Battery case structure

Abstract

The utility model relates to a battery case structure. The battery case structure comprises a case body and a cover plate arranged at the top end of the case body, the box body is hermetically connected with the cover plate; at least two cells are arranged in the box body, and a partition plate is arranged between every two adjacent cells; a battery module is arranged in each cell; a fixing sleeve is arranged on one side, close to the partition plate, of each cell, and one end of each battery module is clamped in the corresponding fixing sleeve; each fixing sleeve is arranged to abut against the corresponding partition plate. A fire-fighting module is arranged at one end of the partition plate, and the fire-fighting module abuts against the two fixing sleeves; a battery management unit is arranged at one end, far away from the fire-fighting module, of the box body, and the battery management unit is connected with the two battery modules. The lithium battery structure and the lead-acid battery structure are compatible, so that the lithium battery structure and the lead-acid battery structure can be directly replaced for use, the replacement cost is low, the structure is simple, the heat dissipation effect is good, the installation is convenient, and the stability is better.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a battery chassis structure. Background Technology

[0002] With the deepening development of new energy industries such as energy storage, photovoltaics, and wind power, multiple new energy sources are integrating to form complementary energy stations. Complementary energy stations generally include wind power-storage power stations, photovoltaic power-storage power stations, and wind-solar-storage power stations. Existing lead-acid energy storage batteries are large in size, heavy in weight, have low energy density, short cycle life, low discharge rate, and low safety, making it difficult to meet practical application needs. Furthermore, existing lead-acid battery structures are not compatible with lithium-ion battery structures; they cannot be directly replaced with lithium-ion battery structures, resulting in high replacement costs. Utility Model Content

[0003] The purpose of this utility model is to provide a battery casing structure to solve the technical problems of existing lead-acid energy storage batteries, such as large size, heavy weight, low energy density, short cycle life, low discharge rate, low safety, incompatibility with lithium-ion battery structures, inability to be directly replaced by lithium battery structures, and high replacement costs.

[0004] To achieve the above objectives, this utility model provides a battery enclosure structure, including an enclosure body and a cover plate disposed on the top of the enclosure body; the enclosure body and the cover plate are sealed together.

[0005] The housing contains at least two cell sections, with a partition between adjacent cell sections. Each cell section contains a battery module. Each cell section has a retaining sleeve on the side closest to the partition, with one end of the battery module secured within the retaining sleeve. Each retaining sleeve abuts against the partition. One end of the partition has a fire suppression module, which abuts against two of the retaining sleeves.

[0006] A battery management unit is provided at the end of the enclosure away from the fire protection module, and the battery management unit is connected to the two battery modules respectively.

[0007] In a preferred embodiment, the housing includes a bottom plate, a first front panel, a second front panel, a first side panel, and a second side panel; the first front panel and the second front panel are respectively disposed at both ends of the bottom plate; the first side panel and the second side panel are respectively disposed on both sides of the bottom plate; the bottom plate and the cover plate are disposed opposite to each other, and the cover plate is connected to the first front panel, the second front panel, the first side panel, and the second side panel respectively.

[0008] In a preferred embodiment, the partition is fixed to the base plate, and a first gap is provided between the partition and the first panel, and between the partition and the second panel.

[0009] In a preferred embodiment, the fire protection module is positioned close to the first panel, and the battery management unit is positioned close to the second panel; the battery management unit is communicatively connected to external devices. This enables remote control of the battery box, allowing it to receive commands for charging, discharging, etc.

[0010] In a preferred embodiment, the battery management unit is equipped with a monitoring module for monitoring the voltage, current, temperature, and SOC information of the battery module. The monitoring module is connected to the battery module. Through the monitoring module, parameters such as temperature, voltage, and current of the module can be measured, and the status of the battery pack can be monitored in real time. It has alarm and protection functions for over-temperature, under-voltage, over-voltage, over-current, short circuit, and reverse connection, ensuring the safe use of the energy storage device.

[0011] In a preferred embodiment, a protective cover is provided between the battery module and the first side plate, and between the battery module and the second side plate, and the protective cover is fixed to the base plate; the protective cover abuts against the battery module, and a second gap is provided between the protective cover and the first side plate, and between the protective cover and the second side plate.

[0012] In a preferred embodiment, an integrated busbar is provided between the protective cover and the battery module, the integrated busbar is connected to the battery module, and the integrated busbar abuts against the protective cover.

[0013] In a preferred embodiment, the second panel is provided with a positive terminal and a negative terminal; the two battery modules are connected in series via a series copper busbar; the negative copper busbar of one battery module is connected to the negative terminal, and the positive copper busbar of the other battery module is connected to the positive terminal.

[0014] In a preferred embodiment, the series copper busbar is disposed between the cover plate and the partition plate; the positive electrode copper busbar and the negative electrode copper busbar are disposed within the first gap, and both the positive electrode copper busbar and the negative electrode copper busbar are bent multi-segment copper busbars adapted to the first gap. This arrangement can effectively save space, thereby effectively reducing the volume of the battery chassis and effectively improving the energy density of the battery chassis.

[0015] In a preferred embodiment, a cooling fan is provided on the first panel; one end of the cooling fan near the housing is disposed within the first gap, and a third gap is provided between the cooling fan and the partition. This arrangement ensures efficient heat dissipation while effectively saving space, thereby reducing the volume of the battery housing and effectively improving the energy density of the battery housing.

[0016] In a preferred embodiment, handles are symmetrically provided at both ends of the second panel.

[0017] In a preferred embodiment, the battery enclosure structure is a lithium-ion battery enclosure structure or a lead-acid battery enclosure structure.

[0018] The technical solution proposed in this utility model has the following beneficial effects: The structure of this application, by providing a protective cover between the battery module and the side plate, and a fire-fighting module at one end of the partition, effectively improves the safety of the battery chassis and ensures its reliability. In this structure, the connection between battery modules and the connection between modules and terminals are achieved using integrated copper busbars, resulting in reasonable wiring, effectively saving space, thereby reducing the chassis volume, increasing the energy density of the chassis, and achieving a high discharge rate. This structure is compatible with both lithium battery chassis and lead-acid battery chassis structures, allowing for direct replacement with low replacement costs. This utility model has a simple structure, good heat dissipation, convenient installation, good stability, and is economical, safe, and practical, effectively meeting the needs of actual use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the battery casing structure according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A partial exploded view of the battery casing structure;

[0021] Figure 3 for Figure 1 An exploded view of the battery enclosure structure. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] like Figures 1 to 3 As shown, this utility model embodiment provides a battery chassis structure, including a chassis 10 and a cover plate 20 disposed on the top of the chassis 10; the chassis 10 and the cover plate 20 are sealed together.

[0028] The housing 10 contains at least two cell units (not shown in the figure), and a partition 30 is provided between two adjacent cell units. Each cell unit contains a battery module 40. Each cell unit has a fixing sleeve 50 on the side near the partition 30, and one end of the battery module 40 is fitted into the fixing sleeve 50. Each fixing sleeve 50 is respectively abutted against the partition 30. A fire protection module 60 is provided at one end of the partition 30, and the fire protection module 60 abuts against two of the fixing sleeves 50 respectively.

[0029] A battery management unit 70 is provided at the end of the enclosure 10 away from the fire protection module 60, and the battery management unit 70 is connected to the two battery modules 40 respectively.

[0030] For a preferred embodiment, please refer again. Figure 3 The housing 10 includes a bottom plate 11, a first panel 12, a second panel 13, a first side panel 14, and a second side panel 15; the first panel 12 and the second panel 13 are respectively disposed at both ends of the bottom plate 11; the first side panel 14 and the second side panel 15 are respectively disposed on both sides of the bottom plate 11; the bottom plate 11 is disposed opposite to the cover plate 20, and the cover plate 20 is connected to the first panel 12, the second panel 13, the first side panel 14, and the second side panel 15 respectively.

[0031] In this embodiment, the base plate 11 is integrally formed with the first panel 12 and the second panel 13. This ensures better sealing of the enclosure and facilitates installation and disassembly.

[0032] In a preferred embodiment, the partition 30 is fixed to the base plate 11, and a first gap is provided between the partition 30 and the first panel 12, and between the partition 30 and the second panel 13. This first gap effectively improves the heat dissipation of the chassis and provides sufficient space for component installation, thus saving chassis space and reducing chassis size.

[0033] In a preferred embodiment, the fire protection module 60 is positioned close to the first panel 12, and the battery management unit 70 is positioned close to the second panel 13; the battery management unit 70 is communicatively connected to external devices. This enables remote control of the battery box, allowing it to receive commands for charging, discharging, etc.

[0034] In a preferred embodiment, the battery management unit 70 is equipped with a monitoring module (not shown in the figure) for monitoring the voltage, current, temperature, and SOC information of the battery module 40. The monitoring module is connected to the battery module 40. Through the monitoring module, parameters such as temperature, voltage, and current of the module can be measured, and the status of the battery pack can be monitored in real time. It has alarm and protection functions such as over-temperature, under-voltage, over-voltage, over-current, short circuit, and reverse connection, ensuring the safe use of the energy storage device.

[0035] In a preferred embodiment, protective covers 80 are provided between the battery module 40 and the first side plate 14, and between the battery module 40 and the second side plate 15, respectively. The protective covers 80 are fixed to the base plate 11. The protective covers 80 abut against the battery module 40, and a second gap (not shown in the figure) is provided between the protective covers 80 and the first side plate 14, and between the protective covers 80 and the second side plate 15. This arrangement ensures efficient heat dissipation.

[0036] In a preferred embodiment, an integrated busbar 90 is provided between the protective cover 80 and the battery module 40. The integrated busbar 90 is connected to the battery module 40 and abuts against the protective cover 80. This arrangement simplifies the wiring layout, ensures connection stability, and effectively saves space, thereby reducing the size of the battery chassis.

[0037] In a preferred embodiment, the second panel 13 is provided with a positive terminal 131 and a negative terminal 132; the two battery modules 40 are connected in series by a series copper busbar 100; the negative copper busbar 41 of one battery module 40 is connected to the negative terminal 132, and the positive copper busbar 42 of the other battery module 40 is connected to the positive terminal 131.

[0038] In a preferred embodiment, the series copper busbar 100 is disposed between the cover plate 20 and the partition plate 30; the positive electrode copper busbar 42 and the negative electrode copper busbar 41 are disposed within the first gap, and both the positive electrode copper busbar 42 and the negative electrode copper busbar 41 are bent multi-segment copper busbars adapted to the first gap. This arrangement ensures connection stability while effectively saving space, thereby effectively reducing the volume of the battery casing and effectively improving the energy density of the battery casing.

[0039] In a preferred embodiment, a cooling fan 110 is provided on the first panel 12; one end of the cooling fan 110 near the inside of the housing 10 is disposed within the first gap, and a third gap is provided between the cooling fan 110 and the partition 30. The accommodating space of the third gap is smaller than the accommodating space of the first gap. This arrangement ensures efficient heat dissipation while achieving a reasonable layout of the components, thereby effectively saving space, reducing the volume of the battery housing, and effectively improving the energy density of the battery housing.

[0040] In a preferred embodiment, handles 120 are symmetrically provided at both ends of the second panel 13.

[0041] In a preferred embodiment, the battery enclosure structure is a lithium-ion battery enclosure structure or a lead-acid battery enclosure structure.

[0042] Unless otherwise specified, the components in this application are generally fixed or connected using screws, which facilitates production and assembly, and also makes it easy to disassemble and repair the battery when problems occur. This utility model has a simple structure, high space utilization, convenient installation, good stability, and is economical and practical, with broad application prospects.

[0043] The battery box structure of this application not only saves users electricity costs but also automatically switches to backup power mode during power outages. The system is highly intelligent, capable of collecting operational data in real time and adaptively adjusting the operating mode according to the operating status without manual intervention, thus reducing maintenance costs. The system has a high degree of integration, adopting an integrated design to reduce product energy consumption costs and achieve significant economic benefits. The system is highly secure, with multiple protections for each electrical device and system. It can process and analyze operational data in real time through a big data cloud platform using information and network technologies, providing safe, clean, reliable, and inexpensive electricity for stable system operation. It can also integrate photovoltaic and wind power access and energy storage into one unit.

[0044] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery chassis structure, characterized in that, It includes a housing and a cover plate disposed on the top of the housing; the housing and the cover plate are sealed together. The housing contains at least two cell sections, with a partition between adjacent cell sections. Each cell section contains a battery module. Each cell section has a retaining sleeve on the side closest to the partition, with one end of the battery module secured within the retaining sleeve. Each retaining sleeve abuts against the partition. One end of the partition has a fire suppression module, which abuts against two of the retaining sleeves. A battery management unit is provided at the end of the enclosure away from the fire protection module, and the battery management unit is connected to the two battery modules respectively.

2. The battery chassis structure according to claim 1, characterized in that, The enclosure includes a bottom plate, a first front panel, a second front panel, a first side panel, and a second side panel; the first front panel and the second front panel are respectively disposed at both ends of the bottom plate; the first side panel and the second side panel are respectively disposed on both sides of the bottom plate; the bottom plate and the cover plate are disposed opposite to each other, and the cover plate is connected to the first front panel, the second front panel, the first side panel, and the second side panel respectively.

3. The battery chassis structure according to claim 2, characterized in that, The partition is fixed to the base plate, and a first gap is provided between the partition and the first panel, and between the partition and the second panel.

4. The battery chassis structure according to claim 2, characterized in that, The fire protection module is located near the first panel, and the battery management unit is located near the second panel; the battery management unit is communicatively connected to external devices.

5. The battery chassis structure according to claim 1, characterized in that, The battery management unit is equipped with a monitoring module for monitoring the voltage, current, temperature and SOC information of the battery module, and the monitoring module is connected to the battery module.

6. The battery chassis structure according to claim 2, characterized in that, A protective cover is provided between the battery module and the first side plate, and between the battery module and the second side plate. The protective cover is fixed to the base plate. The protective cover abuts against the battery module, and a second gap is provided between the protective cover and the first side plate, and between the protective cover and the second side plate.

7. The battery chassis structure according to claim 6, characterized in that, An integrated busbar is provided between the protective cover and the battery module. The integrated busbar is connected to the battery module and abuts against the protective cover.

8. The battery chassis structure according to claim 3, characterized in that, The second panel is provided with a positive terminal and a negative terminal; the two battery modules are connected in series by a series copper busbar; the negative copper busbar of one battery module is connected to the negative terminal, and the positive copper busbar of the other battery module is connected to the positive terminal.

9. The battery chassis structure according to claim 8, characterized in that, The series copper busbar is disposed between the cover plate and the partition plate; the positive copper busbar and the negative copper busbar are disposed within the first gap, and both the positive copper busbar and the negative copper busbar are bent multi-segment copper busbars adapted to the first gap.

10. The battery chassis structure according to claim 3, characterized in that, A cooling fan is provided on the first panel; one end of the cooling fan near the inside of the housing is located in the first gap, and a third gap is provided between the cooling fan and the partition. The second panel has handles symmetrically arranged at both ends; The battery enclosure structure is either a lithium-ion battery enclosure structure or a lead-acid battery enclosure structure.

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