Disclosure of Invention
The vehicle-mounted battery system comprises a base, a plurality of battery packs and a support row, wherein the base is used for being connected with a frame of an electric car, the battery packs are arranged on the base along the thickness direction of the battery packs, the support row is arranged between adjacent battery packs, and the support row extends along the direction perpendicular to the base.
Optionally, the support row includes a plurality of crossbeams and a plurality of longeron, and a plurality of crossbeams interval sets up, and a plurality of longeron interval sets up, and the relative both ends of longeron are connected with the crossbeam respectively, and one of them crossbeam is connected with the collet, and crossbeam and longeron are located between the adjacent battery package, and the battery package is connected with the longeron, and the longeron extends along the direction of perpendicular to collet.
Optionally, the support row further comprises a plurality of stiffening beams, opposite ends of the stiffening beams are respectively connected with adjacent cross beams and longitudinal beams, and the extending directions of the stiffening beams are respectively arranged at an included angle with the extending directions of the cross beams and the longitudinal beams.
Optionally, the vehicle-mounted battery system comprises a fastener, wherein the fastener is positioned in the battery pack and is respectively connected with the battery pack and the longitudinal beam, and a notch for exposing the fastener is formed in the position of the battery pack corresponding to the fastener.
Optionally, the support row comprises a heat insulation pad, the heat insulation pad is arranged in a square frame formed by surrounding the cross beam and the longitudinal beam, and the heat insulation pad is positioned between adjacent battery packs.
Optionally, the vehicle battery system includes a reinforcing bracket connected to the shoe and extending in a direction perpendicular to the shoe to connect to the support row.
Optionally, the reinforcing support comprises a plurality of first supporting beams, a plurality of second supporting beams and a plurality of third supporting beams, wherein the first supporting beams are arranged at intervals, the second supporting beams are arranged at intervals, opposite ends of the first supporting beams are respectively connected with the second supporting beams, one of the first supporting beams is connected with the bottom support, the second supporting beams are connected with the supporting rows, opposite ends of the third supporting beams are respectively connected with the first supporting beams and the second supporting beams, and the extending direction of the third supporting beams is respectively arranged at an included angle with the extending direction of the cross beam and the extending direction of the longitudinal beam.
Optionally, the battery package includes box, a plurality of battery cells and control system, and the box forms and holds the chamber, and the box is connected with the collet, and a plurality of battery cells are by the one end that the box is close to the collet to the other end progressively arrange in holding the chamber in order to form the group battery, and control system is located the one end that the group battery kept away from the collet, control system and group battery electric connection.
Optionally, the thickness of the box body is D, the height of the box body is H, and H/D is more than or equal to 4 and less than or equal to 8.
The invention also comprises an electric car, a car frame and the vehicle-mounted battery system of any one of the above, wherein the vehicle-mounted battery system is arranged on the car frame.
The invention has the beneficial effects that the supporting rows are arranged among the plurality of battery packs arranged on the bottom support along the thickness direction, extend along the direction vertical to the bottom support and are hidden in the battery packs. On one hand, the support row is arranged between the adjacent battery packs, so that the battery packs can be effectively supported and fixed, the battery packs are ensured to be stably and reliably mounted on the base in the running process of the vehicle, mutual extrusion or relative displacement between the battery packs is avoided, and the overall stability and safety of the vehicle-mounted battery system are improved. Therefore, the vehicle-mounted battery system of the embodiment not only effectively solves the problem of stability of battery pack installation, but also improves the overall appearance effect through the hidden support row structure, and realizes synchronous improvement of structural stability and aesthetic property of the vehicle-mounted battery system.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and technical solutions will be clearly and fully shown. It should be noted that the illustrated embodiments are only a part of the present invention and not all possible implementations. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an electric car according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a vehicle-mounted battery system 100 according to an embodiment of the present invention.
The technical field to which the present invention relates is the design and construction of an electric vehicle, and in particular an electric vehicle equipped with an advanced vehicle-mounted battery system 100. The design concept of the electric car aims at providing an efficient and environment-friendly transportation means. It is mainly composed of two core parts, namely a frame 200 and a vehicle-mounted battery system 100. The frame 200 serves as a basic structure of the electric car and plays an important role in supporting the entire weight of the vehicle and connecting the respective components. The vehicle-mounted battery system 100 is carefully designed and mounted on the vehicle frame 200, so that the power source of the electric vehicle is ensured, and the electric vehicle can be driven by electric power, thereby reducing the dependence on the traditional fossil fuel and reducing the environmental pollution.
The trolley is not only suitable for daily personal travel, but also can meet the requirements of commercial transportation. It may be designed for different types of vehicles including, but not limited to, cars, trucks, heavy duty automobiles, and the like. Each type of trolley can be custom designed according to the specific application of the trolley to meet the requirements of different users.
The in-vehicle battery system 100 includes a shoe 10, a plurality of battery packs 20, and a support row 30. The main function of the shoe 10 is to connect with the frame 200 of the electric car, ensuring that the battery system can be stably mounted on the whole car structure. The plurality of battery packs 20 are arranged on the shoe 10 in order along the thickness direction thereof, which not only effectively improves the space utilization, but also contributes to the compactness and integration of the battery system structure, thereby making the arrangement of the trolley chassis more convenient and efficient.
The vehicle-mounted battery system 100 provided in this embodiment is configured such that the support rows 30 are provided between the plurality of battery packs 20 arranged on the shoe 10 in the thickness direction, and the support rows 30 extend in the direction perpendicular to the shoe 10 and are hidden in the battery packs 20. On the one hand, the supporting bars 30 are positioned between the adjacent battery packs 20, so that the battery packs 20 can be effectively supported and fixed, the battery packs 20 are ensured to be stably and reliably mounted on the base 10 in the running process of the vehicle, the mutual extrusion or relative displacement between the battery packs 20 is avoided, the overall stability and safety of the vehicle-mounted battery system 100 are improved, and on the other hand, the supporting bars 30 are arranged inside the battery packs 20 in a hidden mode, the condition that the supporting pieces are exposed is avoided from the appearance, the overall appearance of the vehicle-mounted battery system 100 is more compact and attractive, the visual effect is improved, and the aesthetic requirements of users on the appearance design of the vehicle are met. Therefore, the vehicle-mounted battery system 100 of the embodiment not only effectively solves the problem of stability of the installation of the battery pack 20, but also improves the overall appearance effect through the hidden support row 30 structure, and realizes the synchronous improvement of the structural stability and the aesthetic property of the vehicle-mounted battery system 100.
Referring to fig. 1 to 3, fig. 3 is a schematic diagram illustrating an internal structure of a vehicle-mounted battery system 100 according to an embodiment of the invention.
The support row 30 specifically includes a plurality of cross beams 31 and a plurality of longitudinal beams 32, the plurality of cross beams 31 and the plurality of longitudinal beams 32 are respectively arranged at intervals, opposite ends of the longitudinal beams 32 are respectively connected with the cross beams 31 to form a stable frame structure, one of the cross beams 31 is connected with the bottom bracket 10, the longitudinal beams 32 extend along a direction perpendicular to the bottom bracket 10 and are connected with the battery packs 20, and the cross beams 31 and the longitudinal beams 32 are arranged between adjacent battery packs 20.
In the above structural design, the longitudinal beams 32 are extended perpendicular to the direction of the bottom support 10, so that the longitudinal beams 32 can effectively support and stabilize the battery pack 20, and prevent the battery pack 20 from shifting or tilting during vibration or vehicle running, and meanwhile, the rigidity and strength of the whole structure can be further enhanced through the connection of the cross beams 31 and the bottom support 10, and the connection stability between the support rows 30 and the bottom support 10 is ensured, so that the structural stability and safety of the whole vehicle-mounted battery system 100 are improved. In addition, the frame structure formed by the cross beam 31 and the longitudinal beam 32 is positioned between the adjacent battery packs 20, so that the space between the battery packs 20 is effectively utilized while the stable supporting effect is achieved, the whole battery system structure is more compact, and the whole layout is more reasonable.
Therefore, the cross beam 31 and the longitudinal beam 32 are matched and connected to form a stable frame structure, so that the problems that the battery pack 20 in the traditional vehicle-mounted battery system 100 is easy to displace and is unstable in connection are solved, the stability and reliability of the installation of the battery pack 20 are obviously improved, and the optimization of the overall structure of the vehicle-mounted battery system 100 and the improvement of safety performance are further realized.
The support row 30 includes insulation pads 50, the insulation pads 50 being disposed within a box defined by the cross members 31 and the stringers 32, the insulation pads 50 being located between adjacent battery packs 20.
In this embodiment, by providing the heat insulation pad 50 in the support row 30, the heat insulation pad 50 is disposed in a frame formed by surrounding the cross beam 31 and the longitudinal beam 32 and is located between the adjacent battery packs 20, so that heat transfer between the adjacent battery packs 20 can be effectively blocked. Specifically, once an abnormal heat generation or local high temperature occurs in a certain battery cell in the battery pack 20, the heat insulation pad 50 can be rapidly interposed to effectively isolate and block the heat transfer to the adjacent battery pack 20, thereby avoiding heat diffusion and significantly reducing the risk of thermal runaway of the battery system. In addition, the ingenious layout of the heat insulation pad 50 also fully utilizes the structural space enclosed by the cross beam 31 and the longitudinal beam 32, so that the whole structure is more compact and reasonable, the installation space is not required to be additionally occupied, the safety of a battery system is improved, and the space utilization efficiency is also remarkably improved. Therefore, the heat insulation pad 50 is arranged in the square frame enclosed by the cross beam 31 and the longitudinal beam 32, so that the problem of easy conduction and diffusion of heat between the adjacent battery packs 20 in the traditional vehicle-mounted battery system 100 is effectively solved, the overall heat management performance of the battery system is obviously improved, and the operation safety and reliability of the vehicle-mounted battery system 100 are ensured.
The support row 30 further includes a plurality of reinforcing beams 33, opposite ends of the reinforcing beams 33 are respectively connected with the adjacent cross beams 31 and the adjacent longitudinal beams 32, and extending directions of the reinforcing beams 33 are respectively disposed at angles with extending directions of the cross beams 31 and extending directions of the longitudinal beams 32.
In this embodiment, by adding a plurality of reinforcing beams 33 in the support row 30, opposite ends of the reinforcing beams 33 are respectively connected to the adjacent cross beams 31 and the adjacent longitudinal beams 32, and the extending directions of the reinforcing beams 33 are respectively disposed at an included angle with the extending directions of the cross beams 31 and the extending directions of the longitudinal beams 32, so that a firm triangular support structure is formed between the cross beams 31 and the longitudinal beams 32, thereby further enhancing the structural strength and rigidity of the whole support row 30. Specifically, the supporting force of the cross beam 31 and the longitudinal beam 32 is effectively enhanced by the reinforcing beam 33, the risk of loosening the structure caused by stress deformation or vibration is reduced, and the stability and the reliability of the supporting row 30 are remarkably improved. The structural design of the embodiment effectively solves the difficult problems of weak connection strength and easy deformation of the cross beam 31 and the longitudinal beam 32 in the traditional support structure, avoids displacement and shaking of the battery pack 20 caused by vibration or impact in the running process of the vehicle, ensures the running safety and stability of the battery system, and further realizes the remarkable improvement of the overall structural strength and safety performance of the vehicle-mounted battery system 100.
The in-vehicle battery system 100 includes a reinforcing bracket 60, and the reinforcing bracket 60 is connected to the shoe 10 and extends in a direction perpendicular to the shoe 10 to be connected to the support row 30. The reinforcement seats are located on both sides in the width direction of the battery pack 20, and form supporting functions for the battery pack 20 together with the support rows 30.
In the present embodiment, by providing the reinforcing stand 60 in the in-vehicle battery system 100, the reinforcing stand 60 is connected to the shoe 10 and extends in a direction perpendicular to the shoe 10 and is connected to the support row 30, so that the reinforcing stand 60 can cooperate with the support row 30 to form an effective support for the battery pack 20. Specifically, the reinforcing holders 60 are skillfully disposed at both sides of the width direction of the battery pack 20 and closely cooperate with the support rows 30 to share various loads generated during operation of the battery pack 20. The structural design remarkably improves the supporting strength of the battery pack 20 in the width direction, optimizes the stress distribution, and accordingly effectively prevents the battery pack 20 from being deformed or damaged due to external force factors such as vibration and impact during vehicle running.
The present embodiment solves the problems of insufficient support and easy shaking or deformation in the width direction of the battery pack 20 in the prior art by enhancing the cooperation of the support 60 and the support row 30, thereby improving the overall stability and safety of the installation structure of the battery pack 20, ensuring the reliability and service life of the battery system in the actual operation process, and finally realizing the remarkable improvement of the structural strength, stability and safety performance of the vehicle-mounted battery system 100.
The reinforcing support 60 includes a plurality of first support beams 61, a plurality of second support beams 62 and a plurality of third support beams 63, wherein the plurality of first support beams 61 are arranged at intervals, the plurality of second support beams 62 are arranged at intervals, opposite ends of the first support beams 61 are respectively connected with the second support beams 62, one of the first support beams 61 is connected with the base 10, the second support beams 62 are connected with the support row 30, opposite ends of the third support beams 63 are respectively connected with the first support beams 61 and the second support beams 62, and the extending direction of the third support beams 63 is respectively arranged at an included angle with the extending direction of the cross beam 31 and the extending direction of the longitudinal beam 32.
In this embodiment, through the above structural design, the third support beam 63 plays a role in supporting the reinforcing support 60 in an oblique direction, and firmly connects the first support beam 61 and the second support beam 62 together, so as to effectively form a stable triangular support structure, and the rigidity of the overall structure of the reinforcing support 60 is significantly enhanced. The structure design effectively solves the problems of insufficient rigidity and easy deformation or damage of the reinforced support 60 in the prior art, and improves the vibration resistance and impact resistance of the reinforced support 60, thereby further improving the connection stability of the collet 10 and the support row 30 and effectively avoiding the risks of displacement, shaking or structural damage of the battery pack 20 caused by vibration or impact in the running process of the vehicle.
In summary, the structural layout of the first, second and third support beams 63 is reasonably configured, so that the structural strength and stability of the reinforcing support 60 are significantly improved, and the overall structural strength, running stability and safety performance of the vehicle-mounted battery system 100 are effectively improved.
Referring to fig. 1 to 4, fig. 4 is a partially enlarged schematic illustration of a region a in fig. 2 according to an embodiment of the invention.
The vehicle-mounted battery system 100 comprises a fastener 40, wherein the fastener 40 is positioned in the battery pack 20 and is respectively connected with the battery pack 20 and the longitudinal beam 32, and a notch 201 exposing the fastener 40 is formed in the position of the battery pack 20 corresponding to the fastener 40. Fasteners 40 may connect battery pack 20 and support row 30 together, and indentations 201 may allow a worker to lock fasteners 40 by tools, fasteners 40 may be screws, rivets, or the like.
In the present embodiment, by providing the fastener 40 in the in-vehicle battery system 100, the fastener 40 is located inside the battery pack 20 and connected with the battery pack 20 and the side members 32, respectively, to achieve reliable connection between the battery pack 20 and the support row 30. Meanwhile, notches 201 are particularly provided at positions on the battery pack 20 corresponding to the fasteners 40 to expose the fasteners 40, so that a worker can more conveniently lock or unlock the fasteners 40 by a tool, such as screws or rivets, etc.
The structure design of the above technical scheme effectively solves the problem that the battery pack 20 is inconvenient to install and disassemble in the prior art. By exposing the fastener 40 through the notch 201, an operator can rapidly lock or disassemble the fastener 40 without complicated disassembly or adjustment, thereby simplifying the installation and maintenance processes of the battery pack 20 and remarkably improving the assembly efficiency and maintenance convenience. In addition, the battery pack 20 and the longitudinal beam 32 are firmly connected by the fasteners 40, so that the connection reliability between the battery pack 20 and the supporting structure is further enhanced, and the displacement or loosening phenomenon of the battery pack 20 caused by vibration or impact in the running process of the vehicle is avoided, thereby improving the overall structural stability and safety of the battery system.
In summary, the present embodiment improves the convenience of assembly and maintenance of the battery pack 20 by providing the notch 201 structure of the exposed fastener 40, and effectively improves the structural stability and safety performance of the vehicle-mounted battery system 100 during operation by utilizing the reliable connection characteristic of the fastener 40.
Referring to fig. 1 and 5, fig. 5 is an exploded view of a battery pack 20 according to an embodiment of the present invention.
The battery pack 20 comprises a box body 21, a plurality of single batteries 22 and a control system 23, wherein the box body 21 is provided with a containing cavity, the box body 21 is connected with the bottom support 10, the single batteries 22 are gradually arranged in the containing cavity from one end of the box body 21, which is close to the bottom support 10, to the other end to form a battery pack, the control system 23 is positioned at one end of the battery pack, which is far away from the bottom support, and the control system 23 is electrically connected with the battery pack.
The technical solution of the present embodiment achieves the following technical effects by arranging a plurality of unit batteries 22 in the accommodating cavity step by step from one end of the case 21 close to the shoe 10 to the other end, and arranging the control system 23 at one end of the battery pack far from the shoe, by the above structural design, firstly, the unit batteries 22 with larger weight are intensively arranged at the position of the case 21 close to the shoe 10, and the control system 23 with relatively lighter weight is arranged at the position far from the shoe 10. Thus, the battery pack 20 as a whole forms a "top-light-bottom-heavy" structural feature, which significantly lowers the center of gravity of the battery pack 20. The lower center of gravity helps to improve the stability of the battery pack 20 in applications such as vehicles, and reduce the risk of rollover of the vehicle during high-speed driving, cornering or bumpy road surfaces, thereby significantly improving the safety performance of the entire vehicle.
Secondly, the gradual arrangement of the single cells 22 ensures compact structure of the battery pack and facilitates heat dissipation, which is beneficial to prolonging the service life of the battery and simultaneously provides convenience for subsequent maintenance and replacement. In addition, the electrical connection of the control system 23 and the battery pack ensures real-time monitoring and effective management of the battery state, improving the operational reliability of the battery pack 20.
Therefore, by reasonable structural layout, the technical problems of high gravity center, unreasonable structural distribution and the like of the conventional battery pack 20 are effectively solved, and the comprehensive enhancement of the gravity center, remarkable structural stability and safety performance of the battery pack 20 is realized.
Further, the thickness of the case 21 is D, the height of the case 21 is H, and 4≤H/D≤8.
The present embodiment successfully shapes the flattened structure of the battery pack 20 by defining the thickness D and the height H of the case 21 such that 4≤h/d≤8, for example, 4, 5, 6, 7, 8, etc., specifically, by precisely controlling the ratio of the height to the thickness of the case 21.
The technical scheme effectively solves the problems that the prior battery pack 20 is too large in structural height, too small in thickness or unreasonable in ratio of height to thickness, so that the gravity center of the battery pack 20 is raised, the stability is lowered and the supporting structure is difficult to support efficiently. Specifically, the flattened design of the shape of the battery pack 20 can be more closely attached to the bottom support row 30 when mounted on a vehicle or other equipment, thereby achieving a better fitting effect. With the decrease in height and the appropriate increase in thickness of the battery pack 20, the spacing between adjacent support rows 30 is reduced, and the battery pack 20 can obtain more effective support of the support rows 30, thereby significantly improving the load-bearing capacity and structural stability of the battery pack 20 in the direction of force.
In addition, since the contact area between the flat battery pack 20 and the bottom support row 30 is increased, the battery pack 20 can disperse and absorb external force through the plurality of support rows 30 when being impacted or vibrated, thereby further improving the shock resistance and the use reliability of the battery pack 20.
In summary, the present technical solution smartly adjusts the ratio of the height and the thickness of the box 21, successfully realizes the flattened design of the battery pack 20, effectively solves the technical problems of the existing battery pack 20, such as lack of supporting force and insufficient structural stability, and further ensures that the battery pack 20 is firmly supported, has a more stable structure, and is more reliable to use.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear) in the embodiments of the present invention are merely used to explain the relative positional relationship between the components, the movement condition, and the like in a certain specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. The term "connected" may be used to refer to a direct connection between elements or an indirect connection via other intervening elements.
Furthermore, the description of the "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.