Tray of battery pack, battery pack and vehicle
By integrating the expansion beam with the side beam, the problems of low overall integration and space utilization in the battery pack tray are solved, achieving the effects of simplified assembly, enhanced rigidity and reduced weight.
Patent Information
- Application Number
- CN202520106415.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-16
AI Technical Summary
The way the expansion beam is connected to the side beam or the middle crossbeam in the battery pack tray results in low overall integration and low space utilization.
The expansion beam and side beam are integrated into a single unit, allowing for assembly in a single operation. The expansion beam and side beam fit together seamlessly. The expansion beam, made of composite materials, enhances rigidity and strength. Exhaust channels and storage space are provided within the tray to simplify assembly and reduce the number of parts.
It improves the integration and space utilization of the battery pack, simplifies the assembly process, enhances the rigidity and strength of the side beams, and reduces weight and the number of parts.
Smart Images
Figure CN223828609U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of battery pack manufacturing technology, and more particularly to a battery pack tray, a battery pack, and a vehicle. Background Technology
[0002] In related technologies, the connection between the expansion beam and the side beam or the middle cross beam in the tray of the battery pack is carried out after the side beam, the middle cross beam and other structures are assembled and connected. The expansion beam and the side beam are spaced apart, resulting in low overall integration of the tray and low space utilization. Utility Model Content
[0003] The purpose of this disclosure is to provide a battery pack tray, a battery pack, and a vehicle to solve the problems in the aforementioned related technologies.
[0004] To achieve the above objectives, one aspect of this disclosure provides a battery pack tray, comprising:
[0005] Side beams;
[0006] An expansion beam having a first side and a second side disposed opposite to each other, the first side of the expansion beam being connected to the side beam and at least partially abutting the inner sidewall of the side beam, and the second side of the expansion beam being oriented toward the battery module.
[0007] Optionally, the tray has a receiving space, the tray also includes an explosion-proof valve, the expansion beam is provided with an exhaust channel, the side beam is provided with an exhaust port, the explosion-proof valve is connected to the exhaust port, and the exhaust channel is connected to the exhaust port and the receiving space respectively.
[0008] Optionally, the expansion beam has a cavity, at least one end of the expansion beam is set as an open end and communicates with the cavity, a gap is provided between the open end of the expansion beam and the inner wall of the accommodating space, the gap is used to allow gas to enter the cavity through the open end of the expansion beam, and a through hole is provided on the first surface of the expansion beam, the through hole communicating with the cavity and the exhaust port.
[0009] Optionally, a reinforcing portion is provided within the cavity of the expansion beam, and the reinforcing portion extends along the first surface of the expansion beam toward the second surface of the expansion beam.
[0010] Optionally, the expansion beam is insulating, and the expansion beam is constructed as a composite beam, which is made of organic composite material.
[0011] Optionally, the expansion beam abuts against the battery module.
[0012] Optionally, the top of the expansion beam is provided with a plurality of wiring fixing holes, which are spaced apart along the length of the expansion beam, and the wiring fixing holes are used to constrain the wire harness.
[0013] Optionally, the tray further includes a central crossbeam connected to the side beams, the extension direction of the central crossbeam intersecting the extension direction of the side beams, and in the vertical direction, the top of the expansion beam is lower than the top of the central crossbeam, and the top of the expansion beam is lower than or equal to the top of the battery module, so that the top of the expansion beam is used to accommodate at least a portion of the electrical connectors.
[0014] Optionally, the inner wall of the side beam is provided with a groove, the expansion beam is connected to the groove, and a portion of the expansion beam protrudes from the opening of the groove.
[0015] Optionally, the inner wall of the side beam is provided with a screw hole, and the expansion beam is provided with a light hole. The axis of the light hole is perpendicular to the first and second surfaces of the expansion beam. The light hole is connected to the screw hole and allows the connecting bolt to pass through.
[0016] A second aspect of this disclosure also provides a battery pack, including a battery module and a tray for the battery pack described above, wherein the battery module is connected to the tray.
[0017] Optionally, the battery pack further includes a buffer element that is clamped between the expansion beam and the battery module.
[0018] A third aspect of this disclosure also provides a vehicle that includes the aforementioned battery pack tray, or includes the aforementioned battery pack.
[0019] The above technical solution integrates the expansion beam and the side beam, making them a single unit. During assembly, the expansion beam and the side beam can be assembled in one operation, simplifying the assembly process and improving the integration of the battery pack. At the same time, by fitting the first surface of the expansion beam to the inner wall of the side beam without any gaps, the rigidity and strength of the side beam can be improved, enhancing the overall mode of the battery pack. This also increases the capacity and improves space utilization.
[0020] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description
[0021] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:
[0022] Figure 1This is a partial perspective view of a tray according to one embodiment of the present disclosure.
[0023] Figure 2 This is a partial structural schematic diagram of a tray according to one embodiment of the present disclosure.
[0024] Figure 3 This is one embodiment of the present disclosure. Figure 2 A cross-sectional view of plane AA.
[0025] Figure 4 This is one embodiment of the present disclosure. Figure 2 A cross-sectional view of the BB plane.
[0026] Figure 5 This is a schematic diagram of the structure of a battery pack according to one embodiment of the present disclosure.
[0027] Explanation of reference numerals in the attached figures
[0028] 1. Side beams;
[0029] 2. Expansion beam; 21. Exhaust channel; 22. Gap; 23. Through hole; 24. Cable routing fixing hole; 25. Through hole; 26. Second side; 27. First side;
[0030] 3. Accommodation space;
[0031] 4. Explosion-proof valve;
[0032] 5. Middle beam;
[0033] 6. Connecting bolts;
[0034] 100. Tray; 101. Buffer; 102. Battery module. Detailed Implementation
[0035] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.
[0036] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the inner and outer parts of the relevant components. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0037] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0038] The battery pack contains battery modules, which are composed of multiple battery cells arranged in parallel. After the battery modules are installed in the tray, they need to be limited, buffered, and insulated. Currently, expansion beams are mainly used to limit the battery modules and absorb the expansion energy of the battery modules.
[0039] In related technologies, the connection between the expansion beam and the side beam or the middle cross beam in the tray of the battery pack is carried out after the side beam, the middle cross beam and other structures are assembled and connected. The expansion beam and the side beam are spaced apart, resulting in low overall integration of the tray and low space utilization.
[0040] Therefore, such as Figures 1-4 As shown, one aspect of this disclosure provides a battery pack tray 100, including a side beam 1 and an expansion beam 2.
[0041] The expansion beam 2 has a first surface 27 and a second surface 26 disposed opposite to each other. The first surface 27 of the expansion beam 2 is connected to the side beam 1 and at least partially abuts against the inner sidewall of the side beam 1. The second surface 26 of the expansion beam 2 is directed toward the battery module 102.
[0042] Among them, the side beam 1 is the side structure that constitutes the frame structure of the entire tray 100, and realizes the function of surrounding and protecting the entire battery module 102.
[0043] In the above technical solution, by integrating the expansion beam 2 with the side beam 1, the expansion beam 2 and the side beam 1 form a whole. During assembly, the expansion beam 2 and the side beam 1 can be assembled in one operation, which simplifies the assembly operation steps and improves the integration of the battery pack. At the same time, by attaching the first surface 27 of the expansion beam 2 to the inner side wall of the side beam 1 without gap 22 between them, the rigidity and strength of the side beam 1 can be improved, the overall mode of the battery pack can be improved, the capacity can be increased, and the space utilization rate can be improved.
[0044] The first surface 27 of the expansion beam 2 can be integrally formed with the side beam 1, or the first surface 27 of the expansion beam 2 can be connected to the side beam 1 by means of bonding, welding, screwing, etc.
[0045] Optionally, the expansion beam 2 is used to abut against the battery module 102. This abutment can be direct or indirect. Direct abutment means the expansion beam 2 directly contacts the battery module 102, generating a squeezing force on the battery module 102, which facilitates the stable arrangement of the battery module 102. Indirect abutment means the expansion beam 2 and the battery module 102 can contact each other through other components, such as a buffer 101. The buffer 101 can be located between the expansion beam 2 and the battery module 102, and the expansion beam 2 generates a squeezing force on the battery module 102 through the buffer 101, which also facilitates the stable arrangement of the battery module 102.
[0046] To reduce the number of components in the battery pack, optionally, in one embodiment of this disclosure, the tray 100 has a receiving space 3, the tray 100 also includes an explosion-proof valve 4, an exhaust channel 21 is provided in the expansion beam 2, an exhaust port is provided in the side beam 1, the explosion-proof valve 4 is connected to the exhaust port, and the exhaust channel 21 is connected to the exhaust port and the receiving space 3 respectively.
[0047] The housing space 3 is used to accommodate the battery module 102. The housing space 3 can be formed by multiple side beams 1 and a base plate, and the expansion beam 2 is also located within the housing space 3. The exhaust port on the side beam 1 can be equipped with an explosion-proof valve 4, which can exhaust gas. When the gas pressure in the housing space 3 increases, the gas can be discharged through the exhaust port and the explosion-proof valve 4. The exhaust channel 21 in the expansion beam 2 can guide the gas in the housing space 3 to the exhaust port. Therefore, it is not necessary to set up a separate exhaust pipe or guide pipe structure. The exhaust channel 21 can be directly set in the expansion beam 2, reducing the number of components and improving integration.
[0048] It is understandable that when the air pressure inside the containment space 3 increases, the gas is guided through the exhaust channel 21, and the gas inside the containment space 3 flows to the exhaust port through the exhaust channel 21 and is discharged through the explosion-proof valve 4.
[0049] Optionally, in one embodiment of this disclosure, the expansion beam 2 has a cavity, at least one end of the expansion beam 2 is configured as an open end and communicates with the cavity, a gap 22 is provided between the open end of the expansion beam 2 and the inner wall of the accommodating space 3, the gap 22 is used to allow gas to enter the cavity through the open end of the expansion beam 2, and a through hole 23 is provided on the first surface 27 of the expansion beam 2, the through hole 23 communicates with the cavity and the exhaust port. With this configuration, manufacturing costs can be further reduced, the cavity of the expansion beam 2 can both allow gas flow and allow the expansion beam 2 to absorb the expansion energy of the battery module 102.
[0050] A gap 22 is provided between the open end of the expansion beam 2 and the inner wall of the receiving space 3. This gap 22 allows communication between the cavity and the receiving space 3, enabling gas from the receiving space 3 to flow into the cavity. Meanwhile, the through hole 23 on the expansion beam 2 is connected to the exhaust port, allowing air from the cavity to flow to the exhaust port, thus guiding gas flow. It can be understood that after the first surface 27 of the expansion beam 2 is attached to the inner wall of the side beam 1, the through hole 23 and the exhaust port are directly opposite and connected, facilitating gas flow.
[0051] In some examples, one end of the expansion beam 2 is set as an open end, and a gap 22 is provided between the open end of the expansion beam 2 and the inner wall of the receiving space 3. In other examples, both ends of the expansion beam 2 are set as open ends, and a gap 22 is provided between the open ends of the expansion beam 2 and the inner wall of the receiving space 3. By attaching the first surface 27 of the expansion beam 2 to the inner side wall of the side beam 1, the open ends of the expansion beam 2 are not affected.
[0052] Optionally, in other embodiments, the expansion beam 2 has a cavity, the second surface 26 of the expansion beam 2 has an opening and communicates with the cavity, and the first surface 27 of the expansion beam 2 is provided with a through hole 23, which communicates with the cavity and the exhaust port. This allows the receiving space 3 to communicate with the cavity, enabling the gas in the receiving space to be discharged.
[0053] Optionally, in one embodiment of this disclosure, the first surface 27 of the expansion beam 2 is further provided with a flow guide port for guiding the gas between the expansion beam 2 and the side beam 1 to the cavity.
[0054] Optionally, in one embodiment of this disclosure, a reinforcing portion is provided within the cavity of the expansion beam 2, extending along the first surface 27 of the expansion beam 2 towards the second surface 26. This arrangement helps ensure the structural strength of the expansion beam 2 itself, while also facilitating the formation of a cavity within the expansion beam 2 and preventing the cavity from being compressed, thus achieving expansion energy absorption and gas flow guidance. In some examples, the reinforcing portion can be a reinforcing plate, resulting in a cross-sectional structure of the expansion beam 2 that is either H-shaped or I-shaped. In other examples, the reinforcing portion can be a reinforcing rib.
[0055] Optionally, in another embodiment of this disclosure, the first surface 27 of the expansion beam 2 is provided with a concave portion, which extends along the length direction of the expansion beam 2 and extends to the side wall of the expansion beam 2 and is open, thereby achieving communication with the receiving space 3. The concave portion is closed by the first surface 27 of the expansion beam 2 adhering to the inner side wall of the side beam 1. The concave portion is connected to the exhaust port, thereby forming an exhaust channel 21 to achieve gas guidance.
[0056] Alternatively, in one embodiment of this disclosure, the expansion beam 2 is insulating.
[0057] Optionally, the expansion beam 2 is constructed as a composite beam made of organic composite materials. This design allows the composite beam to possess inherent insulation properties, eliminating the need for structures such as plastic separators and / or insulating films. This further reduces the number of components and improves the integration and weight of the resulting battery pack.
[0058] The composite beam can be modified from glass fiber and resin and pultruded. Its tensile strength and bending strength are greater than those of aluminum alloy, and its density is lower than that of aluminum alloy. Under the same expansion force performance, the weight can be reduced by at least half, which can greatly reduce the weight of the battery pack and reduce the number of parts.
[0059] Of course, in other embodiments, the expansion beam 2 can also be made of aluminum alloy.
[0060] Optionally, in one embodiment of this disclosure, the top of the expansion beam 2 is provided with a plurality of wiring fixing holes 24. The plurality of wiring fixing holes 24 are spaced apart along the length direction of the expansion beam 2. The wiring fixing holes 24 are used to constrain the wire harness so that the wire harness is fixed to the top of the expansion beam 2 and extends along the length direction of the expansion beam 2. By providing wiring fixing holes 24, the wire harness can be constrained to the top of the expansion beam 2, which can reduce the occupation of the accommodating space 3 by the wire harness routing, while ensuring the neatness of the wire harness routing.
[0061] The wiring fixing hole 24 can be equipped with a wire clamp, which is securely mounted on the wire harness. The wire clamp connects to the wiring fixing hole 24, thus fixing the wire harness to the top of the expansion beam 2. In some examples, multiple wiring fixing holes 24 are designed as holes directly opened from the top of the expansion beam 2, and the multiple wiring fixing holes 24 can be set at equal intervals to provide uniform constraint on the wire harness.
[0062] Optionally, in one embodiment of this disclosure, the tray 100 further includes a central crossbeam 5 connected to the side beams 1. The extension direction of the central crossbeam 5 intersects the extension direction of the side beams 1. In the vertical direction, the top of the expansion beam 2 is lower than the top of the central crossbeam 5, and the top of the expansion beam 2 is lower than or equal to the top of the battery module 102, so that the top of the expansion beam 2 is used to accommodate at least a portion of the electrical connectors. This arrangement facilitates the placement of copper busbars and the extension of their high and low voltage harnesses, avoids the copper busbars occupying excessive space in the height direction of the battery pack, and reduces the overall height of the battery pack.
[0063] In some examples, the middle crossbeam 5 is used to divide the accommodating space 3 into two parts, which are used to place the battery module 102 respectively. Expansion beams 2 are provided at both ends of the middle crossbeam 5.
[0064] Optionally, in one embodiment of this disclosure, the inner wall of the side beam 1 is provided with a groove, the expansion beam 2 is connected to the groove, and part of the expansion beam 2 protrudes out of the groove opening.
[0065] The groove allows the expansion beam 2 to be embedded, further reducing space occupancy. In the direction perpendicular to the expansion beam 2, this reduces space occupancy by at least 20mm. Simultaneously, the embedded design of the expansion beam 2 does not affect the structural strength of the side beam 1. A portion of the expansion beam 2 protrudes from the groove opening, facing the battery module 102, thus absorbing the expansion energy of the battery module 102. In some examples, the size of the groove can be slightly larger than the size of the expansion beam 2, facilitating the connection of the expansion beam 2 within the groove.
[0066] Optionally, in one embodiment of this disclosure, the side beam 1 and the expansion beam 2 are threaded together. This arrangement facilitates the connection and fixation of the expansion beam 2 and the side beam 1, promotes their integrated design, and eliminates the need for pre-reserved welding space between the side beam 1 and the expansion beam 2, further reducing space occupancy.
[0067] Optionally, in one embodiment of this disclosure, the inner sidewall of the side beam 1 is provided with a screw hole, and the expansion beam 2 is provided with a light hole 25. The axis of the light hole 25 is perpendicular to the first surface 27 and the second surface 26 of the expansion beam 2. The light hole 25 is connected to the screw hole and allows the connecting bolt 6 to pass through.
[0068] The connecting bolt 6 can pass through the aperture 25 and engage with the threaded hole, thereby connecting and fixing the expansion beam 2 to the side beam 1. In some examples, the aperture 25 includes a first aperture and a second aperture. The first aperture is located on the first surface 27, and the second aperture is located on the second surface 26. The diameter of the second aperture is larger than that of the first aperture. The second aperture allows the connecting bolt 6 to extend into the cavity of the expansion beam 2 and fit against the inner wall of the cavity. The diameter of the second aperture is slightly larger than that of the nut of the connecting bolt 6, and the diameter of the first aperture is slightly larger than that of the stud of the connecting bolt 6. It can be understood that the second aperture can also allow gas in the containment space to enter the cavity, thus achieving exhaust.
[0069] Optionally, multiple light holes 25 can be provided in both the length and width directions of the expansion beam 2, with the light holes 25 spaced apart. Correspondingly, multiple screw holes are provided on the inner sidewall of the side beam 1, with the screw holes spaced apart. Each light hole 25 corresponds to one screw hole, and a connecting bolt 6 is provided for each light hole 25 and each screw hole to achieve connection. It should be noted that the spacing between the multiple light holes 25 can be set according to actual needs, and the multiple screw holes are correspondingly arranged.
[0070] Alternatively, in another embodiment of this disclosure, the side beam 1 is bonded to the first surface 27 of the expansion beam 2. This arrangement facilitates the connection and fixation of the expansion beam 2 and the side beam 1, promotes their integrated design, and eliminates the need for pre-reserved welding space between the side beam 1 and the expansion beam 2, further reducing space occupancy.
[0071] like Figure 5 As shown, a second aspect of this disclosure also provides a battery pack, including a battery module 102 and a tray 100 of the battery pack, wherein the battery module 102 is connected to the tray 100.
[0072] Optionally, in one embodiment of this disclosure, the battery pack further includes a buffer 101, which is clamped between the expansion beam 2 and the battery module 102. The buffer 101 can protect the battery module 102. The buffer 101 can be made of foam.
[0073] A third aspect of this disclosure also provides a vehicle that includes the tray 100 of the battery pack described above, or that includes the battery pack described above.
[0074] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.
[0075] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.
[0076] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.
Claims
1. A tray for a battery pack, characterized in that, include: Side beams; An expansion beam having a first side and a second side disposed opposite to each other, the first side of the expansion beam being connected to the side beam and at least partially abutting the inner sidewall of the side beam, and the second side of the expansion beam being oriented toward the battery module.
2. The battery pack tray according to claim 1, characterized in that, The tray has a receiving space and also includes an explosion-proof valve. The expansion beam is provided with an exhaust channel, and the side beam is provided with an exhaust port. The explosion-proof valve is connected to the exhaust port, and the exhaust channel is connected to both the exhaust port and the receiving space.
3. The battery pack tray according to claim 2, characterized in that, The expansion beam has a cavity, and at least one end of the expansion beam is set as an open end and communicates with the cavity. A gap is provided between the open end of the expansion beam and the inner wall of the accommodating space. The gap is used to allow gas to enter the cavity through the open end of the expansion beam. A through hole is provided on the first surface of the expansion beam. The through hole communicates with the cavity and the exhaust port.
4. The tray of the battery pack according to claim 3, characterized in that, A reinforcing part is provided inside the cavity of the expansion beam, and the reinforcing part extends along the first surface of the expansion beam toward the second surface of the expansion beam.
5. The tray of the battery pack according to claim 1, characterized in that, The expansion beam is insulating and is constructed as a composite beam, which is made of organic composite materials.
6. The tray of the battery pack according to claim 1, characterized in that, The expansion beam abuts against the battery module.
7. The tray of the battery pack according to claim 1, characterized in that, The top of the expansion beam is provided with multiple wiring fixing holes, which are spaced apart along the length of the expansion beam. The wiring fixing holes are used to constrain the wire harness.
8. The tray of the battery pack according to claim 1, characterized in that, The tray also includes a central crossbeam connected to the side beams, the extension direction of the central crossbeam intersecting the extension direction of the side beams, and in the vertical direction, the top of the expansion beam is lower than the top of the central crossbeam, and the top of the expansion beam is lower than or equal to the top of the battery module, so that the top of the expansion beam is used to accommodate at least a portion of the electrical connectors.
9. The tray of the battery pack according to claim 1, characterized in that, The inner wall of the side beam is provided with a groove, the expansion beam is connected to the groove, and part of the expansion beam protrudes out of the groove opening.
10. The tray of the battery pack according to claim 1, characterized in that, The inner wall of the side beam is provided with screw holes, and the expansion beam is provided with light holes. The axis of the light holes is perpendicular to the first and second surfaces of the expansion beam. The light holes are connected to the screw holes and allow connecting bolts to pass through.
11. A battery pack, characterized in that, It includes a battery module and a tray for a battery pack as described in any one of claims 1-10, wherein the battery module is connected to the tray.
12. The battery pack according to claim 11, characterized in that, The battery pack also includes a buffer element that is clamped between the expansion beam and the battery module.
13. A vehicle, characterized in that, The tray includes the battery pack as described in any one of claims 1-10, or the battery pack as described in claim 11 or 12.