Battery structure beneficial to heat dissipation of BMU

Abstract

The utility model relates to a battery structure facilitating heat dissipation of a BMU. The battery structure comprises a battery box body, a plastic end plate, a BMU fixing plate and a BMU module, the plastic end plate is arranged on the end surface of one end of the battery box body; the BMU fixing plate is arranged on the side surface, far away from the battery box body, of the plastic end plate, and the BMU module is arranged on the side surface, far away from the plastic end plate, of the BMU fixing plate; a first notch is formed in one side, close to the top of the battery box body, of the plastic end plate, a second notch is formed in one side, close to the first notch, of the BMU fixing plate, and the first notch and the second notch are overlapped; the side, close to the BMU fixing plate, of the BMU module is provided with an acquisition line terminal, and the acquisition line terminal is arranged in the second gap. The BMU is simple in structure, convenient to maintain, good in stability, economical, safe and practical, the heat dissipation effect of the BMU can be effectively improved, and the actual use requirement can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a battery structure that is beneficial to heat dissipation of a BMU. Background Art

[0002] With the in-depth development of new energy industries such as energy storage, photovoltaics, and wind power, various new energy sources are integrating with each other to form complementary energy stations. Complementary energy stations generally include wind power storage power stations, photovoltaic power stations, and wind and solar power storage power stations.

[0003] With the rapid development of new energy, the current consumption of various new energy products is increasing, and the performance requirements for these products are also becoming increasingly demanding. In the current market, BMU modules are prone to damage and are consumable parts, requiring frequent maintenance and replacement during version upgrades, maintenance, and use. Existing BMU modules are installed inside the battery case. Once installed, the battery module itself is quite heavy, requiring the entire battery pack to be disassembled before the BMU module can be removed. Subsequent disassembly and replacement is cumbersome, inconvenient, and costly. Furthermore, existing battery structures typically secure the BMU to a metal sheet before inserting the wiring harness. This blind-plugging process carries the risk of mis-plugging and a high risk of poor contact, which can damage the BMU module and affect the proper functioning of the battery structure. Utility Model Content

[0004] The purpose of the utility model is to provide a battery structure that is conducive to BMU heat dissipation, so as to solve the technical problems of the existing battery structure such as poor heat dissipation effect, high probability of damage, difficult disassembly and replacement, easy error and poor contact of the BMU module.

[0005] To achieve the above objectives, an embodiment of the present invention provides a battery structure that facilitates BMU heat dissipation, comprising a battery case, a plastic end plate, a BMU fixing plate, and a BMU module; the plastic end plate is disposed on an end surface of one end of the battery case; the BMU fixing plate is disposed on a side of the plastic end plate away from the battery case; and the BMU module is disposed on a side of the BMU fixing plate away from the plastic end plate.

[0006] A first notch is provided on the side of the plastic end plate close to the top of the battery box, and a second notch is provided on the side of the BMU fixing plate close to the first notch, and the first notch and the second notch are overlapped; a collection line terminal is provided on the side of the BMU module close to the BMU fixing plate, and the collection line terminal is arranged in the second notch.

[0007] As a preferred embodiment, the BMU module is secured to the BMU mounting plate with several screws, with a first gap provided between the BMU module and the mounting plate. This first gap, and its controlled distance, reduces contact between components and the mounting plate, minimizing the risk of damage to BMU components caused by pressure during installation. It also provides effective thermal isolation, reducing the impact of heat radiation from the copper busbar and fuse on the BMU module's electronic components.

[0008] As a preferred embodiment, several screws are evenly arranged on the edge of the BMU fixing plate; the distance of the first gap is 4.5mm to 5.5mm, preferably 5mm; and the acquisition line terminal is a pluggable acquisition terminal. The acquisition line terminal is a pluggable acquisition terminal, which is easy to disassemble and assemble.

[0009] In this application, by placing the acquisition line terminal in the second notch, the acquisition line terminal is exposed at the top of the BMU module, allowing accurate judgment of whether the terminal is properly matched during insertion and removal. At the same time, due to the presence of the second notch, when several screws are evenly arranged on the edge of the BMU fixing plate, some screws can be fixed in the middle and upper part of the BMU module, making the BMU module more secure.

[0010] As a preferred embodiment, a fuse, a first copper bar, a second copper bar and a third copper bar are provided on the plastic end plate; one end of the fuse is connected to the first copper bar, and the other end is connected to the second copper bar; the first copper bar and the third copper bar are respectively connected to the battery modules in the battery box; and the second copper bar is connected to the external terminal.

[0011] As a preferred embodiment, the plastic end plate is fixed to the end surface of the battery box by a plurality of insulating bolts; the plurality of insulating bolts are evenly arranged on the edge of the plastic end plate;

[0012] A third notch is provided on the plastic end plate, and the fuse is fixed in the third notch through the first copper bar and the second copper bar.

[0013] As a preferred embodiment, the third notch is provided through the plastic end plate, the third notch is adapted to be provided to match the fuse, and a second gap is provided between the fuse and the third notch.

[0014] As a preferred embodiment, when the BMU fixing plate is disposed on the plastic end plate to form an accommodating space, the fuse and the first copper busbar are both disposed in the accommodating space, and the accommodating space is communicated with the first notch.

[0015] As a preferred embodiment, a first clamping position for accommodating the first copper bar is provided at one end corner of the plastic end plate, and the first copper bar is fixed to the first clamping position via a first insulating column;

[0016] A second clamping position for accommodating the second copper bar is provided at the other end corner of the plastic end plate, and the second clamping position is arranged diagonally to the first clamping position; the second copper bar is fixed to the second clamping position by a second insulating column;

[0017] A third clamping position for accommodating the third copper bar is provided at another end corner of the plastic end plate. The third clamping position and the first clamping position are both provided close to the same long side of the plastic end plate. The third copper bar is fixed to the third clamping position through a third insulating column.

[0018] As a preferred embodiment, the first copper bar and the second copper bar are both positive copper bars, and the third copper bar is a negative copper bar; the first copper bar is connected to the positive electrode of the battery module, and the third copper bar is connected to the negative electrode of the battery module.

[0019] As a preferred embodiment, a cooling fan is further provided on the plastic end plate, and the cooling fan is arranged diagonally to the third copper busbar.

[0020] As a preferred embodiment, the battery box includes a cover plate, a box body and a panel, the cover plate is covered on the top of the box body; the plastic end plate is arranged at one end of the box body close to the panel, the panel is covered on the side of the plastic end plate away from the battery module, and the panel is fixedly connected to the plastic end plate; a third gap is provided between the plastic end plate and the cover plate; a fourth gap is provided between the plastic end plate and the panel.

[0021] The technical solution proposed in the present invention has the following beneficial effects: the present application sets the BMU module at the end of the battery box through the fixing plate, realizes the outermost assembly setting of the BMU module, facilitates the subsequent after-sales maintenance, can effectively save the module moving platform, and reduces labor costs; it can realize the placement of the acquisition line terminal in a more intuitive position, can more intuitively see the reliability of the acquisition line contact, and effectively reduce the risk of poor contact of the acquisition terminal. In addition, the fixing plate and the plastic end plate are used to fix the BMU module, which reduces the contact between the BMU module components and the fixing plate, and reduces the risk of damage to the components due to pressure on the BMU components during installation; at the same time, the fixing plate and the plastic end plate can act as an effective thermal barrier, reducing the temperature heat radiation of the copper busbar and the fuse and affecting the electronic components of the BMU module. The present invention has a simple structure and good heat dissipation effect, can effectively increase the secondary use frequency of the fuse, and is easy to install and maintain, has good stability, is economical, safe and practical, and can well meet the needs of actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a battery structure that facilitates BMU heat dissipation according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the battery structure that is conducive to BMU heat dissipation;

[0024] Figure 3 for Figure 1 Schematic diagram of a partial explosion of the battery structure that facilitates heat dissipation of the BMU;

[0025] Figure 4 A schematic diagram of a partially exploded structure of a battery structure that facilitates heat dissipation of a BMU according to another embodiment. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] like Figures 1 to 3 As shown, an embodiment of the present invention provides a battery structure that is conducive to BMU heat dissipation, including a battery case 10, a plastic end plate 20, a BMU fixing plate 30 and a BMU module 40; the plastic end plate 20 is arranged on an end surface of one end of the battery case 10; the BMU fixing plate 30 is arranged on the side of the plastic end plate 20 away from the battery case 10, and the BMU module 40 is arranged on the side of the BMU fixing plate 30 away from the plastic end plate 20;

[0032] A first notch 21 is provided on the side of the plastic end plate 20 close to the top of the battery box 10, and a second notch 31 is provided on the side of the BMU fixing plate 30 close to the first notch 21, and the first notch 21 and the second notch 31 are overlapped. A collection line terminal 41 is provided on the side of the BMU module 40 close to the BMU fixing plate 30, and the collection line terminal 41 is arranged in the second notch 31.

[0033] As a preferred embodiment, the BMU module 40 is secured to the BMU mounting plate 30 via several screws 32. A first gap (not labeled in the figure) is provided between the BMU module 40 and the BMU mounting plate 30. This first gap, and its controlled distance, reduces contact between components and the mounting plate, minimizing the risk of damage to BMU components caused by pressure during installation. It also provides effective thermal isolation, reducing the impact of heat radiation from the copper busbar and fuse on the BMU module's electronic components.

[0034] As a preferred embodiment, several screws 32 are evenly arranged on the edge of the BMU fixing plate 30; the distance of the first gap is 4.5mm to 5.5mm, preferably 5mm; the acquisition line terminal 41 is a pluggable acquisition terminal. The acquisition line terminal is a pluggable acquisition terminal, which is easy to disassemble and assemble.

[0035] In this application, by placing the acquisition line terminal in the second notch, the acquisition line terminal is exposed at the top of the BMU module, allowing accurate judgment of whether the terminal is properly matched during insertion and removal. At the same time, due to the presence of the second notch, when several screws are evenly arranged on the edge of the BMU fixing plate, some screws can be fixed in the middle and upper part of the BMU module, making the BMU module more secure.

[0036] As a preferred embodiment, the plastic end plate 20 is provided with a fuse 22, a first copper bar 23, a second copper bar 24, and a third copper bar 25. One end of the fuse 22 is connected to the first copper bar 23, and the other end is connected to the second copper bar 24. The first copper bar 23 and the third copper bar 25 are respectively connected to the battery modules (not labeled in the figure) within the battery case 10; the second copper bar 24 is connected to the external terminals. By fixing the fuse to the plastic end plate and placing the plastic end plate at one end of the case, the fuse connection insulation problem is effectively solved while facilitating its installation and removal and maintenance.

[0037] As a preferred embodiment, the plastic end plate 20 is fixed to the end surface of the battery box 10 by a plurality of insulating bolts 26; the plurality of insulating bolts 26 are evenly arranged on the edge of the plastic end plate 20;

[0038] The plastic end plate 20 is provided with a third notch (not marked in the figure), and the fuse 22 is fixed in the third notch through the first copper bar 23 and the second copper bar 24 .

[0039] As a preferred embodiment, the third notch is provided through the plastic end plate 20, and the third notch is adapted to fit the fuse 22. A second gap (not marked in the figure) is provided between the fuse 22 and the third notch. This second gap can effectively improve the heat dissipation effect of the fuse, while providing sufficient space for component installation, effectively saving space in the box and effectively reducing the volume of the box.

[0040] As a preferred embodiment, when the BMU fixing plate 30 is arranged on the plastic end plate 20 to form an accommodating space (not marked in the figure), the fuse 22 and the first copper busbar 23 are both arranged in the accommodating space, and the accommodating space is connected to the first notch.

[0041] As a preferred embodiment, a first clamping position (not marked in the figure) for accommodating the first copper bar 23 is provided at one end corner of the plastic end plate 20, and the first copper bar 23 is fixed to the first clamping position by a first insulating column 231;

[0042] The other end corner of the plastic end plate 20 is provided with a second latch (not marked in the figure) for accommodating the second copper bar 24. The second latch is arranged diagonally to the first latch. The second copper bar 24 is fixed to the second latch by a second insulating column 241.

[0043] A third retaining slot for the third copper bar 25 is located at another corner of the plastic end plate 20. Both the third retaining slot and the first retaining slot are located near the same long side of the plastic end plate 20. The third copper bar 25 is secured to the third retaining slot via a third insulating post 251. This arrangement isolates the copper bar from the BMU module, increasing the electrical clearance between the copper bar and the BMU module. This ensures efficient heat dissipation while enabling a rational layout of various components, effectively saving space, reducing the volume of the battery case, and effectively increasing the energy density of the battery case.

[0044] As a preferred embodiment, the first copper bar 23 and the second copper bar 24 are both positive copper bars, and the third copper bar 25 is a negative copper bar; the first copper bar 23 is connected to the positive electrode of the battery module, and the third copper bar 25 is connected to the negative electrode of the battery module.

[0045] As a preferred embodiment, a cooling fan 50 is further provided on the plastic end plate 20, and is arranged diagonally with respect to the third copper busbar 25. This arrangement ensures efficient heat dissipation while enabling a rational layout of the various components, thereby effectively saving space, reducing the volume of the battery case, and effectively increasing the energy density of the battery case.

[0046] As a preferred embodiment, the battery case 10 includes a cover plate 11, a case 12, and a panel 13. The cover plate 11 covers the top of the case 12. The plastic end plate 20 is provided at one end of the case 12 close to the panel 13. The panel 13 covers the side of the BMU module 40 away from the battery module, and the panel 13 is fixedly connected to the plastic end plate 20. A third gap (not marked in the figure) is provided between the plastic end plate 20 and the cover plate 11. A fourth gap (not marked in the figure) is provided between the plastic end plate 20 and the panel 13. The third and fourth gaps can effectively improve the heat dissipation effect of the fuse and provide sufficient space for component disassembly and assembly, facilitating the maintenance of electronic components such as fuses, thereby reducing maintenance costs.

[0047] In this application, by adjusting the positions of the first copper bar 23 and the third copper bar 25, it is possible to adapt to battery boxes with different connection structures. Figure 2As shown, in this embodiment, the first copper bar 23 and the second copper bar 24 are diagonally arranged on the plastic end plate. At this time, the first copper bar 23 is arranged at the upper right corner of the plastic end plate 20, and the third copper bar 25 is arranged at the upper left corner of the plastic end plate 20.

[0048] In another embodiment, if Figure 4 As shown, the first copper bar 23 and the second copper bar 24 are diagonally arranged on the plastic end plate 20 . At this time, the first copper bar 23 is arranged at the upper left corner of the plastic end plate 20 , and the third copper bar 25 is arranged at the upper right corner of the plastic end plate 20 .

[0049] Unless otherwise specified, the fixing or connection of each component in this application is generally achieved by screws, which is convenient for production and assembly, and also convenient for disassembly and repair when the battery has problems. The utility model has a simple structure, high space utilization, easy installation, good stability, economy and practicality, and has broad application prospects.

[0050] The battery box structure of this application can not only save electricity expenses for users, but also automatically switch to backup power mode during power outages. The system is highly intelligent and can collect operating data in real time and adaptively adjust the operating mode according to the operating status without manual intervention, reducing operation and maintenance costs.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery structure that is beneficial to BMU heat dissipation, characterized in that: The battery pack comprises a battery box, a plastic end plate, a BMU fixing plate and a BMU module; the plastic end plate is arranged on the end surface of one end of the battery box; the BMU fixing plate is arranged on the side of the plastic end plate away from the battery box; and the BMU module is arranged on the side of the BMU fixing plate away from the plastic end plate. A first notch is provided on the side of the plastic end plate close to the top of the battery box, and a second notch is provided on the side of the BMU fixing plate close to the first notch, and the first notch and the second notch are overlapped; a collection line terminal is provided on the side of the BMU module close to the BMU fixing plate, and the collection line terminal is arranged in the second notch.

2. The battery structure that facilitates BMU heat dissipation according to claim 1, characterized in that: The BMU module is fixed to the BMU fixing plate by a plurality of screws, and a first gap is provided between the BMU module and the BMU fixing plate.

3. The battery structure that facilitates BMU heat dissipation according to claim 2, characterized in that: Several screws are evenly arranged on the edge of the BMU fixing plate; the distance of the first gap is 4.5mm to 5.5mm; and the acquisition line terminal is a plug-in acquisition terminal.

4. The battery structure that facilitates BMU heat dissipation according to claim 1, characterized in that: A fuse, a first copper bar, a second copper bar and a third copper bar are provided on the plastic end plate; one end of the fuse is connected to the first copper bar, and the other end is connected to the second copper bar; the first copper bar and the third copper bar are respectively connected to the battery modules in the battery box; the second copper bar is connected to the external terminal.

5. The battery structure that facilitates BMU heat dissipation according to claim 4, characterized in that: The plastic end plate is fixed to the end surface of the battery box by a plurality of insulating bolts; the plurality of insulating bolts are evenly arranged on the edge of the plastic end plate; A third notch is provided on the plastic end plate, and the fuse is fixed in the third notch through the first copper bar and the second copper bar.

6. The battery structure that facilitates BMU heat dissipation according to claim 5, characterized in that: The third notch is provided through the plastic end plate, the third notch is adapted to the fuse, and a second gap is provided between the fuse and the third notch; When the BMU fixing plate is disposed on the plastic end plate to form an accommodating space, the fuse and the first copper busbar are both disposed in the accommodating space, and the accommodating space is communicated with the first notch.

7. The battery structure that facilitates BMU heat dissipation according to claim 4, characterized in that: A first clamping position for accommodating the first copper bar is provided at one end corner of the plastic end plate, and the first copper bar is fixed to the first clamping position via a first insulating column; A second clamping position for accommodating the second copper bar is provided at the other end corner of the plastic end plate, and the second clamping position is arranged diagonally to the first clamping position; the second copper bar is fixed to the second clamping position by a second insulating column; A third clamping position for accommodating the third copper bar is provided at another end corner of the plastic end plate. The third clamping position and the first clamping position are both provided close to the same long side of the plastic end plate. The third copper bar is fixed to the third clamping position through a third insulating column.

8. The battery structure that facilitates BMU heat dissipation according to claim 4, characterized in that: The first copper bar and the second copper bar are both positive copper bars, and the third copper bar is a negative copper bar; the first copper bar is connected to the positive electrode of the battery module, and the third copper bar is connected to the negative electrode of the battery module.

9. The battery structure that facilitates BMU heat dissipation according to claim 4, characterized in that: A heat dissipation fan is also provided on the plastic end plate, and the heat dissipation fan is arranged diagonally to the third copper bar.

10. The battery structure that facilitates BMU heat dissipation according to claim 4, characterized in that: The battery box includes a cover plate, a box body and a panel, the cover plate is covered on the top of the box body; the plastic end plate is arranged at one end of the box body close to the panel, the panel is covered on the side of the plastic end plate away from the battery module, and the panel is fixedly connected to the plastic end plate; a third gap is provided between the plastic end plate and the cover plate; a fourth gap is provided between the plastic end plate and the panel.

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