A quick assembly double layer battery

Abstract

The application discloses a double-layer battery which can be quickly assembled, comprising a shell, an H-shaped support and two battery modules, the H-shaped support is arranged in the shell and detachably connected with the inner side surface of the bottom of the shell, and the H-shaped support and the top and bottom of the shell respectively enclose two containing spaces, the two battery modules are respectively contained in the two containing spaces, and each battery module is matched with the shape of the corresponding containing space. By arranging the H-shaped support with the specific structure, the horizontal separation part of the H-shaped support naturally forms two independent battery containing spaces, and efficient use of space is realized. Meanwhile, the limiting parts arranged above and below can reliably horizontally limit the two-layer battery modules, the complicated end plate extrusion fixing mode is replaced, the weight of the end plate is saved, more battery cores can be contained in the battery module under the same weight, the energy density of the battery pack is improved, in addition, the installation and positioning of the battery module are more convenient and accurate, and quick assembly is realized.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a fast-assembly double-layer battery. Background Technology

[0002] Currently, traditional double-layer battery structures typically use end plates to compress and fix the battery module. This not only involves complex assembly processes and difficult disassembly and maintenance, but also results in a large overall weight due to structural redundancy. At the same time, existing brackets often lack reasonable spatial layout and heat dissipation design, making it difficult to effectively dissipate the heat generated by the battery during charging and discharging, affecting the battery's lifespan and safety performance. In addition, existing battery structures have poor coordination between electrical connections and mechanical fixation. For example, the flexible acquisition circuit board interface often interferes with the bracket or shell, further limiting its reliability and applicability in practical applications. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a fast-assembly double-layer battery to solve the technical problems of low assembly efficiency, insufficient heat dissipation, bulky overall structure and poor electromechanical coordination of existing double-layer batteries.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] A quick-assembly double-layer battery includes: a housing, an H-shaped bracket, and two battery modules. The H-shaped bracket is disposed inside the housing and is detachably connected to the inner bottom side of the housing, and together with the top and bottom of the housing, it forms two upper and lower receiving spaces. The two battery modules are respectively housed in the two receiving spaces, and each battery module matches the shape of the corresponding receiving space.

[0008] By designing an H-shaped bracket with a specific structure, the horizontal partition naturally forms two independent battery housing spaces, achieving efficient space utilization. Simultaneously, the upper and lower limiting parts reliably limit the lateral positioning of both battery modules, replacing the traditional complex end-plate compression fixing method. This eliminates the weight of the end plates, allowing the battery module to contain more cells with the same weight, thereby increasing the energy density of the battery pack. It also makes the installation and positioning of the battery modules simpler and more accurate, enabling rapid assembly.

[0009] In some embodiments, the H-shaped bracket includes: a horizontally extending partition and limiting portions located on the upper and lower end faces of the partition, the limiting portions extending vertically.

[0010] In some embodiments, two connecting walls are formed by vertically extending from both sides of the bottom of the housing. Each connecting wall has a plurality of first connecting holes spaced apart along its length. A second connecting hole is formed on the H-shaped bracket corresponding to the position of each first connecting hole. The second connecting hole passes through the H-shaped bracket and also includes a locking pin, which is inserted into the first connecting hole and the second connecting hole (9) and threadedly engaged with the first and second connecting holes.

[0011] By matching the corresponding holes on the outer shell connecting wall with the H-shaped bracket and using the vertically inserted locking pin for threaded fastening, the H-shaped bracket and the outer shell can be quickly connected and fixed. This connection method is simple to operate, requires no complicated tools, significantly improves assembly efficiency, and ensures a firm connection, thus guaranteeing the stability of the overall structure.

[0012] In some embodiments, the battery module includes: a plurality of battery groups arranged side by side along the length direction of the H-shaped bracket, each battery group including a plurality of battery cells arranged side by side along the width direction of the H-shaped bracket, a flexible acquisition circuit board connecting the plurality of battery cells in the same group, and a first clearance groove and a second clearance groove respectively provided on the limiting part and the connecting wall corresponding to the interface position of the flexible acquisition circuit board.

[0013] By pre-cutting clearance grooves on the limiting part and connecting wall, dedicated space is provided for the flexible acquisition circuit board and interface between battery modules. This effectively avoids the flexible acquisition circuit board being squeezed or interfering with structural components during assembly, improving the reliability and safety of electrical connections, while making the internal wiring neater and easier to maintain.

[0014] In some embodiments, the partition is a hollow structure and has a U-shaped coolant channel that bends and extends along the width of the partition. It also includes an injection port and an outlet port, with the injection port connected to the first end of the U-shaped coolant channel and the outlet port connected to the last end of the U-shaped coolant channel.

[0015] By integrating the loop-shaped coolant channels into the partition of the H-shaped bracket, a built-in heat dissipation system is formed. The coolant flows within the meandering channels, directly and efficiently carrying away the heat generated by the battery module during operation. This greatly improves the heat dissipation problem in the case of double-layer battery stacking. This integrated heat dissipation design does not occupy additional space, has a short heat dissipation path, and is highly efficient, helping to maintain the battery in the optimal temperature range and improving performance and safety.

[0016] In some embodiments, the system further includes: a plurality of spaced-apart loop-shaped coolant pipes embedded between adjacent battery cells in the same column of each battery group, wherein the beginning ends of the plurality of loop-shaped coolant pipes are connected to the injection port and the end ends are connected to the outlet port.

[0017] By embedding multiple spaced loop-shaped coolant pipes between adjacent battery cells in the same column of each battery group, the cooling pipes can directly and tightly fit each critical part that needs heat dissipation, greatly increasing the effective heat dissipation area. In particular, the multiple loop-shaped coolant pipes are connected to the main circulation loop in a way that the beginning and end are connected separately, ensuring the uniform distribution and collection of coolant flow. This achieves precise and efficient thermal management of the inside of the battery module, especially the hot spots between the cells, significantly improving the overall heat dissipation efficiency and uniformity, effectively preventing local overheating. At the same time, due to its compact layout embedded in the gaps between the cells, it does not increase the module volume, providing a reliable guarantee for the high power density and long-life stable operation of the battery pack.

[0018] In some embodiments, each battery module has an adhesive layer coated on its bottom.

[0019] The battery module is firmly bonded to the H-shaped bracket or the inner bottom surface of the housing using an adhesive layer, achieving a high-strength connection between it and the mounting surface, thus ensuring installation stability. Simultaneously, the adhesive layer makes the connection between the battery module and the mounting surface tighter and seamless, improving thermal conductivity and enhancing overall heat dissipation.

[0020] In some embodiments, the housing includes a base and a top cover detachably connected to the base, the top cover being made of plastic.

[0021] Using a plastic top cover significantly reduces the overall weight of the battery pack, which is especially important for portable devices or weight-sensitive applications. The plastic top cover also offers good electrical insulation and molding flexibility, contributing to improved product safety and design freedom. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the quick-assembly double-layer battery of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the quick-assembly double-layer battery after removing the top cover.

[0024] Figure 3 This is a diagram showing the assembly of the base and H-shaped bracket in the quick-assembly double-layer battery of this utility model.

[0025] Figure 4 This is a schematic diagram of the battery module in the rapid assembly double-layer battery of this utility model;

[0026] Figure 5 This is a first-view structural schematic diagram of the loop-shaped coolant channel in the rapidly assembled double-layer battery of this utility model;

[0027] Figure 6This is a second-view structural schematic diagram of the loop-shaped coolant channel in the rapidly assembled double-layer battery of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the base and H-shaped bracket in the quick-assembly double-layer battery of this utility model;

[0029] Figure 8 This is a cross-sectional view of the base and H-shaped bracket assembly in the quick-assembly double-layer battery of this utility model.

[0030] Figure label:

[0031] 1. Outer shell; 101. Base; 1011. Connecting wall; 10111. First connecting hole; 10112. Second clearance groove; 102. Top cover; 2. H-shaped bracket; 201. Divider; 2011. U-shaped coolant channel; 202. Limiting part; 2021. Second connecting hole; 2022. First clearance groove; 3. Battery module; 301. Battery group; 3011. Battery cell; 4. Locking post; 5. Flexible acquisition circuit board; 501. Interface; 6. Injection port; 7. Outlet port; 8. Coolant pipe; 9. Distributor valve body. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0033] This invention provides a quick-assembly double-layer battery, the core of which lies in an ingenious structural design. Specifically, the double-layer battery includes a shell 1, an H-shaped support 2 disposed inside the shell 1, and two battery modules 3 arranged vertically. In particular, the H-shaped support 2 is detachably connected to the bottom inner side of the shell 1, thus allowing the H-shaped support 2 to mate with the top and inner bottom surfaces of the shell 1, naturally defining two independent upper and lower receiving spaces. The two battery modules 3 are placed in their respective receiving spaces, and their shapes match the shapes of their respective receiving spaces, achieving a compact layout.

[0034] Furthermore, the specific structure of the H-shaped bracket 2 will be described. The H-shaped bracket 2 mainly includes a horizontally extending partition 201, from which vertical limiting portions 202 integrally extend from the two side edges of the upper and lower end faces. It is noteworthy that these limiting portions 202 extend upwards and downwards from the partition 201, thus forming limiting structures both above and below the partition 201.

[0035] Based on this, the connection method between the outer casing 1 and the H-shaped bracket 2 is described. The bottom sides of the outer casing 1 extend upwards to form two vertical connecting walls 1011. Each connecting wall 1011 has multiple first connecting holes 10111 at regular intervals along its length. Correspondingly, on the H-shaped bracket 2, for each of the first connecting holes 10111, a second connecting hole 2021 is also formed, penetrating through it. During assembly, a locking pin 4 is simultaneously passed through the first connecting hole 10111 and the second connecting hole 2021 from top to bottom or from bottom to top. Preferably, the locking pin 4 is fastened to these connecting holes using a threaded engagement; for example, the locking pin 4 can be a bolt, and the connecting holes have pre-installed threads. In this way, a quick and secure connection between the H-shaped bracket 2 and the outer casing 1 can be achieved by tightening the bolt.

[0036] Regarding the internal structure of the battery module 3, it consists of multiple battery groups 301 arranged along the length of the H-shaped bracket 2. Within each battery group 301, multiple individual battery cells 3011 are arranged side-by-side along the width of the H-shaped bracket 2. The multiple individual battery cells 3011 within the same battery group 301 are electrically connected via a common flexible acquisition circuit board 5. To address the spatial interference problem at the interface 501 of the flexible acquisition circuit board 5, a first clearance groove 2022 and a second clearance groove 10112 are precisely formed on the limiting part 202 of the H-shaped bracket 2 and the connecting wall 1011 of the outer casing 1, corresponding to the necessary passage of the interface 501 of the flexible acquisition circuit board 5. These clearance grooves provide a smooth passage for the flexible acquisition circuit board 5 and its interface 501, effectively preventing damage to the flexible acquisition circuit board 5 during assembly and fastening.

[0037] To improve the installation stability of the battery module 3 within the housing space and to buffer vibrations, an adhesive layer is applied between the bottom of each battery module 3 and the bearing surface (i.e., the contact surface between the lower battery module 3 and the bottom of the outer casing 1, and the contact surface between the upper battery module 3 and the upper surface of the H-shaped bracket 2 partition 201). This adhesive layer preferably uses a high-viscosity structural thermally conductive adhesive to ensure a high-strength bond between the battery module and the bearing surface. It also increases the thermal conductivity between the battery module and the bearing surface, which is beneficial for improving heat dissipation.

[0038] To address the heat dissipation issue during battery 3011 operation, this invention provides an efficient integrated solution. Specifically, the partition 201 of the H-shaped bracket 2 is designed as a hollow, double-walled structure, with a coolant channel 2011 extending in a curved manner along the width of the partition 201. This coolant channel 2011 can be integrally formed inside the partition 201 by extrusion molding or casting. An injection port 6 is connected to the first end of the coolant channel 2011, and an outlet 7 is connected to the second end. To drive coolant circulation, the system also includes a pump, which connects the injection port 6 and the outlet 7 via external piping, thus forming a complete cooling circulation loop. Driven by the pump, the coolant flows through the curved channel, effectively absorbing and carrying away the heat generated by the battery 3011 module. After the heat is carried away, the pipe flows through structures such as heat dissipation fins for cooling before returning to the battery.

[0039] Building upon this, to further optimize the heat dissipation uniformity within the battery cell 3011 module, this invention also incorporates multiple spaced-apart loop-shaped coolant pipes 8. Specifically, these loop-shaped coolant pipes 8 are carefully designed to embed into the gaps between adjacent battery cells 3011 located in the same column within each battery group 301. This allows the cooling pipes 8 to achieve maximum direct contact with the battery cells 3011. In particular, the beginnings of all the loop-shaped coolant pipes 8 are interconnected via a manifold and ultimately connected to the injection port 6; similarly, their ends are also collected via another manifold and uniformly connected to the outlet port 7. This parallel flow channel design ensures that the coolant flows synchronously and uniformly through each pipe embedded in the gaps between the battery cells 3011, thereby achieving precise and efficient thermal management within the battery cell 3011 module, especially in the core heat-generating area, effectively preventing localized overheating. Preferably, the loop-shaped coolant pipes 8 can be made of aluminum, a material with good thermal conductivity.

[0040] Since the battery has two battery modules 3, one above the other, and also has a cooling pipe 8 and a coolant channel 2011, multiple liquid distribution valves 9 are needed to divert the coolant output from the injection port 6. Similarly, liquid distribution valves 9 are connected to the outlet port 7 to collect the coolant flowing out of the cooling pipe 8 and the coolant channel 2011.

[0041] Regarding the structure of the outer casing 1, it adopts a split design, including a base 101 and a top cover 102 detachably connected to the base 101. The top cover 102 can be fixed to the base 101 by means of clips, screws, etc. Preferably, the top cover 102 is made of plastic material, such as ABS engineering plastic or polycarbonate, which can significantly reduce the weight of the overall structure. The base 101 can be made of metal material, such as aluminum alloy plate with a thickness of about 3 mm or more, to provide sufficient structural strength and rigidity.

[0042] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A rapidly assembled double-layer battery, characterized in that, include: The enclosure (1), the H-shaped bracket (2) and the two battery modules (3) are arranged inside the enclosure (1) and are detachably connected to the inner side of the bottom of the enclosure (1), and together with the top and bottom of the enclosure (1) form two upper and lower receiving spaces. The two battery modules (3) are respectively housed in the two receiving spaces, and each battery module (3) matches the shape of the corresponding receiving space.

2. The rapidly assembled double-layer battery according to claim 1, characterized in that, The H-shaped bracket (2) includes: a horizontally extending partition (201) and limiting parts (202) located on the upper and lower end faces of the partition (201) respectively, the limiting parts (202) extending vertically.

3. The rapidly assembled double-layer battery according to claim 2, characterized in that, The bottom sides of the outer shell (1) extend vertically to form two connecting walls (1011). Each connecting wall (1011) has multiple first connecting holes (10111) spaced apart along its length. The H-shaped bracket (2) has a second connecting hole (2021) corresponding to each of the first connecting holes (10111). The second connecting hole (2021) passes through the H-shaped bracket (2) and also includes a locking pin (4). The locking pin (4) is vertically inserted into the first and second connecting holes (2021) and threadedly engaged with the first and second connecting holes (2021).

4. The rapidly assembled double-layer battery according to claim 3, characterized in that, The battery module (3) includes: multiple battery groups (301) arranged side by side along the length direction of the H-shaped bracket (2), each battery group (301) including multiple battery cells (3011) arranged side by side along the width direction of the H-shaped bracket (2), and a flexible acquisition circuit board (5) connecting the multiple battery cells (3011) in the same group. The limiting part (202) and the connecting wall (1011) are respectively provided with a first clearance groove (2022) and a second clearance groove (10112) at the interface (501) position of the flexible acquisition circuit board (5).

5. The rapidly assembled double-layer battery according to claim 2, characterized in that, The partition (201) is a hollow structure and has a U-shaped coolant channel (2011) that extends and bends along the width direction of the partition (201). It also includes an injection port (6) and an outlet port (7). The injection port (6) is connected to the first end of the U-shaped coolant channel (2011), and the outlet port (7) is connected to the end of the U-shaped coolant channel (2011).

6. The rapidly assembled double-layer battery according to claim 5, characterized in that, Also includes: Multiple spaced loop-shaped coolant pipes (8) are embedded between adjacent battery cells (3011) in the same column of each battery group (301). The first ends of the multiple loop-shaped coolant pipes (8) are connected to the injection port (6), and the last ends are connected to the outlet port (7).

7. The rapidly assembled double-layer battery according to claim 1 or 5, characterized in that, Each battery module (3) has an adhesive layer coated on its bottom.

8. The rapidly assembled double-layer battery according to any one of claims 1-7, characterized in that, The outer casing (1) includes a base (101) and an upper cover (102) detachably connected to the base (101), the upper cover (102) being made of plastic.

Images