PATENT DOCUMENT

Publication Number: US-10541391-B2
Application Number: US-201615267353-A
Country: US
Kind Code: B2

Title: Electrical feedthroughs for battery housings

Abstract:
Electrical feedthroughs for battery housings are presented. The electrical feedthroughs include a connector, a ceramic insulator, and a terminal. A first seal couples the connector to the ceramic insulator via a first braze alloy. A second seal couples the ceramic insulator to the terminal via a second braze alloy. The electrical feedthroughs can also include a spacer. A first seal couples the connector to the ceramic insulator; a second seal couples the ceramic insulator to the spacer; and the third seal couples the spacer to the terminal. The first seal, the second seal, and the third seal include, respectively, a first braze alloy, a second braze alloy, and a third braze alloy.

Claims:
What is claimed is: 
     
       1. An electrical feedthrough, comprising:
 a ceramic insulator; 
 a connector for coupling the ceramic insulator to a housing;
 wherein the connector comprises a cylindrical body with a central opening for receiving the ceramic insulator, the connector further comprising a lip surrounding the cylindrical body, the lip comprising an inner surface for bonding to the housing; 
 wherein the housing has a thickness that is less than a thickness of the connector; 
 
 a terminal disposed within the ceramic insulator; 
 a first seal coupling the ceramic insulator to the connector, the first seal formed of a first braze alloy capable of bonding the ceramic insulator and the connector; and 
 a second seal coupling the ceramic insulator to the terminal, the second seal formed of a second braze alloy capable of bonding the ceramic insulator and the terminal. 
 
     
     
       2. The electrical feedthrough of  claim 1 , wherein the terminal comprises a material selected from stainless steel and aluminum. 
     
     
       3. The electrical feedthrough of  claim 2 , wherein the terminal comprises aluminum. 
     
     
       4. The electrical feedthrough of  claim 1 , wherein the connector comprises a material selected from stainless steel and aluminum. 
     
     
       5. The electrical feedthrough of  claim 1 , wherein the first braze alloy is selected from a silver alloy and a gold alloy. 
     
     
       6. The electrical feedthrough of  claim 1 , wherein the second braze alloy is selected from the group consisting of an aluminum alloy and a gold alloy. 
     
     
       7. The electrical feedthrough of  claim 3 , wherein the second braze alloy is an aluminum alloy.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of U.S. Provisional Application Ser. No. 62/235,083, filed Sep. 30, 2015, and entitled “ELECTRICAL FEEDTHROUGHS FOR BATTERY HOUSINGS”, which is incorporated herein by reference in its entirety. 
    
    
     FIELD 
     This disclosure relates generally to electrical feedthroughs, and more particularly, to electrical feedthroughs for battery housings. 
     BACKGROUND 
     Thin-walled bodies are often used to house batteries owing to their reduced weight. Such reduced weight is particularly desirable in applications involving portable electronics. Electrical feedthroughs are commonly incorporated into thin-walled bodies to provide access to internal battery components. Improvements in such feedthroughs, however, are desired by the battery industry. 
     SUMMARY 
     The embodiments described herein relate to electrical feedthroughs for battery housings. In one embodiment, the electrical feedthroughs include a ceramic insulator and a connector for coupling the ceramic insulator to a housing. The electrical feedthroughs also include a terminal disposed within the ceramic insulator. A first seal couples the ceramic insulator to the connector and is formed from a first braze alloy capable of bonding the ceramic insulator and the connector. The electrical feedthroughs additionally include a second seal coupling the ceramic insulator to the terminal. The second seal is formed from a second braze alloy capable of bonding the ceramic insulator and the terminal. 
     In another embodiment, the electrical feedthroughs involve a plurality of brazed seals. The electrical feedthroughs include a ceramic insulator and a connector for coupling the ceramic insulator to a housing. The electrical feedthroughs also include a terminal disposed within the ceramic insulator. A spacer is disposed between the ceramic insulator and the terminal. The electrical feedthroughs additionally include a first seal coupling the ceramic insulator to the connector. The first seal is formed from a first braze alloy capable of bonding the ceramic insulator and the connector. The electrical feedthroughs also include a second seal coupling the ceramic insulator to the spacer. The second seal is formed from a second braze alloy capable of bonding the ceramic insulator and the spacer. The electrical feedthroughs further include a third seal coupling the terminal to the spacer. The third seal is formed from a third braze alloy capable of bonding the terminal and the spacer. 
     In an additional embodiment, the electrical feedthroughs involve a glass seal for electrical insulation. The electrical feedthroughs include a connector for coupling to a housing. A terminal is disposed in the connector and formed of a metal selected from the group consisting of titanium, molybdenum, tungsten, and an iron-nickel-cobalt alloy. A seal glass couples the connector to the terminal pin, thereby forming the glass seal. The seal glass includes a boroaluminate glass. 
     Other electrical feedthroughs are presented. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements, and in which: 
         FIG. 1  is a cross-sectional view of an electrical feedthrough, according to an illustrative embodiment; 
         FIG. 2  is a cross-sectional view of an electrical feedthrough having a plurality of brazed seals, according to an illustrative embodiment; and 
         FIG. 3  is a cross-sectional view of an electrical feedthrough having a glass seal for electrical insulation, according to an illustrative embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made in detail to representative embodiments illustrated in the accompanying drawings. It should be understood that the following descriptions are not intended to limit the embodiments to one preferred embodiment. To the contrary, it is intended to cover alternatives, modifications, and equivalents as can be included within the spirit and scope of the described embodiments as defined by the appended claims. 
     Referring to  FIG. 1 , a cross-sectional view is presented of an electrical feedthrough  100 , according to an illustrative embodiment. The electrical feedthrough  100  includes a ceramic insulator  102  that may be crystalline, amorphous, or a combination thereof. Non-limiting examples of the ceramic insulator  102  include an aluminum oxide material, (e.g., Al 2 O 3 ), a silicon oxide material (e.g., SiO 2 ), an aluminum silicon oxide material (e.g., 3Al 2 O 3 .2SiO 2 ), a silicon nitride material (e.g., Si 3 N 4 ), a titanium oxide material (e.g., TiO 2 ), and a zirconium oxide material (e.g., ZrO 2 ). Other materials for the ceramic insulator  102  are possible. In some embodiments, the ceramic insulator  102  includes an aluminum oxide material. In some embodiments, the ceramic insulator exhibits a resistivity greater than 10 9  Ω-cm. In some embodiments, such as that shown in  FIG. 1 , the ceramic insulator  102  is formed as a sleeve. 
     The electrical feedthrough  100  also includes a connector  104  for coupling the ceramic insulator  102  to a housing  106 . In some embodiments, the connector  104  can be shaped to mate with an orifice that traverses the housing  106 . Such mating may be assisted by bonding (e.g., soldering, brazing, welding, epoxying, etc.) that hermetically seals the connector  104  to the housing  106 . The connector  104  may allow the ceramic insulator  102  to be disposed therein (e.g., formed as a ferrule). In some embodiments, the connector  104  is formed of a stainless steel. In further embodiments, the stainless steel is selected from the group consisting of stainless steel 304, stainless steel 316, a stainless steel 316L, or other 300 series stainless steel. In other embodiments, the connector may be formed of an aluminum. In some embodiments, the connector  104  is coupled to the housing  106 . 
       FIG. 1  depicts the housing  106  as a shell, although this depiction is not intended as limiting. In embodiments where the housing  106  is a shell, the shell may be a stainless steel shell. In further embodiments, the housing  106  contains a battery therein. 
     A first seal  108  couples the ceramic insulator  102  to the connector  104 . The first seal includes a first braze alloy capable of bonding the ceramic insulator  102  to the connector  104 . This coupling may involve a hermetic seal between the ceramic insulator  102  to the connector  104 . In some embodiments, the first braze alloy is selected from the group consisting of silver alloys and gold alloys. In further embodiments, the first braze alloy incorporates alloying elements that, in total, do not exceed 50 weight percent. For example, and without limitation, the first alloy may be Ag 72 Cu 28  (i.e., silver alloys). In another non-limiting example, the first alloy may be Au 80 Sn 20  (i.e., gold alloys). Moreover, the silver alloys and the gold alloys are not restricted to alloying elements of, respectively, Cu and Sn. Other alloying elements are possible, including combinations thereof. The alloying elements may enhance a wettability of the first braze alloy to the ceramic insulator  102 , the connector  104 , or both, during brazing (i.e., during formation of the first seal  108 ). 
     The electrical feedthrough  100  also includes a terminal  110  disposed in ceramic insulator  102  via a sleeve hole  114 . In  FIG. 1 , the terminal  110  is depicted as a cylindrically-symmetric pin. However, this depiction is for purposes of illustration only. Other shapes are possible for the terminal  110 . In some embodiments, the terminal  110  includes aluminum, which may be a pure metal or an alloy (e.g., aluminum  1100 ). The terminal  110  is shaped to allow coupling to the ceramic insulator  102  via brazing. By incorporating aluminum, the terminal  110  may exhibit a ductility that can accommodate differentials in thermal expansion during brazing (i.e., differentials in thermal expansion between the terminal  110  and the ceramic insulator  102 ). In other embodiments, the terminal is formed of a stainless steel. In further embodiments, the stainless steel is selected from the group consisting of stainless steel 304, stainless steel 316, a stainless steel 316L, or other 300 series stainless steel. In some embodiments where the connector  104  is coupled to the housing  106  and a battery is contained in the housing  106 , the terminal  110  may be electrically connected to the battery. 
     A second seal  112  couples the ceramic insulator  102  to the terminal  110 . This coupling may seal the ceramic insulator  102  to the terminal  110  hermetically. The second seal  112  is formed from a second braze alloy capable of bonding the ceramic insulator  102  and the terminal  110 . The second braze alloy may be selected from the group consisting of an aluminum alloy and a gold alloy. For instances where the second braze alloy is the aluminum alloy, the second braze alloy may incorporate alloying elements that may, in total, range between 5-50 weight percent of the aluminum alloy (e.g., Al 88 Si 12 ). However, other ranges are possible. Non-limiting examples of alloying elements for the aluminum alloy include silicon and germanium. For instances where the second braze alloy is the gold alloy, the second braze alloy may incorporate alloying elements that, in total, do not exceed 50 weight percent. For example, and without limitation, the second alloy may be a gold-tin alloy with tin accounting for less than 50 weight percent (e.g., Au 80 Sn 20 ). Other alloying elements, however, are possible for the gold alloy. 
     With further reference to  FIG. 1 , in various embodiments, both second seal  112  and terminal  110  can be formed of alloys having similar bonding temperatures. Without wishing to be limited to a particular theory or mode of action, similar bonding temperatures in second seal  112  and terminal  110  can facilitate bonding of second seal  112  to terminal  110 . For example, the bonding temperatures of second seal  112  and terminal  110  can be within 10° C., 20° C., 30° C., 40° C., or 50° C. of each other. Similar bonding temperatures can be found where alloys have the same or similar alloy composition. 
     In some aspects, both second seal  112  and terminal  110  can be formed of an alloy with the same primary metal component (e.g., aluminum or silver). For example, second seal  112  can both be formed of aluminum alloys. In various additional aspects, second seal  112  can be formed of the same alloy composition as terminal  110 . For example, second seal  112  and terminal  110  can both be formed of the same aluminum alloy. 
     Likewise, first seal  108  and connector  104  can be made of alloys with similar bonding temperatures. In some variations, first seal  108  and connector  104  can be made of alloys with the same primary metal component (e.g., aluminum or silver). In some instances, first seal  108  and connector  104  can be made of the same alloy (e.g., the same aluminum alloy). 
     In  FIG. 1 , the electrical feedthrough  100  is depicted as having the connector  104 , the ceramic insulator  102 , and the terminal  110  in a nested configuration. However, this depiction is not intended as limiting. Other configurations are possible. 
     In some embodiments, a nickel layer may coat the connector  104 , the terminal  110 , or both. This coating may be in whole or in part. In further embodiments, a gold layer is disposed on the nickel layer. The gold layer may be disposed over the entire nickel layer or portions thereof. 
     It will be appreciated that the electrical feedthrough  100  may utilize a first configuration where the connector  104  includes the stainless steel and the terminal  110  includes aluminum or a second configuration where the connector  104  includes aluminum and the terminal  110  includes the stainless steel. In the second configuration, the first seal  108  is formed from the second braze alloy and the second seal  112  is formed from the first braze alloy. Thus, a configuration of materials in the electrical feedthrough  100  is reversible. In  FIG. 1 , the electrical feedthrough  100  corresponds to the first configuration and the associated disclosure relates to this configuration. 
     In operation, a first surface of the terminal  110  and a second surface opposite the first surface of the terminal  110  are electrically coupled to, respectively, a current source and a current sink, or vice versa. A voltage gradient between the current source and the current sink induces electrical current to flow through the terminal  110 . The terminal  110  is coupled to the connector  104  via the ceramic insulator  102 , the first seal  108 , and the second seal  112 . However, despite this coupling, the ceramic insulator  102  electrically isolates the terminal  110  from the connector  104 . Electrical current is therefore constrained to flow through the terminal  110 , which is electrically-conductive. It will be appreciated that the connector  104  can be configured to allow incorporation of the electrical feedthrough  100  into thin-walled bodies or shells, such as that depicted in  FIG. 1 . Such thin-walled bodies or shells may be applicable to batteries where low weight is desired. A thin-walled body means that the ratio of the body&#39;s thickness to the diameter of the orifice that traverses the housing  106  is 1:10 or less. 
     Referring now to  FIG. 2 , a cross-sectional view is presented of an electrical feedthrough  200  having a plurality of brazed seals, according to an illustrative embodiment. The electrical feedthrough  200  includes a ceramic insulator  202  that may be crystalline, amorphous, or a combination thereof. Non-limiting examples of the ceramic insulator  202  include an aluminum oxide material, (e.g., Al 2 O 3 ), a silicon oxide material (e.g., SiO 2 ), an aluminum silicon oxide material (e.g., 3Al 2 O 3 .2SiO 2 ), a silicon nitride material (e.g., Si 3 N 4 ), a titanium oxide material (e.g., TiO 2 ), and a zirconium oxide material (e.g., ZrO 2 ). Other materials for the ceramic insulator  202  are possible. In some embodiments, the ceramic insulator  202  includes an aluminum oxide material. In some embodiments, the ceramic insulator exhibits a resistivity greater than 10 9  Ω-cm. In some embodiments, such as that shown in  FIG. 2 , the ceramic insulator  202  is formed as a sleeve. 
     The electrical feedthrough  200  also includes a connector  204  for coupling the ceramic insulator  202  to a housing  206 . The connector  204 , which may be formed of an iron-nickel-cobalt alloy (e.g., Kovar), is shaped to mate with an orifice that traverses the housing  206 . Such mating may be assisted by bonding (e.g., soldering, brazing, welding, epoxying, etc.) that hermetically seals the insulator  202  to the body wall. The connector  204  may allow the ceramic insulator  202  to be disposed therein (e.g., formed as a ferrule). In some embodiments, the connector  204  is coupled to the housing  206 .  FIG. 2  depicts the housing  206  as a shell, although this depiction is not intended as limiting. In embodiments where the housing  206  is a shell, the shell may be a stainless steel shell. In other embodiments, the housing  206  may be an aluminum shell. In further embodiments, the housing  206  contains a battery therein. 
     The electrical feedthrough  200  additionally includes a terminal  208  disposed within the ceramic insulator  202 . In  FIG. 2 , the terminal  208  is depicted as a cylindrically-symmetric pin. However, this depiction is for purposes of illustration only. Other shapes are possible for the terminal  208 . In some embodiments, the terminal  208  includes aluminum, which may be a pure metal or an alloy (e.g., aluminum  1100 ). In these embodiments, by incorporating aluminum, the terminal  208  may exhibit a ductility that can accommodate differentials in thermal expansion during brazing. In embodiments where the connector  204  is coupled to the housing  206  and the housing  206  contains the battery therein, the terminal  208  may be electrically-coupled to a cathode of the battery. 
     The electrical feedthrough  200  also includes a spacer  210  disposed between the ceramic insulator  202  and the terminal  208 . The terminal  208  traverses the spacer  210 , or a portion thereof, to become disposed within the ceramic insulator  202 . The spacer  210  may have a spacer hole therethrough. The spacer  210  serves to enable a joint that spans the ceramic insulator  202  and the terminal  208 . In some embodiments, the spacer  210  is formed of an iron-cobalt-nickel alloy (e.g., Kovar). In further embodiments, the connector  204  is coupled to the housing  206  and the housing  206  contains the battery therein. In these embodiments, the terminal  208  is electrically-coupled to the cathode of the battery 
     A first seal  212  couples the ceramic insulator  202  to the connector  204  and is formed from a first braze alloy capable of bonding the ceramic insulator  202  and the connector  204 . This coupling may involve a hermetic seal between the ceramic insulator  202  to the connector  204 . Similarly, a second seal  214  couples the ceramic insulator  202  to the spacer  210  and is formed from a second braze alloy capable of bonding the ceramic insulator  202  and the spacer  210 . The second seal  214  may hermetically couple the ceramic insulator  202  to the spacer  210 . Moreover, a third seal  216  couples the terminal  208  to the spacer  210  and is formed from a third braze alloy capable of bonding the terminal  208  and the spacer  210 . Such coupling may seal the terminal  208  to the spacer  210  hermetically. It will be appreciated that the spacer  210  acts as a transition piece between the terminal  208  and the insulator  202 . In this capacity, the spacer  210  may accommodate differences in thermal expansion during brazing by offering an intermediate thermal expansion between the ceramic insulator  202  and the terminal  208  (e.g., to prevent cracks, tearing, etc.). 
     In some embodiments, the first braze alloy, the second braze alloy, and the third braze alloy include a gold alloy. In these embodiments, the gold alloy incorporates alloying elements that, in total, do not exceed 50 weight percent. For example, and without limitation, the gold alloy may incorporate tin in an amount less than 50 weight percent (e.g., Au 80 Sn 20 ). However, other alloying elements are possible, including combinations thereof. The alloying elements of the gold alloy may enhance, during brazing, a wettability of the gold alloy to the insulator  202 , the connector  204 , the spacer  210 , the terminal  208 , or combinations thereof. It will be understood that the first braze alloy, the second braze alloy, and the third braze alloy are not restricted to a common composition of the gold alloy. In further embodiments, the spacer  210  is formed of an iron-cobalt-nickel alloy (e.g., Kovar). 
     In some embodiments, a nickel layer may coat the connector  204 , the terminal  208 , the spacer  210 , or combinations thereof. This coating may be in whole or in part. In further embodiments, a gold layer is disposed over the nickel layer. The gold layer may be disposed over the entire nickel layer or portions thereof. 
     In operation, a first surface of the terminal  208  and a second surface opposite the first surface of the terminal  208  are electrically coupled to, respectively, a current source and a current sink, or vice versa. A voltage gradient between the current source and the current sink induces electrical current to flow through the terminal  208 . The terminal  208  is coupled to the connector  204  via the spacer  210 , the ceramic insulator  202 , the first seal  212 , the second seal  214 , and the third seal  216 . However, despite this coupling, the ceramic insulator  202  electrically isolates the terminal  208  from the connector  204 . Electrical current is therefore constrained to flow through the terminal  208 , which is electrically conductive. It will be appreciated that the connector  204  can be configured to allow incorporation of the electrical feedthrough  200  into thin-walled bodies or shells, such as that depicted in  FIG. 2 . Such thin-walled bodies or shells may be applicable to batteries where low weight is desired. 
     Now referring to  FIG. 3 , a cross-sectional view is presented of an electrical feedthrough  300  having a glass seal  302  for electrical insulation, according to an illustrative embodiment. The electrical feedthrough  300  includes a connector  304  for coupling to a housing  306 . The connector  304  is shaped to mate with an orifice that traverses the housing  306 . Such mating may be assisted by bonding (e.g., soldering, brazing, welding, epoxying, etc.) that hermetically seals the connector  304  to the housing  306 . The connector  304  may include throughhole (e.g., formed as a ferrule) although other geometries are possible. In some embodiments, the connector  304  is formed of a stainless steel. In further embodiments, the stainless steel is selected from the group consisting of stainless steel 304, stainless steel 316, and stainless steel 316L. In some embodiments, the connector  304  is coupled to the housing  306 .  FIG. 3  depicts the housing  306  as a shell, although this depiction is not intended as limiting. In embodiments where the housing  306  is a shell, the shell may be a stainless steel shell. In further embodiments, the housing  306  contains a battery therein. 
     The electrical feedthrough  300  also includes a terminal  308  disposed in the connector  304  and formed of a metal selected from the group consisting of titanium, molybdenum, tungsten, and an iron-nickel-cobalt alloy (e.g., Kovar). The terminal  308  is shaped to allow coupling to the connector  304  via the glass seal  302 . In embodiments where the connector  304  is coupled to the housing  306  and the housing  306  contains the battery therein, the terminal  308  may be electrically-coupled to a cathode of the battery. 
     The electrical feedthrough  300  additionally includes a seal  310  coupling the connector  304  to the terminal  308 . The seal  310  bridges a gap between the connector  304  and the terminal pin  308  to form the glass seal  302 , which may be a hermetic seal. The seal  310  includes a boroaluminate glass that incorporates a boron oxide material (e.g., B 2 O 3 ) and an aluminum oxide material (e.g., Al 2 O 3 ). For example, and without limitation, the boroaluminate glass may contain 35-45 weight percent of boron oxide and 25-35 weight percent of aluminum oxide. In another non-limiting embodiment, the boroaluminate glass may contain 30-50 weight percent of boron oxide and 10-25 weight percent of aluminum oxide. Other weight percents for the boroaluminate glass are possible. The boroaluminate glass also incorporates complementary oxide materials, whether individually or in combination, such that a total weight percent sums to 100 weight percent. Such complementary oxide materials include magnesium oxide, calcium oxide, strontium oxide, barium oxide, titanium oxide, zirconium oxide, molybdenum oxide, tungsten oxide, iron oxide, nickel oxide, and cobalt oxide. Other oxide materials are possible. In general, the boroaluminate glass is an amorphous insulator and may exhibit a resistivity greater than 10 9  Ω-cm. In some embodiments, the boroaluminate glass includes barium oxide. In such embodiments, the boroaluminate glass may be a BaBAl-1 glass. In some embodiments, the boroaluminate glass includes calcium oxide. In these embodiments, the boroaluminate glass may be a CaBAl-12 glass. 
     In operation, a first surface of the terminal  308  and a second surface opposite the first surface of the terminal  308  are electrically coupled to, respectively, a current source and a current sink, or vice versa. A voltage gradient between the current source and the current sink induces electrical current to flow through the terminal  308 . Such electrical current flows along the voltage gradient from higher voltage to lower voltage. The terminal pin  308  is coupled to the connector  304  via the glass seal  302 . However, despite this coupling, the glass sea;  302 , being an amorphous insulator, electrically isolates the terminal  308  from the connector  304 . Electrical current is therefore constrained to flow through the terminal  308 , which is electrically conductive. It will be appreciated that the connector  304  can be configured to allow incorporation of the electrical feedthrough  300  into thin-walled bodies or shells, such as that depicted in  FIG. 3 . Such thin-walled bodies or shells may be applicable to batteries where low weight is desired. 
     The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the described embodiments. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the described embodiments. Thus, the foregoing descriptions of the specific embodiments described herein are presented for purposes of illustration and description. They are not target to be exhaustive or to limit the embodiments to the precise forms disclosed. It will be apparent to one of ordinary skill in the art that many modifications and variations are possible in view of the above teachings.

Metadata:
Filing Date: 20160916
Publication Date: 20200121
Grant Date: 20200121
Priority Date: 20150930
Inventors: HYUNG, YOOEUP
SANTINI, VICTOR W.
Assignee: APPLE INC
CPC Classifications: [{"code": "H01M2/065", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01M2/30", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/566", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/552", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/562", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/566", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/562", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/552", "inventive": true, "first": false, "tree": "[]"}, {"code": "Y02E60/10", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01M50/186", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/191", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01R13/521", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01M50/191", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01M50/186", "inventive": true, "first": true, "tree": "[]"}, {"code": "Y02E60/10", "inventive": false, "first": false, "tree": "[]"}]
Family ID: 58406789