Automatic liquid supplementing battery

Abstract

The utility model relates to the technical field of batteries, in particular to an automatic liquid supplementing battery which comprises a shell, a pole core, a liquid storage bag and an isolation component, the pole core, the liquid storage bag and the isolation component are arranged in the shell, and the isolation component is arranged at the bottom of the pole core in the height direction of the pole core; a notch is formed in the liquid storage bag, when the gas pressure in the shell reaches a preset value, the liquid storage bag is extruded and deformed by gas, the notch of the liquid storage bag is opened under the action of the internal pressure, the electrolyte in the liquid storage bag flows out through the notch, and when the pressure in the shell does not reach the preset value, the notch of the liquid storage bag recovers the closed state; a containing groove corresponding to the bottom of the pole core is formed in the isolation component. Therefore, liquid can be supplemented into the battery by utilizing the liquid storage bag, the use performance of the battery is ensured, and the isolation component is arranged at the bottom of the pole core, so that the liquid level of the electrolyte in the accommodating groove is reduced after the pole core completely absorbs the electrolyte, and the situation that the electrical property is reduced due to the fact that the pole core is always soaked in the electrolyte is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to an automatic liquid-supplementing battery. BACKGROUND

[0002] At present, batteries used for energy storage are often required to have long cycles by the market, have a long service life, and many factors affect the service life and cycle of the battery. However, the electrolyte is one of the key factors for the battery to have long cycles, that is, due to long-term volatilization of the electrolyte, the battery lacks electrolyte inside, and thus the service performance of the battery is affected. Therefore, there is an urgent need to develop a battery with a liquid-supplementing function. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide an automatic liquid-supplementing battery, which solves the technical problem of the urgent need to develop a battery with a liquid-supplementing function in the prior art to some extent.

[0004] The application provides an automatic liquid-supplementing battery, which comprises a shell, a pole core, a liquid storage bag and a separation member; wherein the pole core, the liquid storage bag and the separation member are all arranged in the shell, and along the height direction of the pole core, the separation member is arranged at the bottom of the pole core; the liquid storage bag is formed with a cutout, and when the gas pressure in the shell reaches a preset value, the liquid storage bag is deformed by being extruded by the gas, the cutout of the liquid storage bag is opened under the action of the internal pressure thereof, the electrolyte in the liquid storage bag flows out through the cutout, and when the pressure in the shell cannot reach the preset value, the cutout of the liquid storage bag returns to a closed state; the separation member is formed with a containing groove corresponding to the bottom of the pole core, and the electrolyte flowing out from the liquid storage bag can flow into the containing groove.

[0005] In the above technical solution, further, the liquid storage bag is arranged outside one side of the pole core extending along the height direction thereof.

[0006] In any of the above technical solutions, further, two adjacent inner side walls of the shell extending along the height direction thereof and the pole core surround a side empty cavity, and the liquid storage bag is arranged in the side empty cavity.

[0007] In any of the above technical solutions, further, the liquid storage bag comprises an arc-shaped side wall, a first flat side wall, a second flat side wall, an arc-shaped connecting wall, a top wall and a bottom wall; wherein the first flat side wall and the second flat side wall are respectively arranged on and connected to the opposite two sides of the arc-shaped side wall, and the first flat side wall and the second flat side wall are connected through the arc-shaped connecting wall.

[0008] The top wall and the bottom wall are respectively arranged and connected to the top and bottom of the arc-shaped side wall, the first flat side wall, the second flat side wall and the arc-shaped connecting wall along the height direction of the pole core; the first flat side wall and the second flat side wall abut against the corresponding two flat side walls of the shell, the arc-shaped side wall is arranged close to the side of the pole core, and the arc-shaped connecting wall is arranged corresponding to the arc-shaped side edge of the shell.

[0009] In any of the above technical solutions, further, the pole core is cuboid, the shell is matched with the shape of the pole core, and four side part empty cavities are formed between the side edges of the shell and the pole core, and the liquid storage bag is arranged in any of the side part empty cavities.

[0010] In any of the above technical solutions, further, the isolation member is formed with a first liquid guide through hole and a second liquid guide through hole extending along the height direction of the pole core, the first liquid guide through hole is arranged outside the accommodating groove, and at least part of the first liquid guide through hole is staggered with the pole core along the height direction of the pole core, and the second liquid guide through hole is arranged at the bottom of the accommodating groove.

[0011] In any of the above technical solutions, further, the first liquid guide through hole is arranged in a gradually expanding manner along the height direction of the pole core from bottom to top.

[0012] In any of the above technical solutions, further, the second liquid guide through hole is arranged in a gradually expanding manner along the height direction of the pole core from bottom to top.

[0013] In any of the above technical solutions, further, the thickness of the side wall of the liquid storage bag in contact with the pole core is less than the thickness of the remaining side wall of the liquid storage bag.

[0014] In any of the above technical solutions, further, one of the liquid storage bag and the shell is formed with a buckle part, and the other is formed with a clamping groove, and the buckle part is inserted into the clamping groove.

[0015] In any of the above technical solutions, further, the cutout is formed in the bottom wall of the liquid storage bag along the height direction of the pole core.

[0016] In any of the above technical solutions, further, the bottom of the pole core is flush with the groove opening of the accommodating groove.

[0017] In any of the above technical solutions, further, the bottom wall of the shell along the height direction thereof is formed with a groove, and the isolation member is arranged in the groove.

[0018] In any of the above technical solutions, further, the shell comprises a main shell, a cover plate assembly and a bottom plate; wherein the main shell is hollow inside and open at both ends; the cover plate assembly and the bottom plate are respectively installed at the top and bottom of the main shell along the height direction thereof.

[0019] In any of the above technical solutions, further, the material of the liquid storage bag is an insulating material.

[0020] In any of the above technical solutions, further, the cutout is in a cross shape.

[0021] Compared with the prior art, the application has the following beneficial effects:

[0022] The application provides a novel automatic liquid supplementing battery, which can supplement liquid in the battery, ensures the use performance of the battery, and the bottom of the pole core is provided with an isolation member, and a containing groove is formed in the isolation member, so that the liquid level of the electrolyte in the containing groove is lowered after the pole core absorbs the electrolyte, and the pole core will not be soaked in the electrolyte all the time, thereby preventing the electrical performance from being reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0024] Figure 1 An exploded view of the automatic liquid supplementing battery provided by the embodiment of the application;

[0025] Figure 2 A structural schematic view of the automatic liquid supplementing battery provided by the embodiment of the application after the cover plate assembly is opened;

[0026] Figure 3 Another structural schematic view of the automatic liquid supplementing battery provided by the embodiment of the application after the cover plate assembly is opened;

[0027] Figure 4 An assembly view of the shell and the pole core provided by the embodiment of the application;

[0028] Figure 5 An assembly view of the pole core and the liquid storage bag provided by the embodiment of the application;

[0029] Figure 6 A structural schematic view of the automatic liquid supplementing battery provided by the embodiment of the application;

[0030] Figure 7Another structural schematic view of the automatic liquid supplementing battery provided by the embodiment of the present application;

[0031] Figure 8 Another structural schematic view of the automatic liquid supplementing battery provided by the embodiment of the present application;

[0032] Figure 9 A structural schematic view of the isolation member provided by the embodiment of the present application;

[0033] Figure 10 Another structural schematic view of the isolation member provided by the embodiment of the present application.

[0034] Reference signs:

[0035] 1 - shell, 11 - main shell, 12 - cover plate assembly, 13 - bottom plate, 14 - groove, 2 - pole core, 3 - liquid storage bag, 31 - arc-shaped side wall, 32 - first flat side wall, 33 - second flat side wall, 34 - arc-shaped connecting wall, 35 - top wall, 36 - bottom wall, 37 - cutout, 38 - buckle part, 4 - isolation member, 41 - first liquid guide through hole, 42 - second liquid guide through hole, 43 - accommodating groove, 5 - side empty cavity. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0037] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0038] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The following refers to Figures 1 to 10 The automatic liquid supplementing battery according to some embodiments of the present application is described.

[0042] Referring to Figures 1 to 5 As shown in the drawings, the embodiments of the present application provide an automatic liquid supplementing battery, comprising: a shell 1, a pole core 2, a liquid storage bag 3 and a separation member 4; wherein the pole core 2, the liquid storage bag 3 and the separation member 4 are all arranged in the shell 1, and along the height direction of the pole core 2, the separation member 4 is arranged at the bottom of the pole core 2; the liquid storage bag 3 is formed with a cutout 37, and when the gas pressure in the shell 1 reaches a preset value, the liquid storage bag 3 is deformed by being extruded by the gas, the cutout 37 of the liquid storage bag 3 is opened under the action of the internal pressure, the electrolyte in the liquid storage bag 3 flows out through the cutout 37, and when the pressure in the shell 1 does not reach the preset value, the cutout 37 of the liquid storage bag 3 returns to the closed state; the separation member 4 is formed with an accommodating groove 43 corresponding to the bottom of the pole core 2, and the electrolyte flowing out through the liquid storage bag 3 can flow into the accommodating groove 43.

[0043] According to the above described structure, it can be known that after the battery is used for a period of time, the pole core 2 reacts with the electrolyte to generate gas, when the gas in the shell 1 reaches the preset value, the liquid storage bag 3 is deformed by being extruded, the cutout 37 of the liquid storage bag 3 is opened under the action of the pressure of the electrolyte in the liquid storage bag 3, and the electrolyte in the liquid storage bag 3 flows out through the cutout 37, and the electrolyte flowing out flows to the bottom of the separation member 4 under the action of gravity, and flows into the accommodating groove 43, so that the liquid level of the electrolyte in the accommodating groove 43 rises, so that the bottom of the pole core 2 is in contact with the electrolyte in the accommodating groove 43, the pole core 2 absorbs the electrolyte, thereby satisfying the operation of supplementing the liquid, and when the pole core 2 absorbs the electrolyte again, the electrolyte level will drop, the bottom of the pole core 2 is separated from the electrolyte, so that the pole core 2 will not be in the soaking of the electrolyte all the time, thereby causing the decline of the electrical performance, and when the pressure in the shell 1 does not reach the preset value, the liquid storage bag 3 will not be deformed, so that the cutout 37 of the liquid storage bag 3 is closed again, and the electrolyte no longer flows out, which is a repeated process.

[0044] It can be seen that the application provides a novel automatic liquid supplementing battery, which can supplement liquid in the battery and ensure the use performance of the battery. In addition, the bottom of the pole core 2 is provided with an isolation member 4, and the isolation member 4 is provided with a containing groove 43. After the pole core 2 absorbs the electrolyte, the liquid level of the electrolyte in the containing groove 43 is lowered, so that the pole core 2 will not be soaked in the electrolyte all the time, thereby preventing the decline of the electrical performance.

[0045] In this embodiment, preferably, as shown in Figure 5 the liquid storage bag 3 is arranged outside the side of the pole core 2 extending in the height direction.

[0046] According to the above-described structure, the liquid storage bag 3 is arranged on the side of the pole core 2, thereby avoiding occupying the space in the height direction, and the electrolyte flowing out of the liquid storage bag 3 can quickly flow onto the isolation member 4 below.

[0047] It should be noted that the liquid storage bag 3 is not limited to being arranged on the side of the pole core 2 extending in the height direction, but can also be arranged on other positions, for example, the liquid storage bag 3 can also be arranged above the top of the pole core 2, and the like, which can be selected according to actual needs.

[0048] In this embodiment, preferably, as shown in Figures 2 to 4 the two adjacent inner side walls of the shell 1 extending in the height direction and the pole core 2 are surrounded to form a side empty cavity 5, and the liquid storage bag 3 is arranged in the side empty cavity 5.

[0049] According to the above-described structure, the liquid storage bag 3 can be arranged in the space between the arc-shaped side edges of the pole core 2 and the corresponding arc-shaped side edges of the shell 1, that is, in the side empty cavity 5, so that the empty space at the side edges is fully utilized, the space of the pole core 2 is avoided to be occupied, and the space utilization rate is improved.

[0050] It should be noted that the mounting position of the liquid storage bag 3 is not limited to the above, but can also be arranged in other side regions, for example, the liquid storage bag 3 can also be arranged between the large face side of the pole core 2 and the corresponding large face side of the shell 1, or between the small face side of the pole core 2 and the corresponding small face side of the shell 1, which can be selected according to actual needs.

[0051] In this embodiment, preferably, as shown in Figures 6 to 8 the liquid storage bag 3 comprises an arc-shaped side wall 31, a first flat side wall 32, a second flat side wall 33, an arc-shaped connecting wall 34, a top wall 35, and a bottom wall 36; the first flat side wall 32 and the second flat side wall 33 are respectively arranged on and connected to the opposite sides of the arc-shaped side wall 31, and the first flat side wall 32 and the second flat side wall 33 are connected through the arc-shaped connecting wall 34.

[0052] Along the height direction of the pole core 2, the top wall 35 and the bottom wall 36 are respectively arranged and connected to the top and bottom of the arc-shaped side wall 31, the first flat side wall 32, the second flat side wall 33 and the arc-shaped connecting wall 34, that is, the liquid storage bag 3 is designed as a similar triangular prism structure; the first flat side wall 32 and the second flat side wall 33 are respectively arranged on the corresponding two flat side walls of the shell 1, and the arc-shaped side wall 31 is arranged close to the pole core 2, and the arc-shaped connecting wall 34 is arranged corresponding to the arc-shaped side edge of the shell 1.

[0053] According to the above structure, the first flat side wall 32 and the second flat side wall 33 can be arranged on the two opposite flat side walls of the shell 1 to stably support the liquid storage bag 3, and the arc-shaped connecting wall 34 is matched with the arc-shaped side edge of the shell 1, and the arc-shaped connecting wall 34 is matched with the arc-shaped side edge of the pole core 2 to avoid interference, so that the liquid storage bag 3 with the above structure is more matched with the side empty cavity 5, and the capacity of the liquid storage bag 3 is improved in the effective space.

[0054] It should be noted that the shape of the liquid storage bag 3 is not limited to the above, and can also be a cylindrical shape and the like, which is selected according to actual needs.

[0055] In this embodiment, preferably, as shown in Figures 2 to 4 , the pole core 2 is in a cuboid shape, the shell 1 is matched with the shape of the pole core 2, and four side empty cavities 5 are formed between the side edges of the shell 1 and the side edges of the pole core 2, and the liquid storage bag 3 is arranged in any one of the side empty cavities 5.

[0056] According to the above structure, the pole core 2 and the shell 1 are both in a cuboid shape, which meets the use requirements of the existing battery, and four side empty cavities 5 are formed between the four side edges of the pole core 2 and the four side edges of the shell 1, and the liquid storage bag 3 is arranged in the side empty cavity 5, which improves the liquid supplementing efficiency. Of course, it is not limited to this, and one, two or three side empty cavities 5 can be selected to arrange the liquid storage bag 3, and when the shape of the pole core 2 and the shell 1 changes, the number of the side empty cavities 5 will also change, and then the liquid storage bag 3 can be arranged in some of the side empty cavities 5 according to actual needs.

[0057] Further, preferably, as shown in Figure 1 , Figure 9 and Figure 10 , the isolation member 4 is also a rectangular structure matched with the shape of the shell 1, and the structure of the accommodating cavity and the accommodating groove 43 is also rectangular. Of course, it is not limited to this, and can be designed according to actual needs.

[0058] In this embodiment, preferably, as shown in Figure 6 , along the height direction of the pole core 2, the cutout 37 is formed in the bottom wall 36 of the liquid storage bag 3.

[0059] According to the above-described structure, the cutout 37 is arranged on the bottom wall 36 of the liquid storage bag 3, so that the electrolyte is more easily and quickly flowed to the bottom of the isolation member 4 under the action of gravity. Of course, the cutout 37 is not limited to being arranged on the bottom wall 36 of the liquid storage bag 3, but can also be arranged on other positions of the liquid storage bag 3, for example, the cutout 37 can be arranged on the side wall or the top of the liquid storage bag 3, or the cutout 37 is arranged on the bottom, the top and the side wall of the liquid storage bag 3, or any two or all of them, and the specific selection is based on the actual needs.

[0060] In this embodiment, preferably, as shown in Figure 9 and Figure 10 , the isolation member 4 is formed with a first liquid guide through hole 41 and a second liquid guide through hole 42 extending along the height direction of the pole core 2. The first liquid guide through hole 41 is arranged outside the accommodating groove 43, and at least part of the first liquid guide through hole 41 is staggered with the pole core 2 along the height direction of the pole core 2, so as to avoid the pole core 2 from blocking the flow of the electrolyte. The second liquid guide through hole 42 is arranged at the bottom of the accommodating groove 43.

[0061] According to the above-described structure, the electrolyte discharged from the liquid storage bag 3 can flow into the accommodating groove 43 through the first liquid guide through hole 41 and the second liquid guide through hole 42. It can be seen that the flow of the electrolyte is mainly realized by the two liquid guide holes.

[0062] It should be noted that the first liquid guide through hole 41 and the second liquid guide through hole 42 described above can not be arranged, but only the accommodating groove 43 is arranged, and the accommodating groove 43 is lengthened so that the end of the accommodating groove 43 exceeds the pole core 2, that is, is not blocked by the accommodating groove 43. In this way, the falling electrolyte can directly enter the accommodating groove 43.

[0063] In this embodiment, preferably, as shown in Figure 10 , the first liquid guide through hole 41 is arranged in a gradually expanding manner along the height direction of the pole core 2 and from bottom to top.

[0064] According to the above-described structure, the first liquid guide through hole 41 is designed in a funnel shape, so as to facilitate the electrolyte to quickly flow into the bottom of the isolation member 4, and then quickly flow into the groove 14 through the second liquid guide through hole 42. Of course, it is not limited to this, the first liquid guide through hole 41 can also be arranged in an equal-thickness structure, and the specific selection is based on the actual needs.

[0065] In this embodiment, preferably, as shown in Figure 10 , the second liquid guide through hole 42 is arranged in a gradually expanding manner along the height direction of the pole core 2 and from bottom to top.

[0066] According to the structure described above, when the electrolyte flows out of the bottom of the isolation member 4 into the accommodating groove 43, that is, when the electrolyte flows out, no large jet pressure is caused, thereby protecting the core 2 from damage. Of course, this is not limited thereto, and the second liquid guide through hole 42 can also be provided in an equal-thickness structure, which is selected according to actual needs.

[0067] In this embodiment, preferably, as shown in Figure 3 the height direction of the core 2, at least part of the structure of the first liquid guide through hole 41 is staggered with the core 2, so that the first liquid guide through hole 41 is not completely blocked by the core 2, thereby facilitating the electrolyte falling from above to fall into the first liquid guide through hole.

[0068] It should be noted that, along the height direction of the core 2, at least part of the structure of the first liquid guide through hole 41 is staggered with the core 2, which can be understood as follows: for a single first liquid guide through hole 41, along the height direction of the core 2, the projection of the first liquid guide through hole 41 can completely fall outside the projection of the core 2, or the projection of the first liquid guide through hole 41 and the projection of the core 2 are partially overlapped together, etc., which is selected according to actual needs.

[0069] In addition, it should be noted that: preferably, the number of the first liquid guide through hole 41 and the second liquid guide through hole 42 can be multiple, of course, this is not limited thereto.

[0070] In this embodiment, preferably, as shown in Figures 5 to 8 the thickness of the side wall of the liquid storage bag 3 in contact with the core 2 is less than the thickness of the remaining side wall of the liquid storage bag 3, that is, the thickness of the aforementioned arc-shaped side wall 31 is less than the thickness of the first flat side wall 32, the second flat side wall 33, the arc-shaped connecting wall 34, the top wall 35 and the bottom wall 36, so that the gas generated by the core 2 pushes the thin wall thickness of the liquid storage bag 3 close to it to deform, thereby facilitating the electrolyte in the liquid storage bag 3 to be extruded out, and the remaining side wall as a support body, the wall thickness needs to be designed relatively thick, so that the liquid storage bag 3 is more stable.

[0071] It should be noted that the wall thickness of the liquid storage bag 3 is not limited to the above, but can also be designed according to actual design, for example, it can also be designed in an equal-thickness structure, etc.

[0072] In this embodiment, preferably, as shown in Figure 6 and Figure 7 the liquid storage bag 3 is formed with a buckle portion 38, the shell 1 is formed with a clamping groove, and the buckle portion 38 is inserted into the clamping groove.

[0073] According to the structure described above, the buckle portion 38 and the clamping groove are matched, thereby fixing the liquid storage bag 3 on the side wall of the shell 1, so that the liquid storage bag 3 and the shell 1 are assembled more stably and firmly.

[0074] Further, preferably, the number of the buckle portions 38 is multiple, and the number of the clamping grooves is also multiple, and they are one-to-one corresponding, so as to ensure the stability and firmness of the assembly of the liquid storage bag 3 and the shell 1.

[0075] Further, preferably, the buckle portion 38 comprises a connecting umbrella rod portion and an umbrella cap portion, and the umbrella cap portion plays a clamping limiting role. Of course, the structure of the buckle portion 38 is not limited to this, and can be designed according to actual needs.

[0076] It should be noted that the connection structure of the liquid storage bag 3 and the shell 1 is not limited to the above structure, and other connection structures can also be used, for example, the liquid storage bag 3 and the shell 1 can also be connected by gluing, and the specific selection is based on actual needs.

[0077] In this embodiment, preferably, as shown in Figure 1 The bottom wall 36 of the shell 1 along the height direction thereof is formed with a groove 14, and the isolation member 4 is arranged in the groove 14, which plays a role of positioning the isolation member 4, so that the assembly of the isolation member 4 and the bottom wall 36 of the shell 1 is more firm and stable, and is not easy to be displaced. Of course, it is not limited to this, and the groove 14 can also not be arranged, and the isolation member 4 can be directly seated on the bottom wall 36 of the shell 1. In order to ensure the limiting, a positioning block or the like structure can be arranged on the outer periphery of the isolation member 4.

[0078] In this embodiment, preferably, as shown in Figure 1 The shell 1 comprises a main shell body 11, a cover plate assembly 12 and a bottom plate 13. The main shell body 11 is hollow and open at both ends. The cover plate assembly 12 and the bottom plate 13 are respectively arranged on the top and the bottom of the main shell body 11 along the height direction thereof, which plays a role of covering the pole core 2. Preferably, the bottom plate 13 is formed with the aforementioned groove 14 for installing the isolation member 4.

[0079] In this embodiment, preferably, the material of the liquid storage bag 3 is an insulating material, so as to avoid electrical connection with the pole core 2 and cause short circuit and the like.

[0080] Further, preferably, the material of the liquid storage bag 3 can be polypropylene, polyethylene and quartz glass and the like, and the specific selection is based on actual needs.

[0081] In this embodiment, preferably, as shown in Figure 6 The cutout 37 is in the shape of a cross, and the opening of the cross shape is large in area after being opened, which is convenient for rapid liquid discharge. Of course, the shape of the cutout 37 is not limited to this, and can be designed according to actual needs, for example, designed into a sunflower shape or other herringbone shape and the like.

[0082] Further, preferably, the area of the cutout 37 is a thin sheet structure relative to the structure of other areas of the liquid storage bag 3. Further, preferably, the number of the buckle portions 38 is multiple, and the number of the clamping grooves is also multiple, and they are one-to-one corresponding, so as to ensure the stability and firmness of the assembly of the liquid storage bag 3 and the shell 1.

[0083] In this embodiment, preferably, as shown in the drawings, the bottom of the pole core 2 is flush with the notch of the accommodating groove 43, facilitating assembly, of course, not limited thereto, but also can make the bottom of the pole core 2 part of the structure extends into the accommodating groove 43, according to the actual needs of the design. Figure 5

[0084] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.​

Claims

1. An auto-replenishing battery, characterized by, The application relates to a battery, which comprises a shell, a pole core, a liquid storage bag and a separation member; the pole core, the liquid storage bag and the separation member are arranged in the shell, and the separation member is arranged at the bottom of the pole core along the height direction of the pole core; the liquid storage bag is formed with a cutout, and when the gas pressure in the shell reaches a preset value, the liquid storage bag is deformed by being extruded by the gas, the cutout of the liquid storage bag is opened under the action of the internal pressure, the electrolyte in the liquid storage bag flows out through the cutout, and when the pressure in the shell cannot reach the preset value, the cutout of the liquid storage bag restores to a closed state; the separation member is formed with a containing groove corresponding to the bottom of the pole core, and the electrolyte flowing out of the liquid storage bag can flow into the containing groove. The liquid storage bag is arranged outside the side of the pole core extending along the height direction of the pole core.

2. The self-replenishing battery of claim 1, wherein, Two adjacent inner side walls of the shell extending along the height direction of the shell and the pole core surround a side empty cavity, and the liquid storage bag is arranged in the side empty cavity.

3. The self-replenishing battery of claim 2, wherein, The liquid storage bag comprises an arc-shaped side wall, a first flat side wall, a second flat side wall, an arc-shaped connecting wall, a top wall and a bottom wall; the first flat side wall and the second flat side wall are arranged on and connected to the opposite sides of the arc-shaped side wall respectively, and the first flat side wall and the second flat side wall are connected through the arc-shaped connecting wall.

4. The self-replenishing battery of claim 3, wherein, The top wall and the bottom wall are arranged on and connected to the top and bottom of the arc-shaped side wall, the first flat side wall, the second flat side wall and the arc-shaped connecting wall along the height direction of the pole core; the first flat side wall and the second flat side wall abut on the corresponding two flat side walls of the shell, the arc-shaped side wall is arranged close to the side of the pole core, and the arc-shaped connecting wall is arranged corresponding to the arc-shaped side edge of the shell. The pole core is in the shape of a cuboid, the shape of the shell is matched with that of the pole core, four side empty cavities are formed between the side edges of the shell and the side edges of the pole core, and the liquid storage bag is arranged in any one of the side empty cavities.

5. The self-replenishing battery of claim 3, wherein, The separation member is formed with a first liquid guide through hole and a second liquid guide through hole extending along the height direction of the pole core; the first liquid guide through hole is arranged outside the containing groove, and at least part of the first liquid guide through hole is staggered with the pole core along the height direction of the pole core; the second liquid guide through hole is arranged at the bottom of the containing groove.

6. The self-replenishing battery of claim 1, wherein, The first liquid guide through hole is arranged in a gradually expanding manner along the height direction of the pole core from bottom to top; and / or 7. The self-replenishing battery of claim 6, wherein, The second liquid guide through hole is arranged in a gradually expanding manner along the height direction of the pole core from bottom to top. The thickness of the side wall of the liquid storage bag in contact with the pole core is smaller than the thickness of the remaining side walls of the liquid storage bag.

8. The self-replenishing battery of claim 1, wherein, One of the liquid storage bag and the shell is formed with a buckle part, the other is formed with a clamping groove, and the buckle part is inserted into the clamping groove.

9. The self-replenishing battery of claim 1, wherein, The cutout is formed in the bottom wall of the liquid storage bag along the height direction of the pole core; and / or 10. The self-replenishing battery of any one of claims 1 to 9, wherein, The bottom of the pole core is flush with the groove opening of the containing groove; and / or The bottom of the pole core is flush with the groove opening of the containing groove; and / or The bottom wall of the shell along the height direction thereof is formed with a recess, and the isolation member is arranged in the recess; and / or The shell comprises a main shell, a cover plate assembly and a bottom plate; the main shell is hollow and open at both ends; the cover plate assembly and the bottom plate are respectively arranged at the top and the bottom of the main shell along the height direction thereof; and / or The material of the liquid storage bag is an insulating material; and / or The cutout is in a cross shape.

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