CN217444540U

CN217444540U - Battery pack and vehicle

Info

Publication number: CN217444540U
Application number: CN202220587707.7U
Authority: CN
Inventors: 王咸进; 程志刚; 牟越
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-09-16
Anticipated expiration: 2032-03-17

Abstract

The application discloses battery package and vehicle, battery package includes: the box body comprises a bottom plate and side plates, and the side plates are arranged around the periphery of the bottom plate to form an installation space; a battery module disposed in the installation space; a slave control unit connected to the battery module and located in the installation space; the obliquely arranged slave control bracket is arranged on the bottom plate and arranged at the side of the battery module; the slave control unit is detachably mounted on the slave control bracket. This application is favorable to sparingly from the occupation space of accuse support in the box to fix and receive the extrusion in order to avoid the battery module on the bottom plate of box, thereby simplify the design of battery package, structurally more safe and reliable, and can increase battery energy density, improve the collection efficiency of battery package.

Description

Battery pack and vehicle

Technical Field

The application relates to the technical field of power batteries, in particular to a battery pack and a vehicle.

Background

The battery pack is a power source of the electric automobile, is one of core components of the electric automobile, and has a great variety of structural designs depending on the type, shape and size of the battery, the placement space on the automobile body and the like.

The core component of the electric automobile is a battery pack which provides electric energy for the whole automobile, so that the requirement on the energy density of the battery pack is higher and higher, and the electric automobile is provided with more endurance.

The existing battery pack has a larger bottleneck in the aspects of light structure and improved energy density, and is difficult to meet the requirements of higher and higher safety and endurance. The existing battery pack structure comprises a box body, a box cover, a battery module, a master control unit and a slave control unit, wherein the box cover is installed together with the box body, and the battery module, the master control unit and the slave control unit are installed in a space enclosed by the box body and the box cover. Wherein, the slave unit need be installed in the box through the slave control support, but because the slave control support has contained many crossbeams and longerons, mainly provide sufficient intensity and rigidity to bear the weight of the slave unit, such structure of slave control support occupies the more space of box, thereby can extrude battery module to a certain extent, thereby influence the integrated efficiency of whole battery package.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery package and vehicle to it is complicated to solve current follow accuse supporting structure, reduces the technical problem of the occupation space of following accuse support in the box.

In order to achieve the above object, the present invention provides a battery pack, including: the box body comprises a bottom plate and side plates, and the side plates are arranged around the periphery of the bottom plate to form an installation space; a battery module disposed in the installation space; a slave control unit connected to the battery module and located in the installation space; the obliquely arranged slave control bracket is arranged on the bottom plate and arranged at the side of the battery module; the slave control unit is detachably mounted on the slave control bracket.

Further, the slave control bracket comprises: the obliquely arranged bearing plate is obliquely arranged towards the battery module and is used for bearing the slave control unit; the first fixing plate is connected to the bottom of the bearing plate, and the first fixing plate is detachably arranged on the bottom plate; and a harness plate connected to a top of the carrier plate.

Further, the slave control unit is connected to the battery module through a wire harness, and the wire harness is fixed on the wire harness plate through a wire harness buckle.

Further, the wire harness plate comprises a horizontal plate, the front end of the horizontal plate is connected to the top of the bearing plate, and the rear end of the horizontal plate is provided with an inclined plate which extends obliquely downwards; wherein, all be equipped with on the horizontal plate with the hang plate and be used for fixing the pencil buckle of pencil.

Further, the slave control bracket further comprises: the top of the supporting plate is connected to the bearing plate; and a second fixing plate connected to the bottom of the supporting plate, and detachably mounted on the bottom plate.

Further, the slave control bracket further comprises: the supporting structure is a herringbone structure and comprises two inclined struts, and each inclined strut comprises a side plate and a third fixing plate connected with the side plate.

Further, the slave control bracket further comprises: and the reinforcing rib is connected between the supporting plate and the bearing plate.

Further, the slave control bracket further comprises: the top of each supporting leg is connected to the bearing plate, and the bottom of each supporting leg is fixedly connected to the bottom plate.

The battery pack further comprises a master control unit, a battery pack and a battery pack, wherein the master control unit is arranged between the two slave control units, and the two slave control units are arranged in the installation space along the same direction; and a case cover detachably mounted to the case body.

In order to achieve the above object, the present invention also provides a vehicle including the battery pack as described above.

The technical effect of the utility model lies in, providing a battery package and vehicle, the battery package adopts towards the follow accuse support that battery module slope set up, is favorable to sparingly controlling the occupation space of support in the box from to fix and receive the extrusion in order to avoid the battery module on the bottom plate of box, thereby simplify the design of battery package, structurally more safe and reliable, and can increase battery energy density, improve the collection efficiency of battery package.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a battery pack provided in embodiment 1 of the present application in a closed state.

Fig. 2 is a schematic structural diagram of a battery pack provided in embodiment 1 of the present application in an open state.

Fig. 3 is a schematic structural view of the battery pack provided in embodiment 1 of the present application, without a side plate and a sealing ring.

Fig. 4 is a first structural schematic diagram of a slave control bracket provided in embodiment 1 of the present application.

Fig. 5 is a schematic structural diagram of a slave control bracket provided in embodiment 1 of the present application.

Fig. 6 is a schematic structural diagram three of a slave control bracket provided in embodiment 1 of the present application.

Fig. 7 is a fourth structural schematic diagram of a slave control bracket provided in embodiment 1 of the present application.

Fig. 8 is a first enlarged view of a portion a in fig. 3.

Fig. 9 is a second partial enlarged view of a portion a in fig. 3.

Fig. 10 is a schematic structural diagram of a slave control bracket provided in embodiment 2 of the present application.

The components of the drawings are identified as follows:

100. a battery pack; 1. A box body;

2. a box cover; 3. A battery module;

4. a main control unit; 5. A slave control unit;

6. a slave control bracket; 11. A base plate;

12. a side plate; 13. Carrying a plate;

14. a first fixing plate; 15. A harness plate;

15a, a horizontal plate; 15b, an inclined plate;

16. a wire harness; 17. Wire harness buckling;

131. a first fixing hole; 151. A second fixing hole;

152. a third fixing hole; 16a, a main line;

16b, a first branch line; 16c, a second branch line;

18. a harness protection cover; 19. Reinforcing ribs;

20. a high-low harness connector; 1a, lugs;

11b, a connecting hole; 21. A seal ring;

22. a cushion pad; 23. The module is connected with the bracket;

24. a support plate; 25. A second fixing plate;

13a, an opening; 24a, a notch;

26. supporting legs; 240. A support structure;

241. a first side plate; 242. A second side plate;

243. and a third fixing plate.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

As shown in fig. 1-3, the present invention provides a battery pack 100, which includes a case 1, a case cover 2, a battery module 3, a master control unit 4, a slave control unit 5, and a slave control bracket 6.

Specifically, the box body 1 includes a bottom plate 11 and a side plate 12, and the side plate 12 is enclosed in the periphery of the bottom plate 11 to form an installation space for accommodating the battery module 3, the master control unit 4, the slave control unit 5, the slave control bracket 6 and other components. The outer surface of the side plate 12 is provided with lugs 1a protruding from the surface of the side plate 12, and each lug 1a is provided with at least one connection hole 11b, so that the battery pack 100 can be mounted at other positions. Of course, the side plate 12 may be provided with a through hole penetrating through the body thereof, so that the wire harness 16 and the like pass through the through hole to connect the battery pack 100 with the outside.

The cover 2 is detachably mounted to the case 1, see fig. 2. Wherein, in the process of installing the case cover 2, a sealing ring 21 can be arranged at the joint of the case body 1 and the case cover 2, so that the case body 1 and the case cover 2 form a closed space.

The battery module 3 is arranged in the installation space. The battery module 3 includes a plurality of batteries, and the plurality of batteries are connected in series and in parallel through aluminum bars. The battery module 3 of the present embodiment can be disposed according to the space enclosed by the case body 1 and the case cover 2. For example, as shown in fig. 2, the battery module 3 may be a single-layer battery or a double-layer battery in the installation space. In other embodiments, the battery module 3 may also be a battery with multiple layers, which is not limited herein.

The master control unit 4 and the slave control unit 5 are connected to the battery module 3, respectively, and are located in the installation space, referring to fig. 3. Wherein, the master control unit 4 and the slave control unit 5 are both located at the front end of the battery module 3 and are electrically connected to the high-low harness connector 20. Further, the master control unit 4 is disposed between the two slave control units 5, and the two slave control units 5 are disposed in the installation space along the same direction. In this embodiment, the box 1 is rectangular, and includes long sides and short sides, and two slave control units 5 are arranged on one side of the short sides of the box 1, so as to be favorable to further saving the installation space of the box 1.

It should be noted that, in the present embodiment, the structure of the box cover 2 may be designed according to the installation positions of the components inside the battery pack 100, for example, when the master control unit 4, the slave control unit 5 and the high-low harness connector 20 are disposed at the front end of the battery module 3, the heights of the three may be higher than the height of the battery module 3, and therefore, in order to match the heights of the battery module 3, the master control unit 4, the slave control unit 5 and the high-low harness connector 20, the box cover 2 may have a concave-convex structure, see fig. 2, so as to make the battery pack 100 integrated and compact.

As shown in fig. 3, the slave holder 6 is attached to the bottom plate 11, is provided on the side of the battery module 3, and is inclined toward the battery module 3. Wherein, the slave control unit 5 is detachably mounted on the slave control bracket 6, so that the slave control bracket 6 is used for supporting the slave control unit 5.

As shown in fig. 4, in one embodiment, the slave control bracket 6 includes a carrier plate 13, a first fixing plate 14, and a harness plate 15, which are integrally formed.

The carrier plate 13 is disposed to be inclined toward the battery module 3 for carrying the slave unit 5. The carrier 13 has at least one opening 13a for dissipating heat from the slave unit 5, and the weight of the entire battery pack 100 can be reduced. In this embodiment, the bearing plate 13 is provided with two openings 13a arranged at intervals, so as to dissipate heat of the slave control unit 5; secondly, the material of the carrier plate 13 can be saved, and the weight of the entire battery pack 100 can be reduced. The carrier plate 13 is further formed with at least one set of first fixing holes 131, and when the slave unit 5 is mounted on the carrier plate 13, a fastener (e.g., a bolt) passes through the through hole of the slave unit 5 and is threadedly coupled to the first fixing hole 131, so that the slave unit 5 is fixed on the carrier plate 13.

The first fixing plate 14 is connected to the bottom of the loading plate 13, and the first fixing plate 14 is detachably mounted on the bottom plate 11. The harness plate 15 is connected to the top of the carrier plate 13 and extends obliquely toward the battery module 3. Therefore, the slave control bracket 6 provided by the embodiment can increase the contact area between the first fixing plate 14 and the bottom plate 11, so that when the obliquely arranged slave control bracket 6 carries the slave control unit 5, the fixation of the slave control bracket 6 is more stable and reliable.

As shown in fig. 5, in one embodiment, the slave control bracket 6 may further include a support plate 24 and a second fixing plate 25 which are integrally formed. Of course, the whole slave control bracket 6 may be of a detachable structure, or may be of an integrally formed structure. Preferably, the carrier plate 13 of the present embodiment is integrally formed with the first fixing plate 14, the wire harness plate 15, the support plate 24 and the second fixing plate 25, so that sufficient strength and rigidity can be provided and the mounting of the slave bracket 6 is facilitated.

Further, in one embodiment, as shown in fig. 5, the supporting plate 24 is connected to the carrier plate 13 at the top and faces one side of the battery module 3. The second fixing plate 25 is fixedly connected to the bottom of the supporting plate 24, and the second fixing plate 25 is detachably mounted on the bottom plate 11. In this embodiment, the first fixing plate 14 and the second fixing plate 25 are both fixedly connected to the bottom plate 11 of the box body 1 by bolts, but other connection methods besides the connection method are also possible, and are not limited herein. The support plate 24 may be formed with at least one notch 24a, which is advantageous for saving material and reducing the weight of the battery pack 100.

As shown in fig. 6, in one embodiment, the slave stent 6 may further include a support structure 240, which is a herringbone structure. The support structure comprises two braces, each brace comprising a side plate and a third fixing plate 243 connected to the side plate. Specifically, the carrier plate 13 is attached to the second side plate 242, the wire harness plate 15 is connected to the top of the carrier plate 13 and extends toward the first side plate 241, and the first fixing plate 14 is connected to the bottom of the carrier plate 13 and is attached to the third fixing plate 243. The carrier plate 13 may be attached to the second side plate 242 by welding, and of course, the third fixing plate 243 may also be attached to the first fixing plate 14 by welding, which is not limited herein. Further, the first side plate 241 and the second side plate 242 form an included angle, the included angle is 15 degrees to 60 degrees, the overall volume of the battery pack is not increased due to the arrangement of the slave control bracket 6, and the overall volume of the battery pack is matched with the small-volume development design direction of the battery pack.

As shown in fig. 7, in an embodiment, the slave control bracket 6 further includes a reinforcing rib 19 connected between the supporting plate 24 and the carrier plate 13, so that the structural strength of the slave control bracket 6 can be improved, and the slave control unit 5 can be more stably and reliably fixed on the slave control bracket 6.

As shown in fig. 7 to 9, in the present embodiment, the slave control unit 5 is connected to the battery module 3 through the wire harness 16 (the wire harness 16 is a low-voltage wire harness), and the wire harness 16 is fixed to the harness plate 15 through the wire harness clip 17, so that the wire harness 16 is not broken by being pulled when a vehicle collides, and the reliability of the battery pack 100 is improved. Preferably, the harness plate 15 includes a horizontal plate 15a, a front end of the horizontal plate 15a is connected to the top of the carrier plate 13, and a rear end of the horizontal plate 15a is provided with an inclined plate 15b extending obliquely downward. The wire harness 16 connected to the slave control unit 5 is attached to the surface of the harness plate 15, passes through the horizontal plate 15a and the inclined plate 15b in sequence, and is finally connected to the battery module 3. The horizontal plate 15a and the inclined plate 15b are each provided with a harness catch 17 for fixing the harness 16. At least one row of second fixing holes 151 is formed in the horizontal plate 15a, and at least one row of third fixing holes 152 is formed in the inclined plate 15 b. The wire harness 16 includes a trunk line 16a and a first branch line 16b and a second branch line 16c connected to the trunk line 16a, wherein the trunk line 16a passes through a band of the wire harness buckle 17 and is snapped into the third fixing hole 152 by a snap of the wire harness buckle 17, so that the trunk line 16a is fixedly disposed on the inclined plate 15 b. The first branch line 16b connected to the trunk line 16a is connected to the contact end of the slave unit 5, and the first branch line 16b passes through the twist of the wire harness snap 17 and is snapped into the second fixing hole 151 by the snap of the wire harness snap 17, so that the first branch line 16b is fixedly provided on the horizontal plate 15 a. The second branch line 16c connected to the trunk line is connected to the battery modules 3 to electrically connect the slave unit 5 with the battery modules 3. It should be noted that the second fixing holes 151 and the third fixing holes 152 of the present embodiment are illustrated in a row, but are not limited to other embodiments. The structure of the wire harness snap 17 mentioned above and below in this embodiment is the structure of the wire harness snap 17 at the B-position in fig. 8.

Further, the battery pack 100 provided by the embodiment further includes a harness protection cover 18, and the harness protection cover 18 is disposed above the slave control bracket 6 to avoid the risk that the harness 16 is broken or disconnected due to the extrusion of an external force during the process of closing the box body 1 and the box cover 2. The harness protection cover 18 is provided with a row of through holes, and the ribbon of the harness buckle 17 can pass through the two through holes to fix the harness protection cover 18 on the horizontal plate 15 a. Certainly, the harness buckle 17 can fix the harness protection cover 18 and the first branch line 16b on the horizontal plate 15a at the same time, that is, after the harness protection cover 18 and the first branch line 16b can be bound together by the binding band of the harness buckle 17, the clamping head of the harness buckle 17 is clamped into the second fixing hole 151, so that the harness protection cover and the first branch line are fixed on the horizontal plate 15a, when a vehicle collides, the first branch line 16b cannot be broken due to pulling, and the reliability of the battery pack 100 is improved.

The battery pack 100 of the present embodiment may further include a cooling system (not shown), a module connecting bracket 23, and a cushion pad 22. The cooling system is disposed between the bottom plate 11 and the battery module 3 for performing a heat dissipation process on the battery module 3. The module connecting bracket 23 is detachably connected to the bottom plate 11, and the module connecting bracket 23 can shield the wiring harness 16 connected between the battery module 3 and the main control unit 4 and the wiring harness 16 connected between the battery module 3 and the slave control unit 5, so that when the box cover 2 is covered on the box body 1, the wiring harness 16 is extruded by external force to be broken, broken and the like. In addition, when the vehicle collides, the wire harness 16 is not broken by being pulled, and the reliability of the battery pack 100 is improved. The buffer pads 22 may be disposed on the upper surface of the battery module 3 at intervals, may be disposed on the upper surface of the module connecting bracket 23, and may be disposed between the module connecting bracket 23 and other components (e.g., a main control board), so that the components inside the battery pack 100 are more compact.

It should be noted that the battery pack 100 provided in this embodiment may include other components besides the above components, such as a copper bar fixing plate, a shielding member, a fuse, a power distribution box, and the like, and the connection structure and the function of these components may refer to the existing battery pack 100, which are not described herein again.

The battery pack 100 provided by the embodiment adopts the slave control bracket 6 which is obliquely arranged towards the battery module 3, is favorable for saving the occupied space of the slave control bracket 6 in the box body 1, and is fixed on the bottom plate 11 of the box body 1 to prevent the battery module 3 from being extruded, so that the design of the battery pack 100 is simplified, the battery pack is safer and more reliable in structure, the energy density of the battery can be increased, and the integration efficiency of the battery pack 100 is improved.

The embodiment further provides a vehicle, which includes the battery pack 100 provided in the foregoing, so that the battery pack 100 of the vehicle has integration and compactness, and when the vehicle is subjected to side collision, the risk of high-voltage short circuit caused by damage of internal components of the battery pack 100 can be prevented, the safety performance and the service life of the whole vehicle are improved, and thus the driving safety of a user is ensured.

Example 2

The present embodiment provides a battery pack and a vehicle, which includes most of the technical solutions of any one of the embodiments in embodiment 1, and is different in that, as shown in fig. 10, the slave control bracket may include more than two support legs 26, a top of each support leg 26 is connected to the carrier plate 13, and a bottom thereof is fixedly connected to the bottom plate 11. The supporting foot 26 may be

The model is,

A type, ") type, etc., as long as it can be used to support the carrier plate 13 and can be fixed on the bottom plate 11. Each of the support legs 26 is formed with at least one fixing hole so that the support leg 26 is detachably mounted on the base plate 11. The embodiment can further save the used materials of the slave control bracket and further reduce the weight of the battery pack.

The foregoing detailed description is directed to a battery pack and a vehicle provided in the embodiments of the present application, and specific examples are applied in the detailed description to explain the principles and embodiments of the present application, and the description of the foregoing embodiments is only used to help understanding the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A battery pack, comprising:

the box body comprises a bottom plate and side plates, and the side plates are arranged around the periphery of the bottom plate to form an installation space;

a battery module disposed in the installation space;

a slave control unit connected to the battery module and located in the installation space; and

the obliquely arranged slave control bracket is arranged on the bottom plate and is arranged at the side of the battery module; the slave control unit is detachably mounted on the slave control bracket.

2. The battery pack of claim 1, wherein the slave mount comprises:

the bearing plate is obliquely arranged and used for bearing the slave control unit;

the first fixing plate is connected to the bottom of the bearing plate, and the first fixing plate is detachably arranged on the bottom plate; and

a harness plate connected to a top of the carrier plate.

3. The battery pack according to claim 2,

the slave control unit is connected to the battery module through a wiring harness, and the wiring harness is fixed on the wiring harness board through a wiring harness buckle.

4. The battery pack according to claim 3,

the wire harness plate comprises a horizontal plate, the front end of the horizontal plate is connected to the top of the bearing plate, and the rear end of the horizontal plate is provided with an inclined plate which extends obliquely downwards;

wherein, all be equipped with on the horizontal plate with the hang plate and be used for fixing the pencil buckle of pencil.

5. The battery pack of claim 2, wherein the slave mount further comprises:

the top of the supporting plate is connected to the bearing plate; and

a second fixing plate connected to the bottom of the supporting plate, and detachably mounted on the bottom plate.

6. The battery pack of claim 2, wherein the slave carrier further comprises:

the supporting structure is a herringbone structure and comprises two inclined struts, and each inclined strut comprises a side plate and a third fixing plate connected with the side plate.

7. The battery pack of claim 5, wherein the slave mount further comprises:

and the reinforcing rib is connected between the supporting plate and the bearing plate.

8. The battery pack of claim 2, wherein the slave mount further comprises:

the top of each supporting leg is connected to the bearing plate, and the bottom of each supporting leg is fixedly connected to the bottom plate.

9. The battery pack of claim 1, further comprising:

the master control unit is arranged between the two slave control units, and the two slave control units are arranged in the installation space along the same direction; and

and the box cover is detachably mounted on the box body.

10. A vehicle characterized by comprising the battery pack according to any one of claims 1 to 9.