CN217387410U - Battery pack for electric vehicle and electric vehicle - Google Patents

Abstract

The embodiment of the application provides a battery package and electric motor car for electric motor car, the battery package includes casing, plug and connecting wire, be provided with the battery module in the casing, be provided with the installing port on the casing, the plug can dismantle set up in the installing port, the one end of connecting wire is connected to the battery module, the other end of connecting wire can be dismantled and be fixed in on the plug. One end of the connecting wire in the battery pack is connected to the battery module, and the other end of the connecting wire is detachably fixed on the plug. When the plug needs to be changed, can follow earlier the plug is pulled down the installing port, then the disconnection the connecting wire with the connection of plug has improved the convenience that the plug was changed is on the use experience basis of guaranteeing the electric motor car, has reduced the use cost of electric motor car.

Description

Battery pack for electric vehicle and electric vehicle

Technical Field

The application belongs to the technical field of battery structures, and particularly relates to a battery pack for an electric vehicle and the electric vehicle.

Background

With the improvement of living standard and the continuous increase of living demand of people, the electric vehicle which is suitable for consumption upgrade and market demand continuously enters the daily life of people. Especially, the electric vehicle has small size and low riding difficulty, so that the electric vehicle is more convenient, timely and efficient to use.

However, the battery pack in the electric vehicle needs to be charged frequently, and the endurance of the battery pack after being used for a period of time can be greatly reduced, so that the problem of battery replacement also exists. The charging socket of the battery pack becomes a wearing part and needs to be replaced once in 2-3 months on average. But the charging socket of traditional battery package changes the degree of difficulty greatly, and the repair cost of the charging socket after changing is also higher moreover, has not only reduced user's experience, has also increased use cost simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a battery pack for an electric vehicle and a new technical solution of an electric vehicle.

According to a first aspect of the present application, there is provided a battery pack for an electric vehicle, including:

the battery module is arranged in the shell, and an installation opening is formed in the shell;

the plug is detachably arranged in the mounting port;

and one end of the connecting wire is connected to the battery module, and the other end of the connecting wire is detachably fixed on the plug.

Optionally, the plug includes a plug main body and a fixing member disposed on the plug main body and facing the inner side of the housing, the fixing member is provided with a fixing hole, and the other end of the connecting wire is inserted into the fixing hole.

Optionally, the plug further comprises a locking member, the fixing member comprises an annular side wall, the annular side wall surrounds the fixing hole, a locking through hole communicated to the fixing hole is formed in the annular side wall, and the locking member is inserted into the locking through hole and abuts against the connecting wire.

Optionally, a metal spring is arranged in the plug, and the other end of the connecting wire is inserted into the fixing hole and electrically connected with the metal spring.

Optionally, a plurality of fixing pieces are arranged on the plug main body, and adjacent fixing pieces are separated by a baffle.

Optionally, the plug further includes a sealing ring, a stepped structure is formed on an outer periphery of the plug main body, and the sealing ring is sleeved on the stepped structure and clamped between the stepped structure and an edge of the mounting opening.

Optionally, one side of the sealing ring facing the mounting opening is provided with an annular rib, and the annular rib abuts against the edge of the mounting opening.

Optionally, the plug is fixed in the mounting opening by a locking fitting so that the annular rib abuts to an edge of the mounting opening in a deformed state.

Optionally, the pressure relief device further comprises a pressure relief assembly, wherein a pressure relief hole is formed in the shell, and the pressure relief assembly is installed in the pressure relief hole.

According to a second aspect of the present application, there is provided an electric vehicle including the battery pack of the first aspect.

One technical effect of the embodiment of the application is as follows:

the embodiment of the application provides a battery pack for an electric vehicle, the battery pack comprises a shell, a plug and a connecting wire. One end of the connecting wire in the battery pack is connected to the battery module, and the other end of the connecting wire is detachably fixed on the plug. When the plug needs to be changed, can follow earlier the plug is pulled down the installing port, then the disconnection the connecting wire with the connection of plug has improved the convenience that the plug was changed is on the use experience basis of guaranteeing the electric motor car, has reduced the use cost of electric motor car.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a first schematic diagram illustrating the mating of a plug and a connecting wire of a battery pack for an electric vehicle according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a battery pack for an electric vehicle according to an embodiment of the present disclosure;

fig. 3 is a first schematic diagram of a battery pack for an electric vehicle according to an embodiment of the present disclosure;

fig. 4 is a second schematic diagram of a battery pack for an electric vehicle according to an embodiment of the present disclosure;

fig. 5 is a third schematic diagram of a battery pack for an electric vehicle according to an embodiment of the present disclosure;

fig. 6 is a second schematic diagram illustrating the mating of a plug and a connecting wire of a battery pack for an electric vehicle according to an embodiment of the present application;

FIG. 7 is a cross-sectional view of FIG. 6;

fig. 8 is an enlarged view of fig. 7 at a.

Wherein:

1. a housing; 11. an installation port; 12. a first housing; 13. a second housing; 14. a housing nut; 15. a bottom case; 16. a bottom shell nut; 17. a housing seal ring; 2. a battery module; 3. a plug; 31. a plug main body; 32. a fixing member; 33. a locking member; 34. a metal spring sheet; 4. a connecting wire; 41. a power line; 42. a control line; 43. a power supply terminal; 44. a control terminal; 5. a baffle plate; 6. a seal ring; 7. an annular convex rib; 8. a pressure relief assembly; 9. a lock fitting; 10. a handle.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 8, an embodiment of the present application provides a battery pack for an electric vehicle, where the electric vehicle may be a two-wheeled electric bicycle, a two-wheeled electric motorcycle, a three-wheeled electric bicycle, or the like, or a three-wheeled electric motorcycle, and the battery pack includes:

the plug comprises a shell 1, a plug 3 and a connecting wire 4, wherein a battery module 2 is arranged in the shell 1, a mounting hole 11 is formed in the shell 1, and the mounting hole 11 is communicated with the inner space and the outer space of the shell 1, so that the plug 3 is conveniently installed into the mounting hole 11 from the outside of the shell 1, and then the electric connection with the battery module 2 is realized.

Referring to fig. 2, the plug 3 is detachably disposed in the mounting opening 11, for example, the plug 3 may be fixed on the mounting opening 11 by screws, or a detachable connection relationship of clamping or plugging is formed between the plug 3 and the mounting opening 11, so as to facilitate the mounting and dismounting of the plug 3 at the mounting opening 11.

Referring to fig. 1 and 2, one end of the connection wire 4 is connected to the battery module 2, and the other end of the connection wire 4 is detachably fixed to the plug 3. Specifically, the connection line 4 may include a power line 41 and a control line 42, the power line 41 includes a positive power line and a negative power line, the ends of the power line 41 and the control line 42 are respectively riveted or welded with a power terminal 43 and a control terminal 44, and the power line 41 and the control line 42 are electrically connected to the battery module 2 through a male metal terminal and a female metal terminal, so as to ensure the power transmission of the battery module 2.

And the other end of the connecting wire 4 is detachably fixed on the plug 3, for example, the connecting wire 4 can be fixed on the plug 3 through a screw, or the connecting wire 4 and the plug 3 form a detachable connection relationship of clamping or splicing. When the plug 3 needs to be replaced after being damaged, the plug 3 can be firstly detached from the mounting port 11, then the connection between the connecting wire 4 and the plug 3 is disconnected, so that the plug 3 can be quickly detached, and then a new plug 3 is replaced so as to realize the normal use of the battery pack.

In addition, referring to fig. 3 to 5, a handle 10 is connected to the housing 1, and since the battery pack of the electric vehicle has a small structure, the handle 10 can improve the portability of the battery pack to facilitate the handheld operation of the battery pack during the detachment and installation.

The embodiment of the application provides the battery pack comprises a shell 1, a plug 3 and a connecting wire 4, a battery module 2 is arranged in the shell 1, a mounting opening 11 is formed in the shell 1, the plug 3 can be detachably arranged in the mounting opening 11, one end of the connecting wire 4 is connected to the battery module 2, and the other end of the connecting wire 4 can be detachably fixed on the plug 3. When the plug 3 needs to be changed, the plug 3 can be firstly detached from the mounting port 11 and then disconnected from the connecting wire 4 and the plug 3, so that the plug 3 can be rapidly detached and the convenience of changing the plug 3 is improved, and the use cost of a user is reduced on the basis of ensuring the use experience of an electric vehicle user.

Optionally, referring to fig. 1 and 2, the plug 3 includes a plug main body 31 and a fixing member 32 disposed on the plug main body 31 and facing the inside of the housing 1, the fixing member 32 is provided with a fixing hole, and the other end of the connecting wire 4 is plugged into the fixing hole.

Specifically, when the other end of the connecting wire 4 is fixedly connected with the plug 3, the other end of the connecting wire 4 may be peeled off, and then the exposed wire core at the other end of the connecting wire 4 is reinforced by dipping tin, and the reinforced wire core is inserted into the fixing hole, for example, the wire core is inserted into the fixing hole in an interference manner, so that the electric energy transmission of the battery module 2 can be realized through the transmission between the connecting wire 4 and the plug 3 on the basis of ensuring the connection stability between the connecting wire 4 and the plug 3.

Optionally, referring to fig. 1, the plug 3 further includes a locking member 33, the fixing member 32 includes an annular side wall, the annular side wall surrounds the fixing hole, a locking through hole communicated to the fixing hole is formed in the annular side wall, and the locking member 33 is inserted into the locking through hole and abuts against the connecting wire 4.

Specifically, when the other end of connecting wire 4 peg graft in the fixed orifices, in order to increase the other end of connecting wire 4 is in firm degree in the fixed orifices, can pass through retaining member 33 passes compress tightly behind the locking through-hole the other end of connecting wire 4 specifically can be that the locking through-hole has the internal thread, and retaining member 33 can be the screw rod, compresses tightly connecting wire 4 behind the screw rod and the interior screw-thread fit in the locking through-hole, in order to guarantee connecting wire 4 is in set up stability in the fixed orifices.

In addition, the locking member 33 may be a screw with a thread anti-loose glue or a self-loose washer, so as to ensure the reliability of the fit between the locking member 33 and the locking through hole. When the plug 3 needs to be replaced, the locking piece 33 in the locking through hole can be firstly loosened, then the connecting wire 4 is pulled out from the fixing hole, so that the plug 3 and the connecting wire 4 can be separated, and then a new plug 3 is replaced so as to form a complete battery pack structure.

Optionally, referring to fig. 6 and 7, a metal elastic sheet 34 is disposed in the plug 3, and the other end of the connecting wire 4 is inserted into the fixing hole and electrically connected to the metal elastic sheet 34.

Specifically, the plug main body 31 may be provided with a jack for facilitating plug insertion, and both the fixing hole and the jack may extend to the metal elastic sheet 34. When the other end of the connecting wire 4 is inserted into the fixing hole, the other end of the connecting wire 4 can be riveted or welded on the metal elastic sheet 34, so that the connection stability and the electric conduction performance of the connecting wire 4 and the metal elastic sheet 34 are ensured. When a plug is inserted into the jack, the plug can abut against the metal elastic sheet 34 to realize the charging operation of the battery module 2.

Alternatively, referring to fig. 1, a plurality of fixing pieces 32 are disposed on the plug main body 31, and adjacent fixing pieces 32 are separated by a baffle 5.

Specifically, the fixing element 32 is configured to fix an end of the connecting wire 4, and when the number of the fixing elements 32 is multiple, the fixing elements 32 and the connecting wire 4 may be matched one by one, or one fixing element 32 may be fixed with multiple connecting wires 4, so that the number of the connecting wires 4 is also multiple. In order to avoid the mutual contact between the connecting lines 4 on the adjacent fixing members 32, the adjacent fixing members 32 can be spaced apart by the baffle 5. The baffle 5 can be an insulating baffle to prevent short circuit between the connecting wires 4 on the adjacent fixing members 32, increase the creepage distance between the connecting wires 4 on the adjacent fixing members 32, and improve the independence and reliability between the connecting wires 4.

Optionally, referring to fig. 7 and 8, the battery pack further includes a sealing ring 6, an outer periphery of the plug main body 31 forms a stepped structure, and the sealing ring 6 is sleeved on the stepped structure and is clamped between the stepped structure and an edge of the mounting opening 11.

Specifically, the stepped structure on the plug main body 31 may include a plug section extending into the mounting opening 11 and an extension section stopping outside the mounting opening 11, and the sealing ring 6 is sleeved on the plug section of the stepped structure. When the plug main body 31 is mounted on the mounting opening 11, the plug section of the stepped structure may be inserted into the mounting opening 11, and the edge of the mounting opening 11 may push the sealing ring 6 to move toward the extension section close to the stepped structure, so that the sealing ring 6 is clamped between the extension section of the stepped structure and the edge of the mounting opening 11, thereby increasing the sealing performance of the battery pack.

Optionally, referring to fig. 8, a side of the sealing ring 6 facing the mounting opening 11 is provided with an annular rib 7, and the annular rib 7 abuts against an edge of the mounting opening 11.

Specifically, the annular rib 7 may be integrally formed on one side of the sealing ring 6 facing the mounting opening 11, or the independent annular rib 7 may be attached to one side of the sealing ring 6 facing the mounting opening 11, and the cross-sectional size of the annular rib 7 is smaller than that of the sealing ring 6, so as to fill a gap between the sealing ring 6 and the edge of the mounting opening 11, and improve the sealing performance and the waterproof performance of the battery pack upper housing 1. In addition, the number of the annular ribs 7 may be one or more, which is not limited in the embodiment of the present application.

Alternatively, referring to fig. 2 and 3, the plug 3 is fixed in the mounting opening 11 by a lock fitting 9 so that the annular bead 7 abuts to an edge of the mounting opening 11 in a deformed state.

Specifically, since the annular rib 7 is provided between the seal ring 6 and the edge of the mounting opening 11, in order to embody the sealing and waterproof effects of the annular rib 7, the annular rib 7 may be clamped between the plug main body 31 and the edge of the mounting opening 11. When the plug 3 is fixed in the mounting opening 11 through the locking fitting 9, for example, the locking fitting 9 may be a screw, and the locking fitting 9 may pass through the threaded hole of the plug main body 31 and then be connected with the edge of the mounting opening 11, so as to provide a clamping force for clamping the annular rib 7 between the plug main body 31 and the edge of the mounting opening 11, thereby ensuring the sealing performance and the waterproof performance of the housing 1.

In addition, the plug 3 can also be connected to the mounting port 11 in a clamping or buckling manner, and the sealing performance of the housing 1 can be ensured on the basis of realizing the connection stability of the plug 3 and the mounting port 11.

Optionally, referring to fig. 2, the battery pack further includes a pressure relief assembly 8, a pressure relief hole is formed in the housing 1, and the pressure relief assembly 8 is mounted in the pressure relief hole. The battery module 2 in the housing 1 can generate more high-temperature gas under the condition of long-term operation, the sealing performance of the housing 1 is higher, the high-temperature gas can be gathered in the housing 1 for a long time, the pressure in the housing 1 can be greatly increased, and the risk of explosion or fire of the battery belt can be caused. And when the pressure relief assembly 8 is arranged at the pressure relief hole on the shell 1, the internal and external spaces of the shell 1 can be communicated when the pressure in the shell 1 is overlarge, so that the use safety of the battery pack is ensured.

In addition, referring to fig. 2, the housing 1 includes a first housing 12 and a second housing 13, the first housing 12 and the second housing 13 are fastened to each other to form a receiving cavity, and the battery module 2 is disposed in the receiving cavity. The first housing 12 and the second housing 13 may be fixedly connected by a housing nut 14. And openings may be left on the bottom sides of the first casing 12 and the second casing 13, the casing 1 further includes a bottom casing 15, the bottom casing 15 is fixed on the bottom sides of the first casing 12 and the second casing 13 through a bottom casing nut 16, and a casing sealing ring 17 is disposed between the bottom casing 15 and the battery module 2 to ensure the stability of the battery module 2 and the sealing performance of the casing 1.

The assembly process of the battery pack comprises the following steps:

firstly, pre-assembling the plug 3 and the sealing ring 6 on the first shell 12 through the locking fitting 9, further fixing the battery module 2 on the second shell 13, then mutually buckling and aligning the first shell 12 and the second shell 13, and assembling the first shell 12 and the second shell 13 together through the shell nut 14; and then installing the pressure relief assembly 8 in a pressure relief hole on the shell 1, finally assembling a shell sealing ring 17, covering the bottom shell 15, and fixing the bottom shell 15 on the bottom sides of the first shell 12 and the second shell 13 through a bottom shell nut 16 to form a complete battery pack structure.

The embodiment of the application also provides an electric vehicle, and the electric vehicle comprises the battery pack.

Specifically, the electric motor car can be two-wheeled electric motor car or tricycle electric motor car, the battery package of electric motor car includes casing 1, plug 3 and connecting wire 4, be provided with battery module 2 in the casing 1, be provided with installing port 11 on the casing 1, plug 3 can dismantle set up in installing port 11, the one end of connecting wire 4 is connected to battery module 2, the other end of connecting wire 4 can be dismantled and be fixed in on the plug 3. When the plug 3 needs to be changed, the plug 3 can be firstly detached from the mounting port 11 and then disconnected from the connecting wire 4 and the plug 3, so that the plug 3 can be rapidly detached, the convenience of changing the plug 3 is improved, and the use cost of the electric vehicle is reduced on the basis of ensuring the use experience of the electric vehicle.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims (10)

1. A battery pack for an electric vehicle, comprising:

the battery pack comprises a shell (1), wherein a battery module (2) is arranged in the shell (1), and a mounting opening (11) is formed in the shell (1);

the plug (3), the said plug (3) is set up in the said mounting port (11) removably;

the connecting wire (4), the one end of connecting wire (4) is connected to battery module (2), the other end of connecting wire (4) can be dismantled and be fixed in on plug (3).

2. The battery pack according to claim 1, wherein the plug (3) comprises a plug main body (31) and a fixing member (32) arranged on the plug main body (31) and facing the inner side of the housing (1), the fixing member (32) is provided with a fixing hole, and the other end of the connecting wire (4) is inserted into the fixing hole.

3. A battery pack as claimed in claim 2, wherein the plug (3) further comprises a retaining member (33), the fixing member (32) comprises a circular side wall, the circular side wall surrounds the fixing hole, a locking through hole communicated with the fixing hole is formed in the circular side wall, and the retaining member (33) is inserted into the locking through hole and abuts against the connecting wire (4).

4. The battery pack according to claim 2, wherein a metal spring (34) is disposed in the plug (3), and the other end of the connecting wire (4) is inserted into the fixing hole and electrically connected to the metal spring (34).

5. A battery pack according to claim 2, wherein a plurality of said fixing members (32) are provided on said plug main body (31), and adjacent fixing members (32) are spaced apart from each other by a barrier (5).

6. The battery pack according to claim 2, further comprising a sealing ring (6), wherein the outer periphery of the plug main body (31) forms a stepped structure, and the sealing ring (6) is sleeved on the stepped structure and is sandwiched between the stepped structure and the edge of the mounting opening (11).

7. The battery pack according to claim 6, wherein the side of the sealing ring (6) facing the mounting opening (11) is provided with an annular bead (7), the annular bead (7) abutting against the edge of the mounting opening (11).

8. Battery pack according to claim 7, characterized in that the plug (3) is fixed in the mounting opening (11) by means of a locking fitting (9) so that the annular bead (7) abuts in the deformed state against the edge of the mounting opening (11).

9. The battery pack according to claim 1, further comprising a pressure relief assembly (8), wherein the housing (1) is provided with a pressure relief hole, and the pressure relief assembly (8) is mounted in the pressure relief hole.

10. An electric vehicle comprising the battery pack according to any one of claims 1 to 9.

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