Battery systems and methods of assembling battery systems

Abstract

To provide a method for optimizing a structure of a battery system and improving the stability of the battery system, which is a technical problem being urgent in the conventional battery technical field.SOLUTION: A battery system and a method of assembling the battery system are provided. The battery system includes a battery and a battery box. The battery box includes a box body assembly and a battery bracket. The battery box is provided with a plurality of battery slots for accommodating the battery. Each battery slot includes a first battery slot and a second battery slot. The first battery slot and the second battery slot are oppositely disposed. The first battery slot is disposed in the battery bracket. The second battery slot is disposed in the box body assembly. The box body assembly and the battery bracket clamp the battery.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] This disclosure claims priority to a Chinese patent application filed with the China Patent Office on January 30, 2024, bearing application number 202410132738.7, the entire contents of which are incorporated herein by reference. FIELD OF THE DISCLOSURE The present disclosure relates to the field of battery technology, and more particularly to battery systems and methods of assembling battery systems. [Background technology]

[0002] With the rapid development of new energy sources, automotive low-voltage batteries are facing adverse conditions. For example, when driving at high speeds on bumpy roads, the battery is likely to experience strong vibrations and impacts, which can easily damage the battery. In severe cases, the battery may go into thermal runaway, causing a safety accident. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, how to optimize the structure of a battery system and improve the stability of the battery system is an urgent technical problem in the field of conventional battery technology. [Means for solving the problem]

[0004] The present disclosure provides a battery system including a battery and a battery box installed to house the battery, the battery box including a housing assembly and a battery bracket attached within the housing assembly, the battery box having a plurality of battery slots for accommodating batteries, each battery slot including a first battery slot and a second battery slot, the first battery slot and the second battery slot being arranged opposite each other, the first battery slot being attached to the battery bracket, the second battery slot being attached to the housing assembly, and a structural adhesive being installed within the battery slots to secure the batteries.

[0005] The present disclosure further provides a method for assembling a battery system, which includes providing a battery bracket, with first arc ribs and structural adhesive pre-installed in each first battery slot of the battery bracket, assembling batteries into the first battery slots and connecting a pre-installed BMS (Battery Management System) assembly and bus bars to the batteries, providing a housing assembly, with second arc ribs and structural adhesive pre-installed in each second battery slot of the housing assembly, assembling the battery bracket with the assembled batteries and the housing assembly, and providing a lid assembly, and covering the assembled housing assembly with the lid assembly. [Effects of the Invention]

[0006] In the battery system provided by the present disclosure, the battery is sandwiched between the housing assembly and the battery bracket, thereby limiting and fixing the battery, ensuring that the battery is fixed in the battery slot, preventing relative movement between the battery and the battery box, and improving the stability of the battery system. In addition, the second battery slot is directly installed in the housing assembly, which makes the height of the housing assembly lower than that of a combination structure of an independent mounting slot part and housing, thereby saving vertical space. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a battery system provided by some embodiments of the present disclosure. [Figure 2] FIG. 1 is an exploded view of a battery system provided by some implementations of the present disclosure. [Figure 3] FIG. 1 is a three-dimensional view of an elevation viewing angle of a battery system provided by some implementations of the present disclosure. [Figure 4] FIG. 1 is a three-dimensional view of an elevation viewing angle of a battery bracket provided by some embodiments of the present disclosure. [Figure 5]1 is a three-dimensional view of an elevation viewing angle of a battery bracket with a battery mounted thereon provided by some embodiments of the present disclosure. [Figure 6] FIG. 1 is a top view of a battery system provided by some implementations of the present disclosure after removing the top lid. [Figure 7] 7 is a cross-sectional view taken along line AA of FIG. 6 provided in accordance with some embodiments of the present disclosure. [Figure 8] FIG. 1 is a flow diagram of a method for assembling a battery system provided by some implementations of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0008] It should be understood that the specific implementation modes described herein are merely for the purpose of explaining and interpreting the present disclosure, and are not intended to limit the present disclosure. In this disclosure, unless otherwise specified, the directional terms "up" and "down" used generally refer to up and down in the actual use or operating state of the device, specifically referring to the drawing direction of the drawing. "Inside" and "outside" refer to the profile of the device.

[0009] In the prior art, vehicle-mounted low-voltage batteries face adverse conditions. For example, high-speed driving on bumpy roads can easily cause strong vibrations and impacts on the battery, potentially damaging it. In severe cases, this can lead to thermal runaway and safety hazards. Therefore, the embodiments of the present disclosure provide a battery system and a battery system assembly method, in which the battery is clamped by a housing assembly and a battery bracket, limiting and fixing the battery, ensuring that the battery is fixed within the battery slot, preventing relative movement between the battery and the battery box, and improving the stability of the battery system. The second battery slot is directly installed in the housing assembly, which allows the housing assembly to be lower in height than a separate mounting slot and housing combination, thereby saving vertical space. For specific technical solutions, see the following specific description.

[0010] In the following description, the terms "battery module," "battery," "battery element," "battery cell," and "battery pack" are used interchangeably and can refer to any one of a variety of different rechargeable battery chemistries and structures, including, but not limited to, lithium-ion (e.g., lithium-ion phosphate, lithium cobalt oxide, lithium iron phosphate, other lithium metal oxides, etc.), lithium-ion polymer, nickel-metal hydride, nickel-cadmium, nickel-metal hydride, nickel-zinc, silver-zinc, or other battery type structures. The term "electric vehicle" herein refers to fully electric vehicles, referred to as EVs, plug-in hybrid vehicles, referred to as PHEVs, or hybrid electric vehicles (HEVs). Hybrid vehicles employ multiple propulsion sources resulting in an electric drive system. It should be understood that the same reference numerals in multiple drawings refer to the same or functionally equivalent parts.

[0011] Embodiments of the present disclosure are generally applicable to systems employing electric motors, and more particularly, but not exclusively, to electric vehicles using multi-phase electric motors (e.g., induction motors). Electric vehicles use one or more energy storage sources, such as a battery pack, to supply the vehicle with electrical energy, at least a portion of which is used to propel the vehicle. The stored energy is used to provide the energy required for other vehicle systems, such as vehicle lighting, vehicle compartment heating, ventilation, and air conditioning (HVAC) systems, auxiliary control systems (e.g., sensors, displays, navigation systems, etc.), and vehicle entertainment systems (e.g., radio, DVD, MP3, etc.). Traditional electric vehicles include passenger vehicles and vehicles designed to transport cargo, examples of which include cars, trucks, electric vehicles, and recreational boats. Electric vehicles also include specialized work vehicles and push cars, some of which may incorporate forklifts, scissor lifts, lifting and / or bending arm aerial work platforms, street cleaning systems, conveyors, and flatbed transport platforms.

[0012] Specifically, referring to Figures 1 to 8, Figure 1 is a perspective view of a battery system provided by an embodiment of the present disclosure, in which the battery system 10 specifically includes a battery 300 and a battery box installed to accommodate the battery 300, the battery box including a housing assembly 200 and a battery bracket 100 mounted within the housing assembly 200, the battery box having a plurality of battery slots for accommodating the battery 300, each battery slot including a first battery slot 101 and a second battery slot 201, the first battery slot 101 and the second battery slot 201 being installed opposite each other, the first battery slot 101 being installed in the battery bracket 100, the second battery slot 201 being installed in the housing assembly 200, and the housing assembly 200 and the battery bracket 100 sandwiching the battery 300.

[0013] The battery system 10 provided in this embodiment is a low-voltage battery system, and its voltage is specifically 12V. The number of batteries 300 may be four or other numbers, and can be specifically installed according to actual needs.

[0014] At the same time, with the future development of the low-voltage battery system 10, the voltage can also be adjusted, for example, to 48V, and can be specifically set according to actual demand.

[0015] Here, the cross-sectional shapes of the first battery slot 101 and the second battery slot 201 are both semicircular arc shapes that match the battery 300 .

[0016] In the embodiment of the present disclosure, the battery 300 is sandwiched between the housing assembly 200 and the battery bracket 100, thereby limiting and fixing the position of the battery 300, ensuring that the battery 300 is fixed within the battery slot, preventing relative movement between the battery 300 and the battery box, and improving the stability of the battery system 10. In addition, the second battery slot 201 is directly installed in the housing assembly 200, which makes the height of the housing assembly 200 lower than a structure combining an independent mounting slot component and a housing, thereby saving vertical space.

[0017] To enhance the structural stability of the battery system 10, in some embodiments of the present disclosure, as shown in Figures 1 and 4, the groove wall of the first battery slot 101 is provided with a plurality of first arc ribs 102 that abut against the battery 300.

[0018] In some embodiments of the present disclosure, the groove wall of the second battery slot 201 is provided with a plurality of second arc ribs 202 that abut against the battery 300 .

[0019] In some embodiments of the present disclosure, the groove wall of the first battery slot 101 is provided with a plurality of first arc ribs 102 that abut against the battery 300, and the groove wall of the second battery slot 201 is provided with a plurality of second arc ribs 202 that abut against the battery 300.

[0020] In some embodiments of the present disclosure, a plurality of first arc ribs 102 are provided on the groove wall of the first battery slot 101, which can effectively enhance the structural strength of the battery bracket 100. A plurality of first arc ribs 202 are provided on the groove wall of the second battery slot 201, which can effectively enhance the structural strength of the housing assembly 200 and also provide a positioning reference for the battery 300.

[0021] In some embodiments of the present disclosure, a plurality of first arc ribs 102 are uniformly spaced apart on the groove wall of the first battery slot 101, and a structural adhesive 400 for fixing the battery 300 is provided between adjacent first arc ribs 102, and / or a structural adhesive 400 for fixing the battery 300 is provided between the first arc ribs 102 and both ends of the first battery slot 101.

[0022] A plurality of second arc ribs 202 are installed at uniform intervals on the groove wall of the second battery slot 201, and a structural adhesive 400 for fixing the battery 300 is installed between adjacent second arc ribs 202, and / or a structural adhesive 400 for fixing the battery 300 is installed between the second arc ribs 202 and both ends of the second battery slot 201.

[0023] Here, the thickness of the structural adhesive 400 may be equal to the thickness of the first arc rib 102 and / or the second arc rib 202 .

[0024] In the embodiments of the present disclosure, through some implementation methods, the adhesive thickness of the battery 300 can be guaranteed by installing the structural adhesive 400 and the first arc rib 102, thereby ensuring the adhesive effect and durability of the battery 300, the battery bracket 100, and the housing assembly 200, and improving the overall stability and safety of the battery system 10.

[0025] It should be noted that the structural adhesive 400 in FIG. 1 is shown for clarity and is for illustrative purposes only, and specific application areas and ranges of the structural adhesive 400 will be shown in the specific examples below.

[0026] In some embodiments of the present disclosure, a first protruding rib 103 is disposed between adjacent first battery slots 101 .

[0027] In some embodiments of the present disclosure, a second protruding rib 203 is disposed between adjacent second battery slots 201 .

[0028] In some embodiments of the present disclosure, a first protruding rib 103 is disposed between adjacent first battery slots 101, and a second protruding rib 203 is disposed between adjacent second battery slots 201.

[0029] In the embodiment of the present disclosure, a first protruding rib 103 is installed between adjacent first battery slots 101, and / or a second protruding rib 203 is installed between adjacent second battery slots 201, thereby effectively improving the overall structural strength and safety of the battery system 10.

[0030] To improve the safety of the battery system 10, safety accidents caused by thermal runaway of the battery 300 are avoided. To this end, in some embodiments of the present disclosure, a pressure relief passage 212 is formed between the battery bracket 100 and the housing assembly 200, the pressure relief passage 212 is located between the end of the battery 300 and the side panel of the housing assembly 200, and the explosion-proof valve 301 of the battery 300 is directly connected to the pressure relief passage 212. In this way, when the battery system 10 satisfies the requirement of being able to cope with thermal runaway, the structure can be simplified, costs can be reduced, and efficiency can be improved.

[0031] Optionally, a notch 107 is provided in the end plate 106 of the battery bracket 100 to communicate the explosion-proof valve 301 of the battery 300 with the pressure relief passage 212. This prevents the battery bracket 100 from blocking the explosion-proof valve 301 of the battery 300, which helps ensure smooth pressure relief in the event of thermal runaway of the battery 300.

[0032] Optionally, a pressure relief valve is mounted on the shroud and communicates with the pressure relief passage 212 .

[0033] Specifically, a first pressure relief valve 205 is installed on a first side plate 204 of the housing assembly 200 near the first end of the battery 300. This allows pressure relief in the event of thermal runaway on the first end side of the battery 300, thereby improving the safety of the battery system 10.

[0034] Optionally, a second pressure relief valve 207 is provided on a second side panel 206 of the housing assembly 200 near the second end of the battery 300. This allows pressure relief in the event of thermal runaway on the second end side of the battery 300, thereby improving the safety of the battery system 10.

[0035] At the same time, a first pressure relief valve 205 is installed on a first side plate 204 of the housing assembly 200 near a first end of the battery 300, and a second pressure relief valve 207 is installed on a second side plate 206 of the housing assembly 200 near a second end of the battery 300. This allows both ends of the battery 300 to simultaneously release pressure in the event of thermal runaway, thereby improving the safety of the battery system 10.

[0036] In some embodiments of the present disclosure, explosion-proof valves 301 are installed at both ends of the battery, and the pressure relief passage 212 includes a first pressure relief passage 208 and a second pressure relief passage 209 located on either side of the battery bracket 100, with the first pressure relief passage 208 directly communicating with the explosion-proof valve 301 at the first end of the battery 300 and the second pressure relief passage 209 directly communicating with the explosion-proof valve 301 at the second end of the battery 300. In this way, if the battery 300 experiences thermal runaway, both ends of the battery 300 can simultaneously perform explosion-proof pressure relief, improving the explosion-proof pressure relief capability and enhancing the safety of the battery system 10.

[0037] In some embodiments of the present disclosure, the battery system 10 further includes a BMS (Battery Management System) assembly 600, which is connected to the battery 300, and the pressure relief passage 212 and the BMS assembly 600 are respectively installed on different sides of the battery bracket 100. In this way, isolation between smoke and the BMS can be achieved, and the BMS can be prevented from being damaged and unable to report a heat loss warning signal.

[0038] Here, the first pressure relief passage 208 and / or the first pressure relief passage 209 are both isolated from the BMS assembly 600, and specific embodiments can be referred to in the following examples, which will not be described again here.

[0039] In some embodiments of the present disclosure, the battery bracket 100 includes a bottom plate 104 located at the bottom of the first battery slot 101, the BMS 600 is attached to the side of the bottom plate 104 away from the battery 300, and the end of the bottom plate 104 abuts against the side plate of the housing assembly 200, thereby forming the pressure relief passage 212 on the side of the bottom plate 104 closer to the battery 300.

[0040] The embodiments of the present disclosure provide countermeasures for the occurrence of thermal runaway in the battery system 10, achieve isolation between the smoke and the BMS assembly 600, avoid the BMS being damaged and unable to report a heat loss warning signal, achieve directional exhaust, and prevent explosions from occurring in the battery system 10 to some extent, thereby effectively improving the safety of the battery system 10.

[0041] In some embodiments of the present disclosure, the battery bracket 100 further includes a third side plate 105 connected to the bottom plate 104 on the side closer to the battery 300, and both ends of the third side plate 105 abut against the side plates of the housing assembly 200, thereby forming a pressure relief passage 212 on the side of the bottom plate closer to the battery 300, and a connecting portion 211 for fixing the battery bracket 100 to the housing assembly 200 is provided on the side of the third side plate 105 away from the pressure relief passage 212.

[0042] In the embodiment of the present disclosure, the end of the third side panel 105 abuts against the side panel of the housing assembly 200, thereby forming a pressure relief passage 212 on the side closer to the battery 300, thereby isolating the mounting position on the side of the non-pressure relief passage 212 and facilitating the mounting of the battery bracket 100 and the housing assembly 200. The bottom panel 104, the two third side panels 105, the side panels of the housing assembly 200 and the bottom protective plate of the housing assembly 200 form the pressure relief passage 212.

[0043] In order to enhance the structural strength of the battery bracket 100, in the embodiment of the present disclosure, reinforcing ribs 210 are installed on the outer sides of the two third side plates 105, and connecting portions 211 are installed at one end away from the bottom plate 104, and the reinforcing ribs 210 are respectively connected to the third side plates 105 and the connecting portions 211, and the connecting portions 211 are used to fix the battery bracket 100 to the housing assembly.

[0044] In some embodiments of the present disclosure, the battery system 10 further includes a bus bar 500 , which is mounted on the battery bracket 100 and connected to the battery 300 .

[0045] In one specific embodiment of the present disclosure, as shown in Figures 2, 4, and 5, the battery system 10 includes four batteries 300, and from left to right, an outer end of a first battery is connected to a bus bar 500 for connecting an input line or an output line, an inner end of the first battery is connected to an inner end of a second battery via a bus bar 500 fixed to the battery bracket 100, an outer end of the second battery is connected to an outer end of a third battery via the bus bar 500, an inner end of the third battery is connected to an inner end of a fourth battery via a bus bar 500 fixed to the battery bracket 100, and an outer end of the fourth battery is connected to a bus bar 500 for connecting an output line or an input line.

[0046] In some embodiments of the present disclosure, the battery system 10 further includes a BMS assembly 600, which is installed on the side of the battery bracket 100 away from the housing assembly 200 and connected to the battery 300.

[0047] In some embodiments of the present disclosure, the battery system 10 further includes a lid assembly 700 , which is mounted on the housing assembly 200 such that the lid assembly 700 covers the housing assembly 200 .

[0048] In addition, the present disclosure further provides a method for assembling a battery system. As shown in Figure 8, Figure 8 is a flow chart of the method for assembling a battery system provided by an embodiment of the present disclosure. The method for assembling a battery system includes the following steps 801, 802, 803, 804, and 805. Step 801: Provide a battery bracket, and a first arc rib and a structural adhesive are pre-installed in each first battery slot of the battery bracket. Alternatively, a first protruding rib may be pre-installed between adjacent first battery slots. Step 802: Assemble the battery into the first battery slot via structural adhesive, and connect the pre-installed BMS assembly and busbar to the battery. Here, assembling the battery into the first battery slot may include assembling the battery after providing a jig in the first battery slot to perform auxiliary positioning. Step 803: Providing a housing assembly, in which a second arc rib and a structural adhesive are pre-installed in each second battery slot of the housing assembly. Alternatively, a second protruding rib may be pre-installed between adjacent second battery slots. Step 804: Assemble the battery bracket and housing assembly with the battery assembled. Step 805: Providing a lid assembly, and the lid assembly covering the assembled housing assembly.

[0049] For specific structures corresponding to the battery system in the embodiments of the present disclosure, please refer to the descriptions of the embodiments of some implementations.

[0050] In the embodiment of the present disclosure, the first arc rib and structural adhesive are pre-installed in each first battery slot through the installation process of steps 801 to 805. Therefore, after the first battery slot is fitted with a jig for auxiliary positioning to complete the assembly, the next step (welding the battery and the series aluminum bar) can be immediately carried out, eliminating the need for other auxiliary positioning or continuous maintenance of the original auxiliary positioning, thereby shortening the production cycle and improving efficiency. [Explanation of symbols]

[0051] Battery system: 10, battery bracket: 100, housing assembly: 200, battery: 300, structural adhesive: 400, bus bar: 500, BMS assembly: 600, lid assembly: 700, first battery slot: 101, first arc rib: 102, first protruding rib: 103, bottom plate: 104, third side plate: 105, end plate: 106, notch: 107, second battery slot: 201, second arc rib: 202, second protruding rib: 203, first side plate: 204, first pressure relief valve: 205, second side plate: 206, second pressure relief valve: 207, first pressure relief passage: 208, second pressure relief passage: 209, reinforcing rib: 210, connecting portion: 211, pressure relief passage: 212, explosion-proof valve: 301

Claims

1. 1. A battery system comprising: a battery; and a battery box installed to house the battery, the battery box includes a housing assembly and a battery bracket attached within the housing assembly, the battery box is provided with a plurality of battery slots for accommodating the batteries, each of the battery slots includes a first battery slot and a second battery slot, the first battery slot and the second battery slot are arranged opposite each other, the first battery slot is attached to the battery bracket, and the second battery slot is attached to the housing assembly, and the housing assembly and the battery bracket sandwich the battery therebetween; A battery system characterized by:

2. The first battery slot has a groove wall provided with a plurality of first arcuate ribs that contact the battery; and / or a plurality of second arcuate ribs are provided on the groove wall of the second battery slot to abut against the battery; The battery system according to claim 1 .

3. A plurality of the first arc ribs are uniformly spaced apart from one another on the groove wall of the first battery slot, and a structural adhesive is provided between adjacent first arc ribs to secure the battery; and / or a structural adhesive is provided between the first arc rib and both ends of the first battery slot to fix the battery; The battery system according to claim 2 .

4. A plurality of the second arc ribs are respectively installed at uniform intervals on the groove wall of the second battery slot, and a structural adhesive is installed between adjacent second arc ribs to fix the battery; and / or a structural adhesive is provided between the second arc rib and both ends of the second battery slot to fix the battery; The battery system according to claim 2 .

5. a first protruding rib is disposed between adjacent first battery slots; and / or a second protruding rib is provided between adjacent second battery slots; The battery system according to claim 1 .

6. The cross-sectional shapes of the first battery slot and the second battery slot are both arc-shaped to match the battery. The battery system according to claim 1 .

7. a pressure relief passage is formed between the battery bracket and the housing assembly, and an explosion-proof valve of the battery communicates with the pressure relief passage; The battery system according to claim 1 .

8. a notch is provided on the end plate of the battery bracket, so that the explosion-proof valve of the battery communicates with the pressure relief passage; The battery system according to claim 7 .

9. a pressure relief valve attached to a side plate of the pressure relief passage, the pressure relief valve communicating with the pressure relief passage; the side panels include a first side panel and a second side panel disposed opposite each other, and a first pressure relief valve is disposed on the first side panel of the housing assembly that is closest to a first end of the battery; and / or a second pressure relief valve is provided on the second side panel of the housing assembly near the second end of the battery; The battery system according to claim 7 .

10. An explosion-proof valve is installed on each end of the battery, and the pressure relief passage includes a first pressure relief passage and a second pressure relief passage located on each side of the battery bracket, the first pressure relief passage directly communicating with the explosion-proof valve at the first end of the battery, and the second pressure relief passage directly communicating with the explosion-proof valve at the second end of the battery. The battery system according to claim 7 .

11. The battery system further includes a BMS (Battery Management System) assembly, the BMS assembly is connected to the battery, and the pressure relief passage and the BMS assembly are respectively installed on different sides of the battery bracket. The battery system according to claim 7 .

12. The battery bracket includes a bottom plate located at the bottom of the first battery slot, the BMS assembly is attached to a side of the bottom plate that is farther from the battery, and an end of the bottom plate abuts against a side plate of the housing assembly, thereby forming the pressure relief passage on a side of the bottom plate that is closer to the battery. The battery system according to claim 11 .

13. the battery bracket further includes a third side plate connected to the bottom plate on a side closer to the battery, an end of the third side plate abutting against a side plate of the housing assembly, thereby forming the pressure relief passage on the side of the bottom plate closer to the battery, and a connecting portion for fixing the battery bracket to the housing assembly is provided on the side of the third side plate away from the pressure relief passage. The battery system according to claim 12 .

14. a reinforcing rib is provided on a side of the third side plate away from the battery, and a connecting portion is provided on one end of the third side plate away from the bottom plate, the reinforcing rib is respectively connected to the third side plate and the connecting portion, the connecting portion and the pressure relief passage are respectively located on different sides of the battery bracket, and the connecting portion is provided to fix the battery bracket to the housing assembly; The battery system according to claim 13 .

15. the battery system further includes a bus bar, the bus bar is installed on the battery bracket, and the bus bar is connected to the battery.

15. The battery system according to claim 1, wherein the battery is a battery.

16. the battery system further includes a lid assembly, the lid assembly is mounted on the housing assembly, and the lid assembly is mounted to cover the housing assembly.

15. The battery system according to claim 1, wherein the battery is a battery.

17. the battery bracket is connected to the housing assembly; 13. The battery system according to claim 1, wherein the battery is a battery.

18. A method for assembling a battery system, comprising: providing a battery bracket, wherein a first arc rib and a structural adhesive are pre-installed in each first battery slot of the battery bracket; Assembling a battery into the first battery slot and connecting a pre-installed BMS assembly and busbar to the battery; providing a housing assembly, wherein a second arc rib and a structural adhesive are pre-installed in each second battery slot of the housing assembly; Assembling the battery bracket with the battery assembled thereto and the housing assembly; providing a lid assembly and covering the assembled housing assembly with the lid assembly; A method for assembling a battery system.

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