Protective cover, battery, power consumption device, and method of manufacturing the protective cover

Abstract

This application relates to the battery field, and more particularly to a protective cover, a battery, a power consumption device, and a method for manufacturing the protective cover. The protective cover includes: a first cover for fixing to a battery frame, the first cover having an accommodation cavity for accommodating a high-pressure extraction member, the accommodation cavity having an opening for exposing the high-pressure extraction member; a second cover rotatably mounted on the first cover and configured to open and close the opening when rotated in a first rotation direction and a second rotation direction relative to the first cover, respectively; and a closing mechanism connected to the first and second covers, configured to rotate the second cover in the second rotation direction after the second cover is opened and the external force for opening the second cover is removed. This prevents safety risks caused by forgetting to close the second cover.

Description

[Technical field]

[0001] The present application relates to the field of batteries, and more particularly to protective covers, batteries, power consuming devices and methods of manufacturing protective covers. [Background technology]

[0002] Energy saving and emission reduction are the keys to the sustainable development of the automotive industry. In this context, electric vehicles have become an important part of the sustainable development of the automotive industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is a key element in their development.

[0003] In the development of battery technology, in addition to the improvement of battery performance, safety issues have also become an issue that cannot be ignored. Battery safety issues are not only related to thermal runaway caused by the battery's chemical system, but also related to the high voltage electricity of the battery. Summary of the Invention

[0004] In view of the above problems, the present application provides a protective cover for improving the safety of a battery, a battery, a power consuming device, and a method for manufacturing the protective cover.

[0005] In order to achieve the above object, the protective cover according to the present application comprises: a first lid for being fixed onto a frame of a battery, the first lid having a receiving cavity thereon, the receiving cavity for receiving a high-voltage extraction member, the receiving cavity having an opening, the opening for exposing the high-voltage extraction member; a second cover that is rotatably installed on the first cover and opens and closes the opening when rotated in a first rotation direction and a second rotation direction relative to the first cover, respectively; The device includes a closing mechanism connected to the first lid and the second lid, the closing mechanism rotating the second lid in a second rotational direction after the second lid is opened and the external force opening the second lid is removed.

[0006] With the above-mentioned installation, the second lid can be automatically rotated to the closed position by the action of the closing mechanism, thus reducing the risk of forgetting to close the second lid, which is advantageous in improving safety of use by preventing safety issues caused by forgetting to close the second lid.

[0007] In some embodiments, the lid closing mechanism includes an elastic member connected to the first lid and the second lid, and an elastic restoring force of the elastic member drives the second lid to rotate in the second rotational direction after an external force opening the second lid is removed.

[0008] The installed elastic member drives the second lid to automatically bounce back, preventing safety risks caused by an operator forgetting to close the second lid.

[0009] In some embodiments, the elastic member includes a spring, a first end of the spring connected to the first lid and a second end of the spring connected to the second lid, such that after an external force opening the second lid is removed, the second lid rotates in the second rotational direction driven by the elastic restoring force of the spring.

[0010] By installing a spring, a fully automated lid closing process and automatic maintenance of the closed state after lid closing can be achieved based on a simple structure, which is advantageous for further improving the safety of use.

[0011] In some embodiments, the first end of the spring is attached to the first lid and / or the second end of the spring is attached to the second lid. Using the attachment method, the structure is simple and the assembly is convenient.

[0012] In some embodiments, a first stopper cavity is provided on the first lid, and the spring is installed in the first stopper cavity. Since the first stopper cavity can play a certain stopper role for the spring, the reliability of the installation of the spring on the first lid can be improved, which is favorable for the spring to fully and reliably realize the automatic rebound function.

[0013] In some embodiments, the first lid includes a base and a first cover, the base having a first groove thereon, the first cover being removably connected to the base and covering the first groove to form a first stopper cavity, the first stopper cavity being formed by engaging the base and the first cover to provide an effective stop for the spring, and the first cover being removably connected to the base to facilitate attachment and detachment of a member, such as a spring, located within the first stopper cavity.

[0014] In some embodiments, the first cover is fastened to the base. Using the fastening method, the structure is simple and the assembly is convenient.

[0015] In some embodiments, a groove is provided on the base, a connecting rib is provided on the first cover, and a convex rib is provided on the connecting rib, and the connecting rib is engaged with the groove and is tightly fitted with the groove via the convex rib, thereby preventing the connecting rib from slipping out of the groove. In this way, the connection between the first cover and the base is reliable and difficult to come off, which is advantageous in realizing the first cover being firmly attached to the base, and makes it easy for the first cover to act as a reliable stopper for a spring, etc.

[0016] In some embodiments, the second cover includes a rotating shaft and a cover body, the rotating shaft is rotatably mounted on the first cover, the cover body is connected to the rotating shaft to open and close the opening, and the second end of the spring is connected to the rotating shaft, thereby facilitating the second end of the spring to rotate together with the second cover, and smoothly realizing the automatic rebound function.

[0017] In some embodiments, the elastic member includes a connecting piece, and the second lid is rotatably connected to the first lid through the connecting piece, so that after the external force for opening the second lid is removed, the elastic restoring force of the connecting piece drives the second lid to rotate in the second rotation direction. In this way, the connecting piece constitutes a thin-walled hinge structure, which is not only used to realize the rotatable connection between the first lid and the second lid, but also used to drive the automatic rebound of the second lid, avoiding that the operator forgets to close the second lid and causes the risk of electric shock due to incorrect contact.

[0018] In some embodiments, the connecting piece comprises: The thickness of the connection piece is 0.7 mm or less, The tensile strength of the material of the connection piece is 20 to 50 MPa; The breaking elongation of the material of the connecting piece is 15% or less; The bending strength of the material of the connection piece is 30 to 80 MPa; The Charpy notch impact strength of the material of the connector is 35KJ / m 2 and At least one of the following is satisfied: the width of the connecting piece is 3 mm or more.

[0019] A connecting piece that satisfies at least one of the above conditions has good toughness and can generate good recoverable deformation, which is advantageous for reliably driving the automatic rebound of the second lid, and also has appropriate hardness, is easy to bend, and is not easily brittle, which is advantageous for realizing multiple repeated opening and closing.

[0020] In some embodiments, the connecting piece is made of nylon material, which can provide a connecting piece with good performance and smoothly realize the automatic rebound function.

[0021] In some embodiments, the connecting piece is made of PA6 material, which can provide a connecting piece with excellent performance and smoothly realize the automatic rebound function.

[0022] In some embodiments, the closure mechanism includes at least two connecting pieces, the at least two connecting pieces being spaced apart along an extension direction of the rotation axis of the second lid.

[0023] In some embodiments, the protective lid includes a deceleration member connected to the first lid and the second lid, and when the lid closing mechanism rotates the second lid in the second rotation direction, the deceleration member applies a force to the second lid in the first rotation direction to slow down the closing speed of the second lid, thus allowing sufficient time for the high pressure extraction member to be attached and detached.

[0024] In some embodiments, the deceleration member is fastened to the first lid, and / or the deceleration member is fastened to the second lid. By using the fastening method, the structure is simple and the assembly is convenient.

[0025] In some embodiments, the deceleration member and the spring of the closing mechanism are disposed on opposite sides of the second cover, making it easier for the deceleration member and the spring to apply a rotational force in the opposite direction to the second cover when the second cover rotates, and the layout is more reasonable, making the overall structure simpler and more compact.

[0026] In some embodiments, a second stopper cavity is provided on the first lid, and the deceleration member is installed in the second stopper cavity, and the second stopper cavity can act as a certain stopper for the deceleration member, thereby improving the reliability of the installation of the deceleration member on the first lid.

[0027] In some embodiments, the first lid includes a base and a second cover, the base having a second groove, and the second cover is removably connected to the base and covers the second groove to form a second stopper cavity. In this installation method, the second stopper cavity is formed by engaging the base and the second cover, and can provide an effective stop for the deceleration member. And, the second cover is removably connected to the base to facilitate attachment and detachment of a member, such as a deceleration member, located in the second stopper cavity.

[0028] In some embodiments, the deceleration member includes a damper, thus ensuring that the automatic closing speed of the second lid is slowed down.

[0029] In some embodiments, the free end of the second cover and the first cover are connected by an engagement structure or a magnetic attraction structure, so that the connection between the free end of the second cover and the first cover is more solid, and after the second cover returns to the closed position by the action of the closing mechanism, the second cover can be more stably maintained in the closed position, sufficiently shielding the high voltage extraction member, and effectively reducing the risk of electric shock.

[0030] In some embodiments, the first lid has a stopper portion, and the stopper portion contacts the second lid to limit the maximum opening angle of the second lid. Based on this, it is easy to adjust the maximum opening angle of the second lid by adjusting the position and / or structure of the stopper portion.

[0031] In some embodiments, the stopper portion limits the maximum opening angle of the second cover to 180° or more. In this way, the high pressure extraction member can be fully exposed, providing a larger operating space for the operator and facilitating the operator's operation, which is advantageous for improving the efficiency of the operator's installation and removal maintenance.

[0032] In some embodiments, a gripping portion is provided on the second lid to facilitate rotation of the second lid by an operator.

[0033] The present application also provides a battery, which includes a battery cell, a frame and a high-voltage drawer member, the battery cell is installed on the frame, the high-voltage drawer member is installed on the frame and is electrically connected to the battery cell, and the battery further includes a protective cover according to the embodiment of the present application. The protective cover can be automatically closed, so that the safety performance of the battery is better.

[0034] In some embodiments, the battery includes an outer casing, the outer casing includes a casing lid, the frame is installed in the outer casing, and an avoidance groove is provided on the inner wall of the casing lid, and the avoidance groove avoids the second lid to prevent the second lid from interfering with the casing lid during rotation. In this way, it is advantageous to realize smooth opening and closing of the second lid.

[0035] The present application also provides a power consuming device, which includes the battery of the embodiment of the present application, and the battery is for providing electric energy. Since the protective cover can be automatically closed, the safety performance of the power consuming device is better.

[0036] The present application also provides a method for manufacturing the protective cover of each embodiment, the method comprising: providing a first cover, the first cover being for being fixed onto a frame of the battery, a receiving cavity being provided on the first cover, the receiving cavity being for receiving a high-pressure extraction member, the receiving cavity having an opening, the opening being for exposing the high-pressure extraction member; providing a second cover, the second cover being rotatably mounted on the first cover and adapted to open and close the opening when rotated in a first rotation direction and a second rotation direction relative to the first cover, respectively; A lid closing mechanism is provided, the lid closing mechanism being connected to a first lid and a second lid, and including rotating the second lid in a second rotational direction after the second lid is opened and an external force opening the second lid is removed.

[0037] The protective cover manufactured by the above method has an automatic closing function, which can improve the safety performance of the battery and the power consuming device.

[0038] The above description is only an outline of the technical solution of the present application. In order to enable the technical solutions of the present application to be more clearly understood and implemented according to the content of the specification, and to make the above and other objectives, features and advantages of the present application more obvious and easy to understand, specific embodiments of the present application are given below. [Brief description of the drawings]

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The drawings are used only to illustrate the preferred embodiments and are not to be considered as limiting the present application. And, in the drawings, the same parts are represented by the same drawing symbols. In the drawings, [Figure 1] 1 is a structural schematic diagram of a power consumption device in an embodiment of the present application; [Diagram 2] FIG. 2 is a partial structural schematic diagram of a battery in the first embodiment of the present application. [Diagram 3] 1 is a schematic perspective view of a battery according to a first embodiment of the present application, with the outer casing omitted. [Figure 4] 1 is a schematic perspective view of a battery cell according to a first embodiment of the present application; [Diagram 5] FIG. 4 is a schematic enlarged view of I in FIG. [Figure 6] FIG. 2 is a schematic diagram showing the mounting of a protective cover in a closed state on a base in the first embodiment of the present application. [Figure 7] 1 is a schematic diagram showing the mounting of a protective cover in an open state on a base in a first embodiment of the present application. FIG. [Figure 8] FIG. 8 is an exploded schematic view of FIG. [Figure 9] 1 is a schematic perspective view of a protective cover in a closed state according to a first embodiment of the present application; FIG. [Figure 10] 1 is a schematic perspective view of a protective cover in a first embodiment of the present application in an open state; [Figure 11]1 is a schematic perspective view of a protective lid in a closed state in a first embodiment of the present application, with the first and second covers omitted. FIG. [Figure 12] 1 is a schematic perspective view of a protective cover in which a first cover and a second cover are omitted in a first embodiment of the present application when the protective cover is opened to a maximum angle. [Figure 13] FIG. 13 is a local enlarged schematic view of II in FIG. [Figure 14] FIG. 2 is a schematic diagram of a spring and a damper mounted on a base in the first embodiment of the present application. [Figure 15] FIG. 2 is a schematic diagram of a combination structure of a spring and a damper, a first cover, a second cover, and a second lid in the first embodiment of the present application. [Figure 16] FIG. 2 is a first perspective schematic view of a first lid in the first embodiment of the present application. [Figure 17] FIG. 2 is a second perspective schematic view of the first lid in the first embodiment of the present application. [Figure 18] FIG. 2 is a first perspective schematic view of a base in the first embodiment of the present application. [Figure 19] FIG. 2 is a second perspective schematic view of the base in the first embodiment of the present application. [Figure 20] FIG. 2 is a schematic perspective view of a first cover in the first embodiment of the present application. [Figure 21] FIG. 2 is a schematic perspective view of a second cover in the first embodiment of the present application. [Figure 22] FIG. 22 is a local enlarged schematic view of III in FIG. 21. [Figure 23] FIG. 4 is a side view of a second cover in the first embodiment of the present application. [Figure 24] FIG. 24 is a local enlarged schematic view of IV in FIG. 23. [Diagram 25] FIG. 2 is a schematic perspective view of a second lid in the first embodiment of the present application. [Figure 26] FIG. 2 is a schematic perspective view of a spring according to the first embodiment of the present application. [Figure 27] 1 is a schematic perspective view of a damper according to a first embodiment of the present application. [Figure 28]FIG. 2 is a schematic diagram of a local structure of a battery according to a second embodiment of the present application. [Figure 29] FIG. 11 is a schematic view showing the mounting of a protective cover in an open state on a base in a second embodiment of the present application. [Diagram 30] FIG. 11 is a schematic perspective view of a protective cover in a second embodiment of the present application when the protective cover is in a closed state. [Diagram 31] FIG. 11 is a schematic perspective view of a protective cover in a third embodiment of the present application in a closed state. [Diagram 32] FIG. 13 is a schematic perspective view of a protective cover in a fourth embodiment of the present application in a closed state. [Diagram 33] FIG. 13 is a schematic perspective view of a protective cover in a closed state in a fifth embodiment of the present application. [Diagram 34] FIG. 13 is a schematic diagram showing the installation of a first magnetic attraction member on a first lid in the fifth embodiment of the present application. [Diagram 35] FIG. 13 is a schematic perspective view of a first magnetic attraction member in a fifth embodiment of the present application. [Diagram 36] FIG. 13 is a schematic diagram showing the installation of a second magnetic attraction member on a second lid in a fifth embodiment of the present application. [Figure 37] 4 shows a method for manufacturing a protective cover in an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0040] The following detailed description will be given of the embodiments of the technical solution of the present application in conjunction with the drawings. The following embodiments are provided to more clearly explain the technical solution of the present application, and are merely illustrative and do not limit the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used herein are used only to describe specific embodiments and are not intended to limit the present application. The terms "including", "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover the non-exclusive "including".

[0042] In the description of the embodiments of the present application, the terms "first", "second", etc. are used only for the purpose of distinguishing different objects, and are not understood to express or imply relative importance, or to imply the number, specific order, or primary-subordinate relationship of the indicated technical features. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise specified by specific limitations.

[0043] When referring to an "embodiment" in the present specification, it means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various places in the specification, but does not necessarily refer to all the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiment described in this specification may be combined with other embodiments.

[0044] In the description of the embodiments of the present application, the term "and / or" merely describes the relationship between related objects and indicates that three relationships may exist, for example, A and / or B may represent three cases: A alone, a combination of A and B, and B alone. In addition, the character " / " in the text generally indicates that the related objects before and after are in an "or" relationship.

[0045] In describing the embodiments of the present application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0046] In describing the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," "circumferential direction," and the like are based on the orientations or positional relationships shown in the drawings, and are for the convenience or simplification of the description of the embodiments of the present application, and are not intended to indicate or imply that the devices or elements referred to have a specific orientation and are required to be constructed and operated in a specific orientation, and should not be understood as limiting the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified or limited, the technical terms "attached", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, may be fixedly connected, may be detachably connected, may be integrated, may be mechanically connected, may be electrically connected, may be directly connected, may be indirectly connected via an intermediate medium, may be internal communication between the two elements, or may be an interactive relationship between the two elements. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present application according to the specific situation.

[0048] At present, the applications of power batteries are expanding. Power batteries are widely used not only in energy storage power systems such as hydroelectric, thermal, wind and solar power plants, but also in multiple fields such as electric transportation such as electric bicycles, electric motorcycles and electric cars, military equipment, aviation and space flight, etc. As the application fields of power batteries expand, the requirements for their performance are constantly increasing.

[0049] Here, safety is an important performance index of a battery. It is necessary to prevent safety accidents such as electric leakage or unexpected electric shock during the use and daily maintenance of the battery.

[0050] In a battery, battery cells are provided in a frame, and a high-voltage drawer member is provided on the frame, and the high-voltage drawer member is electrically connected to the battery cells to realize a voltage output. As one of the means for improving the safety of a battery, a battery generally includes a protective cover that covers the outside of the high-voltage drawer member of the battery to shield and protect the high-voltage drawer member and prevent the problem of electric shock due to exposure of the high-voltage drawer member. The high-voltage drawer member is used to realize the drawer of electric energy, and since the high-voltage drawer member has a high voltage, if a person's hand directly touches the high-voltage drawer member, an accident may occur in which the person is injured by electric shock.

[0051] In one structural form of the protective cover, the protective cover includes a first cover and a second cover, and the second cover is rotatably connected to the first cover to realize opening and closing of the protective cover and to expose or shield the high-voltage drawer member. In a normal state, the protective cover is in a closed state to shield the high-voltage drawer member and prevent electric shock due to erroneous contact. When it is necessary to attach or detach the high-voltage drawer member, the second cover is rotated to open the protective cover and expose the high-voltage drawer member, facilitating the attachment and detachment of the high-voltage drawer member.

[0052] Although the installation of the protective cover can improve the safety of the battery to a certain extent, practice has revealed that an operator may forget to rotate and close the second cover after completing the installation and removal of the high-voltage pull-out member, which may result in the protective effect of the protective cover being lost and the high-voltage pull-out member being exposed over a wide area, so that the risk of electric shock due to erroneous contact still exists.

[0053] According to the above findings, in order to further improve the safety of the battery, the present application provides a protective cover, a battery, a power consumption device, and a method for manufacturing the protective cover, and by improving the structure of the protective cover, the protective cover can be automatically closed after the external force for opening the protective cover is removed, thereby reducing the risk of forgetting to close the protective cover and avoiding the occurrence of safety accidents caused by forgetting to close the protective cover.

[0054] 1 to 37 show structures of a power consuming device, a battery and a protective cover, and steps of a method for manufacturing the protective cover in some embodiments of the present application.

[0055] For ease of description, first, each direction is defined using the coordinate system in FIG. 3. Here, the Z axis represents the height direction of the battery, and is also called the first direction Z. The X axis is perpendicular to the Z axis, and represents the longitudinal direction of the battery, and is also called the second direction X. The Y axis is perpendicular to both the X axis and the Z axis, and represents the width direction of the battery, and is also called the third direction Y. Thus, the first direction Z, the second direction X, and the third direction Y are perpendicular to each other. According to such a definition of the orientation, the direction corresponding to the first direction Z is the up-down direction, and the description of the orientation or positional relationship indicated by "up", "down", "top", and "bottom" is defined, where the orientation of the protective cover relative to the base is up, and the orientation of the base relative to the protective cover is down.

[0056] The present application will be described below in conjunction with FIGS.

[0057] Fig. 1 exemplarily illustrates the structure of a power consumption device of the present application. Referring to Fig. 1, the power consumption device 100 is a device that uses a battery 10 as a power source, which includes the battery 10, and the battery 10 is for providing electrical energy.

[0058] Here, the power consumption device 100 may be various power consumption devices such as a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a steamship, a spacecraft, etc. Here, the electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric steamship toy, an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0059] The power consuming device 100 includes a power source, which may include a battery 10, and the battery 10 provides a driving force for the power consuming device 100. In some embodiments, the driving force of the power consuming device 100 is entirely electrical energy, and the power source includes only the battery 10. In other embodiments, the driving force of the power consuming device 100 includes electrical energy and other energy (e.g., mechanical energy), and the power source includes the battery 10 and other equipment, such as an engine.

[0060] Take for example a case where the power consumption device 100 is a vehicle 200. Referring to Fig. 1, in some embodiments, the power consumption device 100 is a new energy vehicle, such as a pure electric vehicle, a hybrid vehicle, or a range extender vehicle, which includes a battery 10, a controller 201, and a power device 202, such as a motor 203, in which the battery 10 is electrically connected to the power device 202, such as the motor 203, via the controller 201, so that the battery 10 can supply power to the power device 202, such as the motor 203, under the control of the controller 201.

[0061] As can be seen, the battery 10 is an essential component of the power consuming device 100 .

[0062] 2 to 8 show exemplary structures of the battery 10 of the present application.

[0063] 2 to 8, the battery 10 includes a frame 102, a battery cell 101, a high voltage drawer member 105, and a protective lid 104.

[0064] The frame 102 is for storing the battery cells 101 and providing a mounting base for other components of the battery 10, such as the high-voltage drawer member 105 and the protective cover 104. Referring to FIG. 3, in some embodiments, the frame 102 includes two end caps 10a, two end plates 10c, and two side plates 10b. The two end caps 10a are arranged opposite each other along a first direction Z. The two end plates 10c are arranged opposite each other along a second direction X and connected to the two end caps 10a. The two side plates 10b are arranged opposite each other along a third direction Y and connected to both the two end caps 10a and the two end plates 10c. In this way, the two end caps 10a, the two end plates 10c, and the two side plates 10b jointly surround the frame 102 having an internal storage space, thereby storing the battery cells 101 and facilitating the mounting of other components of the battery 10, such as the high-voltage drawer member 105 and the protective cover 104.

[0065] The battery cell 101 is the smallest battery unit for providing electric energy, is installed in a frame 102, and belongs to the core component of the battery 10. Fig. 4 exemplarily illustrates the structure of the battery cell 101. In Fig. 4, the battery cell 101 is a secondary battery having a cubic shape, but as a modified example, the battery cell 101 may be a secondary battery having another shape, such as a cylindrical body or a flat body, or the battery cell 101 may be a primary battery.

[0066] Although not shown, it should be understood that the mounting manner of the battery cells 101 on the frame 102 may vary. In some embodiments, the frame 102 is provided with a plurality of battery cells 101. These battery cells 101 are arranged in parallel on the frame 102 and electrically connected in a series, parallel or series-parallel manner to achieve high capacity or power.

[0067] The high-voltage extraction member 105 is installed on the frame 102 and electrically connected to the battery cells 101 to realize the electric energy output of the battery cells 101 in the frame 102. The battery cells 101 in the frame 102 realize the electric energy output by the high-voltage extraction member 105. Referring to FIG. 3 and FIG. 5, in some embodiments, the high-voltage extraction member 105 is installed on the end plate 10c of the frame 102. Specifically, as shown in FIG. 5, in some embodiments, a base 103 is provided on the end plate 10c, and the high-voltage extraction member 105 is connected to the base 103 to realize the installation of the high-voltage extraction member 105 on the end plate 10c. More specifically, in some embodiments, the high-voltage extraction member 105 is connected to the base 103 via a fastener 106 (e.g., a bolt).

[0068] The protective cover 104 covers the outside of the high-voltage drawer member 105, thereby shielding and protecting the high-voltage drawer member 105 and preventing a person's hand from accidentally touching the high-voltage drawer member 105 and causing an unexpected electric shock accident. Referring to FIG. 5, in some embodiments, the protective cover 104 is installed on the base 103. FIGS. 6 to 8 exemplarily show schematic views of the mounting of the protective cover 104 on the base 103. As shown in FIGS. 6 to 8, in some embodiments, the protective cover 104 is rotatably connected to the base 103 via a connecting shaft 117, and at this time, the protective cover 104 is detachably connected to the base 103, making it easy to attach and detach the protective cover 104. Of course, in order to realize a removable connection of the protective cover 104 on the base 103, other connection methods may be adopted between the protective cover 104 and the base 103, such as engagement fitting, hole-pin fitting, and a combination of engagement fitting, rotation axis fitting, and hole-pin fitting.

[0069] For ease of description, the frame 102, the battery cells 101 located inside the frame 102, and components such as the base 103, high voltage draw member 105, and protective cover 104 located on the frame 102 are collectively referred to as a single assembly.

[0070] Returning to FIG. 2, in some embodiments, the battery 10 not only includes the single assembly but also includes an outer casing 107. The outer casing 107 generally includes a housing (not shown) and a housing lid 108, and the housing lid 108 is placed over an end opening of the housing to form a sealed space for accommodating the single assembly. The single assembly is installed in the outer casing 107. In some embodiments, at least two single assemblies are provided in the outer casing 107, and electrical connection is realized between the different single assemblies by the high-voltage extraction member 105 and a connecting bus bar member (not shown). Specifically, the high-voltage extraction member 105 of one single assembly is electrically connected to the high-voltage extraction member 105 of another single assembly through the connecting bus bar member, thus realizing electrical connection between the different single assemblies in the outer casing 107 and facilitating the extraction of electrical energy. Here, as an example, the high-voltage pull-out member 105 and the connection bus bar member are connected by a fastener 106, which on the one hand fastens the high-voltage pull-out member 105, the connection bus bar member and the base 103, and on the other hand realizes an electrical connection between the high-voltage pull-out member 105 and the connection bus bar member.

[0071] The structure of the protective cover 104 will now be described.

[0072] 9 to 36 show exemplary structures of the protective cover 104 of the present application.

[0073] 9 to 36, in the embodiment of the present application, the protective cover 104 includes a first cover 1, a second cover 2, and a closing cover mechanism 3. The first cover 1 is for being fixed on the frame 102 of the battery 10. A housing cavity 14 is provided on the first cover 1, and the housing cavity 14 is for housing the high-pressure extraction member 105. The housing cavity 14 has an opening 15, and the opening 15 is for exposing the high-pressure extraction member 105. The second cover 2 is rotatably installed on the first cover 1, and opens and closes the opening 15 when it rotates in a first rotation direction and a second rotation direction relative to the first cover 1, respectively. The closing cover mechanism 3 is connected to the first cover 1 and the second cover 2, and rotates the second cover 2 in the second rotation direction after the second cover 2 is opened and the external force for opening the second cover 2 is removed.

[0074] The first rotation direction is the opening direction of the second lid 2, and when the second lid 2 rotates in the first rotation direction, the opening 15 gradually opens, exposing the high-voltage drawer member 105 and facilitating attachment and detachment of the high-voltage drawer member 105. In FIG. 9, the first rotation direction is specifically the counterclockwise direction. The second rotation direction is the closing direction of the second lid 2, and when the second lid 2 rotates in the second rotation direction, the opening 15 gradually closes, shielding the high-voltage drawer member 105 and reducing the risk of accidentally touching the high-voltage drawer member 105 and causing an electric shock accident. In FIG. 9, the second rotation direction is specifically the clockwise direction.

[0075] According to the above-mentioned installation, the protective cover 104 has an automatic cover-closing function. After the external force for opening the second cover 2 is cancelled, the second cover 2 can be automatically rotated in the second rotation direction for closing the opening 15 by the action of the cover-closing mechanism 3, so that even if the operator forgets to rotate the second cover 2 again to the closed position after opening the second cover 2 and completing the installation / removal of the high-pressure extraction member 105, the second cover 2 can be automatically rotated to the closed position by the action of the cover-closing mechanism 3. In this way, the risk of forgetting to close the second cover 2 can be reduced, and by preventing safety problems caused by forgetting to close the second cover 2, it is advantageous to improving the safety of use.

[0076] As an example of the closing mechanism 3, refer to Figures 11 and 29. The closing mechanism 3 includes an elastic member 3a, which is connected to the first lid 1 and the second lid 2, and after the external force for opening the second lid 2 is removed, the elastic recovery force of the elastic member 3a drives the second lid 2 to rotate in the second rotation direction.

[0077] In the above installation method, since the elastic member 3a is connected to the first cover 1 and the second cover 2, when an operator applies an external force to rotate the second cover 2 in a first rotation direction relative to the first cover 1, the elastic member 3a undergoes elastic deformation and accumulates elastic force. After the operator cancels the external force to open the second cover 2, the elastic force accumulated by the elastic member 3a is released, and the released elastic force drives the second cover 2 to rotate in the second rotation direction, so that the second cover 2 can automatically bounce back.

[0078] As can be seen from this, the installed elastic member 3a drives the second lid to automatically bounce back, preventing the occurrence of safety risks caused by an operator forgetting to close the second lid 2.

[0079] Furthermore, the automatic closing function of the closing mechanism 3 is realized using the elastic member 3a, and since it does not need to be installed in a complex transmission structure like other mechanical structures for realizing the automatic closing function, the structure is simple and the cost is low. Since the dimensions of the protective cover 104 itself are small and the installation space for the protective cover 104 is limited, it is particularly appropriate to use the elastic member 3a, which has a simple structure, to drive the automatic closing of the second cover 2.

[0080] The elastic member 3a is a member having elasticity, and its specific structure may be various. For example, the elastic member 3a includes a spring 31 or a connecting piece 32. Figures 9 to 27 and Figures 28 to 36 respectively show exemplary structures of the protective cover 104 when the elastic member 3a includes the spring 31 and when the elastic member 3a includes the connecting piece 32. These will be described separately below.

[0081] First, the protective cover 104 in the case where the elastic member 3a includes the spring 31 will be described with reference to FIGS.

[0082] 9 to 27, in some embodiments, the elastic member 3a includes a spring 31, a first end 311 of the spring 31 is connected to the first lid 1, and a second end 312 of the spring 31 is connected to the second lid 2, whereby after the external force for opening the second lid 2 is removed, the second lid 2 is rotated in the second rotation direction by the drive of the elastic restoring force of the spring 31.

[0083] According to the above installation, the spring 31 includes two ends, and the first end 311 of the spring 31 may be fixed relative to the first lid 1, and the second end of the spring 31 may rotate relative to the first lid 1 together with the second lid 2. When the second lid 2 rotates in a first rotation direction relative to the first lid 1, the spring 31 may be twisted, generate stored force, and have elastic recovery force. When the external force for opening the second lid 2 is subsequently canceled, the elastic recovery force of the spring 31 is released, and the second lid 2 may be driven to rotate in a second rotation direction, thereby automatically bouncing back the second lid 2 and realizing an automatic lid-closing function. Then, the elastic coefficient, length, etc. of the spring 31 may be set according to the driving force required to drive the rotation of the second lid 2.

[0084] By connecting both ends of the spring 31 to the first cover 1 and the second cover 2 respectively, a corresponding automatic cover-closing function can be realized, so that the structure is simple.

[0085] And because the spring 31 has a strong elastic recovery force, it can drive the second cover 2 to return completely to the closed position to provide sufficient shielding and protection for the high pressure drawing member 105. Therefore, when the spring 31 is adopted as the closing mechanism 3, a completely automatic closing process of the second cover 2 can be realized, and no manual intervention is required for the entire closing process, further saving time and labor.

[0086] At the same time, when the spring 31 is used to realize the automatic lid-closing function, when the second lid 2 returns to the closed position by the action of the spring 31, the spring 31 still provides a certain rebound force, and the second lid 2 can be stably maintained in the closed position, and there is no need to install a dedicated connecting structure separately to fix the free end of the second lid 2 to the first lid 1. That is, the installed spring 31 can stably maintain the second lid 2 in the closed position based on a simple structure, and reduce the risk of accidental opening. As can be understood, the free end of the second lid 2 refers to the end of the second lid 2 that is not connected to the first lid 1 in the open state.

[0087] As can be seen from this, by installing the spring 31, it is possible to realize a fully automated lid closing process and automatic maintenance of the closed state after lid closing is completed based on a simple structure, which is advantageous for further improving the safety of use.

[0088] Here, the connection between both ends of the spring 31 and the first and second lids 1 and 2 may be various.

[0089] For example, the first end 311 of the spring 31 is engaged with the first cover 1. For example, referring to FIG. 15, in some embodiments, the first cover 1 is provided with an insertion hole 11a, and the first end 311 of the spring 31 is inserted into the insertion hole 11a to realize the engagement between the first end 311 of the spring 31 and the first cover 1. When the first end 311 of the spring 31 and the first cover 1 are connected in an engagement manner, the structure is simple and easy to assemble, and the first end 311 of the spring 31 and the first cover 1 can maintain a relative stationary state without rotating with the second cover 2, thereby facilitating the relative rotation with the second end 312 of the spring 31, and the spring 31 can generate a torsional deformation and accumulate an elastic force when the second cover 2 rotates in a first rotation direction.

[0090] For example, the second end 312 of the spring 31 is engaged with the second cover 2. For example, referring to FIG. 11, in some embodiments, a first engagement groove 214 is provided on the second cover 2, and the second end 312 of the spring 31 is engaged with the first engagement groove 214 to realize the engagement between the second end 312 of the spring 31 and the second cover 2. When the second end 312 of the spring 31 and the second cover 2 are connected in an engagement manner, the structure is simple, the assembly is easy, and the second end 312 of the spring 31 can rotate together with the second cover 2, thereby facilitating the second end 312 of the spring 31 to rotate relative to the first end 311 of the spring 31, and the spring 31 can generate torsional deformation and accumulate elastic force when the second cover 2 rotates in a first rotation direction.

[0091] Also, in order to realize a more reliable installation of the spring 31, referring to Fig. 10 and combining with Fig. 11, in some embodiments, a first stopper cavity 11b is provided on the first cover 1, and the spring 31 is installed in the first stopper cavity 11b. On this basis, the first stopper cavity 11b can play a certain stopper role for the spring 31, so that the reliability of the installation of the spring 31 on the first cover 1 can be improved, which is favorable for the spring 31 to fully and reliably realize the automatic rebound function.

[0092] As one implementation form of the first stopper cavity 11b, referring to FIG. 10 and combining with FIG. 11, in some embodiments, the first lid 1 includes a base 11 and a first cover 12, a first groove 11g is provided on the base 11, and the first cover 12 is removably connected to the base 11 and covered in the first groove 11g to form the first stopper cavity 11b.

[0093] In the above installation manner, the first stopper cavity 11b is formed by engaging the base 11 and the first cover 12, and can effectively stop the spring 31. The first cover 12 is detachably connected to the base 11, and can easily attach and detach the member located in the first stopper cavity 11b, such as the spring 31. When it is necessary to attach or detach the member located in the first stopper cavity 11b, such as the spring 31, the first cover 12 can be removed from the base 11 to open the space above the first groove 11g so as not to block it. At this time, the member located in the first stopper cavity 11b, such as the spring 31, can be easily attached or detached, which is more efficient. After the attachment and detachment are completed, the first cover 12 can be attached on the base 11 and the stopper can be performed again.

[0094] 16 to 24, in order to realize a detachable connection of the first cover 12 on the base 11, in some embodiments, the first cover 12 is engaged with the base 11. Specifically, as shown in Figs. 16 to 24, in some embodiments, a groove 11e is provided on the base 11, a connecting rib 11f is provided on the first cover 12, and a convex rib 11h is provided on the connecting rib 11f, and the connecting rib 11f is engaged with the groove 11e and is tightly fitted with the groove 11e via the convex rib 11h, thereby preventing the connecting rib 11f from slipping out of the groove 11e.

[0095] In the above installation method, based on the fitting of the connecting rib 11f and the convex rib 11h with the groove 11e, on the one hand, the first cover 12 is engaged with the base 11, and a removable connection between the first cover 12 and the base 11 can be easily realized, and further, attachment and detachment of components located in the first stopper cavity 11b, such as the spring 31, can be easily achieved; on the other hand, after the connecting rib 11f and the convex rib 11h are inserted into the groove 11e, the convex rib 11h and the groove 11e are tightly fitted, so that the connection is secure and not easy to come off, which is advantageous to realizing that the first cover 12 is firmly attached to the base 11, and facilitates the first cover 12 to act as a reliable stopper for the spring 31, etc.

[0096] 25 as one structural form of the second lid 2, in some embodiments, the second lid 2 includes a rotating shaft 21 and a lid body 22, the rotating shaft 21 is rotatably installed on the first lid 1, the lid body 22 is connected to the rotating shaft 21, and is for opening and closing the opening 15, and the second end 312 of the spring 31 may be connected to the rotating shaft 21. Such an installation can realize the connection between the second end 312 of the spring 31 and the second lid 2, and facilitates the second end 312 of the spring 31 to rotate together with the second lid 2 when the second lid 2 rotates.

[0097] For example, referring to FIG. 25 and combining FIG. 11, the rotating shaft 21 includes a first shaft body 211 and a second shaft body 212. The first shaft body 211 is connected to the cover body 22, the second shaft body 212 is connected to a first end of the first shaft body 211 in the axial direction, the spring 31 is fitted onto the second shaft body 212, and the second end 312 of the spring 31 is connected to the first shaft body 211. In this case, the second end 312 of the spring 31 is connected to the first shaft body 211, thereby realizing a connection with the rotating shaft 21 and further realizing a connection with the second cover 2, and the second end 312 of the spring 31 can rotate together with the second cover 2. At the same time, since the second shaft body 212 supports the spring 31, the structural stability of the spring 31 is better and it can rotate more reliably together with the second lid 2, which is advantageous for the spring 31 to more fully exert its automatic rebound function relative to the second lid 2.

[0098] 28 to 36, a protective cover 104 in which the elastic member 3a includes a connecting piece 32 will be described below.

[0099] 28 to 36, in some embodiments, the elastic member 3a includes a connecting piece 32, and the second lid 2 is rotatably connected to the first lid 1 via the connecting piece 32, and after the external force for opening the second lid 2 is removed, the elastic restoring force of the connecting piece 32 drives the second lid 2 to rotate in the second rotation direction.

[0100] In the above installation manner, the connection piece 32 constitutes a thin-walled hinge structure. The connection piece 32 may be integrally molded with the first lid 1 and / or the second lid 2, specifically, a part of the material of the connection portion between the first lid 1 and the second lid 2 may be cut off, and the thickness of the connection portion may be thinned to form a structure of one or more connection pieces 32 spaced apart from each other. The connection piece 32 may be a connection member structure fixed between the first lid 1 and the second lid 2, and its material may be the same as or different from the material of the first lid 1 and / or the second lid 2. The connection piece 32 is not only used to realize the rotatable connection between the first lid 1 and the second lid 2, but also used to drive the automatic rebound of the second lid 2, to avoid the operator forgetting to close the second lid 2 and causing the risk of electric shock due to erroneous contact.

[0101] Here, for example, in order for the connection piece 32 to realize functions such as connection and bounce, its performance is as follows: The thickness of the connection piece 32 is 0.7 mm or less, The tensile strength of the material of the connection piece 32 is 20 to 50 MPa; The breaking elongation of the material of the connection piece 32 is 15% or less; The bending strength of the material of the connection piece 32 is 30 to 80 MPa; The Charpy notch impact strength of the material of the connecting piece 32 is 35KJ / m 2 and At least one of the following conditions must be satisfied: the width of the connecting piece 32 must be 3 mm or more.

[0102] The connecting piece 32 satisfying at least one of the above conditions has good toughness, can generate good recoverable deformation, is advantageous for reliably driving the automatic rebound of the second lid 2, and has appropriate hardness, is easy to bend, and is not easily brittle, which is advantageous for realizing repeated opening and closing multiple times. Here, the thickness of the connecting piece 32 refers to the distance dimension between the surface of the connecting piece 32 facing the opening 15 and the surface away from the opening 15 (i.e., the inner and outer surfaces of the connecting piece 32). The width of the connecting piece 32 refers to the dimension of the connecting piece 32 along the third direction Z.

[0103] In order to make the material of the connection piece 32 satisfy all the above requirements, in some embodiments, the connection piece 32 is made of a nylon material such as a PA6 material. PA6 (Polyamide 6), also known as nylon 6, is a type of nylon material and belongs to a polymer compound. The tensile strength of PA6 is 45 MPa or more and 50 MPa or less, the elongation at break is 3% or more and 15% or less, the bending strength is 65 MPa or more and 80 MPa or less, and the Charpy notch impact strength is 5 KJ / m 2 More than or equal to 35KJ / m 2 The connection piece 32 made of PA6 has appropriate tensile strength, bending strength, breaking elongation and impact strength, is not too soft and is not too hard, the connection piece 32 can be folded repeatedly and is not easily brittle.

[0104] In the lid closing mechanism 3, the number of the connection pieces 32 may be one, two or more. Referring to Figs. 28 to 33, in some embodiments, the lid closing mechanism 3 includes at least two connection pieces 32, and these at least two connection pieces 32 are arranged at an interval along the extension direction of the rotation axis of the second lid 2. In this way, on the one hand, the connection between the second lid 2 and the first lid 1 is more solid and secure, and on the other hand, each connection piece 32 can apply a rebound force to the second lid 2, which is advantageous for driving the automatic closing of the second lid 2 more reliably.

[0105] As a further improvement of each of the above embodiments, referring to FIG. 11, in some embodiments, the protective lid 104 includes a deceleration member 4 that is connected to the first lid 1 and the second lid 2, and when the closing mechanism 3 rotates the second lid 2 in the second rotational direction, an acting force in the first rotational direction is applied to the second lid 2, thereby slowing down the closing speed of the second lid 2.

[0106] The installed deceleration member 4 can slow down the closing speed of the second lid 2, so that the closing mechanism 3 and the deceleration member 4 cooperate to rotate the second lid 2 to open it, and after the worker rotates and opens it, and cancels the external force, the second lid 2 can slowly rotate to close. In this way, sufficient time can be taken to attach and detach the high-pressure drawer member 105, making it easy for the worker to cancel the external force to open the second lid 2 at the same time as attaching and detaching the high-pressure drawer member 105, and the second lid 2 slowly rotates at a constant speed to close at the same time as attaching and detaching the high-pressure drawer member 105. In such a case, the automatic closing process of the second lid 2 may be performed in synchronization with the attachment and detachment process of the high-pressure drawer member 105, and since there is no need to occupy additional time, it is advantageous to improving the efficiency of the attachment and detachment maintenance. At the same time, the second lid 2 is not closed too quickly, and the worker performing the attachment and detachment maintenance is unlikely to be pinched and injured, so safety is further improved. Then, after the worker opens the second lid 2, the force acting on the second lid 2 can be cancelled, and there is no need to support the second lid 2 with his / her hand. Therefore, the worker's hand for rotating the second lid 2 is freed and can be directly used for the installation and removal work of the high pressure extraction member 105, which is advantageous in reducing the number of workers required for the entire installation and removal maintenance process, and makes it easy for one person to complete the entire installation and removal maintenance process.

[0107] As can be seen from this, by adding a deceleration member 4 based on the closing mechanism 3, it is advantageous to further improve the safety performance of the battery 10 and to improve the efficiency of installation and removal maintenance of the battery 10.

[0108] Compared with the connecting piece 32, the spring 31 is generally more likely to cause the second cover 2 to close quickly, so the deceleration member 4 is particularly applied to the embodiment in which the cover closing mechanism 3 includes the spring 31. Referring to Fig. 11, in the embodiment in which the cover closing mechanism 3 includes the spring 31 and the protective cover 104 includes the deceleration member 4, for example, the deceleration member 4 and the spring 31 of the cover closing mechanism 3 are disposed on opposite sides of the second cover 2, thus making it easier for the deceleration member 4 and the spring 31 to apply a rotational force having an opposite direction to the second cover 2 when the second cover 2 rotates, and the layout is more reasonable, making the overall structure simpler and more compact.

[0109] As one embodiment of the deceleration member 4, referring to Fig. 11 in combination with Fig. 27, the deceleration member 4 includes a damper 41. Specifically, as shown in Fig. 27, the damper 41 is a rotation damper, which includes an internal damper 411 and an external damper 412, the external damper 412 is fitted to the outside of the internal damper 411, and a viscous fluid is provided between them to achieve a damping effect and slow down the rotation speed. In this case, the damper 41 may be connected to the second lid 2 via the internal damper 411, and when the second lid 2 automatically rotates closed by being driven by the closing mechanism 3, the internal damper 411 rotates accordingly, causing rotation relative to the external damper 412. When the internal damper 411 rotates relative to the external damper 412, the viscous fluid located between the internal damper 411 and the external damper 412 can apply a resistance force to the internal damper 411, so that the rotation speed of the second lid 2 can be slowed down and the second lid 2 can be controlled to close slowly.

[0110] In each of the above embodiments, the method of connecting the deceleration member 4 to the first cover 1 and the second cover 2 may be various.

[0111] For example, the deceleration member 4 is engaged with the first cover 1, which is simpler in structure and more convenient to assemble. For example, referring to Fig. 14 in combination with Fig. 19 and Fig. 27, in some embodiments, a boss 414 is provided on the deceleration member 4, a bayonet 11d is provided on the first cover 1, and the boss 414 is engaged with the bayonet 11d to realize the engagement between the deceleration member 4 and the first cover 1. Specifically, when the deceleration member 4 includes the damper 41, the boss 414 is provided on the external damper 412 of the damper 41, and in this manner, the external damper 412 is engaged with the first lid 1, thereby achieving engagement between the damper 41 and the first lid 1. When the second lid 2 rotates relative to the first lid 1, the external damper 412 and the first lid 1 are fixed relatively to each other without rotating together with the second lid 2, thereby generating relative rotation with the internal damper 411, making it easier to achieve the damping effect of the damper 41 and slowing down the closing speed of the second lid 2.

[0112] For example, the deceleration member 4 is engaged with the second lid 2, which is simpler in structure and more convenient to assemble. For example, referring to Fig. 11 and combining Fig. 25 and Fig. 27, in some embodiments, an engagement block 413 is provided on the deceleration member 4, a second engagement groove 215 is provided on the second lid 2, and the engagement block 413 is engaged with the second engagement groove 215 to realize the engagement between the deceleration member 4 and the second lid 2. Specifically, when the deceleration member 4 includes the damper 41, the engagement block 413 is provided on the internal damper 411 of the damper 41, in this manner, the internal damper 411 is engaged with the second lid 2, and further, the engagement between the damper 41 and the second lid 2 is realized, and when the second lid 2 rotates relative to the first lid 1, the internal damper 411 can rotate together with the second lid 2, thereby generating rotation relative to the external damper 412, facilitating the realization of the damping effect of the damper 41, and slowing down the closing speed of the second lid 2.

[0113] In addition, in order to realize a more reliable installation of the deceleration member 4, referring to Fig. 10 and combining with Fig. 11, in some embodiments, a second stopper cavity 11c is provided on the first cover 1, and the deceleration member 4 is installed in the second stopper cavity 11c. On this basis, the second stopper cavity 11c can play a role of a certain stopper for the deceleration member 4, so that the reliability of the installation of the deceleration member 4 on the first cover 1 can be improved, which is favorable for the deceleration member 4 to fully and reliably realize the deceleration function.

[0114] As one implementation of the second stopper cavity 11c, referring to FIG. 10 and combining with FIG. 11, in some embodiments, the first lid 1 includes a base 11 and a second cover 13, a second groove 11k is provided on the base 11, and the second cover 13 is removably connected to the base 11 and covers the second groove 11k to form the second stopper cavity 11c.

[0115] In the above installation manner, the second stopper cavity 11c is formed by engaging the base 11 with the second cover 13, and can effectively stop the deceleration member 4. The second cover 13 is detachably connected to the base 11, and can easily attach and detach the member located in the second stopper cavity 11c, such as the deceleration member 4. When it is necessary to attach or detach the member located in the second stopper cavity 11c, such as the deceleration member 4, the second cover 13 can be removed from the base 11 to open the space above the second groove 11k so as not to block it. At this time, the member located in the second stopper cavity 11c, such as the deceleration member 4, can be easily attached or detached, which is more efficient. After the attachment and detachment is completed, the second cover 13 can be attached on the base 11, and the stopper can be performed again.

[0116] 16 to 24, in some embodiments, the second cover 13 is engaged with the base 11. Specifically, as shown in Figs. 16 to 24, in some embodiments, a groove 11e is provided on the base 11, a connecting rib 11f is provided on the second cover 13, and a convex rib 11h is provided on the connecting rib 11f, and the connecting rib 11f is engaged with the groove 11e and is tightly fitted with the groove 11e via the convex rib 11h, thereby preventing the connecting rib 11f from slipping out of the groove 11e.

[0117] In the above installation method, based on the fitting of the connecting rib 11f and the convex rib 11h with the groove 11e, on the one hand, the second cover 13 is engaged with the base 11, which can easily realize a removable connection between the second cover 13 and the base 11, and further facilitates attachment and detachment to components located in the second stopper cavity 11c, such as the deceleration member 4; on the other hand, after the connecting rib 11f and the convex rib 11h are inserted into the groove 11e, the convex rib 11h and the groove 11e are tightly fitted together, which ensures a secure connection and is not likely to come off, which is advantageous to realizing a firm attachment of the second cover 13 to the base 11, and facilitates the second cover 13 to act as a reliable stopper for the deceleration member 4, etc.

[0118] In each of the above embodiments, the free end of the second lid 2 and the first lid 1 may be connected by the engagement structure 6 or the magnetic attraction structure 7. In this way, the connection between the free end of the second lid 2 and the first lid 1 is more solid, and after the second lid 2 returns to the closed position by the action of the closing mechanism 3, the second lid 2 can be more stably maintained in the closed position, sufficiently shielding the high voltage drawer member 105 and effectively reducing the risk of electric shock.

[0119] The above-mentioned installation manner is particularly applicable when the cover closing mechanism 3 includes the connecting piece 32. Compared with the spring 31, the rebound force that the connecting sheet 32 ​​can apply is relatively small, and there may be a problem that the connecting sheet 32 ​​itself cannot completely automatically close the second cover 2 or cannot stably maintain the second cover 2 in the closed position, and this problem is more likely to occur with multiple openings and closings of the second cover 2. Therefore, when the cover closing mechanism 3 includes the connecting piece 32, the engaging structure 6 or the magnetic attraction structure 7 can be further installed to further restrain the free end of the second cover 2, thereby effectively solving the corresponding problem and allowing the second cover 2 to completely close and stably maintain the closed position. Compared with the case where the second cover 2 is completely open, even when the second cover 2 is partially closed, it can still play a certain shielding role for the high-voltage draw-out member 105, thereby reducing the risk of electric shock and improving the safety of use. However, by installing the engagement structure 6 and the magnetic attraction structure 7 to further restrain the free end of the second cover 2, the risk of electric shock can be more effectively reduced and the safety of use can be improved.

[0120] Also, referring to FIG. 12 and FIG. 13, in each of the above embodiments, the first cover 1 may have a stopper portion 16, and the stopper portion 16 contacts the second cover 2 to limit the maximum opening angle of the second cover 2. In this way, on the one hand, it is possible to prevent the opening angle of the second cover 2 from being too large, thereby avoiding the opening angle of the second cover 2 being too large and interfering with other members. On the other hand, it is possible to facilitate the opening operation of the operator, and the operator only needs to continue rotating the second cover 2 in the first rotation direction until the second cover 2 and the stopper portion 16 come into contact with each other and the second cover 2 cannot rotate. On the other hand, it is possible to adjust the maximum opening angle of the second cover 2 by adjusting the position and / or structure of the stopper portion 16, thereby realizing customizable adjustment of the maximum opening angle of the second cover 2, and it is easy to flexibly adapt to different usage demands. For example, referring to FIG. 12, the stopper portion 16 limits the maximum opening angle of the second lid 2 to 180° or more. At this time, the maximum opening angle of the second lid 2 is large, the high-pressure extraction member 105 is fully exposed, and a larger operating space is provided for the operator, making it easier for the operator to operate it. This is advantageous for improving the efficiency of installation and removal maintenance by the operator.

[0121] Returning to FIG. 2, in some embodiments, an avoidance groove 109 is provided on the inner wall of the housing lid 108 of the battery 10, and the avoidance groove 109 avoids the second lid 2, thereby preventing the second lid 2 from interfering with the housing lid 108 during rotation, thus further ensuring the smooth opening and closing of the second lid 2. For example, as shown in FIG. 2, the avoidance groove 109 is arc-shaped, which is concave upward. When the second lid 2 rotates 90°, the highest point of the second lid 2 is lower than the avoidance groove 109 and does not interfere with the housing lid 108.

[0122] As a further improvement of each of the above embodiments, referring to Fig. 30, a grip portion 5 is provided on the second lid 2. In this way, when an operator opens or closes the second lid 2, the operator can grip the grip portion 5 to rotate the second lid 2, making it easier for the operator to apply force.

[0123] Each embodiment shown in FIGS. 2 to 36 will be described in further detail below.

[0124] First, the first embodiment shown in Figs. 2 to 27 will be further described.

[0125] As shown in Figs. 2 to 8, in this embodiment, the protective cover 104 is an insulating member, which is covered on the outside of the high-voltage drawer member 105 and is removably connected to the base 103. Here, as shown in Fig. 5, the base 103 is installed on the end plate 10c of the frame 102 and connected to the high-voltage drawer member 105 via a fastener 106 such as a bolt. And, as shown in Fig. 6, the protective cover 104 is rotatably connected to the base 103 via a connecting shaft 117, and when needed, the connecting shaft 117 is inserted into the shaft hole of the base 103 to realize the installation of the protective cover 104 on the base 103, and when not needed, the connecting shaft 117 is removed from the shaft hole of the base 103 to realize the removal of the protective cover 104. As shown in Fig. 8, the high-voltage drawer member 105 is approximately Z-shaped. A portion of the high voltage draw member 105 is located in the accommodating cavity 14 of the protective cover 104, fastened onto the base 103 by fasteners 106, fastened to a connecting bus bar member (not shown) by the fasteners 106, and electrically connected to the high voltage draw member 105 of another single assembly via the connecting bus bar member. Meanwhile, another portion of the high voltage draw member 105 extends from the accommodating cavity 14 along the second direction X and is electrically connected to the battery cell 101 (shown in FIG. 4 ) of the single assembly corresponding to itself.

[0126] The structure of the protective lid 104 is further shown in Figures 9-27.

[0127] As shown in FIGS. 9 to 15, in this embodiment, the protective lid 104 includes a first lid 1, a second lid 2, a spring 31 used as the closing mechanism 3, and a damper 41 used as the deceleration member 4.

[0128] Here, the first lid 1 is connected to a base 103 and provides a mounting base for the second lid 2, the closing mechanism 3 and the deceleration member 4. Figures 16 to 24 show the structure of the first lid 1 in this embodiment.

[0129] 16 to 24, in this embodiment, the first lid 1 includes a base 11, a first cover 12, and a second cover 13. Here, the first cover 12 and the second cover 13 are both connected onto the base 11, and together with the base 11, surround and form a first stopper cavity 11b and a second stopper cavity 11c for accommodating the spring 31 and the damper 41, respectively.

[0130] Specifically, as shown in Figs. 16 to 19, the base 11 includes an accommodation portion 111 and a support portion 112. An accommodation cavity 14 for accommodating a high-pressure drawer member 105 is located between the accommodation portion 111 and the support portion 112. As can be seen by combining Figs. 16 and 17, the accommodation portion 111 is connected to the base 103 via the support portion 112. The first cover 12 and the second cover 13 are connected to the accommodation portion 111, and together with the accommodation portion 111, surround and form the first stopper cavity 11b and the second stopper cavity 11c, respectively.

[0131] 16 to 19, the support part 112 includes a first support 113 and a second support 114, and the first support 113 and the second support 114 are arranged at an interval along the third direction Y. The connection shaft 117 is installed on the first support 113, and the first cover 1 is rotatably connected to the base 103 via the first support 113. The connection shaft 117 and the first support 113 form an integrated structure, and thus, when attaching or detaching the protective cover 104, there is no need to attach or detach the connection shaft 117 separately, making the operation simple.

[0132] As shown in FIGS. 16 to 19, the storage section 111 is connected onto the first support 113 and the second support 114, specifically, connected to the tops of the first support 113 and the second support 114 along the second direction X. In this way, the space between the first support 113, the second support 114, and the storage section 111 forms the storage cavity 14. The top of the storage cavity 14 is open to form an opening 15. The opening 15 is approximately Z-shaped. In addition, as can be seen from FIGS. 18 to 19, in this embodiment, the storage section 111 is approximately semicylindrical, its axis extends along the third direction Y, and a first groove 11g, a third groove 11m, and a second groove 11k are provided inside the storage section 111, which are sequentially connected along the third direction Y. A groove 11e is provided on the outer wall of the housing portion 111 corresponding to the first groove 11g and the second groove 11k. The longitudinal direction of this groove 11e is along the third direction Y. One end of this groove 11e facing outward in the second direction X is open, and one end adjacent to the third groove 11m in the third direction Y is also open.

[0133] As shown in Figs. 16-17 and 20, the first cover 12 is substantially semi-cylindrical, which is engaged above the first groove 11g to form a first stopper cavity 11b for accommodating the spring 31. Here, as can be seen from Fig. 20, a connecting rib 11f is provided on the first cover 12, and a convex rib 11h is provided on the connecting rib 11f. As can be seen from a combination of Figs. 22-24, the connecting rib 11f is substantially L-shaped, and the convex rib 11h is substantially triangular pyramid-shaped. The connecting rib 11f and the convex rib 11h are fitted into a groove 11e on the outer wall of the first groove 11g, thereby realizing the engagement between the first cover 12 and the accommodating portion 111. 17-19, when the first cover 12 is assembled on the receiving part 111, the connecting rib 11f and the convex rib 11h slide into the groove 11e from one end of the groove 11e that is open toward the third groove 11m, and the L-shaped surface of the connecting rib 11f engages with the side wall of the groove 11e, and the convex rib 11h and the groove wall of the groove 11e are tightly fitted together, thus effectively restricting the displacement of the first cover 12 in each direction, and realizing that the first cover 12 is firmly attached to the first lid 1, and the first cover 12 is easily removed from the first lid 1, and facilitating the installation, removal and replacement of the spring 31 in the first stopper cavity 11b. Also, as shown in FIGS. 18-20, in this embodiment, the inner wall of the first cover 12 and the inner wall of the first groove 11g are both provided with an arc-shaped rib 119. Specifically, at least two arcuate ribs 119 are provided on the inner wall of the first groove 11g, and these at least two arcuate ribs 119 are arranged at intervals along the third direction Y (which is also the direction of the rotation axis of the second lid 2 and the central axis of the spring 31), so that the arcuate ribs 119 arranged at intervals along the central axis of the spring 31 are provided on the inner wall of the first stopper cavity 11b. The inner diameter of the arcuate rib 119 matches the outer diameter of the spring 31. The advantage of providing the arcuate rib 119 is that it facilitates the stopper for the spring 31.14-15, after being attached to the first stopper cavity 11b, the spring 31 is positioned on the arc-shaped rib 119, so that the spring 31 can be supported and stopped by the arc-shaped rib 119 to prevent the spring 31 from shifting, which is advantageous for the spring 31 to have better torsional deformation during the rotation of the second cover 2. At the same time, compared to a method of directly thickening the entire wall thickness of the first stopper cavity 11b so that the inner diameter matches the outer diameter of the spring 31, the installation of the arc-shaped rib 119 reduces the increase in the overall weight, that is, the installation of the arc-shaped rib 119 can realize an effective stop for the spring 31 without increasing the weight too much.

[0134] As shown in Figs. 16-17 and 21-24, the second cover 13 is substantially semi-cylindrical, and is engaged with the upper part of the second groove 11k to form a second stopper cavity 11c for accommodating the damper 41. Here, as can be seen from Figs. 21-24, a connecting rib 11f is provided on the second cover 13, and a convex rib 11h is provided on the connecting rib 11f. The connecting rib 11f is substantially L-shaped, and the convex rib 11h is substantially triangular pyramid-shaped. The connecting rib 11f and the convex rib 11h are fitted into a groove 11e on the outer wall of the second groove 11k, thereby realizing the engagement between the second cover 13 and the accommodating portion 111. When the second cover 13 is assembled onto the accommodating portion 111, referring to FIG. 17, the connecting rib 11f and the convex rib 11h slide into the groove 11e from one end open toward the third groove 11m of the groove 11e, engaging the L-shaped surface of the connecting rib 11f with the side wall of the groove 11e, and tightly fitting the convex rib 11h with the groove wall of the groove 11e, thus effectively restricting the displacement of the second cover 13 in all directions, and realizing that the second cover 13 is firmly attached to the first lid 1, while also making it easy to remove the second cover 13 from the first lid 1, and facilitating the installation, removal and replacement of the damper 41 in the second stopper cavity 11c.

[0135] The second cover 2 is rotatably installed on the first cover 1, and is for closing and opening the opening 15 and controlling whether the high pressure drawing member 105 is exposed. FIG. 25 shows the structure of the second cover 2 in this embodiment. As shown in FIG. 25, in this embodiment, the second cover 2 includes a rotating shaft 21 and a cover body 22. The cover body 22 is rotatably connected to the first cover 1 via the rotating shaft 21 and is for opening and closing the opening 15. Here, the rotating shaft 21 includes a first shaft body 211, a second shaft body 212, and a third shaft body 213. The second shaft body 212 and the third shaft body 213 are respectively connected to the first axial end and the second axial end of the first shaft body 211, and the diameters of the second shaft body 212 and the third shaft body 213 are both smaller than the diameter of the first shaft body 211. The lid body 22 is fixedly connected to the first shaft body 211, and includes a first lid body 221, a second lid body 222, and a third lid body 223. The first lid body 221 is connected to the first shaft body 211. The second lid body 222 is connected between the first lid body 221 and the third lid body 223, and is bent relative to both the first lid body 221 and the third lid body 223, so that the entire lid body 22 is approximately Z-shaped and matches the shape of the opening 15.

[0136] As can be seen by combining Figures 11 and 10, when the second lid 2 is attached onto the first lid 1, the first shaft 211 is rotatably positioned in the third groove 11m, the second shaft 212 extends into the first stopper cavity 11b and is inserted into the spring 31, and the third shaft 213 extends into the second stopper cavity 11c and is inserted into the damper 41, and the lid body 22 fits into the opening 15, thereby opening and closing the opening 15 when rotated in the first and second rotation directions, respectively.

[0137] 12-13, in this embodiment, the top boundary line of the third groove 11m away from the opening 15 constitutes a stopper portion 16 for limiting the maximum opening angle of the second lid 2. When the second lid 2 is opened to the maximum angle, the stopper portion 16 abuts against the lid body 22 to prevent the second lid 2 from continuing to rotate. As can be seen from FIG. 12, in this embodiment, the maximum opening angle of the second lid 2 is greater than 180°, about 190°.

[0138] The spring 31 is for driving the second cover 2 to automatically bounce back after the external force is cancelled. As shown in FIG. 26, the spring 31 has a first end 311 and a second end 312. As shown in FIG. 10-15, as can be seen from FIG. 25, the spring 31 is located in the first stopper cavity 11b and fitted onto the second shaft body 212, so that the spring 31 can be jointly stopped by the first stopper cavity 11b and the second shaft body 212. And the first end 311 and the second end 312 of the spring 31 are engaged with the side wall of the first stopper cavity 11b and the first shaft body 211, respectively. 11 and 25, a first engagement groove 214 is provided at a first axial end of the first shaft body 211, and the second end 312 of the spring 31 is inserted into the first engagement groove 214 to realize engagement between the second end 312 of the spring 31 and the rotating shaft 21. At the same time, as shown in FIG. 15, an insertion opening 11a is provided on the inner wall of the first cover 12, and the first end 311 of the spring 31 is inserted into the insertion opening 11a to realize engagement between the first end 311 of the spring 31 and the side wall of the first stopper cavity 11b. Based on this, the second end 312 of the spring 31 can rotate relative to the first lid 1 together with the second lid 2, and since the first end 311 of the spring 31 and the first lid 1 maintain a relative stationary state, when the second lid 2 rotates, the second end 312 of the spring 31 can rotate relative to the first end 311 of the spring 31. Thus, when an operator rotates the second lid 2 in the first rotation direction to open the second lid 2, the spring 31 is twisted and elastic force is accumulated. However, after the operator cancels the rotational force applied to the second lid 2 in the first rotation direction, the spring 31 releases the accumulated elastic force, driving the second lid 2 to automatically bounce back and rotate in the second rotation direction, and when the second lid 2 returns to the initial closed position, the opening 15 can be closed. Since the second lid 2 automatically bounces back due to the action of the spring 31 and shields the high-pressure extraction member 105, it is possible to avoid safety risks caused by forgetting to close the second lid 2, and effectively improve the safety of use.Here, the cross-sectional diameter of one turn of the spring 31 is about 7 mm, and the number of turns is 2 to 5 turns, which is advantageous in preventing the automatic rebound speed from being too fast, and can provide a certain time for attaching and detaching the high pressure extraction member 105.

[0139] The damper 41 is for controlling the automatic rebound speed of the second lid 2. FIG. 27 shows the structure of the damper 41. As shown in FIG. 27, in this embodiment, the damper 41 includes an inner damper 411 and an outer damper 412 that are fitted inside and outside. A viscous fluid is provided between the inner ring of the outer damper 412 and the outer ring of the inner damper 411, and when the inner damper 411 rotates relative to the outer damper 412, it prevents the inner damper 411 from rotating, thereby realizing the damping effect and achieving the purpose of deceleration. Two engaging blocks 413 are provided on the inner damper 411, and the two engaging blocks 413 are arranged symmetrically with respect to the center of the inner damper 411. A boss 414 is provided on the outer wall of the outer damper 412. FIGS. 10-15 show the mounting manner of the damper 41 on the first lid 1 and the second lid 2. 10 to 15, as can be seen in combination with FIG. 25, the damper 41 is installed in the second stopper cavity 11c and fitted onto the third shaft body 213, so that the damper 41 and the spring 31 are located on opposite sides of the first shaft body 211, and the damper 41 can be jointly stopped by the second stopper cavity 11c and the third shaft body 213. In addition, the inner damper 411 and the outer damper 412 of the damper 41 are engaged with the second cover 2 and the first cover 1, respectively. Specifically, as can be seen by combining Figures 11 and 25, two engagement grooves 215 are provided at the second axial end of the first shaft body 211, and these two second engagement grooves 215 are arranged symmetrically with respect to the central axis of the rotating shaft 21 and correspond one-to-one to the two engagement blocks 413 on the internal damper 411, and the two engagement blocks 413 are respectively engaged with the two engagement grooves 215, thereby realizing the engagement between the internal damper 411 and the rotating shaft 21, and further, realizing the engagement between the internal damper 411 and the second lid 2. In addition, as can be seen by combining Figures 11, 19 and 25, a bayonet 11d is provided on the groove wall of the second groove 11k, and the bayonet 11d fits into a boss 414 on the external damper 412, and the boss 414 engages with the bayonet 11d, thereby realizing engagement between the external damper 412 and the base 11, and further realizing engagement between the external damper 412 and the first lid 1.Based on this, the external damper 412 and the first lid 1 maintain a relative stillness, and the internal damper 411 can rotate together with the second lid 2, so that when the second lid 2 is automatically rebounded by the drive of the spring 31, the internal damper 411 can be caused to rotate relative to the external damper 412, and the viscous fluid located between the inner and outer dampers can prevent the rotation of the internal damper 411, thereby slowing down the closing speed of the second lid 2 and providing sufficient time for the attachment and detachment of the high pressure extraction member 105 and the fastener 106.

[0140] According to the above installation, after opening the protective lid 104 of this embodiment, an operator can cancel the external force and attach or detach the high-pressure drawer member 105. While attaching or detaching the high-pressure drawer member 105, the second lid 2 can be closed slowly at a constant speed due to the combined action of the spring 31 and the damper 41, thereby preventing a safety problem caused by an operator forgetting to close the protective lid 104.

[0141] In this embodiment, the second cover 2 can be opened and closed at least 50 times, which is a large number of times and has a long service life.

[0142] Next, the embodiments shown in Figs. 28 to 36 will be further described.

[0143] First, the second embodiment shown in FIGS. 28 to 30 will be further described.

[0144] As shown in Figs. 28-30, in this embodiment, the closing mechanism 3 of the protective cover 104 does not include a spring 31, but includes a plurality of connecting pieces 32. The plurality of connecting pieces 32 are arranged at intervals in sequence along the third direction Y, and are all connected to the first cover 1 and the second cover 2 of the protective cover 104, so that the second cover 2 can rotate relative to the first cover 1. Each connecting piece 32 is made of PA6 material, and the thickness of each connecting piece 32 is 0.7 mm or less (for example, 0.4 mm), and the width is 3 mm or more. In this way, the connecting piece 32 forms a thin-walled hinge with excellent performance, which allows the second cover 2 to be repeatedly folded back during rotation, and drives the second cover 2 to rotate in the second rotation direction after the external force to open the second cover 2 is removed, thereby realizing the automatic rebound of the second cover 2, and avoiding a safety problem caused by an operator forgetting to close the protective cover 104. Here, the outer surface of the connection piece 32 is flat, and the connection piece 32 is connected to one end of the first lid 1 along the second direction X. The outer surface of the connection piece 32 is a surface that faces away from the opening 15 of the connection piece 32.

[0145] 30, in this embodiment, the free end of the second lid 2 and the first lid 1 are connected by an engagement structure 6. Specifically, the engagement structure 6 includes a stopper 61 and a stopper groove 62, the stopper 61 is installed on the free end of the second lid 2, the stopper groove 62 is installed on the first lid 1, and the stopper 61 is engaged with the stopper groove 62. Here, a base 115 and a bump 116 are provided on the first lid 1, and the base 115 and the bump 116 are spaced apart in the first direction Z, and the space between them forms a stopper groove 62, that is, the stopper groove 62 is located between the base 115 and the bump 116. Specifically, the base 115 and the bump 116 are installed on the support portion 112 of the first lid 1.

[0146] In addition, as shown in FIG. 30, in this embodiment, a grip portion 5 is provided on the second lid 2, which can be utilized by an operator to easily open and close the second lid 2.

[0147] According to the above installation, after opening the protective lid 104 of this embodiment, an operator can cancel the external force and attach or detach the high-pressure draw-out member 105. While attaching or detaching the high-pressure draw-out member 105, the second lid 2 rotates by a certain angle in the second rotation direction due to the action of the connecting piece 32. Then, the operator manually engages the stopper 61 with the stopper groove 62 to completely close the second lid 2, thereby preventing a safety problem caused by the operator forgetting to close the protective lid 104.

[0148] Figures 31 to 36 show some modified examples of the embodiment shown in Figures 28 to 30. Therefore, for simplicity, the following description will focus on the differences between these modified examples and the embodiment shown in Figures 28 to 30.

[0149] Here, Fig. 31 shows a first modified example of the embodiment shown in Figs. 28 to 30. In this first modified example, the outer surface of the connection piece 32 is not flat but curved.

[0150] Figure 32 shows a second modified example of the embodiment shown in Figures 28 to 30. In this second modified example, the connection position of the connection piece 32 is changed, and the connection piece 32 is not connected to one end of the first lid 1 along the second direction X, but is connected to one end of the first lid 1 along the third direction Y.

[0151] 33-36 show a third modified example of the embodiment shown in FIGS. 28-30. In this third modified example, the free end of the second lid 2 and the first lid 1 are not connected by the engagement structure 6 but by the magnetic attraction structure 7. As shown in FIG. 33, the magnetic attraction structure 7 includes a first magnetic attraction member 71 and a second magnetic attraction member 72, the first magnetic attraction member 71 is installed on the first lid 1, the second magnetic attraction member 72 is installed on the free end of the second lid 2, and the first magnetic attraction member 71 and the second magnetic attraction member 72 are magnetically attracted to each other. Here, the first magnetic attraction member 71 is a magnet, which is attached to the first lid 1. As shown in Figs. 34-35, a mounting groove 11n is provided on the base 115 of the first lid 1, the first magnetic attraction member 71 is located in the mounting groove 11n, and a flange 118 is provided on the inner wall of the mounting groove 11n. Accordingly, a sink groove 711 is provided on the first magnetic attraction member 71, and the flange 118 is fitted into the sink groove 711 to realize the engagement between the first magnetic attraction member 71 and the first lid 1. The second magnetic attraction member 72 is a metal member (e.g., a stainless steel member), which is engaged with the second lid 2. As shown in Fig. 36, an insertion groove 224 is provided on the second lid 2, and the second magnetic attraction member 72 is engaged with the insertion groove 224 to realize the engagement between the second magnetic attraction member 72 and the second lid 2. In this way, when the second lid 2 automatically bounces back to a certain angle due to the action of the connecting piece 32, the second magnetic attraction member 72 on the second lid 2 is attracted by the first magnetic attraction member 71 of the first lid 1, and the second lid 2 continues to rotate in the second rotation direction due to the action of the magnetic attraction structure 7, and continues to return to the closed position and close completely, thereby achieving the effect of automatic engagement, so that the second lid 2 can be closed automatically without the need for manual operation by an operator.

[0152] As can be seen from this, the protective lid 104 according to each embodiment of the present application has an automatic closing function, which can effectively prevent the high-voltage pull-out member 105 from being widely exposed due to an operator forgetting to close the protective lid 104, causing the risk of electric shock due to accidental contact, and can effectively improve the safety performance of the battery 10 and the power consumption device 100.

[0153] According to the protective cover 104 of each embodiment of the present application, the present application further provides a manufacturing method for the protective cover 104. As shown in FIG. 37, the manufacturing method includes: A step S100 of providing a first cover 1, the first cover 1 being for fixing on a frame 102 of a battery 10, a receiving cavity 14 being provided on the first cover 1, the receiving cavity 14 being for receiving a high-pressure extraction member 105, the receiving cavity 14 having an opening 15, the opening 15 being for exposing the high-pressure extraction member 105; Step S200 of providing a second cover 2, the second cover 2 being rotatably mounted on the first cover 1, and opening and closing an opening 15 when the second cover 2 rotates in a first rotation direction and a second rotation direction relative to the first cover 1, respectively; The method includes providing a closing mechanism 3, the closing mechanism 3 being connected to a first lid 1 and a second lid 2, and including a step S300 of rotating the second lid 2 in a second rotational direction after the second lid 2 is opened and the external force opening the second lid 2 is removed.

[0154] The protective cover 104 manufactured by the above method has an automatic closing function, which can improve the safety performance of the battery 10 and the power consuming device 100.

[0155] Here, the order of steps S100, S200 and S300 is not limited and may be flexibly adjusted.

[0156] Finally, it should be explained that the above-mentioned embodiments are only used to explain the technical solution of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art can still understand that the technical solutions described in the above-mentioned embodiments can still be modified, or some or all of the technical features therein can be replaced with equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solution from the scope of the technical solution of each embodiment of the present application, and should be included in the scope of the claims and the specification of the present application. In particular, as long as there is no structural contradiction, any of the technical features mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, and includes all technical solutions included in the claims.

[0157] Here, 100, power consuming device, 200, vehicle, 201, controller, 202, power equipment, 203, motor, 10, battery, 101, battery cell, 102, frame, 103, base, 104, protective cover, 105, high-voltage drawer member, 106, fastener, 107, outer casing, 108, casing cover, 109, avoidance groove, 10a, end cap, 10b, side plate, 10c, end plate, 1, first cover, 11, base, 111, storage section, 112, support section, 113, first support, 114, second support, 115, base, 116, bump, 117, connection shaft, 118, flange, 119, arc-shaped rib, 12, first cover, 13, second cover, 14, storage cavity, 15, opening, 16, stopper section, 11a, insertion port, 11b, first stopper cavity, 11c, second stopper cavity, 11d, bayonet, 11e, groove, 11f, connection rib, 11g, first groove, 11h, convex rib, 11k, second groove, 11m, third groove, 11n, mounting groove, 2, second cover, 21, rotating shaft, 211, first shaft body, 212, second shaft body, 213, third shaft body, 214, first engagement groove, 215, second engagement groove, 22, cover body, 221, first cover body, 222, second cover body, 223, third cover body, 224, insertion groove, 3, lid closing mechanism, 3a, elastic member, 31, spring, 311, first end, 312, second end, 32, connecting piece, 4, deceleration member, 41, damper, 411, internal damper, 412, external damper, 413, engagement block, 414, boss, 5. Grip part, 6, engagement structure, 61, stopper, 62, stopper groove, 7, magnetic attraction structure; 71, first magnetic attraction member; 711, sink groove; 72, second magnetic attraction member.

Claims

1. A protective cover (104), A first lid (1) to be fixed on a frame (102) of a battery (10), the first lid (1) having a receiving cavity (14) for receiving a high-pressure drawer member (105), the receiving cavity (14) having an opening (15), the opening (15) for exposing the high-pressure drawer member (105); a second lid (2) that is rotatably mounted on the first lid (1) and opens and closes the opening (15) when it rotates in a first rotation direction and a second rotation direction relative to the first lid (1), respectively; a closing mechanism (3) connected to the first lid (1) and the second lid (2), which rotates the second lid (2) in the second rotation direction after the second lid (2) is opened and an external force for opening the second lid (2) is removed; the closing mechanism (3) includes an elastic member (3a), the elastic member (3a) is connected to the first lid (1) and the second lid (2), and after an external force for opening the second lid (2) is removed, an elastic restoring force of the elastic member (3a) drives the second lid (2) to rotate in the second rotation direction; A first stopper cavity (11b) is provided on the first lid (1), and the spring (31) is installed in the first stopper cavity (11b); The protective lid (104) is characterized in that the first lid (1) includes a base (11) and a first cover (12), a first groove (11g) is provided on the base (11), and the first cover (12) is removably connected to the base (11), covers the first groove (11g), and forms the first stopper cavity (11b).

2. The protective lid (104) according to claim 1, characterized in that the elastic member (3a) includes a spring (31), a first end (311) of the spring (31) being connected to the first lid (1) and a second end (312) of the spring (31) being connected to the second lid (2), whereby after an external force for opening the second lid (2) is removed, the second lid (2) rotates in the second rotation direction driven by the elastic restoring force of the spring (31).

3. The protective lid (104) according to claim 2, characterized in that a first end (311) of the spring (31) is attached to the first lid (1) and / or a second end (312) of the spring (31) is attached to the second lid (2).

4. 2. The protective lid (104) according to claim 1, characterized in that the first cover (12) is engaged with the base (11).

5. The protective cover (104) according to claim 4, characterized in that a groove (11e) is provided on the base (11), a connecting rib (11f) is provided on the first cover (12), and a convex rib (11h) is provided on the connecting rib (11f), and the connecting rib (11f) is engaged with the groove (11e) and is press-fitted with the groove (11e) via the convex rib (11h), thereby preventing the connecting rib (11f) from slipping out of the groove (11e).

6. The protective lid (104) according to any one of claims 2 to 5, characterized in that the second lid (2) includes a rotating shaft (21) and a lid body (22), the rotating shaft (21) is rotatably installed on the first lid (1), the lid body (22) is connected to the rotating shaft (21) and opens and closes the opening (15), and a second end (312) of the spring (31) is connected to the rotating shaft (21).

7. The protective lid (104) according to claim 1, characterized in that the elastic member (3a) includes a connecting piece (32), and the second lid (2) is rotatably connected to the first lid (1) via the connecting piece (32), whereby after the external force for opening the second lid (2) is removed, the elastic restoring force of the connecting piece (32) drives the second lid (2) to rotate in the second rotation direction.

8. The connecting piece (32) is The thickness of the connection piece (32) is 0.7 mm or less; The tensile strength of the material of the connecting piece (32) is 20 to 50 MPa; The material of the connecting piece (32) has a breaking elongation of 15% or less; The bending strength of the material of the connecting piece (32) is 30 to 80 MPa; The Charpy notch impact strength of the material of the connecting piece (32) is 35 KJ / m ２ and 8. The protective cover (104) according to claim 7, characterized in that it satisfies at least one of the following: a width of the connecting piece (32) is 3 mm or more.

9. The protective lid (104) according to claim 7, characterized in that the connecting piece (32) is made of a nylon material.

10. 9. The protective lid (104) according to claim 8, characterized in that said connecting piece (32) is made of PA6 material.

11. The protective lid (104) according to any one of claims 7 to 10, characterized in that the closing mechanism (3) includes at least two connecting pieces (32), the at least two connecting pieces (32) being arranged at intervals along the extension direction of the rotation axis of the second lid (2).

12. The protective lid (104) according to any one of claims 1 to 11, characterized in that the protective lid (104) includes a deceleration member (4) connected to the first lid (1) and the second lid (2), and when the closing mechanism (3) rotates the second lid (2) in the second rotational direction, an acting force toward the first rotational direction is applied to the second lid (2), thereby slowing down the closing speed of the second lid (2).

13. The protective lid (104) according to claim 12, characterized in that the deceleration member (4) is engaged with the first lid (1) and / or the deceleration member (4) is engaged with the second lid (2).

14. 14. The protective lid (104) according to claim 12 or 13, characterized in that the deceleration member (4) and the spring (31) of the closing mechanism (3) are arranged on opposite sides of the second lid (2).

15. A protective lid (104) as claimed in any one of claims 12 to 14, characterized in that a second stopper cavity (11c) is provided on the first lid (1) and the deceleration member (4) is installed in the second stopper cavity (11c).

16. The protective lid (104) according to claim 15, characterized in that the first lid (1) comprises a base (11) and a second cover (13), the base (11) being provided with a second groove (11k), the second cover (13) being removably connected to the base (11) and covering the second groove (11k) to form the second stopper cavity (11c).

17. The protective lid (104) according to any one of claims 12 to 16, characterized in that the deceleration member (4) includes a damper (41).

18. The protective lid (104) according to any one of claims 1 to 17, characterized in that the free end of the second lid (2) and the first lid (1) are connected by an engagement structure (6) or a magnetic attraction structure (7).

19. The protective lid (104) according to any one of claims 1 to 18, characterized in that the first lid (1) has a stopper portion (16), and the stopper portion (16) contacts the second lid (2) to limit the maximum opening angle of the second lid (2).

20. 20. The protective lid (104) according to claim 19, characterized in that the stopper portion (16) limits the maximum opening angle of the second lid (2) to 190°.

21. Protective lid (104) according to any one of the preceding claims, characterized in that a gripping portion (5) is provided on the second lid (2).

22. A battery (10) comprising a battery cell (101), a frame (102), and a high-voltage draw-out member (105), the battery cell (101) being mounted on the frame (102), the high-voltage draw-out member (105) being mounted on the frame (102) and electrically connected to the battery cell (101), and the battery (10) further comprising a protective lid (104) according to any one of claims 1 to 21.

23. The battery (10) of claim 22, characterized in that the battery (10) includes an outer casing (107), the outer casing (107) includes a housing lid (108), the frame (102) is installed within the outer casing (107), an avoidance groove (109) is provided on an inner wall of the housing lid (108), and the avoidance groove (109) avoids the second lid (2) to prevent the second lid (2) from interfering with the housing lid (108) during rotation.

24. 24. An electrical power consuming device (100) comprising a battery (10) according to claim 22 or 23, said battery (10) being for providing electrical energy.

25. A method for manufacturing a protective cover (104) according to any one of claims 1 to 21, comprising the steps of: providing a first lid (1), the first lid (1) being for being fixed on a frame (102) of a battery (10), a receiving cavity (14) being provided on the first lid (1), the receiving cavity (14) being for receiving a high-pressure extraction member (105), the receiving cavity (14) having an opening (15), the opening (15) being for exposing the high-pressure extraction member (105); providing a second lid (2) that is rotatably mounted on the first lid (1) and that opens and closes the opening (15) when rotated in a first rotation direction and a second rotation direction relative to the first lid (1), respectively; providing a lid-closing mechanism (3), the lid-closing mechanism (3) being connected to the first lid (1) and the second lid (2), and rotating the second lid (2) in the second rotation direction after the second lid (2) is opened and an external force for opening the second lid (2) is removed; the closing mechanism (3) includes an elastic member (3a), the elastic member (3a) is connected to the first lid (1) and the second lid (2), and after an external force for opening the second lid (2) is removed, an elastic restoring force of the elastic member (3a) drives the second lid (2) to rotate in the second rotation direction; A first stopper cavity (11b) is provided on the first lid (1), and the spring (31) is installed in the first stopper cavity (11b); A method for manufacturing a protective lid (104), characterized in that the first lid (1) includes a base (11) and a first cover (12), a first groove (11g) is provided on the base (11), and the first cover (12) is removably connected to the base (11) and covers the first groove (11g) to form the first stopper cavity (11b).

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