Battery array housing design

Abstract

The present disclosure provides a "battery array housing design". An array housing design for a battery array of a traction battery pack is disclosed. An exemplary battery array may include an array housing having a rib-like structure including at least one rib (e.g., an outer rib and / or an inner rib) configured to increase the structural stiffness of the battery array. A recess may extend at least partially through the rib, and an adhesive / sealant may be disposed within the recess for securing the surrounding structure relative to the array housing to structurally integrate the battery array. In some embodiments, the grooves may receive fins of a thermal barrier assembly of a battery cell stack of a battery array.

Description

Technical Field

[0001] This disclosure generally relates to traction battery packs for electrified vehicles, and more specifically to array housing designs for providing structurally integrated battery arrays. Background Technology

[0002] Electrified vehicles include a traction battery pack that powers the vehicle's motor and other electrical loads. The traction battery pack comprises multiple battery cells and various other internal battery components that support the propulsion of the electric vehicle. Summary of the Invention

[0003] A battery array for a traction battery pack according to an exemplary aspect of this disclosure particularly includes: an array housing including ribs; and a cell stack housed within the array housing and including a first group of battery cells, a second group of battery cells, and a thermal barrier assembly disposed between the first group of battery cells and the second group of battery cells. A recess extends at least partially through the ribs. Fins of the thermal barrier assembly are received within the recess, and an adhesive / sealant secures the fins within the recess.

[0004] In another non-limiting embodiment of the aforementioned battery array, the rib is an external rib.

[0005] In another non-limiting embodiment of any of the aforementioned battery arrays, the rib is an internal rib.

[0006] In another non-limiting embodiment of any of the aforementioned battery arrays, the rib is part of the top cover of the array housing.

[0007] In another non-limiting embodiment of any of the aforementioned battery arrays, the rib is part of the bottom cover of the array housing.

[0008] In another non-limiting embodiment of any of the aforementioned battery arrays, the rib is part of the top cover of the array housing, and the second rib is part of the bottom cover of the array housing.

[0009] In another non-limiting embodiment of any of the aforementioned battery arrays, the second groove extends at least partially through the second rib, the second fin of the thermal barrier assembly is received within the second groove, and the second adhesive / sealant secures the second fin within the second groove.

[0010] In another non-limiting embodiment of any of the aforementioned battery arrays, the rib is an outer rib, and the inner rib is axially aligned with the outer rib.

[0011] In another non-limiting embodiment of any of the aforementioned battery arrays, the groove extends through the inner rib and at least partially into the outer rib.

[0012] In another non-limiting embodiment of any of the aforementioned battery arrays, the groove is axially aligned with the inner rib and the outer rib.

[0013] In another non-limiting embodiment of any of the aforementioned battery arrays, the thermal barrier assembly separates the first compartment containing the first group of battery cells from the second compartment containing the second group of battery cells.

[0014] In another non-limiting embodiment of any of the aforementioned battery arrays, the first compartment and the second compartment each establish a coolant flow channel within the battery array.

[0015] In another non-limiting embodiment of any of the aforementioned battery arrays, the thermal barrier assembly is a multilayer structure, the multilayer structure including the fins and at least one of a thermal resistance material layer or a foam layer.

[0016] In another non-limiting embodiment of any of the aforementioned battery arrays, the upper or lower portion of the fin extends above or below the first or second group of battery cells and is accommodated within the groove.

[0017] In another non-limiting embodiment of any of the aforementioned battery arrays, the array housing includes a second rib, and the cell stack includes a second thermal barrier assembly disposed between the second group of battery cells and the third group of battery cells. The battery array also includes a second groove extending at least partially through the second rib, a second fin of the second thermal barrier assembly being received within the second groove, and a second adhesive / sealant securing the second fin within the second groove.

[0018] A battery array for a traction battery pack according to another exemplary aspect of this disclosure particularly includes: an array housing including a first cover having external ribs and internal ribs; and a cell stack housed within the array housing and including a thermal barrier assembly disposed between a first battery cell and a second battery cell. A recess extends into the internal ribs and extends toward the external ribs. Fins of the thermal barrier assembly are received within the recess, and an adhesive / sealant secures the fins within the recess.

[0019] In another non-limiting embodiment of the aforementioned battery array, the first cover is a top cover.

[0020] In another non-limiting embodiment of any of the aforementioned battery arrays, the first cover is a bottom cover.

[0021] In another non-limiting embodiment of any of the aforementioned battery arrays, the groove extends at least partially into the outer rib.

[0022] In another non-limiting embodiment of any of the aforementioned battery arrays, the adhesive / sealant surrounds at least three sides of the fin.

[0023] The embodiments, examples, and alternatives (including any of their various aspects or corresponding features) described in the foregoing paragraphs, claims, or the following description and drawings may be used independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments unless such features are incompatible.

[0024] Various features and advantages of this disclosure will become apparent to those skilled in the art from the following detailed description. The accompanying drawings, which briefly describe the specific embodiments, are as follows. Attached Figure Description

[0025] Figure 1 An electric vehicle is shown schematically.

[0026] Figure 2 This is a perspective view of an exemplary battery array of a traction battery pack.

[0027] Figure 3 yes Figure 2 An exploded view of the battery array.

[0028] Figure 4 Is it through Figure 2 The cross-sectional view of section 4-4.

[0029] Figure 5 yes Figure 4 An enlarged view of a selected portion of the battery array shown.

[0030] Figure 6 yes Figure 4 An enlarged view of another selected portion of the battery array shown.

[0031] Figure 7 A portion of an exemplary array housing is shown.

[0032] Figure 8 A portion of another exemplary array housing is shown.

[0033] Figure 9 A portion of yet another exemplary array housing is shown.

[0034] Figure 10The interface between the array housing of an exemplary battery array and the thermal barrier assembly is shown.

[0035] Figure 11 The interface between the array housing and the thermal barrier assembly of another exemplary battery array is shown.

[0036] Figure 12 The interface between the array housing and the thermal barrier assembly of another exemplary battery array is shown.

[0037] Figure 13 The interface between the array housing and the thermal barrier assembly of yet another exemplary battery array is shown. Detailed Implementation

[0038] This disclosure details an array housing design for a battery array used in a traction battery pack. An exemplary battery array may include an array housing with a ribbed structure, the ribbed structure including at least one rib (e.g., an external rib and / or an internal rib) configured to increase the structural stiffness of the battery array. Grooves may extend at least partially through the ribs, and adhesives / sealants may be disposed within the grooves to secure the surrounding structure relative to the array housing, thereby structurally integrating the battery array. In some embodiments, the grooves may receive fins of the thermal barrier assembly of the battery cell stack of the battery array. These and other features are discussed in more detail in the following paragraphs of this detailed description.

[0039] Figure 1 An electrified vehicle 10 is schematically illustrated. The electrified vehicle 10 may include any type of electrified powertrain. In this embodiment, the electrified vehicle 10 is a battery electric vehicle (BEV). However, the concepts described herein are not limited to BEVs and can be extended to other electrified vehicles, including but not limited to hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), fuel cell vehicles, etc. Therefore, although not specifically shown in the exemplary embodiments, the powertrain of the electrified vehicle 10 may be equipped with an internal combustion engine, which may be used alone or in combination with other power sources to propel the electrified vehicle 10.

[0040] In the illustrated embodiment, the electrified vehicle 10 is depicted as an automobile. However, the electrified vehicle 10 may alternatively be a sports utility vehicle (SUV), van, pickup truck, or any other vehicle configuration. Although specific component relationships are shown in the accompanying drawings of this disclosure, the illustrations are not intended to limit the scope of this disclosure. The placement and orientation of the various components of the electrified vehicle 10 are schematically shown and may vary within the scope of this disclosure. Furthermore, the various drawings accompanying this disclosure are not necessarily drawn to scale, and some features may be enlarged or minimized to emphasize certain details of particular components or systems.

[0041] In the illustrated embodiment, the electrified vehicle 10 is a purely electric vehicle propelled solely by electricity (such as by one or more motors 12) without the assistance of an internal combustion engine. The motor 12 may operate as an electric motor, a generator, or both. The motor 12 receives electricity and may convert the electricity into torque for driving one or more wheels 14 of the electrified vehicle 10.

[0042] Voltage bus 16 can electrically connect motor 12 to traction battery pack 18. Traction battery pack 18 is an exemplary electric vehicle battery. Traction battery pack 18 can be a high-voltage traction battery pack assembly including multiple battery cells capable of outputting power to supply motor 12 and / or other electrical loads of electric vehicle 10. Other types of energy storage devices and / or output devices may alternatively or additionally be used to supply power to electric vehicle 10.

[0043] The traction battery pack 18 can be fixed to the bottom 20 of the electric vehicle 10. However, within the scope of this disclosure, the traction battery pack 18 can be located elsewhere on the electric vehicle 10.

[0044] The traction battery pack 18 may include one or more battery arrays 22 (e.g., battery modules, assemblies, or groups of rechargeable battery cells 24) capable of outputting power to supply the motor 12 and / or other electrical loads of the electrified vehicle 10. Each of the one or more battery arrays 22 of the traction battery pack 18 may each include a plurality of battery cells 24 that store energy for supplying power to the various electrical loads of the electrified vehicle 10. Within the scope of this disclosure, the traction battery pack 18 may employ any number of battery arrays 22 and battery cells 24. Therefore, this disclosure should not be limited to... Figure 1 The height is shown as a schematic configuration.

[0045] In this embodiment, the battery cell 24 of each battery array 22 is a lithium-ion pouch cell. However, battery cells having other geometries (cylindrical, prismatic, etc.), other chemical substances (nickel-metal hydride, lead acid, etc.), or both may be used alternatively within the scope of this disclosure.

[0046] Battery array 22 and various other battery internal components (e.g., bus electrical hub, battery electrical control module, wiring, connectors, etc.) can be housed within internal region 26 of housing assembly 28. Housing assembly 28 may include, for example, a housing cover and a housing tray. The housing cover may be secured (e.g., bolted, welded, glued, etc.) to the housing tray to provide internal region 26. The size, shape, and overall configuration of housing assembly 28 are not intended to limit this disclosure.

[0047] Figures 2 to 6Features associated with the battery array 22 used for the traction battery pack are shown. For example, Figure 1 The traction battery pack 18 of the electrified vehicle 10 may include a battery pack having substantially similar characteristics to... Figures 2 to 6 The design of the battery array 22 shown is one or more battery arrays.

[0048] The battery array 22 may include one or more cell stacks 30 housed within an array housing 32. The array housing 32 may include a top cover 34 and a bottom cover 36, both of which may have a tray-like structure. The top cover 34 may be vertically positioned above the bottom cover 36. Various terms such as “above,” “below,” “top,” and “bottom” are used in the various figures relative to the arrangement of components of the traction battery pack 18 and should not be considered limiting in any other way. These terms are for reference only when the traction battery pack 18 is installed... Figure 1 The general orientation of the electric vehicle 10. For the purposes of this disclosure, verticality is also referenced to the ground and how the traction battery pack 18 is oriented when mounted on the electric vehicle 10.

[0049] The top cover 34 can be secured (e.g., bolted, welded, adhered, etc.) to the bottom cover 36 to provide a sealed housing for receiving the cell stack 30. Within the scope of this disclosure, the size, shape, and configuration of the array housing 32 can vary.

[0050] The cell stack 30 may include a plurality of individual battery cells 24 arranged longitudinally between opposing end plates 38. The battery cells 24 may be arranged together between opposing end plates 38 along the cell stack axis A. Although a single cell stack 30 with a specific number of battery cells 24 is shown in the accompanying drawings of this disclosure, the battery array 22 may include any number of cell stacks 30, each cell stack 30 having any number of individual battery cells 24.

[0051] The thermal energy level of the battery cells 24 in the battery array 22 can increase as the electrified vehicle 10 operates. A thermal management system can be used to manage the thermal energy level of the battery cells 24 in the battery array 22. The thermal management system can be configured to guide coolant C through the battery array 22 in order to manage the thermal energy within the battery array 22 by, for example, absorbing heat from the battery cells 24 of the battery pack 30 using coolant C.

[0052] In one embodiment, the thermal management system is an immersion thermal management system, wherein a portion of the cell stack 30 (here, at least a portion of the battery cells 24) may be immersed in a coolant C. Thermal energy can be transferred between the coolant C and the battery cells 24 as the coolant C flows above and / or around the battery cells 24 within the array housing 32. The coolant C helps manage the thermal levels of the battery cells 24 and other components of the battery array 22.

[0053] The thermal management system can be accessed through the inlet 50 of the array housing 32 (see...). Figure 3 The coolant C is delivered to the internal region of the battery array 22. The coolant C can fill one or more open areas within the battery array 22 (e.g., see...). Figures 4 to 6 The array housing 32 contains a compartment 44, which allows the battery cell 24 to be immersed in and in direct contact with the coolant C. The coolant C can absorb heat from the battery cell 24 to manage the heat level. The coolant C can be discharged through an outlet 52 of the array housing 32 (see [link to array housing 32]). Figures 2 to 3 The inlet 50 and outlet 52 exit the battery array 22. In one embodiment, both the inlet 50 and outlet 52 are formed through the bottom cover 36 of the array housing 32. However, other locations for the inlet 50 and / or outlet 52 are contemplated within the scope of this disclosure.

[0054] Coolant C exiting through outlet 52 can move to a heat exchange device (not shown), such as a heat exchanger, where heat can be transferred from coolant C to the atmosphere. As part of a closed-loop system, a pump (not shown) can be operated to selectively circulate coolant C between battery array 22 and the heat exchange device, and then back to battery array 22.

[0055] The coolant C circulating in the immersion thermal management system can be a dielectric fluid designed for immersion cooling of the battery cell 24 or another type of non-conductive fluid (e.g., oil). However, other non-conductive fluids may also be suitable, and the actual chemical composition and design characteristics (e.g., dielectric constant, maximum breakdown strength, boiling point, thermal conductivity, etc.) may vary depending on the environment in which the battery array 22 is to be employed.

[0056] In another embodiment, the thermal management system is a conventional cold plate system, wherein a coolant C (such as ethylene glycol) circulates through a cold plate (not shown) to thermally manage the heat generated by the battery cell 24. Therefore, the teachings of this disclosure are not limited to battery arrays having an immersion thermal management system. In some embodiments, in a cold plate type thermal management system, the battery cell 24 is not immersed in the coolant C.

[0057] Cell expansion pad 40 (in) Figures 4 to 6 (Best shown in the diagram) can be arranged between adjacent battery cells 24 within the cell stack 30. The cell expansion pad 40 may include a material suitable for accommodating the expansion of the battery cells (e.g., polyurethane foam, silicone foam, etc.).

[0058] Currently, the main reference is... Figures 4 to 6 And continue to refer to Figures 2 to 3One or more thermal barrier assemblies 42 may be arranged along the respective cell stack axis A of the cell stack 30. The thermal barrier assemblies 42 may divide the cell stack 30 into two or more groups or compartments 44. Each thermal barrier assembly 42 may be used to suppress the transfer of thermal energy across the cell stack 30 from compartment 44 to its adjacent compartment 44.

[0059] Each compartment 44 can hold one or more of the battery cells 24 of the cell stack 30. The compartment 44 can also be provided with a dedicated coolant flow channel for guiding the coolant C through the battery array 22 as part of the aforementioned immersion thermal management system.

[0060] In one embodiment, a group of two individual battery cells 24 is separated by a thermal barrier assembly 42 along the cell stack axis A of the cell stack 30. However, other configurations are contemplated within the scope of this disclosure, and it will be apparent to those skilled in the art that the cell stack 30 may include any number and arrangement of battery cells 24, cell expansion pads 40, and thermal barrier assemblies 42.

[0061] Each thermal barrier assembly 42 may include fins 46, the sides of which are additional layers, such as foam and / or thermally resistive material layers, as part of a multilayer structure of the thermal barrier assembly 42. In one embodiment, the fins 46 are sandwiched between a pair of thermally resistive material layers 54, and a pair of foam layers 56 may be positioned outside the thermally resistive material layers 54. Thus, the foam layers 56 may be located on the sides of the thermally resistive material layers 54 and may be positioned to be in abutment contact with the main side surface of the battery cell 24 located in the adjacent compartment 44 of the cell stack 30.

[0062] The fin 46 may be a metallic structure of the thermal barrier assembly 42. In one embodiment, the fin 46 is made of stainless steel. In another embodiment, the fin 46 is made of aluminum. However, within the scope of this disclosure, other materials, including but not limited to high-temperature resistant thermoplastic and thermosetting composite materials, may be used to construct each fin 46.

[0063] The thermal barrier material layer 54 may include, for example, an aerogel layer or mica sheet, and the foam layer 56 may include, for example, polyurethane foam or silicone foam. However, within the scope of this disclosure, other materials or combinations of materials may be used to construct the sublayer components of each thermal barrier assembly 42.

[0064] The array housing 32 may be ribbed to increase its structural stiffness and reduce displacement during impact and vibration. For example, the top cover 34, bottom cover 36, or both may include multiple ribs 58 to increase the structural stiffness of the array housing 32. The ribs 58 increase the thickness of the top cover 34 and / or bottom cover 36 of the array housing 32 at certain locations.

[0065] In one embodiment, the top cover 34 and / or the bottom cover 36 include both an outer rib 58E and an inner rib 58I (see example...). Figures 4 to 7 (Example). An external rib 58E may project outward from the outer wall 60 of the top cover 34 or the bottom cover 36, and an internal rib 58I may project inward from the inner wall 62 of the top cover 34 or the bottom cover 36. In another embodiment, the top cover 34 and / or the bottom cover 36 may include only the external rib 58E (e.g., see [example]). Figure 8 In yet another embodiment, the top cover 34 and / or the bottom cover 36 include only the internal ribs 58I (see, for example, see...). Figure 9 The total number, location, and arrangement of ribs 58 may depend on the structural stiffness requirements of the battery array 22 and other factors. Therefore, this disclosure is not intended to be limited to the specific designs shown in the various figures, and it should be understood that minor modifications may fall within the scope of this disclosure.

[0066] The top cover 34 and / or the bottom cover 36 may additionally include a plurality of recesses 64. The recesses 64 may be formed in the top cover 34 and / or the bottom cover 36 at the same locations as the increased thickness provided by the ribs 58E and / or 58I. In embodiments providing both external ribs 58E and internal ribs 58I (see, for example...) Figures 5 to 7 Each groove 64 may extend through one of the inner ribs 58I and may extend at least partially into the outer rib 58E which is axially aligned with the inner rib 58I. In embodiments where only the outer rib 58E is provided (e.g., see...), Figure 8 Each groove 64 may extend through the inner wall 62 and at least partially extend into one of the outer ribs 58E. In embodiments where only the inner ribs 58I are provided (e.g., see...), Figure 9 Each groove 64 may extend through one of the internal ribs 58I in the direction toward the outer wall 60.

[0067] Each recess 64 can provide an open space in the array housing 32 for accommodating a fin 46 of one of the thermal barrier assemblies 42 of the cell stack 30. For example, an upper portion 68 or a lower portion 70 of each fin 46 can be accommodated within each corresponding recess 64. The upper portion 68 extends above the battery cell 24 of the cell stack 30 (see example). Figure 5 The lower portion 70 extends below the battery cell 24 of the cell stack 30 (see example). Figure 6 Each of the upper portion 68 and the lower portion 70 may include a planar shape. In one embodiment, the planar shape is rectangular. The planar shape of the upper portion 68 / lower portion 70 provides lower peak stress than non-planar shapes, and therefore, when used in conjunction with the recess 64, it enables improved structural and thermal performance without reducing packaging efficiency.

[0068] The position and dimensions (e.g., width and depth) of the ribs 58 and the grooves 64 may depend on factors such as the gap distance between the array housing 32 and the battery cell 24, the structural and thermal performance requirements of the battery array 22, and the assembly and manufacturing feasibility of the battery array 22.

[0069] An adhesive / sealant 66 may be disposed within each groove 64 to structurally bond the fins 46 to the array housing 32, thereby increasing the structural integrity of the battery array 22. For example, the adhesive / sealant 66 may be an epoxy-based adhesive or a polyurethane-based adhesive. By bonding the fins 46 to the array housing 32 via the grooves 64 and the adhesive / sealant 66, the contact area between the array housing 32 and the fins 46 is increased, thereby reducing buckling of the fins 46 and increasing heat transfer between the array housing 32 and the thermal barrier assembly 42. Furthermore, the adhesive / sealant 66 is used to seal the compartments 44 to each other, thereby establishing dedicated coolant flow channels within the battery array 22 for immersion cooling.

[0070] At least in part due to the planar shape of the upper portion 68 / lower portion 70 of the fin 46, the adhesive / sealant 66 can contact each fin 46 along three surfaces (e.g., opposite sides and top or bottom). Therefore, the adhesive / sealant 66 will primarily bear shear forces (e.g., those acting in the vertical or Z-axis direction) rather than peeling forces (e.g., those acting in the horizontal or X-axis direction), which can maintain adhesion during impacts and vibrations.

[0071] Now for reference Figures 10 to 11 In some embodiments, the fins 46 of each thermal barrier assembly 42 may include shoulders 72, which are configured to form an inner wall 62 relative to the top cover 34 or bottom cover 36 of the array housing 32 (see...). Figure 10 ) or internal rib 58I (see Figure 11 The flat interface and locator. In other embodiments, shoulder 72 may be configured to interlock with recess 64 (see, for example...) Figure 12 In other embodiments, the shoulder 72 may be provided with a separate recess 74 for receiving the internal ribs 58I of the top cover 34 or the bottom cover 36 (see, for example...). Figure 13 ).

[0072] The exemplary battery array disclosed herein includes an array housing with a combination of rib and groove features that facilitate mating connections between the array housing and the thermal barrier assembly of the battery array's cell stack. The proposed design improves structural stiffness and integrity, heat transfer and packaging efficiency, and facilitates thermal management of the battery array using immersion cooling.

[0073] While different non-limiting embodiments are shown having specific components or steps, the embodiments disclosed herein are not limited to those particular combinations. Some of the components or features from any of the non-limiting embodiments may be used in combination with features or components from any of the other non-limiting embodiments.

[0074] It should be understood that the same reference numerals identify corresponding or similar elements throughout all the figures. It should be understood that although particular arrangements of components are disclosed and shown in these exemplary embodiments, other arrangements may also benefit from the teachings of this disclosure.

[0075] The foregoing description should be interpreted as illustrative and not restrictive. Those skilled in the art will understand that certain modifications may be made within the scope of this disclosure. For these reasons, the appended claims should be examined to determine the true scope and content of this disclosure.

Claims

1. A battery array for a traction battery pack, comprising: An array housing, the array housing including ribs; A battery cell stack, the battery cell stack being housed within the array housing and comprising a first group of battery cells, a second group of battery cells, and a thermal barrier assembly disposed between the first group of battery cells and the second group of battery cells; The groove extends at least partially through the rib; The thermal barrier assembly has fins that are received within the grooves. as well as An adhesive / sealant is used to secure the fins within the groove.

2. The battery array according to claim 1, wherein the rib is an external rib or an internal rib.

3. The battery array according to claim 1, wherein the rib is part of the top cover or the bottom cover of the array housing.

4. The battery array of claim 1, wherein the rib is part of the top cover of the array housing, and the battery array further comprises a second rib, the second rib being part of the bottom cover of the array housing.

5. The battery array according to claim 4, comprising: The second groove extends at least partially through the second rib; The second fin of the thermal barrier assembly is received within the second groove; as well as A second adhesive / sealant is used to secure the second fin within the second groove.

6. The battery array of claim 1, wherein the rib is an external rib, and the battery array includes internal ribs axially aligned with the external ribs.

7. The battery array of claim 6, wherein the groove extends through the inner rib and at least partially extends into the outer rib.

8. The battery array of claim 7, wherein the groove is axially aligned with the inner rib and the outer rib.

9. The battery array according to claim 1, wherein the thermal barrier assembly separates the first compartment containing the first group of battery cells from the second compartment containing the second group of battery cells, and optionally, wherein the first compartment and the second compartment each establish a coolant flow channel within the battery array.

10. The battery array of claim 1, wherein the thermal barrier assembly is a multilayer structure, the multilayer structure including at least one of the fins and a thermal resistance material layer or a foam layer, and optionally, wherein the upper or lower portion of the fins extends above or below the first group of battery cells or the second group of battery cells and is accommodated within the groove.

11. The battery array of claim 1, wherein the array housing includes a second rib, and the cell stack includes a second thermal barrier assembly disposed between the second group of battery cells and the third group of battery cells, and the battery array further includes: A second groove, the second groove extending at least partially through the second rib; The second fin of the second thermal barrier assembly is received in the second groove; as well as A second adhesive / sealant is used to secure the second fin within the second groove.

12. A battery array for a traction battery pack, comprising: An array housing, the array housing including a first cover having external ribs and internal ribs; A cell stack, the cell stack being housed within the array housing and including a thermal barrier assembly disposed between a first battery cell and a second battery cell; A groove that extends into the inner rib and extends toward the outer rib; The thermal barrier assembly has fins that are received within the grooves. as well as An adhesive / sealant is used to secure the fins within the groove.

13. The battery array of claim 12, wherein the first cover is a top cover or a bottom cover.

14. The battery array of claim 12, wherein the groove extends at least partially into the outer rib.

15. The battery array of claim 12, wherein the adhesive / sealant surrounds at least three sides of the fins.

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