Battery tray, battery and electric equipment

Abstract

The utility model relates to a battery tray, a battery and electric equipment. The battery tray comprises a bottom plate; the side beams are used for enclosing a mounting cavity together with the bottom plate, and the mounting cavity is used for mounting a battery cell assembly; the exhaust beam extends in the length direction of the side beam and is fixed to the side beam, a first exhaust channel is formed in the exhaust beam, the first exhaust channel is provided with an exhaust port, the exhaust port is formed in the end of the exhaust beam, the first exhaust channel is communicated with the mounting cavity, and the exhaust port is communicated with the side beam. And the first exhaust channel is communicated with the external space of the battery tray through the exhaust port. The battery tray provided by the utility model not only can reduce the occupied space of the exhaust channel in the battery, but also can improve the structural strength of the battery.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and more particularly, to a battery tray, a battery, and an electrical device. Background Art

[0002] With the rapid development of new energy vehicles, batteries are gradually developing towards the integration direction of CTP (Cell to Pack) to CTB (Cell to Body), and the energy density of batteries is getting higher and higher. When a battery undergoes thermal runaway, the flammable and explosive gases generated by the battery cells will relieve pressure through the explosion-proof valve. In order to prevent the internal heat of the battery from not diffusing with the high-temperature gas, it is particularly important to design an efficient exhaust channel. However, the exhaust channels of the batteries designed in the related art need to occupy a large space inside the battery and are prone to deformation after collision. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a battery tray, a battery, and an electrical device. The battery tray can not only reduce the space occupied by the exhaust channel inside the battery, but also improve the structural strength of the battery.

[0004] To achieve the above object, the present disclosure provides a battery tray, including: a bottom plate; side beams, the side beams are used to jointly enclose an installation cavity with the bottom plate, and the installation cavity is used to install a battery cell assembly; and an exhaust beam, the exhaust beam extends along the length direction of the side beam and is fixed to the side beam, the exhaust beam is formed with a first exhaust channel, the first exhaust channel has an exhaust port, the exhaust port is opened at an end of the exhaust beam, the first exhaust channel communicates with the installation cavity, and the first exhaust channel communicates with the external space of the battery tray through the exhaust port.

[0005] Optionally, the side beam includes a first side beam and a second side beam arranged at an angle, the exhaust beam is parallel to the first side beam and fixed to the first side beam, the exhaust port is opposite to the second side beam, and there is a gap between the exhaust port and the second side beam.

[0006] Optionally, the first exhaust channel further has an air inlet, the air inlet is opened on a side wall of the exhaust beam and communicates with the installation cavity.

[0007] Optionally, the ratio of the first projection of the exhaust port in the length direction of the exhaust beam to the second projection of the air inlet in the width direction of the exhaust beam is 0.6 to 1.

[0008] Optionally, the battery tray further includes a partition beam and a plugging member. The partition beam is connected between the two first side beams, and the partition beam divides the installation cavity into two sub-installation cavities. The two ends of the exhaust beam are respectively provided with the exhaust ports. The number of the air inlet ports is two and they are respectively located on both sides of the partition beam. The two air inlet ports are respectively communicated with the two sub-installation cavities. The plugging member is arranged in the first exhaust passage and blocks the communication between the two air inlet ports.

[0009] Optionally, the distance between the exhaust port and the second side beam is L, and the distance between the exhaust port and the plugging member is L1. Wherein, the ratio between L and L1 is 0.03 to 0.08.

[0010] Optionally, the distance L between the exhaust port and the second side beam is 30 mm to 60 mm.

[0011] Optionally, a first explosion-proof valve is provided on the second side beam, and the first explosion-proof valve is communicated with the exhaust port.

[0012] Optionally, the exhaust beam is configured as a hollow beam and has a first hollow cavity and a second hollow cavity that are mutually partitioned. The first hollow cavity and the second hollow cavity are arranged one above the other in the height direction of the exhaust beam, and the first hollow cavity serves as the first exhaust passage.

[0013] Optionally, the second hollow cavity is provided with a first reinforcing rib, and the first reinforcing rib extends along the length direction of the hollow beam.

[0014] Optionally, the first exhaust passage has a cross-section perpendicular to its own axis, and the area of the cross-section is greater than or equal to 560 mm 2 .

[0015] Optionally, the exhaust beam and the side beam are an integral part.

[0016] Optionally, the side beam is configured as a hollow beam and is provided with a second reinforcing rib, and the second reinforcing rib extends along the length direction of the side beam.

[0017] Based on the above technical solutions, the present disclosure further provides a battery, and the battery includes a battery cell assembly and the above battery tray, and the battery cell assembly is installed in the installation cavity of the battery tray.

[0018] Based on the above technical solutions, the present disclosure further provides an electrical device, and the electrical device includes the above battery.

[0019] Through the above technical solution, in the battery tray provided by the present disclosure, when the battery cell assembly undergoes thermal runaway or there is thermal diffusion between the battery cells, the released high-temperature electrolyte vapor (mixed with combustible gases such as hydrogen and carbon monoxide) can flow along the first exhaust passage and be discharged to the outside of the battery tray through the exhaust port, thereby relieving pressure to avoid battery explosion and ensuring the safe use of the battery.

[0020] In the above process, the first exhaust passage is independently arranged in the exhaust beam outside the side beam, and the exhaust beam is fixedly arranged on the side beam. This can not only improve the structural strength of the side beam to improve the mechanical structural strength of the battery tray, thereby improving the mechanical structural strength of the battery. Moreover, fixedly arranging the exhaust beam on the side beam also helps to reduce the overall volume of the battery, thereby improving the energy density of the battery. In addition, extending the exhaust beam along the length direction of the side beam, that is, arranging it parallel to the side beam, can also optimize the exhaust path of the first exhaust passage formed in the exhaust beam, so that the high-temperature electrolyte vapor released from the battery cell assembly can be discharged along a straight path. In this way, the exhaust path of the high-temperature electrolyte vapor can be shortened, and the high-temperature electrolyte vapor released from the battery cell assembly can be quickly discharged from the first exhaust passage. At the same time, opening the exhaust port at the end of the exhaust beam can shorten the communication path between the exhaust port and the external space of the battery tray, that is, shorten the exhaust path of the high-temperature electrolyte vapor from the exhaust port to the external space, which is further conducive to the rapid discharge of the high-temperature electrolyte vapor.

[0021] Therefore, the battery tray provided by the present disclosure can not only improve the mechanical strength and energy density of the battery, but also quickly discharge the high-temperature electrolyte vapor released from the battery cell assembly, thereby ensuring the safe use of the battery.

[0022] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0024] Figure 1 is a schematic structural diagram of the battery tray of the present disclosure, in which the battery cell assembly is shown;

[0025] Figure 2 is Figure 1 a partial enlarged view of part A in

[0026] Figure 3 is another schematic structural diagram of the battery tray of the present disclosure, in which the battery cell assembly is shown;

[0027] Figure 4 isFigure 3 Cross-sectional view taken along line B-B;

[0028] Figure 5 is Figure 4 Partial enlarged view at C in;

[0029] Figure 6 Schematic structural diagram of the side beam and the exhaust beam in the battery tray of the present disclosure.

[0030] Description of reference numerals

[0031] 1 - Bottom plate; 3 - Side beam; 31 - First side beam; 32 - Second side beam; 33 - First explosion-proof valve; 34 - Second reinforcing rib; 4 - Installation cavity; 41 - Sub-installation cavity; 5 - Battery cell assembly; 51 - Second explosion-proof valve; 6 - Exhaust beam; 61 - First hollow cavity; 611 - First exhaust passage; 611a - Exhaust port; 611b - Intake port; 62 - Second hollow cavity; 621 - First reinforcing rib; 7 - Sealing member; 8 - Partition beam; 9 - Second exhaust passage; 10 - Third exhaust passage. Detailed implementation manners

[0032] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0033] In the present disclosure, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" generally refer to the upper, lower, top, and bottom in the direction of gravity during actual use. In addition, "inside, outside" refer to "inside, outside" relative to the contour of the corresponding component itself. In addition, the terms "first", "second", "third", etc. used in the present disclosure are used to distinguish one element from another element, and do not have sequentiality and importance. In addition, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only for explaining and illustrating the present disclosure, and should not be construed as a limitation to the present disclosure.

[0034] The present disclosure provides a battery tray, referring to Figures 1 to 6As shown in the figure, the battery tray includes: a bottom plate 1; side beams 3 that are used to jointly enclose an installation cavity 4 with the bottom plate 1, and the installation cavity 4 is used to install the battery cell assembly 5; and an exhaust beam 6. The exhaust beam 6 extends along the length direction of the side beam 3, that is, is arranged parallel to the side beam 3 and fixed to the side beam 3. The exhaust beam 6 is formed with a first exhaust channel 611. The first exhaust channel 611 can penetrate along the length direction of the exhaust beam 6. There is an exhaust port 611a on the first exhaust channel 611. The exhaust port 611a is opened at the end of the exhaust beam 6. The first exhaust channel 611 communicates with the installation cavity 4, and the first exhaust channel 611 communicates with the external space of the battery tray through the exhaust port 611a. Among them, the exhaust port 611a can be constructed in any suitable shape, and the present disclosure does not limit this. Exemplarily, the shape of the exhaust port 611a can be square, circular or oval, etc.

[0035] Through the above technical solution, in the battery tray provided by the present disclosure, when the battery cell assembly 5 undergoes thermal runaway or there is thermal diffusion between them, the released high-temperature electrolyte vapor (which contains combustible gases such as hydrogen and carbon monoxide) can flow along the first exhaust channel 611 and be discharged to the outside of the battery tray through the exhaust port 611a, thereby relieving pressure to avoid battery explosion and ensuring the safe use of the battery.

[0036] In the above process, the first exhaust channel 611 is independently arranged in the exhaust beam 6 outside the side beam 3, and the exhaust beam 6 is fixed to the side beam 3. This can not only improve the structural strength of the side beam 3 to improve the mechanical structural strength of the battery tray, thereby improving the mechanical structural strength of the battery. Moreover, fixing the exhaust beam 6 to the side beam 3 also helps to reduce the overall volume of the battery, thereby increasing the energy density of the battery. In addition, arranging the exhaust beam 6 parallel to the side beam 3 can also optimize the exhaust path of the first exhaust channel 611 formed in the exhaust beam 6, so that the high-temperature electrolyte vapor released from the battery cell assembly 5 can be discharged along a straight path. In this way, the discharge path of the high-temperature electrolyte vapor can be shortened, and the high-temperature electrolyte vapor released from the battery cell assembly 5 can be quickly discharged from the first exhaust channel 611. At the same time, opening the exhaust port 611a at the end of the exhaust beam 6 can shorten the communication path between the exhaust port 611a and the external space of the battery tray, that is, shorten the discharge path of the high-temperature electrolyte vapor from the exhaust port 611a to the external space, which is further conducive to the quick discharge of the high-temperature electrolyte vapor.

[0037] Therefore, the battery tray provided by the present disclosure can not only improve the mechanical strength and energy density of the battery, but also quickly discharge the high-temperature electrolyte vapor released by the battery cell assembly 5, thereby ensuring the safe use of the battery.

[0038] It should be noted that the statement in the present disclosure that "the exhaust port 611a is opened at the end of the exhaust beam 6" means that the exhaust port 611a is opened on the exhaust beam 6, and the opening position of the exhaust port 611a on the exhaust beam 6 is opposite to the side surface of the adjacent other side beam 3.

[0039] In the exemplary embodiment provided by the present disclosure, referring to Figure 1 , Figure 3 and Figure 6 as shown, the side beam 3 includes a first side beam 31 and a second side beam 32 arranged at an angle. The included angle between the first side beam 31 and the second side beam 32 can be 90°. The exhaust beam 6 is parallel to the first side beam 31 and fixed to the first side beam 31. The exhaust port 611a is opposite to the second side beam 32. Among them, there is a gap between the exhaust port 611a and the side beam 3. The length L of this gap needs to be reasonably designed. Because if L is too small, it will cause poor circulation of the high-temperature electrolyte vapor, thus affecting the flow rate. And if L is too large, it will cause too long a circulation path for the high-temperature electrolyte vapor, which will also affect the flow rate. In addition, if L is too large, it will also occupy a large space inside the battery, which is not conducive to improving the energy density of the battery. Therefore, considering the influence of L on the flow rate of the high-temperature electrolyte vapor and the energy density of the battery comprehensively, the distance L between the exhaust port 611a and the side beam 3 can be designed to be 30 mm to 60 mm. Exemplarily, L here can be 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm or 60 mm, or any suitable size within the numerical range of 30 mm to 60 mm. It can be specifically selected flexibly according to the actual situation, and the present disclosure does not limit this.

[0040] In the exemplary embodiment provided by the present disclosure, referring to Figure 2 as shown, the first exhaust passage 611 further has an air inlet 611b. Among them, in order to facilitate the connection between the air inlet 611b and the installation cavity 4, it can be set that the air inlet 611b is opened on the side wall of the exhaust beam 6 and communicates with the installation cavity 4. Here, the air inlet 611b can be constructed in any suitable shape, and the present disclosure does not limit this. Exemplarily, the shape of the air inlet 611b can be square, circular or oval, etc.

[0041] In the exemplary embodiment provided by the present disclosure, referring to Figure 1 and Figure 6 as shown, a first explosion-proof valve 33 can be provided on the second side beam 32. The first explosion-proof valve 33 is communicated with the exhaust port 611a. Through such a setting, when the battery cell assembly has a thermal runaway or there is thermal diffusion between each other, the released high-temperature electrolyte vapor can blow open the first explosion-proof valve 33 when the internal pressure of the battery reaches a certain threshold, so as to relieve pressure and avoid the explosion of the battery, ensuring the safe use of the battery.

[0042] In the exemplary embodiments provided by the present disclosure, reference is made to Figure 2 and Figure 6 As shown, since the first explosion-proof valve 33 needs to be opened under the action of sufficient gas pressure, it is necessary to reasonably control the sizes of the exhaust port 611a and the intake port 611b so as to facilitate the smooth discharge of the high-temperature electrolyte vapor. Specifically, the ratio of the projected area of the first projection of the exhaust port 611a in the length direction of the exhaust beam 6 to the projected area of the second projection of the intake port 611b in the width direction of the exhaust beam 6 can be set to 0.6 to 1. Exemplarily, the ratio of the projected area of the first projection to the projected area of the second projection can be 0.6, 0.7, 0.8, 0.9 or 1, or any suitable ratio within the range of 0.6 to 1. Specifically, it can be flexibly selected according to the actual situation, and the present disclosure does not limit this.

[0043] In the exemplary embodiments provided by the present disclosure, reference is made to Figure 1 , Figure 2 and Figure 6 As shown, the battery tray further includes a partition beam 8 and a plugging member 7. The partition beam 8 is connected between two first side beams 31. The partition beam 8 divides the installation cavity 4 into two sub-installation cavities 41. Exhaust ports 611a are respectively provided at two ends of the exhaust beam 6. The number of intake ports 611b is two and they are respectively located on both sides of the partition beam 8. The two intake ports 611b are respectively communicated with the two sub-installation cavities 41. The plugging member 7 is arranged in the first exhaust passage 611 and blocks the communication between the two intake ports 611b. Through such a setting, it can be ensured that the high-temperature electrolyte vapor released when the battery cell assemblies 5 provided in each sub-installation cavity 41 undergo thermal runaway is discharged through their respective first exhaust passages 611, avoiding the mutual penetration of the high-temperature electrolyte vapor released when the battery cell assemblies 5 in two adjacent sub-installation cavities 41 undergo thermal runaway, resulting in the expansion of the thermal runaway range and affecting the use safety of the battery.

[0044] In the above embodiments, the plugging member 7 for blocking the communication between the two intake ports 611b can be constructed in any suitable manner, and the present disclosure does not limit this. Exemplarily, the plugging member 7 can be a rubber member that can reliably block the communication between the two intake ports 611b through its own elasticity, or a metal member that can reliably block the communication between the two intake ports 611b through welding. Among them, when the exhaust beam 6 is formed by an extrusion method and the plugging member 7 is a rubber member or a metal member, in order to use the plugging member 7 to block the two intake ports 611b of the first exhaust passage 611, it is necessary to first cut off the part of the exhaust beam 6 between the two intake ports 611b, and then place a rubber member of a suitable size or weld a metal member of a suitable size through the cut position in the first exhaust passage 611 to block the two intake ports 611b.

[0045] In the exemplary embodiments provided by the present disclosure, referring to Figure 1 and Figure 3 as shown, the length between the exhaust port 611a and the plugging member 7 can be set as L1, that is, the length of the first exhaust passage 611 corresponding to each sub-installation cavity 41 can be set as L1. Among them, the ratio of L to L1 can be 0.03 - 0.08. Through such a setting, on the one hand, the ratio of L to L1 can be controlled within a small range so that the exhaust port 611a can be closer to the second side beam 32, which can improve the exhaust efficiency and enable the high-temperature electrolyte vapor discharged from the exhaust port 611a to quickly pass through the first explosion-proof valve 33 provided on the second side beam 32 and be discharged to the external space of the battery tray, thereby relieving pressure and ensuring the safe use of the battery. On the other hand, this can also avoid the poor flow of the high-temperature electrolyte vapor in the path from the exhaust port 611a to the first explosion-proof valve 33 due to too small a ratio between L and L1, thus affecting the exhaust efficiency. Exemplarily, the ratio of L to L1 here can be 0.03, 0.04, 0.05, 0.06, 0.07 or 0.08, or any suitable value between 0.03 - 0.08. It can be specifically selected flexibly according to the actual situation, and the present disclosure does not limit this.

[0046] In the exemplary embodiments provided by the present disclosure, referring to Figure 4 and Figure 5 as shown, in order to reduce the self-weight, the exhaust beam 6 can be configured as a hollow beam and has a first hollow cavity 61 and a second hollow cavity 62 that are mutually partitioned. Among them, since the high-temperature electrolyte vapor expands in volume and decreases in density after being heated and usually moves upward, the first hollow cavity 61 can be set above the second hollow cavity 62 and used as the first exhaust passage 611, that is, the first hollow cavity 61 and the second hollow cavity 62 can be arranged up and down in the height direction of the exhaust beam 6, and the first hollow cavity 61 is used as the first exhaust passage 611.

[0047] In the exemplary embodiments provided by the present disclosure, referring to Figure 5 as shown, in order to improve the structural strength of the exhaust beam 6 and thus improve the mechanical structural strength of the battery, a first reinforcing rib 621 can be provided in the second hollow cavity 62, and the first reinforcing rib 621 extends along the length direction of the hollow beam. Among them, setting the first reinforcing rib 621 to extend along the length direction of the hollow beam is mainly considered from two aspects. On the one hand, because the exhaust beam 6 is a slender structure, the structural strength of the exhaust beam 6 needs to be improved in the length direction through the setting of the first reinforcing rib 621. On the other hand, because the forming method adopted by the hollow beam is the extrusion method.

[0048] In the exemplary embodiments provided by the present disclosure, referring to Figure 5 and Figure 6As shown, the first exhaust passage 611 has a cross-section perpendicular to its own axis. In order to ensure the smooth discharge of high-temperature flue gas, the area of the cross-section can be set to be greater than or equal to 560 mm 2 . Exemplarily, the area of the cross-section can be 560 mm 2 , 570 mm 2 , 580 mm 2 , 590 mm 2 or 600 mm 2 , or any suitable size greater than or equal to 560 mm 2 . Specifically, it can be flexibly selected according to the actual situation, and the present disclosure does not limit this.

[0049] In the exemplary embodiment provided by the present disclosure, the exhaust beam 6 can be fixed to the side beam 3 in any suitable manner. For example, the exhaust beam 6 can be fixed to the side beam 3 by welding, bonding, or integral molding, etc. Specifically, it can be flexibly selected according to the actual situation, and the present disclosure does not limit this. Optionally, referring to Figures 1 to 6 as shown, the exhaust beam 6 and the side beam 3 are constructed as an integral part by an extrusion method.

[0050] In the exemplary embodiment provided by the present disclosure, referring to Figure 5 and Figure 6 as shown, in order to have a relatively high structural strength while reducing its own weight, the side beam 3 can be constructed as a hollow beam and provided with a second reinforcing rib 34, and the second reinforcing rib 34 extends along the length direction of the side beam 3. Among them, the second reinforcing rib 34 extending along the length direction of the side beam 3 helps to improve the structural strength of the side beam 3 in the length direction on the one hand, and can also adapt to the extrusion molding method adopted by the side beam 3 on the other hand.

[0051] In the exemplary embodiment provided by the present disclosure, referring to Figure 3 as shown, in this battery tray, a second exhaust passage 9 can be provided between the partition beam 8 and the battery cell assembly 5, and the second exhaust passage 9 is respectively communicated with the second explosion-proof valve 51 and the air inlet 611b on the battery cell assembly 5. Through such a setting, it is possible to facilitate the high-temperature electrolyte vapor released when the battery cell assembly 5 undergoes thermal runaway to smoothly enter the first exhaust passage 611 through the air inlet 611b.

[0052] In addition, a third exhaust passage 10 can be provided between the second side beam 32 and the battery cell assembly 5. The third exhaust passage 10 is respectively communicated with the second explosion-proof valve 51, the exhaust port 611a and the first explosion-proof valve 33 on the battery cell assembly 5. In this way, when the battery cell assembly 5 undergoes thermal runaway, the second explosion-proof valve 51 of the battery cell assembly 5 opens. At this time, a part of the high-temperature electrolyte vapor will directly pass through the third exhaust passage 10, and then the first explosion-proof valve 33 will be flushed open and discharged therefrom. Another part of the high-temperature electrolyte vapor will first pass through the second exhaust passage 9, the first exhaust passage 611 and the third exhaust passage 10 in sequence, and then the first explosion-proof valve 33 will be flushed open and discharged therefrom. In this way, the evacuation and excretion of the high-temperature electrolyte vapor generated by the thermal runaway of the battery cell assembly 5 can be synchronously realized through two paths, further improving the evacuation efficiency of the high-temperature electrolyte vapor during thermal runaway and ensuring the safe use of the battery.

[0053] On the basis of the above technical solution, the present disclosure also provides a battery, which includes a battery cell assembly 5 and the above-mentioned battery tray. The battery cell assembly 5 is installed in the installation cavity 4 of the battery tray. Here, since the battery includes the above-mentioned battery tray and the relevant content of the battery tray has been described in detail in the foregoing content, for the sake of avoiding repetition, the present disclosure will not elaborate herein.

[0054] On the basis of the above technical solution, the present disclosure further provides an electrical device, which includes the above-mentioned battery. Among them, the electrical device can be any suitable electrical device such as a mobile terminal, a portable device, and a vehicle (such as an electric vehicle or a hybrid vehicle, etc.), and can be specifically selected flexibly according to the actual situation. The present disclosure does not limit this.

[0055] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0056] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable way without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0057] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A battery tray, characterized in that: include: Base plate; Side beams, the side beams are used to enclose a mounting cavity together with the bottom plate, and the mounting cavity is used to mount a battery cell assembly; as well as An exhaust beam extending along the length direction of the side beam and fixed to the side beam, the exhaust beam forming a first exhaust channel, the first exhaust channel having an exhaust port, the exhaust port being opened at the end of the exhaust beam, the first exhaust channel being connected to the installation cavity, and the first exhaust channel being connected to the external space of the battery tray through the exhaust port.

2. The battery tray according to claim 1, characterized in that: The side beam includes a first side beam and a second side beam arranged at an angle, the exhaust beam is parallel to the first side beam and fixed to the first side beam, the exhaust port is opposite to the second side beam, and a gap is provided between the exhaust port and the second side beam.

3. The battery tray according to claim 2, characterized in that: The first exhaust channel also has an air inlet, which is opened on the side wall of the exhaust beam and communicates with the installation cavity.

4. The battery tray according to claim 3, characterized in that: A ratio of a projection area of ​​a first projection of the exhaust port in the length direction of the exhaust beam to a second projection of the air inlet in the width direction of the exhaust beam is 0.6-1.

5. The battery tray according to claim 3, characterized in that: The battery tray further includes a partition beam and a blocking member, wherein the partition beam is connected between the two first side beams, and the partition beam divides the installation cavity into two sub-installation cavities. The exhaust ports are respectively arranged at the two ends of the exhaust beam, the number of the air inlets is two and they are respectively located on both sides of the partition beam, the two air inlets are respectively connected with the two sub-mounting cavities, and the blocking member is arranged in the first exhaust channel and blocks the connection between the two air inlets.

6. The battery tray according to claim 5, characterized in that: The distance between the exhaust port and the second side beam is L, and the distance between the exhaust port and the blocking member is L1, wherein the ratio of L to L1 is 0.03 to 0.

08.

7. The battery tray according to claim 2, characterized in that: A distance L between the exhaust port and the second side beam is 30 mm to 60 mm.

8. The battery tray according to claim 2, characterized in that: The second side beam is provided with a first explosion-proof valve, and the first explosion-proof valve is communicated with the exhaust port.

9. The battery tray according to claim 1, characterized in that: The exhaust beam is configured as a hollow beam and has a first hollow cavity and a second hollow cavity which are separated from each other. The first hollow cavity and the second hollow cavity are arranged up and down in a height direction of the exhaust beam, and the first hollow cavity is used as the first exhaust passage.

10. The battery tray according to claim 9, characterized in that: The second hollow cavity is provided with a first reinforcing rib, and the first reinforcing rib extends along the length direction of the exhaust beam.

11. The battery tray according to claim 1, characterized in that: The first exhaust channel has a cross section perpendicular to its axis, and the area of ​​the cross section is greater than or equal to 560 mm 2 .

12. The battery tray according to any one of claims 1 to 11, characterized in that: The exhaust beam and the side beam are an integral part.

13. The battery tray according to claim 12, characterized in that: The side beam is constructed as a hollow beam and is provided with a second reinforcing rib, wherein the second reinforcing rib extends along a length direction of the side beam.

14. A battery, characterized in that: It comprises a battery cell assembly and a battery tray according to any one of claims 1 to 13, wherein the battery cell assembly is installed in a mounting cavity of the battery tray.

15. An electrical equipment, characterized in that: Comprising a battery according to claim 14.

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