Battery pack, chassis and vehicle

Abstract

The utility model discloses a battery pack, a chassis and a vehicle, and relates to the technical field of battery packs. The battery pack comprises a battery box arranged between a front suspension and a rear suspension, the battery box comprises a main frame, a power distribution frame, a battery cell and a power distribution box, and a battery cell assembly area is formed in the main frame; the power distribution frame is connected to the rear end of the main frame and forms a protruding part at the rear end of the main frame, a power distribution box installation area is formed in the power distribution frame, and the power distribution frame is suitable for being contained between suspension installation points at the two ends of a rear suspension; the battery cell is mounted in the battery cell assembly area; the power distribution box is installed in the power distribution box installation area. According to the battery pack structure, by utilizing the existing chassis space, the arrangement space and the electric quantity of the battery pack are increased, and the operation reliability of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, concretely relates to a battery pack, chassis and vehicle. BACKGROUND

[0002] In the existing part vehicle design, the arrangement form of some battery packs does not make full use of the space of the chassis, resulting in limited space for arranging the battery pack, which further affects the battery capacity. In addition, there is a certain electromagnetic interference problem between the distribution box and the battery cell, which further affects the electrical performance.

[0003] Therefore, a new battery pack structure needs to be proposed to solve these problems. SUMMARY

[0004] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model discloses a battery pack, which is arranged between the front suspension and the rear suspension, and the battery box of the battery pack is arranged between the front suspension and the rear suspension, thereby effectively utilizing the space of the vehicle bottom, so that the overall capacity and the capacity of the battery pack are improved, and the vehicle provides more durable endurance capability.

[0005] The utility model discloses a chassis.

[0006] The utility model discloses a vehicle

[0007] According to the battery pack of the utility model first aspect embodiment, including: the battery box that sets up between the front suspension and rear suspension, the battery box includes main frame, distribution frame, battery cell and distribution box, forms the battery cell assembly area in the main frame, the distribution frame is connected at the rear end of the main frame, and the distribution frame constitutes the convex part of the rear end of the main frame, and the distribution frame forms the distribution box mounting area, and the distribution frame is suitable for being contained between the suspension mounting point of both ends of the rear suspension, the battery cell is installed in the battery cell assembly area, and the distribution box is installed in the distribution box mounting area.

[0008] According to the battery pack of the utility model embodiment, the battery box of the battery pack is arranged between the front suspension and the rear suspension, effectively utilizes the space of the vehicle bottom, thereby helping to improve the overall capacity and the capacity of the battery pack, and providing more durable endurance capability for the vehicle.

[0009] By setting the main frame for installing the battery cell and the distribution frame for the distribution box in the battery box, the distribution box and the battery cell are arranged separately. Reduce the electromagnetic interference between the battery cell and the distribution box.

[0010] Among them, the region between the suspension mounting points of both ends of the rear suspension is used to install and contain the distribution frame, which expands the battery cell assembly area, provides more abundant arrangement space for the battery cell, thereby effectively improving the capacity and endurance capability of the battery pack, and also realizes the physical isolation between the distribution box and the battery cell.

[0011] Through the separation arrangement, the electromagnetic interference between the power distribution box and the battery cell is reduced, and the electrical performance and stability of the battery pack are improved.

[0012] According to the battery pack of some embodiments of the utility model, the rear end of the power distribution frame is provided with an external interface for connecting with the power distribution box, and the external interface is arranged corresponding to the middle part of the rear suspension.

[0013] According to the battery pack of some embodiments of the utility model, the main frame comprises: a main frame rear end plate, which is arranged in transverse extension and is located at the rear side of the battery cell assembly area; the power distribution frame comprises: a power distribution rear end plate, a power distribution left side plate and a power distribution right side plate, the power distribution rear end plate is arranged in transverse extension and is located at the rear side of the power distribution box mounting area; the power distribution left side plate is arranged in longitudinal extension, the front end of the power distribution left side plate is connected with the main frame rear end plate and the rear end is connected with the power distribution rear end plate; the power distribution right side plate is arranged in longitudinal extension, the front end of the power distribution right side plate is connected with the main frame rear end plate and the rear end is connected with the power distribution rear end plate, and the power distribution left side plate and the power distribution right side plate are located at the transverse two sides of the power distribution box mounting area.

[0014] In some optional embodiments, the two ends of the power distribution left side plate are respectively welded with the main frame rear end plate and the power distribution rear end plate, and the two ends of the power distribution right side plate are respectively welded with the main frame rear end plate and the power distribution rear end plate.

[0015] Optionally, the battery pack further comprises: a top cover and a bottom plate, the top cover is located at the top of the main frame and the power distribution frame, and the bottom plate is located at the bottom of the main frame and the power distribution frame; wherein the part of the main frame rear end plate between the battery cell assembly area and the power distribution box mounting area is connected with the top cover and the bottom plate respectively to separate the battery cell assembly area and the power distribution box mounting area.

[0016] In some optional embodiments, the battery pack further comprises: an insulating material layer arranged on the main frame rear end plate.

[0017] According to the battery pack of some embodiments of the utility model, the power distribution frame is rectangular, and the power distribution frame is located at the middle position of the main frame.

[0018] According to the battery pack of some embodiments of the utility model, the battery pack further comprises: a battery cell heat exchange element, which is arranged in the battery cell assembly area to provide heat exchange protection for the battery cell.

[0019] In some optional embodiments, the battery pack further comprises: a power distribution heat exchange element arranged at the power distribution box mounting area to provide heat exchange protection for the power distribution box, and the power distribution heat exchange element and the cell heat exchange element are arranged independently of each other.

[0020] Optionally, the power distribution heat exchange element is a power distribution liquid cooling plate arranged at the top and / or bottom of the power distribution box.

[0021] According to the chassis of the second aspect of the present application, the chassis comprises a vehicle body, a rear suspension, a front suspension and a battery pack. The rear suspension has suspension mounting points at both ends and is connected to the vehicle body, and the middle part of the rear suspension is arranged protruding rearward. The front suspension is connected to the vehicle body at both ends. The battery pack is mounted on the vehicle body and located in front of the rear suspension. The battery pack is the battery pack of the first aspect of the present application.

[0022] According to the vehicle of the third aspect of the present application, the chassis comprises the chassis of the second aspect of the present application.

[0023] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0025] Figure 1 is a structural schematic view of the vehicle of some embodiments of the present application;

[0026] Figure 2 is a structural schematic view of the battery pack of some embodiments of the present application;

[0027] Figure 3 is a sectional view of the battery pack of some embodiments of the present application;

[0028] Figure 4 is a perspective view of the battery pack of some embodiments of the present application.

[0029] LIST OF REFERENCE NUMERALS:

[0030] vehicle 1000,

[0031] chassis 100, vehicle body 10, rear suspension 20, suspension mounting point 21, battery pack 30, front suspension 40,

[0032] The main frame 31, the electric core assembly area 311, the main frame rear end plate 312, the power distribution frame 33, the power distribution box mounting area 331, the external interface 332, the power distribution rear end plate 333, the power distribution left side plate 334, the power distribution right side plate 335, the electric core 34, the power distribution box 35, the top cover 36, the bottom plate 37, and the insulating material layer 38. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0035] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the description of the present application, it should be understood that the meaning of "and / or" is to include three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme.

[0037] The following refers to Figures 1-4 The battery pack 30 according to the first embodiment of the present application is described below.

[0038] As shown in Figure 1 The battery pack 30 according to the embodiment of the present application includes a battery box arranged between the front suspension and the rear suspension.

[0039] AsFigures 2-4 As shown, the battery box comprises a main frame 31, a power distribution frame 33, a battery cell 34 and a power distribution box 35.

[0040] The main frame 31 is the main structure of the battery pack 30. Optionally, the main frame 31 is made of high-strength, lightweight material.

[0041] The main frame 31 forms a battery cell assembly area 311 inside. The battery cell 34 is installed in the battery cell assembly area 311 to ensure that the battery cell 34 can be firmly fixed.

[0042] Referring to Figures 3-4 The power distribution frame 33 is connected to the rear end of the main frame 31, and the power distribution frame 33 constitutes a protruding part of the rear end of the main frame 31. The power distribution frame 33 forms a power distribution box mounting area 331 inside, and the power distribution frame 33 is adapted to be accommodated between the suspension mounting points 21 at both ends of the rear suspension 20. The power distribution box 35 is installed in the power distribution box mounting area 331.

[0043] Since the power distribution frame 33 is configured as a protruding part of the rear end of the main frame 31, such a protruding structure enables the power distribution frame 33 to be adapted to the space between the suspension mounting points 21 at both ends of the rear suspension 20.

[0044] Specifically, the protruding shape of the power distribution frame 33 matches the layout of the rear suspension 20, which can make full use of the idle area between the rear suspension mounting points 21 without occupying additional chassis space, so that the layout of the battery pack 30 in the chassis is more compact and efficient.

[0045] At the same time, since the main frame 31 and the power distribution frame 33 are arranged in sequence along the front-rear direction, the battery cell 34 and the power distribution box 35 are also separated along the front-rear direction. In this way, the battery cell 34 and the power distribution box 35 are independent of each other in the battery pack structure. Therefore, the battery cell 34 in the battery pack 30 can obtain a more spacious layout area, thereby increasing the capacity of the battery pack 30 to a certain extent, which helps to improve the cruising range of the vehicle 1000.

[0046] In addition, the separation of the power distribution box 35 and the battery cell 34 can also avoid the potential electromagnetic interference problem between the high-voltage components in the power distribution box 35 and the battery cell 34, thereby helping to improve the safety and reliability of the electrical system.

[0047] Optionally, the battery cell assembly area 311 comprises supports, fixing devices, heat-conducting materials and the like. To support the battery cell 34 and prevent it from shifting due to vibration or temperature change during operation, while also helping the battery cell 34 to dissipate heat and maintain its working temperature within a safe range. Such a layout not only improves the stability and durability of the battery cell 34, but also provides a solid foundation for the overall performance and safety of the battery pack 30.

[0048] Optionally, the power distribution box mounting area 331 is equipped with a fixing frame, so that the power distribution box 35 can be firmly mounted and smoothly connected to the electrical system of the battery pack 30. The power distribution box 35 is internally integrated with a battery management system and other related components, which are responsible for monitoring the state of the battery cells 34, controlling the output and input of electric quantity, and protecting the battery from abnormal conditions such as overcharging, overdischarging, and short circuit. By separating the installation of the power distribution box 35 from the battery cells 34, not only is it convenient to maintain and upgrade the power distribution box 35 individually, but also the electrical safety and reliability of the entire battery pack 30 are improved.

[0049] Optionally, the power distribution box 35 further comprises a battery pack controller and a vehicle all-in-one controller.

[0050] According to some optional embodiments of the utility model, please refer to Figures 3-4 The rear end of the power distribution frame 33 is provided with an external interface 332 for connecting the power distribution box 35. The position of the external interface 332 corresponds to the middle part of the rear suspension 20.

[0051] It is known that the external interface 332 serves as a channel for connecting the power distribution box 35 with external circuits, and is responsible for transmitting high-voltage electric energy and signals.

[0052] In combination Figure 1 , the middle part of the rear suspension 20 protrudes outward, and by setting the external interface 332 on the protruding part of the rear suspension 20, not only does it make the arrangement of the battery pack 30 more compact, but it also helps to create a larger physical gap between the external interface 332 and the battery cells 34, further avoiding the problem of electromagnetic interference that may occur between the external interface 332 and the battery cells 34.

[0053] Moreover, by setting the external interface 332 at the middle position of the rear suspension 20, it is also convenient to connect with other components (such as drive motor, controller, etc.) of the vehicle 1000, thereby reducing the complexity and length of the connection lines.

[0054] Therefore, such a spatial layout design can further optimize the space utilization within the chassis 100 and improve the reliability of the battery pack 30.

[0055] According to some embodiments of the utility model, the battery pack 30, as shown in Figure 3 The main frame 31 comprises a main frame rear end plate 312. The main frame rear end plate 312 is horizontally extended and located at the rear side of the battery cell assembly area 311. Here, the horizontal extension is in the same direction as the left-right direction of the vehicle 1000.

[0056] The main frame rear end plate 312 serves to support the battery cell assembly area 311 and also serves as a connection point for connecting the power distribution frame 33 with the main frame 31. Optionally, the main frame rear end plate 312 is a high-strength lightweight material piece, such as an aluminum alloy piece or a carbon fiber composite material piece.

[0057] Referring to Figures 2-3 The power distribution frame 33 includes a power distribution rear end plate 333, a power distribution left side plate 334, and a power distribution right side plate 335.

[0058] The power distribution rear end plate 333 extends laterally and is located at the rear side of the power distribution box mounting area 331. The power distribution left side plate 334 extends longitudinally, with its front end connected to the main frame rear end plate 312 and its rear end connected to the power distribution rear end plate 333. The power distribution right side plate 335 extends longitudinally, with its front end connected to the main frame rear end plate 312 and its rear end connected to the power distribution rear end plate 333. The power distribution left side plate 334 and the power distribution right side plate 335 are located at the lateral sides of the power distribution box mounting area 331. Here, lateral extension is in the same direction as the left-right direction of the vehicle 1000, and longitudinal extension is in the same direction as the front-rear direction of the vehicle 1000.

[0059] Specifically, the power distribution rear end plate 333 extends laterally along the left-right direction of the vehicle 1000 and is located at the rear side of the power distribution box mounting area 331. Optionally, the width of the power distribution rear end plate 333 is comparable to the width of the chassis 100. The power distribution rear end plate 333 is used to support and fix the electrical components in the power distribution system.

[0060] The power distribution rear end plate 333 is integrated with external interfaces 332, which are used to connect with external circuits. At the same time, the power distribution rear end plate 333 can also be provided with heat dissipation channels or vents to help reduce the temperature in the power distribution area and ensure the normal operation of the electrical components.

[0061] The power distribution left side plate 334 and the power distribution right side plate 335 are located at the left and right sides (i.e., lateral sides) of the power distribution box mounting area 331, respectively, and extend longitudinally along the front-rear direction of the vehicle 1000. The front ends of the two plates are connected to the main frame rear end plate 312, and the rear ends are connected to the power distribution rear end plate 333, together forming a closed power distribution box mounting area 331.

[0062] The power distribution box mounting area 331 is square in shape. This square shape facilitates batch processing and manufacturing on the production line, reducing the separate mold cost of the battery pack 30 rear end plate.

[0063] Furthermore, the square power distribution frame 33 is also easier and more efficient to assemble with other components of the chassis 100. Due to the regular shape, the connection and cooperation of the power distribution frame 33 with the main frame rear end plate 312, the battery pack 30 rear end plate, and other components are easier to achieve, reducing the debugging and correction work in the assembly process.

[0064] Optionally, the power distribution left side plate 334 and / or the power distribution right side plate 335 are pieces of high-strength lightweight material. For example, pieces of aluminum alloy or carbon fiber composite material. In addition, the power distribution left side plate 334 and the power distribution right side plate 335 can also contain heat dissipation channels or vents to help dissipate heat and maintain a stable temperature within the power distribution area.

[0065] Here, the connection between the power distribution left side plate 334 and the power distribution right side plate 335 and the main frame rear end plate 312 and the power distribution rear end plate 333 can be mechanical connections such as welding, bolting, or riveting. The choice of these connection methods depends on the specific materials, working environment, etc., and the present application does not make specific limitations on the connection method.

[0066] In some optional embodiments, the two ends of the power distribution left side plate 334 are respectively welded to the main frame rear end plate 312 and the power distribution rear end plate 333, and the two ends of the power distribution right side plate 335 are respectively welded to the main frame rear end plate 312 and the power distribution rear end plate 333.

[0067] In the structure of the power distribution frame 33, the two ends of the power distribution left side plate 334 and the power distribution right side plate 335 are respectively welded to the main frame rear end plate 312 and the power distribution rear end plate 333, which can form a connection point with high strength and durability. This welding connection method can withstand large loads and vibrations, ensuring the stability and safety of the power distribution frame 33 during the driving of the vehicle 1000.

[0068] Compared with bolting or riveting, welding connection does not require additional fasteners or connecting pieces, to some extent, simplifying the assembly process and improving production efficiency. At the same time, welding connection also reduces errors and debugging work in the assembly process, thereby helping to improve the quality and reliability of the product.

[0069] At the same time, welding connection does not require additional fasteners or connecting pieces, which can also reduce material costs and production costs to some extent. In addition, since welding connection can realize automated production, it is helpful to further improve production efficiency and reduce labor costs.

[0070] Optionally, as shown in Figure 4 The battery pack 30 also includes a top cover 36 and a bottom plate 37. The top cover 36 is located at the top of the main frame 31 and the power distribution frame 33. The bottom plate 37 is located at the bottom of the main frame 31 and the power distribution frame 33. Among them, the part of the main frame rear end plate 312 between the cell assembly area 311 and the power distribution box mounting area 331 is connected with the top cover 36 and the bottom plate 37 respectively, so as to separate the cell assembly area 311 and the power distribution box mounting area 331.

[0071] The top cover 36 is located on the top of the main frame 31 and the power distribution frame 33. It not only provides protection for the battery pack 30 from external objects, but also plays a sealing and waterproof role. Optionally, the top cover 36 is provided with ventilation openings and cooling fins to ensure that the heat inside the battery pack 30 can be dissipated in time to prevent safety problems caused by overheating.

[0072] The bottom plate 37 is located at the bottom of the main frame 31 and the power distribution frame 33, which provides certain support and protection for the battery pack 30.

[0073] In the structure of the main frame rear end plate 312, the part between the cell assembly area 311 and the power distribution box mounting area 331 is connected with the top cover 36 and the bottom plate 37 respectively. This connection method can not only enhance the overall structural strength of the battery pack 30, avoid the top cover 36 and the bottom plate 37 from being concave towards the battery pack 30, but also ensure the effective isolation between the cell assembly area 311 and the power distribution box mounting area 331, to prevent electromagnetic interference between the cell 34 and the high-voltage components in the power distribution box 35, and ensure the use reliability of the battery pack 30.

[0074] In some optional embodiments, referring to Figure 4 , the battery pack 30 further comprises: an insulating material layer 38 arranged on the main frame rear end plate 312. The insulating material layer 38 is located between the power distribution box mounting area 331 and the cell assembly area 311, and is used as a barrier to electromagnetic interference, thereby further enhancing the safety and overall reliability of the battery pack 30 during operation.

[0075] Optionally, the insulating material layer 38 is a mica sheet layer.

[0076] According to the battery pack 30 of some embodiments of the present application, Figure 3 The power distribution frame 33 is rectangular, and the power distribution frame 33 is located at the middle position of the main frame 31.

[0077] The rectangular power distribution frame 33 is easy to process and manufacture, and can provide stable support and layout space. The four corners of the rectangle can provide good structural strength, which helps to resist external impact and vibration, thereby ensuring the stability and safety of the power distribution frame 33 and its internal electrical components.

[0078] Furthermore, placing the power distribution frame 33 at the central position of the main frame 31 helps to achieve weight balance of the battery pack 30. This helps to reduce the bumping and instability of the vehicle 1000 during driving, and improves the comfort and safety of driving.

[0079] Meanwhile, the central position also helps to optimize the heat dissipation performance of the battery pack 30. The power distribution frame 33 and its internal electrical elements will generate heat during operation, and the central position can increase the contact area of the power distribution frame 33 with the surrounding air to some extent, use the flow of the surrounding air to dissipate heat, reduce the risk of temperature rise, and thus prolong the service life of the battery pack 30.

[0080] Moreover, placing the power distribution frame 33 in the central position of the main frame 31 also helps to simplify the maintenance process of the battery pack 30. When the power distribution system needs to be overhauled or replaced, technicians can more easily access the power distribution frame 33 located in the central position, reducing maintenance difficulty and cost.

[0081] The battery pack 30 according to some embodiments of the present application also includes: a battery cell heat exchange element. The battery cell heat exchange element is arranged in the battery cell assembly area 311 to provide heat exchange protection for the battery cell 34.

[0082] The battery cell heat exchange element is in close proximity to or directly contacts the battery cell 34. This ensures that the battery cell heat exchange element can efficiently absorb or release the heat generated by the battery cell 34 during charging and discharging, achieving rapid transfer and balance of heat, thereby reducing the risk of thermal runaway of the battery cell 34 due to overheating, improving the reliability of the battery pack 30, and improving the use safety of the vehicle 1000.

[0083] The structure type of the battery cell heat exchange element is not limited. Specifically, the battery cell heat exchange element can be a air-cooled radiator, a water-cooled radiator, or the like. Its material can be a cast iron radiator, a steel radiator, or a radiator of other materials, etc.

[0084] Optionally, the battery cell heat exchange element is a heat conduction material element. For example, the battery cell heat exchange element can be a liquid cooling plate, etc. When the temperature of the battery cell 34 rises, the liquid cooling plate can quickly respond to the temperature change of the battery cell 34 and transfer heat to the outside of the battery pack 30 through a cooling medium circulation method or be reused through the thermal management circulation system of the vehicle 1000.

[0085] In some optional embodiments, the battery pack 30 also includes: a power distribution heat exchange element. The power distribution heat exchange element is arranged in the power distribution box mounting area 331 to provide heat exchange protection for the power distribution box 35, and the power distribution heat exchange element and the battery cell heat exchange element are independently arranged.

[0086] The power distribution heat exchange element is in close proximity to or directly contacts the power distribution box 35. This ensures that the power distribution heat exchange element can efficiently absorb or release the heat generated by the power distribution box 35 during use, achieve rapid transfer and balance of heat, thereby reducing the risk of thermal runaway of the power distribution box 35 due to overheating, improving the reliability of the battery pack 30, and improving the use safety of the vehicle 1000.

[0087] The structural type of the power distribution heat exchange component is not limited. Specifically, the power distribution heat exchange component can be a fan-cooled radiator, a water-cooled radiator, or the like. The material thereof can be a cast iron radiator, a steel radiator, or a radiator made of other materials, or the like.

[0088] Optionally, the power distribution heat exchange component is a heat conduction material component. For example, the power distribution heat exchange component can be a liquid cooling plate, or the like. When the temperature of the power distribution box 35 rises, the liquid cooling plate can quickly respond to the temperature change of the battery cell 34 and transfer heat to the outside of the battery pack 30 through a cooling medium circulation mode or be reused through a thermal management circulation system of the vehicle 1000.

[0089] It is worth noting that the power distribution heat exchange component and the battery cell heat exchange component are independently arranged. This means that each of them has an independent thermal management system and can be accurately controlled according to the actual temperature requirements of the power distribution box 35 and the battery cell 34. This helps to improve the flexibility and efficiency of thermal management, and also avoids thermal interference between different regions, ensuring the overall thermal balance and stability of the battery pack 30.

[0090] Optionally, the power distribution heat exchange component is a power distribution liquid cooling plate arranged at the top and / or bottom of the power distribution box 35.

[0091] In the present application, the arrangement position of the power distribution liquid cooling plate is very flexible. It can be arranged at the top or bottom of the power distribution box 35, or even installed at both positions to maximize the heat exchange efficiency. This layout takes into account the layout and heat dissipation requirements of the electrical elements inside the power distribution box 35, ensuring that heat can be quickly and evenly transferred in multiple directions, improving the uniformity of heat exchange.

[0092] Referring to Figure 1 , a chassis 100 according to the second aspect of the present application is described.

[0093] The chassis 100 includes a vehicle body 10, a rear suspension 20, a battery pack 30, and a front suspension 40.

[0094] The rear suspension 20 has suspension mounting points 21 at both ends and is connected to the vehicle body 10. The middle part of the rear suspension 20 is arranged protruding rearward. The front suspension 40 is connected to the vehicle body 10 at both ends. The battery pack 30 is mounted on the vehicle body 10 and located on the front side of the rear suspension 20.

[0095] By arranging the battery pack 20 in the above embodiment, the utilization rate of the chassis 100 is improved.

[0096] As shown in Figure 1 , a vehicle 1000 according to the third aspect of the present application is described, which includes a chassis 100 according to the second aspect of the present application.

[0097] It should be noted that the vehicle 1000 can be a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle or a range extended vehicle, etc.

[0098] By adopting the chassis 100 of the second aspect embodiment, a battery pack 30 with larger capacity can be installed, thereby effectively enhancing the cruising range of the vehicle 1000. Meanwhile, the vehicle 1000 also has high reliability.

[0099] The following refers to Figure 1 - Figure 4 The battery pack 30 according to the embodiments of the utility model is described in detail with one specific embodiment. It should be understood that the following description is only exemplary and is not a specific limitation on the utility model.

[0100] The battery pack 30 includes a battery box.

[0101] Referring to Figure 1 The battery box is arranged between the front suspension 40 and the rear suspension 20.

[0102] Referring to Figures 2-3 The battery box includes a main frame 31, a power distribution frame 33, a battery cell 34, a power distribution box 35, a top cover 36, a bottom plate 37, an insulating material layer 38, a battery cell heat exchange element and a power distribution heat exchange element.

[0103] The main frame 31 is installed on the vehicle body 10.

[0104] The main frame 31 is formed with a battery cell assembly area 311, and the battery cell 34 is installed in the battery cell assembly area 311.

[0105] The power distribution frame 33 is rectangular and connected to the rear end of the main frame 31 and located at the middle position of the main frame 31. The power distribution frame 33 is formed with a power distribution box installation area 331, and the power distribution frame 33 is located between the suspension mounting points 21 at both ends of the rear suspension 20. The power distribution box 35 is installed in the power distribution box installation area 331.

[0106] The rear end of the power distribution frame 33 is provided with an external interface 332 for connecting with the power distribution box 35, and the external interface 332 is arranged corresponding to the middle portion of the rear suspension 20.

[0107] The main frame 31 includes a main frame rear end plate 312.

[0108] The main frame rear end plate 312 is arranged transversely, and the main frame rear end plate 312 is located at the rear side of the battery cell assembly area 311.

[0109] The power distribution frame 33 comprises a power distribution back plate 333, a power distribution left side plate 334 and a power distribution right side plate 335. The power distribution back plate 333 is horizontally extended and located at the back side of the power distribution box mounting area 331. The power distribution left side plate 334 is longitudinally extended, with the front end connected to the main frame back plate 312 and the back end connected to the power distribution back plate 333. The power distribution right side plate 335 is longitudinally extended, with the front end connected to the main frame back plate 312 and the back end connected to the power distribution back plate 333. The power distribution left side plate 334 and the power distribution right side plate 335 are located at the lateral sides of the power distribution box mounting area 331.

[0110] The two ends of the power distribution left side plate 334 are welded to the main frame back plate 312 and the power distribution back plate 333 respectively, and the two ends of the power distribution right side plate 335 are welded to the main frame back plate 312 and the power distribution back plate 333 respectively.

[0111] Referring to Figure 4 The top cover 36 is located at the top of the main frame 31 and the power distribution frame 33. The bottom plate 37 is located at the bottom of the main frame 31 and the power distribution frame 33.

[0112] The part of the main frame back plate 312 between the battery cell assembly area 311 and the power distribution box mounting area 331 is connected to the top cover 36 and the bottom plate 37 respectively, so as to separate the battery cell assembly area 311 and the power distribution box mounting area 331.

[0113] The insulating material layer 38 is arranged on the main frame back plate 312.

[0114] The battery cell heat exchange component is arranged in the battery cell assembly area 311 to provide heat exchange protection for the battery cell 34.

[0115] The power distribution heat exchange component is arranged in the power distribution box mounting area 331 to provide heat exchange protection for the power distribution box 35. The power distribution heat exchange component and the battery cell heat exchange component are arranged independently.

[0116] The power distribution heat exchange component is a power distribution liquid cooling plate arranged at the top and the bottom of the power distribution box 35.

[0117] Other configurations of the battery pack 30 according to the embodiments of the present application, such as the chassis 100 and the vehicle 1000, are known to those skilled in the art and will not be described in detail herein.

[0118] In the description of the present application, the description of the terms "embodiment" "example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0119] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: The invention comprises a battery box arranged between the front suspension and the rear suspension, wherein the battery box comprises: A main frame, wherein a cell assembly area is formed within the main frame; A power distribution frame connected to the rear end of the main frame, the power distribution frame forming a protruding portion of the rear end of the main frame, a power distribution box installation area formed within the power distribution frame, and the power distribution frame being adapted to be accommodated between the suspension installation points at both ends of the rear suspension; A battery cell, wherein the battery cell is installed in the battery cell assembly area; A power distribution box is installed in the power distribution box installation area.

2. The battery pack according to claim 1, wherein: The rear end of the power distribution frame is provided with an external interface for connecting to the power distribution box, and the external interface is provided corresponding to the middle part of the rear suspension.

3. The battery pack according to claim 1, wherein: The main frame comprises: a main frame rear end plate, the main frame rear end plate is arranged to extend transversely, and the main frame rear end plate is located at the rear side of the battery cell assembly area; The power distribution framework includes: A power distribution rear end plate, which is arranged to extend transversely and is located at the rear side of the power distribution box installation area; A power distribution left side plate, the power distribution left side plate is longitudinally extended, the front end of the power distribution left side plate is connected to the main frame rear end plate and the rear end is connected to the power distribution rear end plate; The power distribution right side plate is longitudinally extended, the front end of the power distribution right side plate is connected to the main frame rear end plate and the rear end is connected to the power distribution rear end plate, the power distribution left side plate and the power distribution right side plate are located on both sides of the distribution box installation area.

4. The battery pack according to claim 3, wherein: The two ends of the power distribution left side plate are respectively welded to the main frame rear end plate and the power distribution rear end plate, and the two ends of the power distribution right side plate are respectively welded to the main frame rear end plate and the power distribution rear end plate.

5. The battery pack according to claim 3, wherein: The battery pack further includes: A top cover, located on top of the main frame and the power distribution frame; A bottom plate, located at the bottom of the main frame and the power distribution frame; The portion of the rear end plate of the main frame located between the battery cell assembly area and the distribution box installation area is connected to the top cover and the bottom plate respectively to separate the battery cell assembly area and the distribution box installation area.

6. The battery pack according to claim 5, characterized in that: The battery pack further includes: an insulating material layer provided on the rear end plate of the main frame.

7. The battery pack according to claim 1, wherein: The power distribution frame is rectangular and is located in the middle of the main frame.

8. The battery pack according to any one of claims 1 to 7, characterized in that: The battery pack further includes: a battery cell heat exchange component, which is arranged in the battery cell assembly area to perform heat exchange protection on the battery cells.

9. The battery pack according to claim 8, characterized in that: The battery pack further includes: a power distribution heat exchange component, which is arranged in the power distribution box installation area to perform heat exchange protection on the power distribution box. The power distribution heat exchange component and the battery cell heat exchange component are arranged independently of each other.

10. The battery pack according to claim 9, characterized in that: The power distribution heat exchange component is a power distribution liquid cold plate arranged on the top and / or bottom of the power distribution box.

11. A chassis, characterized in that: include: body; a rear suspension, wherein both ends of the rear suspension have suspension mounting points and are connected to the vehicle body, and a middle portion of the rear suspension is arranged to protrude rearward; a front suspension, with both ends of the front suspension connected to the vehicle body; The battery pack according to any one of claims 1 to 10, wherein the battery pack is mounted on the vehicle body and is located in front of the rear suspension.

12. A vehicle, characterized in that: Comprising a chassis according to claim 11.

Images