CN102024919B - Polymer battery low-pressure injection molding packaging method and low-pressure injection molding polymer battery - Google Patents
Polymer battery low-pressure injection molding packaging method and low-pressure injection molding polymer battery Download PDFInfo
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- CN102024919B CN102024919B CN2010105354184A CN201010535418A CN102024919B CN 102024919 B CN102024919 B CN 102024919B CN 2010105354184 A CN2010105354184 A CN 2010105354184A CN 201010535418 A CN201010535418 A CN 201010535418A CN 102024919 B CN102024919 B CN 102024919B
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- 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
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Abstract
The invention discloses a polymer battery low-pressure injection molding packaging method and a low-pressure injection molding polymer battery. The method comprises the following steps of: arranging a battery cell into a metal shell of which the inner wall is pre-coated with a layer of hot melt adhesive, wherein an adhesive injecting hole is respectively formed on at least one side surface in a length direction of the metal shell; at least forming an adhesive checking hole at one end of a plastic rear cover away from the side of the adhesive injecting hole; melting the hot melt adhesive precoated on the inner wall surface of the metal shell by using a heating device and adhering to an outer surface of the battery cell; and arranging a semi-finished battery into a low-pressure injection molding mold, and filling plastics in spaces between the battery cell and the plastic rear cover and between the battery cell and an inner wall of a bracket at least inside the meal shell in a low-pressure injection molding mode through the adhesive injecting holes. The invention has the advantages that: whether the residual space inside the metal shell is filled with the plastics during low-pressure injection molding can be checked, if primary low-pressure injection molding does not meet the filling requirement, the space also can be subjected to secondary filling, and four corners of the metal shell positioned in butt seams can be prevented from tilting.
Description
Technical field
The present invention relates to a kind of polymer battery low-pressure injection molding method for packing and low-pressure injection molding polymer battery.
Background technology
At present, the most polymers cell package adopts the ultrasonic technique of plastic shell, and its shell is all thicker, can't satisfy the requirement of present smart mobile phone high energy ratio.More and more higher along with the high energy ratio of battery is required, its requirement to shell is namely will have desired rigidity, and is thin as much as possible again, and the shared space of shell is the smaller the better.Therefore, the polymer battery that a kind of metal shell occurred now.Such as the disclosed polymer battery metal shell structure of Chinese patent literature CN201307620, it is exactly such battery.But there are two problems in this battery in actual production, and one is generally will fill with low-pressure injection molding glue in the remaining space of metal shell of this battery, otherwise the metal shell of battery is out of shape easily, and it is defective to be directed at battery appearance.In battery case, fill the mode of low-pressure injection molding glue, mostly adopt on the plastic cement bonnet of battery now and be reserved with hole for injecting glue with support, after battery dressed up semi-finished product, by low pressure injection mould the remaining space in the shell is filled with plastic cement,, in this way injection moulding, can only inject how many plastic cement by experience, whether the inside battery space is filled with, can't confirm, and if do not fill with also and can't remedy; In addition, the respectively injection moulding from front and back, the two sides of battery length direction and the gap between the battery core often all do not have to annotate upper plastic cement; The another one problem is, metal shell is the housing of using in advance the both ends open of piece of metal sheet punch forming, after sheet metal is amounted to, has abutment joint between its dual-side, and this abutment joint generally is positioned at the centre of the larger area side of shell; Because the larger area two sides of this battery and the opposite face of battery core are bonding, but, shell be in four jiaos of abutment joint, itself and support (being generally plastic stent), closing the place with plastic cement bonnet note can't be bonding, so four jiaos of often easily perks that are in abutment joint of shell affect the use of battery.
Summary of the invention
Technical problem to be solved by this invention provides a kind of can the inspection in low-pressure injection molding, the polymer battery low-pressure injection molding the method for packing whether remaining space in the metal shell is filled with.
Another object of the present invention is, fills with requirement if provide a kind of for the first time low-pressure injection molding not reach, and can also advance the polymer battery low-pressure injection molding method for packing of secondary supplement.
The 3rd purpose of the present invention provides a kind of polymer battery low-pressure injection molding method for packing that can prevent four jiaos of perks that are in abutment joint of metal shell.
The 4th purpose of the present invention provides a kind of low-pressure injection molding polymer battery of producing with said method.
Technical scheme of the present invention is a kind of polymer battery low-pressure injection molding method for packing, comprises the steps,
(1), the positive and negative electrode of battery protecting plate and battery core is welded respectively, in the battery protecting plate Stent Implantation, make the battery core semi-finished product;
(2), the battery core in the above-mentioned battery core semi-finished product is inserted by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at described plastic cement bonnet towards the periphery of a side of metal shell, the plastic cement bonnet is against on the lower ending opening of described metal shell; On at least one side of the length direction of described metal shell, respectively be provided with a hole for injecting glue with respect to the position of support and plastic cement bonnet; At least that end away from hole for injecting glue one side is provided with one for checking plastic cement whether to annotate sufficient inspection glue hole on described plastic cement bonnet;
(3), respectively the upper and lower bottom surface of described metal shell is heated to 80 degree to 130 degree with heater, the hot melt adhesive that is coated in advance on the metal shell internal face is melted, and bonding with the outer surface of battery core, make the battery semi-finished product;
(4), the battery semi-finished product are inserted in the low pressure injection mould, with the low-pressure injection molding mode by hole for injecting glue with in the metal shell, be battery core and plastic cement bonnet at least, and the remaining space between battery core and the rack inner wall fills up with plastic cement.
Preferably, on length direction and relative side side, hole for injecting glue place of described metal shell, also respectively be provided with one with respect to the position of support and plastic cement bonnet and mend the glue hole; On described plastic cement bonnet, also be provided with one away from that end of mending glue hole one side and be used for the fixedly fixing hole of plastic cement bonnet, after the injection moulding, be full of plastic cement in the fixing hole.
Preferably, described inspection glue hole is horn-like, and the osculum of loudspeaker is positioned at the inboard in inspection glue hole.
Preferably, described fixing hole is horn-like, and the osculum of loudspeaker is positioned at the inboard of fixing hole.
Preferably, on the inner bottom surface of described plastic cement bonnet, be provided with at least a mushroom projection, for the switching performance of the colloid after reinforcement plastic cement bonnet and the injection moulding.
Preferably, on the side bottom surface with abutment joint of described metal shell, with respect to the gap between support inner bottom surface and the battery core upper bottom surface, and with respect to the gap between plastic cement bonnet inner bottom surface and the battery core bottom surface, respectively be provided with the bent sheet that is provided with at least a bending in the metal shell in the both sides of abutment joint, after the injection moulding, the colloid after described bent sheet and the injection moulding links together tightly, for four opposite joint angle perks of the metal shell that prevents the abutment joint both sides.
The present invention also provides a kind of polymer battery low-pressure injection molding method for packing, comprises the steps,
(1), the positive and negative electrode of battery protecting plate and battery core is welded respectively, battery protecting plate is buckled in the support with buckle, make the battery core semi-finished product;
(2), battery core is inserted by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at described plastic cement bonnet towards the periphery of a side of metal shell, the plastic cement bonnet is against on the lower ending opening of described metal shell; On the side bottom surface with abutment joint of described metal shell, with respect to the gap between support inner bottom surface and the battery core upper bottom surface, and with respect to the gap between plastic cement bonnet inner bottom surface and the battery core bottom surface, respectively be provided with the bent sheet that is provided with at least a bending in the metal shell in the both sides of abutment joint, after the injection moulding, colloid after described bent sheet and the injection moulding links together tightly, for the opposite joint angle perk of the metal shell that prevents the abutment joint both sides;
(3), respectively the upper and lower bottom surface of described metal shell is heated to 80 degree to 130 degree with heater, the hot melt adhesive that is coated in advance on the metal shell internal face is melted, and bonding with the outer surface of battery core, make the battery semi-finished product;
(4), the battery semi-finished product are inserted in the low pressure injection mould, with the low-pressure injection molding mode by hole for injecting glue with in the metal shell, be battery core and plastic cement bonnet at least, and the space between battery core and the rack inner wall is filled up with plastic cement.
The present invention also provides a kind of polymer battery low-pressure injection molding method for packing, comprises the steps,
(1), the positive and negative electrode of battery protecting plate and battery core is welded respectively, battery protecting plate is buckled in the support with buckle, make the battery core semi-finished product;
(2), battery core is inserted by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at described plastic cement bonnet towards the periphery of a side of metal shell, the plastic cement bonnet is against on the lower ending opening of described metal shell;
(3), respectively the upper and lower bottom surface of described metal shell is heated to 80 degree to 130 degree with heater, the hot melt adhesive that is coated in advance on the metal shell internal face is melted, and bonding with the outer surface of battery core, make the battery semi-finished product;
(4), the battery semi-finished product are inserted in the low pressure injection mould, with the low-pressure injection molding mode by hole for injecting glue with in the metal shell, be battery core and plastic cement bonnet at least, and the space between battery core and the rack inner wall is filled up with plastic cement;
(5) with on the described support with respect to four jiaos of the abutment joint of described metal shell, annotate in advance four welded corner joints of the metalwork that buries and the abutment joint of described metal shell, for the opposite joint angle perk of the metal shell that prevents the abutment joint both sides.
The present invention also provides a kind of low-pressure injection molding polymer battery, comprises support, battery protecting plate, battery core, metal shell and plastic cement bonnet, and the positive and negative electrode of described battery protecting plate and battery core welds respectively, and described battery protecting plate is stuck in the support with buckle; Described battery core is arranged on by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at described plastic cement bonnet towards the periphery of a side of metal shell, the plastic cement bonnet is against on the lower ending opening of described metal shell; On at least one side of the length direction of described metal shell, respectively be provided with a hole for injecting glue with respect to the position of support and plastic cement bonnet; The upper and lower bottom surface of described metal shell is that the outer surface with hot melt adhesive and battery core bonds together; In metal shell is battery core and plastic cement bonnet at least, and plastic cement has been filled up in the space between battery core and the rack inner wall.
Preferably, on the another side of the length direction of described metal shell, also respectively be provided with one with respect to the position of support and plastic cement bonnet and mend the glue hole.
Preferably, be provided with one away from that end of hole for injecting glue one side at least on described plastic cement bonnet and be used for checking plastic cement whether to annotate sufficient inspection glue hole, inspection glue has been full of plastic cement in the hole, and described inspection glue hole is horn-like, and the osculum of loudspeaker is positioned at the inboard in inspection glue hole; Also be provided with one away from benefit glue hole that end of one side and be used for the fixedly fixing hole of plastic cement bonnet on described plastic cement bonnet, be full of plastic cement in the fixing hole, described fixing hole is horn-like, and the osculum of loudspeaker is positioned at the inboard of fixing hole.
Preferably, be provided with at least one on the inner bottom surface of described plastic cement bonnet for the mushroom projection of the switching performance of the colloid after strengthening plastic cement bonnet and injection moulding.
Preferably, on the side bottom surface with abutment joint of described metal shell, with respect to the gap between support inner bottom surface and the battery core upper bottom surface, and with respect to the gap between plastic cement bonnet inner bottom surface and the battery core bottom surface, respectively be provided with the bent sheet of four opposite joint angle perks of metal shell that is used for preventing the abutment joint both sides that is provided with at least a bending in the metal shell in the both sides of abutment joint.
The present invention has can check in low-pressure injection molding whether the remaining space in the metal shell is filled with; If low-pressure injection molding does not reach and fills with requirement for the first time, can also advance the secondary supplement advantage; The present invention adopts several different methods, is used for preventing four jiaos of perks that are in abutment joint of metal shell.
Description of drawings
Fig. 1 is the stereo decomposing structural representation of an embodiment of the present invention.
Fig. 2 is the interior wall construction schematic diagram after metal shell launches.
Fig. 3 is the structural representation after the metal shell moulding.
Fig. 4 is the sectional structure schematic diagram of fixing hole.
Fig. 5 is the structural representation of hot pressing.
Fig. 6 is the battery semi-finished product schematic diagram after the injecting glue.
Embodiment
Please in conjunction with Fig. 1 to Fig. 6, the invention provides a kind of polymer battery low-pressure injection molding method for packing, comprise the steps,
(1), the positive and negative electrode 11,12 of battery protecting plate 30 with battery core 10 welded respectively, battery protecting plate 03 is buckled in the support 40 with buckle 41, make the battery core semi-finished product, among Fig. 1, the buckle 41 in the support 40 be with battery protecting plate 30 on projection 31 mutual clampings;
(2), insert battery core 10 by the prefabricated profiled both ends open of sheet metal (in the present embodiment for aluminium flake), be coated with in advance the metal shell 20 interior (seeing Fig. 3) of the both ends open of one deck hot melt adhesive 26 on its inwall, the interior outage degree H of metal shell 21 and the thickness h of described battery core 10 are coincide, battery core insert metal shell 20 interior after, the outer wall of battery core 10 just in time closes with the inwall note of metal shell 20, the periphery towards a side of metal shell 20 at support 40 is established a coil support convex edge 42, the width of described support convex edge 42 equals the thickness (being generally 0.2mm) of metal shell 20, and support 40 is against on the upper end open 23 of described metal shell 10; Establish a circle bonnet convex edge 54 at described plastic cement bonnet 50 towards the periphery of a side of metal shell 20, plastic cement bonnet 50 is against on the lower ending opening 24 of described metal shell 20; On a side of the length direction of described metal shell 20, respectively be provided with a hole for injecting glue 21 with respect to the position of support 40 and plastic cement bonnet 50; That end away from hole for injecting glue 21 1 sides on described plastic cement bonnet 50 is provided with one for checking plastic cement whether to annotate sufficient inspection glue hole 51;
(3), respectively described metal shell 20 upper and lower bottom surfaces are heated to 80 degree to 130 degree with heater 60, the hot melt adhesive 201 that is coated in advance on metal shell 20 internal faces is melted, and bonding with the outer surface 13 of battery core 10, make the battery semi-finished product;
(4), the battery semi-finished product are inserted in the low pressure injection mould (not shown), with the low-pressure injection molding mode by hole for injecting glue 21 with in the metal shell 20, at least be battery core 10 and plastic cement bonnet 50, and the space between battery core 10 and support 40 inwalls is filled up with plastic cement, plastic body 62 under forming between battery core 10 and the plastic cement bonnet 50, forming plastic body 61 between battery core 10 and support 40 inwalls, obviously, in this method, length direction in the metal shell 20, side with hole for injecting glue 21 also is the plastic body that strip is arranged, and does not draw among the figure.
Whether detect in the inspection glue hole 51 has plastic cement to fill with, and if had would represent in the metal shell 20 plastic body close the symbol requirement, can carry out later process, label paper is finished product on the note.
If through check, the plastic cement in the inspection glue hole 51 are not filled with, and then on the another side of the available length direction that is located at described metal shell, carry out the after-teeming plastic cement with respect to the benefit glue hole 22 of the position of support and plastic cement bonnet.
Among the present invention, inspection glue hole 51 both can be used as the plastic cement state that detects, after being filled with plastic cement in the inspection glue hole 51, can also play the effect that plastic cement bonnet 50 and lower plastic body 62 are connected as a single entity, in order further to strengthen being connected of lower plastic body 62 and plastic cement bonnet 50, can also be on described plastic cement bonnet 50 be used for the fixedly fixing hole 53 of plastic cement bonnet 50 away from what that end of mending glue hole 22 1 sides was provided with, after the injection moulding, be full of plastic cement in the fixing hole 53.Inspection glue hole 51 among the present invention is consistent with the structure of fixing hole 53, be horn-like, and the osculum of loudspeaker is positioned at the inboard of plastic cement bonnet 50, like this, and after being filled with plastic cement in inspection glue hole 51 and the fixing hole 53, plastic body in inspection glue hole 51 and the fixing hole 53 is reverse frustoconic, see Fig. 4, the osculum diameter d is less than large mouthful of diameter D, like this, what be connected with lower plastic body 62 is better, can not become flexible.
In order further to strengthen being connected of lower plastic body 62 and plastic cement bonnet 50, inner bottom surface at described plastic cement bonnet 50 is provided with two mushroom projections 52, this mushroom projection 52 can be made like this, when injection moulding plastic bonnet 50, annotate first two cylindrical bumps slightly longer than design size, conveniently moving back mould, after plastic cement bonnet 50 is made, the reusable heat platen press is made mushroom projection 52 with cylindrical bump, reaches design size.
Four opposite joint angle 28 perks for the metal shell 20 that prevents abutment joint 27 both sides, on the side bottom surface with abutment joint 28 of described metal shell 20, with respect to the gap between support 40 inner bottom surfaces and battery core 10 upper bottom surfaces, and with respect to the gap between plastic cement bonnet 50 inner bottom surfaces and battery core 10 bottom surfaces, respectively be provided with a plurality of bent sheet 25 to metal shell 10 interior bendings in the both sides of abutment joint 28, this bent sheet 25 can be effectively affixed with upper plastic body 61 and lower plastic body 62.
The present invention also provides a kind of polymer battery low-pressure injection molding method for packing in addition, comprises the steps,
(1), the positive and negative electrode 11,12 of battery protecting plate 30 with battery core 10 welded respectively, battery protecting plate 03 is buckled in the support 40 with buckle 41, make the battery core semi-finished product, among Fig. 1, the buckle 41 in the support 40 be with battery protecting plate 30 on projection 31 mutual clampings;
(2), insert battery core 10 by the prefabricated profiled both ends open of sheet metal (in the present embodiment for aluminium flake), be coated with in advance on its inwall in the metal shell 20 of one deck hot melt adhesive 26, the interior outage degree H of metal shell 21 and the thickness h of described battery core 10 are coincide, battery core insert metal shell 20 interior after, the outer wall of battery core 10 just in time closes with the inwall note of metal shell 20, the periphery towards a side of metal shell 20 at support 40 is established a coil support convex edge 42, the width of described support convex edge 42 equals the thickness (being generally 0.2mm) of metal shell 20, and support 40 is against on the upper end open 23 of described metal shell 10; Establish a circle bonnet convex edge 54 at described plastic cement bonnet 50 towards the periphery of a side of metal shell 20, plastic cement bonnet 50 is against on the lower ending opening 24 of described metal shell 20; Four opposite joint angle 28 perks for the metal shell 20 that prevents abutment joint 27 both sides, on the side bottom surface with abutment joint 28 of described metal shell 20, with respect to the gap between support 40 inner bottom surfaces and battery core 10 upper bottom surfaces, and with respect to the gap between plastic cement bonnet 50 inner bottom surfaces and battery core 10 bottom surfaces, respectively be provided with a plurality of bent sheet 25 to metal shell 10 interior bendings in the both sides of abutment joint 28, this bent sheet 25 can be effectively affixed with upper plastic body 61 and lower plastic body 62;
(3), respectively described metal shell 20 upper and lower bottom surfaces are heated to 80 degree to 130 degree with heater 60, the hot melt adhesive 201 that is coated in advance on metal shell 20 internal faces is melted, and bonding with the outer surface 13 of battery core 10, make the battery semi-finished product; Shown in Fig. 5, the projection section size A of hot-press arrangement 60 is less than the lengthwise dimension B of metal shell.
(4), the battery semi-finished product are inserted in the low pressure injection mould (not shown), with the low-pressure injection molding mode by hole for injecting glue 21 with in the metal shell 20, at least be battery core 10 and plastic cement bonnet 50, and the space between battery core 10 and support 40 inwalls is filled up with plastic cement, plastic body 62 under forming between battery core 10 and the plastic cement bonnet 50, forming plastic body 61 between battery core 10 and support 40 inwalls, obviously, in this method, length direction in the metal shell 20, side with hole for injecting glue 21 also is the plastic body that strip is arranged, and does not draw among the figure.
The present invention also provides a kind of polymer battery low-pressure injection molding method for packing in addition, comprises the steps,
(1), the positive and negative electrode 11,12 of battery protecting plate 30 with battery core 10 welded respectively, battery protecting plate 03 is buckled in the support 40 with buckle 41, make the battery core semi-finished product, among Fig. 1, the buckle 41 in the support 40 be with battery protecting plate 30 on projection 31 mutual clampings;
(2), insert battery core 10 by the prefabricated profiled both ends open of sheet metal (in the present embodiment for aluminium flake), be coated with in advance on its inwall in the metal shell 20 of one deck hot melt adhesive 26, the interior outage degree H of metal shell 21 and the thickness h of described battery core 10 are coincide, battery core insert metal shell 20 interior after, the outer wall of battery core 10 just in time closes with the inwall note of metal shell 20, the periphery towards a side of metal shell 20 at support 40 is established a coil support convex edge 42, the width of described support convex edge 42 equals the thickness (being generally 0.2mm) of metal shell 20, and support 40 is against on the upper end open 23 of described metal shell 10; Establish a circle bonnet convex edge 54 at described plastic cement bonnet 50 towards the periphery of a side of metal shell 20, plastic cement bonnet 50 is against on the lower ending opening 24 of described metal shell 20; On the side bottom surface with abutment joint 28 of described metal shell 20, with respect to the gap between support 40 inner bottom surfaces and battery core 10 upper bottom surfaces, and with respect to the gap between plastic cement bonnet 50 inner bottom surfaces and battery core 10 bottom surfaces, respectively be provided with a plurality of bent sheet 25 to metal shell 10 interior bendings in the both sides of abutment joint 28, this bent sheet 25 can be effectively affixed with upper plastic body 61 and lower plastic body 62;
(3), respectively described metal shell 20 upper and lower bottom surfaces are heated to 80 degree to 130 degree with heater 60, the hot melt adhesive 201 that is coated in advance on metal shell 20 internal faces is melted, and bonding with the outer surface 13 of battery core 10, make the battery semi-finished product; Shown in Fig. 5, the projection section size A of hot-press arrangement 60 is less than the lengthwise dimension B of metal shell.
(4), the battery semi-finished product are inserted in the low pressure injection mould (not shown), with the low-pressure injection molding mode by hole for injecting glue 21 with in the metal shell 20, at least be battery core 10 and plastic cement bonnet 50, and the space between battery core 10 and support 40 inwalls is filled up with plastic cement, plastic body 62 under forming between battery core 10 and the plastic cement bonnet 50, forming plastic body 61 between battery core 10 and support 40 inwalls, obviously, in this method, length direction in the metal shell 20, side with hole for injecting glue 21 also is the plastic body that strip is arranged, and does not draw among the figure.
(5) for four opposite joint angle 28 perks of the metal shell 20 that prevents abutment joint 27 both sides, with on the described support 40 with respect to four jiao 28 of the abutment joint 27 of described metal shell 20, annotate in advance the metalwork (aluminum component that buries, the signal of drawing) with four jiao of 28 welding of the abutment joint 27 of described metal shell 20, is used for preventing the opposite joint angle perk of the metal shell 20 of abutment joint 27 both sides.
See also again Fig. 1 to Fig. 6, the present invention also provides a kind of low-pressure injection molding polymer battery, comprise support 40, battery protecting plate 30, battery core 10, metal shell 20 and plastic cement bonnet 50, described battery protecting plate 20 welds respectively with the positive and negative electrode 11,12 of battery core 10, and battery protecting plate 30 is by buckle 41 clampings of projection 31 with support 40; Described battery core 10 is arranged on by the prefabricated profiled both ends open of sheet metal, be coated with in advance on its inwall in the metal shell 20 of one deck hot melt adhesive 26, the interior outage degree H of metal shell 20 and the thickness h of described battery core 10 are coincide, the periphery towards a side of metal shell 20 at support 40 is established a coil support convex edge 42, the width of described support convex edge 42 equals the thickness of metal shell 20, and support 40 is against on the upper end open 23 of described metal shell 20; Establish a circle bonnet convex edge 54 at described plastic cement bonnet 50 towards the periphery of a side of metal shell 20, plastic cement bonnet 50 is against on the lower ending opening 24 of described metal shell 20; On at least one side of the length direction of described metal shell 20, respectively be provided with a hole for injecting glue 21 with respect to the position of support 40 and plastic cement bonnet 50; At least that end away from hole for injecting glue 21 1 sides is provided with one for checking plastic cement whether to annotate sufficient inspection glue hole 51 on described plastic cement bonnet 20; Described metal shell 20 upper and lower bottom surfaces are to bond together with the outer surface 13 of hot melt adhesive 26 with battery core 10; In metal shell 20 is battery core 10 and plastic cement bonnet 50 at least, and plastic cement 62,61 has been filled up in the space between battery core 10 and support 40 inwalls.
In the present embodiment, as can be seen from Figure 2, PUR 26 is not to be coated on all surfaces of inwall of metal shell 20, but only be coated in part with respect to battery core surface 13, in order to play good insulation effect, can be coated with first a layer insulating 202 at metal level 203 inner surfaces, be coated with again one deck hot melt adhesive 26, be coated with again the structure of a layer insulating 204 in metal level 203 outsides.So after the operation, total thickness of metal shell should less than 0.3mm, be preferably between the 0.1mm to 0.3mm of place.
On the another side of the length direction of described metal shell 20, also respectively be provided with one with respect to the position of support 40 and plastic cement bonnet 50 and mend glue hole 22; On described plastic cement bonnet 50, also be provided with one away from benefit glue hole that end of 22 1 sides and be used for the fixedly fixing hole 53 of plastic cement bonnet 50, be full of plastic cement in the fixing hole 53.
In order further to strengthen being connected of lower plastic body 62 and plastic cement bonnet 50, inner bottom surface at described plastic cement bonnet 50 is provided with two mushroom projections 52, this mushroom projection 52 can be made like this, when injection moulding plastic bonnet 50, annotate first two cylindrical bumps, conveniently to move back mould, after plastic cement bonnet 50 was made, the reusable heat platen press was made mushroom projection 52 with cylindrical bump.
Four opposite joint angle 28 perks for the metal shell 20 that prevents abutment joint 27 both sides, on the side bottom surface with abutment joint 28 of described metal shell 20, with respect to the gap between support 40 inner bottom surfaces and battery core 10 upper bottom surfaces, and with respect to the gap between plastic cement bonnet 50 inner bottom surfaces and battery core 10 bottom surfaces, respectively be provided with a plurality of bent sheet 25 to metal shell 10 interior bendings in the both sides of abutment joint 28, this bent sheet 25 can be effectively affixed with upper plastic body 61 and lower plastic body 62.
Among the present invention, the diameter in hole for injecting glue 21 and benefit glue hole 22 is preferably between between the 0.8mm to 1.5mm.
Claims (12)
1. polymer battery low-pressure injection molding method for packing is characterized in that: comprises the steps,
(1), the positive and negative electrode of battery protecting plate and battery core is welded respectively, in the battery protecting plate Stent Implantation, make the battery core semi-finished product;
(2), the battery core in the above-mentioned battery core semi-finished product is inserted by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at the plastic cement bonnet towards the periphery of a side of metal shell, described plastic cement bonnet is against on the lower ending opening of described metal shell; On at least one side of the length direction of described metal shell, respectively be provided with a hole for injecting glue with respect to the position of support and described plastic cement bonnet; At least that end away from hole for injecting glue one side is provided with one for checking plastic cement whether to annotate sufficient inspection glue hole on described plastic cement bonnet; On length direction and relative side side, hole for injecting glue place of described metal shell, also respectively be provided with one with respect to the position of support and plastic cement bonnet and mend the glue hole;
(3), respectively the upper and lower bottom surface of described metal shell is heated to 80 degree to 130 degree with heater, the hot melt adhesive that is coated in advance on the metal shell internal face is melted, and bonding with the outer surface of battery core, make the battery semi-finished product;
(4), the battery semi-finished product are inserted in the low pressure injection mould, with the low-pressure injection molding mode by hole for injecting glue with in the metal shell, be battery core and plastic cement bonnet at least, and the remaining space between battery core and the rack inner wall fills up with plastic cement.
2. a kind of polymer battery low-pressure injection molding method for packing according to claim 1, it is characterized in that: metal shell also is provided with one away from that end of mending glue hole one side and is used for the fixedly fixing hole of plastic cement bonnet on described plastic cement bonnet, after the injection moulding, be full of plastic cement in the fixing hole.
3. a kind of polymer battery low-pressure injection molding method for packing according to claim 1 and 2, it is characterized in that: described inspection glue hole is horn-like, the osculum of loudspeaker is positioned at the inboard in inspection glue hole.
4. a kind of polymer battery low-pressure injection molding method for packing according to claim 2, it is characterized in that: described fixing hole is horn-like, the osculum of loudspeaker is positioned at the inboard of fixing hole.
5. according to claim 1,2 or 4 described a kind of polymer battery low-pressure injection molding method for packing, it is characterized in that: on the inner bottom surface of described plastic cement bonnet, be provided with at least a mushroom projection, be used for strengthen the switching performance of the colloid after plastic cement bonnet and the injection moulding.
6. a kind of polymer battery low-pressure injection molding method for packing according to claim 5, it is characterized in that: on the side bottom surface with abutment joint of described metal shell, with respect to the gap between support inner bottom surface and the battery core upper bottom surface, and with respect to the gap between plastic cement bonnet inner bottom surface and the battery core bottom surface, respectively be provided with the bent sheet of at least one bending in the metal shell in the both sides of abutment joint, after the injection moulding, colloid after described bent sheet and the injection moulding links together tightly, for four opposite joint angle perks of the metal shell that prevents the abutment joint both sides.
7. polymer battery low-pressure injection molding method for packing is characterized in that: comprises the steps,
(1), the positive and negative electrode of battery protecting plate and battery core is welded respectively, battery protecting plate is buckled in the support with buckle, make the battery core semi-finished product;
(2), battery core is inserted by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at the plastic cement bonnet towards the periphery of a side of metal shell, described plastic cement bonnet is against on the lower ending opening of described metal shell; On the side bottom surface with abutment joint of described metal shell, with respect to the gap between support inner bottom surface and the battery core upper bottom surface, and with respect to the gap between described plastic cement bonnet inner bottom surface and the battery core bottom surface, respectively be provided with the bent sheet of at least one bending in the metal shell in the both sides of abutment joint, after the injection moulding, colloid after described bent sheet and the injection moulding links together tightly, for the opposite joint angle perk of the metal shell that prevents the abutment joint both sides;
(3), respectively the upper and lower bottom surface of described metal shell is heated to 80 degree to 130 degree with heater, the hot melt adhesive that is coated in advance on the metal shell internal face is melted, and bonding with the outer surface of battery core, make the battery semi-finished product;
(4), the battery semi-finished product are inserted in the low pressure injection mould, with the low-pressure injection molding mode by hole for injecting glue with in the metal shell, be battery core and plastic cement bonnet at least, and the space between battery core and the rack inner wall is filled up with plastic cement.
8. polymer battery low-pressure injection molding method for packing is characterized in that: comprises the steps,
(1), the positive and negative electrode of battery protecting plate and battery core is welded respectively, battery protecting plate is buckled in the support with buckle, make the battery core semi-finished product;
(2), battery core is inserted by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at described plastic cement bonnet towards the periphery of a side of metal shell, the plastic cement bonnet is against on the lower ending opening of described metal shell;
(3), respectively the upper and lower bottom surface of described metal shell is heated to 80 degree to 130 degree with heater, the hot melt adhesive that is coated in advance on the metal shell internal face is melted, and bonding with the outer surface of battery core, make the battery semi-finished product;
(4), the battery semi-finished product are inserted in the low pressure injection mould, with the low-pressure injection molding mode by hole for injecting glue with in the metal shell, be battery core and plastic cement bonnet at least, and the space between battery core and the rack inner wall is filled up with plastic cement;
(5) with on the described support with respect to four jiaos of the abutment joint of described metal shell, annotate in advance four welded corner joints of the metalwork that buries and the abutment joint of described metal shell, for the opposite joint angle perk of the metal shell that prevents the abutment joint both sides.
9. a low-pressure injection molding polymer battery is characterized in that, comprises support, battery protecting plate, battery core, metal shell and plastic cement bonnet, and the positive and negative electrode of described battery protecting plate and battery core welds respectively, and described battery protecting plate is stuck in the support with buckle; Described battery core is arranged on by the prefabricated profiled both ends open of sheet metal, be coated with in advance in the metal shell of one deck hot melt adhesive on its inwall, the interior outage degree of metal shell and the thickness of described battery core coincide, the periphery towards a side of metal shell at support is established a coil support convex edge, the width of described support convex edge equals the thickness of metal shell, and support is against on the upper end open of described metal shell; Establish a circle bonnet convex edge at described plastic cement bonnet towards the periphery of a side of metal shell, the plastic cement bonnet is against on the lower ending opening of described metal shell; On at least one side of the length direction of described metal shell, respectively be provided with a hole for injecting glue with respect to the position of support and plastic cement bonnet; The upper and lower bottom surface of described metal shell is that the outer surface with hot melt adhesive and battery core bonds together; In metal shell is battery core and plastic cement bonnet at least, and plastic cement has been filled up in the space between battery core and the rack inner wall; On the another side of the length direction of described metal shell, also respectively be provided with one with respect to the position of support and plastic cement bonnet and mend the glue hole; At least being provided with one away from that end of hole for injecting glue one side on described plastic cement bonnet is used for checking plastic cement whether to annotate sufficient inspection glue hole.
10. a kind of low-pressure injection molding polymer battery according to claim 9, it is characterized in that: described inspection glue hole is horn-like, the osculum of loudspeaker is positioned at the inboard in inspection glue hole; Also be provided with one away from benefit glue hole that end of one side and be used for the fixedly fixing hole of plastic cement bonnet on described plastic cement bonnet, be full of plastic cement in the fixing hole, described fixing hole is horn-like, and the osculum of loudspeaker is positioned at the inboard of fixing hole.
11. a kind of low-pressure injection molding polymer battery according to claim 10 is characterized in that: be provided with at least one on the inner bottom surface of described plastic cement bonnet for the mushroom projection of the switching performance of the colloid after strengthening plastic cement bonnet and injection moulding.
12. a kind of low-pressure injection molding polymer battery according to claim 11, it is characterized in that: on the side bottom surface with abutment joint of described metal shell, with respect to the gap between support inner bottom surface and the battery core upper bottom surface, and with respect to the gap between plastic cement bonnet inner bottom surface and the battery core bottom surface, respectively be provided with the bent sheet of four opposite joint angle perks of metal shell that is used for preventing the abutment joint both sides that is provided with at least a bending in the metal shell in the both sides of abutment joint.
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| CN117393931B (en) * | 2023-12-08 | 2024-02-27 | 珠海市嘉德电能科技有限公司 | Square metal shell of semi-finished polymer battery, battery assembly device and process |
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| WO2008141474A1 (en) * | 2007-05-17 | 2008-11-27 | Huizhou Desay Battery Co., Ltd | Method for packaging lithium cell by injecting plastic |
| CN201270274Y (en) * | 2008-06-01 | 2009-07-08 | 比亚迪股份有限公司 | Lithium ion battery |
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