A whole fixing and installing mechanism of lithium battery module

Abstract

The application discloses a kind of lithium battery module whole fixed mounting mechanism, including shell, multiple square battery cells are arranged in the shell, top cover is arranged on the shell, further comprising: first installation fixed plate, the first installation fixed plate is connected in the right part of shell inside.By first installation fixed plate, second installation fixed plate and top cover and shell form a whole fixed battery cell module design structure, by first pressing plate and second pressing plate, multiple square battery cells can be pressed, by first shock-absorbing plate and second shock-absorbing plate cooperate with shock-absorbing boss, effective buffering and shock absorption can be realized, by first fixed plate and second fixed plate cooperate with pressing beam, effective fixing and limiting can be realized, by first limiting plate and second limiting plate, square battery cell can be limited, the mutual movement between battery cell can be effectively prevented, by simple component, four major core design elements such as anti-vibration, preventing displacement, fixing and pressing can be simultaneously satisfied.

Description

Technical Field

[0001] This invention relates to the field of lithium battery module packaging technology, and in particular to an overall fixing and mounting mechanism for lithium battery modules. Background Technology

[0002] A lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. As a high-efficiency, safe, and compact energy source, lithium batteries are increasingly widely used. Due to their advantages such as small size and light weight, high energy density and power output, low self-discharge rate, environmental friendliness, and long lifespan, lithium batteries are gradually becoming the mainstream power battery. Electric vehicle battery packs consist of multiple battery modules connected in series and parallel; therefore, the battery modules need to be fixed together during battery pack assembly.

[0003] Currently, during the operation of electric vehicles, the power battery module needs to withstand vibration or impact. In order to prevent the battery module from being squeezed and deformed by collision during vehicle operation, and to ensure high voltage safety and reliable connection of the battery assembly structure, the battery module must be firmly installed in the frame of the battery assembly box. In order to ensure the stability of the battery module, multiple sets of fixing components are often set inside the box. However, multiple sets of fixing components will undoubtedly increase the cost. Therefore, it is necessary to provide a new overall fixing and installation mechanism for lithium battery modules to solve the above technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and to propose an overall fixing and mounting mechanism for a lithium battery module. The mechanism includes a housing, inside which multiple square battery cells are disposed, and a top cover on the housing. It also includes: a first mounting plate connected to the right side of the inner side of the housing, used to limit and fix the right side of the square battery cell assembly; and a second mounting plate connected to the left side of the inner side of the housing, used to limit and fix the left side of the square battery cell assembly.

[0005] The first mounting plate includes a first plate body, on which a plurality of first clamping plates, first shock-absorbing plates and first fixing plates are disposed;

[0006] The second mounting plate includes a second plate body, on which multiple second clamping plates, second shock-absorbing plates, and second fixing plates are provided.

[0007] As a further description of the above technical solution: a support plate is provided at the bottom of the outer shell, the support plate is detachably connected to the first mounting plate and the second mounting plate by bolts, and multiple support plates are provided below the support plate.

[0008] As a further description of the above technical solution: the square battery cell is provided with multiple clamping beams, and the two ends of the clamping beams are detachably connected to the first fixing plate and the second fixing plate, respectively.

[0009] As a further description of the above technical solution: the top cover includes a top plate, a shock-absorbing boss and a crash barrier. The shock-absorbing boss is connected to the inner side of the top plate, and the crash barrier is connected to the outer side of the top plate. The top plate has a fixing hole for connecting to the outer shell, and the top plate has a fuse access port, a signal transceiver port and a cable slot.

[0010] As a further description of the above technical solution: a mounting plate is connected to the side of the first plate away from the second plate, an insulating plate is connected below the first clamping plate, and the first shock-absorbing plate is located inside the shock-absorbing boss.

[0011] As a further description of the above technical solution: the first pressing plate is located on the side of the first plate body closer to the second plate body, the first fixing plate is located on the side of the first plate body away from the second plate body, and the first pressing plate, the first shock-absorbing plate and the first fixing plate are alternately arranged on the first plate body.

[0012] As a further description of the above technical solution: the second pressing plate is connected to the insulating plate below, the second damping plate is located inside the damping boss, the second pressing plate is located on the side of the second plate body closer to the first plate body, the second fixing plate is located on the side of the second plate body away from the first plate body, and the second pressing plate, the second damping plate and the second fixing plate are alternately arranged on the second plate body.

[0013] As a further description of the above technical solution: a plurality of first limiting plates are provided on the side of the first plate near the second plate, and a plurality of second limiting plates are provided on the side of the second plate near the first plate.

[0014] As a further description of the above technical solution: a cavity is formed between the outer shell and the first plate and the second plate; multiple ventilation slots are provided on the support plate; multiple through holes are provided on the support plate; a first heat dissipation component is provided below the top cover; and a second heat dissipation component is detachably connected to the cavity.

[0015] As a further description of the above technical solution: the first damping plate and the second damping plate are detachably connected to a buffer member on the side near the damping boss.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] 1. This invention features a design structure that integrates a first mounting plate, a second mounting plate, a top cover, and a housing to form a single, fixed battery cell module. Multiple square battery cells are compressed using first and second clamping plates on the first and second plates. Effective cushioning and shock absorption are achieved through the cooperation of first and second damping plates with damping bosses. Effective fixing and limiting are achieved through the cooperation of first and second fixing plates with a clamping beam. Multiple square battery cells between the first and second plates are limited by first and second limiting plates, effectively preventing movement between the battery cells. These simple components simultaneously fulfill the four core design elements of vibration resistance, displacement prevention, fixation, and compression. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an integral fixed installation mechanism according to the present invention;

[0019] Figure 2 This is an internal schematic diagram of an integral fixed installation mechanism according to the present invention;

[0020] Figure 3 This is an exploded view of an integral fixing installation mechanism according to the present invention;

[0021] Figure 4 This is a cross-sectional view of an integral fixing installation mechanism according to the present invention;

[0022] Figure 5 for Figure 1 A schematic diagram of the first mounting plate in the overall fixed installation mechanism;

[0023] Figure 6 for Figure 1 A schematic diagram of the structure of the second mounting plate in the overall fixed installation mechanism;

[0024] Figure 7 for Figure 1 A schematic diagram of the installation structure of the first and second mounting plates in the overall fixed installation mechanism;

[0025] Figure 8 for Figure 5 A magnified view of a portion of point A in the overall fixed installation mechanism;

[0026] Figure 9 for Figure 1 A schematic diagram of the support plate in the overall fixed installation mechanism;

[0027] Figure 10 for Figure 1 A schematic diagram of the installation structure of the support plate in the overall fixed installation mechanism.

[0028] Legend:

[0029] 1. Outer shell; 2. Square battery cell; 3. Top cover; 4. First mounting plate; 5. Second mounting plate; 6. Support plate; 7. Bolt; 8. Support plate; 9. Pressing beam; 10. Mounting plate; 11. Insulating plate; 12. Cavity; 13. Vent groove; 14. First heat dissipation assembly; 15. Second heat dissipation assembly; 16. Buffer; 17. Through hole; 31. Top plate; 32. Shock-absorbing boss; 33. Anti-collision baffle; 34. Fixing hole; 35. Fuse access port; 36. Signal transceiver port; 37. Cable slot; 41. First plate; 42. First pressing plate; 43. First shock-absorbing plate; 44. First fixing plate; 45. First limiting plate; 51. Second plate; 52. Second pressing plate; 53. Second shock-absorbing plate; 54. Second fixing plate; 55. Second limiting plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Please see Figure 1-10This invention provides a technical solution: a lithium battery module overall fixing and mounting mechanism of this invention includes a housing 1, a plurality of square battery cells 2 disposed inside the housing 1, a top cover 3 disposed on the housing 1, and further includes: a first mounting and fixing plate 4, which is connected to the right side of the inner side of the housing 1 and is used to limit and fix the right side of the square battery cell assembly; a second mounting and fixing plate 5, which is connected to the left side of the inner side of the housing 1 and is used to limit and fix the left side of the square battery cell assembly; the first mounting and fixing plate 4 includes a first plate body 41, on which a plurality of first pressing plates 42, first shock-absorbing plates 43 and first fixing plates 44 are disposed; the second mounting and fixing plate 5 includes a second plate body 51, on which a plurality of second pressing plates 52, second shock-absorbing plates 53 and second fixing plates 54 are disposed.

[0034] In this embodiment, the first mounting plate 4, the second mounting plate 5, and the top cover 3 form an integral fixed battery cell module design with the outer shell 1. Multiple square battery cells 2 are pressed together by the first clamping plate 42 and the second clamping plate 52 on the first plate 41 and the second plate 51. Effective buffering and shock absorption are achieved by the first damping plate 43 and the second damping plate 53 cooperating with the damping boss 32. Effective fixing and limiting are achieved by the first fixing plate 44 and the second fixing plate 54 cooperating with the clamping beam 9. The first limiting plate 45 and the second limiting plate 55 limit the multiple square battery cells 2 between the first plate 41 and the second plate 51, effectively preventing mutual movement between the battery cells. By using simple components, the four core design elements of vibration resistance, displacement prevention, fixing, and clamping are simultaneously met. This simplifies the structure, reduces the number of components, and achieves an overall cost reduction of approximately 70%, ensuring the reliability and safety of the battery cell module and meeting the core design requirements of vibration resistance, fixing, and clamping.

[0035] like Figure 2 and Figure 3As shown, specifically, a support plate 6 is provided at the bottom of the outer casing 1. The support plate 6 is detachably connected to the first mounting plate 4 and the second mounting plate 5 by bolts 7. Multiple support plates 8 are provided below the support plate 6. Multiple clamping beams 9 are provided on the square battery cell 2. The two ends of the clamping beams 9 are detachably connected to the first mounting plate 44 and the second mounting plate 54 respectively. The support plate 6 is located at the bottom of the outer casing 1 and is detachably connected to the first mounting plate 4 and the second mounting plate 5 by bolts 7. This design facilitates maintenance or replacement when needed. Multiple support plates 8 are located below the tray 6, providing additional stability and support to ensure the overall structural integrity. Multiple clamping beams 9 are located above the square battery cell 2, with their ends detachably connected to the first fixing plate 44 and the second fixing plate 54, respectively. This ensures that the battery cell will not shift due to vibration or thermal expansion during operation. The combination of the tray and support plates provides a robust support system that can effectively withstand various forces during battery cell operation, thereby preventing deformation or damage. The connection between the clamping beams and the fixing plates ensures that the battery cell is firmly fixed under any circumstances, preventing displacement or misalignment caused by external factors, thus improving the safety and reliability of the battery pack. Through effective support and limiting mechanisms, not only is the stability and safety of the square battery cell ensured, but maintenance and heat dissipation performance are also optimized, making the entire device more reliable and efficient in practical applications.

[0036] like Figure 1 and Figure 8 As shown, specifically, the top cover 3 includes a top plate 31, a shock-absorbing boss 32, and a crash barrier 33. The shock-absorbing boss 32 is connected to the inner side of the top plate 31, and the crash barrier 33 is connected to the outer side of the top plate 31. The top plate 31 has a fixing hole 34 for connecting to the outer shell 1, and also has a fuse access port 35, a signal transceiver port 36, and a cable slot 37. The top plate 31 is the main load-bearing structure of the top cover 3, connected to the outer shell 1, and provides overall stability. The shock-absorbing boss 32 is connected to the inner side of the top plate 31 and is designed in the shape of a boss, intended to... To enhance shock absorption, absorb stress caused by external impacts or vibrations, and protect the internal battery cells, the anti-collision baffle 33 is installed on the outside of the top plate 31. It is responsible for preventing damage caused by external object impacts and provides additional physical protection for the lithium battery module. The shock-absorbing boss 32, through its raised design, disperses the impact force over a larger area, further improving the stability of the battery module in dynamic environments. The presence of the anti-collision baffle 33 can effectively prevent damage from accidental impacts or external forces, providing additional protection for the safety of the battery module.

[0037] like Figure 5 and Figure 6As shown, specifically, a mounting plate 10 is connected to the side of the first plate 41 away from the second plate 51; an insulating plate 11 is connected below the first clamping plate 42; a first damping plate 43 is located inside the damping boss 32; the first clamping plate 42 is located on the side of the first plate 41 close to the second plate 51; and a first fixing plate 44 is located on the side of the first plate 41 away from the second plate 51. The first clamping plate 42, the first damping plate 43, and the first fixing plate 44 are alternately arranged on the first plate 41. The second clamping plate 52 is connected to the insulating plate 11 below; the second damping plate 53 is located inside the damping boss 32; the second clamping plate 52 is located on the side of the second plate 51 close to the first plate 41; and the second fixing plate 54 is located on the side of the second plate 51 away from the first plate 41. The second clamping plate 52, the second damping plate 53, and the second fixing plate 54 are alternately arranged on the second plate 51.

[0038] In this embodiment, the first clamping plate 42, the first damping plate 43, and the first fixing plate 44 are alternately arranged on the first plate body 41, and the second clamping plate 52, the second damping plate 53, and the second fixing plate 54 are alternately arranged on the second plate body 51. The alternating arrangement ensures the fastening and support of the first and second plates, enhances the overall structural strength, and reduces the risk of deformation. The design of the damping plate can effectively absorb vibration, protect the battery cell and other components from mechanical impact, and improve the service life of the equipment. The use of the insulating plate 11 ensures electrical safety, prevents the risk of short circuit, and enhances the safety of the system.

[0039] like Figure 6 and Figure 7 As shown, specifically, the first plate 41 is provided with multiple first limiting plates 45 on the side near the second plate 51, and the second plate 51 is provided with multiple second limiting plates 55 on the side near the first plate 41. The multiple first limiting plates 45 and multiple second limiting plates 55 can limit the multiple square cells 2 between the first plate 41 and the second plate 51, which can effectively prevent the cells from moving relative to each other, ensuring the stability and safety of the battery pack during use. Through the physical restriction of the limiting plates, the cells are prevented from shifting under the influence of vibration, temperature changes or other external factors, thereby improving the reliability of the entire device.

[0040] like Figure 9 and Figure 10As shown, specifically, cavities 12 are formed between the outer shell 1 and the first plate 41 and the second plate 51. Multiple ventilation slots 13 are provided on the support plate 6, and multiple through holes 17 are provided on the support plate 8. A first heat dissipation component 14 is provided below the top cover 3, and a second heat dissipation component 15 is detachably connected to the cavity 12. The cavity 12 formed between the outer shell 1 and the first plate 41 and the second plate 51 facilitates air circulation and accommodates the heat dissipation component. The first heat dissipation component 14 can dissipate heat above the square battery cell 2. The second heat dissipation component 15 blows out air through multiple through holes 17 on the support plate 8 and multiple ventilation slots 13 on the support plate 6 to enter below the square battery cell 2, enhancing the heat dissipation effect.

[0041] like Figure 7 and Figure 8 As shown, specifically, the first damping plate 43 and the second damping plate 53 are detachably connected to a buffer 16 near the damping boss 32; the buffer 16 can be a damping spring, which can absorb the vibration after the damping boss 32, thereby enhancing the damping effect of the mechanism.

[0042] Working Principle: The first mounting plate 4, the second mounting plate 5, and the top cover 3, together with the outer shell 1, form an integrated structure for fixing the battery cell module. Multiple square battery cells 2 are pressed together by the first clamping plate 42 and the second clamping plate 52 on the first plate 41 and the second plate 51. Effective buffering and shock absorption are achieved by the first damping plate 43 and the second damping plate 53 in conjunction with the damping boss 32. Effective fixing and limiting are achieved by the first fixing plate 44 and the second fixing plate 54 in conjunction with the clamping beam 9. The first limiting plate 45 and the second limiting plate 55 limit the multiple square battery cells 2 between the first plate 41 and the second plate 51, effectively preventing movement between the battery cells. By using simple components, the four core design elements of vibration resistance, displacement prevention, fixing, and clamping are simultaneously met, simplifying the structure, reducing the number of components, and achieving an overall cost reduction of approximately 70%.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A lithium battery module integral fixing and mounting mechanism, characterized in that, The system includes a housing (1), inside which are disposed a plurality of square battery cells (2), and a top cover (3) on which the housing (1) is disposed, and further includes: The top cover (3) includes a top plate (31) and a shock-absorbing boss (32), the shock-absorbing boss (32) being connected to the inside of the top plate (31); The first mounting plate (4) is connected to the right side of the inner side of the outer casing (1). The first mounting plate (4) is used to limit and fix the right side of the square battery cell assembly. The second mounting plate (5) is connected to the left side of the inner side of the outer casing (1) and the first mounting plate (4) is used to limit and fix the left side of the square battery cell assembly. The first mounting plate (4) includes a first plate body (41), on which a plurality of first clamping plates (42), first shock-absorbing plates (43) and first fixing plates (44) are provided; The second mounting plate (5) includes a second plate body (51), on which a plurality of second clamping plates (52), second shock-absorbing plates (53) and second fixing plates (54) are provided; The first damping plate (43) and the second damping plate (53) cooperate with the damping boss (32) to achieve damping; The first pressing plate (42) is located on the side of the first plate (41) close to the second plate (51), and the first fixing plate (44) is located on the side of the first plate (41) away from the second plate (51). The first pressing plate (42), the first damping plate (43) and the first fixing plate (44) are alternately arranged on the first plate (41). The second clamping plate (52) is connected to the insulating plate (11) below. The second damping plate (53) is located inside the damping boss (32). The second clamping plate (52) is located on the side of the second plate (51) close to the first plate (41). The second fixing plate (54) is located on the side of the second plate (51) away from the first plate (41). The second clamping plate (52), the second damping plate (53) and the second fixing plate (54) are alternately arranged on the second plate (51). The first plate (41) is provided with a plurality of first limiting plates (45) on the side near the second plate (51), and the second plate (51) is provided with a plurality of second limiting plates (55) on the side near the first plate (41). The square battery cell (2) is provided with multiple clamping beams (9), and the two ends of the clamping beams (9) are detachably connected to the first fixing plate (44) and the second fixing plate (54) respectively.

2. The lithium battery module integral fixing and mounting mechanism according to claim 1, characterized in that: The bottom of the outer shell (1) is provided with a support plate (6), which is detachably connected to the first mounting plate (4) and the second mounting plate (5) by bolts (7), and multiple support plates (8) are provided below the support plate (6).

3. The lithium battery module integral fixing and mounting mechanism according to claim 1, characterized in that: The top cover (3) also includes a crash baffle (33), which is connected to the outside of the top plate (31). The top plate (31) has a fixing hole (34) for connecting to the outer shell (1), and the top plate (31) has a fuse inspection port (35), a signal transceiver port (36) and a cable slot (37).

4. The lithium battery module overall fixing and mounting mechanism according to claim 1, characterized in that: An mounting plate (10) is connected to the side of the first plate (41) away from the second plate (51), an insulating plate (11) is connected below the first clamping plate (42), and the first shock-absorbing plate (43) is located inside the shock-absorbing boss (32).

5. The lithium battery module integral fixing and mounting mechanism according to claim 2, characterized in that: A cavity (12) is formed between the outer shell (1), the first plate (41), and the second plate (51). A plurality of ventilation slots (13) are provided on the support plate (6). A plurality of through holes (17) are provided on the support plate (8). A first heat dissipation component (14) is provided below the top cover (3). A second heat dissipation component (15) is detachably connected inside the cavity (12).

6. The lithium battery module integral fixing and mounting mechanism according to claim 1, characterized in that: The first damping plate (43) and the second damping plate (53) are detachably connected to a buffer (16) on the side near the damping boss (32).

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