CN215816212U

CN215816212U - Battery module and car as a house battery

Info

Publication number: CN215816212U
Application number: CN202122250113.5U
Authority: CN
Inventors: 杨婷婷; 田开彪; 艾世龙; 张涵; 孟超
Original assignee: Shenzhen Yijia Smart Technology Co ltd
Current assignee: Shenzhen Yijia Smart Technology Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-02-11
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a battery module and a motor home battery, wherein the battery module comprises a battery pack and an insulating sheet, the battery pack comprises a plurality of stacked single batteries, and any two adjacent single batteries can be electrically connected through a connecting sheet; the insulation sheet is arranged between two adjacent single batteries; the insulation sheet may protrude from the periphery of the unit cell to separate adjacent two connection sheets. The technical scheme of the utility model is beneficial to improving the safety of welding a plurality of single batteries.

Description

Battery module and car as a house battery

Technical Field

The utility model relates to the technical field of battery energy storage, in particular to a battery module and a motor home battery.

Background

The motor home, also known as the home on the wheel, has two functions of the house and the vehicle, and is a movable vehicle type with essential basic facilities at home.

On a motor home, batteries are often used to provide electrical energy to various electrical devices. A typical battery includes a housing and a battery pack disposed within the housing. In order to maximize the utilization of the space inside the casing, the multiple cells of the battery pack are generally assembled in a stacked manner, and due to the proximity between the cells, a welding short circuit phenomenon is easily caused when the adjacent cells are connected in series or in parallel.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a battery module, and aims to solve the technical problem that a battery in the prior art is easy to have a welding short circuit phenomenon when a battery core is connected.

In order to achieve the purpose, the battery module provided by the utility model comprises a battery pack and an insulating sheet, wherein the battery pack comprises a plurality of single batteries which are arranged in a stacked mode, and any two adjacent single batteries can be electrically connected through a connecting sheet; the insulation sheet is arranged between two adjacent single batteries; the insulation sheet may protrude from the periphery of the unit cell to separate adjacent two connection sheets.

Optionally, the insulation sheet includes a fixing sheet disposed between two adjacent single batteries, and the shape of the fixing sheet is adapted to the shape of the single battery.

Optionally, the insulation sheet comprises a separation sheet for separating two adjacent connection sheets; wherein the content of the first and second substances,

the separating sheet extends out of part of the periphery of one side of the fixing sheet.

Optionally, the separating plate is provided with a positioning hole in a penetrating manner, and the connecting plate is provided with a positioning part matched with the positioning hole.

Optionally, the unit cells are in a thin plate shape.

Optionally, the single battery comprises a thin peripheral surface and a laminated surface respectively arranged at two opposite sides of the thin peripheral surface, and the thin peripheral surface is provided with a pole electrically connected with the connecting sheet; wherein the content of the first and second substances,

and any two adjacent poles are arranged in a staggered manner in the thickness direction of the single battery.

Optionally, the connecting sheet is provided with two welding holes corresponding to the two adjacent poles one to one.

Optionally, the battery module further comprises a protective shell, and the protective shell is provided with a protective cavity matched with the battery pack for the embedded installation of the battery pack.

Optionally, the battery module further comprises a BMS protection plate provided to the protection case, the BMS protection plate being electrically connected to the battery pack.

The utility model also provides a motor home battery, which comprises a battery module and a shell, wherein the battery module comprises a battery pack and an insulating sheet, the battery pack comprises a plurality of stacked single batteries, and any two adjacent single batteries can be electrically connected through a connecting sheet; the insulation sheet is arranged between two adjacent single batteries; the insulation sheet can extend out of the periphery of the single battery so as to separate two adjacent connecting sheets; wherein the content of the first and second substances,

the battery module is fixedly arranged in the shell.

According to the battery module, the insulating sheet is arranged between the two adjacent single batteries, so that when the connecting sheet is required to be welded to the single batteries, the insulating sheet can be moved to separate the single batteries required to be welded from the single batteries not required to be welded, and therefore the safety of welding a plurality of single batteries is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a caravan battery according to the present invention;

FIG. 2 is an exploded view of the caravan battery of FIG. 1;

FIG. 3 is a schematic structural view of the caravan of FIG. 2 with a part of the structure omitted;

FIG. 4 is a schematic structural view of the caravan of FIG. 3 with a portion of the structure omitted;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic structural view of the caravan of FIG. 3 without another part of the structure;

fig. 7 is a schematic structural diagram of another embodiment of the caravan battery of the present invention.

The reference numbers illustrate:

1. a housing; 11. a mounting cavity; 12. a support base plate; 13. an upper cover; 2. an output interface; 3. a battery module; 31. a protective shell; 311. a position avoiding cavity; 311a, an electric control groove; 311b, a functional groove; 312. a clamping plate; 313. a fixing member; 314. reinforcing ribs; 315. a protective cavity; 32. a battery pack; 321. a single battery; 312a and a pole column; 33. a BMS protection board; 34. an insulating sheet; 341. a fixing sheet; 342. a separator; 342a, a positioning hole; 35. connecting sheets; 351. a positioning part; 352. welding hole

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a battery module 3.

In the embodiment of the present invention, as shown in fig. 1 to 7, the battery module 3 includes a battery pack 32 and an insulating sheet 34, the battery pack 32 includes a plurality of unit batteries 321 arranged in a stacked manner, and any two adjacent unit batteries 321 can be electrically connected through a connecting sheet 35; the insulating sheet 34 is disposed between two adjacent single batteries 321; the insulating sheet 34 may protrude from the periphery of the unit cell 321 to separate adjacent two connecting sheets 35.

It can be understood that, in the battery module 3 according to the present invention, the insulating sheet 34 is disposed between two adjacent single batteries 321, so that when the connecting sheet 35 needs to be welded to the single batteries 321, the insulating sheet 34 can be moved to separate the single batteries 321 that need to be welded from the single batteries 321 that do not need to be welded, and thus, the safety of welding the plurality of single batteries 321 is effectively improved.

Optionally, the insulation sheet 34 includes a fixing sheet 341 disposed between two adjacent unit cells 321, and the shape of the fixing sheet 341 is adapted to the shape of the unit cell 321. Specifically, the areas of the cross section of the fixing plate 341 and the cross section of the single battery 321 are the same, so that after the insulating sheet 34 is inserted between two adjacent single batteries 321, a user can conveniently judge whether the insulating sheet 34 is installed in place based on whether the periphery of the insulating sheet 34 is aligned with the edge of the single battery 321, and the convenience in installing the battery module 3 is improved; in addition, the shape between the fixing plate 341 and the single battery 321 is adapted, which is also beneficial to avoiding the fixing plate 341 from moving between two adjacent single batteries 321, and is beneficial to improving the installation stability of the fixing plate 341.

Optionally, the insulation sheet 34 includes a separation sheet 342 for separating two adjacent connection sheets 35; wherein the content of the first and second substances,

the separation piece 342 protrudes from a partial periphery of one side of the fixing piece 341. It can be understood that, in the present embodiment, the separating plate 342 is connected to only a portion of the periphery of one side of the fixing plate 341, that is, the separating plate 342 is used to connect the periphery of the fixing plate 341, and the peripheries connected to the fixing plate 341 and the separating plate 342 are not arranged in equal length, which is beneficial to reduce the structural material of the insulating sheet 34, reduce the manufacturing cost of the insulating sheet 34, and reduce the occupied space of the insulating sheet 34.

Alternatively, the separating plate 342 is provided with a positioning hole 342a, and the connecting plate 35 is provided with a positioning portion 351 matched with the positioning hole 342 a. It can be understood that the positioning hole 342a is formed through the separating plate 342 to facilitate the positioning of the connecting plate 35 during the assembling process, and the fixing of the position of the connecting plate 35 is also beneficial to the welding process of the connecting plate 35 after the positioning portion 351 of the connecting plate 35 is inserted into the positioning hole 342 a.

Alternatively, the unit cells 321 are thin plate-shaped.

Alternatively, the unit cell 321 includes a thin peripheral surface provided with the terminal 312a electrically connected to the connecting sheet 35, and a lamination surface provided on opposite sides of the thin peripheral surface; any two adjacent poles 312a are arranged in a staggered manner in the thickness direction of the single battery 321. It can be understood that this embodiment has been eliminated and has been set up a plurality of utmost points post 312a on same extension line scheme to avoid connecting piece 35 and connecting after two adjacent utmost points post 312a, the condition (this mode of arranging is unfavorable for increasing the interval between the connection piece 35) that a plurality of connection pieces 35 are located same extension line appears, that is to say, through adjusting arranging of a plurality of utmost points post 312a, be favorable to increasing the interval between the connection piece 35, and then be favorable to avoiding appearing the phenomenon of welding short circuit when welding connection piece 35.

Optionally, the connecting piece 35 is provided with two welding holes 352 corresponding to the two adjacent poles 312a one to one. It is understood that the welding holes 352 also have a positioning function, and are arranged to facilitate the welding process of the connecting sheet 35 by the assembling personnel and the assembling equipment.

Optionally, the battery module 3 further includes a protective shell 31, and the protective shell 31 is provided with a protective cavity 315 adapted to the battery pack 32, so that the battery pack 32 can be inserted and mounted. It can be understood that the assembled battery pack 32 and the insulating sheet 34 are fixed by the protective case 31, which is advantageous for improving the reliability of the assembly between the battery pack 32 and the insulating sheet 34, and is also advantageous for storage and transportation of the battery module.

Optionally, the battery module 3 further includes a BMS protection plate 33 provided at the protection case 31, and the BMS protection plate 33 is electrically connected to the battery pack 32. It can be understood that the BMS protection board 33 is provided with a BMS battery system, which is mainly for intelligently managing and monitoring the states of the unit batteries 321 to prevent overcharge and overdischarge of the unit batteries 321, thereby effectively extending the service lives of the unit batteries 321.

The utility model further provides a recreational vehicle battery, which comprises a shell 1 and a battery module 3, the specific structure of the battery module 3 refers to the above embodiments, and the recreational vehicle battery adopts all the technical schemes of all the above embodiments, so that the recreational vehicle battery at least has all the beneficial effects brought by the technical schemes of the above embodiments, and the details are not repeated. Wherein, shell 1 includes installation cavity 11, and battery module 3 fixed mounting is in shell 1's installation cavity 11. Specifically, the protective case 31 of the battery module 3 is fixedly connected to the housing 1.

It can be understood that through at 1 internal fixation of shell installation protecting crust 31 to install group battery 32 embedding in protecting crust 31's protection chamber 315, so, protect group battery 32 jointly through two casings, appear the phenomenon such as inflation, removal or collide with in shell 1 with the battery body of avoiding group battery 32, be favorable to improving the power consumption security of car as a house battery.

Optionally, the housing 1 includes a supporting bottom plate 12 and an upper cover 13, the supporting bottom plate 12 and the upper cover 13 cooperate to form the mounting cavity 11, and the protective shell 31 is fixedly mounted on the supporting bottom plate 12. It can be understood that supporting baseplate 12 is arranged in each part of bearing in order to stably put in car as a house, installs protecting crust 31 setting on supporting baseplate 12, is favorable to reducing the installation degree of difficulty of protecting crust 31 on the one hand, and on the other hand also is favorable to improving the stability of putting of protecting crust 31 in installation cavity 11. It should be noted that the design of the present application is not limited thereto, and in other embodiments, the protective shell 31 may also be mounted on the peripheral wall of the mounting cavity 11, which is not limited thereto.

Optionally, the protective shell 31 comprises two clamping plates 312 arranged in parallel to the support base plate 12, the two clamping plates 312 being spaced apart to form a protective cavity 315. It can be appreciated that the design of the protective cavity 315 formed by the two clamping plates 312 on the supporting floor for assembling the battery pack 32 has the advantages of simple structure, easy implementation, etc.

Specifically, in the embodiment of the present application, a plurality of unit cells 321 are sequentially stacked in a line direction of the two clamping plates 312 between the two clamping plates 312 (i.e., the shielding cavities 315). The connecting line direction of the two clamping plates 312 is the thickness direction of the single battery 321. Specifically, the thin plate-shaped single batteries 321 only expand in the thickness direction thereof when being used, and therefore, the design of the present application stacks a plurality of single batteries 321 in parallel, so that the plate surfaces of two adjacent single batteries 321 are abutted to each other to inhibit the expansion of the other one, and then the clamping plate 312 is used to clamp the two exposed single batteries 321, so that the expansion of the whole battery pack 32 can be effectively inhibited, the risk caused by the expansion of the single batteries 321 is effectively reduced, and the service life of the battery pack 32 is effectively prolonged. In addition, the battery cell 321 is arranged in a thin plate shape, so that the protective shell 31 does not need to protect the battery cell 321 at the narrow side of the battery cell 321, and thus, the material and cost of the protective shell 31 are reduced, and the volume of the product is effectively reduced.

Optionally, a clearance cavity 311 is concavely arranged on a side of the clamping plate 312 facing away from the slot. It can be understood that the avoiding cavity 311 is used for avoiding an installation space for installing other components (such as, but not limited to, components such as wires) of the caravan battery in the installation cavity 11, which is beneficial to reducing the volume and weight of the product. Of course, in other embodiments, the clamping plate 312 may not be provided with the avoiding cavity 311, so as to improve the structural strength of the clamping plate 312.

Optionally, the clamping plate 312 extends along the length direction of the supporting base plate 12, the avoiding cavity 311 includes an electrical control slot 311a and a functional slot 311b along the extending direction of the clamping plate 312, and the slot width of the electrical control slot 311a is greater than the slot width of the functional slot 311b, so that the BMS protection plate 33 can be mounted. It can be understood that, in order to adapt to the larger structural size of the BMS protection plate 33, the size of a partial structure of the clamping plate 312 is increased to form the electric control slot 311a capable of accommodating the BMS protection plate 33, so that the inner space of the mounting cavity 11 is effectively utilized, and the space utilization rate of the product is improved.

Optionally, the protective shell 31 further includes a reinforcing rib 314 disposed in the functional groove 311 b. It can be understood that the reinforcing ribs 314 can effectively improve the structural strength of the clamping plate 312, thereby facilitating the clamping plate 312 to suppress the expansion of the battery cells 321.

Optionally, the peripheral edge of the clamping plate 312 on the side remote from the support base 12 abuts at least partially against the inside of the upper cover 13. It can be understood that, this configuration is beneficial to improving the stability of the installation of the protective shell 31 in the installation cavity 11, and is beneficial to improving the structural strength of the outer shell 1, so as to prolong the service life of the product.

Optionally, a plurality of fasteners 313 are spaced across the two clamping plates 312. Specifically, the fixing member 313 is a fixing strip that straddles the two clamping plates 312. It can be understood that, by connecting the two clamping plates 312 through the fixing members 313 respectively, the two clamping plates 312 can be effectively maintained at fixed positions, and the clamping plates 312 are prevented from moving, so as to improve the protection reliability of the protective shell 31. Specifically, the plurality of fixing members 313 are arranged at intervals on the peripheral side of the battery pack 32 to support against the battery pack 32, thereby effectively improving the mounting firmness of the battery pack 32.

Optionally, the protective shell 31 is screwed to the support base 12. It can be understood that the threaded connection between the protective shell 31 and the supporting base plate 12 is a fixed connection mode with wide application, and has the advantages of simple implementation, reliable connection and the like. Specifically, in this embodiment, threaded holes are formed between the protective shell 31 and the supporting base plate 12, and the caravan battery further includes bolts that can sequentially pass through the two threaded holes for threaded connection. It should be noted that the design of the present application is not limited thereto, and in other embodiments, the protective shell 31 and the supporting base plate 12 may be fixedly connected by other connecting methods, such as, but not limited to, welding, and the like.

Optionally, the housing 1 is provided with a positive output interface 2 and a negative output interface 2, the positive output interface 2 and the negative output interface 2 are respectively electrically connected to the battery pack 32, and the positive output interface 2 and the negative output interface 2 are respectively used for plugging and unplugging electrical connection wires of electrical equipment. It can be understood that between the electric connection line of power supply interface on the car as a house battery of prior art and relay or consumer, adopt the mode of thread tightening to fix usually, very inconvenient, based on this, but this application will just, negative pole output interface 2 designs into pluggable structural style, can improve user's power consumption convenience effectively.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A battery module, comprising:

the battery pack comprises a plurality of unit batteries which are arranged in a stacked mode, and any two adjacent unit batteries can be electrically connected through a connecting sheet; and

the insulating sheet is arranged between two adjacent single batteries; the insulation sheet may protrude from the periphery of the unit cell to separate adjacent two connection sheets.

2. The battery module according to claim 1, wherein the insulation sheet comprises a fixing sheet disposed between two adjacent single batteries, and the shape of the fixing sheet is matched with the shape of the single battery.

3. The battery module according to claim 2, wherein the insulation sheet comprises a separation sheet for separating two adjacent connection sheets; wherein the content of the first and second substances,

4. The battery module according to claim 3, wherein the separator has a positioning hole formed therethrough, and the connecting tab has a positioning portion fitted into the positioning hole.

5. The battery module according to any one of claims 1 to 4, wherein the unit cells are in the shape of a thin plate.

6. The battery module according to claim 5, wherein the single battery comprises a thin peripheral surface and laminated surfaces respectively arranged at two opposite sides of the thin peripheral surface, and the thin peripheral surface is provided with a pole electrically connected with the connecting sheet; wherein the content of the first and second substances,

7. The battery module according to claim 6, wherein the connecting piece is provided with two welding holes corresponding to two adjacent poles in a one-to-one manner.

8. The battery module of claim 1, further comprising a protective case having a protective cavity adapted to the battery pack for insertion of the battery pack.

9. The battery module according to claim 8, further comprising a BMS protection plate provided at the sheathing case, the BMS protection plate being electrically connected to the battery pack.

10. A caravan battery comprising a housing and the battery module defined in any one of claims 1 to 9, the battery module being fixedly mounted in the housing.