PATENT DOCUMENT

Publication Number: US-8574321-B2
Application Number: US-201213664379-A
Country: US
Kind Code: B2

Title: Battery assembly method comprising a separate battery connector and a flex circuit for use in an electronic device

Abstract:
A battery assembly for use in an electronic device. The battery assembly may include a battery cell, a battery connector for providing power from the battery cell to the electronic device, and a flex circuit electrically coupling the battery cell to the electronic device. The battery connector may be located adjacent the battery cell, and may include one or more alignment mechanisms so that conductive pads connector align properly with corresponding conductive elements of the electronic device. The battery cell may be fixed to the electronic device using an adhesive layer placed between the cell and the electronic device. A tab may extend beyond the periphery of the battery cell to allow a user to pull or peal the battery cell from the electronic device for replacement or repair.

Claims:
What is claimed is: 
     
       1. A method of assembling a battery assembly for use with an electronic device, comprising:
 providing a battery cell substantially in the form of a box comprising: 
 a top surface, 
 a bottom surface, 
 elongated side walls, and 
 shortened side walls; 
 placing a battery connector, operative to transfer power from the battery cell to the electronic device and separate from the battery cell, adjacent a shortened side wall of the battery cell; and 
 coupling a flex circuit to the top surface of the battery cell and to the battery connector, the flex circuit operative to electrically couple the battery cell to the battery connector. 
 
     
     
       2. The method of  claim 1 , wherein the battery connector comprises a hole operative to receive a mechanical fastener, the mechanical fastener operative to engage a portion of the electronic device to secure the battery connector. 
     
     
       3. The method of  claim 1 , wherein the battery connector comprises a post operative to extend into an indentation of the electronic device to align the battery connector. 
     
     
       4. The method of  claim 1 , wherein the battery connector comprises a plurality of pads including at least one pad operative to transfer power and at least one pad operative to sense the temperature of the battery cell. 
     
     
       5. The method of  claim 4 , wherein the at least one pad operative to transfer power and the at least one pad operative to sense the temperature of the battery cell are symmetrically distributed on a surface of the battery connector. 
     
     
       6. The method of  claim 4 , wherein at least one pad of the plurality of pads comprises cantilever strips extending from the battery connector. 
     
     
       7. The method of  claim 6 , wherein at least one pad of the plurality of pads comprises a return operative to ensure that the at least one pad extends from the surface of the battery connector. 
     
     
       8. The method of  claim 1 , further comprising: coupling the coupling the battery cell to the electronic device using an adhesive layer. 
     
     
       9. The method of  claim 8 , wherein layer extends substantially around the battery cell. 
     
     
       10. The method of  claim 8 , wherein the adhesive layer comprises a hole. 
     
     
       11. The method of  claim 8 , wherein adhesive used between the adhesive layer and the battery cell is stronger than adhesive used between the electronic device and the adhesive layer. 
     
     
       12. The method of  claim 8 , wherein the adhesive layer comprises double sided tape. 
     
     
       13. The method of  claim 8 , wherein the adhesive layer comprises a tab operative to be pulled to release the battery cell. 
     
     
       14. The method of  claim 13 , wherein the tab is incorporated in the adhesive layer. 
     
     
       15. The method of  claim 13 , wherein the tab comprises a backing layer on each side of portions of the adhesive layer that form the tab. 
     
     
       16. The method of  claim 13 , wherein the tab comprises an aperture operative to receive a tool used to remove the battery assembly. 
     
     
       17. A method of assembling a battery assembly for use in an electronic device, comprising:
 providing a battery cell comprising a top surface; 
 providing a battery connector substantially in the form of a box operative to transfer power from the battery cell to the electronic device and separate from the battery cell; 
 coupling a flex circuit to the top surface of the battery cell and to the battery connector, the flex circuit operative to electrically couple the battery cell to the battery connector; and 
 coupling an adhesive layer to the top surface, the adhesive layer operative to bond to the electronic device. 
 
     
     
       18. The method of  claim 17 , wherein the adhesive layer comprises a tab extending from a periphery of the battery cell operative to remove the battery cell from the electronic device. 
     
     
       19. The method of  claim 17 , wherein the adhesive layer comprises a periphery portion that substantially follows an edge of the battery cell and an edge of the flex circuit. 
     
     
       20. The method of  claim 17 , wherein the battery connector comprises:
 a hole operative to receive a mechanical fastener, the mechanical fastener operative to engage a portion of the electronic device to secure the battery connector; and 
 a post operative to extend into an indentation of the electronic device to align the battery connector. 
 
     
     
       21. The method of  claim 17 , wherein the battery connector comprises:
 at least one pad operative to transfer power; and 
 at least one pad operative to sense the temperature of the battery cell. 
 
     
     
       22. The method of  claim 17 , wherein said operation of coupling a flex circuit to the top surface of the battery cell and to the battery connector further comprises:
 coupling the flex circuit to the top surface of the battery cell and to a sidewall of the battery cell.

Description:
This application is a continuation patent application of U.S. patent application Ser. No. 12/964,434, now U.S. Pat. No. 8,296,925 filed Dec. 9, 2010 and titled “Battery Assembly for Use in an Electronic Device,” which is a divisional patent application of U.S. patent application Ser. No. 12/112,764, now U.S. Pat. No. 7,871,720, filed Apr. 30, 2008 and titled “Battery Assembly for Use in an Electronic Device,” the disclosures of which are hereby incorporated herein in their entireties. 
    
    
     BACKGROUND OF THE INVENTION 
     This invention is directed to a removable battery assembly for use in an electronic device. 
     To perform as designed, electronic devices require power. Power may be supplied using many different approaches, including for example by coupling the electronic device to an external power supply (e.g., plugging a computer in an electrical socket), or by including a battery or capacitor in the electronic device. To lengthen the use of electronic devices powered by batteries, the batteries may be made rechargeable (e.g., using an external power supply), or replaceable (e.g., by providing access to a battery bay within the electronic device). In some electronic devices, only a technician may be able to replace batteries, while in other electronic devices the batteries may be replaceable by the user of the device. 
     Batteries may be coupled to the electronic device using different approaches. For example, a battery may be inserted in a bay of the electronic device case, and held in place using springs, foam, protrusions (e.g., in a cover placed over the bay), or any other suitable approach. In some embodiments, the battery may be retained using a press fit-type approach. 
     Different approaches may be used to provide power from the battery to electronic device components. For example, some battery cells include conductive tabs on the surface of the cell itself that are placed in contact with corresponding conductive tabs of the electronic device to provide power. Other battery cells may include wires or circuitry for coupling the battery to the electronic device. Although such approaches may be suitable for certain electronic devices, some smaller portable electronic devices, such as for example cellular telephones, portable media players, and PDAs may require a different battery system. 
     SUMMARY OF THE INVENTION 
     A battery assembly for use in an electronic device is provided. 
     The battery assembly may include a battery cell, a battery connector, and a flex circuit for electrically coupling the battery cell to the battery connector. The battery cell may substantially be in the form of a box. In some embodiments, the battery cell may include different shapes, for example to account for the shape of the electronic device in which the battery cell is placed. 
     The battery cell may provide power to the electronic device via the intermediary of the battery connector. The battery connector may be located at any suitable position relative the battery cell, including for example adjacent a side wall of the cell, between the top and bottom surfaces of the cell. The battery connector may include one or more conductive pads for transferring power. In some embodiments, the battery connector may include one or more pads for sensing the temperature of the electronic device. 
     A flex circuit may be used to electrically couple the battery cell to the battery connector. For example, the flex circuit may be placed over a conductive portion of the battery cell, and may also be placed over a conductive portion of the battery connector. The size of the flex circuit may be selected to ensure that enough power is available to be transferred from the battery cell to power the electronic device, and to quickly recharge the battery cell when necessary. In some embodiments, portions of the flex circuit may be attached to one or both of the battery cell and connector using an adhesive (e.g., to provide a structurally secure connection). 
     The battery assembly may be secured to the electronic device using any suitable approach. In some embodiments, the battery connector may include an aperture through which a mechanical fastener (e.g., a screw) may pass and engage the electronic device, thus securing the battery connector between the mechanical fastener and the electronic device. To ensure that the battery connector is properly aligned (e.g., and that the conductive pads are in contact with their counterparts in the electronic device), the battery connector may include a post operative to extend into an indentation of the electronic device (e.g. providing fine alignment. To release the battery assembly, the mechanical fastener may simply be removed. 
     The battery cell may be coupled to the electronic device using any suitable approach. In some embodiments, an adhesive layer attached to a surface of the battery cell may bind to the electronic device. For example, a layer of double sided tape may be placed on the battery cell, and pressed against the electronic device. To release the battery cell, a tab extending from the periphery of the battery cell may be pulled, cause the adhesive layer to detach from the electronic device (e.g., pull the tab to peal off the adhesive layer). In some embodiments, a special tool may be used, for example a tool operative to engage a feature (e.g., a hole) in the tab. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other features of the present invention, its nature and various advantages will be more apparent upon consideration of the following detailed description, taken in conjunction with the accompanying drawings in which: 
         FIG. 1  is a top perspective view of an illustrative battery assembly for an electronic device in accordance with one embodiment of the invention; 
         FIG. 2  is a bottom perspective view of the illustrative battery assembly of  FIG. 1  in accordance with one embodiment of the invention; 
         FIG. 3  is an exploded view of the battery assembly of  FIG. 1  in accordance with one embodiment of the invention; 
         FIG. 4  is a side view of the battery connector of the battery assembly of  FIG. 1  in accordance with one embodiment of the invention; 
         FIG. 5  is a perspective view of an illustrative removable battery assembly in accordance with one embodiment of the invention; 
         FIG. 6  is a side view of the removable battery assembly of  FIG. 5  in accordance with one embodiment of the invention; and 
         FIG. 7  is a perspective view of a detail of the of the removable battery assembly of  FIG. 5  in accordance with one embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  is a top perspective view of an illustrative battery assembly for an electronic device in accordance with one embodiment of the invention.  FIG. 2  is a bottom perspective view of the illustrative battery assembly of  FIG. 1  in accordance with one embodiment of the invention.  FIG. 3  is an exploded view of the battery assembly of  FIG. 1  in accordance with one embodiment of the invention.  FIG. 4  is a side view of the battery connector of the battery assembly of  FIG. 1  in accordance with one embodiment of the invention. Battery assembly  100  may include battery cell  110  and battery connector  120 . Battery cell  110  may include any suitable type of battery, including for example a single use battery or a rechargeable battery. The type of battery used may be selected based on the application of the battery (e.g., the type of electronic device using the battery cell). For example, in a cellular telephone or portable media player, a rechargeable battery may be preferable. As another example, in a digital camera or a remote controller, a single use battery may be preferable. 
     Battery cell  110  may use any suitable approach for holding a charge. For example, if battery cell  110  is a rechargeable battery, battery cell  110  may include a lead and sulfuric acid, nickel cadmium (NiCd), nickel metal hydride (NiMH), lithium ion (Li-ion), or a lithium ion polymer (Li-ion polymer) cell chemistry. In some embodiments, other cell chemistries may be used to hold the charge for the electronic device. Battery cell  110  may be in any suitable shape. For example, battery cell  110  may be substantially in a box-like shape, with top surface  111 , bottom surface  112 , elongated sides  113 , and shortened sides  114 , or any other suitable shape. In some embodiments, the shape of battery cell  110  may be determined by the shape of the electronic device in which the battery cell is placed. For example, if the electronic device includes a housing with a curved wall, battery cell  110  may include a curved surface or a chamfer  116  along one or more edges of battery cell  110 . 
     Battery connector  120  may provide a connection between battery cell  110  and the electronic device to which it is coupled. Battery connector may be located adjacent any suitable portion of battery cell  110 , including for example adjacent elongated side wall  113 , and between the planes defined by top surface  111  and bottom surface  112 . Battery connector  120  may be constructed in any suitable shape, including for example in a substantially box-like shape, with top surface  121 , bottom surface  122 , elongated sides  123 , and shortened sides  124 , or any other suitable shape. In some embodiments, battery connector  120  may include a chamfer  126  similar or substantially similar to chamfer  116  of battery cell  110  to ensure that battery assembly  100  fits correctly in the electronic device. 
     Any suitable approach may be used to electrically couple battery connector  120  to battery cell  110  (i.e., to allow power to flow from battery cell  110  to the electronic device). For example, battery cell  110  may include an electrically conductive portion on elongated side wall  113  that is placed in contact with an electrically conductive portion of battery connector  120  (e.g., along elongated side  123 ). As another example, battery cell  110  may be coupled to battery connector  120  using one or more wires (not shown). As still another example, battery cell  110  may be electrically coupled to battery connector  120  using flex circuit  130 . Because flex circuit  130  may be substantially entirely conductive, while remaining very thin, a large amount of power may pass from battery cell  110  to battery connector  120  using a low-profile structure (e.g., a large amount of bulky wires would be required to couple battery cell  110  to battery connector  120  in a manner equivalent to that of flex circuit  130 ). In addition, because a separate component is used to couple battery cell  110  to battery connector  120 , battery connector  120  may be easily reused with a new battery cell when an original battery cell  110  loses its charge, and easier to place in the electronic device. 
     Flex circuit  130  may be any suitable size, and constructed in any suitable shape. For example, the size of flex circuit  130  may be determined by the power requirements of the electronic device (e.g., the amount of power that needs to pass from battery cell  110  to battery connector  120  at any moment of time), the conductivity of flex circuit  130 , the size of the conductive portions of battery cell  110  and battery connector  120 , or any other suitable criteria. In the example shown in  FIGS. 1 and 2 , the portion  132  of flex circuit  130  coupled to battery connector  120  may be at least as long as elongated side wall  123  (e.g., to maximize the contact of flex circuit  130  with battery connector  120 ). In addition, the portion  131  of flex circuit  130  coupled to battery cell  110  may be in the shape of a quarter circle, where the radius of the circle is substantially equal to the length of portion  132 . In some embodiments, flex circuit  130  may in addition include portion  133  extending past the edge of top surface  111  and coupled to shortened side wall  114  (e.g., to improve or strengthen the structural connection between flex circuit  130  and battery cell  110 . 
     As shown in  FIG. 4 , battery connector  120  may be flexibly coupled such that battery connector  120  may move relative battery cell  110 , for example to facilitate the placement of battery assembly  100  in the electronic device. In particular, battery connector  120  may rotate relative battery cell  110  along axis  135 . This may allow battery cell  110  to be independently coupled to the electronic device (e.g., using an adhesive layer, as described below). Battery connector  120  may provide power to the electronic device using any suitable approach. In some embodiments, battery connector  120  may include pads  126 ,  127 ,  128  and  129 , which may be distributed on any suitable surface of battery connector  120  (e.g., bottom surface  122 ). Pads  126 ,  127 ,  128  and  129  may be used to provide any suitable conductive or sensing mechanism. For example, two of the pads may be used to transfer power (e.g., a power pad and a ground pad), and two of the pads may be coupled to temperature sensing components (e.g., to ensure that battery cell  110  does not overheat). 
     Pads  126 ,  127 ,  128  and  129  may be disposed on battery connector  120  using any suitable approach. For example, different pads my be placed on different sides of battery connector  120  (e.g., power and ground pads on bottom surface  122 , temperature sensing pads on top surface  121 ). In some embodiments, all of the pads may be located on the same surface of battery connector  120  (e.g., on bottom surface  122 , as shown in  FIG. 2 ). To reduce errors in the placement of battery connector  120  in the electronic device, the pads may be symmetrically distributed. For example, pads  126  and  129 , which may be located on the outer edges of bottom surface  120 , may provide power, while pads  127  and  128 , which may be located inside of pads  126  and  129 , may provide temperature sensing capabilities. The pads may be the same or different, for example based on their use (e.g., power supplying pads  126  and  129  may be wider, larger, or in a different material than temperature sensing pads  127  and  128 ). 
     Pads  126 ,  127 ,  128  and  129  may be manufactured from any suitable conductive material, including for example a metal, composite material, plasma, or any other suitable material. To ensure that battery connector  120  always maintains a sufficient electrical coupling with the electronic device, a portion of the pads may flexibly extend from battery connector  120  to contact a corresponding portion of the electronic device. For example, the pads may include a cantilever spring (e.g., flat strip  141  coupled to the battery connector at end  142 ). In some embodiments, the pads may include flattened or rounded contact surface  143  to maximize the portion of each pad that is in contact with the electronic device. In addition, each pad may include return  144  connecting contact surface  143  to battery connector  120  beneath strip  141 . Return  144  may provide additional resistance when the electronic device presses against contact surface  143  to ensure that power continues to pass from battery cell  110  to the electronic device, even during shock or impact events that could otherwise cause the pads to be displaced. 
     Battery connector  120  may include any suitable mechanism for aligning pads  126 ,  127 ,  128  and  129  with the electronic device. In some embodiments, battery connector  120  may include aperture  152  for receiving a mechanical connector (e.g., a screw) operative to engage an appropriate feature of the electronic device (e.g., a threaded boss insert). Aperture  152  and the threaded boss (or other feature) of the electronic device may be designed such that when aperture  152  is aligned with the threaded boss, the battery connector pads are aligned with appropriate elements (e.g., conductive portions) of the electronic device. The mechanical connector may then pass through aperture  152  and engage the threaded boss to ensure that battery connector  120  remains substantially immobile, or at least that the pads remain in contact with their counterparts on the electronic device, even during shock or impact events. In some embodiments, at least a portion of the threaded boss insert, or other feature may extend into aperture  152  to provide rough alignment and positioning of battery connector  120 . 
     In some embodiments, battery connector  120  may instead or in addition include post  154 . The electronic device may include an indentation located such that when battery connector  120  is properly aligned on the electronic device, post  154  is placed in the indentation. In some embodiments, the indentation may be in a circuit board or other component of the electronic device. Because each of pads  126 ,  127 ,  128  and  129  may need to be placed in contact with the proper counterpart element of the electronic device to ensure proper functioning, battery connector  120  may include one or more alignment features. For example, battery connector  120  may include a rough alignment mechanism (e.g., aperture  152 ), a fine alignment mechanism (e.g., post  154 ), and a locking screw (e.g., a mechanical fastener passing through aperture  152 ). In some embodiments, other alignment mechanisms may be used instead or in addition of those described here. 
     The battery assembly may be coupled to the electronic device using any suitable approach. In some embodiments, the battery assembly may be fixedly coupled to the electronic device (e.g., by using a strong adhesive or other mechanism that cannot be undone without damaging the electronic device, or by preventing access to the battery assembly). In some embodiments, the battery assembly may instead be detachedly coupled to the electronic device.  FIG. 5  is a perspective view of an illustrative removable battery assembly in accordance with one embodiment of the invention.  FIG. 6  is a side view of the removable battery assembly of  FIG. 5  in accordance with one embodiment of the invention.  FIG. 7  is a perspective view of a detail of the of the removable battery assembly of  FIG. 5  in accordance with one embodiment of the invention. 
     Battery assembly  500  may include battery cell  510 , battery connector  520 , and flex circuit  530 , which may include some or all of the features of the battery cell, battery connector, and flex circuit described above in connection with  FIGS. 1-4 . To couple battery assembly  500  to an electronic device, adhesive layer  540  may be attached to top surface  511  of battery cell  510 . Adhesive layer  540  may include any suitable type of adhesive, including for example, an adhesive, a material to which an adhesive is added (e.g., adding an epoxy or other glue to the material of layer  540 ), a tape (e.g., double sided tape), hook and fastener material (e.g., Velcro), or any other suitable type of adhesive. In some embodiments, adhesive layer  540  may include a double sided tape with a backing layer on at least the side facing the electronic device (e.g., to allow for the manufacturing of battery assembly  500  prior to insertion in the electronic device. 
     Adhesive layer  540  may be constructed in any suitable shape. For example, adhesive layer  540  may cover most or substantially all of top surface  511  (e.g., to ensure that battery assembly  500  does not move while in use). As another example, adhesive layer  540  may include one or more holes  544  to allow for easier removal and replacement of battery assembly  500 . In some embodiments, adhesive layer  540  may at least include periphery portions  542  for holding the edges of battery cell  510 . Adhesive layer  540  may include any suitable topography, and may for example include curved portion  546  for passing adjacent flex circuit  530  (e.g., so as not to disturb or affect the electrical coupling between battery cell  510  and battery connector  520 ). In some embodiments, the total surface of adhesive layer  540  and the strength of the adhesive used may be selected to ensure that battery cell  510  remains coupled to the electronic device while allowing easy removal when necessary (e.g., adhesive layer  540  is only on periphery portions  542 ). 
     Battery assembly  500  may include any suitable element or feature for assisting a user in removing battery assembly  500  from the electronic device (e.g., when the battery is defective or too old). In some embodiments, battery assembly  500  may include tab  550  extending beyond the periphery of battery cell  510 . To remove battery assembly  500  from the electronic device, a user may pull tab  550  to cause adhesive layer  540  to peal from the electronic device, thus releasing battery assembly  500 . In some embodiments, a different adhesive may be used on each side of adhesive layer  540  so that battery assembly  500  and adhesive layer  540  are removed from the electronic device in response to pulling or pealing tab  550  (e.g., the adhesive used between battery cell  510  and adhesive layer  540  is stronger than the adhesive used between adhesive layer  540  and the electronic device). 
     Tab  550  may be constructed using any suitable approach to ensure that tab  550  does not become detached from battery assembly  500  when the battery assembly is removed. For example, tab  550  may be constructed from a portion of adhesive layer  540  that extends beyond the periphery of top surface  511  of battery cell  510 . The upper and lower surfaces of adhesive layer  540  that forms tab  550  may be covered by a non-adhesive backing layers or liners  554  and  556 , respectively, to prevent tab  550  from becoming fastened or attached to an element of the electronic device, thus preventing tab  550  from being accessible. 
     Tab  550  may include any suitable feature for assisting a user in removing battery assembly  500 . For example, tab  550  may be large enough for a user to grasp the tab with his fingers. As another example, tab  550  may include a feature (e.g., hole  552 ) for receiving a tool operative to remove battery assembly  500 . Any suitable tool, including for example a tool having a hook for engaging hole  552 , may be used to pull tab  550 . In some embodiments, a specific tool may be designed for use with tab  550 , and may be provided to users or technicians who wish to remove and replace battery assemblies. 
     Prior to removing battery assembly  500  by separating adhesive layer  540  from the electronic device, the user may first disengage battery connector  520  from the electronic device. For example, a user may first remove a screw or other mechanical fastener connecting battery connector  520  to the electronic device. Once battery connector  520  has been disengaged, the user may peel adhesive layer  540  and displace battery cell  510  with minimal risk of damaging battery connector  520  and flex circuit  530 . 
     When replacing a battery of the electronic device, the user may first open the electronic device (e.g., open a battery bay) to access the battery assembly. Next, the user may remove the old battery assembly by removing the battery connector, and separating the adhesive layer placed between the battery cell and the electronic device from the electronic device (e.g., by pealing the adhesive layer by pulling on a tab extending from the battery cell). The replacement battery assembly may include a battery cell, battery connector, and flex circuit coupling the battery cell to the battery connector. To place the replacement battery assembly in the electronic device, the user may first place the battery connector in the electronic device (e.g., aligning the pads of the battery connector). Once the battery connector is properly coupled and secured, the user may remove a backing layer from an adhesive layer secured to the battery cell (e.g., a backing layer between the adhesive layer and the electronic device) to expose the adhesive of the adhesive layer, and place the battery cell in the electronic device. The newly exposed adhesive layer may adhere to the electronic device, thus finishing securing the battery assembly. The user may then close the electronic device (e.g., close the battery bay) to complete the task. 
     In some embodiments, battery connector  520  may remain in the electronic device, and only battery cell  510  may be replaced. For example, instead of decoupling battery connector  520  from the electronic device, the user or technician may instead remove flex circuit  530  from one or both of battery cell  510  and battery connector  520 . The replacement battery cell  510  may then be inserted in the electronic device, and the original or a new flex circuit  530  may be used to electrically couple the replacement battery cell  510  battery connector  520 . Keeping the same battery connector  520  may reduce the cost of replacing a battery, and also reduce the impact of the electronic device on the environment. 
     The above described embodiments of the present invention are presented for purposes of illustration and not of limitation, and the present invention is limited only by the claims which follow.

Metadata:
Filing Date: 20121030
Publication Date: 20131105
Grant Date: 20131105
Priority Date: 20080430
Inventors: MYERS SCOTT
WANG ERIK
WEBER TRENT
SLOEY JASON
Assignee: APPLE INC
CPC Classifications: [{"code": "B23P19/04", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01M50/103", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/103", "inventive": true, "first": true, "tree": "[]"}, {"code": "Y10T29/49002", "inventive": false, "first": false, "tree": "[]"}, {"code": "Y10T29/49815", "inventive": false, "first": false, "tree": "[]"}, {"code": "Y10T29/49826", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01M2220/30", "inventive": false, "first": false, "tree": "[]"}, {"code": "Y10T29/49108", "inventive": false, "first": false, "tree": "[]"}, {"code": "Y02E60/10", "inventive": false, "first": false, "tree": "[]"}]
Family ID: 41257303