Battery pack connector and battery pack

Abstract

The utility model discloses a battery pack connector assembly (10) and a battery pack (20). The battery pack connector assembly (10) comprises at least one built-in connector assembly (11); the built-in connector (11) comprises a first end (111) and a second end (112); wherein the first end (111) is used for connecting a battery cell module, and a partition piece (113) is arranged between the first end (111) and the second end (112) of the built-in connector (11); in the extending direction from the first end (111) to the second end (112), the partition piece (113) has a larger cross section than the second end (112). The battery pack connector assembly (10) can directly realize electrical connection with the battery cell module in the battery pack (20) through the first end (111) of the built-in connector assembly (11), thereby shortening the wiring harness requirement when the battery pack connector assembly (10) is connected with the battery cell module, and reducing the design and manufacturing cost of the battery pack (20).

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a battery pack connector and a battery pack. Background Art

[0002] In the prior art, the power battery usually installs the connector on the battery on the cover of the battery box first, and then realizes the electrical connection between the connector and the battery pack inside the battery. Especially for small power battery packs, the installation space of the internal battery pack is more compact.

[0003] However, since the battery box cover and box body need to be separated in certain scenarios, the connection harness between the connector and the battery pack inside the battery needs to be kept longer, and the longer connection harness increases the design and manufacturing cost of the power battery.

[0004] Therefore, the high design and manufacturing costs of power batteries have become an urgent problem that needs to be solved. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a battery pack connector 10 and a battery pack 20, wherein the battery pack connector 10 can directly achieve electrical connection with the battery cell module in the battery pack 20 through the first end 111 of the built-in connector 11, thereby shortening the wiring harness requirements when the battery pack connector 10 is connected to the battery cell module, and reducing the design and manufacturing costs of the battery pack 20.

[0006] The battery pack connector 10 is as follows:

[0007] According to a first aspect of the present application, a battery pack connector 10 is provided, comprising: at least one built-in connector 11; the built-in connector 11 comprises a first end 111 and a second end 112; wherein the first end 111 is used to connect a battery cell module, and a barrier 113 is provided between the first end 111 and the second end 112 of the built-in connector 11; in the extension direction from the first end 111 to the second end 112, the barrier 113 has a larger cross-section than the second end 112.

[0008] In addition, the battery pack connector 10 of the present application may also have the following additional technical features:

[0009] In combination with the first aspect, in a possible implementation manner, the barrier 113 and the first end 111 are an integrally formed structure; and the second end 112 is detachably connected to the integrally formed structure.

[0010] In combination with the first aspect, in a possible implementation, the battery pack connector 10 further includes a guide assembly 12 ; one end of the guide assembly 12 is detachably connected to the second end 112 .

[0011] In combination with the first aspect, in a possible implementation manner, a fastener 114 is provided on a side of the barrier 113 close to the second end 112 .

[0012] In combination with the first aspect, in a possible implementation, the fastener 114 includes at least one fixing member 1141 and at least one closing member 1142 .

[0013] In combination with the first aspect, in a possible implementation manner, the barrier member 113 is rectangular, and the fixing members 1141 are disposed at four corners of the barrier member 113 .

[0014] In combination with the first aspect, in a possible implementation, the built-in connector 11 includes a high-voltage connector 115 , an explosion-proof component 116 , and a low-voltage connector 117 .

[0015] According to a second aspect of the present application, a battery pack 20 is provided, which includes the battery pack connector 10 and a cover body 21 described in the first aspect, wherein the cover body 21 is provided with a first hole 211; the built-in connector 11 is detachably connected to the first hole 211 of the cover body 21 via the second end 112; wherein the size of the partition member 113 is not less than the size of the first hole 211.

[0016] In combination with the second aspect, in a possible implementation, the guide assembly 12 is used to guide the second end 112 into the first hole 211; the fixing member 1141 is used to install and fix the barrier member 113 and the cover body 21 from the outside of the cover body 21, and control the barrier member 113 and the cover body 21 to be in a fitted state; the closing member 1142 is used to block the first hole 211 of the cover body 21 when the fixing member 1141 fixes the barrier member 113 and the cover body 21.

[0017] In combination with the second aspect, in a possible implementation, the battery pack further includes a battery cell module 22 , and the first end 111 of at least one built-in connector 11 is connected to the battery cell module 22 .

[0018] An embodiment of the present application provides a battery pack connector 10 and a battery pack 20. The battery pack connector 10 can directly achieve electrical connection with the battery cell module in the battery pack 20 through the first end 111 of the built-in connector 11, thereby shortening the wiring harness requirements when the battery pack connector 10 is connected to the battery cell module, reducing the design and manufacturing costs of the battery pack 20, and avoiding the situation where the battery pack 20 fails due to a high harness wear rate caused by the connection harness being too long.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 A schematic diagram of the structure of a built-in connector 11 provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of disassembly and assembly of a guide assembly 12 and a built-in connector 11 provided in an embodiment of the present application;

[0023] Figure 3 Another structural schematic diagram of the built-in connector 11 provided in an embodiment of the present application;

[0024] Figure 4 is another structural schematic diagram of the built-in connector 11 provided in an embodiment of the present application;

[0025] Figure 5 is a schematic diagram of an exploded structure of a battery pack 20 provided in an embodiment of the present application from one perspective;

[0026] Figure 6 A schematic diagram of a matching structure of a battery pack connector 10 and a cover 21 provided in an embodiment of the present application;

[0027] Figure 7 Another exploded structural schematic diagram of the battery pack 20 provided in the embodiment of the present application from one perspective;

[0028] Figure 8 A schematic diagram of an exploded structure of the battery pack 20 provided in an embodiment of the present application from another perspective.

[0029] In the above picture:

[0030] 10-battery pack connector; 11-built-in connector; 111-first end of the built-in connector; 112-second end of the built-in connector; 113-blocking member of the built-in connector; 12-guide assembly; 201-plug of the guide assembly; 202-guide post of the guide assembly; 114-fastener; 1141-fixing member; 301-nut; 302-stud; 303-hole structure; 1142-closure; 401-inner sealing ring; 402-outer sealing ring; 115-high-voltage plug-in; 116-explosion-proof assembly; 117-low-voltage plug-in; 20-battery pack; 21-cover; 211-first hole of the cover; 212-second hole of the cover; 22-battery cell module; 23-housing; 1151-first high-voltage plug-in; 1152-second high-voltage plug-in; 221-battery cell unit assembly; 222-battery cell management assembly. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. In addition, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order of objects.

[0033] At present, the power battery in the prior art usually installs the battery connector on the cover of the battery box, and then realizes the electrical connection between the connector and the battery pack inside the battery. However, since the battery box cover and the box need to be separated in certain scenarios, the connection harness between the connector and the battery pack inside the battery needs to be kept long, and the long connection harness not only increases the design and manufacturing cost of the power battery, but also is prone to wear during use, resulting in the risk of battery failure.

[0034] Secondly, the existing technology can also complete the assembly of the battery box and the box cover first, and then achieve electrical connection with the battery pack inside the battery by installing an independent electrical connection panel on the battery box cover, but this method also increases the design and manufacturing costs of the power battery. Therefore, the high design and manufacturing costs of the power battery have become an urgent problem to be solved.

[0035] Based on this, an embodiment of the present application provides a battery pack connector 10, which can directly achieve electrical connection with the battery cell module in the battery pack 20 through the first end 111 of the built-in connector 11, thereby shortening the wiring harness requirements when the battery pack connector 10 is connected to the battery cell module, and reducing the design and manufacturing costs of the battery pack 20.

[0036] In one embodiment of the present application, the battery pack connector 10 includes at least one built-in connector 11. Specifically, the built-in connector 11 includes a first end 111 and a second end 112; wherein the first end 111 is used to connect the battery cell module, and a barrier 113 is disposed between the first end 111 and the second end 112 of the built-in connector 11; in the extension direction from the first end 111 to the second end 112, the barrier 113 has a larger cross-section than the second end 112.

[0037] In one possible implementation, the built-in connector 11 in the battery pack connector 10 can be used to connect the battery cell module inside the battery pack and the electrical components outside the battery pack, so that the battery cell module can transmit power to the external electrical components through the built-in connector 11.

[0038] Exemplarily, the built-in connector 11 may be a high-voltage connector or a low-voltage connector; the battery cell module may include a battery cell for storing and releasing electrical energy. For example, when the external electrical component is a high-voltage electrical component or a low-voltage electrical component of an electric vehicle, the high-voltage electrical component may be connected to the high-voltage connector, and the low-voltage electrical component may be connected to the low-voltage connector.

[0039] In a possible implementation, the built-in connector 11 may include a first end 111 for connecting the battery cell module inside the battery pack, a second end 112, and a barrier 113 disposed between the first end 111 and the second end 112. Specifically, in the extension direction from the first end 111 to the second end 112, the cross-sectional area of ​​the barrier 113 is greater than the cross-sectional area of ​​the second end 112.

[0040] Exemplarily, the second end 112 can be used to connect to an external electrical component. When the first end 111 is connected to the battery module and the second end 112 is connected to the external electrical component, the external electrical component can receive electrical energy provided by the battery module through the second end 112.

[0041] It should be noted that the cross-sectional area of ​​the connection between the first end 111 and the barrier 113 may be the same as or different from the cross-sectional area of ​​the barrier 113 , and no specific limitation is imposed herein.

[0042] Exemplarily, the barrier 113 may be a flange composed of two parallel circular or square panels. Specifically, the first end 111 and the second end 112 may be disposed on both sides of the flange, respectively.

[0043] For example, Figure 1 1 is a schematic diagram of a structure of a built-in connector 11 provided in an embodiment of the present application. Figure 1 As shown, the first end 111 and the second end 112 are respectively disposed on two sides of the barrier 113 , and the cross-sectional area of ​​the barrier 113 is larger than the cross-sectional area of ​​the second end 112 .

[0044] A battery pack connector 10 provided in an embodiment of the present application can directly achieve electrical connection with the battery cell module in the battery pack 20 through the first end 111 of the built-in connector 11, thereby shortening the wiring harness requirements when the battery pack connector 10 is connected to the battery cell module, reducing the design cost of the battery pack 20, and avoiding the situation where the battery pack 20 fails due to a high harness wear rate caused by the connection harness being too long.

[0045] In another embodiment of the present application, a connection method of each component of the built-in connector 11 is also introduced. Exemplarily, the barrier 113 and the first end 111 are an integrally formed structure; and the second end 112 is detachably connected to the integrally formed structure.

[0046] In the embodiment of the present application, by means of the detachable connection between different parts of the built-in connector 11, when an abnormality occurs in the built-in connector 11, the one-piece structure formed by the first end 111 and the barrier 113 or the second end 112 can be flexibly replaced, thereby ensuring the normal operation of the built-in connector 11.

[0047] In a possible implementation, the barrier member 113 in the built-in connector 11 may form an integrally formed structure with the first end 111 .

[0048] For example, Figure 1 As shown, when the barrier member 113 is a flange, the first end 111 may be fixedly connected to the flange; for example, the flange and the first end 111 may be fixedly connected by welding.

[0049] In a possible implementation, the second end 112 of the built-in connector 11 can be detachably connected to the above-mentioned integrally formed structure.

[0050] Exemplarily, the second end 112 can be detachably connected to the above-mentioned integrally formed structure by being movably connected to the barrier 113. For example, a threaded assembly can be respectively provided on the barrier 113 and on a side of the second end 112 close to the barrier 113, so that the second end 112 can be movably connected to the barrier 113 by rotating the thread.

[0051] In another embodiment of the present application, other structural distributions of the battery pack connector 10 are also introduced. Exemplarily, the battery pack connector 10 further includes a guide assembly 12; one end of the guide assembly 12 is detachably connected to the second end 112.

[0052] In the embodiment of the present application, based on the detachable connection between the guide component 12 and the second end 112 , the guide component 12 can be used to drive the built-in connector 11 to move and adjust the position of the built-in connector 11 .

[0053] In a possible implementation, the guide component 12 can drive the built-in connector 11 to move by its own movement based on the connection state with the second end 112 of the built-in connector 11. One end of the guide component 12 can be matched and connected with the second end 112.

[0054] Exemplarily, the guide assembly 12 may include a matching piece and a guide piece that match the size of the second end 112, wherein the matching piece and the guide piece are detachably connected. Specifically, the guide assembly 12 and the built-in connector 11 may be connected first by connecting the matching piece to the second end 112, and then the guide piece may be used to drive the entire built-in connector 11 to move.

[0055] For example, Figure 2 Schematic diagram of disassembly and assembly of the guide assembly 12 and the built-in connector 11 provided in the embodiment of the present application. Figure 2 As shown, the matching member of the guide assembly 12 may be a plug 201; and the guide member of the guide assembly 12 may be a guide post 202. Figure 2 As shown in (a), the guide assembly 12 can be connected to the built-in connector 11 through the mating connection between the plug 201 and the second end 112.

[0056] It should be noted that the plug 201 and the guide post 202 may be made of elastic insulating material; for example, the plug 201 may be made of rubber, and the guide post 202 may be made of plastic, and no specific limitation is made here.

[0057] In another embodiment of the present application, other structural distributions of the built-in connector 11 are also introduced. Exemplarily, a fastener 114 is disposed on one side of the barrier 113 close to the second end 112 .

[0058] In the embodiment of the present application, the connection between the barrier 113 and other components can be reinforced by the fastener 114 of the built-in connector 11 .

[0059] Exemplarily, the fastener 114 can be used to fix the barrier 113 to other components so that the built-in connector 11 can be fixedly connected to other components of the battery pack 20; secondly, the fastener 114 can also be used to form a sealing state between the barrier 113 and other components.

[0060] In another embodiment of the present application, a specific structural distribution of the fastener 114 is also introduced. Exemplarily, the fastener 114 includes at least one fixing member 1141 and at least one closing member 1142 .

[0061] In the embodiment of the present application, the connection state between the built-in connector 11 and other components can be fixed by the fixing member 1141 in the fastener 114, and the barrier member 113 and other components can be sealed by the closing member 1142 in the fastener 114.

[0062] In a possible implementation, the fastener 114 may include at least one fixing member 1141. Exemplarily, the fixing member 1141 may be a bolt assembly.

[0063] Specifically, the hole-like structure may be distributed on the barrier 113 of the built-in connector 11. For example, the hole-like structure may be distributed on the barrier 113 except the second end 112. Figure 3 1 is another structural diagram of the built-in connector 11 provided in the embodiment of the present application. When the fixing member 1141 includes a nut 301 and a stud 302, as shown in FIG. Figure 3 As shown, at least one nut 301 may be placed on a side of the hole structure 303 close to the second end 112 .

[0064] In a possible implementation, the fastener 114 may further include at least one sealing member 1142. Exemplarily, the sealing member 1142 may be a sealing ring.

[0065] Exemplarily, the closure member 1142 may be a sealing ring that matches the size of the barrier member 113 or the second end 112. Specifically, when the sealing ring matches the size of the barrier member 113, the shape and length of the sealing ring may be consistent with the shape and length of the barrier member 113; when the sealing ring matches the size of the second end 112, the sealing ring may surround the outside of the second end 112.

[0066] For example, Figure 4 is another structural schematic diagram of the built-in connector 11 provided in the embodiment of the present application, such as Figure 4 As shown, an inner sealing ring 401 that can surround the outside of the second end 112 can be firstly provided on the side of the barrier 113 close to the second end 112, and then an outer sealing ring 402 that can surround the outside of the barrier 113 can be provided, thereby achieving a double-layer sealing effect between other components of the barrier 113.

[0067] It should be noted that, since the barrier 113 is also provided with a hole structure 303 for accommodating the stud 302 , in order to ensure the connection between the barrier 113 and other components, the sealing ring needs to be arranged at a position away from the hole structure 303 .

[0068] Optionally, the fixing member 1141 and the closing member 1142 may be formed into the fastener 114 by insert injection molding. Specifically, the fixing member 1141 may be placed at a corresponding position of the injection mold, and then plastic may be injected into the injection mold until the plastic inside the mold cools and solidifies to obtain the fastener 114 including the fixing member 1141 and the closing member 1142. The closing member 1142 may be a cooled and solidified plastic.

[0069] It should be noted that the size of the injection mold can match the size of the barrier 113 ; the specific position of the fixing member 1141 in the injection mold can match the position of the hole structure 303 on the barrier 113 .

[0070] In another embodiment of the present application, the specific shape of the barrier 113 and the specific location of the fixing member 1141 are also introduced. For example, the barrier 113 is rectangular, and the fixing members 1141 are arranged at the four corners of the barrier 113.

[0071] In the embodiment of the present application, by arranging the fixing member 1141 at the four corners of the barrier member 113 , it is possible to prevent the fixing member 1141 from interfering with the connection between the first end 111 and the battery cell module or the second end 112 and other electrical devices.

[0072] In another embodiment of the present application, other structural components of the built-in connector 11 are also introduced. Exemplarily, the built-in connector 11 includes a high-voltage connector 115 , an explosion-proof component 116 , and a low-voltage connector 117 .

[0073] In a possible implementation, the built-in connector 11 may include at least one high-voltage connector 115 , an explosion-proof component 116 , and a low-voltage connector 117 .

[0074] Exemplarily, the explosion-proof component 116 may be an explosion-proof valve for preventing overpressure inside the container, such as a pressure relief valve, a vacuum valve, a protective safety valve, an overpressure protection valve, a bursting disc, and a bursting cover.

[0075] The present application also provides a battery pack 20, Figure 5 FIG. 2 is a schematic diagram of an exploded structure of a battery pack 20 provided in an embodiment of the present application from one perspective. Figure 5 As shown, the battery pack 20 includes a battery pack connector 10 and a cover body 21, and the cover body 21 is provided with a first hole 211; the built-in connector 11 is detachably connected to the first hole 211 of the cover body 21 through the second end 112; wherein the size of the barrier 113 is not less than the size of the first hole 211.

[0076] In a possible implementation, the cover 21 in the battery pack 20 can be used to close the internal space of the battery pack 20 and to fix the built-in connector 11. Specifically, the cover 21 can fix the built-in connector 11 through the first hole 211 that matches the built-in connector 11.

[0077] Exemplarily, the size of the first hole 211 may match the size of the built-in connector 11. For example, Figure 6 2 is a schematic diagram of a matching structure of a battery pack connector 10 and a cover 21 provided in an embodiment of the present application. Figure 6 As shown, the first hole 211 on the cover body 21 can be arranged corresponding to the built-in connector 11; the explosion-proof component 116 can be installed on the top of the cover plate 21. Specifically, the shape and area of ​​the first hole 211 can be the same as the shape and area of ​​the cross section of the built-in connector 11.

[0078] It should be noted that when the explosion-proof component 116 is a pressure release valve, it can automatically release the internal pressure of the cover body 21 when the internal pressure value of the cover body 21 reaches a preset value; when the explosion-proof component 116 is a vacuum valve, it can automatically open and let in air when excessive vacuum is generated inside the cover body 21, thereby balancing the pressure inside and outside the cover body 21; when the explosion-proof component 116 is a protective safety valve, it can automatically replenish the pressure when the internal pressure value of the cover body 21 is lower than the preset value, thereby maintaining the pressure inside the cover body 21 stable; when the explosion-proof component 116 is an overpressure protection valve, it can automatically release the internal pressure of the cover body 21 when overpressure occurs inside the cover body 21.

[0079] Exemplarily, the built-in connector 11 is detachably connected to the cover body 21. Specifically, the second end 112 can pass through the first hole 211 on the cover body 21 to achieve the detachable connection between the built-in connector 11 and the cover body 21.

[0080] In a possible implementation, the size of the barrier 113 may be set to be not less than the size of the first hole 211 so that the barrier 113 can fix the position of the built-in connector 11, thereby preventing the built-in connector 11 from detaching from the cover 21 through the first hole 211.

[0081] Exemplarily, the area of ​​the barrier 113 can be set to be no less than the area of ​​the first hole 211 (i.e., the area of ​​the second end 112 of the built-in connector 11), so that when the second end 112 passes through the cover 21, the barrier 113 blocks the built-in connector 11 under the cover 21.

[0082] In a possible implementation, the battery pack 20 may further include a cell module 22 and a housing 23. Specifically, the cell module 22 may be disposed inside the cavity of the housing 23, and the battery pack connector 10 may be disposed above the cell module 22 and maintained in connection with the cell module 22.

[0083] For example, the size of the housing 23 may match the size of the battery module 22. Figure 7 FIG. 2 is another exploded structural diagram of a battery pack 20 provided in an embodiment of the present application from one perspective, such as Figure 7 As shown, the length, width and height of the shell 23 can be respectively consistent with the length, width and height of the battery module 22 , and the battery module 22 can be completely placed inside the cavity of the shell 23 .

[0084] In a possible implementation, the cover 21 of the battery pack 20 may be detachably connected to the housing 23 of the battery pack 20. Exemplarily, the cover 21 and the housing 23 may be connected by a bolt assembly.

[0085] Specifically, holes may be provided at the edges of the cover 21 and the shell 23 , respectively, so that the bolt assembly can pass through the holes on the cover 21 and the shell 23 at the same time, thereby connecting the cover 21 and the shell 23 .

[0086] A battery pack 20 provided in an embodiment of the present application can first realize the electrical connection between the built-in connector 11 and the battery cell module 22 based on the detachable connection between the built-in connector 11 and the cover body 21, and then realize the assembly between the built-in connector 11 and the cover body 21 through the first hole 211 on the cover body 21, thereby shortening the wiring harness requirements when connecting the built-in connector 11 and the battery cell module 22, reducing the design cost of the battery pack 20, and avoiding the situation where the battery pack 20 fails due to a high harness wear rate caused by the connection harness being too long.

[0087] In another embodiment of the present application, a specific assembly method inside the battery pack 20 is also introduced. Exemplarily, the guide assembly 12 is used to guide the second end 112 into the first hole 211; the fixing member 1141 is used to install and fix the barrier member 113 and the cover body 21 from the outside of the cover body 21, and control the barrier member 113 and the cover body 21 to be in a fitted state; the closing member 1142 is used to block the first hole 211 of the cover body 21 when the fixing member 1141 fixes the barrier member 113 and the cover body 21.

[0088] In the embodiment of the present application, on the one hand, the guide assembly 12 can be used to drive the built-in connector 11 to move so that the built-in connector 11 passes through the first hole 211; on the other hand, the guide assembly 12 can be used to adjust the position of the built-in connector 11 when the built-in connector 11 passes through the first hole 211.

[0089] In a possible implementation, when the cover 21 of the battery pack 20 is in a connected state with the housing 23 , the second end 112 of the built-in connector 11 may pass through the first hole 211 of the cover 21 .

[0090] Exemplarily, the guide component 12 can guide the second end 112 into the first hole 211 through its own movement based on the connection state with the above-mentioned second end 112, so that the second end 112 passes through the first hole 211 from the inside of the cover body 21; and when the second end 112 passes through the first hole 211, the position of the built-in connector 11 is adjusted by the guide component 12 so that the barrier 113 fits with the cover body 21.

[0091] Optionally, when the one-piece structure formed by the second end 112 of the built-in connector 11, the barrier member 113 and the first end 111 is in a disassembled state, the guide assembly 12 can, based on the connection state with the second end 112, allow the second end 112 to pass through the first hole 211 from the outside of the cover body 21, and achieve connection between the second end 112 and the one-piece structure inside the cover body 21 by adjusting its own direction.

[0092] It should be noted that when the barrier member 113 is in contact with the cover body 21, Figure 2 As shown in (b), the guide assembly 12 can be disassembled to separate the matching piece of the guide assembly 12 from the second end 112.

[0093] In a possible implementation, when the guide assembly 12 guides the second end 112 into the first hole 211, the fixing member 1141 can be installed outside the cover body 21 to fix the barrier member 113 and the cover body 21, so that the barrier member 113 and the cover body 21 are in a fitted state.

[0094] For example, Figure 6 As shown, a second hole 212 corresponding to the hole-like structure 303 on the barrier 113 can be provided on the cover body 21, so that when the fixing member 1141 includes a nut 301 and a stud 302 and the nut 301 is placed on the side of the hole-like structure 303 close to the cover plate 21, the stud 302 can penetrate into the internal space of the cover body 21 through the second hole 212 from the outside of the cover body 21 and cooperate with the nut 301 to connect, thereby achieving complete fit between the barrier 113 and the cover body 21.

[0095] Secondly, when the barrier member 113 and the cover body 21 are in a fitted state, the sealing member 1142 can be used to block the first hole 211 of the cover body 21 .

[0096] For example, Figure 7As shown, when the battery module 22 is completely placed inside the cavity of the shell 23, the second end 112 of the built-in connector 11 passes through the first hole 211 of the cover 21, and the barrier 113 of the built-in connector 11 is in a fitted state with the cover 21.

[0097] In another embodiment of the present application, a specific connection method inside the battery pack 20 is also introduced. Exemplarily, the high-voltage plug-in 115 specifically includes a first high-voltage plug-in 1151 and a second high-voltage plug-in 1152; the battery cell module 22 specifically includes a battery cell unit assembly 221 and a battery cell management assembly 222; wherein the positive terminal of the battery cell unit assembly 221 is connected to the first end of the first high-voltage plug-in 1151; the negative terminal of the battery cell unit assembly 221 is connected to the high-voltage negative terminal of the battery cell management assembly 222; the high-voltage positive terminal of the battery cell management assembly 222 is connected to the first end of the second high-voltage plug-in 1152; and the low-voltage plug-in 117 is connected to the low-voltage ends of the first high-voltage plug-in 1151, the second high-voltage plug-in 1152, and the battery cell management assembly 222, respectively.

[0098] In the embodiment of the present application, the electrical system connection of the battery pack 20 can be achieved through electrical connection between different built-in connectors 11 and different components inside the battery cell module 22.

[0099] In a possible implementation, the battery cell module 22 may include a battery cell unit component 221 and a battery cell management component 222 .

[0100] Exemplarily, the battery cell assembly 221 may be a battery cell (i.e., a basic component unit of a battery) for storing and releasing electrical energy. The battery cell assembly 221 may be composed of a positive electrode, a negative electrode, and an electrolyte. It should be noted that when the battery cell assembly 221 is present in an electric vehicle and an energy storage system, the battery cell assembly 221 may constitute a battery pack to transmit electrical energy to external connection components.

[0101] Exemplarily, the battery management component 222 may be a device that integrates battery management functions and battery diagnostic functions, for example, a battery management system (BMS) and a battery diagnostic unit (BDU) all-in-one.

[0102] Specifically, the BMS&BDU integrated machine can be used to monitor the battery voltage, temperature, current and other parameters, and control the battery charging and discharging process, so as to reduce the probability of battery failure through real-time monitoring of the battery condition.

[0103] It should be noted that when the battery cell module 22 is disposed inside the cavity of the shell 21 , the above-mentioned BMS&BDU integrated machine can be disposed above the battery cell unit assembly 221 .

[0104] In a possible implementation, the built-in connector 11 can be connected to the battery module 22 via a conductive component, so that the battery module 22 can provide electrical energy to the built-in connector 11 via the conductive component.

[0105] Exemplarily, the conductive component may be a conductive strip capable of connecting a plurality of circuits, specifically used to transmit current from one point to another, such as a busbar.

[0106] Specifically, wires or cables of different circuits can be directly connected to the terminals of the busbar to achieve the connection between the built-in connector 11 and the battery module 22. Secondly, when different circuits are in a connected state through the busbar, the connection between each circuit and the busbar can be fixed by a bolt assembly.

[0107] For example, Figure 8 FIG. 2 is a schematic diagram of an exploded structure of a battery pack 20 provided in an embodiment of the present application from another perspective. Figure 8 As shown, the positive terminal of the cell unit assembly 221 can be connected to the first end of the first high-voltage plug-in 1151 through a busbar, and the high-voltage positive terminal of the cell management assembly 222 can be connected to the first end of the second high-voltage plug-in 1152. The first high-voltage plug-in 1151 can be the positive electrode of the high-voltage plug-in 115 in the battery pack 20; the second high-voltage plug-in 1152 can be the negative electrode of the high-voltage plug-in 115 in the battery pack 20; the first high-voltage plug-in 1151 and the second high-voltage plug-in 1152 can be connected to other ports using copper bars respectively.

[0108] like Figure 8 As shown, the negative terminal of the battery cell unit assembly 221 can be connected to the high-voltage negative terminal of the battery cell management assembly 222 through a bus, and the low-voltage plug-in 117 can be connected to the first high-voltage plug-in 1151, the second high-voltage plug-in 1152 and the low-voltage end of the battery cell management assembly 222 respectively.

[0109] It should be noted that the above-mentioned first high-voltage plug-in 1151, the second high-voltage plug-in 1152 and the low-voltage plug-in 117 are usually connected to different ports of the battery module 22 by means of a connecting harness, and the connecting harness is specifically a soft structure. Therefore, when each built-in connector 11 is connected to the battery module 22, each built-in connector 11 is in a semi-fixed state. At this time, the position of each plug-in can be adjusted by moving the guide component 12 based on the connection state between the guide component 12 and the built-in connector 11.

[0110] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. A battery pack connector (10), characterized in that: include: At least one built-in connector (11); the built-in connector (11) comprises a first end (111) and a second end (112); wherein the first end (111) is used to connect a battery cell module, and a barrier member (113) is provided between the first end (111) and the second end (112) of the built-in connector (11); in the extension direction from the first end (111) to the second end (112), the barrier member (113) has a larger cross-section than the second end (112).

2. The battery pack connector (10) according to claim 1, characterized in that: The barrier member (113) and the first end (111) are an integrally formed structure; and the second end (112) is detachably connected to the integrally formed structure.

3. The battery pack connector (10) according to claim 1, characterized in that: The battery pack connector (10) further comprises a guide assembly (12); one end of the guide assembly (12) is detachably connected to the second end (112).

4. The battery pack connector (10) according to claim 1, characterized in that: A fastener (114) is provided on one side of the barrier (113) close to the second end (112).

5. The battery pack connector (10) according to claim 4, characterized in that: The fastener (114) includes at least one fixing member (1141) and at least one closing member (1142).

6. The battery pack connector (10) according to claim 5, characterized in that: The barrier member (113) is rectangular, and the fixing members (1141) are arranged at the four corners of the barrier member (113).

7. The battery pack connector (10) according to any one of claims 1 to 6, characterized in that: The built-in connector (11) comprises a high-voltage connector (115), an explosion-proof component (116) and a low-voltage connector (117).

8. A battery pack (20), characterized in that: Comprising the battery pack connector (10) according to any one of claims 1 to 7 and a cover body (21), wherein the cover body (21) is provided with a first hole (211); The built-in connector (11) is detachably connected to the first hole (211) of the cover body (21) via the second end (112); wherein the size of the barrier (113) is not smaller than the size of the first hole (211).

9. The battery pack (20) according to claim 8, characterized in that: The guide assembly (12) is used to guide the second end (112) into the first hole (211); the fixing member (1141) is used to install and fix the barrier member (113) and the cover body (21) from the outside of the cover body (21), and control the barrier member (113) and the cover body (21) to be in a fitted state; the closing member (1142) is used to block the first hole (211) of the cover body (21) when the fixing member (1141) is fixedly connected to the barrier member (113) and the cover body (21).

10. The battery pack (20) according to claim 8, characterized in that: The battery pack also includes a battery cell module (22), and a first end (111) of at least one built-in connector (11) is connected to the battery cell module (22).

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