Battery tray, battery pack and vehicle

Abstract

A vehicle, comprising a battery tray and a battery pack. The battery tray comprises: a frame, which defines a space inside the battery tray; and a tray cross beam and a tray longitudinal beam, which are arranged inside the battery tray, wherein the tray cross beam is provided with a first snap-fit opening, the tray longitudinal beam is provided with a second snap-fit opening, and the first snap-fit opening in the tray cross beam is snap-fitted with the second snap-fit opening in the tray longitudinal beam, so as to divide the space inside the battery tray into a plurality of battery accommodating spaces.

Description

Battery trays, battery packs and vehicles

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed on July 26, 2023, with application number 202321991512.X and patent application name “Battery Tray, Battery Pack and Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of vehicle technology, and more specifically, to a battery tray, a battery pack, and a vehicle. Background Art

[0004] The battery tray's transverse beams and longitudinal beams need to intersect to separate the battery tray into multiple battery accommodating spaces. In the prior art, the battery tray's transverse beams or longitudinal beams need to be cut and then spliced ​​together, which reduces the structural strength.

[0005] Summary of the Invention

[0006] One purpose of this application is to provide a new technical solution for a battery tray, a battery pack and a vehicle.

[0007] To achieve the above-mentioned objectives, on the one hand, an embodiment of the present application provides a battery tray, comprising: a frame, which defines the space inside the battery tray; and a tray cross beam and a tray longitudinal beam arranged inside the battery tray; the tray cross beam has a first snap-in slot, and the tray longitudinal beam has a second snap-in slot, and the first snap-in slot of the tray cross beam is snap-fitted with the second snap-in slot of the tray longitudinal beam to separate the space inside the battery tray into multiple battery accommodating spaces.

[0008] The frame includes a longitudinal side beam of the pallet, the transverse beam of the pallet has a first exhaust cavity, the longitudinal side beam of the pallet has a second exhaust cavity, the first exhaust cavity is connected to the second exhaust cavity, the battery accommodating space inside the battery tray is connected to the first exhaust cavity, and the second exhaust cavity is connected to the space outside the battery tray.

[0009] Optionally, the first exhaust cavity includes a first cavity, a second cavity and a third cavity, the first cavity is connected to the third cavity through the second cavity, the width of the second cavity is smaller than the width of the first cavity, the width of the second cavity is also smaller than the width of the third cavity, and the first cavity is connected to the battery accommodating space.

[0010] Optionally, the pallet cross beam includes a first pallet cross beam and a second pallet cross beam, a first spacing space exists between the first cavity of the first pallet cross beam and the pallet longitudinal beam, and a second spacing space exists between the first cavity of the second pallet cross beam and the pallet longitudinal side beam.

[0011] Optionally, the first cavity of the first pallet cross beam extends to the pallet longitudinal side beam, and the first cavity of the second pallet cross beam extends to the pallet longitudinal beam.

[0012] Optionally, the longitudinal side beam of the tray has a first exhaust hole, and the first exhaust hole connects the battery accommodating space inside the battery tray with the second exhaust cavity.

[0013] Optionally, a distance between the first exhaust hole and a position where the first exhaust cavity communicates with the second exhaust cavity is smaller than a first threshold.

[0014] Optionally, the first exhaust cavity is connected below the first bayonet.

[0015] Optionally, the pallet cross beam and the pallet longitudinal beam are welded together at the connection point between the first latch and the second latch.

[0016] Optionally, the frame further includes a tray transverse side beam, and the tray transverse side beam is provided with an exhaust channel, and the exhaust channel connects the second exhaust cavity with the space outside the battery tray.

[0017] Optionally, the pallet transverse beam is further provided with a second exhaust hole, which connects the exhaust channel with the battery accommodating space of the battery tray.

[0018] On the other hand, an embodiment of the present application provides a battery pack, comprising: a battery and the battery tray as described above, wherein the battery is accommodated in a battery accommodating space of the battery tray.

[0019] On the other hand, an embodiment of the present application provides a vehicle equipped with the aforementioned battery pack.

[0020] The beneficial effect of the embodiment of the present application is that the battery tray cross beam and the battery tray longitudinal beam are connected by a snap-on method without the need for truncation, thereby ensuring a high structural strength.

[0021] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0023] FIG1 is a front view of a pallet longitudinal beam according to an embodiment of the present application.

[0024] FIG2 is a front view of a first pallet beam according to an embodiment of the present application.

[0025] FIG3 is a front view of a second pallet beam according to an embodiment of the present application.

[0026] FIG. 4 is a side view of a first pallet beam according to an embodiment of the present application.

[0027] FIG5 is a perspective view of a battery tray according to an embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Pallet longitudinal beam; 101. Second latch; 2. First pallet transverse beam; 201. First latch; 202. Third exhaust hole; 203. First cavity; 204. Second cavity; 205. Third cavity; 206. First spacing space; 207. First exhaust cavity; 3. Second pallet transverse beam; 301. First latch; 302. Third exhaust hole; 303. First cavity; 304. Second cavity; 305. Third cavity; 306. Second spacing space; 4. Pallet longitudinal side beam; 401. First exhaust hole; 402. Second exhaust cavity; 5. Pallet transverse side beam; 501. Exhaust channel; 502. Second exhaust hole; 6. Battery storage space. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0033] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] In the following description, the “longitudinal” direction refers to a direction from the front wheels to the rear wheels of the vehicle, and the “lateral” direction refers to a direction from the left wheel to the right wheel of the same axis of the vehicle.

[0035] Referring to Figures 1 to 5, the battery tray 100 includes a frame, which defines the space inside the battery tray 100. In other words, the frame serves as the boundary between the inside and outside of the battery tray 100. In this embodiment, the frame includes a pair of pallet longitudinal side beams 4 and pallet transverse side beams 5. The rectangular space enclosed by the connection of the pallet longitudinal side beams 4 and the pallet transverse side beams 5 is the interior of the battery tray 100. The frame can also include more side beams to surround shapes such as pentagons and hexagons, which are not specifically limited in this embodiment. The battery tray 100 also includes a pallet crossbeam and a pallet longitudinal beam 1, and the pallet crossbeam and the pallet longitudinal beam 1 are both arranged inside the battery tray 100. In this embodiment, there are two pallet crossbeams, namely the first pallet crossbeam 2 and the second pallet crossbeam 3, but in actual manufacturing, the number of pallet crossbeams and pallet longitudinal beams can be increased or decreased as needed. Taking the connection between the first pallet crossbeam 2 and the pallet longitudinal beam 1 as an example, the first pallet crossbeam 2 has a first snap-in notch 201, and the pallet longitudinal beam 1 has a second snap-in notch 101. The first snap-in notch 201 of the first pallet crossbeam 2 is engaged with the second snap-in notch 101 of the pallet longitudinal beam 1, thereby forming a cross-connection between the first pallet crossbeam 2 and the pallet longitudinal beam 1. This separates the space inside the battery tray 100 into multiple battery accommodating spaces 6. In this way, there is no need to cut off the first pallet crossbeam 2 or the pallet longitudinal beam 1, so the structural strength of the battery tray is better. Similarly, the first snap-in notch 301 of the second pallet crossbeam 3 is engaged with the other second snap-in notch 101 of the pallet longitudinal beam 1, and there is no need to cut off either. After the first pallet crossbeam 2, the second pallet crossbeam 3 and the pallet longitudinal beam 1 are engaged, multiple battery accommodating spaces 6 are separated on both sides of the pallet longitudinal beam 1.

[0036] Optionally, as shown in Figure 5 , the first pallet crossbeam 2 has a first vent cavity 207 and a third vent hole 202. The pallet longitudinal side beam 4 has a second vent cavity 402. The first vent cavity 207 of the first pallet crossbeam 2 communicates with the second vent cavity 402 of the pallet longitudinal side beam 4. The third vent hole 202 of the first pallet crossbeam 2 faces the battery accommodating space 6, connecting the battery accommodating space 6 within the battery tray 100 with the first vent cavity 207, while the second vent cavity 402 communicates with the space outside the battery tray 100. This connection can be achieved through vent holes or other suitable methods, such as partially opening the vent cavity. The vent path is indicated by the dashed arrow in Figure 5 . Once the batteries in the battery accommodating space 6 generate gas, the gas is discharged from the battery pack through the third vent hole 202, the first vent cavity 207, the second vent cavity 402, and the vent channel 501, thereby improving the safety of the battery pack. The communication mode between the second pallet cross beam 3 and the pallet longitudinal side beam 4 is similar to that of the first pallet cross beam 2 , and therefore will not be described in detail.

[0037] As can be seen from Figures 2 and 4, the first exhaust cavity 207 includes a first cavity 203, a second cavity 204, and a third cavity 205. The first cavity 203 and the third cavity 205 are connected through the second cavity 204. The width of the second cavity 204 is smaller than that of the first cavity 203, and the width of the second cavity 204 is also smaller than that of the third cavity 205. The first cavity 203 is connected to the battery accommodation space 6 through the third exhaust hole 202 or other suitable structure. The advantage of this structure is that the gas in the battery accommodation space 6 first enters the first cavity 203 and is then blocked at the second cavity 204. If the gas pressure entering the first cavity 203 through a third exhaust hole 202 is high, the gas will first be divided in the first cavity 203 before entering the third cavity 205 through the second cavity 204. This prevents the third cavity 205 from further squeezing the batteries in the battery accommodation space 6 due to excessive local pressure. 3 , the structures of the first cavity 303 , the second cavity 304 , and the third cavity 305 of the second pallet beam 3 are similar to those of the first pallet beam 2 , and therefore will not be described in detail.

[0038] As can be seen from Figures 2, 3, and 5, the difference between the first pallet crossbeam 2 and the second pallet crossbeam 3 is that the first cavity 203 of the first pallet crossbeam 2 decreases in length toward the ends at the first latch 201, while the first cavity 303 of the second pallet crossbeam 3 decreases in length toward the first latch 301 at both ends. Therefore, after the first and second pallet crossbeams 2, 3, and pallet longitudinal beams 1 are connected, a first spacing space 206 exists between the first cavity 203 of the first pallet crossbeam 2 and the pallet longitudinal beam 1, and a second spacing space 306 exists between the first cavity 303 of the second pallet crossbeam 3 and the pallet longitudinal side beam 4. To prevent gas leakage within the battery tray 100, the first cavity 203 of the first pallet crossbeam 2 is blocked at the first spacing space 206, and the first cavity 303 of the second pallet crossbeam 3 is blocked at the second spacing space 306 with a plug. Alternatively, the first cavity 203 of the first pallet crossbeam 2 can also serve as an open air intake structure at the first spacing space 206. Similarly, the first cavity 303 of the second pallet crossbeam 3 can also serve as an open air intake structure at the second spacing space 306 for gas to enter the battery accommodation space 6. In other words, for each battery accommodation space 6, the first spacing space 206 and the second spacing space 306 are arranged diagonally. The first spacing space 206 and the second spacing space 306 can be used for routing between the batteries in each battery accommodation space 6. Moreover, for the pallet longitudinal side beams 4, the first pallet crossbeam 2 and the second pallet crossbeam 3 have different exhaust cross sections at their connecting locations, which facilitates the formation of a pressure difference within the second exhaust cavity 401, making it easier for high-pressure gas to be discharged into the external environment of the battery pack.

[0039] More specifically, as can be seen from Figures 2 to 5 , the first cavity 203 of the first pallet crossbeam 2 extends to the pallet longitudinal side beam 4, while the first cavity 303 of the second pallet crossbeam 3 extends to the pallet longitudinal beam 1. This structure not only facilitates the formation of the pressure differential described above, but also maximizes the overall structural strength of the battery tray 100.

[0040] Alternatively, the first pallet cross beam 2 and the second pallet cross beam 3 are integrally formed by extrusion, which simplifies production and facilitates the formation of the various cavities described above. In actual production, plate bending and welding can also be used.

[0041] Optionally, as shown in FIG5 , the tray longitudinal side beam 4 has a first vent hole 401. The first vent hole 401 connects the battery accommodating space 6 within the battery tray 100 with the second vent cavity 402. This allows some gas to directly enter the second vent cavity 402 and then be discharged outside the battery pack.

[0042] Alternatively, as can be seen in Figures 2, 3, and 5, the distance between the first vent hole 401 and the location where the first vent cavity 207 communicates with the second vent cavity 402 is less than a first threshold value, which can be a suitable value such as 2 cm or 5 cm. In other words, the first vent hole 401 is closer to the connection between the first pallet crossbeam 2 (or the second pallet crossbeam 3) and the pallet longitudinal side beam 4, relative to both ends of the pallet longitudinal side beam 4. This facilitates gas concentration and convergence, preventing excessive gas leaks in the pallet longitudinal side beam 4. It also avoids a reduction in the structural strength of the pallet longitudinal side beam 4, which could squeeze the second vent cavity 402 and cause short venting, because the connection between the first pallet crossbeam 2 (or the second pallet crossbeam 3) and the pallet longitudinal side beam 4 has higher structural strength.

[0043] Below the first snap-in 201 of the second pallet crossbeam 2, the first exhaust cavity 207 is connected, so that the high-pressure gas generated by the batteries in the battery accommodating cavity 6 on both sides of the pallet longitudinal beam 1 can be discharged from two directions as shown by the dotted arrows in Figure 5, thereby improving the exhaust efficiency.

[0044] Optionally, the first pallet cross beam 2 is welded to the pallet longitudinal beam 1 at the junction between the first and second latches 201 and 101 to enhance the connection strength. The welding method for the second pallet cross beam 3 and the pallet longitudinal beam 1 is similar to that for the first pallet cross beam 2 and the pallet longitudinal beam 1 and will not be further described.

[0045] As can be seen from Figure 5, the battery tray 100 also includes a tray transverse beam 5. The tray transverse beam 5 is provided with an exhaust channel 501, which connects the second exhaust cavity 402 with the space outside the battery tray 100. A separate explosion-proof valve can be provided at the exhaust channel 501, or an explosion-proof valve can be formed by locally thinning the tray transverse beam 5. As shown in the gas flow path with an arrow dotted line in Figure 5, the gas generated by the battery in the battery accommodating space 6 enters the first cavity 203, the second cavity 204, and the third cavity 205 of the first exhaust cavity 207 through the third exhaust hole 202, and then enters the second exhaust cavity 402, and is then discharged to the external space of the battery tray 100 through the exhaust channel 501, thereby ensuring the normal air pressure in the battery pack.

[0046] The tray transverse side beam 5 is also provided with a second exhaust hole 502, which connects the exhaust channel 501 with the battery accommodating space 6 of the battery tray 100. In this way, part of the gas generated by the battery closest to the tray transverse side beam 5 can be directly discharged to the external space of the battery tray 100.

[0047] On the other hand, an embodiment of the present application provides a battery pack, comprising: a battery and the battery tray 100 as described above, wherein the battery is accommodated in the battery accommodation space 6 of the battery tray 100 .

[0048] On the other hand, an embodiment of the present application provides a vehicle equipped with the aforementioned battery pack or battery tray.

[0049] The battery pack and vehicle of the present application have good structural strength and safety.

[0050] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0051] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A battery tray, wherein: include: A frame, wherein the frame defines a space inside the battery tray; as well as A tray crossbeam and a tray longitudinal beam (1) arranged inside the battery tray; The pallet crossbeam is provided with a first snap-in opening, and the pallet longitudinal beam (1) is provided with a second snap-in opening (101), and the first snap-in opening of the pallet crossbeam is snap-connected with the second snap-in opening (101) of the pallet longitudinal beam (1) to separate the space inside the battery tray into a plurality of battery accommodating spaces (6).

2. The battery tray according to claim 1, wherein: The frame comprises a tray longitudinal side beam (4), the tray transverse beam has a first exhaust cavity, the tray longitudinal side beam (4) has a second exhaust cavity (402), the first exhaust cavity is connected to the second exhaust cavity (402), the battery accommodating space (6) inside the battery tray is connected to the first exhaust cavity, and the second exhaust cavity (402) is connected to the space outside the battery tray.

3. The battery tray according to claim 2, wherein: The first exhaust cavity includes a first cavity, a second cavity and a third cavity. The first cavity is connected to the third cavity through the second cavity. The width of the second cavity is smaller than the width of the first cavity. The width of the second cavity is also smaller than the width of the third cavity. The first cavity is connected to the battery accommodating space (6).

4. The battery tray according to claim 3, wherein: The pallet cross beam comprises a first pallet cross beam (2) and a second pallet cross beam (3), a first spacing space (206) exists between a first cavity of the first pallet cross beam (2) and the pallet longitudinal beam (1), and a second spacing space (306) exists between a first cavity of the second pallet cross beam (3) and the pallet longitudinal side beam (4).

5. The battery tray according to claim 4, wherein: The first cavity of the first pallet cross beam (2) extends to the pallet longitudinal side beam (4), and the first cavity of the second pallet cross beam (3) extends to the pallet longitudinal beam (1).

6. The battery tray according to any one of claims 2 to 5, wherein: The tray longitudinal side beam (4) has a first exhaust hole (401), and the first exhaust hole (401) connects the battery accommodating space (6) inside the battery tray with the second exhaust cavity (402).

7. The battery tray according to claim 6, wherein: The distance between the first exhaust hole (401) and a position where the first exhaust cavity is connected to the second exhaust cavity (402) is less than a first threshold value.

8. The battery tray according to any one of claims 2 to 7, wherein: The first exhaust cavity is connected below the first bayonet.

9. The battery tray according to any one of claims 1 to 8, wherein: At the junction between the first clamping opening and the second clamping opening (101), the pallet cross beam and the pallet longitudinal beam (1) are welded and connected.

10. The battery tray according to any one of claims 2 to 8, wherein: The frame further comprises a tray transverse side beam (5), wherein the tray transverse side beam (5) is provided with an exhaust channel (501), and the exhaust channel (501) connects the second exhaust cavity (402) with the space outside the battery tray.

11. The battery tray according to claim 10, wherein: The tray transverse side beam (5) is also provided with a second exhaust hole (502), and the second exhaust hole (502) connects the exhaust channel (501) with the battery accommodating space (6) of the battery tray.

12. A battery pack, wherein: include: A battery tray as claimed in any one of claims 1 to 11; as well as A battery is accommodated in a battery accommodation space (6) of the battery tray.

13. A vehicle, wherein: The vehicle is installed with a battery tray as described in any one of claims 1 to 11, or is installed with a battery pack as described in claim 12.

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