Tray, battery pack and electric equipment

Abstract

The invention discloses a tray, a battery pack and electric equipment, and the tray comprises a plurality of side plates which are enclosed to form a containing cavity; the exhaust beam comprises an exhaust cavity, an air inlet of the exhaust cavity is communicated with the containing cavity, and an air outlet of the exhaust cavity is communicated with the space outside the tray. According to the tray provided by the embodiment of the invention, the containing cavity is communicated with the external space through the exhaust cavity of the exhaust beam, so that gas in the containing cavity can be effectively exhausted, and the safety is improved.

Description

Technical Field

[0001] The present disclosure relates to a tray, a battery pack, and an electrical device. Background Art

[0002] In the prior art, for the multi-cavity structure of an integrated die-cast tray, each cavity is typically equipped with a separate explosion-proof pressure relief component, or high-temperature flue gas is allowed to flow between cavities. However, this will inevitably lead to a significant increase in cost or a significant decrease in safety. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a tray, a battery pack and an electrical device.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solutions:

[0005] The present disclosure provides a pallet, comprising:

[0006] a plurality of side panels, the plurality of side panels enclosing and forming a receiving cavity; and

[0007] The exhaust beam comprises an exhaust cavity, an air inlet of the exhaust cavity is communicated with the accommodating cavity, and an exhaust port of the exhaust cavity is communicated with the space outside the tray.

[0008] In some embodiments, the side panel is provided with an air vent, and the air vent is communicated with the exhaust port.

[0009] In some embodiments, the side plate is further provided with an air relief cavity, and the air relief cavity is communicated with the air relief port.

[0010] In some embodiments, the pallet further includes: a mounting plate, wherein the mounting plate and the side plate enclose the air release cavity; and an explosion-proof valve is provided on the mounting plate.

[0011] In some embodiments, the exhaust beam further includes: a first exhaust beam, and the side panel includes: a first side panel.

[0012] In some embodiments, the first side plate is provided with a support plate, and the first exhaust beam is fixed on the support plate.

[0013] In some embodiments, a communication port is provided on the support plate, and the communication port is used to connect the accommodating cavity with the first air inlet of the first exhaust beam.

[0014] In some embodiments, the support plate is perpendicular to the first side plate, and the length direction of the support plate is parallel to the length direction of the first side plate; the axis of the first air inlet is parallel to the axis of the accommodating cavity.

[0015] In some embodiments, the pallet further includes: a bottom plate, the distance from the first air inlet of the first exhaust beam to the bottom plate is L1, the distance from the end of the first side plate to the bottom plate is L, and 0.23≤L1 / L≤0.37.

[0016] In some embodiments, 20 mm ≤ L1 ≤ 40 mm.

[0017] In some embodiments, a cross-sectional area of ​​the first air inlet of the first exhaust beam is S1, a cross-sectional area of ​​the first exhaust cavity of the first exhaust beam is S, and 0.2≤S1 / S≤0.4.

[0018] In some embodiments, 211 mm 2 ≤S1≤422mm 2 .

[0019] In some embodiments, blocking plates are respectively provided at both ends of the first exhaust beam in the length direction.

[0020] In some embodiments, the first exhaust port of the first exhaust beam is adjacent to a blocking plate at one end of the first exhaust beam.

[0021] In some embodiments, the first side plate is provided with a first air release cavity, two first air release beams are provided, and the first air release ports of the two first air release beams are both connected to the first air release cavity.

[0022] In some embodiments, an axis of the first exhaust port of the first exhaust beam is parallel to a width direction of the first exhaust beam.

[0023] In some embodiments, the tray further includes: at least one partition plate, wherein the at least one partition plate divides the accommodating cavity into a plurality of sub-accommodating cavities; at least some of the plurality of sub-accommodating cavities are connected to the exhaust cavity.

[0024] In some embodiments, the exhaust beam further includes: a first exhaust beam and a second exhaust beam, wherein the second exhaust beam separates one of the sub-accommodating cavities into two sub-accommodating cavities.

[0025] In some embodiments, any one of the two sub-accommodation cavities divided into by the second exhaust beam is in communication with at least one second air inlet of the second exhaust beam.

[0026] In some embodiments, any one of the two sub-accommodation cavities divided into by the second exhaust beam is simultaneously in communication with at least one second air inlet of the second exhaust beam and at least one first air inlet of the first exhaust beam.

[0027] In some embodiments, the sub-accommodation cavity away from the second exhaust beam is in communication with the at least one first air inlet of the first exhaust beam.

[0028] In some embodiments, a sub-accommodation cavity for mounting battery cells in a sub-accommodation cavity away from the second exhaust beam is in communication with at least one first air inlet of the first exhaust beam.

[0029] In some embodiments, the side panel includes: a first side panel arranged along a first direction and a second side panel arranged along a second direction, the first exhaust beam is parallel to the first side panel, and the second exhaust beam is parallel to the second side panel.

[0030] In some embodiments, an axis of the second air inlet of the second exhaust beam is parallel to the first direction.

[0031] In some embodiments, a plurality of second air inlets are respectively provided on two opposite sides of the second exhaust beam.

[0032] In some embodiments, the first side plate is provided with a first air release cavity, two first air release beams are provided, and the first air release ports of the two first air release beams and the second air release port of the second air release beam are both connected to the first air release cavity.

[0033] In some embodiments, blocking plates are respectively provided at both ends of the first exhaust beam in the length direction, and two opposite side surfaces of the second exhaust beam are respectively fixedly connected to a blocking plate of the first exhaust beam.

[0034] In some embodiments, a one-way flow member is provided at the air inlet.

[0035] In some embodiments, the one-way flow member includes a one-way valve.

[0036] In some embodiments, the plurality of side panels are integrally die-cast.

[0037] In some embodiments, the plurality of side panels and partition panels are integrally die-cast.

[0038] In some embodiments, the exhaust beam further comprises: a plurality of cavities, a partition is provided between two cavities, and one of the cavities is configured as an exhaust cavity.

[0039] In some embodiments, the exhaust beam is an extruded part.

[0040] The pallet provided in the embodiment of the present disclosure connects the accommodating cavity and the external space through the exhaust cavity of the exhaust beam, so that the gas in the accommodating cavity can be effectively discharged, thereby improving safety.

[0041] The present disclosure also provides a battery pack, which includes: a tray provided in any of the above embodiments.

[0042] The present disclosure further provides an electrical device, which includes: a tray provided in any of the above embodiments or a battery pack provided in any of the above embodiments.

[0043] The electrical equipment has the same structure and beneficial effects as the tray described in any of the above embodiments, which will not be repeated here.

[0044] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0046] Figure 1 is a schematic structural diagram of a tray according to some embodiments;

[0047] Figure 2 is a schematic structural diagram of a tray according to some further embodiments;

[0048] Figure 3 is a partial structural diagram of a first side plate and a first exhaust beam of a pallet according to some embodiments;

[0049] Figure 4 Schematic diagram of the structure of a first exhaust beam of a pallet according to some embodiments. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0051] In the description of the present disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "back," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or relative positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present disclosure and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the present disclosure. Unless otherwise specified, the above-mentioned directional descriptions may be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are met.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this disclosure, unless otherwise specified, "plurality" means two or more.

[0053] In addition, in the specification and claims, "and / or" means at least one of the connected objects, and the character " / " generally indicates that the previous and subsequent related objects are in an "or" relationship.

[0054] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "electrically connected," and "connected" should be understood broadly. For example, they may refer to fixed electrical connections, detachable electrical connections, or integral electrical connections. They may be directly connected, indirectly connected through an intermediary, or internally connected between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0055] In the embodiments of the present disclosure, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device comprising a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present disclosure is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0056] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0057] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0058] In some embodiments, as Figure 1-4 As shown, the present disclosure provides a pallet, comprising:

[0059] A plurality of side panels 10 , wherein the plurality of side panels 10 enclose and form a receiving cavity 13 ; and

[0060] The exhaust beam includes an exhaust cavity, an air inlet of the exhaust cavity is communicated with the accommodating cavity 13, and an exhaust port of the exhaust cavity is communicated with the space outside the tray.

[0061] The pallet provided in the embodiment of the present disclosure connects the accommodating cavity 13 and the external space through the exhaust cavity of the exhaust beam, so that the gas in the accommodating cavity 13 can be effectively discharged, thereby improving safety.

[0062] In order to facilitate the exhaust of gas in the exhaust cavity, in some embodiments, as Figure 1 and 2 As shown, the side plate 10 is provided with an air vent 15 , which is communicated with the exhaust port.

[0063] That is, the gas in the exhaust cavity is exhausted through the vent 15 , so that the gas in the accommodating cavity 13 can be exhausted from the tray in time, thereby improving safety.

[0064] In order to better exhaust the gas in the exhaust cavity, in some embodiments, as Figure 1 and 2 As shown, the side plate 10 is further provided with an air relief cavity 16 , which is communicated with the air relief port 15 .

[0065] In order to better exhaust the gas in the exhaust cavity, in some embodiments, as Figure 1 As shown, the pallet further includes: a mounting plate 17 , which is enclosed with the side plate 10 to form an air release cavity 16 ; and an explosion-proof valve 30 is provided on the mounting plate 17 .

[0066] That is, the gas in the exhaust beams, especially the exhaust cavities of multiple exhaust beams, can be combined through the air release cavity 16 and discharged through the explosion-proof valve 30, thereby effectively reducing the number of explosion-proof valves 30 and reducing costs.

[0067] In order to better exhaust the gas in the exhaust cavity, in some embodiments, as Figure 1 and 2 As shown, the exhaust beam further includes: a first exhaust beam 21, and the side panel 10 includes: a first side panel 11.

[0068] The first exhaust cavity 213 of the first exhaust beam 21 is in communication with the accommodating cavity 13. There can be one or more first exhaust beams 21, so as to facilitate exhausting the gas in the accommodating cavity.

[0069] That is, by providing a plurality of exhaust beams, it is easy to discharge the gas in the accommodating cavity, thereby improving safety.

[0070] In order to facilitate the arrangement of the first exhaust beam 21, in some embodiments, as Figure 3 As shown, the first side plate 11 is provided with a support plate 19 , and the first exhaust beam 21 is fixed on the support plate 19 .

[0071] That is, the first exhaust beam 21 may be supported by the support plate 19 , so that the first exhaust beam 21 may be fixed to the first side plate 11 .

[0072] In order to facilitate the exhaust of the gas in the accommodating cavity 13, in some embodiments, as Figure 3 As shown, a communication port 191 is provided on the support plate 19 , and the communication port 191 is used to connect the accommodating cavity 13 with the first air inlet 211 of the first exhaust beam 21 .

[0073] That is, the first air inlet 211 may be disposed at a position where the first exhaust beam 21 contacts the support plate 19 , thereby facilitating exhaust of the gas in the accommodating cavity 13 .

[0074] In order to facilitate the discharge of gas in the accommodating chamber 13, in some embodiments, the support plate 19 is perpendicular to the first side plate 11, and the length direction of the support plate 19 is parallel to the length direction of the first side plate 11; the axis of the first air inlet 211 is parallel to the axis of the accommodating chamber 13.

[0075] That is, the axis of the first air inlet 211 is parallel to the axis of the accommodating cavity 13, thereby preventing the battery cells in the accommodating cavity 13 from expanding and completely covering the side walls of the side panel and blocking the air inlet during thermal runaway, thereby effectively discharging the gas in the accommodating cavity 13 and improving safety.

[0076] In order to facilitate the discharge of gas in the accommodating cavity 13, in some embodiments, the tray also includes: a bottom plate, the distance between the first air inlet 211 of the first exhaust beam 21 and the bottom plate is L1, the distance between the end of the first side plate 11 and the bottom plate is L, 0.23≤L1 / L≤0.37.

[0077] In some embodiments, 20 mm ≤ L1 ≤ 40 mm.

[0078] Given the limited distance L between the first side panel 11 and the bottom panel, a reasonable exhaust distance, L1, must be set to prevent loss of exhaust function due to a short exhaust distance or blockage by foreign matter during thermal runaway. Excessive L1 can reduce the size of the smoke burst, affecting exhaust efficiency. In some embodiments, 0.23 ≤ L1 / L ≤ 0.37 ensures that the first air inlet 211 is positioned appropriately, ensuring exhaust efficiency during thermal runaway.

[0079] To facilitate exhaust of the gas in the accommodating cavity 13 , in some embodiments, the cross-sectional area of ​​the first air inlet 211 of the first exhaust beam 21 is S1 , the cross-sectional area of ​​the first exhaust cavity of the first exhaust beam is S, and 0.2≤S1 / S≤0.4.

[0080] In some embodiments, 211 mm 2 ≤S1≤422mm 2 .

[0081] The cross-sectional area S1 of the first air inlet 211 and the cross-sectional area S of the exhaust cavity can be matched according to the gas production rate of the battery cell and the number of air inlets. The sum of the areas of the air inlets connected to each exhaust cavity (n*S1, where n is the number of air inlets) is generally not greater than the cross-sectional area S of the exhaust cavity. The size of S is related to the explosion-proof requirements.

[0082] In order to ensure the sealing effect of the exhaust cavity, in some embodiments, such as Figure 4 As shown, blocking plates 215 are respectively provided at both ends of the first exhaust beam 21 in the length direction, and the blocking plates 215 are used to block the first exhaust cavity 213 .

[0083] That is, both ends of the first exhaust beam 21 in the length direction can be blocked by the blocking plates 215, thereby ensuring the sealing effect of the exhaust cavity in the first exhaust beam 21 and preventing the gas in the exhaust cavity from entering the accommodating cavity 13 through both ends of the exhaust cavity.

[0084] To facilitate exhaust of gas in the exhaust cavity, in some embodiments, the first exhaust port 212 of the first exhaust beam 21 is adjacent to a blocking plate 215 at one end of the first exhaust beam 21 .

[0085] That is, after the gas in the accommodating chamber 13 is collected through the first air inlet 211, it can be discharged through the first exhaust port 212. By arranging the first exhaust port 212 at one end of the first exhaust beam 21 and adjacent to the blocking plate 215, the gas collected by the first air inlet 211 can be effectively discharged.

[0086] The air release chamber can be provided at a suitable position of the side plate 10, such as on the first side plate 11 or on the second side plate 12. In some embodiments, such as Figure 1 and2 As shown, the first side plate 11 is provided with a first air release cavity 16 , two first air release beams 21 are provided, and the first air release ports 212 of the two first air release beams 21 are both connected to the first air release cavity 16 .

[0087] That is, by providing two first exhaust beams 21 to respectively collect gas at different positions of the accommodating chamber 13 , the gas flow path can be effectively shortened, and the gas in the accommodating chamber 13 can be discharged in a timely and effective manner, thereby improving safety.

[0088] The first air release chamber 16 can be located at a suitable position of the first side plate 11. In some embodiments, the first air release chamber 16 can be located in the middle position of the first side plate 11, which can effectively shorten the gas flow path, thereby timely and effectively discharging the gas in the accommodating chamber 13.

[0089] To facilitate exhausting the gas in the exhaust cavity, in some embodiments, the axis of the first exhaust port 212 of the first exhaust beam 21 is parallel to the width direction of the first exhaust beam 21 .

[0090] That is, the first exhaust port 212 may be provided on a side wall of the first exhaust beam 21 close to the first side plate 11 , thereby shortening the exhaust path and facilitating gas discharge.

[0091] In order to facilitate the discharge of gas in the accommodating cavity and the installation of battery cells, in some embodiments, the tray also includes: at least one partition plate 14, at least one partition plate 14 divides the accommodating cavity 13 into multiple sub-accommodating cavities; at least some of the multiple sub-accommodating cavities are connected to the exhaust cavity.

[0092] That is, the accommodating chamber 13 can be divided into a plurality of sub-accommodating chambers by the partition plate 14 . To facilitate gas discharge, at least some of the plurality of sub-accommodating chambers are connected to the exhaust chamber.

[0093] In order to better exhaust the gas in the exhaust cavity, in some embodiments, as Figure 1 and 2 As shown, the exhaust beam further includes: a first exhaust beam 21 and a second exhaust beam 22, and the second exhaust beam divides one of the sub-accommodating cavities into two sub-accommodating cavities.

[0094] The first exhaust cavity 213 of the first exhaust beam 21 and the second exhaust cavity 223 of the second exhaust beam 22 are both in communication with the accommodating cavity 13 .

[0095] That is, by providing a plurality of exhaust beams, it is easy to discharge the gas in the accommodating cavity, thereby improving safety.

[0096] To facilitate exhaust of gas in the accommodating cavity, in some embodiments, any one of the two sub-accommodating cavities divided by the second exhaust beam 22 is communicated with at least one second air inlet 221 of the second exhaust beam 22 .

[0097] That is, the gas in any of the two sub-accommodating chambers divided by the second exhaust beam 22 can enter the air release chamber 16 through the second air inlet 221, so that the gas in the sub-accommodating chamber can be discharged in time, thereby improving safety.

[0098] In order to facilitate the discharge of gas in the accommodating cavity, in some embodiments, any of the two sub-accommodating cavities divided by the second exhaust beam 22 is simultaneously connected to the second air inlet 221 of at least one second exhaust beam 22 and the first air inlet 211 of at least one first exhaust beam 21.

[0099] That is, the gas in any of the two sub-cavities divided by the second exhaust beam 22 can enter the degassing cavity 16 through the second air inlet 221 and the first air inlet 211 at the same time, so that the gas in the sub-cavity can be discharged in time to improve safety.

[0100] To facilitate exhaust of gas in the accommodating cavity, in some embodiments, the sub-accommodating cavity away from the second exhaust beam 22 is communicated with the first air inlet 211 of at least one first exhaust beam 21 .

[0101] The sub-accommodation cavity away from the second exhaust beam 22 may be a sub-accommodation cavity other than the two sub-accommodation cavities divided by the second exhaust beam 22 .

[0102] That is, the gas in the sub-accommodation cavity away from the second exhaust beam 22 can enter the air release cavity 16 through the first air inlet 211, so that the gas in the sub-accommodation cavity can be discharged in time, thereby improving safety.

[0103] All sub-accommodation cavities away from the second exhaust beam 22 can be communicated with the first air inlet 211. In some embodiments, as shown in FIG. Figure 1 As shown, the sub-accommodation cavity for installing the battery cell in the sub-accommodation cavity away from the second exhaust beam 22 is communicated with the first air inlet 211 of at least one first exhaust beam 21 .

[0104] That is, at least the sub-cavity where the battery cells are installed can be connected to the first air inlet 211, so that when thermal runaway occurs in the battery cells, the gas generated by thermal runaway can be discharged in a timely manner. The sub-cavity where no battery cells are installed (such as where the battery manager is installed) can also be connected to the first air inlet 211, so that when the gas in the sub-cavity where thermal runaway occurs accidentally enters the sub-cavity where no battery cells are installed, it can also be discharged through the first air inlet 211 in a timely manner, thereby improving safety.

[0105] In order to better exhaust the gas in the exhaust cavity, in some embodiments, as Figure 1 and 2 As shown, the side panel 10 includes: a first side panel 11 arranged along a first direction and a second side panel 12 arranged along a second direction, the first exhaust beam 21 is parallel to the first side panel 11 , and the second exhaust beam 22 is parallel to the second side panel 12 .

[0106] In some embodiments, there may be two first side panels 11 and two second side panels 12, and the two first side panels 11 and the two second side panels 12 enclose a receiving cavity 13. In order to facilitate the discharge of gas in the receiving cavity 13, the first exhaust beam 21 is parallel to the first side panel 11, such as Figure 1-2 As shown, the first exhaust beam 21 can be arranged in contact with the first side plate 11, thereby facilitating the collection of gas in the accommodating cavity 13. The second exhaust beam 22 is parallel to the second side plate 12, that is, the second exhaust beam 22 can be arranged perpendicular to the first side plate 11. In some embodiments, the second exhaust beam 22 is arranged in the middle of the accommodating cavity 13, thereby effectively collecting gas in the accommodating cavity 13.

[0107] To facilitate the exhaust of gas in the accommodating cavity, in some embodiments, the axis of the second air inlet 221 of the second exhaust beam 22 is parallel to the first direction.

[0108] The second air inlet 221 can be set at a suitable position of the second exhaust beam 22. In order to facilitate gas discharge, the axis of the second air inlet 221 of the second exhaust beam 22 is parallel to the first direction, that is, the second air inlet 221 can be set on the side wall of the second exhaust beam 22 in the first direction, thereby facilitating gas discharge.

[0109] In order to facilitate the exhaust of gas in the accommodating cavity, in some embodiments, a plurality of second air inlets 221 are respectively provided on two opposite side surfaces of the second exhaust beam 22 .

[0110] That is, the second air inlet 221 may be provided on two side walls of the second exhaust beam 22 in the first direction, thereby facilitating the exhaust of gas in the sub-accommodating cavities on both sides of the second exhaust beam 22 .

[0111] The air release chamber can be provided at a suitable position of the side plate 10, such as on the first side plate 11 or on the second side plate 12. In some embodiments, such as Figure 1 and 2 As shown, the first side plate 11 is provided with a first air release cavity 16 , and two first air release beams 21 are provided. The first air release ports 212 of the two first air release beams 21 and the second air release ports 222 of the two second air release beams 22 are both connected to the first air release cavity 16 .

[0112] That is, by providing two first exhaust beams 21 and a second exhaust beam 22 to respectively collect gas at different positions of the accommodating chamber 13, the gas flow path can be effectively shortened, the gas in the accommodating chamber 13 can be discharged in a timely and effective manner, thereby improving safety.

[0113] The first air release chamber 16 can be located at a suitable position of the first side plate 11. In some embodiments, the first air release chamber 16 can be located in the middle position of the first side plate 11, which can effectively shorten the gas flow path, thereby timely and effectively discharging the gas in the accommodating chamber 13.

[0114] The first exhaust beam 21 and the second exhaust beam 22 can be installed in the tray in a suitable manner. In some embodiments, such as Figure 1 and 4 As shown, blocking plates 215 are respectively provided at both ends of the length direction of the first exhaust beam 21 , and two opposite side surfaces of the second exhaust beam 22 are respectively fixedly connected to a blocking plate 215 of the first exhaust beam 21 .

[0115] That is, the two first exhaust beams 21 are fixedly connected to the second exhaust beam 22, and then the two first exhaust beams 21 and the second exhaust beams 22 can be fixed to the first side plate 11 and the bottom plate, so that the exhaust beam 10 can be fixed in the pallet, which is beneficial to improve the stability and safety of exhaust.

[0116] In order to prevent the gas entering the exhaust cavity from flowing back, in some embodiments, a one-way flow member 40 is provided at the air inlet.

[0117] In some embodiments, the one-way flow member 40 includes a one-way valve.

[0118] The one-way flow member 40 can be any suitable device for preventing gas backflow, such as a one-way valve. The one-way valve can be fixed to the air inlet according to its structure, so that the gas in the receiving chamber can enter the exhaust chamber through the air inlet, but the gas in the exhaust chamber cannot enter the receiving chamber through the one-way valve, thereby preventing the gas from flowing back into the receiving chamber.

[0119] The tray can be formed in various suitable ways. In order to simplify the process and reduce costs, in some embodiments, the plurality of side panels 10 are integrally die-cast.

[0120] In some embodiments, the plurality of side panels (such as the first side panel 11 and the second side panel 12 ) and the partition panel 14 are integrally die-cast.

[0121] That is, the tray can be integrally die-cast, thus reducing costs. Due to the characteristics of integral die-casting, exhaust channels cannot be directly formed in the side panels 10. To address this technical problem, in some embodiments, exhaust beams 10 are provided in the tray. Exhaust beams 10 collect and exhaust gas from the accommodating cavity 13, thus resolving the gas exhaust problem during thermal runaway.

[0122] The exhaust beam can be constructed into various suitable structures. In some embodiments, the exhaust beam further includes: a plurality of cavities, a partition 214 is provided between two cavities, and one of the cavities is configured as an exhaust cavity.

[0123] By providing the separator 214 , the strength of the exhaust beam can be effectively improved, thereby preventing the exhaust beam from being flattened and losing the exhaust function when the battery cell expands due to thermal runaway.

[0124] The exhaust beam can be formed by various suitable methods. In some embodiments, the exhaust beam is an extruded part, thereby simplifying the processing technology and reducing costs.

[0125] To facilitate cooling of the battery cells, in some embodiments, the base plate is configured as a cold plate.

[0126] That is, a cold plate can be used as the bottom plate of the tray, thereby simplifying the structure and reducing costs.

[0127] The pallet provided in the embodiment of the present disclosure connects the accommodating cavity 13 and the external space through the exhaust cavity of the exhaust beam, so that the gas in the accommodating cavity 13 can be effectively discharged, thereby improving safety.

[0128] In some embodiments, as Figure 1 As shown, the one-piece die-cast pallet disclosed in the present invention is divided into 8 cavities. Due to the process limitations of the one-piece die-cast pallet itself, the side beams of the pallet are single-walled structures, and the center beam cannot be manufactured through-holes, so it is impossible to design exhaust ducts like traditional pallets. Extruded profiles can be used as exhaust chimneys for the center beam and side beams of the one-piece die-cast pallet. Matched with a one-way valve, a one-way exhaust path is formed from the module cavity to the vent cavity and explosion-proof valve. This not only allows the high-temperature flue gas after thermal runaway of the battery pack to flow separately without affecting each other, but also saves expensive explosion-proof valve components and allows flexible setting of the exhaust position.

[0129] The reason why the middle beam of the integrated die-casting tray uses extruded profiles is that the die-casting process is limited. The die-casting material package needs to be placed at the middle beam position, so the middle beam needs to be welded later. In order to take into account the exhaust design, extruded profiles are selected as the middle beam. Figure 3As shown, a Japanese-shaped profile is used to ensure structural strength while utilizing its cavity as an exhaust channel. Both ends of the chimney are welded shut, and an exhaust port is opened on the side and welded to align with the hole in the vent cavity. An air inlet is provided on the side facing the cold plate, and the location of the air inlet is sufficient from the cold plate to allow smoke to enter the exhaust chimney from bottom to top within the module cavity. In this invention, the vent cavity is located in the center of the tray, but it can also be located at the front, rear, or other suitable location depending on the actual situation.

[0130] like Figure 1 and 2 As shown, the exhaust of the side beam mainly enters the exhaust chimney from bottom to top through the one-way valve in the module cavity, then flows to the vent cavity through the exhaust chimney (exhaust cavity), and finally is discharged from the package through the explosion-proof valve. A certain number of air inlets and one-way valves are set in each module cavity. The air inlets are set from bottom to top mainly to avoid the battery cells from expanding and completely covering the large surface of the side beam during thermal runaway, thereby blocking the air inlets; the exhaust of the middle beam enters the profile cavity of the middle beam from the one-way valve and air inlet on its vertical surface, then flows along the middle beam to the vent cavity, and finally is discharged by the explosion-proof valve.

[0131] like Figure 3 As shown, a support plate is provided on the integral die-cast tray side beam, and the narrow side of the exhaust chimney is in face-to-face contact with the support plate. Arc welding is used to connect the exhaust chimney and the tray at the air inlet position and the cross-cavity position. Sufficient space is left between the cold plate and the air inlet position to ensure that high-temperature flue gas can enter the chimney from bottom to top. The S-shaped cross-section ensures its supporting strength to prevent the chimney from being flattened when the battery cell expands due to thermal runaway, thereby losing its exhaust function.

[0132] like Figure 1 As shown, the vent chamber is die-cast in one piece and includes a chamber and three vent ports. These ports connect to the airways of the exhaust chimney and the center beam, respectively, to collect high-temperature flue gas. A mounting plate is welded to the vent chamber, and the mounting plate has holes for installing an explosion-proof valve.

[0133] The present disclosure also provides a battery pack, which includes: a tray provided in any of the above embodiments.

[0134] The present disclosure further provides an electrical device, which includes: a tray provided in any of the above embodiments or a battery pack provided in any of the above embodiments.

[0135] Among them, the electrical equipment can be an electric vehicle.

[0136] The electrical equipment has the same structure and beneficial effects as the tray in any of the above embodiments, which will not be described in detail here.

[0137] The embodiments of the present disclosure are described above in conjunction with the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present disclosure, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present disclosure and the claims, all of which are protected by the present disclosure.

Claims

1. A pallet, characterized in that: include: A plurality of side panels, wherein the plurality of side panels enclose and form a receiving cavity; as well as The exhaust beam comprises an exhaust cavity, an air inlet of the exhaust cavity is communicated with the accommodating cavity, and an exhaust port of the exhaust cavity is communicated with the space outside the tray.

2. The pallet according to claim 1, wherein: The side plate is provided with an air vent, and the air vent is communicated with the exhaust port.

3. The pallet according to claim 2, wherein: The side plate is further provided with an air relief cavity, which is communicated with the air relief port.

4. The pallet according to claim 3, wherein: The tray further includes: a mounting plate, wherein the mounting plate and the side plates enclose the air release cavity; and an explosion-proof valve is provided on the mounting plate.

5. The pallet according to claim 1, wherein: The exhaust beam further includes a first exhaust beam, and the side plate includes a first side plate.

6. The pallet according to claim 5, characterized in that The first side plate is provided with a support plate, and the first exhaust beam is fixed on the support plate.

7. The pallet according to claim 6, characterized in that The support plate is provided with a communication port, and the communication port is used to connect the accommodating cavity with the first air inlet of the first exhaust beam.

8. The pallet according to claim 7, wherein: The support plate is perpendicular to the first side plate, and the length direction of the support plate is parallel to the length direction of the first side plate; the axis of the first air inlet is parallel to the axis of the accommodating cavity.

9. The pallet according to claim 8, characterized in that The tray further includes a bottom plate, wherein the distance from the first air inlet of the first exhaust beam to the bottom plate is L1, the distance from the end of the first side plate to the bottom plate is L, and 0.23≤L1 / L≤0.

37.

10. The pallet according to claim 9, characterized in that 20mm≤L1≤40mm.

11. The pallet according to claim 5, wherein: The first exhaust beam is provided with a first air inlet and a first exhaust cavity. The cross-sectional area of ​​the first air inlet is S1, the cross-sectional area of ​​the first exhaust cavity is S, and 0.2≤S1 / S≤0.

4.

12. The pallet according to claim 11, wherein: 211mm 2 ≤S1≤422mm 2 。 13. The pallet according to claim 5, wherein: Sealing plates are respectively provided at both ends of the first exhaust beam in the length direction.

14. The pallet according to claim 13, wherein: The first exhaust port of the first exhaust beam is adjacent to a blocking plate at one end of the first exhaust beam.

15. The pallet according to claim 14, wherein: The first side plate is provided with a first air release cavity, and two first air release beams are provided. The first air release ports of the two first air release beams are both communicated with the first air release cavity.

16. The pallet according to claim 7, wherein: An axis of the first exhaust port of the first exhaust beam is parallel to a width direction of the first exhaust beam.

17. The pallet according to claim 1, wherein: The tray further includes: at least one partition plate, wherein the at least one partition plate divides the accommodating cavity into a plurality of sub-accommodating cavities; at least some of the plurality of sub-accommodating cavities are in communication with the exhaust cavity.

18. The pallet according to claim 17, wherein: The exhaust beam further includes: a first exhaust beam and a second exhaust beam, wherein the second exhaust beam divides one sub-accommodation cavity into two sub-accommodation cavities.

19. The pallet according to claim 18, wherein Any one of the two sub-accommodation cavities divided by the second exhaust beam is communicated with at least one second air inlet of the second exhaust beam.

20. The pallet according to claim 18, wherein Any one of the two sub-accommodation cavities divided by the second exhaust beam is simultaneously in communication with at least one second air inlet of the second exhaust beam and at least one first air inlet of the first exhaust beam.

21. The pallet according to claim 18, wherein The sub-accommodation cavity away from the second exhaust beam is communicated with the at least one first air inlet of the first exhaust beam.

22. The pallet according to claim 18, wherein The sub-accommodation cavity for installing the battery cell in the sub-accommodation cavity away from the second exhaust beam is communicated with the at least one first air inlet of the first exhaust beam.

23. The pallet according to claim 18, wherein The side plate includes: a first side plate arranged along a first direction and a second side plate arranged along a second direction; the first exhaust beam is parallel to the first side plate; and the second exhaust beam is parallel to the second side plate.

24. The pallet according to claim 23, wherein: An axis of the second air inlet of the second exhaust beam is parallel to the first direction.

25. The pallet according to claim 24, characterized in that Two opposite side surfaces of the second exhaust beam are respectively provided with a plurality of second air inlets.

26. The pallet according to claim 23, wherein The first side plate is provided with a first air release cavity, and two first air release beams are provided. The first air release ports of the two first air release beams and the second air release port of the second air release beam are both communicated with the first air release cavity.

27. The pallet according to claim 26, characterized in that Both ends of the first exhaust beam in the length direction are respectively provided with blocking plates, and two opposite side surfaces of the second exhaust beam are respectively fixedly connected to a blocking plate of the first exhaust beam.

28. The pallet according to any one of claims 1 to 27, characterized in that A one-way flow component is provided at the air inlet.

29. The pallet according to claim 28, characterized in that The one-way flow component includes a one-way valve.

30. The pallet according to any one of claims 1 to 27, characterized in that The plurality of side panels are integrally formed by die-casting.

31. The pallet according to claim 17, wherein The plurality of side plates and partition plates are integrally die-cast.

32. The pallet according to any one of claims 1 to 27, characterized in that The exhaust beam further includes: a plurality of cavities, a partition is provided between two cavities, and one of the cavities is configured as an exhaust cavity.

33. The pallet according to any one of claims 1 to 27, characterized in that The exhaust beam is an extruded part.

34. A battery pack, characterized in that: include: The pallet according to any one of claims 1 to 33.

35. An electrical device, characterized in that: include: The tray according to any one of claims 1 to 33 or the battery pack according to claim 34.

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