PATENT DOCUMENT

Publication Number: US-10367224-B2
Application Number: US-201815882201-A
Country: US
Kind Code: B2

Title: Battery with multiple jelly rolls in a single pouch

Abstract:
The disclosed embodiments provide a battery cell which includes a set of jelly rolls enclosed in a pouch. Each jelly roll includes layers which are wound together, including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a first set of conductive tabs and a second set of conductive tabs. Each of the first set of conductive tabs is coupled to the cathode of one of the jelly rolls, and each of the second set of conductive tabs is coupled to the anode of one of the jelly rolls. At least one of the first set and one of the second set of conductive tabs extend through seals in the pouch to provide terminals for the battery cell.

Claims:
What is claimed is: 
     
       1. A battery pack, comprising:
 a plurality of jelly rolls, wherein each jelly roll of the plurality of jelly rolls comprises wound layers of a cathode with an active coating, a separator, and an anode with an active coating; 
 a pouch enclosing the plurality of jelly rolls; 
 a first set of conductive tabs,
 wherein a first end of each conductive tab of the first set of conductive tabs is coupled to the cathode of each jelly roll of the plurality of jelly rolls, and 
 wherein a second end of each conductive tab of the first set of conductive tabs extends through the pouch; and 
 
 a second set of conductive tabs,
 wherein a first end of each conductive tab of the second set of conductive tabs is coupled to the anode of each jelly roll of the plurality of jelly rolls, and 
 wherein a second end of each conductive tab of the second set of conductive tabs extends through the pouch. 
 
 
     
     
       2. The battery pack of  claim 1 , wherein the plurality of jelly rolls are stacked. 
     
     
       3. The battery pack of  claim 1 , wherein the plurality of jelly rolls are arranged side-by-side in the pouch. 
     
     
       4. The battery pack of  claim 1 , wherein a first jelly roll of the plurality of jelly rolls is positioned perpendicular to a second jelly roll of the plurality of jelly rolls. 
     
     
       5. The battery pack of  claim 1 , further comprising a plurality of frames, the plurality of frames disposed within the pouch, wherein each frame of the plurality of frames separates a respective jelly roll of the plurality of jelly rolls from contact with the remaining jelly rolls of the plurality of jelly rolls. 
     
     
       6. The battery pack of  claim 1 , wherein the pouch further comprises a plurality of compartments, wherein each compartment of the plurality of compartments separates a respective jelly roll of the plurality of jelly rolls from contact with the remaining jelly rolls of the plurality of jelly rolls. 
     
     
       7. The battery pack of  claim 6 , wherein each compartment of the plurality of compartments comprises an indented periphery formed from the pouch. 
     
     
       8. The battery pack of  claim 1 , wherein the plurality of jelly rolls are electrically connected in a parallel configuration. 
     
     
       9. The battery pack of  claim 1 , wherein the plurality of jelly rolls vary in at least one of a length, thickness, and width. 
     
     
       10. A method for manufacturing a battery pack, the method comprising:
 inserting a plurality of jelly rolls within a pouch, each jelly roll of the plurality of jelly rolls comprising wound layers of a cathode with an active coating, a separator, and an anode with an active coating; 
 connecting first ends of a first set of conductive tabs to the cathode of each jelly roll of the plurality of jelly rolls; 
 disposing second ends of the first set of conductive tabs through the pouch; 
 connecting first ends of a second set of conductive tabs to the anode of each jelly roll of the plurality of jelly rolls; and 
 disposing second ends of the second set of conductive tabs through the pouch. 
 
     
     
       11. The method of  claim 10 , wherein the plurality of jelly rolls are stacked. 
     
     
       12. The method of  claim 10 , wherein the plurality of jelly rolls are arranged side-by-side in the pouch. 
     
     
       13. The method of  claim 10 , wherein a first jelly roll of the plurality of jelly rolls is positioned perpendicular to a second jelly roll of the plurality of jelly rolls. 
     
     
       14. The method of  claim 10 , further comprising disposing a plurality of frames within the pouch, wherein each frame of the plurality of frames separates a respective jelly roll of the plurality of jelly rolls from contact with the remaining jelly rolls of the plurality of jelly rolls. 
     
     
       15. The method of  claim 10 , further comprising forming a plurality of compartments from the pouch, wherein each compartment of the plurality of compartments separates a respective jelly roll of the plurality of jelly rolls from contact with the remaining jelly rolls of the plurality of jelly rolls. 
     
     
       16. The method of  claim 10 , wherein the plurality of jelly rolls vary in at least one of a length, thickness, and width. 
     
     
       17. A portable electronic device, comprising:
 a set of components powered by a battery pack, the battery pack comprising:
 a plurality of jelly rolls, wherein each jelly roll of the plurality of jelly rolls comprises wound layers of a cathode with an active coating, a separator, and 
 
 an anode with an active coating;
 a pouch enclosing the plurality of jelly rolls; 
 a first set of conductive tabs,
 wherein a first end of each conductive tab of the first set of conductive tabs is coupled to the cathode of each jelly roll of the plurality of jelly rolls, and 
 wherein a second end of each conductive tab of the first set of conductive tabs extends through the pouch; and 
 
 a second set of conductive tabs,
 wherein a first end of each conductive tab of the second set of conductive tabs is coupled to the anode of each jelly roll of the plurality of jelly rolls, and 
 wherein a second end of each conductive tab of the second set of conductive tabs extends through the pouch. 
 
 
 
     
     
       18. The portable electronic device of  claim 17 , wherein the plurality of jelly rolls are stacked. 
     
     
       19. The portable electronic device of  claim 17 , wherein the plurality of jelly rolls are arranged side-by-side in the pouch. 
     
     
       20. The portable electronic device of  claim 17 , wherein a first jelly roll of the plurality of jelly rolls is positioned perpendicular to a second jelly roll of the plurality of jelly rolls.

Description:
RELATED APPLICATIONS 
     This application is a continuation of, and hereby claims priority under 35 U.S.C. § 120 to, pending U.S. patent application Ser. No. 14/135,124, entitled, “Battery with Multiple Jelly Rolls In a Single Pouch,” by inventors Ramesh C. Bhardwaj, Taisup Hwang and Richard M. Mank, filed on 19 Dec. 2013, which is a continuation of, and hereby claims priority under 35 U.S.C. § 120 to, U.S. patent application Ser. No. 12/694,144, entitled, “Battery with Multiple Jelly Rolls In a Single Pouch,” by inventors Ramesh C. Bhardwaj, Taisup Hwang and Richard M. Mank, filed on 26 Jan. 2010, now U.S. Pat. No. 9,331,358, issued on 3 May 2016, both of which are incorporated by reference in their entirety. 
    
    
     BACKGROUND 
     Field 
     The present embodiments relate to batteries for portable electronic devices. More specifically, the present embodiments relate to battery cells with multiple jelly rolls in a single pouch. 
     Related Art 
     Rechargeable batteries are presently used to provide power to a wide variety of portable electronic devices, including laptop computers, cell phones, PDAs, digital music players and cordless power tools. The most commonly used type of rechargeable battery is a lithium battery, which can include a lithium-ion or a lithium-polymer battery. 
     Lithium-polymer batteries often include cells that are packaged in flexible pouches. Such pouches are typically lightweight and inexpensive to manufacture. Moreover, pouches may be tailored to various cell dimensions, allowing lithium-polymer batteries to be used in space-constrained portable electronic devices such as mobile phones, laptop computers, and/or digital cameras. For example, a lithium-polymer battery cell may achieve a packaging efficiency of 90-95% by enclosing a jelly roll and electrolyte in a foil pouch. Multiple pouches may then be placed side-by-side within a portable electronic device and connected in series and/or in parallel to form a battery for the portable electronic device. 
     Hence, the use of portable electronic devices may be facilitated by improvements related to the packaging efficiency, capacity, form factor, cost, and/or manufacturing of lithium-polymer battery cells. 
     SUMMARY 
     The disclosed embodiments provide a battery cell which includes a set of jelly rolls enclosed in a pouch. Each jelly roll includes layers which are wound together, including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a first set of conductive tabs and a second set of conductive tabs. Each of the first set of conductive tabs is coupled to the cathode of one of the jelly rolls, and each of the second set of conductive tabs is coupled to the anode of one of the jelly rolls. At least one of the first set and one of the second set of conductive tabs extend through seals in the pouch to provide terminals for the battery cell. 
     In some embodiments, the jelly rolls are electrically connected within the pouch or outside the pouch using the first and second sets of conductive tabs. 
     In some embodiments, the jelly rolls are electrically connected in a series configuration, in a parallel configuration, or in a series and parallel configuration. 
     In some embodiments, the jelly rolls are internally separated within the pouch if the jelly rolls are electrically connected in the series configuration. 
     In some embodiments, the jelly rolls are of different thicknesses. 
     In some embodiments, the jelly rolls are sealed in the pouch based on an asymmetric battery design. 
     In some embodiments, sealing the jelly rolls in the pouch involves at least one of gluing the jelly rolls to the inside of the pouch and placing the jelly rolls within a set of frames inside the pouch. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG. 1  shows a battery cell in accordance with an embodiment. 
         FIG. 2  shows a battery cell in accordance with an embodiment. 
         FIG. 3  shows a battery cell in accordance with an embodiment. 
         FIG. 4  shows a battery cell in accordance with an embodiment. 
         FIG. 5  shows a battery cell in accordance with an embodiment. 
         FIG. 6  shows a flowchart illustrating the process of manufacturing a battery cell in accordance with an embodiment. 
         FIG. 7  shows a portable electronic device in accordance with an embodiment. 
     
    
    
     In the figures, like reference numerals refer to the same figure elements. 
     DETAILED DESCRIPTION 
     The following description is presented to enable any person skilled in the art to make and use the embodiments, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Thus, the present invention is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein. 
     The data structures and code described in this detailed description are typically stored on a computer-readable storage medium, which may be any device or medium that can store code and/or data for use by a computer system. The computer-readable storage medium includes, but is not limited to, volatile memory, non-volatile memory, magnetic and optical storage devices such as disk drives, magnetic tape, CDs (compact discs), DVDs (digital versatile discs or digital video discs), or other media capable of storing code and/or data now known or later developed. 
     The methods and processes described in the detailed description section can be embodied as code and/or data, which can be stored in a computer-readable storage medium as described above. When a computer system reads and executes the code and/or data stored on the computer-readable storage medium, the computer system performs the methods and processes embodied as data structures and code and stored within the computer-readable storage medium. 
     Furthermore, methods and processes described herein can be included in hardware modules or apparatus. These modules or apparatus may include, but are not limited to, an application-specific integrated circuit (ASIC) chip, a field-programmable gate array (FPGA), a dedicated or shared processor that executes a particular software module or a piece of code at a particular time, and/or other programmable-logic devices now known or later developed. When the hardware modules or apparatus are activated, they perform the methods and processes included within them. 
     The disclosed embodiments provide a battery cell containing a set of jelly rolls enclosed in a pouch. Each jelly roll includes layers which are wound together, including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a first conductive tab coupled to the cathode of one or more of the jelly rolls and a second conductive tab coupled to the anode of one or more of the jelly rolls. The first and second conductive tabs extend through seals in the pouch to provide terminals for the battery cell. The first and second conductive tabs may also be used to electrically connect the jelly rolls within the pouch or outside the pouch, in series and/or in parallel. 
     The jelly rolls may be of different thicknesses and sealed in the pouch based on an asymmetric battery design. As a result, the battery cell may be designed to accommodate the space constraints of a portable electronic device such as a laptop computer, mobile phone, personal digital assistant (PDA), digital camera, and/or portable media player. For example, jelly rolls of various thicknesses may be stacked, placed side-by-side, and/or placed top-to-bottom within the pouch to fit the battery cell behind the display of a laptop computer. The use of multiple jelly rolls in a single pouch may additionally provide advantages related to battery packaging efficiency, capacity, manufacturing, and/or cost. 
       FIG. 1  shows a battery cell  100  in accordance with an embodiment. Battery cell  100  includes a set of jelly rolls  101 - 103  and a set of conductive tabs  104 - 109 . Each jelly roll  101 - 103  includes a number of layers which are wound together, including a cathode with an active coating, a separator, and an anode with an active coating. Jelly rolls are well known in the art and will not be described further. 
     In one or more embodiments, jelly rolls  101 - 103  are enclosed in a flexible pouch, which is formed by folding a flexible sheet along a fold line  112 . For example, the flexible sheet can be comprised of aluminum with a polymer film, such as polypropylene. After the flexible sheet is folded, the flexible sheet can be sealed, for example by applying heat along side seal  111  and along a terrace seal  110 . Jelly rolls  101 - 103  may be sealed within the pouch by gluing jelly rolls  101 - 103  to the inside of the pouch and/or placing jelly rolls  101 - 103  within a set of frames inside the pouch. 
     Furthermore, jelly rolls  101 - 103  may be coupled to conductive tabs  104 - 109  and to one another through conductive tabs  104 - 109 . In particular, jelly roll  101  is coupled to conductive tabs  104 - 105 , jelly roll  102  is coupled to conductive tabs  106 - 107 , and jelly roll  103  is coupled to conductive tabs  108 - 109 . Conductive tab  104  extends through terrace seal  110  to provide a positive terminal for battery cell  100 , and conductive tab  109  extends through terrace seal  110  to provide a negative terminal for battery cell  100 . 
     In one or more embodiments, conductive tabs  104 ,  106 , and  108  are respectively coupled to the cathodes of jelly rolls  101 ,  102 , and  103 , while conductive tabs  105 ,  107 , and  109  are respectively coupled to the anodes of jelly rolls  101 ,  102 , and  103 . Jelly rolls  101 - 103  may then be electrically connected in a parallel configuration by coupling conductive tabs  106  and  108  to conductive tab  104  and by coupling conductive tabs  105  and  107  to conductive tab  109  within the pouch. As discussed below with respect to  FIG. 2 , conductive tabs  104 - 109  may also be used to connect jelly rolls  101 - 103  within or outside the pouch in a series configuration or a series-and-parallel configuration. 
     A battery pack may further be formed by coupling together a number of battery cells (e.g., battery cell  100 ) in a series, parallel, or series-and-parallel configuration. As a result, complex battery configurations may be achieved by electrically connecting jelly rolls within each battery cell, as well as battery cells within the battery pack, in various series and/or parallel configurations. The coupled cells may be enclosed in a hard case to complete the battery pack, or the coupled cells may be embedded within the enclosure of a portable electronic device, such as a laptop computer, mobile phone, personal digital assistant (PDA), digital camera, and/or portable media player. 
     Because battery cell  100  contains multiple jelly rolls  101 - 103  enclosed within a single pouch, battery cell  100  may provide increased packaging efficiency and/or capacity over battery cells that contain only one jelly roll per pouch. For example, if side seal  111  is 4 mm wide, battery cell  100  may provide the same capacity as three battery cells containing one jelly roll each while reducing the width required for the jelly rolls by 16 mm. Conversely, battery cell  100  may provide three times more capacity than a battery cell formed by enclosing only one jelly roll in a pouch. 
       FIG. 2  shows a battery cell  200  in accordance with an embodiment. As with battery cell  100  of  FIG. 1 , battery cell  200  includes a set of jelly rolls  201 - 203  enclosed within a pouch and a set of conductive tabs  204 - 209  coupled to jelly rolls  201 - 203 . For example, conductive tabs  204 ,  206 , and  208  may be respectively coupled to the cathodes of jelly rolls  201 ,  202 , and  203 , while conductive tabs  205 ,  207 , and  209  may be respectively coupled to the anodes of jelly rolls  201 ,  202 , and  203 . However, all conductive tabs  204 - 209  extend through seals in the pouch, allowing jelly rolls  201 - 203  to be electrically connected outside the pouch. 
     In particular, jelly rolls  201 - 203  may be connected in a series, parallel, or series-and-parallel configuration using conductive tabs  204 - 209 . For example, jelly rolls  201 - 203  may be connected in a parallel configuration by coupling conductive tabs  204 ,  206 , and  208  to one another and by coupling conductive tabs  205 ,  207 , and  209  to one another. On the other hand, jelly rolls  201 - 203  may be connected in a series configuration by coupling conductive tab  205  with conductive tab  206 , coupling conductive tab  207  with conductive tab  208 , and using conductive tabs  204  and  209  as the positive and negative terminals of the battery cell, respectively. 
     As shown in  FIG. 2 , the pouch includes two internal separations  210 - 211  between jelly rolls  201 - 203 . Internal separations  210 - 211  may be used to create compartments that physically separate jelly rolls  201 - 203  from one another. Such physical separation may allow series connections between jelly rolls  201 - 203  to produce voltage increases in the battery cell. Internal separations  210 - 211  may be created by forming indents and/or ridges in a flexible sheet used to create the pouch. As the sheet is folded and sealed, spot welding may be used to connect the indents and/or ridges. The compartments created using the indents and/or ridges may then be separately filled with one or more jelly rolls and electrolyte. 
       FIG. 3  shows a battery cell  300  in accordance with an embodiment. As with  FIGS. 1-2 , battery cell  300  includes a set of jelly rolls  301 - 303  enclosed within a pouch, as well as a set of conductive tabs  304 - 309  coupled to jelly rolls  301 - 303  and to one another. In particular, conductive tabs  304 ,  306 , and  308  are respectively connected to the cathodes of jelly rolls  301 ,  302 , and  303  and to one another, and conductive tabs  305 ,  307 , and  309  are respectively connected to the anodes of jelly rolls  301 ,  302 , and  303  and to one another. Conductive tab  304  extends through the seal of the pouch to provide a positive terminal for battery cell  300 , and conductive tab  309  extends through the seal of the pouch to provide a negative terminal for battery cell  300 . Alternatively, as with  FIG. 2 , conductive tabs  304 - 309  may all extend through the seal of the pouch to enable electrical connections between jelly rolls  301 - 303  outside the pouch. 
     In addition, battery cell  300  contains jelly rolls  301 - 303  of different thicknesses and/or sizes. As shown in  FIG. 3 , jelly roll  301  is thinnest, jelly roll  303  is of medium thickness, and jelly roll  302  is the thickest. Furthermore, jelly rolls  301 - 303  may be placed in the pouch based on an asymmetric battery design that allows battery cell  300  to fill up the free space within a portable electronic device. For example, jelly rolls  301 - 303  and/or other jelly rolls may be placed side-by-side, placed top-to-bottom, and/or stacked within the pouch to fit battery cell  300  around other components inside a mobile phone, laptop computer, portable media player, digital camera, and/or PDA. 
       FIG. 4  shows a battery cell in accordance with an embodiment. In particular,  FIG. 4  shows a side view of battery cell  300  of  FIG. 3 , with jelly rolls  401 - 403  corresponding to jelly rolls  301 - 303 . Because jelly roll  402  is thicker than jelly rolls  401  and  403 , jelly roll  402  takes up more space in at least two dimensions within the pouch than jelly rolls  401  and  403 . Jelly roll  403  takes up the second largest amount of space in at least two dimensions, and jelly roll  401  takes up the least amount of space in at least two dimensions. As discussed below with respect to  FIG. 5 , jelly rolls within battery cells may also vary in length, thus allowing for asymmetric battery designs that utilize space within portable electronic devices in all three dimensions. 
       FIG. 5  shows a battery cell in accordance with an embodiment. The battery cell includes four jelly rolls  501 - 504  of different thicknesses and lengths. Jelly rolls  501 - 503  are placed side-by-side within the pouch, and jelly roll  504  is placed top-to-bottom with jelly rolls  501 - 502 . The battery cell may also include jelly rolls that are stacked on top of each other. For example, additional jelly rolls may be stacked on top of jelly rolls  501 - 504  to increase the thickness of the pouch in one or more dimensions. 
     The battery cell additionally includes pairs of conductive tabs  505 - 508  coupled to jelly rolls  501 - 504  and extended through seals in the pouch. Within each pair of conductive tabs, one conductive tab is coupled to the cathode of a jelly roll, and the other conductive tab is coupled to the anode of the same jelly roll. Jelly rolls  501 - 504  may then be electrically connected in series and/or in parallel by coupling conductive tabs  505 - 508  in various configurations outside the pouch. As described above, jelly rolls  501 - 504  may include internal separations within the pouch if series connections between jelly rolls  501 - 504  are to be made. 
     As a result, the use and placement of multiple jelly rolls of different lengths and thicknesses within a pouch may allow the creation of a custom battery cell that maximizes the use of free space within a portable electronic device and provides greater capacity, packaging efficiency, and/or voltage than battery cells that contain only one jelly roll per pouch. For example, multiple thin jelly rolls may be placed side-by-side and/or top-to-bottom within a pouch to create a battery cell that fits behind the display of a laptop computer and provides power to the laptop computer. Along the same lines, jelly rolls of various thicknesses and lengths may be sealed in a pouch to create an asymmetric battery cell that fits around other components (e.g., processors, printed circuit boards (PCBs), memory, storage, etc.) inside the enclosure of a mobile phone. 
       FIG. 6  shows a flowchart illustrating the process of manufacturing a battery cell in accordance with an embodiment. In one or more embodiments, one or more of the steps may be omitted, repeated, and/or performed in a different order. Accordingly, the specific arrangement of steps shown in  FIG. 6  should not be construed as limiting the scope of the embodiments. 
     Initially, a set of jelly rolls and a pouch to accommodate the jelly rolls are obtained (operation  602 ). The jelly rolls may be of varying thicknesses and/or lengths. Next, the jelly rolls are placed within the pouch (operation  604 ). For example, the jelly rolls may be placed side-by-side, top-to-bottom, and/or stacked within the pouch. The jelly rolls may be glued to the inside of the pouch and/or placed within a set of frames inside the pouch. 
     For each jelly roll, a first conductive tab is coupled to the cathode of the jelly roll (operation  606 ), and a second conductive tab is coupled to the anode of the jelly roll (operation  608 ). If additional jelly rolls require coupling to conductive tabs (operation  610 ), operations  606 - 608  are performed for all remaining jelly rolls in the pouch. After all jelly rolls are coupled to conductive tabs, at least one pair of conductive tabs is extended through seals in the pouch to provide terminals for the battery cell (operation  612 ). For example, only one pair of conductive tabs may be extended through seals in the pouch if electrical connections between the jelly rolls are made within the pouch. On the other hand, multiple pairs of conductive tabs may be extended through seals in the pouch if electrical connections between the jelly rolls are to be made outside the pouch. 
     Finally, the jelly rolls are sealed in the pouch (operation  614 ). For example, the jelly rolls may be sealed by spot welding and/or applying heat to the seals. Internal separations between the jelly rolls may also be formed during sealing of the jelly rolls in the pouch. As discussed above, the internal separations may allow voltage increases in the battery cell if the jelly rolls are connected in series. 
     The above-described rechargeable battery cell can generally be used in any type of electronic device. For example,  FIG. 7  illustrates a portable electronic device  700  which includes a processor  702 , a memory  704  and a display  708 , which are all powered by a battery  706 . Portable electronic device  700  may correspond to a laptop computer, mobile phone, PDA, portable media player, digital camera, and/or other type of battery-powered electronic device. Battery  706  may correspond to a battery pack that includes one or more battery cells. Each battery cell includes a set of jelly rolls connected in series and/or in parallel. 
     The foregoing descriptions of various embodiments have been presented only for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the forms disclosed. Accordingly, many modifications and variations will be apparent to practitioners skilled in the art. Additionally, the above disclosure is not intended to limit the present invention.

Metadata:
Filing Date: 20180129
Publication Date: 20190730
Grant Date: 20190730
Priority Date: 20100126
Inventors: BHARDWAJ, RAMESH C.
HWANG, TAISUP
MANK, RICHARD M.
Assignee: APPLE INC
CPC Classifications: [{"code": "Y10T29/4911", "inventive": false, "first": false, "tree": "[]"}, {"code": "Y10T29/49108", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01M10/0431", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01M10/0587", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M10/0404", "inventive": true, "first": false, "tree": "[]"}, {"code": "Y10T29/4911", "inventive": false, "first": false, "tree": "[]"}, {"code": "Y10T29/49108", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01M10/0431", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01M10/0587", "inventive": true, "first": false, "tree": "[]"}, {"code": "Y10T29/49108", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01M10/0431", "inventive": true, "first": true, "tree": "[]"}, {"code": "Y10T29/4911", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01M10/0587", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M10/0404", "inventive": true, "first": false, "tree": "[]"}, {"code": "Y02P70/50", "inventive": false, "first": false, "tree": "[]"}, {"code": "Y02E60/10", "inventive": false, "first": false, "tree": "[]"}]
Family ID: 44309181