A battery power distribution unit, a power battery, and a vehicle

Abstract

This application relates to the field of battery technology, specifically providing a battery power distribution unit, a power battery, and a vehicle. The battery power distribution unit includes: a bottom shell with an open upper end, the bottom shell including a receiving cavity; a control circuit board connected to the upper end of the bottom shell; a pre-charge circuit module located in the receiving cavity, the pre-charge circuit module including connection terminals that pass through the control circuit board and are electrically connected to the control circuit board; and a buffer pad sandwiched between the pre-charge circuit module and the opposing cavity walls of the receiving cavity. In this application, the connection terminals of the pre-charge circuit module pass through the control circuit board and are electrically connected to the control circuit board. This through-type connection method can better resist the stress caused by vibration and reduce the possibility of loose connection. The buffer pad can effectively isolate the direct contact between the pre-charge circuit module and the bottom shell, absorb and disperse the stress generated during vibration, reduce the electrical performance fluctuations caused by vibration, and ensure the reliability and electrical performance of the battery power distribution unit.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery power distribution unit, a power battery, and a vehicle. Background Technology

[0002] In the battery power distribution unit of related technologies, the precharge circuit module is integrated into the control circuit board. During vibration, there will be certain stress at the connection between the precharge circuit module and the control circuit board. Over time, the connection between the precharge circuit module and the control circuit board may loosen, affecting the stability of the electrical connection. Utility Model Content

[0003] The purpose of this application is to provide a battery power distribution unit, a power battery, and a vehicle that improves the stability of electrical connections.

[0004] To address the aforementioned technical problems, this application provides a battery power distribution unit, comprising:

[0005] A bottom shell, the upper end of which is an open end, and the bottom shell includes a receiving cavity;

[0006] A control circuit board is connected to the upper end of the bottom shell;

[0007] A pre-charge circuit module is located in the receiving cavity. The pre-charge circuit module includes a connection terminal that passes through the control circuit board and is electrically connected to the control circuit board.

[0008] A buffer pad is sandwiched between the opposing cavity walls of the precharge circuit module and the receiving cavity.

[0009] In the battery power distribution unit of this application, the connection terminals of the precharge circuit module pass through the control circuit board and are electrically connected to the control circuit board. This through-connection method can better resist the stress caused by vibration and reduce the possibility of loose connection. At the same time, the buffer pad is sandwiched between the precharge circuit module and the relative cavity wall of the receiving cavity. The buffer pad can effectively isolate the direct contact between the precharge circuit module and the bottom shell, absorb and disperse the stress generated during vibration, reduce the impact of vibration on the connection between the precharge circuit module and the control circuit board, reduce the fluctuation of electrical performance caused by vibration, and ensure the reliability and electrical performance of the battery power distribution unit.

[0010] Optionally, the precharge circuit module includes a precharge relay and a precharge resistor, with a portion of the buffer pad sandwiched between the precharge relay and the opposite cavity wall of the receiving cavity, and a portion of the buffer pad sandwiched between the precharge resistor and the opposite cavity wall of the receiving cavity.

[0011] Optionally, the number of buffer pads is two, one of which is sandwiched between the precharge relay and the opposite cavity wall of the receiving cavity, and the other of which is sandwiched between the precharge resistor and the opposite cavity wall of the receiving cavity.

[0012] Optionally, the battery power distribution unit further includes:

[0013] The sampling connector and the control connector both include an electrical connection portion that passes through the control circuit board and is electrically connected to the control circuit board.

[0014] Optionally, the control circuit board includes electrical connectors, and the battery power distribution unit further includes:

[0015] An electrical device having an electrical connection terminal, wherein the electrical connection terminal and the electrical connection piece are attached and electrically connected.

[0016] Optionally, the control circuit board includes a circuit board body, and the electrical connection piece includes a first connection portion, a second connection portion, and a buffer connection portion connected in sequence, wherein:

[0017] The first connecting part is electrically connected to the circuit board body, the second connecting part is electrically connected to the electrical connection terminal, the buffer connecting part is connected to the first connecting part at an angle, and the buffer connecting part is connected to the second connecting part at an angle.

[0018] Optionally, the first connecting portion and the second connecting portion are spaced along the Z direction, and the buffer connecting portion is a flat plate structure;

[0019] Alternatively, the buffer connection may be a curved surface structure.

[0020] Optionally, the buffer connection includes at least two connecting plates, which are connected sequentially, and there is an included angle between adjacent connecting plates.

[0021] Optionally, in the extending direction of the first connecting portion and the second connecting portion, the buffer connecting portion connects to the same end of the first connecting portion and the second connecting portion;

[0022] Alternatively, in the extending direction of the first connecting portion and the second connecting portion, the buffer connecting portion connects the first end of the first connecting portion and different ends of the second connecting portion.

[0023] Optionally, the battery power distribution unit further includes:

[0024] A thermal pad is attached to the outer surface of the bottom wall of the bottom shell.

[0025] This application also provides a power battery, including the aforementioned battery power distribution unit.

[0026] The power battery of this application includes the aforementioned battery power distribution unit, and therefore has the same technical effects as the aforementioned battery power distribution unit, which will not be repeated here.

[0027] This application also provides a vehicle including the aforementioned power battery.

[0028] The vehicle described in this application includes the aforementioned power battery, and therefore has the same technical effects as the aforementioned power battery, which will not be repeated here. Attached Figure Description

[0029] Figure 1 A schematic diagram of a specific embodiment of the battery power distribution unit provided in this application;

[0030] Figure 2 for Figure 1 Top view of the battery power distribution unit;

[0031] Figure 3 for Figure 1 A schematic diagram of the control circuit board in the battery power distribution unit;

[0032] Figure 4 for Figure 1 A schematic diagram of the area where the pre-charge relay is located in the battery power distribution unit;

[0033] Figure 5 for Figure 1 A schematic diagram of the structure of the area where the pre-charge resistor is located in the battery power distribution unit;

[0034] Figure 6 for Figure 1 Layout diagram of the battery power distribution unit;

[0035] Figure 7 for Figure 3 Enlarged view of region A in the middle;

[0036] Figure 8 for Figure 7 Simplified structural diagram of the intermediate power connector;

[0037] Figure 9 for Figure 1 A schematic diagram of the electrical connection piece in the second embodiment of the battery power distribution unit;

[0038] Figure 10 for Figure 1 A schematic diagram of the electrical connection piece in the third embodiment of the battery power distribution unit;

[0039] Figure 11 for Figure 1A schematic diagram of the electrical connection piece in the fourth embodiment of the battery power distribution unit;

[0040] in, Figures 1-11 The accompanying figure labels are as follows:

[0041] 1-Bottom shell; 1A-Receiving cavity;

[0042] 2-Control circuit board; 21-Electrical connector; A1-First connector; A2-Second connector; A3-Buffer connector; A31-Connecting plate; 22-Circuit board body; 22a-Allowing hole;

[0043] a-Connecting terminal;

[0044] 3-Cushioning pad;

[0045] 4-Pre-charge relay;

[0046] 5-Pre-charge resistor;

[0047] 6-Sampling connector;

[0048] 7-Control connector;

[0049] 8 - Electrical components; 8a - Electrical connection terminals;

[0050] 9- Thermal pad. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0053] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0054] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] Please refer to Figures 1-6 , Figure 1 A schematic diagram of a specific embodiment of the battery power distribution unit provided in this application; Figure 2 for Figure 1 Top view of the battery power distribution unit; Figure 3 for Figure 1 A schematic diagram of the control circuit board in the battery power distribution unit; Figure 4 for Figure 1 A schematic diagram of the area where the pre-charge relay is located in the battery power distribution unit; Figure 5 for Figure 1 A schematic diagram of the structure of the area where the pre-charge resistor is located in the battery power distribution unit; Figure 6 for Figure 1 Layout diagram of the battery power distribution unit.

[0056] This embodiment provides a battery power distribution unit, including:

[0057] Bottom shell 1, the upper end of bottom shell 1 is an open end, bottom shell 1 includes receiving cavity 1A;

[0058] The control circuit board 2 is connected to the upper end of the bottom shell 1;

[0059] A pre-charge circuit module is located in the receiving cavity 1A. The pre-charge circuit module includes a connection terminal a, which passes through the control circuit board 2 and is electrically connected to the control circuit board 2.

[0060] The buffer pad 3 is sandwiched between the pre-charge circuit module and the relative cavity walls of the receiving cavity 1A.

[0061] In this embodiment of the battery power distribution unit, the connection terminal a of the precharge circuit module passes through the control circuit board 2 and is electrically connected to the control circuit board 2. This through-type connection method can better resist the stress caused by vibration and reduce the possibility of loose connection. At the same time, the buffer pad 3 is sandwiched between the precharge circuit module and the relative cavity wall of the receiving cavity 1A. The setting of the buffer pad 3 can effectively isolate the direct contact between the precharge circuit module and the bottom shell 1, and absorb and disperse the stress generated during vibration through elastic deformation, reduce the impact of vibration on the connection between the precharge circuit module and the control circuit board 2, reduce the fluctuation of electrical performance caused by vibration, and ensure the reliability and electrical performance of the battery power distribution unit.

[0062] The connection method between the control circuit board 2 and the base shell 1 is not limited. For example, the control circuit board 2 and the base shell 1 can be fixed by bolts, clips, adhesive, or hot riveting. Taking the hot riveting of the control circuit board 2 and the base shell 1 as an example, the upper end of the base shell 1 has a hot riveting post, and the control circuit board 2 is provided with a corresponding riveting hole. During assembly, the control circuit board 2 is supported on the upper end of the base shell 1, and the hot riveting post passes through the corresponding riveting hole; the control circuit board 2 and the base shell 1 are positioned to ensure that the circuit board 2 and the base shell 1 will not shift during the hot riveting process; the top of the hot riveting post is heated, and the hot riveting post melts and fills the interior of the riveting hole; after cooling, the material of the hot riveting post solidifies and forms a shape, thereby tightly connecting the control circuit board 2 and the base shell 1.

[0063] In some embodiments of this application, the connection terminal a of the precharge circuit module and the control circuit board 2 are electrically connected by wave soldering. Wave soldering is an efficient soldering method, more suitable for through-type connections. The wave soldering of the connection terminal a and the control circuit board 2 provides strong soldering strength, ensuring a firm and reliable connection between the precharge circuit module and the control circuit board 2.

[0064] Please continue to refer to this. Figures 3-5 The precharge circuit module includes a precharge relay 4 and a precharge resistor 5. Part of the buffer pad 3 is sandwiched between the precharge relay 4 and the relative cavity wall of the receiving cavity 1A, and part of the buffer pad 3 is sandwiched between the precharge resistor 5 and the relative cavity wall of the receiving cavity 1A.

[0065] The precharge relay 4 and the precharge resistor 5 are key electronic components in the precharge circuit. The buffer pad 3 sandwiched between the precharge relay 4 and the relative cavity wall of the receiving cavity 1A can absorb the vibration energy transmitted from the bottom shell 1 to the precharge relay 4, reduce the impact of vibration on the connection between the precharge relay 4 and the control circuit board 2, and improve the electrical connection stability between the precharge relay 4 and the control circuit board 2. The buffer pad 3 sandwiched between the precharge resistor 5 and the relative cavity wall of the receiving cavity 1A can absorb the vibration energy transmitted from the bottom shell 1 to the precharge resistor 5, reduce the impact of vibration on the connection between the precharge resistor 5 and the control circuit board 2, and improve the electrical connection stability between the precharge resistor 5 and the control circuit board 2.

[0066] Preferably, there are two buffer pads 3, one of which is sandwiched between the precharge relay 4 and the opposite cavity wall of the receiving cavity 1A, and the other is sandwiched between the precharge resistor 5 and the opposite cavity wall of the receiving cavity 1A.

[0067] Since the precharge relay 4 and the precharge resistor 5 may have different sizes and shapes, the distances between the precharge relay 4 and the relative cavity wall of the receiving cavity 1A, and between the precharge resistor 5 and the relative cavity wall of the receiving cavity 1A may be different. The buffer pads 3 can be set separately to optimize according to specific needs, provide a more suitable buffering effect, and ensure that the precharge relay 4 and the precharge resistor 5 are subjected to uniform buffering effect during vibration.

[0068] The buffer pad 3 should have appropriate elasticity so that it can effectively absorb and disperse energy when subjected to vibration. The material of the buffer pad 3 includes, but is not limited to, rubber, foam, and plastic.

[0069] The buffer pad 3 can be bonded to one of the opposing cavity walls of the pre-charge resistor 5 and the receiving cavity 1A; or bonded to one of the opposing cavity walls of the pre-charge relay 4 and the receiving cavity 1A, thereby improving the positional stability of the buffer pad 3 and ensuring that the buffer pad 3 can stably perform its buffering function.

[0070] Please continue to refer to this. Figure 3 In some embodiments of this application, the battery power distribution unit further includes:

[0071] Sampling connector 6 and control connector 7, both of which include an electrical connection portion that passes through and is electrically connected to control circuit board 2.

[0072] In related battery power distribution units, sampling connector 6 and control connector 7 are electrically connected to control circuit board 2 via wiring harnesses. The presence of wiring harnesses makes the production of battery power distribution units inconvenient, affects production efficiency, and the stability of the wiring harness connection is poor. In some embodiments of this application, both sampling connector 6 and control connector 7 include electrical connection parts that pass through and are electrically connected to control circuit board 2. In other words, sampling connector 6 and control connector 7 are directly integrated into control circuit board 2, eliminating the need for wiring harnesses, improving the production convenience and efficiency of battery power distribution units; the direct passage of the electrical connection parts through control circuit board 2 also helps improve the stability of the electrical connection.

[0073] In some embodiments, the electrical connection and the control circuit board 2 are electrically connected by wave soldering. Wave soldering is an efficient soldering method that is more suitable for through-type connections. Wave soldering the electrical connection and the control circuit board 2 provides strong soldering strength, ensuring a firm and reliable connection between the sampling connector 6 and the control circuit board 2, and between the control connector 7 and the control circuit board 2.

[0074] Please continue to refer to this. Figure 3 and Figure 6 In some embodiments of this application, the control circuit board 2 includes an electrical connection piece 21, and the battery power distribution unit further includes:

[0075] Electrical component 8 has an electrical connection terminal 8a, and the electrical connection terminal 8a and the electrical connection piece 21 are attached and electrically connected.

[0076] As shown above, the electrical connection terminal 8a and the electrical connection piece 21 are attached and electrically connected, which helps to improve the integration of the battery power distribution unit and reduce the overall size of the battery power distribution unit. The direct attachment of the electrical connection terminal 8a and the electrical connection piece 21 can also reduce contact resistance and the risk of loosening, improve the reliability of the electrical connection, and shorten the conductive path.

[0077] In some embodiments of this application, the electrical connection terminal 8a and the electrical connection piece 21 are fixed by laser welding.

[0078] Laser welding is more suitable for welding and fixing high-precision structures. Using the above laser welding process can significantly improve the connection reliability of electrical connection terminal 8a and electrical connection piece 21.

[0079] In some embodiments of this application, the electrical connection piece 21 is a nickel sheet.

[0080] As set above, the electrical connector 21 is a nickel sheet. First, the nickel sheet has good conductivity, and the contact resistance after welding with the terminal is stable at an extremely low level, which helps to reduce energy loss. Second, the nickel sheet is more suitable for laser welding process. During welding, the nickel sheet can melt quickly and combine evenly with the electrical connector 8a, improving the connection reliability. Third, the nickel sheet has good structural rigidity, which can avoid deformation or breakage caused by vibration as much as possible. Finally, the nickel sheet can be directly stamped and formed, resulting in high processing efficiency.

[0081] Of course, the electrical connector 21 is not limited to the form of the nickel sheet described above. In other embodiments of this application, the electrical connector 21 can also be a copper sheet, an iron sheet, etc. When the electrical connector 21 is a copper sheet, the copper sheet has ultra-high conductivity, which can significantly reduce the contact resistance of the connection point and reduce energy loss in current transmission; the high conductivity of the copper sheet can also ensure that the current is evenly distributed on the electrical connector 21, avoid local overheating, and improve current stability; when the electrical connector 21 is an iron sheet, the structural strength of the electrical connector 21 can be significantly improved, and the manufacturing cost of the electrical connector 21 can be significantly reduced.

[0082] Please refer to Figure 7 and Figure 8 , Figure 7 for Figure 3 Enlarged view of region A in the middle; Figure 8 for Figure 7 A simplified structural diagram of the electrical connector.

[0083] In some embodiments of this application, the control circuit board 2 includes a circuit board body 22, and the electrical connection piece 21 includes a first connection portion A1, a second connection portion A2, and a buffer connection portion A3 connected in sequence, wherein:

[0084] The first connecting part A1 is electrically connected to the circuit board body 22, the second connecting part A2 is electrically connected to the electrical connecting terminal 8a, the buffer connecting part A3 is connected to the first connecting part A1 at an angle, and the buffer connecting part A3 and the second connecting part A2 are connected at an angle.

[0085] The hard connection between the electrical connector 21 and the electrical connector 8a may lead to stress or displacement caused by tolerance accumulation, affecting the electrical connection stability between the electrical component 8 and the control circuit board 2. To avoid the above problems, stress absorption is crucial. Some embodiments of this application use the electrical connector 21 to absorb displacement caused by tolerance and durability. Specifically, the buffer connection A3 is connected between the first connection A1 and the second connection A2. The buffer connection A3 and the first connection A1 are connected at an angle, and the buffer connection A3 and the second connection A2 are connected at an angle. The presence of the buffer connection A3 can form a certain elastic buffer zone between the electrical connector 21, the electrical connector 8a and the circuit board body 22, thereby reducing the stress and displacement caused by tolerance accumulation, and absorbing and dispersing the mechanical stress caused by factors such as vibration, thereby improving the electrical connection stability between the electrical component 8 and the control circuit board 2.

[0086] Depend on Figure 7 and Figure 8 As can be seen, in some embodiments, the first connecting part A1 and the second connecting part A2 have a gap along the Z direction, and the buffer connecting part A3 is a flat plate structure.

[0087] When the battery power distribution unit is installed on the vehicle body, the height direction of the vehicle body is Z-direction, and the extension direction of the electrical connection piece 21 is X-direction, which is also the front-rear direction of the vehicle body.

[0088] As set above, the distance between the first connecting part A1 and the second connecting part A2 can provide a certain space, so that the buffer connecting part A3 has a certain degree of freedom of movement in the Z and X directions. When subjected to external force, the buffer connecting part A3 of the flat plate structure can undergo elastic deformation, thereby absorbing and dispersing stress, reducing the direct impact on the first connecting part A1 and the second connecting part A2, and maintaining the stability of the electrical connection between the electrical component 8 and the control circuit board 2.

[0089] Figure 7 and Figure 8 The electrical connector 21 shown has a Z-shaped structure. The angle between the buffer connector A3 and the first connector A1 is an obtuse angle, and the angle between the buffer connector A3 and the second connector A2 is also an obtuse angle. The obtuse angle design is more conducive to reducing stress concentration, thereby improving the durability of the electrical connector 21. The angle between the buffer connector A3 and the first connector A1, and the angle between the buffer connector A3 and the second connector A2 can be 120°, 135°, etc.

[0090] In some other embodiments of this application, the included angle between the buffer connecting part A3 and the first connecting part A1, and the included angle between the buffer connecting part A3 and the second connecting part A2 can be acute angles, such as 30°, 45°, etc.; or, the included angle between the buffer connecting part A3 and the first connecting part A1, and the included angle between the buffer connecting part A3 and the second connecting part A2 can be right angles.

[0091] To avoid stress concentration, the buffer connection A3 and the first connection A1 are connected with rounded corners, and the buffer connection A3 and the second connection A2 are connected with rounded corners.

[0092] Depend on Figure 7 and Figure 8 It can be seen that, in the extending direction of the first connecting part A1 and the second connecting part A2, the buffer connecting part A3 connects the different ends of the first connecting part A1 and the second connecting part A2.

[0093] Please refer to Figure 9 , Figure 9 for Figure 1 A schematic diagram of the electrical connection piece in the second embodiment of the battery power distribution unit.

[0094] In this embodiment, in the extending direction of the first connecting part A1 and the second connecting part A2, the buffer connecting part A3 connects the same end of the first connecting part A1 and the second connecting part A2.

[0095] Thus, the electrical connector 21 forms a right-angled U-shaped structure, with the first connector A1 located at one end of the right-angled U-shaped structure, the second connector A2 located at the other end of the right-angled U-shaped structure, and the buffer connector A3 located in the middle part of the right-angled U-shaped structure, which plays the role of elastic buffering.

[0096] Please refer to Figure 10 , Figure 10 for Figure 1 A schematic diagram of the electrical connection piece in the third embodiment of the battery power distribution unit.

[0097] In some other embodiments of this application, the buffer connection A3 is a curved surface structure.

[0098] As set up above, the electrical connector 21 forms a U-shaped structure, and the curved buffer connector A3 is more likely to undergo elastic deformation when subjected to external force, thereby absorbing vibration energy; the curved design can also reduce local stress concentration and reduce the risk of breakage.

[0099] In some other embodiments of this application, the buffer connection portion A3 includes at least two connecting plate portions A31, which are connected sequentially and have an included angle between adjacent connecting plate portions A31.

[0100] As set above, the buffer connection part A3 includes multiple connection plates A31. The multiple connection plates A31 are connected in sequence to achieve a multi-level buffering effect, which can more effectively absorb and disperse stress caused by tolerance accumulation, vibration, etc., and maintain the stability of the electrical connection between the electrical component 8 and the control circuit board 2.

[0101] like Figure 11As shown, in this embodiment, the buffer connection part A3 includes three connecting plate parts A31, which are connected sequentially, and the electrical connection piece 21 forms an S-shaped structure.

[0102] There is an included angle between two adjacent connecting plate parts A31. The specific value of the included angle is not limited. For example, the included angle between two adjacent connecting plate parts A31 can be an acute angle, such as 30°, 45°, etc.; or, the included angle between two adjacent connecting plate parts A31 can be an obtuse angle, such as 120°, 135°, etc.; or, the included angle between two adjacent connecting plate parts A31 can be a right angle.

[0103] Please continue to refer to this. Figure 6 In some embodiments of this application, the battery power distribution unit further includes:

[0104] Thermal pad 9 is attached to the outer surface of the bottom wall of the bottom shell 1.

[0105] As set up above, the thermal pad 9 is connected to the outer surface of the bottom wall of the bottom shell 1. The thermal pad 9 can conduct the heat generated by the electrical components 8 and transfer it to the bottom shell 1, and then dissipate it to the external environment through the bottom shell 1, thereby improving the heat dissipation efficiency of the battery power distribution unit.

[0106] The thermal pad 9 can be installed on the outer surface of the bottom wall of the shell 1 by means of adhesive bonding or other methods.

[0107] The material of the thermal pad 9 needs to have good thermal conductivity, including but not limited to silicone, thermal grease, etc.

[0108] Please continue to refer to this. Figure 7 In some embodiments of this application, the circuit board body 22 is provided with a clearance hole 22a at the corresponding position of the first connection part A1, which facilitates the soldering of the first connection part A1 and the electrical connection terminal 8a through the clearance hole 22a, thereby improving the soldering convenience.

[0109] This embodiment also provides a power battery, including the aforementioned battery power distribution unit.

[0110] The power battery in this embodiment includes the aforementioned battery power distribution unit, and therefore has the same technical effects as the aforementioned battery power distribution unit, which will not be repeated here.

[0111] This embodiment also provides a vehicle including the aforementioned power battery.

[0112] The vehicle in this embodiment includes the aforementioned power battery, and therefore has the same technical effects as the aforementioned power battery, which will not be repeated here.

[0113] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A battery power distribution unit, characterized by, include: Bottom shell (1), the upper end of the bottom shell (1) is an open end, the bottom shell (1) includes a receiving cavity (1A). The control circuit board (2) is connected to the upper end of the bottom shell (1); A precharge circuit module is located in the receiving cavity (1A). The precharge circuit module includes a connection terminal (a), which passes through the control circuit board (2) and is electrically connected to the control circuit board (2). A buffer pad (3) is sandwiched between the opposing cavity walls of the precharge circuit module and the receiving cavity (1A).

2. The battery power distribution unit of claim 1, wherein, The precharge circuit module includes a precharge relay (4) and a precharge resistor (5). Part of the buffer pad (3) is sandwiched between the precharge relay (4) and the relative cavity wall of the receiving cavity (1A), and part of the buffer pad (3) is sandwiched between the precharge resistor (5) and the relative cavity wall of the receiving cavity (1A).

3. The battery power distribution unit of claim 2, wherein, The number of buffer pads (3) is two, one of which is sandwiched between the precharge relay (4) and the opposite cavity wall of the receiving cavity (1A), and the other is sandwiched between the precharge resistor (5) and the opposite cavity wall of the receiving cavity (1A).

4. The battery power distribution unit of any of claims 1-3, wherein, The battery power distribution unit also includes: The sampling connector (6) and the control connector (7) both include an electrical connection portion that passes through the control circuit board (2) and is electrically connected to the control circuit board (2).

5. The battery power distribution unit of any of claims 1-3, wherein, The control circuit board (2) includes an electrical connection piece (21), and the battery power distribution unit further includes: An electrical component (8) has an electrical connection terminal (8a) and the electrical connection piece (21) are attached and electrically connected.

6. The battery power distribution unit of claim 5, wherein, The control circuit board (2) includes a circuit board body (22), and the electrical connection piece (21) includes a first connection part (A1), a second connection part (A2), and a buffer connection part (A3) connected in sequence, wherein: The first connecting part (A1) is electrically connected to the electrical connecting terminal (8a), the second connecting part (A2) is electrically connected to the circuit board body (22), the buffer connecting part (A3) is connected to the first connecting part (A1) at an angle, and the buffer connecting part (A3) is connected to the second connecting part (A2) at an angle.

7. The battery power distribution unit according to claim 6, characterized in that, The first connecting part (A1) and the second connecting part (A2) are spaced along the Z direction, and the buffer connecting part (A3) is a flat plate structure; Alternatively, the buffer connection (A3) may be a curved surface structure.

8. The battery power distribution unit according to claim 6, characterized in that, The buffer connection part (A3) includes at least two connecting plate parts (A31), each of the connecting plate parts (A31) is connected sequentially, and there is an included angle between two adjacent connecting plate parts (A31).

9. The battery power distribution unit according to claim 6, characterized in that, In the extending direction of the first connecting part (A1) and the second connecting part (A2), the buffer connecting part (A3) connects the same end of the first connecting part (A1) and the second connecting part (A2); Alternatively, in the extending direction of the first connecting part (A1) and the second connecting part (A2), the buffer connecting part (A3) connects different ends of the first connecting part (A1) and the second connecting part (A2).

10. The battery power distribution unit according to claim 4, characterized in that, The battery power distribution unit also includes: A thermal pad (9) is attached to the outer surface of the bottom wall of the bottom shell (1).

11. The battery power distribution unit according to claim 5, characterized in that, The battery power distribution unit also includes: A thermal pad (9) is attached to the outer surface of the bottom wall of the bottom shell (1).

12. The battery power distribution unit according to any one of claims 1-3 and 6-9, characterized in that, The battery power distribution unit also includes: A thermal pad (9) is attached to the outer surface of the bottom wall of the bottom shell (1).

13. A power battery, characterized in that, Includes the battery power distribution unit as described in any one of claims 1-12.

14. A vehicle, characterized in that, Includes the power battery as described in claim 13.

Images