CN219677400U - Cylindrical battery module with same-end lead-out electrode - Google Patents

Abstract

The utility model discloses a cylindrical battery module with electrodes led out from the same end, which comprises a battery tray, wherein a plurality of cylindrical batteries are arranged in the battery tray, the installation direction of the cylindrical batteries is positive upwards, the cap end of the cylindrical batteries is positive, and the shell of the cylindrical batteries is negative; a busbar mounting rack is arranged above the plurality of cylindrical batteries; the busbar assembly is arranged on the busbar mounting frame and is provided with a positive electrode output end of the battery module and a negative electrode output end of the battery module; the positive electrode of each cylindrical battery is electrically connected with the positive electrode output end of the battery module through a bus bar assembly, and the negative electrode of each cylindrical battery is electrically connected with the negative electrode output end of the battery module through a bus bar assembly; the busbar subassembly top still is provided with the module upper cover, set up two respectively with battery module positive pole output and battery module negative pole output corresponding first through-hole on the module upper cover.

Description

Cylindrical battery module with same-end lead-out electrode

Technical Field

The utility model relates to the technical field of batteries, in particular to a cylindrical battery module with electrodes led out from the same end.

Background

A battery is a device capable of converting chemical energy into electrical energy, and has a positive and a negative electrode. The battery is used as an energy source, so that stable voltage and stable current can be obtained, power can be stably supplied for a long time, the influence of external climate and temperature is avoided, and the performance is stable and reliable. Due to the rising energy cost and the increasing serious environmental pollution problem, electric vehicles are paid more attention to, and the battery module is used as a main energy storage element on the electric vehicles and is a key component of the electric vehicles, so that the electric vehicles are greatly influenced.

At present, the existing cylindrical battery module electrode extraction mode is that positive and negative electrodes are respectively arranged at the positive and negative ends of an electric core, so that the processing technology of the battery module is complex, the production efficiency is low, and the production cost is high.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a cylindrical battery module with an electrode led out from the same end, which is used for solving at least one of the technical problems.

The utility model is realized by the following technical scheme:

the cylindrical battery module with the same end for leading out the electrode is characterized by comprising a battery tray, wherein a plurality of cylindrical batteries are arranged in the battery tray, the installation direction of the cylindrical batteries is positive upwards, the cap end of the cylindrical battery is positive, and the shell of the cylindrical battery is negative; a busbar mounting rack is arranged above the plurality of cylindrical batteries; the busbar assembly is arranged on the busbar mounting frame and is provided with a positive electrode output end of the battery module and a negative electrode output end of the battery module; the positive electrode of each cylindrical battery is electrically connected with the positive electrode output end of the battery module through a bus bar assembly, and the negative electrode of each cylindrical battery is electrically connected with the negative electrode output end of the battery module through a bus bar assembly; the busbar subassembly top still is provided with the module upper cover, set up two respectively with battery module positive pole output and battery module negative pole output corresponding first through-hole on the module upper cover.

In the above technical scheme, the positive pole and the negative pole of the cylindrical battery are located at the same end of the battery, when the battery module is installed, the cylindrical battery is firstly placed on the battery supporting plate, then the busbar mounting frame is installed above the cylindrical battery, after the busbar assembly is installed on the busbar mounting frame, the positive pole and the negative pole of the cylindrical battery are respectively connected with the busbar assembly through wires, the positive poles of all the cylindrical batteries are connected with the positive output end of the module, the negative poles of the cylindrical battery are connected with the negative output end of the module, and finally the installation of the battery module is completed after the upper cover of the module is covered.

Further, the battery tray comprises a tray bottom plate and a tray side plate; the tray bottom plate is provided with a plurality of limit posts, each limit post is internally provided with a cylindrical accommodating cavity, and each cylindrical battery is clamped in one cylindrical accommodating cavity.

Install the cylinder battery in spacing post, make the cylinder battery be difficult for taking place to rock because of battery module's rocking, increased the steadiness of cylinder battery installation.

Further, a plurality of first male buckles are arranged on the side wall of the tray, and a plurality of first female buckles corresponding to the first male buckles are arranged on the side wall of the busbar installation frame.

The battery tray and the busbar mounting frame are mounted through the first male buckle and the first female buckle, and when the battery tray and the busbar mounting frame are required to be disassembled and separated, the battery tray and the busbar mounting frame are only required to be separated from each other, so that the battery tray and the busbar mounting frame are more convenient to mount and dismount.

Further, a plurality of clamping blocks are arranged on one side, far away from the battery tray, of the busbar installation frame, and a plurality of clamping holes corresponding to the clamping blocks are formed in the busbar assembly.

Through the joint between fixture block and the draw-in hole, make the busbar subassembly install on the busbar mounting bracket that can be quick, and can prevent that the busbar subassembly from taking place to rock or remove because of battery module's rocking, promoted the connection stability of busbar subassembly.

Further, the module upper cover comprises an upper cover top plate and an upper cover side plate, a plurality of second through holes are formed in the upper cover top plate, each second through hole is communicated with a connecting column, an axial through hole is formed in each connecting column, and the connecting columns penetrate through the busbar mounting frame and then are connected to the tray bottom plate.

Utilize the bolt to pass the spliced pole to be fixed in battery box with the battery module on, promoted the fixed convenience of battery module.

Further, a plurality of second male buckles are arranged on the end face, close to the busbar mounting frame, of the upper cover side plate, and a plurality of second female buckles corresponding to the second male buckles are arranged on the busbar mounting frame.

The quick detachable connection of the module upper cover and the busbar mounting frame is realized through the second male buckle and the second female buckle, so that the convenience and the efficiency of mounting are improved.

Further, a soft PCB is further arranged on the battery tray, the input end of the soft PCB is electrically connected with the busbar assembly, and the output end of the PCB is connected with a connector.

The power parameters on the collection busbar assembly of the soft PCB collection module are transmitted to the BMS system through the connector, so that the running state of the battery module is controlled.

Further, one side of the tray side plate, which is far away from the cylindrical battery, is provided with a vertical clamping groove, and the connector is detachably clamped in the vertical clamping groove.

The connector can be detachably clamped through the vertical clamping groove, so that the connector can be conveniently installed and detached.

Further, the cylindrical battery is connected with the busbar assembly through an aluminum wire conductor.

The weight of the aluminum wire conductor is lower, so that the overall weight of the battery module is reduced, the cost of the aluminum wire conductor is low, and the overall cost of the battery module is reduced. Meanwhile, the aluminum wire also has the function of a fuse, and under extreme conditions, such as when a battery is short-circuited, the aluminum wire is fused, so that the battery does not have electricity to continuously output, and the personal and property safety is protected.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The cylindrical battery is a positive-negative electrode same-end cylindrical battery, so that the busbar assembly is always arranged above the module, and the busbar is not required to be arranged on two sides of the module in a turnover way; the welding of the aluminum wire conductor is always above the module, so that the two sides of the module are not required to be welded in a turnover way; the parts for insulating and protecting the two surfaces required by the electrodes at the upper end and the lower end of the module are saved; the collection of the battery module is easier to obtain, and the assembly process is simplified; the bottom of the module is not provided with an electrode leading-out, so that the installation and the later maintenance of the module are convenient. The utility model simplifies the production process and reduces the production cost.

Drawings

Fig. 1 is a schematic view illustrating a structure of a battery module according to an embodiment of the present utility model;

fig. 2 is an exploded view of a battery module according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a battery tray according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a cylindrical battery according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a bus bar mounting structure according to an embodiment of the utility model;

FIG. 6 is a schematic view of a bus assembly according to an embodiment of the utility model;

FIG. 7 is a schematic view of a module top cover according to an embodiment of the utility model;

fig. 8 is a schematic diagram of aluminum wire connection according to an embodiment of the utility model.

In the figure: 1. a battery tray; 101. a tray base; 102. a tray side plate; 103. a first male buckle; 104. a limit column; 105. a vertical clamping groove; 1051. a limiting block; 1052. a clamping plate; 106. a first connection post; 2. a cylindrical battery; 201. a battery positive electrode; 202. a battery negative electrode; 3. a busbar mount; 301. the first female buckle; 302. the second female buckle; 303. a clamping block; 304. a second connection post; 4. a busbar assembly; 401. the bus is always led out; 402. a total negative extraction bus; 403. a serial bus; 404. a serial bus; 5. a module upper cover; 501. a first through hole; 502. an upper cover top plate; 503. an upper cover side plate; 504. a second through hole; 505. a second male buckle; 6. a soft PCB; 7. a connector; 8. an aluminum wire conductor; 9. the positive electrode output end of the battery module; 10. and the negative electrode output end of the battery module.

Detailed Description

The following description of the embodiments of the present utility model will be made in detail and with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 1 and 2, the present embodiment provides a cylindrical battery module with an electrode led out from the same end, which includes a battery tray 1, the battery tray 1 includes a tray bottom plate 101 and a tray side plate 102 (as shown in fig. 3), a plurality of limiting posts 104 are disposed on the tray bottom plate 101, each of the limiting posts 104 is formed with a cylindrical accommodating cavity, and each of the accommodating cavities is clamped with a cylindrical battery 2.

As shown in fig. 4, the installation direction of the cylindrical battery 2 is positive, the cap end of the cylindrical battery 2 is a battery positive electrode 201, and the cylindrical battery shell is a battery negative electrode 202.

A plurality of busbar mounting frames 3 are arranged above the cylindrical batteries 2, and as shown in fig. 5, a plurality of round holes corresponding to the cylindrical batteries 2 one by one are formed in the busbar mounting frames 3.

As shown in fig. 5, three first female buckles 301 are respectively disposed on two longer side edges of the busbar mounting frame 3, three first male buckles 103 corresponding to the first female buckles 301 are respectively disposed on two longer tray side plates 102, and the battery tray 1 and the busbar mounting frame 3 are clamped and disassembled through the first male buckles 103 and the first female buckles 301.

A plurality of clamping blocks 303 and a plurality of second female buckles 302 are arranged on one side of the busbar mounting frame 3 away from the battery tray 1. The clamping block 303 is clamped with a busbar assembly 4.

Specifically, as shown in fig. 6, the bus bar assembly 4 includes a total positive outgoing bus bar 401, a total negative outgoing bus bar, a series bus bar 403, and a series bus bar 404. The total positive extraction bus bar 401 is connected with the positive output end 9 of the battery module, and the total negative extraction bus bar 402 is connected with the negative output end 10 of the battery module.

As shown in fig. 8, the positive electrode of the cylindrical battery 2 near the total positive extraction bus bar 401 is connected to the total positive extraction bus bar 401 through the aluminum wire conductor 8, and the negative electrode of the cylindrical battery 2 is electrically connected to the serial bus bar 404. The negative electrode of the cylindrical battery 2 near the total negative extraction bus bar 402 is connected with the total negative extraction bus bar 402 through the aluminum wire conductor 8, and the positive electrode of the cylindrical battery 2 is electrically connected with the serial bus bar 404. The anode and the cathode of the cylindrical battery 2 between two adjacent serial buses 404 are respectively connected with the adjacent two serial buses 404 through aluminum wire conductors 8.

The upper side of the busbar assembly 4 is further provided with a module upper cover 5, as shown in fig. 1, and the module upper cover 5 is provided with two first through holes 501 corresponding to the positive electrode output end 9 of the battery module and the negative electrode output end 10 of the battery module respectively.

As shown in fig. 7, the module upper cover 5 includes an upper cover top plate 502 and an upper cover side plate 503, a plurality of second male buckles 505 are disposed on an end surface of the upper cover side plate 503, which is close to the busbar mounting frame 3, and the positions of the second male buckles 505 correspond to the positions of the second female buckles 302, and the module upper cover 5 and the busbar mounting frame 3 are connected through the second male buckles 505 and the second female buckles 302.

As a preferred embodiment, two sides of the tray side plates 102 far away from the cylindrical battery 2 are provided with vertical clamping grooves 105, the tray side plates 102 are further provided with limiting blocks 1051, the limiting blocks 1051 are located below the vertical clamping grooves 105, clamping plates 1052 are clamped in the vertical clamping grooves 105, and when the clamping plates 1052 are clamped in the vertical clamping grooves 105, bottom end faces of the clamping plates 1052 are abutted against the limiting blocks 1051.

The connector 7 is connected to the card 1052, the connector 7 is connected to the flexible PCB6, the flexible PCB6 is clamped to the clamping block 303 on the busbar mounting frame 3, one flexible PCB6 is electrically connected to the total positive outgoing busbar 401, the serial busbar 404 and the serial busbar 403, and the other flexible PCB6 is electrically connected to the total negative outgoing busbar 402, the serial busbar 404 and the serial busbar 403.

Two flexible PCBs 6 are used to collect electrical parameters on the busbar assembly 4 and transmit to the BMS through the connector 7.

As a preferred embodiment, the upper cover plate 502 is provided with 6 second through holes 504, each second through hole 504 is communicated with a connecting column, and an axial through hole is formed in the connecting column. Each of the connection posts includes a first connection post 106 and a second connection post 304. One end of the second connecting post 304 is communicated with the second through hole 504, the other end of the second connecting post 304 passes through the busbar mounting frame 3 and then is communicated with the first connecting post 106, and the second connecting post 304 is fixed on the busbar mounting frame 3. One end of the first connecting column 106 is communicated with the second connecting column 304, and the other end of the first connecting column 106 is fixed on the tray bottom plate 101.

As a preferred embodiment, the positive output end 9 of the battery module and the negative output end 10 of the battery module are connected with metal nuts.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present utility model.

Claims (9)

1. The cylindrical battery module with the same end for leading out the electrode is characterized by comprising a battery tray, wherein a plurality of cylindrical batteries are arranged in the battery tray, the installation direction of the cylindrical batteries is positive upwards, the cap end of the cylindrical battery is positive, and the shell of the cylindrical battery is negative; a busbar mounting rack is arranged above the plurality of cylindrical batteries; the busbar assembly is arranged on the busbar mounting frame and is provided with a positive electrode output end of the battery module and a negative electrode output end of the battery module; the positive electrode of each cylindrical battery is electrically connected with the positive electrode output end of the battery module through a bus bar assembly, and the negative electrode of each cylindrical battery is electrically connected with the negative electrode output end of the battery module through a bus bar assembly; the busbar subassembly top still is provided with the module upper cover, set up two respectively with battery module positive pole output and battery module negative pole output corresponding first through-hole on the module upper cover.

2. The cylindrical battery module with the same-end lead-out electrode according to claim 1, wherein the battery tray comprises a tray bottom plate and tray side plates; the tray bottom plate is provided with a plurality of limit posts, each limit post is internally provided with a cylindrical accommodating cavity, and each cylindrical battery is clamped in one cylindrical accommodating cavity.

3. The cylindrical battery module of the same-end lead-out electrode according to claim 2, wherein a plurality of first male buckles are arranged on the side wall of the tray, and a plurality of first female buckles corresponding to the first male buckles are arranged on the side wall of the busbar mounting frame.

4. The cylindrical battery module with the same-end lead-out electrode according to claim 1, wherein a plurality of clamping blocks are arranged on one side of the busbar mounting frame far away from the battery tray, and a plurality of clamping holes corresponding to the clamping blocks are formed in the busbar assembly.

5. The cylindrical battery module with the same-end lead-out electrode according to claim 2, wherein the module upper cover comprises an upper cover top plate and an upper cover side plate, a plurality of second through holes are formed in the upper cover top plate, each second through hole is communicated with a connecting column, an axial through hole is formed in each connecting column, and the connecting columns penetrate through the busbar mounting frame and are connected to the tray bottom plate.

6. The cylindrical battery module with the same-end lead-out electrode according to claim 5, wherein a plurality of second male buckles are arranged on the end face, close to the busbar mounting frame, of the upper cover side plate, and a plurality of second female buckles corresponding to the second male buckles are arranged on the busbar mounting frame.

7. The cylindrical battery module with the same-end lead-out electrode according to claim 2, wherein a soft PCB is further arranged on the battery tray, an input end of the soft PCB is electrically connected with the busbar assembly, and an output end of the soft PCB is connected with a connector.

8. The cylindrical battery module with the same-end lead-out electrode according to claim 7, wherein a vertical clamping groove is formed in one side, away from the cylindrical battery, of the tray side plate, and the connector is detachably clamped in the vertical clamping groove.

9. The cylindrical battery module with the same-side lead-out electrode according to claim 8, wherein the cylindrical battery and the busbar assembly are connected by an aluminum wire conductor.