Battery pack and vehicle

Abstract

The present application relates to the field of battery technology, and provides a battery pack and a vehicle. According to the battery pack provided by the present application, a plurality of ventilation holes as described above are provided on the wall portion of the outer shell of the battery pack, and when these ventilation holes are not closed by the corresponding closing components, these ventilation holes can connect the cavity with the environment in which the battery pack is located, thereby allowing the cavity of the battery pack to exchange gas with the external environment through these ventilation holes, thereby providing better ventilation performance and heat dissipation performance, and at the same time facilitating the batteries inside the outer shell of the battery pack to exhaust gas in a directional manner toward the side of the wall portion where these ventilation holes are located. Since a dustproof net is provided for each ventilation hole to cover the ventilation hole, while ensuring gas circulation, it is possible to prevent debris from entering the cavity through the ventilation hole to a certain extent.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack and a vehicle. Background Art

[0002] Collisions and scrapes of new energy vehicle chassis occur from time to time, and the power battery box, as an important part of the vehicle, is also a high-incidence part of new energy vehicle accidents. When the chassis collides or scrapes, the power battery box may be damaged, and may become flammable or even explode, endangering the personal safety of the driver. Therefore, the practice in the relevant technology usually uses a metal guard plate to protect the power battery, that is, the metal guard plate is covered on the bottom of the battery box by bolt connection or overall welding, thereby forming a layer of hard protection to improve the battery's ability to resist impact when it collides or scrapes.

[0003] However, the metal guard plate used in the above protection method is an integral structure, which is not only heavy but also very tight, which is not conducive to heat dissipation and ventilation during battery operation, and is also not conducive to directional exhaust of the battery. Summary of the invention

[0004] In view of this, the present application provides a battery pack and a vehicle, the purpose of which is to solve the above technical problems to a certain extent.

[0005] A first aspect of the present application provides a battery pack, the battery pack comprising:

[0006] An outer shell, the outer shell having a cavity and a wall portion, the wall portion having a plurality of ventilation holes, and the plurality of ventilation holes are connected to the cavity;

[0007] A plurality of dustproof nets, the plurality of dustproof nets are arranged in one-to-one correspondence with the plurality of ventilation holes, and each of the dustproof nets shields the corresponding ventilation hole;

[0008] A plurality of closing components are arranged one-to-one corresponding to the plurality of dustproof nets, each of the closing components is arranged on a side of the corresponding dustproof net away from the cavity, and can move toward the corresponding dustproof net to close the ventilation hole corresponding to the corresponding dustproof net.

[0009] On the basis of the above technical solution, optionally, the dustproof net protrudes into the cavity to form a recess on a side of the dustproof net away from the cavity, and a side of the closure assembly facing the recess is adapted to the recess.

[0010] Based on any of the above technical solutions, optionally, the sealing component includes:

[0011] A closing plywood, the closing plywood being used to abut against the wall portion to seal the corresponding ventilation hole;

[0012] An air guide rod is arranged on the side of the closed joint plate facing the corresponding dustproof net, and the side of the air guide rod facing the corresponding dustproof net protrudes toward the corresponding dustproof net to guide air to the corresponding dustproof net.

[0013] Based on any of the above technical solutions, optionally, the dustproof net protrudes into the cavity to form a recess on the side of the dustproof net away from the cavity, and the side of the air guide rod facing the corresponding dustproof net is adapted to the recess.

[0014] On the basis of any of the above technical solutions, optionally, the dustproof net extends along a first direction, the outer shell further comprises a reinforcing portion arranged on a side of the wall portion facing the cavity, the reinforcing portion extends along a second direction intersecting the first direction, and the reinforcing portion passes through at least some of the dustproof nets among the plurality of dustproof nets;

[0015] The side of the wind guide rod facing the corresponding dustproof net has a groove, and the groove is used to accommodate part of the reinforcement part when the closing component closes the corresponding dustproof net, and the part of the reinforcement part contacts the inner side of the groove.

[0016] Based on any of the above technical solutions, optionally, the reinforcement portion is further connected to two side portions of the outer shell that are opposite to each other in the second direction, and the reinforcement portion is further connected to a side portion of the outer shell that corresponds to the wall portion.

[0017] Based on any of the above technical solutions, optionally, the dust-proof net and the corresponding wind guide rod extend along a first direction, the multiple dust-proof nets are arranged at intervals along a second direction intersecting the first direction, and the wind guide rod has an air inlet hole, which connects the space on both sides of the wind guide rod in the second direction of the wind guide rod.

[0018] Based on any of the above technical solutions, optionally, the battery pack also includes a driving component, each of the dustproof nets has a through hole, and for each of the dustproof nets, the driving component is passed through the through hole and connected to the corresponding closing component, and the driving component is arranged in the cavity.

[0019] Based on any of the above technical solutions, optionally, the battery pack also includes a locking assembly, which is arranged in the cavity and connected to the outer shell, and the locking assembly is used to detachably lock the driving assembly when the driving assembly drives the closing assembly to close the ventilation hole corresponding to the corresponding dustproof net.

[0020] In a second aspect, the present application provides a vehicle, comprising a battery pack as described above.

[0021] Thus, according to the battery pack provided by the present application, a plurality of ventilation holes as described above are provided on the wall portion of the outer shell of the battery pack. When these ventilation holes are not closed by the corresponding closing components, these ventilation holes can connect the cavity with the environment where the battery pack is located, thereby allowing the cavity of the battery pack to exchange gas with the external environment through these ventilation holes, thereby providing better ventilation and heat dissipation performance, and at the same time facilitating the batteries inside the outer shell of the battery pack to exhaust gas in a directional manner toward the side where the wall portion where these ventilation holes are located. Since a dustproof net is provided for each ventilation hole to cover the ventilation hole, while ensuring gas circulation, it is possible to prevent debris from entering the cavity through the ventilation hole to a certain extent.

[0022] Thus, according to the battery pack provided by the present application, the battery pack is allowed to obtain anti-seismic performance while still having the ability of ventilation and heat dissipation when the wall portion is reinforced accordingly. In special working environments, such as in some harsh road conditions, the ventilation holes corresponding to the corresponding dustproof nets are closed by means of a closing component to prevent the adverse environmental factors in the harsh road conditions from adversely affecting the interior of the battery pack. In other words, when the closing component closes the corresponding ventilation holes, the battery pack switches to an anti-seismic and anti-impact working mode.

[0023] In addition, according to the battery pack provided in the present application, each closing component closes the corresponding ventilation hole from the side of the corresponding dustproof net away from the cavity, that is, the closing component closes the corresponding ventilation hole from the outside, and the travel of the closing component does not occupy the internal space of the battery pack, thereby effectively ensuring that the battery pack has a higher energy density while obtaining the above beneficial effects.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a three-dimensional diagram of a battery pack provided according to an embodiment of the present application is shown.

[0026] Figure 2 A schematic diagram of another three-dimensional diagram of a battery pack provided according to an embodiment of the present application is shown.

[0027] Figure 3 A schematic diagram of a three-dimensional diagram of a battery pack provided in an embodiment of the present application with the side panels omitted is shown.

[0028] Figure 4 A schematic diagram of a three-dimensional diagram of a battery pack with part of the structure omitted according to an embodiment of the present application is shown.

[0029] Figure 5 A schematic diagram of a three-dimensional diagram of another battery pack with part of the structure omitted is shown according to an embodiment of the present application.

[0030] Figure 6 A schematic diagram of a three-dimensional diagram of another battery pack provided according to an embodiment of the present application with part of the structure omitted is shown.

[0031] Figure 7 A schematic diagram of a three-dimensional diagram of another structure of a battery pack with part of the structure omitted is shown according to an embodiment of the present application.

[0032] Figure 8 A schematic diagram of a three-dimensional diagram of a partial structure of a battery pack provided according to an embodiment of the present application is shown.

[0033] Fig. 9 A schematic diagram of a three-dimensional diagram of another portion of the structure of a battery pack provided according to an embodiment of the present application is shown.

[0034] Fig.10 A schematic diagram of a three-dimensional diagram of another portion of the structure of a battery pack provided according to an embodiment of the present application is shown.

[0035] Reference numerals:

[0036] 1-outer shell; 2-power battery; 3-seismic bottom plate; 301-ventilation hole; 302-sealed storage slot; 4-dustproof net; 401-lifting slide hole; 5-switching electric push rod; 6-suspension telescopic rod; 7-suspension frame; 8-suspension slide bar; 9-wind guide rod; 901-main rib groove; 902-air inlet hole; 10-sealed plywood; 11-waterproof sealing pad; 12-reinforced main rib; 13-auxiliary fan; 14-fastening frame; 15-locking claw; 16-bidirectional sliding sleeve; 17-elastic telescopic slider; 18-roller. DETAILED DESCRIPTION

[0037] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0041] According to a first aspect of an embodiment of the present application, a battery pack is provided. Figures 1 to 10 Describe the structure and working principle of the battery pack in detail.

[0042] According to the battery pack provided in the embodiment of the present application, the battery pack includes an outer shell, a plurality of dustproof nets and a plurality of sealing components.

[0043] In an embodiment, the outer shell has a cavity and a wall, the wall has a plurality of ventilation holes, and the plurality of ventilation holes are connected to the cavity. In an embodiment, the plurality of dustproof nets are arranged one-to-one corresponding to the plurality of ventilation holes, and each dustproof net shields the corresponding ventilation hole.

[0044] In an embodiment, the above-mentioned multiple closing components are arranged one-to-one corresponding to the above-mentioned multiple dustproof nets, each closing component is arranged on a side of the corresponding dustproof net away from the cavity, and can move toward the corresponding dustproof net to close the ventilation hole corresponding to the corresponding dustproof net.

[0045] Thus, according to the battery pack provided by the embodiment of the present application, a plurality of ventilation holes as described above are provided on the wall portion of the outer shell of the battery pack. When these ventilation holes are not closed by the corresponding closing components, these ventilation holes can connect the cavity with the environment where the battery pack is located, thereby allowing the cavity of the battery pack to exchange gas with the external environment through these ventilation holes, thereby providing better ventilation performance and heat dissipation performance, and at the same time facilitating the batteries inside the outer shell of the battery pack to exhaust gas in a directional manner toward the side where the wall portion where these ventilation holes are located. Since a dustproof net is provided for each ventilation hole to cover the ventilation hole, while ensuring gas circulation, it is possible to prevent debris from entering the cavity through the ventilation hole to a certain extent.

[0046] Thus, according to the battery pack provided in the embodiment of the present application, the battery pack is allowed to obtain earthquake resistance while still having the ability of ventilation and heat dissipation when the wall portion is reinforced accordingly. In special working environments, such as in some harsh road conditions, the ventilation holes corresponding to the corresponding dustproof nets are closed by means of a closing component to prevent the harsh environmental factors in the harsh road conditions from adversely affecting the interior of the battery pack. In other words, when the closing component closes the corresponding ventilation holes, the battery pack switches to an earthquake-resistant and impact-resistant working mode.

[0047] In addition, according to the battery pack provided in the embodiment of the present application, each closing component closes the corresponding ventilation hole from the side of the corresponding dustproof net away from the cavity, that is, the closing component closes the corresponding ventilation hole from the outside, and the travel of the closing component does not occupy the internal space of the battery pack, thereby effectively ensuring that the battery pack has a higher energy density while obtaining the above beneficial effects.

[0048] In the embodiment, it should be noted that the above-mentioned "shielding" should be understood to include the following meanings: for the dust screen and ventilation hole corresponding to each other, each part of the inner edge of the ventilation hole has a part of a closed contour of the dust screen to correspond, that is, the dust screen can be inscribed in the inner edge of the ventilation hole, so that the airflow passing through each part of the ventilation hole must pass through the dust screen. "Shielding" can also mean that a closed contour of the dust screen is surrounded by the periphery of the ventilation hole, so that the airflow passing through each part of the ventilation hole must pass through the dust screen.

[0049] In the embodiment, the sealing effect of the sealing component on the corresponding ventilation hole should be understood to include preventing the fluid (gas and liquid) in the external environment from entering the interior of the cavity of the battery pack through the ventilation hole.

[0050] In addition, in an embodiment, as an example, the ventilation hole may be, for example, a rectangular shape, as an example, the length direction of the ventilation hole may be, for example, the extension direction of the wide side of the battery pack, and the width direction of the ventilation hole may be, for example, the extension direction of the long side of the battery pack.

[0051] In addition, a more specific description of the above structure will be provided in subsequent more specific examples.

[0052] According to the battery pack provided in the embodiment of the present application, the dustproof net can protrude into the cavity to form a recess on the side of the dustproof net away from the cavity, and the side of the closing assembly facing the recess can be adapted to the recess.

[0053] In the embodiment, according to the above description, in essence, the dustproof net protrudes into the cavity, and forms a recessed portion on the outside for accommodating the closed component. The advantages of this approach are mainly reflected in the following two aspects.

[0054] On the one hand, the dust-proof net protruding into the cavity presents a three-dimensional structure located in the cavity in space, and the surface of the dust-proof net located in the cavity can provide a path for the circulation of gas. Therefore, when the gas flows from the dust-proof net into the interior of the cavity, the dust-proof net provides a key starting position for the gas, and the starting position of most of the airflow is separated from the inner surface of the wall, so that the position is more conducive to flowing into the cavity. The dust-proof net also provides a key starting speed for the gas. The starting speed referred to here focuses on the direction of the speed. Compared with the starting speed of the airflow provided by the unobstructed through hole generally along the opening direction of the through hole, due to the blocking and guiding of the airflow by the dust-proof net with a protruding structure, the airflow flowing out of the dust-proof net has a substantially perpendicular equivalent plane to the dust-proof net position where the airflow flows out, so that the airflow is not easily blocked by the battery in the outer shell, and has the conditions for further diffusion in the cavity.

[0055] On the other hand, the recess formed by the protrusion into the cavity and located outside the dustproof net accommodates the closing component, so that after the closing component is stacked on the corresponding ventilation hole to close the corresponding ventilation hole, the battery pack is more compact in space. More importantly, when the closing component does not close the ventilation hole, the closing component forms a gap based on the shape of the recess between the closing component and the recess because its side facing the recess fits the recess. This gap provides a smaller space for gas circulation relative to both the external environment and the internal environment of the cavity. Therefore, after the airflow flows into the gap, the flow rate of the gas accelerates sharply. In addition, the shapes of the closing component and the recess are both facing the inside of the cavity, so that the gas can be more effectively discharged from the inside of the cavity to the outside of the cavity and flow from the external environment into the inside of the cavity.

[0056] According to the battery pack provided in the embodiment of the present application, the closed assembly may include a closed plywood and an air guide rod, and the closed plywood may be used to abut against the wall to seal the corresponding ventilation hole. In an embodiment, the air guide rod may be disposed on the side of the closed plywood facing the corresponding dustproof net, and the side of the air guide rod facing the corresponding dustproof net protrudes toward the corresponding dustproof net to guide air to the corresponding dustproof net. In other words, in the closed assembly, the side of the air guide rod facing the corresponding dustproof net may be adapted to the recess.

[0057] According to the battery pack provided in the embodiment of the present application, the dustproof net can extend along a first direction, and the outer shell can also include a reinforcement portion arranged on the side of the wall facing the cavity, the reinforcement portion can extend along a second direction intersecting the first direction, and the reinforcement portion can pass through at least part of the multiple dustproof nets.

[0058] In an embodiment, the side of the wind guide rod facing the corresponding dustproof net has a groove, which can be used to accommodate part of the reinforcement part when the closing component closes the corresponding dustproof net, and the part of the reinforcement part contacts the inner side of the groove.

[0059] Thus, according to the battery pack provided by the embodiment of the present application, when the closure assembly closes the corresponding ventilation hole, since the groove of the wind guide rod is in partial contact with the reinforcement portion, when the closure assembly is impacted, the impact force borne by the closure assembly can be transmitted to the reinforcement portion, that is, to the outer shell, thereby improving the overall anti-seismic performance of the battery pack. In addition, the first direction here can be the width direction as above, and the second direction can be the length direction perpendicular to the width direction.

[0060] According to the battery pack provided in the embodiment of the present application, the reinforcing portion can also be connected to two side portions of the outer shell that are opposite to each other in the second direction, and the reinforcing portion is also connected to the side portion of the outer shell corresponding to the wall portion, thereby further improving the seismic resistance of the outer shell.

[0061] According to the battery pack provided in the embodiment of the present application, the dustproof net and the corresponding wind guide rod extend along a first direction, and the above-mentioned multiple dustproof nets are arranged at intervals along a second direction intersecting the first direction. The wind guide rod has air inlet holes, and the air inlet holes can connect the spaces on both sides of the wind guide rod in the second direction of the wind guide rod, so that even if it is an air guide rod in the middle, the airflow will not be blocked due to the obstruction of other air guide rods.

[0062] According to the battery pack provided in the embodiment of the present application, the battery pack also includes a driving component, each dustproof net has a through hole, for each dustproof net, the driving component is passed through the through hole and connected to the corresponding closed component, the driving component can be placed in the cavity, and the driving component is built into the outer shell, thereby reducing the space occupied by the battery pack.

[0063] According to the battery pack provided in the embodiment of the present application, the battery pack may further include a locking assembly, which is arranged in the cavity and can be connected to the outer shell. The locking assembly can be used to detachably lock the driving assembly when the driving assembly drives the closing assembly to close the ventilation holes corresponding to the corresponding dustproof net, thereby sharing the pressure of the components providing driving force in the driving assembly for positioning the driving assembly as a whole, which is beneficial to ensuring the reliability of the driving assembly and improving the service life of the driving assembly. The specific structure of the driving assembly will be explained in the subsequent description.

[0064] Based on the technical features described above, the embodiments of the present application aim to provide a power battery pack and its external structure that maintain a balance between the exhaust cooling and anti-vibration and anti-shock functions, so that it can maintain good ventilation effect under normal conditions and switch to an anti-vibration and anti-shock mode in special road sections.

[0065] In the embodiment, the power battery 2 is installed inside the outer shell 1, the bottom of the outer shell 1 is a seismic bottom plate 3 (i.e., the wall portion), the power battery 2 is wrapped inside by the outer shell 1 and the seismic bottom plate 3, a plurality of evenly distributed ventilation holes 301 are provided at the bottom of the seismic bottom plate 3, a plurality of dustproof nets 4 are installed on the top of the seismic bottom plate 3, and the plurality of dustproof nets 4 respectively cover the tops of the plurality of ventilation holes 301, the dustproof net 4 may be in a regular triangle shape structure, including four mesh panels in the front, back, left and right directions, and the bottom of the dustproof net 4 is not covered by a mesh panel.

[0066] In the embodiment, a switching mechanism is provided on the top of the earthquake-resistant base plate 3 to close each ventilation hole 301 . The switching mechanism includes two switching electric push rods 5 installed inside the outer shell 1, and a plurality of hanging telescopic rods 6 are installed inside the outer shell 1. The switching electric push rods 5 and the hanging telescopic rods 6 are respectively divided into two groups and distributed on both sides of the power battery 2. The switching electric push rods 5 and the hanging telescopic rods 6 are both vertically arranged, and the telescopic ends of the plurality of switching electric push rods 5 and the plurality of hanging telescopic rods 6 are all downwardly facing and are installed with the same hanging frame 7. A plurality of groups of hanging slide rods 8 are installed at the bottom of the hanging frame 7, and each group of hanging slide rods 8 has two each. The bottom end of each group of hanging slide rods 8 is installed with the same air guide rod 9. The number of air guide rods 9 is consistent with the number of ventilation holes 301 and dustproof nets 4. Two lifting sliding holes 401 are provided at the top of each dustproof net 4. A plurality of hanging slide rods 8 are respectively slidably installed inside each lifting sliding hole 401. Each air guide rod 9 is suspended at the bottom of each dustproof net 4, that is, the bottom of the seismic bottom plate 3, through the hanging slide rod 8. The outer shape structure of the air guide rod 9 is a regular triangle, which is compatible with the dustproof net 4.

[0067] In the embodiment, under normal conditions, the electric push rod 5 and the suspension telescopic rod 6 are switched to remain in a stretched state, the air guide rod 9 is located at the bottom of the seismic base plate 3 and is spaced a large distance from the dustproof net 4. During driving of the car, the airflow under the car will flow into the assembly position of the battery along the gap in the chassis, and then flow into the interior of the outer shell 1 from the gap between the air guide rod 9 and the seismic base plate 3 and the dustproof net 4 to cool and dissipate the power battery 2. The equilateral triangle structure of the air guide rod 9 can guide the air path, and the airflow will flow directly into the interior of the outer shell 1 along the inclined surfaces on both sides of the air guide rod 9 through the dustproof net 4 and the ventilation holes 301. At the same time, the power battery 2 can cooperate with the installed exhaust mechanism to exhaust air to the outside from the ventilation holes 301. The presence of multiple ventilation holes 301 can maintain two-way air circulation between the internal space of the outer shell 1 and the external environment under the car.

[0068] In the embodiment, at the same time, each dustproof net 4 covers the top of the ventilation hole 301, which can filter the airflow from the outside to prevent dust and debris from the bottom of the vehicle from entering the internal environment of the outer shell 1 and affecting the normal operation of the power battery 2. An auxiliary fan 13 is installed on one side of the outer shell 1. The air inlet end of the auxiliary fan 13 is located outside the outer shell 1, and the air outlet end is located inside the outer shell 1 and faces the power battery 2 and each dustproof net 4. The auxiliary fan 13 can operate to blow air into the interior of the outer shell 1 to assist The power battery 2 dissipates heat, and at the same time, the airflow is blown to the top of each dustproof net 4, so that the airflow passes through the dustproof net 4 from the inside of the outer shell 1 and blows to the outside, so that the dust, lint, etc. accumulated at the bottom of the dustproof net 4 and the top of the air guide rod 9 are blown off, ensuring the cleanliness of the bottom of the dustproof net 4 and the top of the air guide rod 9. A plurality of evenly distributed air ducting holes 902 are provided on the inclined surface of the air guide rod 9. The air ducting holes 902 can increase the air permeability of the air guide rod 9, so that the several air guide rods 9 located in the middle can also guide the airflow into the interior of the outer shell 1.

[0069] When the vehicle is about to enter a flooded section or a complex section such as a dirt road or gravel road, the vehicle can send a closing signal to the switching mechanism in advance through the on-board satellite positioning and various sensors. At this time, the switching electric push rods 5 on both sides of the power battery 2 drive the suspension frame 7 to lift upward, and the suspension frame 7 drives the air guide rod 9 to rise synchronously through the suspension slide bar 8. The suspension slide bar 8 slides upward in the lifting slide hole 401 until each air guide rod 9 is stuck into the inside of each dustproof net 4 from the bottom. The switching electric push rod 5 stops moving, and the air guide rod 9 closes the bottom of the dustproof net 4 at each location, that is, the ventilation holes 301 at the bottom of the anti-seismic bottom plate 3 are closed, so that the air flow channel between the inside of the outer shell 1 and the outside is cut off, and the bottom of the battery pack as a whole remains closed. When the vehicle is driving on a complex road section, the mud, soil, stones and other debris rolled up by the wheels will be directly blocked outside by the anti-seismic bottom plate 3 and the air guide rod 9 at the bottom, effectively preventing the road debris brought up by the vehicle during driving on the complex road section from affecting the internal power battery 2.

[0070] In the embodiment, a sealing plywood 10 is installed at the bottom of each wind guide rod 9, and a plurality of evenly distributed sealing receiving grooves 302 are opened at the bottom of the earthquake-resistant bottom plate 3, and the sealing receiving grooves 302 correspond to the ventilation holes 301 respectively. When the wind guide rod 9 is retracted inside the dustproof net 4, the sealing plywood 10 will be synchronously received inside each sealing receiving groove 302, and the size of the sealing plywood 10 is larger than the size of the bottom of the wind guide rod 9. Therefore, the sealing plywood 10 will wrap the ventilation holes 301, the dustproof net 4 and the wind guide rod 9 from the bottom inside the outer shell 1 at this time, so that stones, The impact of soil blocks on the sealing plywood 10 is borne by the dust net 4, the wind guide rod 9, the anti-seismic bottom plate 3 and the outer shell 1 as a whole, which improves the anti-seismic and anti-impact capabilities of the switching mechanism and the anti-seismic bottom plate 3. At the same time, a circle of waterproof sealing gaskets 11 are installed on the top of the sealing plywood 10, and the wind guide rod 9 is located inside the waterproof sealing gasket 11. When the sealing plywood 10 is stored in the sealing receiving groove 302, the waterproof sealing gasket 11 on the top of the sealing plywood 10 will be compressed and deformed to completely seal the gap between the sealing plywood 10 and the sealing receiving groove 302, thereby improving the sealing of the bottom of the anti-seismic bottom plate 3. Even if the vehicle rolls up the road surface water or directly wades in the water, there is sufficient sealing between the sealing plywood 10 and the sealing receiving groove 302, thereby preventing water seepage inside the outer shell 1 and ensuring the safety of the power battery 2.

[0071] In the embodiment, a plurality of reinforcing main ribs 12 are installed on the top of the seismic base plate 3, and both ends of the reinforcing main ribs 12 are bent upward and fixed on the two sides and the top inner wall of the outer shell 1. A horizontally arranged section of the reinforcing main ribs 12 is sequentially inserted into the interior of each dustproof net 4 and maintains a vertical state with the dustproof net 4. A main rib groove 901 adapted to the reinforcing main ribs 12 is opened on the top of each wind guide rod 9. The presence of the reinforcing main ribs 12 can improve the seismic and impact resistance of the seismic base plate 3 and the outer shell 1. When the outer shell 1 and the seismic base plate 3 are subjected to external impact, the impact will be transmitted to the chassis frame by the seismic base plate 3, the reinforcing main ribs 12 and the outer shell 1, thereby ensuring that the outer shell 1 and the seismic base plate 3 have sufficient structural strength.

[0072] At the same time, when the wind guide rod 9 is received into the dustproof net 4, the part of the reinforced main rib 12 (i.e., the reinforced part) inserted into the dustproof net 4 will be stuck in the main rib groove 901 (i.e., the groove part) at the top of the wind guide rod 9, so that the wind guide rod 9 and the reinforced main rib 12 are assembled together. When the sealing plywood 10 at the bottom of the wind guide rod 9 is impacted, the impact force will also be transmitted to the frame through the reinforced main rib 12, thereby improving the structural strength and seismic and impact resistance of the wind guide rod 9.

[0073] In the embodiment, a plurality of fastening frames 14 are suspended and fixed inside the outer shell 1, and the plurality of fastening frames 14 are distributed around the power battery 2. A locking claw 15 is installed at the bottom of each fastening frame 14, and a plurality of bidirectional sliding sleeves 16 corresponding to the positions of the locking claws 15 are installed at the top of the suspension frame 7.

[0074] In the embodiment, both ends of the inner part of the two-way sliding sleeve 16 are slidably plugged with elastic telescopic sliders 17, a spring is installed inside the two-way sliding sleeve 16, and the spring is fixed between the two elastic telescopic sliders 17. The upper and lower sides of the elastic telescopic slider 17 located outside the two-way sliding sleeve 16 are both inclined surfaces, so that the elastic telescopic slider 17 has a trapezoidal structure, and the locking claw 15 is adapted to the shape of the two-way sliding sleeve 16 and the elastic telescopic slider 17. A plurality of evenly distributed rollers 18 are rotatably installed on the upper and lower inclined surfaces of the elastic telescopic slider 17, and the rollers 18 are all horizontally arranged. When the wind guide rod 9 is switched to the electric push rod 5 and retracted into the dustproof net 4, the elastic on both sides The upper inclined surface of the telescopic slider 17 will first contact the inclined surface at the bottom end of the locking claw 15, and then under the cooperation of the inclined surface and the roller 18, the two elastic telescopic sliders 17 will be compressed and gradually shrink to the inside of the two-way sliding sleeve 16. When the two-way sliding sleeve 16 moves to the inside of the locking claw 15, the two elastic telescopic sliders 17 will gradually slide out of the two-way sliding sleeve 16 again under the elastic action of the internal spring until the two elastic telescopic sliders 17 are completely reset, thereby being stuck in the inside of the locking claw 15, so that the locking claw 15 and the elastic telescopic slider 17 cooperate with each other to position the wind guide rod 9 suspended at the bottom, thereby reducing the burden of switching the electric push rod 5.

[0075] According to a second aspect of an embodiment of the present application, a vehicle is provided, the vehicle includes a battery pack as described above, and the vehicle may be, for example, a new energy vehicle, which is powered by electrical energy provided by the battery pack as described above.

[0076] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. All equivalent structural changes made by using the contents of the present application specification and drawings under the innovative concept of the present application, or directly / indirectly applied in other related technical fields are included in the protection scope of the present application.

Claims

1. A battery pack, characterized in that: The battery pack is used for a vehicle, and the battery pack comprises: An outer shell, the outer shell having a cavity and a wall portion, the wall portion having a plurality of ventilation holes, and the plurality of ventilation holes are connected to the cavity; A plurality of dustproof nets, the plurality of dustproof nets are arranged in one-to-one correspondence with the plurality of ventilation holes, and each of the dustproof nets shields the corresponding ventilation hole; A plurality of closing components, the plurality of closing components are arranged one by one corresponding to the plurality of dustproof nets, each of the closing components is arranged on a side of the corresponding dustproof net away from the cavity, and can move toward the corresponding dustproof net to close the ventilation hole corresponding to the corresponding dustproof net; The closure assembly comprises: A closing plywood, the closing plywood being used to abut against the wall portion to seal the corresponding ventilation hole; An air guide rod, the air guide rod being arranged on a side of the closed joint plate facing the corresponding dustproof net, the side of the air guide rod facing the corresponding dustproof net protruding toward the corresponding dustproof net, so as to guide air toward the corresponding dustproof net; The dustproof net protrudes into the cavity to form a recess on the side of the dustproof net away from the cavity, and the side of the air guide rod facing the corresponding dustproof net is adapted to the recess to form a gap based on the shape of the recess between the closing component and the recess, and the gap allows air to flow in.

2. The battery pack according to claim 1, characterized in that: The dustproof net extends along a first direction, the outer shell further comprises a reinforcing portion arranged on a side of the wall portion facing the cavity, the reinforcing portion extends along a second direction intersecting the first direction, and the reinforcing portion passes through at least some of the dustproof nets among the plurality of dustproof nets; The side of the wind guide rod facing the corresponding dustproof net has a groove, and the groove is used to accommodate part of the reinforcement part when the closing component closes the corresponding dustproof net, and the part of the reinforcement part contacts the inner side of the groove.

3. The battery pack according to claim 2, characterized in that: The reinforcing portion is further connected to two side portions of the outer shell that are opposite to each other in the second direction, and the reinforcing portion is further connected to a side portion of the outer shell that corresponds to the wall portion.

4. The battery pack according to claim 1, characterized in that: The dust-proof net and the corresponding wind guide rod extend along a first direction, and the multiple dust-proof nets are arranged at intervals along a second direction intersecting the first direction. The wind guide rod has an air inlet hole, and the air inlet hole connects the space on both sides of the wind guide rod in the second direction of the wind guide rod.

5. The battery pack according to any one of claims 1 to 4, characterized in that: The battery pack also includes a driving component. Each of the dustproof nets has a through hole. For each of the dustproof nets, the driving component is passed through the through hole and connected to the corresponding closing component. The driving component is disposed in the cavity.

6. The battery pack according to claim 5, characterized in that: The battery pack also includes a locking assembly, which is disposed in the cavity and connected to the outer shell, and is used to detachably lock the driving assembly when the driving assembly drives the closing assembly to close the ventilation hole corresponding to the corresponding dustproof net.

7. A vehicle, characterized in that: The vehicle comprises the battery pack according to any one of claims 1 to 6.

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