CN119108656A - Battery static tooling - Google Patents
Battery static tooling Download PDFInfo
- Publication number
- CN119108656A CN119108656A CN202411588364.6A CN202411588364A CN119108656A CN 119108656 A CN119108656 A CN 119108656A CN 202411588364 A CN202411588364 A CN 202411588364A CN 119108656 A CN119108656 A CN 119108656A
- Authority
- CN
- China
- Prior art keywords
- battery
- structural member
- mounting hole
- shell
- battery mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003068 static effect Effects 0.000 title 1
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 56
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 26
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- 229910052742 iron Inorganic materials 0.000 abstract description 13
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 238000007747 plating Methods 0.000 abstract description 7
- 238000001556 precipitation Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract 2
- 229910001416 lithium ion Inorganic materials 0.000 abstract 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 235000013980 iron oxide Nutrition 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of new energy batteries, and discloses a battery standing tool, wherein one end of a battery can be inserted into a battery mounting hole for standing after liquid injection of the battery, and the lithium potential of a structural member can be reduced after the structural member is contacted with a battery shell due to lower lithium potential of the structural member, so that the oxidation precipitation of iron in a damaged part of a plating layer of the battery shell is inhibited, and the corrosion phenomenon of the battery shell is obviously reduced. The battery standing tool comprises a cover body, wherein at least one battery mounting hole is formed in the cover body, one end of a battery is inserted into the battery mounting hole, a structural member is arranged on the inner wall of the battery mounting hole and is suitable for being abutted to the outer wall of a shell of the battery, the lithium-ion potential of the structural member is smaller than that of the shell of the battery, the lithium-ion potential of the structural member is T, the surface area of the structural member is S, the T/S range is 0<T/S less than or equal to 2.9, and the unit of T/S is V/cm 2.
Description
Technical Field
The invention relates to the technical field of new energy batteries, in particular to a battery standing tool.
Background
With the continuous development of new energy technology, a new energy battery is used as an environment-friendly energy storage and release device, and is widely applied to energy storage power supply systems of hydraulic power, firepower, wind power, solar power stations and the like, and numerous technical fields of electric tools, electric bicycles, electric motorcycles, electric automobiles, military equipment, aerospace and the like.
The prior cylindrical battery case is usually made of nickel-plated stainless steel, and the case is used as a battery cathode. When the battery is sealed and welded, a shell plating layer can be damaged, iron-containing stainless steel is exposed, after the battery is filled with liquid, the lithium potential of a negative electrode is larger than the oxidation potential of iron, the iron at the stainless steel position where the plating layer is damaged is easily oxidized, the negative electrode is reduced in the charging and discharging process of the battery, iron and iron oxides can be deposited at the position of a shell current collecting disc, part of iron and iron oxides can also exist between battery pole pieces, the battery is scattered in self-discharge, the problem of abnormal self-discharge occurs, and the battery performance is affected.
Disclosure of Invention
In view of the above, the invention provides a battery standing tool to solve the problems of abnormal self-discharge and influence on battery performance caused by easy corrosion after the existing battery shell plating layer is damaged.
In a first aspect, the invention provides a battery standing tool, which comprises a cover body, wherein at least one battery mounting hole is formed in the cover body, the battery mounting hole is suitable for inserting one end of a battery, a structural member is arranged on the inner wall of the battery mounting hole and is suitable for abutting against the outer wall of a shell of the battery, the opposite lithium potential of the structural member is smaller than that of the shell of the battery, the opposite lithium potential of the structural member is T, the surface area of the structural member is S, the T/S range is up to 0<T/S and is less than or equal to 2.9, and the unit of T/S is V/cm 2.
The battery standing tool has the beneficial effects that after the battery is filled with the liquid, one end of the battery can be inserted into the battery mounting hole to stand, the structural member is continuously abutted against the outer wall of the battery shell, and as the lithium potential of the structural member is smaller than that of the battery shell, an equipotential body is formed after the structural member is contacted with the battery shell, the lithium potential of the battery shell (negative electrode) can be reduced, so that the oxidation precipitation of iron on the damaged part of the coating of the battery shell is inhibited, the occurrence of corrosion phenomenon of the battery shell is obviously reduced, the problem of abnormal self-discharge of the battery is solved, and the battery performance is improved. In addition, through the limitation of the structural member to the ratio range of the lithium potential T to the surface area S of the structural member, namely 0<T/S is less than or equal to 2.9, when the structural member adopts a metal material with lower lithium potential, the structural member meeting the ratio range can quickly pull down the lithium potential of the battery shell, so that the surface area of the structural member can be smaller, namely the contact area of the structural member and the battery shell can be smaller, so as to save the cost, and when the structural member adopts a metal material with higher lithium potential, the surface area of the structural member is required to be larger, namely the contact area of the structural member and the battery shell is required to be larger, so that the lithium potential of the battery shell is quickly pulled down. The structural member meeting the ratio range can effectively and rapidly reduce the lithium potential of the battery shell and obviously reduce the occurrence of corrosion phenomenon of the battery shell.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall exploded schematic view of a battery rest fixture of the present invention;
FIG. 2 is a schematic view of a cover in the battery standing tool of the present invention;
Fig. 3 is a cross-sectional view of the battery stationary fixture of the invention with the cover body and the battery engaged.
Reference numerals illustrate:
1. Cover body, 101, battery mounting hole, 2, battery, 3, structure, 4, tray.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of the battery standing tool according to the present invention is described below with reference to fig. 1, 2 and 3.
According to the embodiment of the invention, on one hand, the battery standing tool comprises a cover body 1, wherein at least one battery mounting hole 101 is formed in the cover body 1, the battery mounting hole 101 is suitable for inserting one end of a battery 2, a structural member 3 is arranged on the inner wall of the battery mounting hole 101 and is suitable for being abutted against the outer wall of a shell of the battery 2, the opposite lithium potential of the structural member 3 is smaller than that of the shell of the battery 2, the opposite lithium potential of the structural member 3 is T, the surface area of the structural member 3 is S, the T/S range is up to 0<T/S and is less than or equal to 2.9, and the unit of T/S is V/cm 2.
According to the battery standing tool, after the battery 2 is filled with liquid, one end of the battery 2 can be inserted into the battery mounting hole 101 for standing, the structural member 3 is continuously abutted against the outer wall of the battery 2 shell, and as the lithium potential of the structural member 3 is smaller than that of the battery 2 shell, an equipotential body is formed after the structural member 3 contacts with the battery 2 shell, the lithium potential of the battery 2 shell (negative electrode) can be reduced, so that the iron of the damaged part of the coating of the battery 2 shell is inhibited from being oxidized and separated out, the occurrence of the corrosion phenomenon of the battery 2 shell is obviously reduced, the problem of abnormal self-discharge of the battery is solved, and the battery performance is improved. In addition, through the limitation of the ratio range of the lithium potential T of the structural member 3 to the surface area S of the structural member 3, namely 0<T/S is less than or equal to 2.9, when the structural member 3 adopts a metal material with a lower lithium potential, the structural member 3 meeting the ratio range can quickly lower the lithium potential of the battery 2 shell, so that the surface area of the structural member 3 can be smaller, namely the contact area of the structural member 3 and the battery 2 shell can be smaller, so as to save cost, and when the structural member 3 adopts a metal material with a higher lithium potential, the surface area of the structural member 3 is required to be larger, namely the contact area of the structural member 3 and the battery 2 shell is required to be larger, so that the lithium potential of the battery 2 shell is quickly lowered. The structural member 3 meeting the ratio range can effectively and rapidly reduce the lithium potential of the battery 2 shell and obviously reduce the corrosion phenomenon of the battery 2 shell.
The battery standing tool of the embodiment is used for standing the battery after the battery is injected once and before formation. The battery standing tool has the effects of reducing the lithium potential of a battery shell (negative electrode) so as to reduce or avoid the oxidation precipitation of iron at the damaged part of a battery shell coating, remarkably reduce the occurrence of corrosion phenomenon of the battery shell and solve the problem of abnormal self-discharge of the battery.
In this embodiment, the counter lithium potential refers to the potential of the working electrode obtained by taking lithium metal as a reference electrode in the battery test.
The size of the cover body 1 is matched with the number of the batteries 2 to be stood, at least one battery mounting hole 101 is formed in the cover body 1, and the number of the battery mounting holes 101 is equal to or larger than the number of the batteries 2 to be stood. The number of the battery mounting holes 101 may be one or two or more.
In the present embodiment, twenty-five battery mounting holes 101 are provided on the side of the cover 1 facing the battery 2, and five rows of battery mounting holes 101 are provided in total for each five battery mounting holes 101. Therefore, the battery rest fixture of the present embodiment is suitable for simultaneously rest 25 batteries 2 at most.
The battery mounting hole 101 is suitable for inserting one end of the battery 2, for example, the positive end of the battery 2 can be inserted into the battery mounting hole 101, and the negative end of the battery 2 can also be inserted into the battery mounting hole 101, so long as the structural member 3 is ensured to continuously abut against the outer wall of the housing of the battery 2. The positive electrode end of the battery 2 means an end provided with a positive electrode of the battery, and the negative electrode end of the battery 2 means an end opposite to the positive electrode end.
The structure 3 is disposed on the inner wall of the battery mounting hole 101, and when one end of the battery 2 is inserted into the battery mounting hole 101, the structure 3 can abut against the outer wall of the casing of the battery 2, so as to reduce the lithium potential of the negative electrode of the battery. The lithium potential of the structural member 3 is smaller than that of the shell of the battery 2, after the structural member 3 contacts the shell outer wall of the battery 2, the shell outer wall of the battery 2 is a battery cathode, and the structural member 3 can pull down the lithium potential of the battery cathode to inhibit iron of the damaged part of the battery shell plating layer from being oxidized and separated out, so that the corrosion phenomenon of the battery shell is reduced.
The structural member 3 with the ratio range of the lithium potential T to the surface area S of the structural member 3 is limited, namely 0<T/S is less than or equal to 2.9, and the structural member 3 with the ratio range can effectively and rapidly reduce the lithium potential of the shell of the battery 2 and obviously reduce the corrosion phenomenon of the shell of the battery 2.
For example, the ratio T/S of the lithium potential T of the structural member 3 to the surface area S of the structural member 3 may be 0.1, 0.5, 1, 1.3, 1.7, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, etc.
Further, the lithium potential 0<T of the structural member 3 is less than or equal to 2.9V. For example, the lithium-pair potential of the structural member 3 may be 2.9V, 2.2V, 2V, 1.5V, 1.1V, 0.8V, 0.4V, etc.
Alternatively, the structural member 3 has an oxidation potential for lithium equal to or less than that of iron to enhance the effect of suppressing the oxidation precipitation of iron in the damaged portion of the battery case plating layer.
Further, the surface area S of the structural member 3 ranges from 1cm 2≤S≤144.5cm2.
The inner wall of battery mounting hole 101 is provided with structure 3, and structure 3 is used for the casing outer wall of butt battery 2, and the inner space of battery mounting hole 101 is limited, if structure 3 'S surface area S is too big, then structure 3 can occupy too much setting space, influences the setting of battery 2, if structure 3' S surface area S is too little, then is unfavorable for drawing down the lithium potential of battery 2 casing fast.
For example, the surface area S of the structural member 3 may be 1cm2、6 cm2、15 cm2、23 cm2、36 cm2、42 cm2、58 cm2、67 cm2、74 cm2、85 cm2、96 cm2、103 cm2、122 cm2、137 cm2、144.5 cm2 or the like.
The battery mounting hole 101 is a blind hole, the height of the structural member 3 along the depth direction of the battery mounting hole 101 is H, the depth of the battery mounting hole 101 is d, the ratio of H to d is 0.9-H/d-1, for example, the ratio of H to d can be 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, 1, etc. In the above ratio range, the height of the structural member 3 is not greater than the depth of the battery mounting hole 101, and the structural member 3 does not exceed the battery mounting hole 101, so as to avoid scratch of the battery case. Meanwhile, in the ratio range, the structural member 3 is not too small, so that the contact between the structural member 3 and the outer wall of the battery shell is affected, and the effect of the negative electrode on lithium potential is reduced. The structural member 3 with the ratio has larger contact area with the shell of the battery 2, so that the structural member 3 is fully contacted with the outer wall of the shell of the battery 2, and the lithium potential of the battery cathode is effectively reduced.
Further, the structural member 3 has a thickness I in the radial direction of the battery mounting hole 101 in a range of 1 mm.ltoreq.I.ltoreq.2 mm.
Along the radial direction of the battery mounting hole 101, the thickness of the structural member 3 is I, the thickness I of the structural member 3 is in the range of 1mm less than or equal to I less than or equal to 2mm, and because if the thickness of the structural member 3 is too thick, the shell of the battery 2 is pressed into the shell of the battery 2 to damage the shell of the battery 2, and if the thickness of the structural member 3 is too thin, the structural member 3 cannot reliably contact with the shell of the battery 2 to influence the effect of reducing the lithium potential of the battery shell. The structural member 3 with the thickness in the range can not damage the shell of the battery 2, and can reliably contact with the shell of the battery 2 so as to ensure the effect of reducing the lithium potential of the battery cathode.
For example, the thickness I of the structural member 3 in the radial direction of the battery mounting hole 101 may be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, etc.
Further, the structural member 3 has an arc-shaped structure arranged along the circumferential direction of the battery mounting hole 101, the arc length of the structural member 3 is L, the circumference of the battery mounting hole 101 is c, and the ratio of L to c is in the range of 0.07-L/c-1.
Since the battery mounting hole 101 is a circular hole, the circumference of the inner wall thereof is c, and the ratio of the arc length L of the structural member 3 to the circumference c of the inner wall of the battery mounting hole 101 is 0.07.ltoreq.L/c.ltoreq.1. If the above ratio is too small, it is easy to cause that the structural member 3 is not in reliable and effective contact with the outer wall of the casing of the battery 2, which affects the effect of reducing the lithium potential of the battery negative electrode, while if the above ratio is too large, the requirement on the processing precision of the structural member 3 is high, which increases the manufacturing difficulty and the manufacturing cost. The structural member 3 in the ratio range can be fully attached to and contacted with the outer wall of the shell of the battery 2, so that the contact surface is ensured to be large enough, the battery 2 can be protected, and the manufacturing cost is reduced.
For example, the ratio of L to c may be 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, etc.
Further, the arc length of the structural member 3 is in the range of 10 mm.ltoreq.L.ltoreq.144 mm.
Because the battery mounting hole 101 is a circular hole, the inner wall of the battery mounting hole is of an arc-shaped structure, and in order to reliably set the structural member 3, the structural member 3 is of an arc-shaped structure matched with the inner wall of the battery mounting hole 101 as a whole. The arc length of the structural member 3 is L, and the range of the arc length L is more than or equal to 10mm and less than or equal to 144mm. The range of the arc length L ensures that the structural member 3 can reliably contact with the outer wall of the shell of the battery 2, and the contact surface is large enough to ensure the effect of reducing the lithium potential of the battery cathode.
For example, the arc length L of the structure 3 may be 10mm, 21mm, 33mm, 46mm, 52mm, 68mm, 72mm, 88mm, 96mm, 105mm, 113mm, 126mm, 139mm, 144mm, etc.
Further, the structural member 3 is chamfered along the depth direction of the battery mounting hole 101 and at a side close to the open end of the battery mounting hole 101.
That is, the angle between the end surface of the structural member 3 facing the battery 2 and the side surface of the structural member 3 abutting the battery 2 forms a chamfer. In the present embodiment, the positive electrode terminal of the battery 2 is inserted into the battery mounting hole 101, that is, the cover 1 is integrally provided above the battery 2. Because the cover body 1 is covered and arranged at the upper end (positive electrode end) of the battery 2, the included angle between the lower end surface of the structural member 3 and the side surface of the structural member 3, which is abutted against the outer wall of the battery shell, forms a chamfer angle. In the process of inserting the battery mounting hole 101 into one end of the battery 2, the chamfer can protect the battery 2, so that the shell of the battery 2 cannot be scratched, and the quality of a battery product is prevented from being influenced.
Further, the inner wall of the battery mounting hole 101 includes a side wall and a bottom wall, the structural member 3 is L-shaped, and the structural member 3 is attached to the side wall and the bottom wall of the battery mounting hole 101.
The battery mounting hole 101 is the blind hole, and the inner wall of battery mounting hole 101 includes lateral wall and diapire, and structure 3 wholly is L type structure, and when structure 3 set up battery mounting hole 101, structure 3 wholly laminate in the inner wall of battery mounting hole 101, and structure 3 is attached in lateral wall and diapire of battery mounting hole 101 promptly to dodge the mounting path of battery 2, be favorable to reducing the space occupation of structure 3 in battery mounting hole 101 simultaneously.
Further, the structural members 3 are provided in plurality, and the adjacent structural members 3 are uniformly spaced.
The number of the structural members 3 can be one or two or more, and the rate and effect of reducing the lithium potential of the battery cathode can be improved by increasing the number of the structural members 3. Optionally, the adjacent structural members 3 are uniformly arranged at intervals, so that the effect of reducing the lithium potential of the battery negative electrode can be improved, the stress on the periphery of the battery 2 can be uniform, the battery 2 is integrally arranged in the middle, and the structural reliability and stability can be improved.
Further, the structural members 3 are provided in an even number, and the structural members 3 are provided in a pair of opposite directions. The even number of structural members 3 are arranged in pairs, so that the uniformity of the stress of the battery 2 can be further improved, the structural reliability is improved, and meanwhile, the rate and the effect of reducing the lithium potential of the battery negative electrode are further improved.
In the present embodiment, two structural members 3 are provided, and the two structural members 3 are disposed opposite to each other.
In this embodiment, the structural member 3 is made of aluminum. The material is easy to obtain, has lower cost and is beneficial to reducing the manufacturing cost of the whole tool device.
Further, the battery mounting hole 101 is circular in cross section perpendicular to the depth direction thereof.
In the present embodiment, the battery 2 is a cylindrical battery, and therefore the cross section of the battery mounting hole 101 perpendicular to the depth direction thereof is circular, i.e., the cross section of the battery mounting hole 101 perpendicular to the axial direction thereof is circular, so as to accommodate the rest of the cylindrical battery. The inner diameter of the battery mounting hole 101 is larger than the outer diameter of the case of the battery 2 so that the battery 2 can be smoothly inserted into the battery mounting hole 101.
Further, the battery standing tool further comprises a tray 4, the tray 4 is suitable for accommodating at least one battery 2, and the cover body 1 is matched with the open end of the tray 4.
As shown in fig. 1, the tray 4 has a depth, the depth of the tray 4 being matched to the axial height of the batteries 2, and the size of the tray 4 being also matched to the number of batteries 2 to be rested. In this embodiment, the tray 4 has a square-like structure, and the cover 1 has a square cover. The tray 4 has an open end arranged upwards, at which the cover 1 is adapted to be placed in a covering manner. The battery 2 is adapted to be placed vertically in the tray 4.
Alternatively, a battery placement position corresponding to the position of each battery mounting hole 101 on the cover 1 may be preset at the bottom of the tray 4, so that an operator can quickly place the battery 2 to be placed in the tray 4 and can cover the cover 1 in a matched manner.
The battery standing process of the battery standing tool according to the embodiment is described below with reference to the accompanying drawings:
after the battery 2 is injected once and before formation, the battery 2 needs to be placed in the battery standing tool of the embodiment for standing, so as to reduce the lithium potential of the battery cathode and improve the corrosion condition of the battery shell.
Firstly, each battery 2 to be stood is placed in a tray 4, then a cover body 1 is covered, each battery mounting hole 101 corresponds to one battery 2, the positive electrode end of each battery 2 is inserted into each battery mounting hole 101, after the positive electrode end of each battery 2 is inserted into each battery mounting hole 101, a structural member 3 is abutted against the outer wall of a shell of each battery 2, and as the lithium potential of the structural member 3 is lower than the lithium potential of the negative electrode of each battery, after the structural member 3 is contacted with the outer wall of the shell of each battery 2, the structural member 3 and the outer wall of the shell of each battery 2 become an equipotential body, so that the lithium potential of the negative electrode of each battery is reduced. To ensure the effect, the above-mentioned standing process lasts at least 24 hours.
When the battery starts to be formed and charged, the lithium potential of the positive electrode of the battery is increased, the lithium potential of the negative electrode of the battery is reduced, and the problem of corrosion and oxidation of the shell can be avoided, and at the moment, the battery 2 can be taken out from the battery standing tool of the embodiment, so that the standing process is completed.
Through the standing process, the lithium potential of the battery cathode can be reduced before the battery is formed, the oxidation precipitation of iron at the damaged part of the battery shell plating layer can be effectively inhibited, the corrosion phenomenon of the battery shell is obviously reduced, the battery performance is ensured, and the product quality is improved.
In other embodiments, to avoid direct contact between the battery mounting hole 101 and the battery positive electrode, a battery positive electrode accommodating hole may be formed at the bottom of the hole of the battery mounting hole 101 away from the end face of the battery 2 in a direction away from the battery 2, where the battery mounting hole 101 is adapted for insertion of the positive electrode end of the battery 2, and the positive electrode of the battery 2 is inserted into the battery positive electrode accommodating hole. Because the positive electrode end of the battery 2 is provided with the positive electrode, and the positive electrode protrudes from the positive electrode end, the battery positive electrode accommodating hole is formed at the hole bottom of the battery mounting hole 101 far away from the end face of the battery 2 in the direction far away from the battery 2, that is, the hole bottom of the battery mounting hole 101 is upwards formed to form the battery positive electrode accommodating hole, and when the positive electrode end of the battery 2 is inserted into the battery mounting hole 101, the positive electrode of the battery 2 is placed in the battery positive electrode accommodating hole to protect the positive electrode of the battery.
And, the inside diameter size of the battery positive electrode accommodation hole should be greater than the outside diameter size of the positive electrode of the battery 2, and after the positive electrode of the battery 2 is placed in the battery positive electrode accommodation hole, the positive electrode of the battery 2 is not contacted with the inner wall of the battery positive electrode accommodation hole. Alternatively, the bottom of the battery positive electrode receiving hole is not in contact with the top of the battery positive electrode. At this time, the inner diameter of the battery mounting hole 101 is larger than the inner diameter of the battery positive electrode accommodation hole, and the battery mounting hole 101 and the battery positive electrode accommodation hole form a stepped hole structure to match the shape of the positive electrode end of the battery 2.
In other embodiments, the negative terminal of the battery 2 may be inserted into the battery mounting hole 101, and the position of the cover 1 and the tray may be exchanged, so long as the structural member 3 can reliably contact the outer wall of the housing of the battery 2.
Of course, in other embodiments, the tray 4 may further be provided with a battery accommodating hole, and the inner wall of the battery accommodating hole is provided with the structural member 3, where the structural member 3 can be abutted to the outer wall of the casing of the battery 2, so that the lithium potential of the battery cathode can be further reduced, and the effect of reducing the corrosion of the battery casing is improved.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (15)
1. The battery standing tool is characterized by comprising a cover body (1), wherein at least one battery mounting hole (101) is formed in the cover body (1), one end of a battery (2) is inserted into the battery mounting hole (101), a structural member (3) is arranged on the inner wall of the battery mounting hole (101), the structural member (3) is suitable for being abutted to the outer wall of a shell of the battery (2), the lithium potential of the structural member (3) is smaller than the lithium potential of the shell of the battery (2), the lithium potential of the structural member (3) is T, the surface area of the structural member (3) is S, the T/S range is not more than 0<T/S and is not more than 2.9, and the unit of T/S is V/cm 2.
2. The battery standing tool according to claim 1, wherein the lithium potential 0<T of the structural member (3) is less than or equal to 2.9V.
3. The battery rest fixture according to claim 1, characterized in that the surface area S of the structural member (3) ranges from 1cm 2≤S≤144.5cm2.
4. The battery rest fixture according to claim 1, wherein the housing of the battery (2) is a negative electrode.
5. The battery standing tool according to claim 1, wherein the height of the structural member (3) in the depth direction of the battery mounting hole (101) is H, the depth of the battery mounting hole (101) is d, and the ratio of H to d is in the range of 0.9-1.
6. The battery standing tool according to claim 1, wherein the thickness of the structural member (3) along the radial direction of the battery mounting hole (101) is I, and the range of the thickness I is 1mm less than or equal to I less than or equal to 2mm.
7. The battery standing tool according to claim 1, wherein the structural member (3) is an arc-shaped structure circumferentially arranged along the battery mounting hole (101), the arc length of the structural member (3) is L, the circumference of the battery mounting hole (101) is c, and the ratio range of L to c is 0.07-1.
8. The battery standing tool according to claim 7, wherein the arc length L of the structural member (3) is in the range of 10mm < L < 144mm.
9. The battery rest fixture according to claim 1, wherein the structural member (3) is chamfered along the depth direction of the battery mounting hole (101) and at a side close to the open end of the battery mounting hole (101).
10. The battery standing tool according to claim 1, wherein the inner wall of the battery mounting hole (101) comprises a side wall and a bottom wall, the structural member (3) is L-shaped, and the structural member (3) is attached to the side wall and the bottom wall of the battery mounting hole (101).
11. The battery standing tool according to claim 1, wherein a plurality of structural members (3) are provided, and the structural members (3) are arranged at uniform intervals.
12. The battery standing tool according to claim 1, wherein an even number of structural members (3) are provided, and the structural members (3) are arranged in pairs.
13. The battery rest fixture according to claim 1, wherein the cross section of the battery mounting hole (101) perpendicular to the depth direction thereof is circular.
14. The battery standing tool according to claim 1, wherein the structural member (3) is made of aluminum.
15. The battery rest fixture according to any of claims 1-14, further comprising a tray (4), said tray (4) being adapted to accommodate at least one of said batteries (2), said cover (1) being mated with an open end of said tray (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411588364.6A CN119108656B (en) | 2024-11-08 | 2024-11-08 | Battery standing tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411588364.6A CN119108656B (en) | 2024-11-08 | 2024-11-08 | Battery standing tool |
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| CN119108656B CN119108656B (en) | 2025-02-14 |
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