A connecting bracket and a battery assembly

Abstract

The application discloses a connecting support and a battery assembly. The connecting support comprises a support body and a circuit assembly. The support body comprises a main body part and a blocking part. The main body part is used for mounting an explosion-proof valve of a battery. The blocking part is connected with the main body part. The circuit assembly is at least partially used for shielding the explosion-proof valve. The blocking part is located between the circuit assembly and the explosion-proof valve and is spaced from the circuit assembly and the explosion-proof valve, so as to isolate the sprayed material of the explosion-proof valve from the circuit assembly when the explosion-proof valve is depressurized. Compared with the prior art, the application successfully isolates the direct contact between the sprayed material and the circuit assembly by arranging the blocking part between the circuit assembly and the explosion-proof valve. The blocking part effectively protects the circuit assembly, ensures that the circuit assembly can still work normally under extreme conditions, and provides stable voltage monitoring and signal transmission functions. The safety and reliability of the battery assembly are significantly improved by using the connecting support.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and in particular to a connecting bracket and battery assembly. Background Technology

[0002] In the development of battery technology today, battery cells are widely used in various electronic devices and electric vehicles due to their high energy density and compact design.

[0003] In existing technologies, battery cells are often mounted with plastic brackets containing explosion-proof slots for mounting the battery's explosion-proof valve. However, due to space constraints, the flexible printed circuit board (FPC) often partially covers the explosion-proof valve during installation. This design does not pose a problem during normal battery operation, but when excessive internal pressure causes the explosion-proof valve to activate, the ejected high-temperature corrosive substances may directly impact and burn the FPC covering it. This can not only cause the FPC to fail, thus interrupting the monitoring and control of the battery cell voltage, but may also lead to more serious safety hazards. Utility Model Content

[0004] In view of the shortcomings of the prior art, this application provides a connecting bracket and battery assembly that can effectively protect flexible printed circuit boards (FPCs) from the impact of substances ejected from explosion-proof valves.

[0005] To achieve the above objectives, this application adopts the following technical solution: A connecting bracket includes a bracket body and a circuit assembly. The bracket body includes a main portion and a blocking portion. The main portion is used to install an explosion-proof valve for a battery, and the blocking portion is connected to the main portion. The circuit assembly is at least partially used to shield the explosion-proof valve. The blocking portion is located between and spaced between the circuit assembly and the explosion-proof valve to isolate substances ejected from the explosion-proof valve from the circuit assembly when the explosion-proof valve is depressurized.

[0006] In one embodiment, the blocking part includes an enclosure and a bottom. The enclosure is connected to the main body, and the bottom is connected to the enclosure. The enclosure and the bottom enclose a pressure relief space facing the explosion-proof valve. The circuit assembly is disposed on the side of the bottom away from the pressure relief space.

[0007] In one embodiment, the enclosure forms the sidewall of the pressure relief space, the bottom forms the bottom of the pressure relief space, and the enclosure has at least a partial opening along its enclosure direction.

[0008] In one embodiment, the main body has a plurality of pressure relief spaces distributed along its length, and the openings face the width direction of the main body.

[0009] In one embodiment, the enclosure includes a first part and a second part, with the first part connected to opposite sides of the second part, the second part being disposed opposite to the opening, and the second part being planar.

[0010] In one embodiment, the enclosure includes a transition portion, through which the first portion and the second portion are connected, and the transition portion is arc-shaped.

[0011] In one embodiment, the length of the opening is less than one-third of the length of the enclosure portion along the width direction of the main body portion.

[0012] In one embodiment, the depth of the pressure relief space is 5mm to 7mm.

[0013] In one embodiment, the bracket body includes a fixing part connected to the main body, and the circuit assembly has a fixing groove in which the fixing part is inserted.

[0014] In one embodiment, the connecting bracket includes an insulating member disposed between the blocking portion and the circuit assembly.

[0015] This application also adopts the following technical solution to provide a battery assembly, including a connecting bracket and a battery in any of the above embodiments, wherein the battery is connected to the main body of the bracket and electrically connected to the circuit assembly, and the explosion-proof valve of the battery is connected to the main body and is disposed opposite to the blocking part.

[0016] The beneficial effects of this application are as follows: This application provides a connecting bracket and a battery assembly. The connecting bracket includes a bracket body and a circuit assembly. The bracket body includes a main body portion and a blocking portion. The main body portion is used to install the explosion-proof valve of the battery, and the blocking portion is connected to the main body portion. The circuit assembly is at least partially used to shield the explosion-proof valve. The blocking portion is located between the circuit assembly and the explosion-proof valve and separates the circuit assembly and the explosion-proof valve, so as to isolate the material ejected from the explosion-proof valve from the circuit assembly when the explosion-proof valve is depressurized. Compared with the prior art, this application, by setting a blocking portion between the circuit assembly and the explosion-proof valve, successfully isolates the direct contact between the ejected material and the circuit assembly. The blocking portion effectively protects the circuit assembly, ensuring that it can still work normally under extreme conditions, and providing stable voltage monitoring and signal transmission functions. Using this connecting bracket significantly improves the safety and reliability of the battery assembly. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a connecting bracket according to this application is shown; Figure 2An exploded view of the components of a connecting bracket according to this application is shown; Figure 3 It shows Figure 2 Enlarged view of point A in the image; Figure 4 Another structural schematic diagram of a connecting bracket according to this application is shown; Figure 5 It shows Figure 4 Enlarged view of point B in the image; Figure 6 A schematic diagram of the back structure of a connecting bracket according to this application is shown; Figure 7 It shows Figure 6 Enlarged view of point C in the image; Reference numerals: 1. Support body; 11. Main body; 111. Pressure relief space; 12. Blocking part; 121. Enclosing part; 1211. Opening; 1212. First part; 1213. Second part; 1214. Transition part; 122. Bottom; 13. Fixing part; 14. Mounting hole; 2. Circuit assembly; 21. Fixing groove; 3. Insulating component; X, length direction; Y, width direction. Detailed Implementation

[0018] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0019] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] See Figure 1This application provides a battery assembly, including a connecting bracket and a battery. The connecting bracket includes a bracket body 1 and a circuit assembly 2. The bracket body 1 has a mounting hole 14, and the battery is disposed in the mounting hole 14 of the bracket body 1. The circuit assembly 2 is connected to the bracket body 1 and electrically connected to the battery. The circuit assembly 2 includes an FPC (flexible printed circuit board), whose functions include voltage monitoring and data transmission.

[0022] See Figure 1 and Figure 2 The bracket body 1 includes a main body 11 and a blocking part 12. The main body 11 is used to install the explosion-proof valve of the battery, and the blocking part 12 is connected to the main body 11. The circuit assembly 2 is at least partially used to shield the explosion-proof valve. The blocking part 12 is located between the circuit assembly 2 and the explosion-proof valve and spacees the circuit assembly 2 and the explosion-proof valve, so as to isolate the material ejected from the explosion-proof valve from the circuit assembly 2 when the explosion-proof valve is depressurized.

[0023] In practical applications, the battery is equipped with an explosion-proof valve. When the battery is installed in the mounting hole 14, due to the limited space in the main body 11, the circuit assembly 2 is laid on the main body 11. At least part of the circuit assembly 2 will block the explosion-proof valve. The blocking part 12 extends from the main body 11 and is located between the circuit assembly 2 and the explosion-proof valve, forming a physical barrier. The design of the blocking part 12 ensures that even when the explosion-proof valve is activated, the ejected material will not directly contact the circuit assembly 2, thereby avoiding the burning and failure of the circuit assembly 2.

[0024] Compared to existing technologies, this application successfully isolates the ejected material from direct contact with the circuit assembly 2 by setting a blocking part 12 between the circuit assembly 2 and the explosion-proof valve. The blocking part 12 effectively protects the circuit assembly 2, ensuring its normal operation under extreme conditions and providing stable voltage monitoring and signal transmission functions. The use of this connection bracket significantly improves the safety and reliability of the battery assembly.

[0025] See Figure 2 and Figure 3 The bracket body 1 includes a fixing part 13, which is connected to the main body 11. The circuit assembly 2 has a fixing groove 21, and the fixing part 13 is inserted into the fixing groove 21.

[0026] In practical applications, the fixing part 13 can be integrally formed with the main body 11, and the circuit assembly 2 is provided with a fixing groove 21 that matches the fixing part 13. The opening position and size of the fixing groove 21 are precisely designed so that the fixing part 13 can be smoothly inserted and securely installed. This design ensures that the circuit assembly 2 will not easily shift or fall off due to vibration or other external forces after installation.

[0027] See Figure 4 and Figure 5The blocking part 12 includes an enclosure part 121 and a bottom part 122. The enclosure part 121 is connected to the main body part 11, and the bottom part 122 is connected to the enclosure part 121. The enclosure part 121 and the bottom part 122 enclose and form a pressure relief space 111 facing the explosion-proof valve. The circuit assembly 2 is disposed on the side of the bottom part 122 away from the pressure relief space 111.

[0028] In practical applications, the enclosure 121 can be integrally formed with the main body 11 and extend away from the main body 11, forming a portion surrounding the explosion-proof valve. The bottom 122 is connected to the enclosure 121, forming a semi-closed or closed structure. This structural design creates a pressure relief space 111 between the enclosure 121 and the bottom 122, facing the explosion-proof valve. The explosion-proof valve is located within the pressure relief space 111, providing a dedicated area to contain the gas and debris released during pressure relief, preventing debris from splashing and affecting the normal function of other battery cells. The circuit assembly 2 is located on the other side of the bottom 122, i.e., the side facing away from the pressure relief space 111. This ensures that the circuit assembly 2 is not directly impacted by the pressure relief substance when the explosion-proof valve is activated, thus preventing damage.

[0029] See again Figure 5 The enclosure 121 forms the sidewall of the pressure relief space 111, and the bottom 122 forms the bottom 122 of the pressure relief space 111. The enclosure 121 has at least a partial opening 1211 along its enclosure direction.

[0030] In practical applications, the enclosure 121 is designed with an opening 1211 at least partially along its enclosure direction. The opening 1211 provides an additional pressure relief path for the depressurization process of the explosion-proof valve, ensuring that the pressure in the depressurization space 111 can be released quickly and safely when the explosion-proof valve is activated. The bottom 122, as the bottom of the depressurization space 111, serves to support and isolate the depressurized material.

[0031] It should be noted that the opening 1211 on the enclosure 121 can be designed as a single hole or multiple small holes. The specific shape and size can be adjusted according to the pressure relief requirements to ensure that the overall strength of the structure will not be negatively affected during pressure relief.

[0032] See again Figure 5 The main body 11 has multiple pressure relief spaces 111 distributed along its length direction, with openings 1211 facing the width direction of the main body 11.

[0033] To describe clearly, Figure 1 The X direction represents the length direction of the main body 11, and the Y direction represents the width direction of the main body 11.

[0034] In practical applications, the main body 11 has multiple pressure relief spaces 111 distributed along its length, and the opening 1211 faces the width direction of the main body 11. That is to say, the opening 1211 faces away from adjacent pressure relief spaces 111, thus preventing the pressure relief material ejected from a certain pressure relief space 111 from falling into the adjacent pressure relief space 111, and ensuring that the damage of a single cell will not affect the other cells.

[0035] See again Figure 5 The enclosure 121 includes a first part 1212 and a second part 1213. The first part 1212 is connected to the opposite sides of the second part 1213. The second part 1213 is disposed opposite to the opening 1211 and is planar.

[0036] In practical applications, the enclosure 121 includes a first part 1212 and a second part 1213. The first part 1212 is connected to the opposite sides of the second part 1213, thus forming a stable structural frame. This design not only enhances the mechanical strength of the enclosure 121 but also effectively supports the formation of the pressure relief space 111. After the battery and the connecting bracket are assembled, the opening 1211 usually faces upward. Therefore, the second part 1213 is positioned opposite the opening 1211 and designed as a plane. With this design, when the explosion-proof valve is activated, the gas will be ejected upward from the opening 1211, and the ejected debris will fall into the enclosure 121. The plane shape of the second part 1213 makes it easier to accommodate and collect the debris, preventing debris rebound or diffusion.

[0037] Meanwhile, the second part 1213 is set between the pressure relief space 111 and the mounting hole 14, which isolates the pressure relief space 111 and the mounting hole 14, preventing debris from falling into the mounting hole 14 and causing a short circuit in the battery cell.

[0038] See again Figure 5 The enclosure portion 121 includes a transition portion 1214, and the first portion 1212 and the second portion 1213 are connected by the transition portion 1214, which is arc-shaped.

[0039] In practical applications, an arc-shaped transition section 1214 is introduced between the first part 1212 and the second part 1213. On the one hand, this helps guide debris to fall onto the second part 1213 when the valve is sprayed. On the other hand, it reduces the occurrence of sharp corners or edges, thereby reducing stress concentration.

[0040] See Figure 6 and Figure 7 Along the width direction of the main body 11, the length of the opening 1211 is less than one-third of the length of the enclosure 121.

[0041] To describe clearly, Figure 7In the diagram, L1 represents the length of the opening 1211, and L2 represents the length of the enclosure 121. In practical applications, the length of the opening 1211 is specifically limited in the design of the enclosure 121. Specifically, along the width direction of the main body 11, the length of the opening 1211 is designed to be less than one-third of the length of the enclosure 121. This limitation ensures that the enclosure 121 maintains its structural integrity and strength while providing necessary ventilation or pressure relief functions, avoiding structural weakening caused by an excessively large opening 1211.

[0042] In one embodiment, the depth of the pressure relief space 111 is 5mm to 7mm, such as 5mm, 5.5mm, 6mm, 6.5mm, 7mm, etc. The presence of the pressure relief space 111 provides a buffer area for the expansion of internal gas or liquid. At the same time, this depth of the pressure relief space 111 meets the valve height requirements of various battery models, avoiding the situation where the pressure relief space 111 is too shallow and cannot accommodate a sufficient expansion area, which may lead to ineffective pressure release. If the pressure relief space 111 is too deep, it may weaken the overall strength and stability of the equipment or structure, and increase the overall volume of the battery assembly.

[0043] See again Figure 2 The connecting bracket includes an insulating component 3, which is disposed between the blocking part 12 and the circuit assembly 2.

[0044] In practical applications, the insulating component 3 is positioned between the blocking part 12 and the circuit assembly 2, providing additional protection. In the event of failure of the blocking part 12 due to accident or long-term use, the insulating component 3 acts as a second line of defense, effectively blocking substances leaking from the spray valve. Through this dual protection design, the insulating component 3 not only enhances the overall safety of the system but also extends the service life of the circuit assembly 2, ensuring reliable operation in various working environments.

[0045] Understandably, the insulating component 3 can be a structure such as a mica sheet or a ceramic sheet, which has excellent electrical insulation properties and can effectively prevent electrical short circuits or leakage.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0048] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A connecting bracket, characterized in that, include: The bracket body includes a main body and a blocking part, wherein the main body is used to install the explosion-proof valve of the battery, and the blocking part is connected to the main body; A circuit assembly, at least partially used to shield the explosion-proof valve, the blocking portion being located between and spaced between the circuit assembly and the explosion-proof valve, for isolating the material ejected from the explosion-proof valve from the circuit assembly when the explosion-proof valve is depressurized.

2. The connecting bracket according to claim 1, characterized in that, The blocking part includes an enclosure and a bottom. The enclosure is connected to the main body, and the bottom is connected to the enclosure. The enclosure and the bottom enclose a pressure relief space facing the explosion-proof valve. The circuit assembly is disposed on the side of the bottom away from the pressure relief space.

3. The connecting bracket according to claim 2, characterized in that, The enclosure forms the sidewall of the pressure relief space, the bottom forms the bottom of the pressure relief space, and the enclosure has at least a partial opening along its enclosure direction.

4. The connecting bracket according to claim 3, characterized in that, The main body has a plurality of pressure relief spaces distributed along its length, and the openings face the width direction of the main body.

5. The connecting bracket according to claim 3, characterized in that, The enclosure includes a first part and a second part, with the first part connected to the opposite sides of the second part, and the second part being disposed opposite to the opening. The second part is planar.

6. The connecting bracket according to claim 5, characterized in that, The enclosing portion includes a transition portion, through which the first portion and the second portion are connected, and the transition portion is arc-shaped.

7. The connecting bracket according to claim 3, characterized in that, Along the width direction of the main body, the length of the opening is less than one-third of the length of the enclosure.

8. The connecting bracket according to any one of claims 2 to 7, characterized in that, The depth of the pressure relief space is 5mm to 7mm.

9. The connecting bracket according to any one of claims 1 to 7, characterized in that, The bracket body includes a fixing part, which is connected to the main body. The circuit assembly has a fixing groove, and the fixing part is inserted into the fixing groove.

10. The connecting bracket according to any one of claims 1 to 7, characterized in that, The connecting bracket includes an insulating element disposed between the blocking portion and the circuit assembly.

11. A battery assembly, characterized in that, The device includes a connecting bracket as described in any one of claims 1 to 10 and a battery, wherein the battery is connected to the main body of the bracket and electrically connected to the circuit assembly, and the explosion-proof valve of the battery is connected to the main body and disposed opposite to the blocking part.

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