Battery box body and battery pack

Abstract

The utility model relates to the technical field of new energy batteries, and particularly discloses a battery box body and a battery pack, the battery box body and an electrical bin are arranged outside a battery bin, and the arrangement of the electrical bin can improve the space utilization rate of the battery bin, so that the energy density of the battery bin can be improved, and the performance of the battery pack can be improved. The influence of heat generated by the electrical bin on a battery pack in the battery bin can be reduced, the heat dissipation efficiency of the electrical bin is improved, and the thermal runaway risk is reduced. The battery box body comprises a battery bin, an electrical bin and a bottom plate, the electrical bin is connected to the outer wall of the battery bin, and the bottom of the battery bin and the bottom of the electrical bin are both connected to the bottom plate.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, specifically to a battery box and battery pack. Background Technology

[0002] With the continuous development of new energy technologies, new energy batteries, as an environmentally friendly energy storage and release device, have been widely used in energy storage power systems such as hydropower, thermal power, wind power and solar power plants, as well as in many technical fields such as power tools, electric bicycles, electric motorcycles, electric cars, military equipment, and aerospace.

[0003] The battery housing is a crucial structural component of the battery pack. Existing battery housings have an internal space divided into a battery compartment and an electrical compartment. The battery compartment houses the battery pack, while the electrical compartment houses the battery management system and other electrical components. However, this design, with both battery and electrical compartments within the same housing, reduces the space available for the battery compartment, impacting space utilization and energy density. Furthermore, the electrical components in the electrical compartment generate heat rapidly and significantly. Having both the electrical and battery compartments located inside the battery housing can easily lead to overheating within the battery housing, posing a risk of thermal runaway and compromising the battery pack's safety performance. Utility Model Content

[0004] In view of this, the present invention provides a battery box and battery pack to solve the problems of low space utilization, low energy density of battery compartments, and the risk of thermal runaway in existing battery boxes.

[0005] In a first aspect, this utility model provides a battery housing, including a battery compartment, an electrical compartment, and a base plate. The electrical compartment is detachably connected to the outer wall of the battery compartment. The battery compartment and the electrical compartment are two independent structural components. The bottoms of both the battery compartment and the electrical compartment are connected to the base plate. The base plate includes a base plate main body and a base plate extension. The base plate main body is disposed at the bottom of the battery compartment and connected to the bottom of the battery compartment. The base plate extension extends from one side of the base plate main body toward the electrical compartment. The base plate extension is disposed at the bottom of the electrical compartment and connected to the bottom of the electrical compartment. The battery compartment includes a battery compartment frame. The battery compartment frame surrounds the base plate main body and forms an internal space of the battery compartment together with the base plate main body. The electrical compartment includes a cover. The cover is disposed on the upper surface of the base plate extension of the base plate and forms a receiving cavity of the electrical compartment together with the base plate extension.

[0006] Beneficial effects: In this utility model, the electrical compartment of the battery housing is connected to the outer wall of the battery compartment, meaning the electrical compartment is external to the battery compartment. This placement of the electrical compartment does not affect the space utilization of the battery compartment, and the battery compartment can be configured to increase energy density, thereby improving the performance of the battery pack. Furthermore, because the electrical compartment is located outside the battery compartment, the heat generated by the electrical components inside the electrical compartment has virtually no impact on the battery pack inside. This also improves the heat dissipation efficiency of the electrical compartment, reduces the risk of thermal runaway, and ensures the safety performance of the battery pack.

[0007] Furthermore, both the battery compartment and the electrical compartment are connected to the same base plate, meaning they are arranged horizontally. In certain applications, such as automotive chassis, where a car seat needs to be installed above the battery compartment, the horizontal arrangement of the battery and electrical compartments avoids interfering with seat installation. Moreover, this horizontal arrangement reduces the overall height of the battery pack, facilitating installation and improving space utilization.

[0008] Secondly, the present invention also includes a battery pack, comprising the aforementioned battery housing.

[0009] Since the battery pack of this utility model includes the battery box of this utility model and has the same beneficial effects as the battery box, it will not be described again here. Attached Figure Description

[0010] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of the battery box of this utility model. Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the overall structure of the battery box of this utility model. Figure 2 ;

[0013] Figure 3 This is an exploded view of the battery box body (bottom plate hidden) of this utility model;

[0014] Figure 4 This is a schematic diagram of the battery compartment in the battery box of this utility model;

[0015] Figure 5 This is a schematic diagram of the electrical compartment in the battery box of this utility model;

[0016] Figure 6 This is a top view of the electrical compartment in the battery box of this utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Battery compartment; 101. Battery compartment opening; 102. Battery compartment frame;

[0019] 2. Electrical compartment; 201. Electrical compartment opening; 202. Flanged edge; 203. Sealing slot; 204. Protrusion; 205. Top opening; 206. Chamfered structure; 207. Cover;

[0020] 3. Base plate; 301. Main body of base plate; 302. Extension of base plate;

[0021] 4. Sealing components;

[0022] 5. Top cover; 501. Main body of top cover; 502. Extension of top cover.

[0023] 6. Water inlet;

[0024] 7. Water outlet;

[0025] 8. Clamping components. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following is combined Figures 1 to 6 This describes embodiments of the battery box and battery pack of this utility model.

[0028] According to an embodiment of the present invention, a battery housing is provided, which includes a battery compartment 1, an electrical compartment 2, and a base plate 3. The electrical compartment 2 is connected to the outer wall of the battery compartment 1, and the bottoms of both the battery compartment 1 and the electrical compartment 2 are connected to the base plate 3.

[0029] In this battery housing, the electrical compartment 2 is connected to the outer wall of the battery compartment 1, meaning the electrical compartment 2 is external to the battery compartment 1. This placement of the electrical compartment 2 does not affect the space utilization of the battery compartment 1, allowing the battery compartment 1 to increase energy density according to design requirements, thereby improving the battery pack's performance. Furthermore, since the electrical compartment 2 is located outside the battery compartment 1, the heat generated by the electrical components within the electrical compartment 2 has virtually no impact on the battery pack inside the battery compartment 1. This also improves the heat dissipation efficiency of the electrical compartment 2, reducing the risk of thermal runaway and ensuring the safety performance of the battery pack. In addition, the bottoms of both the battery compartment 1 and the electrical compartment 2 are connected to the same base plate, meaning they are arranged horizontally. When the battery pack is used in certain scenarios, such as a car chassis, where a car seat needs to be installed above the battery compartment 1, the horizontal arrangement of the battery compartment 1 and the electrical compartment 2 will not affect the seat's installation. Moreover, the horizontal arrangement of the battery compartment 1 and the electrical compartment 2 reduces the height of the battery pack, facilitating its installation and improving the utilization of the battery pack's installation space.

[0030] Furthermore, the battery compartment 1 and the electrical compartment 2 are two independent structural components. Optionally, the electrical compartment 2 can be detachably connected to the outer wall of the battery compartment 1. The electrical compartment 2 can be installed or separated from the battery compartment 1, allowing the electrical compartment 2 to be made of different materials than the battery compartment 1. For example, the electrical compartment 2 can be made of non-metallic materials, and its volume can be reduced according to the installation space to reduce the overall volume of the battery box. The electrical compartment 2 can also be formed into an irregular structure to adapt to irregular installation spaces (such as the installation space on a car chassis), while avoiding other devices within the installation space (such as other devices on the car chassis), thereby increasing space utilization. The molding difficulty of this electrical compartment 2 is also relatively low, which helps to reduce the manufacturing cost of the battery box. Moreover, since the battery compartment 1 and the electrical compartment 2 are two independent structural components of the battery box, the electrical compartment 2 can be matched with different specifications of the battery compartment 1 as needed, and the battery compartment 1 can also be matched with different specifications of the electrical compartment 2 as needed, making the compatibility of the battery compartment 1 and the electrical compartment 2 more diverse and improving the flexibility of the battery box installation.

[0031] The battery housing is one of the important structural components of a battery pack, mainly used to house and support the battery pack and electrical components within it. For example... Figures 1-2 As shown, in this embodiment, the battery housing includes a battery compartment 1 and an electrical compartment 2. The battery compartment 1 and the electrical compartment 2 are independent of each other. The electrical compartment 2 is connected to the outer wall of the battery compartment 1. Optionally, the electrical compartment 2 and the outer wall of the battery compartment 1 can be detachably connected. That is, when the battery compartment 1 and the electrical compartment 2 are installed together, they together form a complete battery housing. When the battery compartment 1 and the electrical compartment 2 are not installed together or are separated from each other, they do not constitute a complete battery housing.

[0032] like Figure 4As shown, in this embodiment, the battery compartment 1 has a near-rectangular structure and is made of metal, possessing high structural strength. The battery compartment 1 contains several battery packs, the specific number of which is determined by the power requirements of the battery pack. This high structural strength of the battery compartment 1 effectively protects the internal battery packs and ensures the reliability of the battery pack's operation. Of course, the battery compartment 1 also incorporates the structural features common to existing battery compartments, which will not be elaborated upon here.

[0033] Electrical components, such as a battery management system, are housed inside the electrical compartment 2. The electrical compartment 2 is separate from the battery compartment 1, but it is connected to the outer wall of the battery compartment 1. Because the electrical compartment 2 is external to the battery compartment 1, it does not occupy space in the battery compartment 1 and does not affect the space utilization rate of the battery compartment 1. This allows the battery compartment 1 to increase its energy density as needed. Furthermore, since the electrical compartment 2 is located outside the battery compartment 1, the heat generated by the electrical components inside the electrical compartment 2 will hardly affect the battery pack inside the battery compartment 1. The electrical compartment 2 also has higher heat dissipation efficiency, thus effectively reducing the risk of thermal runaway.

[0034] Furthermore, since the electrical compartment 2 is an independent component, it does not need to be made of the same material as the battery compartment 1, resulting in high manufacturing flexibility. For example, when the battery box needs to be installed on the vehicle chassis, the space reserved for the battery box is small due to other devices on the chassis, and the reserved space is often irregular in shape to avoid these other devices. In this case, the electrical compartment 2 can be made of non-metallic materials, such as injection molding materials. The electrical compartment 2 can be molded into an irregular shape to match the installation space through injection molding, and its volume can be appropriately reduced to adapt to the size and shape of the installation space, thereby improving the space utilization of the vehicle chassis and increasing the installation flexibility of the battery box.

[0035] In addition, the battery compartment 1 outer wall and the electrical compartment 2 can be connected by fasteners (bolts, etc.), adhesives, etc., which provides high flexibility in installation and can be selected according to the product requirements of the battery box.

[0036] like Figure 1 , Figure 2 As shown, in this embodiment, the battery compartment 1 and the electrical compartment 2 are arranged horizontally, with the electrical compartment 2 located on one side of the battery compartment 1. The width and overall volume of the electrical compartment 2 are smaller than those of the battery compartment 1, and the width direction is as follows: Figure 1 As shown in the a-a' direction, this makes the overall volume of the battery box smaller, so as to fit into the limited installation space.

[0037] Both battery compartment 1 and electrical compartment 2 are connected to the base plate 3 at their bottoms, allowing them to share a single base plate 3 and simplifying the battery pack structure. When the battery pack is used in a car chassis, a car seat needs to be installed above the battery compartment. Since the battery compartment and electrical compartment are arranged horizontally, this does not affect the installation of the seat. Furthermore, the horizontal arrangement of battery compartment 1 and electrical compartment 2 reduces the height of the battery pack, facilitating its installation and improving the utilization of the space available for battery pack installation.

[0038] like Figure 2 As shown, the base plate 3 includes a base plate main body 301 and a base plate extension 302. The base plate main body 301 is disposed at the bottom of the battery compartment 1 and connected to the bottom of the battery compartment 1. The base plate extension 302 extends from one side of the base plate main body 301 toward the electrical compartment 2. The base plate extension 302 is disposed at the bottom of the electrical compartment 2 and connected to the bottom of the electrical compartment 2.

[0039] In this embodiment, the bottom of the battery compartment 1 is sealed to the bottom plate 3, and the bottom of the electrical compartment 2 is also sealed to the bottom plate 3. Specifically, a sealing gasket is provided between the bottom of the battery compartment 1 and the bottom plate 3, and the bottom of the battery compartment 1 and the bottom plate 3 are sealed by the sealing gasket. Similarly, a sealing gasket is also provided between the bottom of the electrical compartment 2 and the bottom plate 3, and the bottom of the electrical compartment 2 and the bottom plate 3 are sealed by the sealing gasket.

[0040] Furthermore, the corners of the electrical compartment 2 are chamfered (206) to avoid interference with other structures in the installation space, further reducing the volume of the electrical compartment 2 and making it more suitable for irregular installation spaces. Figure 5 and Figure 6 As shown, the electrical compartment 2 has chamfered structures 206 at its corners away from the battery compartment 1. The chamfered structures 206 at different locations are not necessarily the same and need to be selected based on the shape of the specific installation space. Figure 6 Taking a perspective example, the lower corner of the electrical compartment 2, which is far from the battery compartment 1, has a shorter straight chamfer structure, while the upper corner of the electrical compartment 2, which is far from the battery compartment 1, has a longer straight chamfer structure.

[0041] Of course, in different embodiments, the chamfer structure 206 described above can also be a rounded corner structure to adapt to the needs of different installation spaces.

[0042] Furthermore, the top of the electrical compartment 2 is lower than the top of the battery compartment 1.

[0043] When the battery pack is placed horizontally, the top of the electrical compartment 2 is lower than the top of the battery compartment 1. Firstly, in the event of thermal runaway in the battery compartment 1, some high-temperature, high-pressure gases can easily escape from the top edge of the battery compartment 1. Setting the electrical compartment 2 lower than the top of the battery compartment 1 reduces the impact of these high-temperature, high-pressure gases on the electrical compartment 2 during thermal runaway. Secondly, when the battery pack is used in certain scenarios, such as in a car chassis, a car seat needs to be placed above the battery compartment 1, and the car seat will exert downward pressure on the battery compartment 1. Since the structural strength of the electrical compartment 2 may be lower than that of the battery compartment 1, making the top of the electrical compartment 2 lower than the top of the battery compartment 1 ensures that when the car seat presses down on the battery compartment 1, the bottom structure of the car seat is less likely to come into contact with the top of the electrical compartment 2, thus effectively protecting the electrical compartment 2 and preventing it from being crushed or damaged.

[0044] Furthermore, the base plate 3 is a heat exchange plate.

[0045] Battery compartment 1 and electrical compartment 2 are both connected to base plate 3, and base plate 3 is a heat exchange plate, which allows base plate 3 to cool battery compartment 1 and electrical compartment 2 at the same time, improve the temperature consistency of battery compartment 1 and electrical compartment 2, and further reduce the risk of thermal runaway of battery pack and improve the safety performance of battery pack.

[0046] Moreover, the base plate 3 also serves as a heat exchange plate, which can improve the integration of the battery box structure, making the battery box structure more compact, reducing manufacturing costs, and saving installation space.

[0047] Furthermore, the side wall of the electrical compartment 2 is provided with an inlet 6 and an outlet 7, and the bottom plate 3 has a heat exchange channel, with the inlet 6 and outlet 7 connected to the heat exchange channel.

[0048] In this embodiment, the base plate 3 is a heat exchange plate, and the interior of the base plate 3 has heat exchange channels. An inlet 6 and an outlet 7 are provided on the side wall of the electrical compartment 2, such as... Figure 1 , Figure 3 As shown, the inlet 6 and outlet 7 are connected to the heat exchange channel. Specifically, the inlet of the heat exchange channel is connected to the inlet 6 through the inlet pipe, and the outlet of the channel is connected to the outlet 7 through the outlet pipe. The cooling medium enters the heat exchange channel from the inlet 6, and after heat exchange, it flows out from the outlet 7.

[0049] By placing the inlet 6 and outlet 7 in the electrical compartment 2, on the one hand, space in the battery compartment 1 is further saved, the space utilization rate of the battery compartment 1 is improved, and its energy density is increased. On the other hand, since the electrical components in the electrical compartment 2 generate heat quickly, placing the inlet 6 in the electrical compartment 2 allows the cooling medium to enter through the inlet 6 and cool the electrical compartment 2 first, thereby improving the cooling effect on the electrical components and circuits in the electrical compartment 2.

[0050] Optionally, the water inlet 6 and the water outlet 7 are located on the side wall of the electrical compartment 2 away from the battery compartment 1 to prevent the cooling medium from contacting the battery compartment 1, thereby further ensuring the safety of the battery pack.

[0051] Furthermore, the side wall of the battery compartment 1 facing the electrical compartment 2 is provided with a battery compartment opening 101, and the side wall of the electrical compartment 2 facing the battery compartment 1 is provided with an electrical compartment opening 201. The battery compartment opening 101 and the electrical compartment opening 201 are mated together. A battery pack is provided inside the battery compartment 1, and an electrical component is provided inside the electrical compartment 2. The battery pack and the electrical component are electrically connected through the battery compartment opening 101 and the electrical compartment opening 201.

[0052] Both battery compartment 1 and electrical compartment 2 have openings formed on their opposite sidewalls. Battery compartment 1 and electrical compartment 2 are mated and installed at these openings, connecting the outer wall of electrical compartment 2 to the outer wall of battery compartment 1. Furthermore, these openings allow for communication between the internal spaces of battery compartment 1 and electrical compartment 2, thereby enabling electrical connection between the battery pack in battery compartment 1 and the electrical components in electrical compartment 2. In this embodiment, battery compartment 1 and electrical compartment 2 are mated and installed horizontally.

[0053] like Figures 3-4 As shown, a battery compartment opening 101 is provided on the side wall of the battery compartment 1 facing the electrical compartment 2. In this embodiment, the battery compartment opening 101 is a rectangular opening to facilitate its setting and shaping. The area of ​​the battery compartment opening 101 should not be too large, otherwise it will affect the overall structural strength of the battery compartment 1. The area of ​​the battery compartment opening 101 should not be too small either, otherwise the operating space will be too small and it will be inconvenient to realize the electrical connection between the battery pack and the electrical components.

[0054] Correspondingly, an electrical compartment opening 201 is provided on the side wall of the electrical compartment 2 facing the battery compartment 1, and the location, shape, and size of the electrical compartment opening 201 should match the battery compartment opening 101. Figure 5 As shown, specifically, the electrical compartment 2 has an outwardly projecting protrusion 204 on its side wall facing the battery compartment 1. The protrusion 204 has an inverted T-shaped structure, and the electrical compartment opening 201 is located on the upper part of the protrusion 204. The position, shape, and size of the electrical compartment opening 201 match those of the battery compartment opening 101. By providing the protrusion 204, it is easy to align the battery compartment 1 and the electrical compartment 2 during installation, thus facilitating the installation operation of the battery compartment 1 and the electrical compartment 2.

[0055] A battery pack is housed inside battery compartment 1. The battery pack is electrically connected to an FPC (Flexible Printed Circuit), which is positioned on the upper surface of the battery pack. To facilitate the FPC's extension through battery compartment opening 101, opening 101 is located near the upper part of battery compartment 1. Correspondingly, electrical compartment opening 201 is also located near the upper part of electrical compartment 2. The FPC can sequentially connect to electrical components (such as a battery management system) within electrical compartment 2 through battery compartment opening 101 and electrical compartment opening 201, thereby enabling the battery pack to monitor the battery pack's operating status.

[0056] Furthermore, the battery compartment opening 101 and the electrical compartment opening 201 are sealed together.

[0057] To ensure the airtightness of the battery compartment, the battery compartment opening 101 and the electrical compartment opening 201 are sealed together to prevent external dust, moisture, etc. from entering the battery compartment 1 or electrical compartment 2 through the gap between the battery compartment opening 101 and the electrical compartment opening 201, thus affecting the safe operation of the battery pack.

[0058] Furthermore, the battery compartment opening 101 and the electrical compartment opening 201 are sealed together by a sealing structure. The sealing structure includes a matching seal 4 and a sealing groove 203. One of the seal 4 and the sealing groove 203 is located near the battery compartment opening 101, and the other is located near the electrical compartment opening 201.

[0059] A sealing structure is provided between the battery compartment opening 101 and the electrical compartment opening 201 to achieve a sealed connection between them. The sealing structure includes a sealing element 4 and a sealing groove 203, which are matched with each other. Specifically, the sealing element 4 is adapted to be inserted into the sealing groove 203 to achieve a sealed connection between the battery compartment opening 101 and the electrical compartment opening 201.

[0060] Optionally, the seal 4 is disposed around at least a portion of the outer contour of the battery compartment opening 101 or the electrical compartment opening 201 to seal the mating gap between the battery compartment opening 101 and the electrical compartment opening 201.

[0061] In this embodiment, as Figure 3 , Figure 4As shown, the sealing element 4 is disposed on the side wall of the battery compartment 1 facing the electrical compartment 2 and surrounds part of the outer contour of the battery compartment opening 101. The battery compartment opening 101 is a rectangular opening, and the sealing element 4 is disposed around the lower edge and the left and right edges of the battery compartment opening 101. This is because the battery compartment opening 101 is located close to the upper part of the battery compartment 1, and the subsequent upper cover 5 of the battery compartment 1 and the upper cover seal will seal the upper edge of the battery compartment opening 101, thereby achieving a complete seal of the mating gap between the battery compartment opening 101 and the electrical compartment opening 201.

[0062] A sealing groove 203 is provided on the side wall of the electrical compartment 2 facing the battery compartment 1 and is provided around part of the outer contour of the electrical compartment opening 201. Specifically, the sealing groove 203 is provided on the protrusion 204, and the shape and position of the sealing groove 203 match the sealing element 4. The electrical compartment opening 201 is a rectangular opening, and the sealing groove 203 is provided around the lower edge and the left and right edges of the electrical compartment opening 201.

[0063] Furthermore, the seal 4 protrudes from the side wall of the battery compartment 1 facing the electrical compartment 2, so as to facilitate the engagement of the seal 4 with the sealing groove 203 and make operation convenient.

[0064] Optionally, in order to improve the sealing between the seal 4 and the sealing groove 203 and ensure the sealing of the mating position between the battery compartment opening 101 and the electrical compartment opening 201, the seal 4 and the sealing groove 203 are interference-fitted.

[0065] Depending on the specific requirements, the seal 4 can be made of gaskets or sealant.

[0066] In other embodiments, depending on the different battery compartment configuration requirements, the seal 4 can be positioned near the electrical compartment opening 201, while the sealing slot 203 can be positioned near the battery compartment opening 101.

[0067] Furthermore, the battery housing also includes a top cover 5, which includes a top cover body 501 and a top cover extension 502. The top cover body 501 covers the top of the battery compartment 1. The top of the electrical compartment 2 has a top opening 205, which communicates with the electrical compartment opening 201. The top cover extension 502 extends from the top cover body 501 toward the electrical compartment 2 and covers and seals the top opening 205.

[0068] like Figure 1 and Figure 3 As shown, the battery housing also includes a top cover 5, which is mainly used to seal the top of the battery compartment 1 and the top of the electrical compartment 2, so that the interior of the battery compartment 1 and the electrical compartment 2 forms a sealed space to ensure the safe operation of the battery pack.

[0069] The electrical compartment 2 has a top opening 205 at the top, and the top opening 205 communicates with the electrical compartment opening 201 to expand the operating space and facilitate the electrical connection between the battery pack in the battery compartment 1 and the electrical components in the electrical compartment 2 through the top opening 205 and the electrical compartment opening 201.

[0070] In this embodiment, the top cover 5 includes a top cover main body 501 and a top cover extension 502. The top cover main body 501 covers the top of the battery compartment 1. The shape of the top cover main body 501 matches the shape of the top of the battery compartment 1. Specifically, the top cover main body 501 has a rectangular structure.

[0071] The upper cover extension 502 extends horizontally from one side of the upper cover main body 501, and the size of the upper cover extension 502 is smaller than the size of the upper cover main body 501. This is because the top opening 205 of the electrical compartment 2 in this embodiment is small, and the shape and size of the upper cover extension 502 match the shape and size of the top opening 205. Specifically, the upper cover extension 502 is also a rectangular structure. The upper cover extension 502 covers and seals the top opening 205.

[0072] The top cover extension 502 can be connected to the top of the electrical compartment 2 by bolts or other means. By connecting the top cover 5 to both the battery compartment 1 and the electrical compartment 2, the overall integrity of the battery compartment 1 and the electrical compartment 2 after docking and installation can be improved, and the movement and installation of the battery box can be facilitated.

[0073] The bottom of the main body 501 of the top cover is sealed to the top of the battery compartment 1 to ensure the sealing of the inside of the battery compartment 1 and the safety of the battery pack operation. For example, a sealing gasket or sealing ring is provided between the bottom of the main body 501 of the top cover and the top of the battery compartment 1. Furthermore, the bottom of the top cover extension 502 is sealed to the top of the top opening 205 to ensure the sealing of the inside of the electrical compartment 2 and the safety of the battery pack operation. For example, a sealing gasket or sealing ring is provided between the bottom of the top cover extension 502 and the top of the top opening 205.

[0074] Furthermore, the battery housing also includes a clamping member 8, which is disposed on the upper surface of the upper cover body 501. The battery compartment 1 includes a battery compartment frame 102, and the upper cover body 501 covers the battery compartment frame 102. The clamping member 8 is disposed corresponding to the battery compartment frame 102. The clamping member 8, the upper cover body 501, and the battery compartment frame 102 are connected by fasteners.

[0075] like Figure 1 and Figure 3 As shown, the battery compartment 1 includes a battery compartment frame 102, which surrounds the base plate main body 301 and forms the internal space of the battery compartment. The upper cover main body 501 covers the battery compartment frame 102 to seal the internal space of the battery compartment.

[0076] like Figure 1 and Figure 3 As shown, the battery housing also includes a clamping member 8, which is mainly used to press the upper cover body 501 against the battery compartment frame 102 to improve the sealing of the battery compartment 1. In order to reduce the weight of the battery housing, the clamping member 8 is a frame structure, and the shape of the clamping member 8 matches the contour shape of the upper surface edge of the upper cover body 501. The clamping member 8 is positioned corresponding to the battery compartment frame 102.

[0077] Mounting holes are provided at corresponding positions of the clamping member 8, the main body of the top cover 501, and the battery compartment frame 102. When installing the clamping member 8, fasteners (such as bolts) are passed through the clamping member 8, the main body of the top cover 501, and the battery compartment frame 102 in sequence and tightened so that the clamping member 8, the main body of the top cover 501, and the battery compartment frame 102 are pressed together in the vertical direction to ensure the sealing effect of the main body of the top cover 501 on the battery compartment 1 and improve the sealing of the internal space of the battery compartment.

[0078] Furthermore, the electrical compartment 2 includes a cover 207, which covers the upper surface of the base plate 3 and forms an electrical compartment receiving cavity. The electrical components inside the electrical compartment 2 are disposed within the electrical compartment receiving cavity and are disposed on the upper surface of the base plate 3.

[0079] like Figures 5-6 As shown, in this embodiment, the electrical compartment 2 includes a cover 207 with its opening facing downwards. The cross-sectional shape of the cover 207 is an inverted U-shape with the opening facing downwards. The opening of the cover 207 is abutted and installed with the upper surface of the base plate 3. Specifically, the opening of the cover 207 is abutted and installed with the upper surface of the base plate extension 302, thereby forming an electrical compartment receiving cavity. The electrical components inside the electrical compartment 2 are disposed within the electrical compartment receiving cavity. Specifically, all electrical components are disposed on the upper surface of the base plate 3, and specifically, all electrical components are disposed on the upper surface of the base plate extension 302.

[0080] During assembly, the base plate 3 is first placed horizontally. Then, the electrical components are arranged sequentially on the upper surface of the base plate extension 302. Next, the cover 207 is placed over the base plate extension 302 from top to bottom, covering the electrical components so that they are placed within the electrical compartment. This electrical compartment 2 structure provides ample operating space for installing and maintaining electrical components, facilitating connection operations and improving assembly and maintenance efficiency.

[0081] Of course, in order to ensure the safety of the electrical components inside the electrical compartment, the connection between the cover 207 and the base plate extension 302 is sealed, such as by providing a sealing gasket or sealing ring between the bottom of the opening of the cover 207 and the upper surface of the base plate extension 302.

[0082] Furthermore, the bottom edge of the cover 207 has a flange 202 protruding from the outer wall of the cover 207, and the flange 202 is connected to the base plate 3.

[0083] like Figures 5-6 As shown, the bottom edge of the cover 207 has a flange 202 that protrudes outward from the outer wall of the cover 207. The shape of the flange 202 is consistent with the outline of the outer wall of the cover 207, so as to minimize the volume of the electrical compartment 2 and meet the requirements of space utilization.

[0084] The flange 202 is connected to the base plate 3 to facilitate the installation connection between the electrical compartment 2 and the base plate extension 302. Specifically, multiple mounting holes are provided on the flange 202, and these holes are spaced apart, with multiple screws suitable for passing through them. Correspondingly, multiple screw holes are provided on the base plate extension 302, with the positions of the screw holes matching those on the flange 202, and screws suitable for screwing into them. By passing screws through the mounting holes and tightening them, the electrical compartment 2 and the base plate extension 302 can be reliably installed, making the operation simple and assembly easy.

[0085] This embodiment also provides a battery pack, including the battery housing described in the above embodiment.

[0086] like Figures 1-2 As shown, the battery housing is one of the important structural components of the battery pack, mainly used to house and support the battery pack and electrical components. Of course, the battery pack in this embodiment also has the structures and components that are common to existing battery packs, which will not be described in detail here.

[0087] The battery pack of this embodiment has the battery housing of this embodiment, and the electrical compartment 2 is connected to the outer wall of the battery compartment 1. That is, the electrical compartment 2 is placed outside the battery compartment 1. The placement of the electrical compartment 2 does not affect the space utilization of the battery compartment 1. The battery compartment 1 can increase the energy density according to design needs, thereby improving the performance of the battery pack. Moreover, since the electrical compartment 2 is placed outside the battery compartment 1, the heat generated by the electrical components inside the electrical compartment 2 will hardly affect the battery pack inside the battery compartment 1. At the same time, it can improve the heat dissipation efficiency of the electrical compartment 2, reduce the risk of thermal runaway, and ensure the safety performance of the battery pack. In addition, the bottoms of the battery compartment 1 and the electrical compartment 2 are both connected to the same base plate 3, that is, the battery compartment 1 and the electrical compartment 2 are arranged in a horizontal direction. When the battery pack is used in a car chassis, a car seat needs to be installed on top of the battery compartment 1. The horizontal arrangement of the battery compartment 1 and the electrical compartment 2 will not affect the installation of the seat. Furthermore, the horizontal arrangement of the battery compartment 1 and the electrical compartment 2 can reduce the height of the battery pack, facilitate the installation of the battery pack, and improve the utilization of the battery pack installation space.

[0088] Furthermore, battery compartment 1 and electrical compartment 2 are two independent structural components. Electrical compartment 2 can be connected to or separated from battery compartment 1, allowing it to be made of different materials, such as non-metallic materials. Its volume can be reduced to fit different installation spaces, thus decreasing the overall size of the battery pack. Electrical compartment 2 can also be molded into an irregular structure to adapt to irregular installation spaces (such as a car chassis), while avoiding interference with other devices within the space (such as other devices on the car chassis), thereby increasing space utilization. The molding of electrical compartment 2 is also relatively simple, helping to reduce the manufacturing cost of the battery pack. Moreover, electrical compartment 2 can be paired with different sizes of battery compartment 1, and vice versa, improving the compatibility of battery compartment 1 and electrical compartment 2, increasing the flexibility of battery pack installation, and meeting the manufacturing needs of different battery pack models.

[0089] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery housing, characterized in that, The battery compartment (1), electrical compartment (2), and base plate (3) are included. The electrical compartment (2) is detachably connected to the outer wall of the battery compartment (1). The battery compartment (1) and the electrical compartment (2) are two independent structural components. The bottoms of both the battery compartment (1) and the electrical compartment (2) are connected to the base plate (3). The base plate (3) includes a base plate main body (301) and a base plate extension (302). The base plate main body (301) is located at the bottom of the battery compartment (1) and connected to the bottom of the battery compartment (1). The base plate extension (302) extends from one side of the base plate main body (301) toward the electrical compartment. The air chamber (2) extends in the direction of the bottom plate extension (302), which is disposed at the bottom of the electrical chamber (2) and connected to the bottom of the electrical chamber (2). The battery chamber (1) includes a battery chamber frame (102), which surrounds the bottom plate main body (301) and forms the internal space of the battery chamber (1) with the bottom plate main body (301). The electrical chamber (2) includes a cover (207), which covers the upper surface of the bottom plate extension (302) of the bottom plate (3) and forms the receiving cavity of the electrical chamber (2) with the bottom plate extension (302).

2. The battery housing according to claim 1, characterized in that, The top of the electrical compartment (2) is lower than the top of the battery compartment (1).

3. The battery housing according to claim 1, characterized in that, The base plate (3) is a heat exchange plate.

4. The battery housing according to claim 3, characterized in that, The side wall of the electrical compartment (2) is provided with an inlet (6) and an outlet (7), and the bottom plate (3) has a heat exchange channel. The inlet (6) and the outlet (7) are connected to the heat exchange channel.

5. The battery housing according to claim 1, characterized in that, The bottom of the electrical compartment (2) is sealed to the base plate (3).

6. The battery housing according to claim 1, characterized in that, The battery compartment (1) has a battery compartment opening (101) on its side wall facing the electrical compartment (2), and the electrical compartment (2) has an electrical compartment opening (201) on its side wall facing the battery compartment (1). The battery compartment opening (101) and the electrical compartment opening (201) are connected and fitted together. A battery pack is provided inside the battery compartment (1), and an electrical component is provided inside the electrical compartment (2). The battery pack and the electrical component are electrically connected through the battery compartment opening (101) and the electrical compartment opening (201).

7. The battery housing according to claim 6, characterized in that, The battery compartment opening (101) is sealed and connected to the electrical compartment opening (201).

8. The battery housing according to claim 7, characterized in that, The battery compartment opening (101) and the electrical compartment opening (201) are sealed together by a sealing structure. The sealing structure includes a matching seal (4) and a sealing groove (203). One of the seal (4) and the sealing groove (203) is located near the battery compartment opening (101), and the other is located near the electrical compartment opening (201).

9. The battery housing according to claim 6, characterized in that, It also includes a top cover (5), which includes a top cover body (501) and a top cover extension (502). The top cover body (501) covers the top of the battery compartment (1). The top of the electrical compartment (2) has a top opening (205) that communicates with the electrical compartment opening (201). The top cover extension (502) extends from the top cover body (501) toward the electrical compartment (2) and covers and seals the top opening (205).

10. The battery housing according to claim 9, characterized in that, It also includes a clamping member (8), which is disposed on the upper surface of the upper cover body (501), the upper cover body (501) covers the battery compartment frame (102), the clamping member (8) is disposed corresponding to the battery compartment frame (102), and the clamping member (8), the upper cover body (501) and the battery compartment frame (102) are connected by fasteners.

11. The battery housing according to any one of claims 1-10, characterized in that, The electrical components in the electrical compartment (2) are located inside the electrical compartment cavity and are located on the upper surface of the base plate (3).

12. The battery housing according to claim 11, characterized in that, The bottom edge of the cover (207) has a flange (202) protruding from the outer wall of the cover (207), and the flange (202) is connected to the base plate (3).

13. A battery pack, characterized in that, Includes the battery housing as described in any one of claims 1-12.

Images