BAC

Abstract

This application relates to the technical field of battery production equipment, and in particular to a tank. The tank comprises a tank body, a negative pressure assembly, and a control valve. A negative pressure assembly is installed on the tank body, the negative pressure assembly having a first and a second connected port, the first port being connected to a liquid injection port. The control valve is provided on the tank body and is connected to the second port. The control valve is configured to connect to a negative pressure source and can control the second port to connect to or disconnect from the negative pressure source.

Description

Title of the invention: BAC technical field

[0001] The present application relates to the field of battery production equipment, and in particular a container. STATE OF THE ART

[0002] In the battery production process, the battery forming process is a very important step in the battery manufacturing process, and it is also one of the key steps for ensuring battery quality. During battery formation, the various materials and components inside the battery can reach a more stable and uniform state, avoiding unnecessary safety problems. At the same time, the battery's capacity, cycle life, and performance stability can be improved.

[0003] In the prior art, before carrying out the formation process, the negative pressure assembly is connected to the battery's liquid injection port such that the confluence chamber of the negative pressure assembly is connected to the battery's containment chamber. At the same time, one end of the negative pressure assembly, configured to connect to the negative pressure source, is fitted with a plug, so that the confluence chamber and the containment chamber are relatively closed. To carry out the formation process, the plug must first be removed, and then the negative pressure assembly connected to the negative pressure source. However, during the plug insertion and removal process, impurities inevitably enter the confluence tube, leading to contamination of the battery's containment chamber.

[0004] SUMMARY

[0005] The present application relates to a container which can prevent impurities from entering the battery containment chamber via the confluence chamber.

[0006] In order to achieve the above objective, the present application relates to a container intended to transport a battery, the battery having a liquid injection port and a containment chamber connected to each other, the container comprising: a container body; a negative pressure assembly, the negative pressure assembly being installed on the tank body, the negative pressure assembly having a first orifice and a second orifice connected to each other, the first orifice being connected to the liquid injection orifice; and a control valve, the control valve being provided on the tank body and being connected to the second port, the control valve being configured to connect to a negative pressure source and configured to control the second port to connect to or disconnect from the negative pressure source.

[0007] Optionally, the first orifice comprises a plurality of first orifices, the negative pressure assembly further comprises a confluence chamber, the plurality of first orifices and second orifices are all connected to the confluence chamber.

[0008] Optionally, the control valve is provided with a first interface, a second interface and a third interface, the first interface is configured to connect the air source, the second interface is configured to connect the negative pressure source, and the third interface is connected to the second orifice; in a case where the air source is vented towards the first interface, the second interface is connected to the third interface, so that the second orifice is connected to the negative pressure source, the negative pressure source applying a suction so that the confluence chamber and the containment chamber form a negative pressure space; in a case where the air source stops venting towards the first interface, the second and third interfaces are disconnected, so that the second orifice is disconnected from the negative pressure source.

[0009] Optionally, the container further includes a transparent tube, the third interface and the second orifice being connected by the transparent tube.

[0010] Optionally, a positioning element is also provided, and the positioning element is connected to the tank body and the control valve to limit the relative position of the control valve and the tank body.

[0011] Optionally, the container body is provided with an insertion hole; the positioning element comprises a main body, a first positioning part and a second positioning part, the first positioning part and the second positioning part both being disposed on the main body, the first positioning part being configured to fit into the insertion hole, the second positioning part being configured to fit into the first interface and / or the second interface.

[0012] Optionally, the second positioning part comprises two second positioning parts, one of the second positioning parts being configured to plug into the first interface, and the other of the second positioning parts being configured to plug into the second interface.

[0013] Optionally, the two second positioning parts are spaced along the first direction; the first positioning part comprises at least two first positioning parts, the at least two first positioning parts being spaced along the first direction, and the first positioning part and the second positioning part being offset from each other in the second direction, the first direction and the second direction being perpendicular to each other.

[0014] Optionally, the first positioning part and the second positioning part extend along a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction.

[0015] Optionally, one end of the first positioning part away from the main body is provided with a first guide bevel, the first guide bevel progressively approaching the axis of the first positioning part along a direction away from the main body, and being configured to guide the insertion of the first positioning part into the insertion hole; One end of the second positioning part away from the main body is provided with a second guide bevel, the second guide bevel gradually approaching the axis of the second positioning part along a direction away from the main body, and being configured to guide the insertion of the second positioning part into the first interface and / or the second interface.

[0016] Optionally, a stop portion is provided on the outer circumferential surface of the second positioning portion, the stop portion protruding from the second positioning portion along a radial direction of the second positioning portion, and the stop portion being configured to abut against the control valve in a case where the second positioning portion is inserted into the first interface and / or the second interface.

[0017] Optionally, the negative pressure assembly includes: a confluence tube, the confluence tube being provided with a confluence chamber, and the second orifice being provided on the confluence tube; and a receiving element, the receiving element having a receiving chamber, the first orifice being provided on the receiving element and communicating with the receiving chamber, the receiving chamber being connected to the confluence tube so that the confluence chamber, the receiving chamber and the containment chamber are connected to each other.

[0018] By comparison with the prior art, the beneficial effect of the present application is based on the following:

[0019] With regard to the tank provided by this application, in a case where the control valve the second orifice to disconnect from the negative pressure source, the confluence chamber of the negative pressure assembly and the battery containment chamber form a closed space, such that external impurities cannot enter the containment chamber from the second orifice through the confluence chamber of the negative pressure assembly, in order to prevent contamination of the battery containment chamber by impurities, thereby preventing a reduction in battery performance and a shortening of battery life. Brief description of the drawings

[0020] In order to describe technical solutions in embodiments of this application more clearly, the following briefly introduces the accompanying drawings used to describe the embodiments. It is clear that the drawings included in the following descriptions represent only certain embodiments of this application, and a person skilled in the art can still deduce other drawings from these accompanying drawings without creative effort.

[0021] Fig. 1 is a side view of the tray provided by an embodiment of the present application.

[0022] Fig. 2 is a top view of the tray provided by an embodiment of the present application.

[0023] Fig. 3 is a front view of the tank provided by an embodiment of the present application.

[0024] Fig. 4 is a front view of the positioning element provided by an embodiment of the present application.

[0025] Fig. 5 is a side view of the positioning element provided by an embodiment of the present application.

[0026] Description of the main symbols of Annex 1-bac; 11-tank body; 111-insertion hole; 12-negative pressure assembly; 121-confluence chamber; 122-first orifice; 123-second orifice; 124-confluence tube; 125-receiving element; 1251-receiving chamber; 13-control valve; 131-first interface; 132-second interface; 133-third interface; 14-positioning element; 141-main body; 142-first positioning part; 143-second positioning part; 1441-first guide bevel; 1442-second guide bevel; 145-stop part; 2-battery; 21-liquid injection port; 22-containment chamber. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of this application will be clearly and fully described below in conjunction with the drawings attached to the embodiments of this application. It is understood that the embodiments described are only a part of the embodiments of this application and not all of them. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without performing creative work are within the scope of protection of this application.

[0028] In this application, the terms “install,” “arrange,” “provide,” “connect,” and “communicate” are to be understood in a broad sense. By way of example, they may refer to a fixed connection, a removable connection, or a single-piece structure; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection via an intermediate means, or an internal connection between two devices, elements, or assemblies. For the average person with expertise in the field, the specific meanings of the above terms in this application may be understood according to the specific circumstances.

[0029] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices or components (the particular types and structures may be identical or different), and are not used to indicate or imply the devices and components indicated or their relative importance and number. Unless otherwise specified, "a plurality of" means at least two.

[0030] The technical solution of the present application will be described later with reference to specific embodiments and drawings.

[0031] Refer to [Fig. 1] and [Fig. 2] together. The embodiment of this application describes a container 1 for transporting a battery 2. The battery 2 has a liquid injection port 21 and a containment chamber 22 connected to each other. The container 1 comprises a container body 11, a negative pressure assembly 12, and a control valve 13. The negative pressure assembly 12 is installed on the container body 11. The negative pressure assembly 12 has a first port 122 and a second port 123 connected to each other, the first port 122 being connected to the liquid injection port 21. The control valve 13 is provided on the container body 11 and is connected to the second port 123. The control valve 13 is configured to connect a source negative pressure (not shown in the figure) and configured to control the second port 123 so that it connects to or disconnects from the negative pressure source.

[0032] The container body 11 is provided with a restricted space, and the battery 2 is placed in the restricted space, so that the container body 11 carries the battery 2.

[0033] In a case where the control valve 13 controls the second orifice 123 to be put in communication with the negative pressure source, the negative pressure source can temporarily apply a suction, so that the air tightness of the negative pressure assembly 12 and the containment chamber 22 of the battery 2 can be tested to determine if the negative pressure assembly 12, in such a way as to prevent the containment chamber 22 of the battery 2 from being contaminated by impurities, thus making it possible to avoid reducing the performance of the battery 2 and shortening the life of the battery 2.

[0034] In a case where the control valve 13 controls the second orifice 123 to communicate with the negative pressure source, the negative pressure source can temporarily apply a suction, so that the air tightness of the negative pressure assembly 12 and the containment chamber 22 of the battery 2 can be tested to determine if the negative pressure assembly 12 and the chamber 22 are airtight.

[0035] After determining that the negative pressure assembly 12 and the containment chamber 22 of battery 2 form a sealed space, the formation process can be implemented. During this time, the negative pressure source continues to apply suction, and some of the electrolyte stored in the containment chamber 22 of battery 2 can be pumped into the negative pressure assembly 12, in order to prevent an excessive reaction caused by an excess of electrolyte during the formation process, which would degrade the performance of battery 2.At the same time, the negative pressure source continues to apply suction, and the gas generated during the formation process can also be pumped into the negative pressure assembly 12 to prevent the gas from affecting the adequacy of the formation of battery 2, and thus affecting the performance of battery 2, and at the same time, it can also prevent the pressure increase in the containment chamber 22 causing expansion of battery 2, thus leading to deterioration of battery 2 or even causing an explosion.

[0036] It should be noted that the first orifice 122 and the second orifice 123 are not on the same plane. For example, in this embodiment, the direction of the first orifice 122 and the direction of the second orifice 123 are perpendicular to each other.

[0037] Refer to [Fig.1] and [Fig.2], in some embodiments, the first orifice 122 has a plurality of first orifices 122, and the negative pressure assembly 12 also has a confluence chamber 121, the plurality of first orifices 122 and the second orifice 123 all being connected to the confluence chamber 121.

[0038] The container body 11 can carry a plurality of batteries 2, and the negative pressure assembly 12 can be provided with a plurality of first orifices 122. The number of first orifices 122 corresponds to the number of batteries 2, and each first orifice 122 is connected to a corresponding liquid injection orifice 21 of the battery 2, respectively, so as to carry out the process of forming a plurality of batteries 2 at the same time, which can improve the efficiency of battery formation 2.

[0039] In a case where the control valve 13 controls the disconnection of the second orifice 123 of the negative pressure source, the confluence chamber 121 and the containment chamber 22 of the battery 2 form a closed space, such that external impurities cannot enter the containment chamber 22 of the battery 2 through the second orifice 123 via the confluence chamber 121, so as to prevent contamination of the containment chamber 22 of the battery 2 by impurities, thus preventing a reduction in the performance of the battery 2 and a shortening of the battery 2's lifespan.

[0040] In a case where the control valve 13 controls the second orifice 123 which is to communicate with the negative pressure source, the negative pressure source can temporarily apply a suction, so that the air tightness of the confluence chamber 121 and the containment chamber 22 of the battery 2 can be tested to determine whether the confluence chamber 121 is airtight with the containment chamber 22.

[0041] After determining that the confluence chamber 121 and the containment chamber 22 of battery 2 form a sealed space, the formation process can be implemented. During this time, the negative pressure source continues to apply suction, and some of the electrolyte stored in the containment chamber 22 of battery 2 can be pumped into the confluence chamber 121 to prevent an excessive reaction caused by an excess of electrolyte during the formation process, which would degrade the performance of battery 2. Simultaneously, the negative pressure source continues to apply suction, and the gas generated during the formation process can also be pumped into the confluence chamber 121 to prevent the gas from affecting the proper formation of battery 2 and thus impacting its performance. This also prevents the formation of the gas from affecting the battery 2's performance. the increase in pressure in the containment chamber 22 causing an expansion of battery 2, thus leading to deterioration of battery 2 or even causing an explosion.

[0042] In other embodiments, there may also be only one first orifice 122.

[0043] Referring to [Fig.1] and [Fig.3] together, in certain embodiments, the control valve 13 is provided with a first interface 131, a second interface 132 and a third interface 133. The first interface 131 is configured to connect an air source (not shown in the figure), the second interface 132 is configured to connect a negative pressure source (not shown in the figure), and the third interface 133 is connected to the second port 123.In a case where the air source is vented towards the first interface 131, the second interface 132 is connected to the third interface 133, so that the second port 123 is connected to the negative pressure source, the negative pressure source applying a suction so that the confluence chamber and the containment chamber form a negative pressure space; in a case where the air source stops venting towards the first interface 131, the second interface 132 and the third interface 133 are disconnected, so that the second port 123 is disconnected from the negative pressure source.

[0044] In this embodiment, the control valve 13 is a pneumatic valve. The first interface 131 and the second interface 132 can be arranged on a lateral surface away from the confluence tube 124, and the third interface 133 can be arranged on a lateral surface facing the confluence tube 124.

[0045] In a case where the air source does not vent to the first interface 131, the second interface 132 and the third interface 133 are disconnected. As a result, the second orifice 123 is disconnected from the negative pressure source, so that the confluence chamber 121 of the negative pressure assembly 12 and the containment chamber 22 of the battery 2 form a sealed space. In a case where the air source is vented to the first interface 131, the second interface 132 is connected to the third interface 133, resulting in the second orifice 123 being connected to the negative pressure source, so that the negative pressure source can apply a suction, in order to perform an airtightness test on the hermetic space formed by the confluence chamber 121 and the containment chamber 22 of battery 2 to determine if the confluence chamber 121 is airtight with the containment chamber 22.

[0046] In other embodiments, the control valve 13 can also be a solenoid valve, i.e., the connection or disconnection of the The second interface 132 and the third interface 133 can be controlled electromagnetically. Of course, the control valve 13 can also be of other types, and the second interface 132 and the third interface 133 can be connected or disconnected in other ways, which are not limited here.

[0047] In some more particular embodiments, the tank 1 further comprises a transparent tube (not shown in the figures), the third interface 133 and the second orifice 123 being connected by the transparent tube.

[0048] The third interface 133 and the second port 123 can be connected by a transparent tube (not shown in the figures). On the one hand, the flow of the electrolyte in the battery 2 can be observed while the second interface 132 is connected to the third interface 133 and the negative pressure source applies suction, in order to determine beforehand whether the negative pressure pumping is normal or not. On the other hand, the transparent tube is generally made from a flexible material, and thus the ends of the transparent tube are flexible when installed on the third interface 133 and the second port 123, i.e., able to compensate for an installation error between the third interface 133 and the second port 123, so as not to impact the connection between the third interface 133 and the second port 123.

[0049] In some more specific embodiments, the third interface 133 and the second orifice 123 can also be connected via the transparent tube.

[0050] Refer to [Fig.4], in some more specific embodiments, the tray 1 further includes a positioning element 14, the positioning element 14 being connected to the tray body 11 and to the control valve 13 to limit the relative position of the control valve 13 and the tray body 11.

[0051] It is understood that when the control valve 13 is mounted on the tank body 11, due to installation errors, etc., the control valve 13 may move relative to the tank body 11. Therefore, after calibration of the position of the tank body 11 relative to the negative pressure source and the air source, the position of the control valve 13 relative to the negative pressure source and the air source will move, resulting in a misalignment between the first interface 131 and the air source and the second interface 132 and the negative pressure source.To solve this problem, in this embodiment, the positioning element 14 is used to calibrate the relative position of the control valve 13 and the tank body 11, so that after calibration of the relative position of the tank body 11 and the negative pressure source and the air source, displacement of the position of the control valve 13 with respect to the negative pressure source and the air source can be prevented. In this way, misalignment between the... The first interface 131 and the air source and the second interface 132 and the negative pressure source can be avoided.

[0052] In other more specific embodiments, the positioning element 14 can also be provided on the control valve 13 and configured to connect the negative pressure source and the air source to directly calibrate the relative position of the control valve 13 and the negative pressure source and the air source.

[0053] Referring to [Fig.3], [Fig.4] and [Fig.5] together, in some embodiments, the container body 11 is provided with an insertion hole 111. The positioning element 14 comprises a main body 141, a first positioning part 142 and a second positioning part 143, the first positioning part 142 and the second positioning part 143 both being provided on the main body 141, the first positioning part 142 being configured to fit into the insertion hole 111, the second positioning part 143 being configured to fit into the first interface 131 and / or the second interface 132.

[0054] Here, the main body 141 can be a plate-shaped structure or other types of structures, which are not limited here.

[0055] For example, the first positioning part 142 is inserted into the insertion port 111, and the second positioning part 143 is inserted into the first interface 131. As the first positioning part 142 and the second positioning part 143 are arranged in relatively fixed positions on the main body 141, the relative position of the tank body 11 and the control valve 13 can be calibrated.

[0056] For example, the first positioning part 142 is inserted into the insertion port 111, and the second positioning part 143 is inserted into the second interface 132. As the first positioning part 142 and the second positioning part 143 are arranged in relatively fixed positions on the main body 141, the relative position of the tank body 11 and the control valve 13 can be calibrated.

[0057] For example, the first positioning part 142 is inserted into the insertion orifice 111, and the second positioning part 143 is inserted into the first interface 131 and the second interface 132 at the same time, which makes it possible to increase the strength of the connection between the positioning element 14 and the control valve 13, so as to reduce the difficulty of calibrating the relative positions of the tank body 11 and the control valve 13.

[0058] It should be noted that, in this embodiment, the second positioning part 143 is plugged into the first interface 131 and / or the second interface 132 of removable. Specifically, before the formation process is carried out, i.e., before the first interface 131 is connected to the air source and the second interface 132 to the negative pressure source, the first positioning part 142 is inserted into the insertion port 111, and the second positioning part 143 is inserted into the first interface 131 and / or the second interface 132 to adjust the relative position of the control valve 13 and the container body 11. After adjusting the relative position of the control valve 13 and the container body 11, the second positioning part 143 is separated from the first interface 131 and / or the second interface 132, then the first interface 131 is connected to the air source and the second interface 132 is connected to the negative pressure source.The second positioning part 143 is inserted into the first interface 131 and / or the second interface 132 in a removable manner; the relative positions between the first interface 131, the second interface 132 and the container body 11 can be set directly, thus reducing the impact of processing errors.

[0059] In other embodiments, the container body 11 may be provided with a plug hole for the insertion of the second positioning part 143.

[0060] Refer to [Fig.4] again. In some more specific embodiments, there are two second positioning parts 143, one second positioning part 143 being configured to plug into the first interface 131 and the other second positioning part 143 being configured to plug into the second interface 132.

[0061] For example, the first positioning part 142 is inserted into the insertion orifice 111, one of the second positioning parts 143 is inserted into the first interface 131, the other of the second positioning parts 143 is inserted into the second interface 132, which makes it possible to improve the strength of the connection between the positioning element 14 and the control valve 13, so as to reduce the difficulty of calibrating the relative positions of the tank body 11 and the control valve 13.

[0062] In other particular embodiments, there may be only a first positioning part 142, and the first positioning part 142 is plugged into the first interface 131 or the second interface 132.

[0063] Referring to [Fig. 4], in some more specific embodiments, the two second positioning parts 143 are spaced along the first direction (direction X in [Fig. 4]). There are at least two first positioning parts 142, at least two first positioning parts 142 are spaced along the first direction, and the first positioning part 142 and the second positioning part 143 are offset. one with respect to the other in the second direction (the Y direction on the [Fig.4]), the first direction and the second direction being perpendicular to each other.

[0064] In this embodiment, the first direction is parallel to the width direction of the container body 11, and the second direction is parallel to the height direction of the container body 11.

[0065] It is understood that, the two second positioning parts 143 are spaced along the first direction, at least two first positioning parts 142 are spaced along the first direction, so that the strength of the connection along the first direction between the positioning element 14 and the container body 11 as well as between the positioning element 14 and the control valve 13 can be improved, so that the effect of the positioning element 14 on the calibration of the container body 11 and the control valve 13 in the first direction is improved.

[0066] Similarly, the two second positioning parts 143 and at least two first positioning parts 142 are spaced along the first direction, so that the strength of the connection along the second direction between the positioning element 14 and the container body 11 as well as between the positioning element 14 and the control valve 13 can be improved, so that the effect of the positioning element 14 on the calibration of the container body 11 and the control valve 13 in the second direction is improved.

[0067] In addition, each first positioning part 142 and each second positioning part 143 are offset from each other in the second direction, which improves the stability of the positioning element 14 inserted in the tank body 11 and the control valve 13, and at the same time improves the calibration accuracy.

[0068] In other more specific embodiments, an acute angle may be formed between the first direction and the second direction.

[0069] Refer to [Fig.5], in some more specific embodiments, the first positioning part 142 and the second positioning part 143 both extend along the third direction (the Z direction on [Fig.5]), the third direction being perpendicular to the first direction and perpendicular to the second direction.

[0070] In this embodiment, the third direction is parallel to the longitudinal direction of the body 11 of the container.

[0071] The first positioning part 142 and the second positioning part 143 extend in the third direction, which can reduce the difficulty of inserting the first positioning part 142 into the insertion hole 111 as well as the insertion of the second positioning part 143 into the first interface 131 and / or the second interface 132.

[0072] In other more specific embodiments, the third direction is inclined with respect to the first and second directions.

[0073] Refer to [Fig.5]. In some more specific embodiments, one end of the first positioning part 142 away from the main body 141 is provided with a first guide bevel 1441, the first guide bevel 1441 gradually approaching the axis of the first positioning part 142 along a direction away from the main body 141, and being configured to guide the first positioning part 142 so that it fits into the insertion hole 111; one end of the second positioning part 143 away from the main body is provided with a second guide bevel 1442, the second guide bevel 1422 gradually approaching the axis of the second positioning part 143 along a direction away from the main body 141, and being configured to guide the second positioning part 143 so that it fits into the first interface 131 and / or the second interface 132.

[0074] Here, the radial dimension of the first positioning part 142 must correspond to the dimension of the insertion hole 111 to ensure that after the first positioning part 142 is inserted into the insertion hole 111, no gap is created between the first positioning part 142 and the insertion hole 111. In particular, the radial dimension of the first positioning part 142 is equal to or greater than the dimension of the insertion hole 111, so that a transition fit or a tight fit is formed between the first positioning part 142 and the insertion hole 111.Similarly, the radial dimension of the second positioning part 143 must correspond to the dimension of the first interface 131 and the second interface 132 to ensure that, after the second positioning part 143 is inserted into the first interface 131 and the second interface 132, there is no gap between the two positioning parts 143 and the first interface 131, nor between the second positioning part 143 and the second interface 132. Only in the absence of a gap between the first positioning part 142 and the insertion hole 111, and in the absence of a gap between the second positioning part 143 and the first interface 131, as well as between the second positioning part 143 and the second interface 132, can it be ensured that the positioning element 14 calibrates the relative position between the tank body 11 and the valve. Order 13.

[0075] It is understood that, since the radial dimension of the first positioning part 142 corresponds to the dimension of the insertion hole 111, when the first positioning part 142 is inserted into the insertion hole 111, it It is necessary to ensure that the central axis of the first positioning part 142 is aligned with the dimension of the insertion hole 111. When the central axis of the insertion hole 111 is substantially identical to the central axis of the first positioning part 142, the first positioning part 142 can be aligned with the insertion hole 111 and inserted without difficulty. If the first positioning part 142 is displaced relative to the insertion hole 111, an end of the first positioning part 142 that is far from the main body 141 will interfere with the edge of the insertion hole 111, thus preventing successful insertion.To solve this problem, one end of the first positioning part 142 away from the main body 141 is provided with a first guide bevel 1441, so that the radial dimension of the first positioning part 142 at the level of the first guide bevel 1441 increases progressively from the end of the first positioning part 142 away from the main body 141 towards the main body 141 along the axial direction of the first positioning part 142. Even if the first positioning part 142 moves relative to the insertion hole 111, when the first positioning part 142 is inserted into the insertion hole 111, the first guide bevel 1441 comes to rest against the edge of the insertion hole 111 to guide the insertion of the first positioning part 142 into the insertion hole 111.In this way, the first positioning part 142 can be inserted more effectively into the insertion hole 111.

[0076] Similarly, the end of the second positioning part 143 away from the main body 141 is provided with a second guide bevel 1442 to serve as a guide when the second positioning part 143 is inserted into the first interface 131 and / or the second interface 132, thus improving the insertion efficiency of the second positioning part 143 into the first interface 131 and the second interface 132, which will not be described again here.

[0077] In other more specific embodiments, guide bevels may also be provided at the insertion orifice 111, the first interface 131 and the second interface 132.

[0078] Refer to [Fig.5], in some more specific embodiments, a stop portion 145 is provided on the outer circumferential surface of the second positioning portion 143, the stop portion 145 projecting from the second positioning portion 143 along a radial direction of the second positioning portion 143, and the stop portion 145 being configured to abut against the control valve 13 in a case where the second positioning portion 143 is inserted into the first interface 131 and / or the second interface 132.

[0079] When the second positioning part 143 is inserted into the first interface 131 and / or the second interface 132, the stop portion 145 of the second positioning part 143 comes to rest against the control valve 13, which can limit the length of the second positioning part 143 inserted into the first interface 131 and / or the second interface 132. It is possible to prevent the length of the second positioning part 143 inserted into the first interface 131 and / or the second interface 132 from being too long or too short, and thus the adjustment by the positioning element 14 of the relative position of the container body 11 and the control valve 13 would not be affected.

[0080] In other more specific embodiments, the stop part 145 can be arranged on the internal walls of the first interface 131 and the second interface 132.

[0081] Refer to [Fig. 1] again. In some embodiments, the negative pressure assembly 12 comprises a confluence tube 124 and a receiving element 125. The confluence tube is provided with a confluence chamber 121, and the second orifice 123 is provided on the confluence tube 124. The receiving element 125 has a receiving chamber 1251, the first orifice 122 is provided on the receiving element 125 and communicates with the receiving chamber 1251, the receiving element 125 is connected to the confluence tube 124 so that the confluence chamber 121, the receiving chamber 1251 and the containment chamber 22 are connected.

[0082] In this embodiment, when the formation process is carried out and the negative pressure source applies a suction, part of the electrolyte in the containment chamber 22 of the battery 2 is pumped into the receiving chamber 1251 for the purpose of temporary storage to prevent an excess of electrolyte during the formation process from causing an excessive reaction, thus resulting in a decrease in the performance of the battery 2; at the end of the formation process, the electrolyte in the receiving chamber 1251 returns to the containment chamber 22 of the battery 2.

[0083] In other embodiments, the second orifice 123 can be arranged on the confluence tube 124.

[0084] Finally, it should be noted that the above embodiments are used only to illustrate the technical solutions of the present application, and not to limit them; although the application has been described in detail with reference to the above embodiments, a person with ordinary expertise in the art should understand that it is still possible to make modifications to the technical solutions listed in the above embodiments, or to make equivalent replacements for some or all of these technical features. techniques in these embodiments; and these modifications or replacements do not exclude the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of this application.

Claims

Demands

1. Container (1), configured to carry a battery (2), the battery (2) having a liquid injection port (21) and a containment chamber (22) connected to each other, the container (1) comprising: a container body (11); a negative pressure assembly (12), the negative pressure assembly (12) being installed on the container body (11), the negative pressure assembly (12) having a first port (122) and a second port (123) connected to each other, the first port (122) being connected to the liquid injection port (21); and a control valve (13), the control valve (13) being provided on the tank body (11) and being connected to the second port (123), the control valve (13) being configured to connect to a negative pressure source and configured to control the second port (123) to connect to or disconnect from the negative pressure source.

2. A tank (1) according to claim 1, wherein the first orifice (122) comprises a plurality of first orifices, the negative pressure assembly (12) further comprises a confluence chamber (121), the plurality of first orifices and the second orifice (123) are connected to the confluence chamber (121).

3. A tank (1) according to claim 2, wherein the control valve (13) is provided with a first interface (131), a second interface (132) and a third interface (133), the first interface (131) being configured to connect to an air source, the second interface (132) being configured to connect to the negative pressure source, and the third interface (133) being connected to the second orifice (123); in a case where the air source is in communication with the first interface (131), the second interface (132) is connected to the third interface (133), so that the second orifice (123) is connected to the negative pressure source, the negative pressure source applying a suction so that the confluence chamber (121) and the containment chamber (22) form a negative pressure space;in a case where the air source is not in communication with the first interface (131), the second interface (132) and the third interface (133) are disconnected, from; so that the second orifice (123) is disconnected from the negative pressure source.

4. A tank (1) according to claim 3, further comprising a positioning element (14), and the positioning element (14) being connected to the tank body (11) and to the control valve (13) to limit the relative position of the control valve (13) and the tank body (11).

5. A container (1) according to claim 4, wherein the container body (11) is provided with an insertion hole (111); the positioning element (14) comprises a main body (141), a first positioning part (142) and a second positioning part (143), the first positioning part (142) and the second positioning part (143) both being disposed on the main body (141), the first positioning part (142) being configured to fit into the insertion hole (111), the second positioning part (143) being configured to fit into the first interface (131) and / or the second interface (132).

6. Tray (1) according to claim 5, wherein the second positioning part (143) comprises two second positioning parts (143), wherein one of the second positioning parts (143) is configured to fit into the first interface (131), and the other of the second positioning parts (143) is configured to fit into the second interface (132).

7. Tray (1) according to claim 6, wherein the two second positioning parts (143) are spaced along a first direction; the first positioning part (142) comprises at least two first positioning parts (142), the at least two first positioning parts (142) being spaced along the first direction, and the first positioning part (142) and the second positioning part (143) being offset from each other in a second direction, the first direction and the second direction being perpendicular to each other.

8. A tray (1) according to any one of claims 5 to 7, wherein one end of the first positioning portion (142) away from the main body (141) is provided with a first guiding bevel (1441), the first guiding bevel (1441) progressively approaching the axis of the first positioning portion (142) along a direction away from the main body (141), and being configured to guide the insertion of the first positioning part (142) into the insertion hole (111); one end of the second positioning part (143) away from the main body (141) is provided with a second guide bevel (1442), the second guide bevel (1442) gradually approaching the axis of the second positioning part (143) along a direction away from the main body (141), and being configured to guide the insertion of the second positioning part (143) into the first interface (131) and / or the second interface (132).

9. A container (1) according to any one of claims 5 to 7, wherein a stop portion (145) is provided on the outer circumferential surface of the second positioning portion (143), the stop portion (145) projecting from the second positioning portion (143) along a radial direction of the second positioning portion (143), and the stop portion (145) being configured to abut against the control valve (13) in a case where the second positioning portion (143) is inserted into the first interface (131) and / or the second interface (132).

10. A tank (1) according to any one of claims 2 to 7, wherein the negative pressure assembly (12) comprises: a confluence tube (124), the confluence tube (124) being provided with the confluence chamber (121), and the second orifice (123) being provided on the confluence tube (124); and a receiving element (125), the receiving element (125) having a receiving chamber (1251), the first orifice (122) being provided on the receiving element (125) and communicating with the receiving chamber (1251), the receiving chamber (1251) being connected to the confluence tube (124) such that the confluence chamber (121), the receiving chamber (1251) and the containment chamber (22) are connected to each other.

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