Battery pack upper cover and battery pack

Abstract

The utility model provides a battery pack upper cover and a battery pack, and the battery pack upper cover comprises a cover body; the component base is arranged on the cover body, the component base is used for being matched with a corresponding component plug in an inserted mode so as to achieve conduction of components inside the battery pack and external components, and the component base and the cover body are of an integrally-formed structure. Compared with the prior art, the battery pack upper cover, the cover body and the component base adopt an integrally formed structure, that is, the cover body and the component base form a whole, and compared with the prior art, the component base does not need to be fixed on an electrical panel through a bolt firstly, and then the electrical panel is fixed on the cover body through a bolt, so that a plurality of mounting procedures are saved, and the mounting efficiency is improved. And the installation efficiency is improved. Besides, the cover body and the component base are integrated, and no gap exists between the cover body and the component base, so that compared with the battery pack upper cover in the prior art, the battery pack upper cover is better in air tightness, and the air tightness reject ratio is reduced.

Description

Technical Field

[0001] The utility model relates to the field of energy storage technology, and in particular to a battery pack upper cover and a battery pack. Background Art

[0002] Currently, the battery pack cover consists of a cover, an electrical panel, and a slave control panel. The electrical panel houses the positive and negative connector bases, the manual maintenance switch, and the communication interface, while the slave control panel houses the BMU (battery management unit), wiring harness, and explosion-proof valve.

[0003] In existing technology, the electrical panel and slave control panel are typically punched out of sheet metal. The bases of the positive and negative connectors, the manual maintenance switch, and the communication interface are bolted to the electrical panel. The electrical panel is then secured to the cover with bolts and gaskets to achieve airtightness and IP67 protection. The slave control panel is also secured to the cover with bolts and gaskets.

[0004] It can be seen that the installation steps of some battery pack covers are complicated, and gaskets are used to seal the electrical panel and cover, the base of the positive and negative connectors and the electrical panel, and the communication interface and the electrical panel. Due to the large number of sealing locations, the risk of air leakage is also increased accordingly. Utility Model Content

[0005] The present invention aims to at least solve the problem in the prior art that the installation steps of the battery pack cover are complicated and the risk of air leakage increases due to the large number of sealing positions, and proposes a battery pack cover and a battery pack.

[0006] In order to achieve the purpose of the present invention, a battery pack cover is provided, including: a cover body; a component base, which is arranged on the cover body, and the component base is used to be plugged into and matched with a corresponding component plug to achieve conduction between the components inside the battery pack and the external components. The component base and the cover body are an integrally formed structure.

[0007] Optionally, the component base and the cover are integrally formed by injection molding.

[0008] Optionally, the component base includes: a connector base, which is integrally formed with the cover body, and the connector base is used to be plugged into and cooperate with a connector plug to achieve conduction between the battery module inside the battery pack and the external circuit.

[0009] Optionally, the connector base includes: a first base shell, which is passed through the side wall plate of the cover body and is integrally formed with the side wall plate, and the first base shell is used to be plugged into and matched with the connector plug; a first conductive member, which is embedded in the first base shell; the first end of the first conductive member is located outside the cover body, and is used to be electrically connected to the positive or negative pole of the external circuit; the second end of the first conductive member is located inside the cover body, and is used to be electrically connected to the total positive or negative pole of the battery module.

[0010] Optionally, the component base includes: a communication interface base, which is integrally formed with the cover body, and the communication interface base is used to be plugged into and cooperate with a communication connector to achieve a communication connection between the inside of the battery pack and the outside of the battery pack.

[0011] Optionally, the communication interface base includes: a second base shell, which is passed through the side wall plate of the cover body and is integrally formed with the side wall plate, and the second base shell is used to plug and cooperate with the communication connector; a second conductive member, which is embedded in the second base shell; the first end of the second conductive member is located outside the cover body, and is used to be electrically connected to the communication connector; the second end of the second conductive member is located inside the cover body, and is used to be electrically connected to the FPC acquisition board.

[0012] Optionally, the component base further includes: a manual maintenance switch base, which is integrally formed with the cover body, and the manual maintenance switch base is used to be plugged into and cooperate with the manual maintenance switch plug.

[0013] Optionally, the battery pack cover further includes: a mounting plate for mounting a battery management unit, a mounting opening is provided on the cover body, the mounting plate is arranged at the position of the mounting opening, and the mounting plate is integrally formed with the cover body.

[0014] Optionally, the mounting plate includes: a main body, provided with a connecting hole for connecting to the battery management unit; a connecting plate, connected to the outer periphery of the main body, the main body is connected to the inner peripheral wall of the mounting opening through the connecting plate, the cover body, the connecting plate and the main body form a mounting groove for accommodating the battery management unit, and the groove of the mounting groove is located on the inner side of the cover body.

[0015] According to a second aspect of the present invention, a battery pack is also disclosed, comprising the above-mentioned battery pack upper cover.

[0016] The battery pack cover of this utility model utilizes an integrated structure between the cover and the component base. That is, the cover and component base form a single unit. Compared to existing technologies, the component base does not need to be bolted to the electrical panel first, and then the electrical panel is bolted to the cover, eliminating multiple installation steps and improving installation efficiency. Furthermore, since the cover and component base are integral, with no gap between them, the battery pack cover exhibits improved airtightness compared to existing battery pack covers, reducing the rate of airtightness failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the battery pack cover of an embodiment of the utility model

[0018] Figure 2 A side view of the battery pack cover according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the battery pack cover taken along the AA line according to an embodiment of the present invention;

[0020] Figure 4 for Figure 3 A partial enlarged view of part A;

[0021] Figure 5 This is a schematic diagram of the internal structure of the upper cover of the battery pack according to an embodiment of the present utility model;

[0022] Figure 6 for Figure 5 A partial enlarged view of part B;

[0023] Figure 7 This is a schematic diagram of the manual maintenance switch base and the manual maintenance switch plug of the battery pack cover according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

[0025] List of reference numerals:

[0026] 10. Cover body; 11. Top plate; 12. Side wall plate; 121. Mounting port; 20. Component base; 21. Connector base; 211. First base shell; 212. First conductive member; 21a. Positive connector base; 21b. Negative connector base; 22. Communication interface base; 221. Second base shell; 222. Second conductive member; 23. Manual maintenance switch base; 231. Third base shell; 232. Third conductive member; 30. Mounting plate; 31. Main body; 32. Connecting plate; 40. Battery management unit; 50. Manual maintenance switch plug; 51. Fuse; 60. Tray; 70. Battery module. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the battery pack cover and the battery pack provided by the present invention are described in detail below with reference to the accompanying drawings.

[0028] Currently, the battery pack cover consists of a cover, an electrical panel, and a slave control panel. The electrical panel houses the positive and negative connector bases, the manual service disconnect (MSD), and the communication interface, while the slave control panel houses the battery management unit (BMU), wiring harness, and explosion-proof valve.

[0029] In existing technology, the electrical panel and slave control panel are typically punched out of sheet metal. The bases of the positive and negative connectors, the manual maintenance switch, and the communication interface are bolted to the electrical panel. The electrical panel is then secured to the cover with bolts and gaskets to achieve airtightness and IP67 protection. The slave control panel is also secured to the cover with bolts and gaskets.

[0030] It can be seen that the installation steps of some battery pack covers are complicated, and gaskets are used to seal the electrical panel and cover, the base of the positive and negative connectors and the electrical panel, and the communication interface and the electrical panel. Due to the large number of sealing locations, the risk of air leakage is also increased accordingly.

[0031] The main function of an MSD is to quickly disconnect high-voltage circuits to protect technicians repairing electric vehicles in high-voltage environments or to respond to unexpected events, allowing for safer repairs. For example, it can protect against external short circuits, requiring high-voltage disconnection for repairs. Existing manual maintenance switches suffer from a lack of temperature detection, resulting in untimely fault detection and poor safety performance.

[0032] In order to solve the above problems, the present invention discloses a battery pack cover, comprising: a cover body 10 and a component base 20. Figure 1 As shown, the component base 20 is provided on the cover 10 , and the component base 20 is used to be plugged into and matched with the corresponding component plug to achieve conduction between the components inside the battery pack and the external components. The component base 20 and the cover 10 are an integrally formed structure.

[0033] The battery pack cover of this utility model utilizes an integrated structure between the cover 10 and the component base 20. That is, the cover 10 and the component base 20 form a single unit. Compared to the prior art, the component base 20 does not need to be bolted to the electrical panel first, and then the electrical panel is bolted to the cover 10. This saves multiple installation steps and improves installation efficiency. Furthermore, because the cover 10 and the component base 20 are integrally formed, there is no gap between them. Therefore, compared to prior art battery pack covers, the airtightness is improved, reducing the rate of airtightness failure.

[0034] It should be noted that in this embodiment, the component base 20 and the cover 10 are integrally formed using injection molding. That is, in this embodiment, the cover 10 and the component base 20 are formed into a single unit through injection molding. Therefore, there is no connection gap between the cover 10 and the component base 20, which improves airtightness. Furthermore, the injection molding process is also compatible with different design specifications and complex structures, thereby improving the adaptability of the upper cover.

[0035] It can be understood that, in this embodiment, Figure 1 and Figure 2 As shown, the cover 10 includes a top plate 11 and side plates 12. There are four side plates 12, which are connected to the four sides of the top plate 11 respectively. The top plate 11 and the four side plates 12 form the cover 10. The component base 20 is located on one of the side plates 12.

[0036] In this embodiment, the component base 20 includes a connector base 21, a communication interface base 22, and a manual maintenance switch base 23. The specific structures of the connector base 21, the communication interface base 22, and the manual maintenance switch base 23 are further described below with reference to the accompanying drawings.

[0037] like Figure 2 and Figure 3 As shown, the connector base 21 is integrally formed with the side wall 12 of the cover 10. The connector base 21 is used to mate with the connector plug to achieve electrical connection between the battery module 70 inside the battery pack and the external circuit. By integrally forming the connector base 21 with the cover 10, while achieving electrical connection between the battery module 70 and the external circuit, it eliminates the steps of first assembling the connector base 21 to the electrical panel and then installing the electrical panel to the cover 10, thereby improving installation efficiency. In addition, because the cover 10 and the connector base 21 are integrally formed, there is no gap between them. Therefore, compared with existing battery pack covers, the airtightness is better, reducing the airtightness failure rate.

[0038] like Figure 4As shown, the connector base 21 includes: a first base shell 211 and a first conductive member 212. The first base shell 211 is provided on the side wall plate 12 of the cover body 10 and is integrally formed with the side wall plate 12 of the cover body 10. The first base shell 211 is used to plug and mate with the connector plug.

[0039] like Figures 4 to 6 As shown, the first conductive member 212 is embedded in the first base shell 211; the first end of the first conductive member 212 is located outside the cover 10 and is used to electrically connect to the positive or negative pole of the external circuit; the second end of the first conductive member 212 is located inside the cover 10 and is used to electrically connect to the total positive or negative pole of the battery module 70. In this embodiment, Figure 4 As shown, the first conductive member 212 is made of metal, with its first end forming a wire core for electrical connection to the wire core in the connector plug, and then electrically connected to the positive or negative pole of the external circuit through the wire core of the connector plug. The second end of the first conductive member 212 is a copper busbar for electrical connection to the common positive or common negative pole of the battery module 70.

[0040] like Figure 1 As shown, in this embodiment, there are two connector bases 21, namely a positive connector base 21a and a negative connector base 21b. The positive connector base 21a is electrically connected to the total positive pole of the battery module 70, and the negative connector base 21b is connected to the total negative pole of the battery module 70. During use, the positive connector base 21a is electrically connected to the positive pole of the external circuit via the positive connector plug, and the negative connector base 21b is electrically connected to the negative pole of the external circuit via the negative connector plug, thereby enabling the battery pack to supply energy to the external circuit or for the external circuit to store energy in the battery pack.

[0041] like Figure 1 and Figure 6 As shown, the communication interface base 22 is integrally formed with the side wall 12 of the cover 10. The communication interface base 22 is used to plug and cooperate with the communication connector to achieve communication connection between the inside and outside of the battery pack. By integrally forming the communication interface base 22 with the side wall 12 of the cover 10, while achieving signal transmission between the inside and outside of the battery pack, the steps of first assembling the communication interface base 22 to the electrical panel and then installing the electrical panel to the cover 10 are eliminated, thereby improving installation efficiency. In addition, since the cover 10 and the communication interface base 22 are an integral whole, there is no gap between the two. Therefore, compared with the existing battery pack cover in the prior art, the airtightness is better, and the airtightness failure rate is reduced.

[0042] like Figure 1 and Figure 6As shown, the communication interface base 22 includes: a second base shell 221 and a second conductive member 222. The second base shell 221 is provided on the side wall plate 12 of the cover body 10 and is integrally formed with the side wall plate 12 of the cover body 10. The second base shell 221 is used to plug and cooperate with the communication connector.

[0043] The second conductive member 222 is embedded in the second base housing 221; the first end of the second conductive member 222 is located outside the cover 10 and is used to electrically connect to the communication connector; the second end of the second conductive member 222 is located inside the cover 10 and is used to electrically connect to the FPC acquisition board. In this embodiment, the second conductive member 222 is a PIN pin, the first end of the PIN pin is located outside the cover 10 and is used to communicate with the communication connector, and the second end of the PIN pin is electrically connected to the FPC acquisition board through a wiring harness. The FPC acquisition board is used to collect information such as battery cell voltage and temperature. When the communication connector is plugged into the communication interface base 22, the battery cell voltage, temperature and other information collected by the FPC acquisition board is transmitted to the communication connector through the PIN pin, and finally transmitted to the control device through the cable connected to the communication connector, so that the control device can obtain information such as battery cell voltage and temperature.

[0044] like Figure 1 、 Figure 6 and Figure 7 As shown, the manual maintenance switch base 23 is integrally formed with the cover 10 and is designed to plug and mate with the manual maintenance switch plug 50. The manual maintenance switch base 23 includes a third base housing 231 and a third conductive member 232. The third base housing 231 is integrally formed with and extends through the side wall 12 of the cover 10. The second base housing 221 is designed to removably plug and mate with the manual maintenance switch plug 50.

[0045] The third conductive member 232 is embedded within the third base housing 231. A first end of the third conductive member 232 is located outside the cover 10 and electrically connects to the fuse 51 in the manual maintenance switch plug 50. A second end of the third conductive member 232 is located inside the cover 10 and electrically connects to the second conductive member 222 in the negative connector base 21b. Because the fuse 51 is located within the manual maintenance switch plug 50 and the manual maintenance switch base 23 is removably connected to the manual maintenance switch plug 50, if the fuse 51 blows and needs to be replaced, the manual maintenance switch plug 50 can be unplugged and the fuse 51 removed, making replacement easier.

[0046] like Figure 1 and Figure 5As shown, the battery pack cover also includes: a mounting plate 30. The mounting plate 30 is used to install the battery management unit 40. A mounting port 121 is provided on the cover 10. The mounting plate 30 is provided at the position of the mounting port 121, and the mounting plate 30 is formed integrally with the cover 10. The mounting port 121 is provided on the side wall plate 12 of the cover 10. The mounting plate 30 is located at the position of the mounting port 121. The mounting plate 30 and the cover 10 are formed integrally. Therefore, the step of mounting the mounting plate 30 to the cover 10 by bolts is omitted, thereby improving the installation efficiency. In addition, since the cover 10 and the mounting plate 30 form a whole, there is no gap between the two. Therefore, compared with the existing technology, the battery pack cover has better airtightness and reduces the airtightness defect rate.

[0047] It should be noted that, in this embodiment, the cover 10 and the mounting plate 30 are integrally formed by injection molding. That is, in this embodiment, the cover 10 and the mounting plate 30 are formed into a single body by injection molding. Therefore, there is no connecting gap between the cover 10 and the mounting plate 30, and the airtightness is better.

[0048] like Figure 1 As shown, in this embodiment, the mounting plate 30 includes a main body 31 and a connecting plate 32. The main body 31 is provided with a connection hole for connecting to the battery management unit 40; the connecting plate 32 is connected to the outer periphery of the main body 31. The main body 31 is connected to the inner peripheral wall of the mounting opening 121 through the connecting plate 32. The cover 10, the connecting plate 32, and the main body 31 form a mounting groove for accommodating the battery management unit 40. The groove is located on the inner side of the cover 10.

[0049] Combine Figure 1 and Figure 5 It can be seen that in this embodiment, the main body 31 is a rectangular plate, and the main body 31 and the side wall plate 12 connected to the main body 31 are spaced apart, and the main body 31 is located on the side facing outward from the side wall plate 12, and the four connecting plates 32 form a frame structure and are connected between the main body 31 and the side wall plate 12, so that the side wall plate 12, the four connecting plates 32 and the main body form a mounting groove protruding from the inside of the cover body 10 to the outside of the cover body 10.

[0050] It is understood that nuts are embedded in the four corners of the mounting slot. After the battery management unit 40 is placed in the mounting slot, the mounting holes on the battery management unit 40 correspond to the four nuts, so that the battery management unit 40 can be fixed in the mounting slot by bolts. By integrally forming the mounting plate 30 and the side wall plate 12, it is equivalent to forming a mounting slot protruding outward inside the cover body 10. After the battery management unit 40 is placed in the mounting slot, the battery management unit 40 can be completely inserted into the mounting slot. Compared with the battery management unit 40 assembly method in the prior art, the battery management unit 40 is equivalent to moving a distance away from the battery module 70. Therefore, the distance between the battery management unit 40 and the battery module 70 is increased. Therefore, the battery management unit 40 will not interfere with the battery module 70. After the internal connecting wires and communication lines are connected, the cover body 10 can be directly placed on the battery module 70, making the assembly process easier.

[0051] like Figure 8 As shown, according to the second aspect of the present invention, a battery pack is also disclosed, comprising the above-mentioned battery pack cover, a battery module 70, and a tray 60. The battery module 70 is fixedly connected to the tray 60, and the battery pack cover is arranged on the tray 60 to form an installation space with the tray 60. The battery module 70 is located in the installation space.

[0052] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A battery pack cover, characterized in that: include: Cover (10); A component base (20) is provided on the cover (10), and the component base (20) is used to be plugged and matched with a corresponding component plug to achieve conduction between components inside the battery pack and external components. The component base (20) and the cover (10) are an integrally formed structure.

2. The battery pack cover according to claim 1, characterized in that: The component base (20) and the cover body (10) are integrally formed by injection molding.

3. The battery pack cover according to claim 1, characterized in that: The component base (20) comprises: The connector base (21) is integrally formed with the cover body (10), and the connector base (21) is used to be plugged into and matched with the connector plug to achieve conduction between the battery module (70) inside the battery pack and the external circuit.

4. The battery pack cover according to claim 3, characterized in that: The connector base (21) comprises: A first base shell (211) is provided on the side wall plate (12) of the cover body (10) and is formed integrally with the side wall plate (12), and the first base shell (211) is used for plugging and mating with the connector plug; A first conductive member (212) is embedded in the first base shell (211); a first end of the first conductive member (212) is located outside the cover body (10) and is used for electrically connecting to the positive electrode or negative electrode of the external circuit; a second end of the first conductive member (212) is located inside the cover body (10) and is used for electrically connecting to the total positive electrode or total negative electrode of the battery module (70).

5. The battery pack cover according to claim 1, characterized in that: The component base (20) comprises: The communication interface base (22) is integrally formed with the cover body (10), and the communication interface base (22) is used for plugging and cooperating with the communication connector to achieve a communication connection between the inside of the battery pack and the outside of the battery pack.

6. The battery pack cover according to claim 5, characterized in that: The communication interface base (22) comprises: A second base shell (221) is provided on the side wall plate (12) of the cover body (10) and is integrally formed with the side wall plate (12), and the second base shell (221) is used for plugging and matching with the communication connector; A second conductive member (222) is embedded in the second base shell (221); a first end of the second conductive member (222) is located outside the cover body (10) and is used for electrically connecting to the communication connector; a second end of the second conductive member (222) is located inside the cover body (10) and is used for electrically connecting to the FPC acquisition board.

7. The battery pack cover according to claim 1, characterized in that: The component base (20) further includes: The manual maintenance switch base (23) is integrally formed with the cover body (10), and the manual maintenance switch base (23) is used for plugging and cooperating with the manual maintenance switch plug.

8. The battery pack cover according to claim 1, characterized in that: The battery pack cover further includes: The mounting plate (30) is used for mounting a battery management unit (40); a mounting opening (121) is provided on the cover (10); the mounting plate (30) is arranged at the position of the mounting opening (121); and the mounting plate (30) and the cover (10) are integrally formed.

9. The battery pack cover according to claim 8, characterized in that: The mounting plate (30) comprises: A main body (31) configured to be connected to the battery management unit (40); A connecting plate (32) is connected to the outer periphery of the main body (31); the main body (31) is connected to the inner peripheral wall of the mounting opening (121) via the connecting plate (32); the cover (10), the connecting plate (32) and the main body (31) form a mounting groove for accommodating the battery management unit (40); the notch of the mounting groove is located on the inner side of the cover (10).

10. A battery pack, characterized in that: A battery pack cover comprising the battery pack cover according to any one of claims 1 to 9.

Images