CN204966565U - Battery and battery compartment of electric motor car - Google Patents
Battery and battery compartment of electric motor car Download PDFInfo
- Publication number
- CN204966565U CN204966565U CN201520761851.8U CN201520761851U CN204966565U CN 204966565 U CN204966565 U CN 204966565U CN 201520761851 U CN201520761851 U CN 201520761851U CN 204966565 U CN204966565 U CN 204966565U
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- tenon
- battery
- nest
- battery compartment
- mechanical
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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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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The utility model discloses a battery and battery compartment of electric motor car, battery compartment are located the electric motor car, and the battery is installed in the battery compartment, and the battery passes through tenon and the cooperation of tenon nest with the battery compartment, and the battery has the tenon with one of them of battery compartment, and wherein another has the tenon nest, and tenon nest and locking are arranged in to the tenon, and the battery is locked in the battery compartment. The utility model discloses a convenient locking and unblock can be realized to the battery and the battery compartment of electric motor car, and it is convenient to change, connects reliably during the locking, can satisfy filling of electric motor car and trade electric demand.
Description
Technical field
The utility model relates to electric automobiles, more particularly, relates to battery and the battery compartment of electric motor car.
Background technology
No matter for conventional internal combustion rolling stock or electric motor car, flying power, the driving course namely filled it up with one case oil or completely fill once electricity is all the key index that user pays close attention to.Current gasoline car is filled it up with one case oil and can be travelled 350 ~ 500km and obtain and generally admit, and therefore for electric motor car, user also wishes to possess similar driving course index naturally, namely fills once electricity, at least can travel 350km at full capacity.Sail the drive efficiency of 5km according to 1 degree of electrical travelling, battery of electric vehicle needs to hold 70 ~ 100 degree of electricity.For the battery of 70 ~ 100 degree of capacitances, if adopt the pattern of trickle charge, within such as 7 hours, be full of, so effectively charge power will reach 10kW.Traditional residential quarter electrical network and power division cannot meet such trickle charge charge power demand.And shorter for the time, more powerful fills soon, and the grid power filling power demand then residential quarter soon of such as more than 50kW cannot meet more.
In addition, if for the pattern of joining a charging pile in residential quarter according to every chassis, so each charging pile just discontinuous operation, a lot of time is all in idle condition, and this can cause the obvious wasting of resources.And the high power charging device of dispersion also can cause very large negative effect to electromagnetic environment, if but be only equipped with a few charging pile in a residential quarter, electric motor car can cause again the social concern of charging pile contention for resources after popularizing.To consider in city that most parking stalls is open-air parking position, occasion is installed charging pile and is carried out charging operations in the open, wind, Exposure to Sunlight, drenches with rain, and all can cause security risk.
In a word, ask power grid construction, Electrical Safety etc. is proposed very high requirement by the charging problems of electric motor car.Above-mentioned factor all will become the bottleneck problem of restriction electric motor car popularization and application.
Utility model content
The utility model is intended to propose a kind of simple operation, connects the structure of reliable battery and battery compartment.
According to an embodiment of the present utility model, a kind of battery and battery compartment of electric motor car are proposed, battery compartment is positioned at electric motor car, battery is installed in battery compartment, battery is coordinated with tenon nest by tenon with battery compartment, and one of them of battery and battery compartment has tenon, and wherein another has tenon nest, tenon is placed in tenon nest and locks, and battery is locked in battery compartment.
In one embodiment, battery has tenon, battery compartment has tenon nest.
Battery has the holding tank holding tenon, tenon is connected to drive motors and worm screw, and drive motors and worm screw drive tenon to stretch out or retraction holding tank.Tenon has groove, tenon nest has ledge structure, ledge structure embeds in groove and makes tenon and the locking of tenon nest.
In one embodiment, battery has mechanical tenon, electrode tenon and the tenon that communicates, battery compartment has mechanical tenon nest, electrode tenon nest and the tenon nest that communicates.Machinery tenon is placed in mechanical tenon nest.Electrode tenon is placed in electrode tenon nest and forms electric path.Communication tenon is placed in communication tenon nest and forms communication path.
In one embodiment, battery has mechanical tenon, battery compartment has mechanical tenon nest, mechanical tenon is placed in mechanical tenon nest.Battery has electric energy transceiver, battery compartment has electric energy transceiver, electric energy transceiver and electric energy transceiver form wireless electric path.Battery and battery compartment have signal transceiver, and signal transceiver forms wireless communication path.
In one embodiment, battery has tenon nest, battery compartment has tenon.
Battery compartment has the holding tank holding tenon, tenon is connected to drive motors and worm screw, and drive motors and worm screw drive tenon to stretch out or retraction holding tank.Tenon has groove, tenon nest has ledge structure, ledge structure embeds in groove and makes tenon and the locking of tenon nest.
In one embodiment, battery compartment has mechanical tenon, electrode tenon and the tenon that communicates, battery has mechanical tenon nest, electrode tenon nest and the tenon nest that communicates.Machinery tenon is placed in mechanical tenon nest.Electrode tenon is placed in electrode tenon nest and forms electric path.Communication tenon is placed in communication tenon nest and forms communication path.
In one embodiment, battery compartment has mechanical tenon, battery has mechanical tenon nest, mechanical tenon is placed in mechanical tenon nest.Battery has electric energy transceiver, battery compartment has electric energy transceiver, electric energy transceiver and electric energy transceiver form wireless electric path.Battery and battery compartment have signal transceiver, and signal transceiver forms wireless communication path.
In one embodiment, the size of battery and battery compartment is standardized, and battery and battery compartment are used for the electric motor car of different model, but battery and battery compartment are of a size of a series of standard size, and battery compartment is of a size of the integral multiple of battery size.The consistent size of battery and battery compartment in different automobile types.
The battery of electric motor car of the present utility model and battery compartment can realize locking easily and unlocking, and it is convenient to change, and connect reliable, can meet filling of electric motor car and change electric demand during locking.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 discloses the structural representation of the battery of electric motor car according to an embodiment of the present utility model and the connection of battery compartment and lock mode.
Fig. 2 discloses the structural representation according to the battery of the electric motor car of another embodiment of the present utility model and the connection of battery compartment and lock mode.
Fig. 3 discloses the structural representation of the battery of electric motor car according to another embodiment of the present utility model and the connection of battery compartment and lock mode.
Fig. 4 discloses and enters line-locked schematic diagram according to the battery of the electric motor car of an embodiment of the present utility model and battery compartment.
Embodiment
Solve filling of the electric motor car that can popularize and change electric problem, the more effective mode of one is: arrange charging station with certain density, charging station can by special line powering to alleviate the impact for electrical network.Charging station continuous operation, charges to battery continuously.And the battery of electric motor car is removable form, when the battery electric quantity of electric motor car is finished, electric motor car goes to charging station to change battery.Solve the problem of charging station service efficiency, safe operation of electric network and battery altering convenience thus.In order to provide the different flying power requirements meeting electric motor car, the battery compartment of no-go gage lattice can be equipped with in electric motor car, meet different flying power requirements in the mode of multiple battery combination.Accordingly, electric motor car also possess to carry out charging between multiple battery, switch, charging etc. function.If battery is designed to often replacing, so to battery handling and the convenience changed, higher requirement will be proposed.
Fig. 1 discloses the structural representation of the battery of electric motor car according to the first embodiment of the present utility model and the connection of battery compartment and lock mode.As shown in Figure 1, battery carries out being connected and locking with the mode of battery compartment by tenon and tenon nest.Battery 101 stretches out several tenon.In the illustrated embodiment in which, the kind of tenon is divided into three kinds: for mechanical connection and locking, play the mechanical tenon of fixation, comprise illustrated mechanical tenon 111,113,115 and 117.Play the electrode tenon of electric action, comprise illustrated electrode tenon 121 and 123.Play the communication tenon of communication role, comprise illustrated communication tenon 131.Accordingly, battery compartment 102 has several tenon nest for holding tenon.In the illustrated embodiment in which, the kind of tenon nest is equally also divided into three kinds: for holding the mechanical tenon nest of mechanical tenon, comprise illustrated mechanical tenon nest 112,114,116 and 118, and each mechanical tenon nest holds a corresponding mechanical tenon.For the electrode tenon nest of hold electrodes tenon, electrode tenon nest plays the effect of socket.In the drawings, two electrode tenon nests 122 and 124 are respectively used to hold electrodes tenon 121 and 123.Wherein, electrode tenon 121 and electrode tenon nest 122 are positive poles, and electrode tenon 123 and electrode tenon nest 124 are negative poles.For holding the communication tenon nest of communication tenon, communication tenon nest plays the effect of communication interface.In the drawings, communication tenon nest 132, for holding communication tenon 131, forms communication path.In the embodiment shown in fig. 1, electrode tenon and electrode tenon nest form electric path in a contact fashion, and communication tenon also forms communication path in a contact fashion with the tenon nest that communicates.Therefore, electrode tenon also serves certain mechanical fixation with electrode tenon nest, the tenon that communicates with the tenon nest that communicates.When battery small volume, lighter in weight, independent mechanical tenon and mechanical tenon nest can not be used, but be played conduction simultaneously by electrode tenon/tenon nest, communication tenon/tenon nest, communicated and the function of mechanical support and locking.Certainly, the tenon and the tenon nest that play the function of mechanical support and locking can carry larger weight, can have a certain impact for its connection reliability, if for the application scenario that reliability requirement that is electric or communication path is higher, or can consider to configure independent mechanical tenon/tenon nest, and not adopt the mode of integrated functionality.In addition, if the volume of battery is comparatively large, heavier-weight, then need the tenon of greater number/tenon nest to support, and at this moment generally all can consider to arrange independent mechanical tenon/tenon nest.
Fig. 2 discloses the structural representation of the battery of electric motor car according to the second embodiment of the present utility model and the connection of battery compartment and lock mode.In a second embodiment shown in figure 2, the foundation of electric path and communication path have employed the mode of wireless connections.As shown in Figure 2, compared with the first embodiment shown in Fig. 1, only there is in the second embodiment mechanical tenon and tenon nest.In the embodiment shown in Figure 2, battery 101 remains mechanical tenon 111,113,115 and 117, battery compartment 102 also remains mechanical tenon nest 112,114,116 and 118, each mechanical tenon nest holds a corresponding mechanical tenon.In a second embodiment, use wireless electric energy R-T unit to set up electric path, instead of electrode tenon/tenon nest.Battery 101 is equipped electric energy transceiver 141, battery compartment 102 is equipped electric energy transceiver 142, setting up electric path by electric energy transceiver 142 and electric energy transceiver 141 is that battery charges.Electric energy transceiver 141 on battery 101 and the electric energy transceiver on battery compartment 102 can be configured to send electric energy or receive electric energy as required.Usually one of them is configured to send electric energy, another is configured to receive electric energy.In a second embodiment, use wireless transceiver communication device to set up communication path, instead of communication tenon/tenon nest.Battery 101 and battery compartment 102 are equipped signal transceiver 151 and 152 respectively, to set up communication path.
Fig. 3 discloses according to the battery of electric motor car of the 3rd embodiment of the present utility model and the structural representation of the connection of battery compartment and lock mode.The one distortion of the first embodiment shown in Fig. 1 can be thought in the 3rd embodiment shown in Fig. 3.In the embodiment shown in fig. 3, the position of tenon and tenon nest there occurs change, and battery compartment has tenon, and on battery, have tenon nest.As shown in Figure 3, battery compartment 202 stretches out several tenon.Similar with the first embodiment shown in Fig. 1, the kind of tenon is divided into three kinds: the mechanical tenon playing fixation, comprises illustrated mechanical tenon 211,213,215 and 217.Play the electrode tenon of electric action, comprise illustrated electrode tenon 221 and 223.Play the communication tenon of communication role, comprise illustrated communication tenon 231.Accordingly, battery 201 has several tenon nest for holding tenon.In the illustrated embodiment in which, the kind of tenon nest is equally also divided into three kinds: for holding the mechanical tenon nest of mechanical tenon, comprise illustrated mechanical tenon nest 212,214,216 and 218, and each mechanical tenon nest holds a corresponding mechanical tenon.For the electrode tenon nest of hold electrodes tenon, electrode tenon nest plays the effect of socket.In the drawings, two electrode tenon nests 222 and 224 are respectively used to hold electrodes tenon 221 and 223.Wherein, electrode tenon 221 and electrode tenon nest 222 are positive poles, and electrode tenon 223 and electrode tenon nest 224 are negative poles.For holding the communication tenon nest of communication tenon, communication tenon nest plays the effect of communication interface.In the drawings, communication tenon nest 232, for holding communication tenon 231, forms communication path.In the embodiment shown in fig. 3, electrode tenon and electrode tenon nest form electric path in a contact fashion, and communication tenon also forms communication path in a contact fashion with the tenon nest that communicates.Therefore, electrode tenon also serves certain mechanical fixation with electrode tenon nest, the tenon that communicates with the tenon nest that communicates.Similar with aforesaid first embodiment, when battery small volume, lighter in weight, independent mechanical tenon and mechanical tenon nest can not be used, but played conduction simultaneously by electrode tenon/tenon nest, communication tenon/tenon nest, communicated and the function of mechanical support and locking.Comparatively large at battery volume, heavier-weight, or when requiring higher for the safety and stability connected, can consider to configure independent mechanical tenon/tenon nest, and not adopt the mode of integrated functionality.
Although not diagram, but the utility model also can provide corresponding with the second embodiment shown in Fig. 2, the foundation of electric path and communication path adopts the mode of wireless connections, battery compartment has mechanical tenon, and on battery, has the configuration of mechanical tenon nest.Battery and battery compartment can install electric energy transceiver respectively, and electric energy transceiver is set up electric path and is charged to battery.For communication path, signal transceiver can be installed on battery and battery compartment.In conjunction with the embodiment that aforesaid Fig. 1, Fig. 2, Fig. 3 introduce, those skilled in the art can realize this kind of configuration mode.
Fig. 4 discloses and enters line-locked schematic diagram according to the battery of the electric motor car of an embodiment of the present utility model and battery compartment.In the embodiment shown in fig. 4, employing be the configuration mode shown in Fig. 1 or Fig. 2, namely on battery, there is tenon, battery compartment have tenon nest.As shown in Figure 4, the position of battery 301 being installed tenon 311 has a holding tank 313.Tenon 311 can shrink and enter in holding tank 313, or stretches out from holding tank 313.Worm drive motor 315 and worm screw 317 are used to drive tenon 311 to stretch out or shrink and enter holding tank 313.Tenon 311 has a groove 319.Tenon nest 312 on battery compartment 302 has ledge structure 314.In addition, position battery compartment 302 being aimed at worm screw 317 has handle hole 316.
It is as follows that battery and battery compartment enter line-locked process: battery 310 is delivered in battery compartment 302 by battery replacement device 501, after location, worm drive motor 315 drives worm screw 317 to rotate, and makes tenon 311 stretch out from holding tank 313 and enter into tenon nest 312.Now battery 301 can be rested on suitable height by battery replacement device 501, makes the ledge structure 314 in tenon nest 312 can not stop tenon 311.After tenon 311 enters into tenon nest 312, align with ledge structure 314 in the position of groove 319.Battery replacement device 501 is withdrawn, and battery hold-down mechanism 502 applies downward power 601 to battery 301, and ledge structure 314 is embedded in the groove 319 of tenon 311, and tenon 311 is locked in tenon nest.
The process that battery and battery compartment carry out unlocking is as follows: the downward power 601 that battery hold-down mechanism 502 applies to battery 301 is cancelled, and battery replacement device 501 applies power 602 upwards to battery 301, is upwards lifted by battery 301.Ledge structure 314 is spun off from the groove 319 of tenon 311, and the bottom surface of tenon 311 is higher than the end face of ledge structure 314, now ledge structure 314 can not affect the flexible of tenon 311.Drive motors 315 drives worm screw 317 to rotate, and tenon 311 is shunk and gets back in holding tank 313, battery 301 is separated with battery compartment 302.Battery replacement device 501 carries battery 301 and leaves battery compartment 302.
If drive motors 315 breaks down, worm screw 317 cannot be driven to drive tenon 311 to stretch out or retraction holding tank 313, then directly can be operated worm screw 317 by handle hole 316, direct manual operation worm screw 317, make worm screw 317 drive tenon 311 to stretch out or retraction holding tank 313.
Although the embodiment shown in Fig. 4 is so that battery to have tenon, configuration mode battery compartment with tenon nest is that example is described, but those skilled in the art can understand, for on battery compartment, there is tenon, battery has the configuration mode of tenon nest, the configuration mode shown in Fig. 4 remains applicable.Only need the position adjusting drive motors, worm screw, handle hole, ledge structure, both can realize.Such as, holding tank, drive motors, worm screw and handle hole are all positioned on battery compartment, and ledge structure is the tenon nest being arranged in battery.
In the application of reality, the size of battery and battery compartment is standardized.So-called standardization refers to formulates series of standards size (comprising from large to little several fixed dimensions, corresponding different battery capacities).Battery compartment is of a size of the integral multiple of battery size.Battery and battery compartment are for the electric motor car of different model, but the size of battery and battery compartment is always one in above-mentioned a series of standard size.Like this, be no matter the electric motor car of what model, carry out charging or battery altering time can both use the battery of unified model or modular assembled in a battery compartment with the battery of unified model.The standardization of battery and battery compartment size is also very favourable for Charge Management, the corresponding standardized battery specifications of standardized size, charging station is prepared at battery, stores in a warehouse and can both obtain facility in conveying.
The battery of electric motor car of the present utility model and battery compartment can realize locking easily and unlocking, and it is convenient to change, and connect reliable, can meet filling of electric motor car and change electric demand during locking.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present utility model; those skilled in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection range of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (10)
1. the battery of an electric motor car and battery compartment, battery compartment is positioned at electric motor car, battery is installed in battery compartment, it is characterized in that, battery is coordinated with tenon nest by tenon with battery compartment, and one of them of battery and battery compartment has tenon, and wherein another has tenon nest, tenon is placed in tenon nest and locks, and battery is locked in battery compartment.
2. the battery of electric motor car as claimed in claim 1 and battery compartment, is characterized in that described battery has tenon, described battery compartment have tenon nest.
3. the battery of electric motor car as claimed in claim 2 and battery compartment, is characterized in that,
Described battery has the holding tank holding tenon, tenon is connected to drive motors and worm screw, and drive motors and worm screw drive tenon to stretch out or described holding tank of retracting;
Described tenon has groove, described tenon nest has ledge structure, ledge structure embeds in groove and makes tenon and the locking of tenon nest.
4. the battery of electric motor car as claimed in claim 2 and battery compartment, is characterized in that described battery having mechanical tenon, electrode tenon and the tenon that communicates, described battery compartment have mechanical tenon nest, electrode tenon nest and the tenon nest that communicates;
Described mechanical tenon is placed in mechanical tenon nest;
Described electrode tenon is placed in electrode tenon nest and forms electric path;
Described communication tenon is placed in communication tenon nest and forms communication path.
5. the battery of electric motor car as claimed in claim 2 and battery compartment, it is characterized in that described battery has mechanical tenon, described battery compartment has mechanical tenon nest, described mechanical tenon is placed in mechanical tenon nest;
Described battery has electric energy transceiver, described battery compartment has electric energy transceiver, described electric energy transceiver and electric energy transceiver form electric path;
Described battery and battery compartment have signal transceiver, and described signal transceiver forms communication path.
6. the battery of electric motor car as claimed in claim 1 and battery compartment, is characterized in that described battery having tenon nest, described battery compartment have tenon.
7. the battery of electric motor car as claimed in claim 6 and battery compartment, is characterized in that,
Described battery compartment has the holding tank holding tenon, tenon is connected to drive motors and worm screw, and drive motors and worm screw drive tenon to stretch out or described holding tank of retracting;
Described tenon has groove, described tenon nest has ledge structure, ledge structure embeds in groove and makes tenon and the locking of tenon nest.
8. the battery of electric motor car as claimed in claim 7 and battery compartment, is characterized in that described battery compartment having mechanical tenon, electrode tenon and the tenon that communicates, described battery have mechanical tenon nest, electrode tenon nest and the tenon nest that communicates;
Described mechanical tenon is placed in mechanical tenon nest;
Described electrode tenon is placed in electrode tenon nest and forms electric path;
Described communication tenon is placed in communication tenon nest and forms communication path.
9. the battery of electric motor car as claimed in claim 7 and battery compartment, it is characterized in that described battery compartment has mechanical tenon, described battery has mechanical tenon nest, described mechanical tenon is placed in mechanical tenon nest;
Described battery has electric energy transceiver, described battery compartment has electric energy transceiver, described electric energy transceiver and electric energy transceiver form electric path;
Described battery and battery compartment have signal transceiver, and described signal transceiver forms communication path.
10. the battery of as claimed in any one of claims 1-9 wherein electric motor car and battery compartment, it is characterized in that, described battery and battery compartment are used for the electric motor car of different model, and the size of described battery and battery compartment is standardized, and battery compartment is of a size of the integral multiple of battery size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761851.8U CN204966565U (en) | 2015-09-29 | 2015-09-29 | Battery and battery compartment of electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761851.8U CN204966565U (en) | 2015-09-29 | 2015-09-29 | Battery and battery compartment of electric motor car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204966565U true CN204966565U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520761851.8U Expired - Fee Related CN204966565U (en) | 2015-09-29 | 2015-09-29 | Battery and battery compartment of electric motor car |
Country Status (1)
| Country | Link |
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| CN (1) | CN204966565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206769A (en) * | 2015-09-29 | 2015-12-30 | 上海大众汽车有限公司 | Battery of electric vehicle and battery bin |
-
2015
- 2015-09-29 CN CN201520761851.8U patent/CN204966565U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206769A (en) * | 2015-09-29 | 2015-12-30 | 上海大众汽车有限公司 | Battery of electric vehicle and battery bin |
| CN105206769B (en) * | 2015-09-29 | 2018-10-30 | 上汽大众汽车有限公司 | The battery and battery compartment of electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Anting Jiading District Town, Shanghai City Road No. 123 in 201805 Patentee after: SAIC VOLKSWAGEN AUTOMOTIVE Co.,Ltd. Address before: Anting Jiading District Town, Shanghai City Road No. 123 in 201805 Patentee before: SHANGHAI VOLKSWAGEN AUTOMOTIVE Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |