vehicle, characterized in that, It includes a commercial vehicle body (20) and a battery system (10) as described in any one of claims 1 to 9 disposed on the commercial vehicle body (20).

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