Protection device
By designing a protective device in electric vehicles that includes sliding and storage components, and automatically releasing fire extinguishing materials using inertia and gravity, the problem of battery fires during side or topple operations is solved, improving the reliability and safety of battery use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-03-20
AI Technical Summary
When an electric vehicle overturns or falls over due to a traffic accident, the power battery is prone to catching fire, causing significant damage.
Design a protective device including a first mounting component, a first sliding component, and a storage component. Utilize inertia and gravity to automatically activate the sliding component when the vehicle rolls over or overturns, releasing fire extinguishing material to extinguish the fire in the battery cell.
This effectively reduces the possibility of the battery cells catching fire after being tipped over or overturned, thus improving the reliability and safety of the battery.
Smart Images
Figure CN224020935U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of battery protection, in particular to a protection device. BACKGROUND
[0002] With the development of society, power batteries have been widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, and electric vehicles, as well as military equipment and aerospace. In the use process of electric vehicles, side overturning or overturning may occur due to traffic accidents, etc., which may cause the power battery to catch fire and cause greater damage. CONTENT OF THE UTILITY MODEL
[0003] In view of the above problems, the present application provides a protection device which can alleviate the problem of fire damage caused by side overturning or overturning of electric vehicles during use.
[0004] In a first aspect, the present application provides a protection device comprising a first mounting member, a first sliding member and a storage member. The first mounting member is configured with a first cavity, the first cavity is provided with an inlet and an outlet; the first sliding member is contained in the first cavity; the storage member is configured with a storage cavity communicating with the inlet, and the storage cavity contains fire extinguishing material; wherein the first sliding member can slide along the first preset direction relative to the cavity wall of the first cavity, so that the outlet and the inlet are communicated or not communicated.
[0005] The protection device provided by the embodiment of the present application is installed on the outer periphery of the power battery of the vehicle. When the vehicle overturns or overturns due to traffic accidents during use, the first sliding member slides along the first preset direction relative to the cavity wall of the first cavity under the action of inertia, so that the outlet and the inlet are communicated, and the fire extinguishing material can be sprayed from the outlet to the outer periphery of the battery, thereby extinguishing the battery and reducing the possibility of further fire burning after the vehicle overturns or overturns, thereby reducing the damage of the accident and effectively improving the use reliability of the battery.
[0006] In some embodiments, the first sliding member can switch from the first position to the second position when it slides relative to the cavity wall of the first cavity; in the first position, at least one of the outlet and the inlet is covered and sealed by the first sliding member; in the second position, the outlet and the inlet are communicated through the first cavity, so that the fire extinguishing material is sprayed from the outlet.
[0007] When the vehicle is in a rollover or overturning situation, the first sliding member then slides along the first preset direction relative to the cavity wall of the first cavity under the action of inertia, so that the first sliding member moves from the first position to the second position, so that the feed port and the discharge port are communicated, and then the fire extinguishing material can pass through the feed port, the first cavity and the discharge port in turn, and is sprayed out from the discharge port to the outer periphery of the battery cell, thereby performing fire extinguishing operation on the battery cell.
[0008] In some embodiments, the protection device comprises a second mounting member; the second mounting member is configured with a second cavity, the second cavity is communicated with the first cavity, and the extension direction of the second cavity is arranged at an angle with the extension direction of the first cavity; the first sliding member has a first end and a second end arranged in the first preset direction; in the second position, the first end exits the covering and sealing of at least one of the discharge port and the feed port, and the second end at least partially extends into the second cavity through the communication between the second cavity and the first cavity.
[0009] By arranging the second mounting member and communicating the second cavity of the second mounting member with the first cavity, a certain movement space of the first sliding member can be formed through the second cavity, so that in the second position, the second end of the first sliding member can at least partially extend into the second cavity. And because the extension direction of the second cavity is arranged at an angle with the extension direction of the first cavity, the movement of the structure in the second cavity is not easy to interfere with the movement of the first sliding member.
[0010] In some embodiments, the protection device comprises a second sliding member; the second sliding member is accommodated in the second cavity and can slide along the second preset direction relative to the cavity wall of the second cavity; the outer side wall of the second sliding member is configured with a clamping groove; the second sliding member has a third position and a fourth position relative to the second cavity; in the third position, the second end of the first sliding member is separated from the clamping groove, so that the first sliding member is located in the first position; in the fourth position, the second end of the first sliding member can at least partially extend into the clamping groove, so that the first sliding member is located in the second position.
[0011] By arranging the second sliding member and arranging the clamping groove on the outer periphery of the second sliding member, and when the second sliding member slides relative to the second cavity, the second sliding member can be in different positions, so that the second end of the first sliding member at least partially extends into the clamping groove or does not extend into the clamping groove, thereby realizing the switching of the first sliding member from the first position to the second position. In this process, the movement of the second sliding member can be realized by the gravity of the second sliding member itself, and the whole structure is relatively simple and fast in response speed.
[0012] In some embodiments, the second end of the first sliding member is configured with a clamping protrusion; in the fourth position, the clamping protrusion is clamped with the clamping groove.
[0013] By providing a snap-fit protrusion at the second end of the first sliding member, and enabling the snap-fit protrusion to engage with the snap-fit groove in the fourth position, the first sliding member is prevented from sliding further by the mutual engagement of the snap-fit protrusion and the snap-fit groove. This ensures that when the first sliding member switches from the first position to the second position, it can be effectively stabilized in the second position, allowing the fire extinguishing material to be continuously sprayed from the discharge port to the outer periphery of the battery cell, effectively ensuring the sustainability of fire extinguishing.
[0014] In some embodiments, the protective device further includes a movable member disposed within the second cavity; in the third position, the movable member is separated from the second sliding member; under preset conditions, the movable member can approach the second sliding member to abut against the second sliding member and drive the second sliding member to slide relative to the cavity wall of the second cavity, so that the second sliding member switches from the third position to the fourth position.
[0015] By incorporating a movable component within the second cavity, and ensuring that the movable component separates from the second sliding component in the third position, the movable component, due to inertia or gravity, can approach and abut against the second sliding component in the event of a collision, rollover, or overturning. This causes the second sliding component to slide relative to the cavity wall, allowing it to switch from the third to the fourth position. Simultaneously, the first sliding component, moving along a first preset direction, extends its side closest to the second cavity into the engaging groove. This rapid movement of the second sliding component, utilizing the movable component's own inertia and gravity, results in a fast response time and superior fire extinguishing protection.
[0016] In some embodiments, the protective device further includes a first elastic member; the first elastic member is housed in the second cavity and deformably abuts against the side of the second sliding member opposite to the movable member and the bottom wall of the second cavity in a second preset direction.
[0017] By setting a first elastic element between the side of the second slider away from the movable member and the bottom wall of the second cavity, under preset conditions, when the movable member moves closer to and abuts against the second slider under the action of inertia or gravity to push the second slider to move, the second slider will also be subjected to an elastic force applied by the first elastic element toward the movable member. This makes the force on the second slider more balanced, the movement more stable, and the speed controllable. It also reduces the possibility that when the second slider moves too fast, the locking groove also moves too fast, and the side of the first slider closer to the second slider cannot lock with the locking groove in time.
[0018] In some embodiments, the protection device further comprises a second elastic member; the second elastic member is accommodated in the first cavity and abuts against a side of the first sliding member away from the second cavity; the second elastic member is configured to apply an elastic force to the first sliding member to move towards the side of the second cavity.
[0019] By arranging the second elastic member on the side of the first sliding member away from the second cavity and allowing the second elastic member to apply an elastic force to the first sliding member to move towards the side of the second cavity, the first sliding member has a tendency to move towards the side of the second cavity when in the first position. When the vehicle is in a collision, rollover or overturning situation, the second sliding member slides relative to the cavity wall of the second cavity under the action of inertia or gravity, so that the clamping groove can move to the position where the second cavity and the first cavity are in communication. At this time, the second elastic member can push the first sliding member to move, so that the second end of the first sliding member can quickly extend into the clamping groove.
[0020] In some embodiments, the number of second mounting members is two, and the two second mounting members are arranged at intervals; along the first predetermined direction, the two ends of the first mounting member are respectively in communication with the second cavities of the two second mounting members; the number of first sliding members is two, and the two first sliding members are arranged at intervals along the first predetermined direction.
[0021] By arranging two second mounting members at intervals, the movement of the two first sliding members in the first mounting member can be controlled through the two second mounting members. Thus, the possibility of fire extinguishing failure caused by the movement of any first sliding member when the vehicle is in different rollover directions is reduced. In addition, the two first sliding members can control the two storage members, so that the battery can be protected by two different fire extinguishing materials, further reducing the possibility of self-ignition of the battery, and the reliability of the battery is higher.
[0022] In some embodiments, the side of each of the two second mounting members close to the discharge port is provided with a clamping member; and the two clamping members together enclose an installation space.
[0023] By arranging the two clamping members to enclose an installation space, the battery to be protected can be accommodated in the installation space, and the two oppositely arranged end faces of the battery can be clamped by the two clamping members. Thus, the installation and fixation of the protection device relative to the battery are achieved.
[0024] In some embodiments, the protection device further comprises a spray head; the spray head is installed at the discharge port and in communication with the discharge port, and the spray opening of the spray head faces the side of the installation space.
[0025] By setting the spray head at the discharge port and making the spray opening of the spray head face the installation space side, the area that the fire extinguishing material can be sprayed through the spray head is enlarged, and the outer peripheral surface of the battery cell is more likely to be covered, so that better fire extinguishing protection effect on the battery cell is achieved.
[0026] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS
[0027] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered limiting on the present application. Moreover, in all the drawings, the same reference numerals represent the same parts. In the drawings:
[0028] Figure 1 The schematic diagram of the protection device provided for some embodiments of the present application.
[0029] Figure 2 The internal structure of the protection device shown in Figure 1
[0030] Figure 3 The top view of the protection device shown in Figure 1
[0031] The first schematic diagram of the protection device shown in Figure 4 Figure 1 The first schematic diagram of the protection device shown in
[0032] Figure 5 The second schematic diagram of the protection device shown in Figure 4
[0033] The second schematic diagram of the protection device shown in Figure 6 Figure 4 The third schematic diagram of the protection device shown in
[0034] Figure 7 Figure 1 The third schematic diagram of the protection device shown in
[0035] Figure 8 The third schematic diagram of the protection device shown in Figure 1 The second schematic view of the protection device shown installed on the battery cell, the first sliding member being in the first position and the second sliding member being in the third position.
[0036] The reference signs in the detailed description of the embodiments are as follows:
[0037] 100 - first mounting member; 110 - first cavity; 111 - inlet; 112 - outlet;
[0038] 200 - first sliding member; 210 - clamping protrusion;
[0039] 300 - storage compartment; 310 - storage cavity;
[0040] 400 - second mounting member; 410 - second cavity; 411 - clamping slot;
[0041] 500 - second sliding member; 510 - clamping slot;
[0042] 600 - movable member;
[0043] 700 - first elastic member;
[0044] 800 - second elastic member;
[0045] 900 - clamping member;
[0046] 1000 - spray head; 1100 - spray opening;
[0047] 2000 - battery cell. DETAILED DESCRIPTION
[0048] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.
[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.
[0050] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.
[0051] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0052] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0053] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).
[0054] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0055] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0056] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.
[0057] During the use of electric vehicles, accidents and other reasons can cause the vehicles to roll over or overturn, making the power battery prone to catching fire and causing significant damage. Based on this consideration, to mitigate the problem of fires caused by rollovers or overturns in electric vehicles, this application provides a protective device. This device is installed on the outer periphery of the battery cell and can activate and extinguish a fire when the vehicle rolls over or overturns, thereby reducing the probability of the power battery catching fire during such events and improving the reliability of the power battery.
[0058] The protection device provided in this application embodiment can protect a power battery, which can be a primary battery or a secondary battery. It can be one cell within a power battery or an assembly of multiple cells. The power battery can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. Vehicles are not limited to electric bicycles, electric motorcycles, electric cars, and other electric vehicles.
[0059] Please see Figure 1 and combined Figure 2 as well as Figures 3-8 , Figure 1 A schematic diagram of a protection device provided in some embodiments of this application is shown. Figure 2 It shows Figure 1 The diagram shows the internal structure of the protective device. Figure 3 It shows Figure 1 A top view of the protective device shown. Figure 4 It shows Figure 1 The diagram shows the first position of the first sliding member 200 and the third position of the second sliding member 500 when the protection device is installed on the battery cell 2000. Figure 5 It shows Figure 4 The diagram shows the first position of the first slider 200 and the second slider 500 when the protection device is installed on the battery cell 2000. Figure 6 It shows Figure 4 The diagram shows a second schematic showing the first slider 200 in the second position and the second slider 500 in the fourth position when the protection device is installed on the battery cell 2000. Figure 7 It shows Figure 1A third schematic view of the protection device shown installed on the battery cell 2000, with the first sliding member 200 in the second position and the second sliding member 500 in the fourth position. Figure 8 A second schematic view of the protection device shown installed on the battery cell 2000, with the first sliding member 200 in the first position and the second sliding member 500 in the third position. Figure 1 A third schematic view of the protection device shown installed on the battery cell 2000, with the first sliding member 200 in the second position and the second sliding member 500 in the fourth position.
[0060] Some embodiments of the present application provide a protection device, which includes a first mounting member 100, a first sliding member 200, and a storage member. The first mounting member 100 is configured with a first cavity 110, which is provided with an inlet 111 and an outlet 112; the first sliding member 200 is accommodated in the first cavity 110; and the storage member is configured with a storage cavity 310, which is in communication with the inlet 111 and contains fire-extinguishing material therein. The first sliding member 200 can slide along a first preset direction relative to the cavity wall of the first cavity 110, so as to make the outlet 112 in communication with or out of communication with the inlet 111. Exemplarily, the first preset direction can be the axial extension direction of the first cavity 110, for example, the y direction in Figure 2 .
[0061] The first mounting member 100 can be a structure with any shape of cavity, such as a cubic structure or a columnar structure, without special limitation.
[0062] The first sliding member 200 can be a slanting truncated cylinder structure as shown in Figure 2 and Figures 4-8 , or other structures, without special limitation on its appearance, as long as it can be adapted to the appearance of the first cavity 110 and can slide along the first preset direction relative to the cavity wall of the first cavity 110.
[0063] The storage member can be integrally processed and formed with the first mounting member 100, for example, as shown in Figure 1 , so that the processing of the two is more convenient. Of course, the two can also be separate structures, without special limitation. The storage member can be designed in a modular and replaceable manner.
[0064] The fire-extinguishing material can be inert gas, phase-change cooling liquid, and aerosol composite medium, which can comprehensively realize the functions of cooling, suffocation, and chemical inhibition.
[0065] Exemplarily, when the outlet 112 is in communication with the inlet 111, the first sliding member 200 is in the first position relative to the first cavity 110; and when the outlet 112 is out of communication with the inlet 111, the first sliding member 200 is in the second position relative to the first cavity 110.
[0066] The protective device provided in this application embodiment can be installed in various ways relative to the outer periphery of the battery cell 2000. In some embodiments, the protective device can be installed on the outer periphery of the battery cell 2000 as follows: Figure 4 The installation method shown indicates that the normal forward direction of the vehicle is... Figure 4 As shown in the y-direction, the protection device is installed on the front side of the battery cell 2000. When a vehicle collision occurs, the first sliding member 200 will move under the action of external force, thereby causing the first sliding member 200 in the protection device to... Figure 4 The first position shown is moved to Figure 5 The second position shown. When the vehicle rolls over, that is, the entire body along... Figure 4 When rotated 90° clockwise, the battery cell 2000 and the protection device will flip synchronously, thereby causing the battery cell 2000 and the protection device to self-rotate. Figure 4 The state shown is flipped to Figure 6 The state shown. In some embodiments, the protection device is installed on the outer periphery of the cell 2000 as shown in the figure. Figure 8 The installation method shown indicates that the normal forward direction of the vehicle is... Figure 8 As shown in the y-direction, the protection device is installed directly above the battery cell 2000. When the vehicle overturns, meaning the entire vehicle body moves along... Figure 8 Rotating the battery cell 2000 and the protection device 180° clockwise or counterclockwise will cause them to flip synchronously, thus enabling the battery cell 2000 and the protection device to self-rotate. Figure 8 The state shown is flipped to Figure 6 The state shown. Of course, in some embodiments, the installation position of the protection device relative to the outer periphery of the battery cell 2000 may also be 30°, 45°, or 60° to the left front or left rear of the battery cell 2000, etc., and there is no special limitation on this.
[0067] The protective device provided in this application embodiment is installed on the outer periphery of the battery cell 2000 of the vehicle's power battery. When the vehicle is in use, if it rolls over or overturns due to traffic accidents or other reasons, the first sliding member 200 will slide relative to the cavity wall of the first cavity 110 along the first preset direction, thereby connecting the discharge port 112 with the inlet port 111. This allows the fire extinguishing material to be sprayed from the discharge port 112 to the outer periphery of the battery cell 2000, thereby extinguishing the fire in the battery cell 2000. This reduces the possibility of the battery cell 2000 catching fire after the vehicle rolls over or overturns, thereby reducing accident damage and effectively improving the reliability of the battery cell 2000.
[0068] The protection device provided in this application embodiment is completely independent of the power supply and electronic control, and can be automatically activated in the event of power failure.
[0069] The structure of the protection device is described in detail below.
[0070] Referring to Figure 1 in combination with Figure 2 and Figures 3-8 In some embodiments, the first sliding member 200 can switch from the first position to the second position when the first sliding member 200 slides along the first preset direction relative to the cavity wall of the first cavity 110. For example, the first preset direction can be the axial extension direction of the first cavity 110, for example, the y direction in Figure 2 In the first position, at least one of the discharge port 112 and the feed port 111 is covered and sealed by the first sliding member 200 (as shown in Figure 4 and Figure 8 In the second position, the discharge port 112 and the feed port 111 are connected in communication through the first cavity 110, so that the fire extinguishing material is sprayed out of the discharge port 112 (as shown in Figures 5-7 ).
[0071] When the vehicle is in use, if the vehicle is rolled over or overturned due to a traffic accident or the like, at this time, the first sliding member 200 will slide along the first preset direction relative to the cavity wall of the first cavity 110, so that the first sliding member 200 moves from the first position to the second position, so that the feed port 111 and the discharge port 112 are connected in communication, and then the fire extinguishing material can pass through the feed port 111, the first cavity 110 and the discharge port 112 in sequence, and is sprayed out of the discharge port 112 to the outer periphery of the battery cell 2000, thereby performing fire extinguishing operation on the battery cell 2000, reducing the possibility of further fire burning of the battery cell 2000 after the vehicle is rolled over or overturned.
[0072] Referring to Figures 1-8 In some embodiments, the protection device includes a second mounting member 400; the second mounting member 400 is configured with a second cavity 410 (as shown in Figure 2 and Figures 4-8 The second cavity 410 is connected in communication with the first cavity 110, and the extension direction of the second cavity 410 is arranged at an angle with the extension direction of the first cavity 110. For example, the extension direction of the second cavity 410 can be 90° with the extension direction of the first cavity 110. The first sliding member 200 has a first end and a second end arranged along the first preset direction. In the second position, the first end exits the covering and sealing of at least one of the discharge port 112 and the feed port 111, and the second end can at least partially extend into the second cavity 410.
[0073] The second mounting member 400 can be any shape of structure with a cavity. For example, a cubic structure or a columnar structure, etc., which is not specially limited.
[0074] The extension direction of the second cavity 410 can be 90°, 60° or 75°, etc. relative to the extension direction of the first cavity 110, and is not specially limited.
[0075] The second mounting member 400 is arranged, and the second cavity 410 of the second mounting member 400 is communicated with the first cavity 110, so that the first sliding member 200 is provided with a movement space through the second cavity 410, and the second end of the first sliding member 200 can at least partially extend into the second cavity 410 in the second position. The extension direction of the second cavity 410 is arranged at an angle relative to the extension direction of the first cavity 110, so that the movement of the structure in the second cavity 410 does not easily interfere with the movement of the first sliding member 200.
[0076] Please refer to Figure 2 and Figures 4-8 In some embodiments, the protection device comprises a second sliding member 500; the second sliding member 500 is arranged in the second cavity 410 and can slide relative to the cavity wall of the second cavity 410 along a second preset direction; for example, the second preset direction can be the axial extension direction of the second cavity 410, for example, the z direction in Figure 2 The outer side wall of the second sliding member 500 is provided with a clamping groove 510; the second sliding member 500 has a third position and a fourth position relative to the second cavity 410; in the third position, the second end of the first sliding member 200 is separated from the clamping groove 510, so that the first sliding member 200 is located in the first position; in the fourth position, the second end of the first sliding member 200 can at least partially extend into the clamping groove 510, so that the first sliding member 200 is located in the second position.
[0077] The second sliding member 500 can be a cylindrical structure as shown in Figure 2 and Figures 4-8 and can also be other structures, and is not specially limited.
[0078] The clamping groove 510 formed by the outer side wall of the second sliding member 500 can be a groove with at least one inclined surface as shown in Figure 2 and Figures 4-8 so that when the second sliding member 500 slides along the second preset direction, the first sliding member 200 can not easily slide out of the clamping groove 510 under the limiting action of the inclined surface, and the retention effect of the first sliding member 200 in the first position is better.
[0079] The shape of the clamping groove 510 can be a triangular structure as shown in the projection parallel to the axial plane of the second sliding member 500. Figure 2 and Figures 4-6 and can also be a triangular structure as shown in the projection parallel to the axial plane of the second sliding member 500. Figure 7The projection along the axial plane parallel to the second sliding member 500 is a trapezoidal structure.
[0080] By setting the second sliding member 500 and the clamping groove 510 on the outer periphery of the second sliding member 500, and when the second sliding member 500 slides relative to the second cavity 410, the second sliding member 500 can be in different positions, so that the second end of the first sliding member 200 is at least partially inserted into the clamping groove 510 or not inserted into the clamping groove 510, so that the first sliding member 200 is switched from the first position to the second position. In this process, the movement of the second sliding member 500 can be achieved by the gravity of the second sliding member 500 itself, the whole structure is relatively simple, and the response speed is relatively fast.
[0081] Please refer to Figure 5 and Figure 6 In some embodiments, the second end of the first sliding member 200 is configured with a clamping protrusion 210; in the fourth position, the clamping protrusion 210 is clamped with the clamping groove 510.
[0082] When the first sliding member 200 is a truncated cylindrical structure, the clamping protrusion 210 can be formed at the truncated end of the truncated cylindrical structure, which is relatively simple to process. Of course, the clamping protrusion 210 can also be other shapes, such as a protruding block structure formed on the end face of the first sliding member 200, etc., which is not specially limited.
[0083] By setting the clamping protrusion 210 on the second end of the first sliding member 200, and making the clamping protrusion 210 capable of clamping with the clamping groove 510 in the fourth position, so that the limit of the clamping protrusion 210 and the clamping groove 510 is matched with each other, avoiding further sliding of the first sliding member 200, and then making the first sliding member 200 effectively stable at the second position when switching from the first position to the second position, and then making the fire extinguishing material be able to continuously spray from the discharge port 112 to the outer periphery of the battery cell 2000, effectively ensuring the sustainability of fire extinguishing.
[0084] Please refer to Figure 2 and Figures 4-8 In some embodiments, the protection device further comprises a movable member 600 accommodated in the second cavity 410; in the third position, the movable member 600 is separated from the second sliding member 500; under the preset condition, the movable member 600 can be close to the second sliding member 500 to abut with the second sliding member 500, and drive the second sliding member 500 to slide relative to the cavity wall of the second cavity 410, so that the second sliding member 500 is switched from the third position to the fourth position.
[0085] The movable member 600 can be, for example Figure 2 , Figures 4-6 and Figure 8The spherical structure shown can also be a cubic structure as shown, without special limitation. Figure 7 The cubic structure shown can also be a cubic structure as shown, without special limitation.
[0086] The preset condition can be a collision, rollover or overturning of the vehicle.
[0087] By providing the movable piece 600 in the second cavity 410, and making the movable piece 600 separate from the second sliding piece 500 in the third position, when the vehicle is in a collision, rollover or overturning condition, the movable piece 600 can approach the second sliding piece 500 due to inertia or gravity until it abuts against the second sliding piece 500, and drive the second sliding piece 500 to slide relative to the cavity wall of the second cavity 410, so that the second sliding piece 500 is switched from the third position to the fourth position, and at this time the first sliding piece 200 can extend into the clamping groove 510 on the side close to the second cavity 410 during movement in the first preset direction. In this way, the movement of the second sliding piece 500 is quickly started by means of the inertial and gravitational movement of the movable piece 600, so that the response speed of the protection device is faster and the fire extinguishing protection effect is better.
[0088] Exemplarily, when the initial state of the protection device is as shown in Figure 4 , the normal forward direction of the vehicle is the y direction as shown in Figure 4 , when the vehicle is in a collision condition, the movable piece 600 moves forward along the y direction due to inertia, so that the entire protection device changes from the state as shown in Figure 4 to the state as shown in Figure 4 . Figure 5
[0089] Exemplarily, when the initial state of the protection device is as shown in Figure 4 , the normal forward direction of the vehicle is the y direction as shown in Figure 4 , when the vehicle is in a rollover condition, the entire vehicle body rotates clockwise by 90° along the x direction, so that the battery cell 2000 and the protection device are synchronously overturned, and the movable piece 600 moves toward the side close to the second sliding piece 500 under the action of gravity, so that the entire protection device changes from the state as shown in Figure 4 to the state as shown in Figure 4 . Figure 6
[0090] Exemplarily, when the initial state of the protection device is as shown in Figure 8 , the normal forward direction of the vehicle is the y direction as shown in Figure 8 , when the vehicle is in an overturning condition, the entire vehicle body rotates counterclockwise by 90° along the x direction, so that the battery cell 2000 and the protection device are synchronously overturned, and the movable piece 600 moves toward the side close to the second sliding piece 500 under the action of gravity, so that the entire protection device changes from the state as shown in Figure 8 When the protection device is rotated 180° clockwise or counterclockwise, the battery cell 2000 and the protection device are flipped synchronously, and the movable piece 600 moves toward the side close to the second sliding piece 500 under the action of gravity, so that the entire protection device is flipped from the state shown in FIG. 6A to the state shown in FIG. 6B. Figure 8 When the protection device is rotated 180° clockwise or counterclockwise, the battery cell 2000 and the protection device are flipped synchronously, and the movable piece 600 moves toward the side close to the second sliding piece 500 under the action of gravity, so that the entire protection device is flipped from the state shown in FIG. 6A to the state shown in FIG. 6B. Figure 6 When the protection device is rotated 180° clockwise or counterclockwise, the battery cell 2000 and the protection device are flipped synchronously, and the movable piece 600 moves toward the side close to the second sliding piece 500 under the action of gravity, so that the entire protection device is flipped from the state shown in FIG. 6A to the state shown in FIG. 6B.
[0091] The protection device provided in the embodiments of the present application can start the protection device, automatically release the fire extinguishing material, and reduce the possibility of thermal runaway diffusion of the battery cell 2000 by arranging the movable piece 600, so that the movable piece 600 moves under the action of inertia or gravity when the vehicle is in a collision, rollover, or overturning state.
[0092] In some embodiments, the side of the second sliding piece 500 close to the movable piece 600 in the second cavity 410 is filled with a damping material, so that the movable piece 600 is not easily triggered when subjected to slight vibration, and the possibility of false triggering of the protection device caused by slight vibration or short-term jolting of the vehicle is reduced.
[0093] Please refer to Figure 2 and Figures 4-8 In some embodiments, the outer periphery of the movable piece 600 is further provided with a clamping groove 411 when in the third position. The clamping groove 411 can be the inner side wall of the hollow elastic piece, or other concave-convex structures, etc. By arranging the clamping groove 411, the friction between the movable piece 600 and the cavity wall of the second cavity 410 is increased through the clamping groove 411, and the possibility of false triggering of the protection device caused by slight vibration or short-term jolting of the vehicle is reduced.
[0094] Please refer to Figure 2 and Figures 4-8 In some embodiments, the protection device further comprises a first elastic piece 700; the first elastic piece 700 is contained in the second cavity 410 and is deformable to abut between the side of the second sliding piece 500 away from the movable piece 600 and the bottom wall of the second cavity 410 along a second preset direction.
[0095] The first elastic piece 700 can be a telescopic spring or a deformable sponge, etc.
[0096] The first elastic member 700 is arranged between the second side of the second sliding member 500, which is away from the movable member 600, and the bottom wall of the second cavity 410, so that when the movable member 600 is close to and abuts against the second sliding member 500 under the preset condition, the second sliding member 500 is also subjected to the elastic force of the first elastic member 700, which is directed to the side of the movable member 600, so that the force on the second sliding member 500 is more balanced, the movement is more stable, the speed is controllable, and the possibility that the first sliding member 200 cannot be quickly connected with the clamping groove 510 on the side of the second sliding member 500 is reduced.
[0097] Please refer to Figure 2 and Figures 4-8 In some embodiments, the protection device further comprises a second elastic member 800; the second elastic member 800 is arranged in the first cavity 110 and abuts against the side of the first sliding member 200, which is away from the second cavity 410; the second elastic member 800 is used to apply an elastic force to the first sliding member 200, which is directed to the side of the second cavity 410.
[0098] The second elastic member 800 can be a telescopic spring or a deformable sponge.
[0099] The second elastic member 800 is arranged on the side of the first sliding member 200, which is away from the second cavity 410, and applies an elastic force to the first sliding member 200, which is directed to the side of the second cavity 410, so that the first sliding member 200 has a tendency to move to the side of the second cavity 410 when it is in the first position; when the vehicle is in a collision, rollover or overturning situation, the second sliding member 500 slides relative to the cavity wall of the second cavity 410 under the action of inertia or gravity, so that the clamping groove 510 can move to the position where the second cavity 410 and the first cavity 110 are connected; at this time, the second elastic member 800 can push the first sliding member 200 to move, so that the second end of the first sliding member 200 can quickly extend into the clamping groove 510.
[0100] Please refer to Figure 2 and Figures 4-8 In some embodiments, the number of the second mounting members 400 is two, and the two second mounting members 400 are arranged at intervals; along the first preset direction, the two ends of the first mounting member 100 are respectively connected with the second cavities 410 of the two second mounting members 400; the number of the first sliding members 200 is two, and the two first sliding members 200 are arranged at intervals along the first preset direction.
[0101] When the number of the first sliding members 200 is two, the number of the storage members can also be two, and the extinguishing materials contained in the two storage members can be different, so that the extinguishing protection operation can be performed on the battery cell 2000 by different extinguishing materials.
[0102] When the number of the first sliding members 200 is two, the second sliding member 500 can be arranged between the two first sliding members 200.
[0103] By arranging two second mounting members 400 and spacing the two second mounting members 400, the movement of the two first sliding members 200 in the first mounting member 100 can be controlled by the two second mounting members 400 respectively, so that the possibility of extinguishing failure caused by the movement of any one first sliding member 200 when the vehicle rolls in different directions is reduced, and the two storage members can be controlled by the two first sliding members 200, so that the battery cell 2000 can be protected by two different extinguishing materials, further reducing the possibility of spontaneous combustion of the battery cell 2000, and the reliability of the battery cell 2000 is higher.
[0104] Please refer to Figure 2 and Figures 4-8 In some embodiments, the two second mounting members 400 are each provided with a clamping member 900 near one side of the discharge port 112; the two clamping members 900 jointly form an installation space.
[0105] The clamping member 900 can be a clamping spring or other clamping structure.
[0106] By jointly forming an installation space by the two clamping members 900, the battery cell 2000 that needs to be protected can be accommodated in the installation space, and the two opposite end faces of the battery cell 2000 are clamped by the two clamping members 900, so that the installation and fixation of the protection device relative to the battery cell 2000 are achieved.
[0107] Please refer to Figure 1 and Figures 2-8 In some embodiments, the protection device further comprises a spray head 1000; the spray head 1000 is installed at the discharge port 112 and communicates with the discharge port 112, and the spray opening 1100 of the spray head 1000 faces one side of the installation space.
[0108] The spray head 1000 can be gradually expanded from one side of the discharge port 112 to the side of the battery cell 2000, so that the extinguishing material sprayed from the discharge port 112 can be sprayed to the multiple outer surfaces of the battery cell 2000 as much as possible, and the extinguishing protection effect on the battery cell 2000 is better.
[0109] By setting the spray head 1000 at the discharge port 112 and making the spray port 1100 of the spray head 1000 face the installation space side, the area that can be sprayed by the fire extinguishing material through the spray head 1000 is enlarged, and the outer peripheral surface of the battery cell 2000 is more likely to be covered, so that better fire extinguishing protection effect on the battery cell 2000 is achieved.
[0110] Please refer to Figure 2 and in combination Figure 4 , the protection device provided by the embodiment of the application comprises a first mounting member 100, a first sliding member 200, a storage member, a second mounting member 400, a second sliding member 500, a movable member 600, a first elastic member 700, a second elastic member 800 and a clamping member 900. The first mounting member 100 is configured with a first cavity 110, and the first cavity 110 is provided with an inlet port 111 and a discharge port 112; the first sliding member 200 is accommodated in the first cavity 110, and the storage member is configured with a storage cavity 310 that is in communication with the inlet port 111, and the storage cavity 310 contains fire extinguishing material; wherein the first sliding member 200 can slide along a first preset direction relative to the cavity wall of the first cavity 110; to switch from a first position to a second position; for example, the first preset direction can be the axial extension direction of the first cavity 110, for example Figure 8 y direction in the figure; in the first position, at least one of the discharge port 112 and the inlet port 111 is covered and sealed by the first sliding member 200 (as shown in Figures 5-7 and Figure 2 ); in the second position, the discharge port 112 and the inlet port 111 are in communication through the first cavity 110, so that the fire extinguishing material is sprayed out from the discharge port 112 (as shown in Figures 4-8 ).
[0111] The second mounting member 400 is configured with a second cavity 410 (as shown in Figure 2 and ), the second cavity 410 is in communication with the first cavity 110, and the extension direction of the second cavity 410 is arranged at an angle with the extension direction of the first cavity 110; the first sliding member 200 has a first end and a second end arranged along the first preset direction; the second sliding member 500 is accommodated in the second cavity 410 and can slide along a second preset direction relative to the cavity wall of the second cavity 410; for example, the second preset direction can be the axial extension direction of the second cavity 410, for example The z direction in the figure; the outer side wall of the second sliding piece 500 is configured with a clamping groove 510; the second sliding piece 500 has a third position and a fourth position relative to the second cavity 410; in the third position, the movable piece 600 is separated from the second sliding piece 500, and the second end of the first sliding piece 200 is separated from the clamping groove 510, so that the first sliding piece 200 is located in the first position; under a preset condition, the movable piece 600 can be close to the second sliding piece 500 to abut against the second sliding piece 500, and drive the second sliding piece 500 to slide relative to the cavity wall of the second cavity 410, so that the second sliding piece 500 is switched from the third position to the fourth position, and then the second end of the first sliding piece 200 can at least partially extend into the clamping groove 510, so that the first sliding piece 200 is located in the second position.
[0112] The first elastic piece 700 is contained in the second cavity 410 and elastically abuts between the side of the second sliding piece 500 away from the movable piece 600 and the bottom wall of the second cavity 410 along the second preset direction. The number of the second mounting piece 400 is two, and the two second mounting pieces 400 are arranged at intervals; along the first preset direction, the two ends of the first mounting piece 100 are respectively communicated with the second cavities 410 of the two second mounting pieces 400; the number of the first sliding piece 200 is two, and the two first sliding pieces 200 are arranged at intervals along the first preset direction. The second elastic piece 800 is contained in the first cavity 110 and abuts between the two first sliding pieces 200; the second elastic piece 800 is used to apply an elastic force to the first sliding piece 200 moving toward the side of the second cavity 410. The side of the two second mounting pieces 400 close to the discharge port 112 is provided with a clamping piece 900; the two clamping pieces 900 jointly enclose to form an installation space.
[0113] The protection device provided by the embodiment of the application is installed on the outer periphery of the battery cell 2000 of the vehicle. When the vehicle is overturned or turned over due to traffic accidents or other reasons during use, at this time, the first sliding piece 200 will slide relative to the cavity wall of the first cavity 110 along the first preset direction, so that the first sliding piece 200 is switched from the first position to the second position, and then the fire extinguishing material can pass through the feeding port 111, the first cavity 110 and the discharge port 112 in turn, and is sprayed out from the discharge port 112 to the outer periphery of the battery cell 2000, so as to perform fire extinguishing operation on the battery cell 2000, reduce the possibility of further fire combustion of the battery cell 2000 after the vehicle is overturned or turned over, and reduce the accident damage, effectively improve the use reliability of the battery cell 2000.
[0114] By setting the second mounting member 400 and the second sliding member 500, and setting the clamping groove 510 on the outer periphery of the second sliding member 500, and when the second sliding member 500 slides relative to the second cavity 410, the second sliding member 500 can be in different positions, so that the second end of the first sliding member 200 is at least partially extended into the clamping groove 510 or not extended into the clamping groove 510, so that the first sliding member 200 is switched from the first position to the second position. In this process, the movement of the second sliding member 500 can be realized by the gravity of the second sliding member 500 itself, the whole structure is relatively simple, and the response speed is relatively fast.
[0115] By setting the movable member 600 in the second cavity 410, and making the movable member 600 separate from the second sliding member 500 in the third position, when the vehicle is in the case of collision, rollover or overturn, at this time the movable member 600 can be close to the second sliding member 500 due to inertia or gravity, and abut against the second sliding member 500, and drive the second sliding member 500 to slide relative to the cavity wall of the second cavity 410, so that the second sliding member 500 is switched from the third position to the fourth position, at this time the first sliding member 200 can extend into the clamping groove 510 on the side close to the second cavity 410 during moving in the first preset direction. By means of the movement inertia and gravity of the movable member 600 itself, the movement of the second sliding member 500 is quickly started, so that the response speed of the protection device is relatively fast, and the fire extinguishing protection effect is better.
[0116] By setting the first elastic member 700 between the side of the second sliding member 500 away from the movable member 600 and the bottom wall of the second cavity 410, so that when the movable member 600 is close to and abuts against the second sliding member 500 to drive the second sliding member 500 to move under the action of inertia or gravity under the preset condition, the second sliding member 500 will also be subjected to the elastic force of the first elastic member 700 towards the side of the movable member 600, so that the force on the second sliding member 500 is more balanced, the movement is more stable, the speed is controllable, and the possibility that the first sliding member 200 cannot be clamped with the clamping groove 510 on the side close to the second sliding member 500 when the second sliding member 500 moves too fast is reduced.
[0117] The second elastic member 800 is arranged on the side of the first sliding member 200 away from the second cavity 410, and the second elastic member 800 applies an elastic force to the first sliding member 200 to move toward the side of the second cavity 410, so that the first sliding member 200 has a tendency to move toward the side of the second cavity 410 when in the first position. When the vehicle is in a collision, rollover or overturning situation, the second sliding member 500 slides relative to the cavity wall of the second cavity 410 under the action of inertia or gravity, so that the clamping groove 510 can move to the position where the second cavity 410 and the first cavity 110 are connected. At this time, the second elastic member 800 can push the first sliding member 200 to move, so that the second end of the first sliding member 200 can quickly extend into the clamping groove 510.
[0118] The two clamping members 900 jointly form an installation space, so that the required protection battery 2000 can be accommodated in the installation space, and the two opposite end faces of the battery 2000 are clamped by the two clamping members 900. Thus, the installation and fixation of the protection device relative to the battery 2000 are achieved.
[0119] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.
Claims
1. A protective device, characterized in that, The protective device includes: The first mounting component (100) has a first cavity (110) and the first cavity (110) is provided with an inlet (111) and an outlet (112). The first sliding member (200) is accommodated within the first cavity (110); and The storage component has a storage cavity (310) connected to the feed inlet (111), and the storage cavity (310) contains fire extinguishing material. The first sliding member (200) can slide relative to the cavity wall of the first cavity (110) along a first preset direction, so that the discharge port (112) is connected to or not connected to the feed port (111).
2. The protection device according to claim 1, characterized in that, When the first slider (200) slides relative to the cavity wall of the first cavity (110), it can switch from the first position to the second position; In the first position, at least one of the discharge port (112) and the inlet port (111) is covered and sealed by the first sliding member (200); In the second position, the discharge port (112) and the inlet port (111) are connected through the first cavity (110) so that the fire extinguishing material is sprayed out from the discharge port (112).
3. The protection device according to claim 2, characterized in that, The protection device includes a second mounting component (400). The second mounting component (400) is configured with a second cavity (410), which is connected to the first cavity (110), and the extension direction of the second cavity (410) is set at an angle to the extension direction of the first cavity (110). The first sliding member (200) has a first end and a second end disposed opposite to each other along the first preset direction; in the second position, the first end retracts to cover and seal at least one of the discharge port (112) and the inlet port (111), and the second end extends at least partially into the second cavity (410) through the second cavity (410) and the first cavity (110) communicating with each other.
4. The protection device according to claim 3, characterized in that, The protective device includes a second sliding member (500); The second sliding member (500) is housed in the second cavity (410) and can slide relative to the cavity wall of the second cavity (410) along a second preset direction; the outer side wall of the second sliding member (500) is provided with a snap-fit groove (510). The second slider (500) has a third position and a fourth position relative to the second cavity (410); In the third position, the second end of the first slider (200) is separated from the snap-fit groove (510), and the first slider (200) is located in the first position; In the fourth position, the second end of the first slider (200) is at least partially inserted into the snap-fit groove (510), and the first slider (200) is located in the second position.
5. The protection device according to claim 4, characterized in that, The second end of the first slider (200) is provided with a snap-fit protrusion (210). In the fourth position, the snap-fit protrusion (210) snaps into the snap-fit groove (510).
6. The protection device according to claim 5, characterized in that, The protective device also includes a movable part (600) housed within the second cavity (410). In the third position, the movable member (600) is separated from the second sliding member (500); Under preset conditions, the movable member (600) can approach the second sliding member (500) to abut against the second sliding member (500) and drive the second sliding member (500) to slide relative to the cavity wall of the second cavity (410) so that the second sliding member (500) switches from the third position to the fourth position.
7. The protection device according to claim 6, characterized in that, The protective device also includes a first elastic element (700). The first elastic member (700) is housed in the second cavity (410) and deformably abuts against the side of the second sliding member (500) away from the movable member (600) and the bottom wall of the second cavity (410) along the second preset direction.
8. The protection device according to claim 3, characterized in that, The protective device also includes a second elastic element (800). The second elastic member (800) is housed in the first cavity (110) and abuts against the side of the first sliding member (200) away from the second cavity (410); the second elastic member (800) is used to apply an elastic force to the first sliding member (200) to move toward the side of the second cavity (410).
9. The protective device according to any one of claims 3-8, characterized in that, The number of the second mounting component (400) is two, and the two second mounting components (400) are spaced apart; Along the first preset direction, both ends of the first mounting member (100) are respectively connected to the second cavities (410) of the two second mounting members (400); The number of the first slider (200) is two, and the two first sliders (200) are spaced apart along the first preset direction.
10. The protection device according to claim 9, characterized in that, Both of the second mounting parts (400) are provided with a clamping part (900) on the side near the discharge port (112); The two clamping elements (900) together enclose an installation space; The protective device also includes a spray head (1000). The spray head (1000) is installed at the discharge port (112) and connected to the discharge port (112), and the spray nozzle (1100) of the spray head (1000) faces the installation space.