High-safety evtol battery system capable of directionally exhausting

Abstract

The utility model discloses a high-safety evtol battery system capable of directionally exhausting, which belongs to the technical field of battery protection and comprises a plurality of battery modules, the plurality of battery modules are fixedly mounted on a box body, an upper cover is arranged at the upper end of the box body, the box body and the upper cover are fixed through bolts, and fireproof heat insulation materials are filled among the plurality of battery modules. A plurality of anti-explosion valves are fixedly mounted on the front and rear sides of the lower end of the box body respectively; the tops of the plurality of battery modules are filled with pouring sealant, a middle exhaust channel is reserved in the middle of the pouring sealant, and the anti-explosion valve is communicated with the middle exhaust channel through a connecting channel. Through the mode, the directional exhaust of the battery module is realized through the middle exhaust channel and the connecting channel, and meanwhile, the exhausted high-temperature gas is directionally drained to the position of the explosion-proof valve of the box body through the connecting channel, so that the directional exhaust of the battery module and the directional flow of the exhausted high-temperature gas are realized, and the high-temperature gas is effectively prevented from being diffused everywhere; and the safety of the battery pack is protected to the greatest extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery protection technical field, concretely relates to a high safety evtol battery system of directional exhaust. BACKGROUND

[0002] The electric vertical take-off and landing aircraft is a product directly driven by electric power, and generally uses a chargeable and dischargeable energy storage battery system to provide flight power.

[0003] For example, Chinese patent CN219180591U discloses a battery thermal runaway protection system, which comprises a detection module, a comparison module and an abnormal protection module.

[0004] However, the technology has the following problems: the battery protection device is added to protect the battery system, but when thermal runaway occurs, high-temperature gas will be transferred to other cells in the battery when a cell thermal runaway occurs, and since the cells do not have fixed explosion-proof valves, the location of cell failure is unpredictable, which greatly increases the difficulty of controlling the battery system thermal runaway.

[0005] Therefore, the utility model designs a high safety evtol battery system with directional exhaust to solve the above problems. UTILITY MODEL CONTENTS

[0006] In view of the above shortcomings of the prior art, the utility model provides a high safety evtol battery system with directional exhaust.

[0007] To achieve the above purpose, the utility model realizes the following technical scheme:

[0008] The application discloses a high-safety evtol battery system with directional exhaust, which comprises a plurality of battery modules, a driving end of an electric vertical take-off and landing aircraft, a box body, an upper cover, a plurality of explosion-proof valves and a plurality of connecting channels.

[0009] The top of each of the plurality of battery modules is filled with pouring sealant, the middle part of the pouring sealant is reserved with an intermediate exhaust channel, and the explosion-proof valve is communicated with the intermediate exhaust channel through the connecting channel.

[0010] Furthermore, the plurality of battery modules are connected in series through tab welding.

[0011] Furthermore, the battery modules are fixed to the upper end of the box body through heat-conducting structural glue.

[0012] Furthermore, the intermediate exhaust channel is provided with a plurality of groups and is located in the middle part of the plurality of pouring sealants.

[0013] Furthermore, the opening of the explosion-proof valve is downward and communicated with the electric vertical take-off and landing aircraft.

[0014] Furthermore, the connecting channel is provided with a plurality of groups and is located at the front and back sides of the plurality of battery modules.

[0015] Furthermore, each group of the connecting channel is provided with two connecting pipes and is located at the front and back sides of the intermediate exhaust channel, and the front and back ends of the intermediate exhaust channel are fixedly connected with the upper ends of the connecting pipes at the front and back sides.

[0016] Furthermore, the lower ends of the connecting pipes at the front and back sides are fixedly connected with the explosion-proof valves at the front and back sides.

[0017] Compared with the prior art, the application has the following beneficial effects: 1. The pouring sealant is reserved with an intermediate exhaust channel above the battery modules, so that the directional exhaust of the battery modules is realized.

[0018] The battery modules are filled with fireproof and heat-insulating materials, when a certain battery cell is in thermal runaway and exhausts, the thermal runaway gas will preferentially break through the position without the glue structure of the intermediate exhaust channel due to the relatively weak strength, so that the directional exhaust of the battery modules is realized, the high-temperature gas discharged can be directed to the position of the explosion-proof valve of the box body along the intermediate exhaust channel, so that the directional exhaust of the battery modules is realized, and the directional flow of the high-temperature gas discharged can effectively prevent the high-temperature gas from spreading everywhere.

[0019] 2. The explosion-proof valve is opened downward, avoids directly impacting the passenger cabin or other key positions, and directly discharges to the outside of the aircraft body. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 A perspective view of the high-safety evtol battery with directional exhaust of the present application;

[0022] Figure 2 A front view of the high-safety evtol battery with directional exhaust of the present application;

[0023] Figure 3 A split view of the high-safety evtol battery with directional exhaust of the present application;

[0024] Figure 4 A schematic view of the battery module of the present application.

[0025] The numbers in the figures represent respectively:

[0026] 1, upper cover; 2, battery module; 3, fireproof and heat insulation material; 4, potting adhesive; 5, middle exhaust passage; 6, box body; 7, explosion-proof valve; 8, connecting passage. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] In the following description, "left", "right", "front", "back", "up", "down" are oriented with the perspective direction of the front view.

[0029] Embodiment one: in some embodiments, referring to the front view of the drawings in the specification Figures 1-4 , including a plurality of battery modules 2, the plurality of battery modules 2 are connected in series and electrically connected with the driving end of the electric vertical take-off and landing aircraft, the plurality of battery modules 2 are fixedly installed on the box body 6, the upper end of the box body 6 is provided with an upper cover 1, the box body 6 and the upper cover 1 are fixed by bolts, the plurality of battery modules 2 are filled with fireproof and heat insulation material 3, and a plurality of explosion-proof valves 7 are fixedly installed on the front and back sides of the lower end of the box body 6 respectively.

[0030] The top of the plurality of battery modules 2 is filled with potting glue 4, the middle of which is reserved for an intermediate exhaust passage 5, and the explosion-proof valve 7 is communicated with the intermediate exhaust passage 5 through a connecting passage 8.

[0031] A plurality of battery cells are provided inside the battery module 2, and the battery cells are filled with buffer and heat insulation materials between the battery cells to prevent high-temperature gas from being transmitted to other battery cells when a certain battery cell is out of control.

[0032] The plurality of battery modules 2 are connected together by tab welding.

[0033] The battery module 2 is fixed to the upper end of the box body 6 by a heat-conducting structural adhesive.

[0034] The intermediate exhaust passage 5 is provided with multiple groups and is located in the middle of the plurality of potting glues 4.

[0035] The opening of the explosion-proof valve 7 is downward and is communicated with the electric vertical take-off and landing aircraft, avoiding directly impacting the passenger cabin or other critical positions, and directly discharging to the outside of the aircraft body.

[0036] The explosion-proof valve 7 minimizes the thermal diffusion path, thereby minimizing the influence of thermal diffusion exhaust on other modules.

[0037] The number relationship between the battery module 2, the fireproof heat insulation material 3 and the explosion-proof valve 7 is that if the battery module 2 is n, the fireproof heat insulation material 3 is n+1, and the explosion-proof valve 7 is 2n.

[0038] The connecting passage 8 is provided with multiple groups and is located on the front and rear sides of the plurality of battery modules 2.

[0039] As shown in Figure 4 Each group of connecting passages 8 is provided with two connecting pipes and is located on the front and rear sides of the intermediate exhaust passage 5, and the front and rear ends of the intermediate exhaust passage 5 are fixedly connected with the upper ends of the connecting pipes on the front and rear sides, respectively.

[0040] The lower ends of the connecting pipes on the front and rear sides are fixedly connected with the explosion-proof valves 7 on the front and rear sides, respectively.

[0041] The utility model discloses a battery module 2 top is through the filling of potting glue 4 and reserves the middle exhaust passage 5, realizes the function of the directional exhaust of battery module.

[0042] The utility model discloses a battery module 2 top is through the filling of potting glue 4 and reserves the middle exhaust passage 5, realizes the function of the directional exhaust of battery module.

[0043] The above embodiment is only used to illustrate the technical scheme of the utility model, and is not limited thereto; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical scheme recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiments of the utility model.

Claims

1. A high-safety EVTOL battery system with directional venting, comprising multiple battery modules (2), characterized in that: Multiple battery modules (2) are connected in series and electrically connected to the drive end of the electric vertical take-off and landing aircraft. Multiple battery modules (2) are fixedly installed on the housing (6). The upper end of the housing (6) is provided with a cover (1). The housing (6) and the cover (1) are fixed by bolts. Fireproof and heat-insulating material (3) is filled between multiple battery modules (2). Multiple explosion-proof valves (7) are fixedly installed on the front and rear sides of the lower end of the housing (6). The top of each of the multiple battery modules (2) is filled with potting compound (4), and a middle exhaust channel (5) is reserved in the middle of the potting compound (4). The explosion-proof valve (7) is connected to the middle exhaust channel (5) through the connecting channel (8).

2. The high-safety EVTOL battery system with directional venting according to claim 1, characterized in that, The multiple battery modules (2) are connected in series by electrode tabs.

3. The high-safety EVTOL battery system with directional venting according to claim 2, characterized in that, The battery module (2) is fixed to the upper end of the housing (6) by thermally conductive structural adhesive.

4. The high-safety EVTOL battery system with directional venting according to claim 3, characterized in that, The intermediate venting channel (5) is provided in multiple sets and is located in the middle of multiple potting compounds (4).

5. The high-safety EVTOL battery system with directional venting according to claim 4, characterized in that, The explosion-proof valve (7) has an opening facing downwards and is connected to the electric vertical takeoff and landing aircraft.

6. The high-safety EVTOL battery system with directional venting according to claim 5, characterized in that, The connection channel (8) is provided in multiple sets and is located on the front and rear sides of multiple battery modules (2).

7. The high-safety EVTOL battery system with directional venting according to claim 6, characterized in that, Each set of connecting channels (8) is provided with two connecting pipes located on the front and rear sides of the middle exhaust channel (5), respectively. The front and rear ends of the middle exhaust channel (5) are fixedly connected to the upper ends of the connecting pipes on the front and rear sides, respectively.

8. The high-safety EVTOL battery system with directional venting according to claim 7, characterized in that, The lower ends of the connecting pipes on the front and rear sides are fixedly connected to the explosion-proof valves (7) on the front and rear sides, respectively.

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