Battery pack convenient for battery combination

Abstract

The utility model discloses a battery pack convenient for battery combination, and particularly relates to the field of battery packs, the battery pack comprises a box body, a module is clamped and connected in the box body, and the module comprises a heat dissipation plate, a rubber sheet, a small clamping section, a fixing belt, a small clamping buckle and a box body. According to the utility model, the battery pack is divided into the four modules, and the rubber sheets and the fixing belts are arranged in the modules, so that the battery cells can be safely and firmly fixed in the modules, and can be conveniently and quickly taken down during later repair and maintenance of the battery pack, and through information acquisition of the two acquisition plates, when the battery cells are at a high temperature or damaged, the battery cells can be conveniently and quickly taken down. The power-off can be immediately carried out through the main board, the position of a defective battery cell can be directly obtained through the main board during maintenance, the clamping rings are arranged on the sub-lines, the battery cells can be more conveniently and efficiently installed and replaced, and more time and labor are saved during installation due to the detachable battery cells and tidily-planned combined arrangement.

Description

Technical Field

[0001] The utility model relates to the field of battery packs, and more specifically, to a battery pack that facilitates battery assembly. Background Art

[0002] With the advancement of technology, the demand for electric energy is also increasing day by day. Especially in recent years, with the rise of environmental awareness, vehicles driven by electric energy have replaced those driven by fossil fuels to achieve the goal of zero emissions and zero pollution. Among them, the battery pack is the heart of the electric vehicle. Usually, the battery pack is composed of multiple battery cells connected in series or in parallel.

[0003] After searching, the existing patent (publication number: CN110061171A) discloses a combined battery pack module structure and its maintenance method, including a number of freely combinable battery pack module units, each battery pack module unit is composed of a positive busbar, an insulating plate, a negative busbar, a battery cell and a bottom plate arranged in sequence from top to bottom, and the negative busbar and the insulating plate are respectively provided with negative busbar through holes and insulating plate through holes corresponding to the battery cell, and the positive busbar is formed by stamping to form a downwardly protruding connection portion, which passes through the insulating plate through hole and the negative busbar through hole and then welded to the positive electrode of the battery cell, and the negative busbar through hole is welded to the negative electrode of the battery cell, and the negative busbar through hole is welded to the negative electrode of the battery cell, and a negative electrode ear is provided at one end of the negative busbar, and a positive electrode ear is provided on the positive busbar on the side opposite or adjacent to the negative busbar ear. The present invention has the advantages of low manufacturing cost, high safety, convenient later maintenance, effective recycling, and high battery pack energy density. In the process of realizing the utility model, the inventor found that the prior art has the following problems:

[0004] Most existing battery packs are composed of battery cells to form modules, and modules to form battery packs. Therefore, it takes a lot of time and effort to install and use them. If there is a problem, it is also troublesome to disassemble and inspect them. In addition, some battery packs ignore the problem of heat dissipation in order to squeeze the space utilization rate and pursue large-capacity battery packs, which leads to problems such as excessively high battery pack temperatures and fires.

[0005] Therefore, in order to solve the above problems, a battery pack which is convenient for battery combination is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a battery pack that is convenient for battery combination to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a battery pack for convenient battery assembly, comprising a box body, the interior of which is snap-connected with a module, the module comprising a heat sink, a rubber sheet, a small card section, a fixing belt, a small buckle and a box body;

[0008] A small clip is fixedly connected to the upper side of one side of the box body, and a movable connection is formed between the small clip and the fixing belt. A heat sink is fixedly connected to the inside of the box body, and rubber sheets are fixedly connected to both sides of the heat sink respectively. A small buckle is fixedly connected to the upper side of the other side of the box body, and a snap connection is formed between the small clip and the small buckle.

[0009] Preferably, a main beam is fixedly connected inside the box body, a first acquisition board and a second acquisition board are fixedly connected above the main beam, and the first acquisition board and the second acquisition board are connected via a transmission line.

[0010] Preferably, a battery is inserted inside the module, the battery core comprises a negative electrode and a positive electrode, and the two electrodes of the battery core are snap-connected with the sub-wire via a snap ring.

[0011] Preferably, a main positive contactor is fixedly connected to the front end of the box body, a main negative contactor is fixedly connected to the front end of the box body, and wire tubes are fixedly connected to the inner walls on both sides of the box body.

[0012] Preferably, one end of the first acquisition board is connected to the main board via a transmission line, the first acquisition board and the second acquisition board are connected to the module via an acquisition line, and the main board is connected to the main positive contactor and the main negative contactor via a busbar.

[0013] Preferably, a buckle is fixedly connected to the outer side of the box body, the large buckle is snap-fitted with a large clamping joint, the large clamping joint is fixedly connected to the outer side of the shell, ventilation holes are respectively provided on both sides of the shell, and the shell is made of high temperature resistant explosion-proof material.

[0014] Preferably, the positive electrode of the battery core is connected in series with the negative electrode of the next battery via a sub-line, and the modules are connected in series via a bus bar.

[0015] Preferably, the module is composed of nine battery cells, and the battery pack is composed of four modules.

[0016] Technical effects and advantages of the utility model:

[0017] 1. Compared with the prior art, the battery pack with convenient battery combination divides the battery pack into four modules, and rubber sheets and fixing belts are arranged in the modules, so that the battery cells can be safely and securely fixed in the modules. In the later repair and maintenance of the battery pack, the battery cells can be removed quickly and conveniently. Through the information collection of the two acquisition boards, when the battery cells are overheated or damaged, the power can be immediately cut off through the main board. During maintenance, the location of the problematic battery cells can be directly obtained through the main board. The clamping ring is arranged on the sub-line, which can make the installation and replacement of the battery cells more convenient and efficient. The detachable battery cells are neatly planned and arranged in combination, which saves time and effort during installation.

[0018] 2. Compared with the prior art, the battery pack with convenient battery combination sets a heat insulation plate between the modules to isolate the heat generated by the batteries when working. Ventilation holes are opened in the outer shell of the battery pack to allow the heat inside the battery pack to dissipate. Insulation and heat dissipation are performed from the inside and outside respectively, thereby avoiding fire caused by excessively high temperature. The outer shell uses high temperature resistant and explosion-proof materials, which further improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main body of the utility model.

[0020] Figure 2 It is a three-dimensional schematic diagram of the utility model.

[0021] Figure 3 It is a schematic diagram of the module of the utility model.

[0022] Figure 4 This is a structural diagram of the battery core of the utility model.

[0023] Figure 5 It is a top view schematic diagram of the utility model.

[0024] The accompanying drawings are marked as follows: 1. box body; 2. battery cell; 201. negative electrode; 202. positive electrode; 3. sub-line; 4. module; 401. heat insulation board; 402. rubber sheet; 403. small clip; 404. fixing belt; 405. small buckle; 406. box body; 5. main positive contactor; 6. main negative contactor; 7. large buckle; 8. main board; 9. first collection board; 10. second collection board; 11. busbar; 12. wire tube; 13. transmission line; 14. collection line; 15. main beam; 16. outer shell; 17. large clip; 18. snap ring; 19. vent. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] As attached Figure 3 and Figure 4 A battery pack for convenient battery assembly shown in the figure includes a box body 1, a module 4 is snap-connected inside the box body 1, and the module 4 includes a heat insulation board 401, a rubber sheet 402, a small card section 403, a fixing belt 404, a small buckle 405 and a box body 406;

[0028] A small clip 403 is fixedly connected to the upper part of one side of the box body 406, and a movable connection is formed between the small clip 403 and the fixing belt 404. A heat insulation board 401 is fixedly connected to the inside of the box body 406, and rubber sheets 402 are fixedly connected to both sides of the heat insulation board 401 respectively. A small buckle 405 is fixedly connected to the upper part of the other side of the box body 406, and a snap-fit ​​connection is formed between the small clip 403 and the small buckle 405.

[0029] Among them: the fixing belt 404 is opened through the small buckle 405, and every three battery cells 2 form a slot. The integrated battery cells 2 are placed in sequence between the insulation plates 401. After the nine battery cells 2 are placed, the fixing belt 404 is reset, and the positive electrode 202 of the battery cell 2 is connected in series with the negative electrode 201 of the next battery cell 2 through the sub-line 3, and the two ends of the sub-line 3 are provided with snap rings 18 to facilitate the connection between the two poles of the battery cell 2. At this time, a module 4 is installed.

[0030] Embodiment 2

[0031] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods. Figures 1 to 5 As shown, see the following description for details:

[0032] As a preferred embodiment, a main beam 15 is fixedly connected inside the box body 1 , a first collection board 9 and a second collection board 10 are fixedly connected above the main beam 15 , and the first collection board 9 and the second collection board 10 are connected via a transmission line 13 .

[0033] As a preferred embodiment, a battery core 2 is inserted into the interior of the module 4, and the battery core 2 includes a negative electrode 201 and a positive electrode 202. The two poles of the battery core 2 are snap-connected with the sub-line 3 through a snap ring 18; further, the positive electrode 202 of the battery core 2 is connected in series with the negative electrode 201 of the next battery core 2 through the sub-line 3, and snap rings 18 are provided at both ends of the sub-line 3 to facilitate the connection between the two poles of the battery core 2.

[0034] As a preferred embodiment, the front end of the box body 1 is fixedly connected to the main positive contactor 5, the front end of the box body 1 is fixedly connected to the main negative contactor 6, and the inner walls on both sides of the box body 1 are fixedly connected to the wire tube 12; further, the busbar 11 transfers electrical energy to the main positive contactor 5 and the main negative contactor 6 for use.

[0035] As a preferred embodiment, one end of the first acquisition board 9 is connected to the main board 8 through a transmission line 13, the first acquisition board 9 and the second acquisition board 10 are connected to the module 4 through an acquisition line 14, and the main board 8 is connected to the main positive contactor 5 and the main negative contactor 6 through a busbar 11; further, after the main board 8 obtains information from the first acquisition board 9 and the second acquisition board 10, it controls the main positive contactor 5 and the main negative contactor 6 to output power.

[0036] As a preferred embodiment, a large buckle 7 is fixedly connected to the outer side of the box body 1, and the large buckle 7 is snap-connected with a large clamping section 17. The large clamping section 17 is fixedly connected to the outer side of the outer shell 16. Ventilation holes 19 are respectively provided on both sides of the outer shell 16, and the outer shell 16 is made of high-temperature resistant and explosion-proof material; further, the outer shell 16 is firmly fixed on the box body 1, and the ventilation holes 19 are opened to dissipate heat for the battery core 2 during operation.

[0037] As a preferred embodiment, the positive electrode 202 of the battery cell 2 is connected in series with the negative electrode 201 of the next battery cell 2 via the sub-line 3, and the modules 4 are connected in series via the busbar 11; further, the battery cells 2 inside the entire battery pack are connected in series.

[0038] As a preferred embodiment, the module 4 is composed of nine battery cells 2, and the battery pack is composed of four modules 4; further, the entire battery pack is neatly arranged to facilitate later repair and maintenance.

[0039] The working process of the utility model is as follows:

[0040] First, when the device is used later, the module 4 is taken out from the battery pack, and the fixing belt 404 is opened through the small buckle 405. Every three battery cells 2 form a slot, and the integrated battery cells 2 are placed in sequence between the heat insulation plates 401. The positive electrode 202 of the battery cell 2 is connected in series with the negative electrode 201 of the next battery cell 2 through the sub-line 3, and the two ends of the sub-line 3 are provided with a clamping ring 18 to facilitate the connection between the two poles of the battery cell 2. After the battery cell 2 is placed, the fixing belt 404 is clamped, and then the module 4 is placed in the box 1. The modules 4 are connected by the busbar 11, and the busbar 11 between the front and rear modules 4 is connected through the wire tube 12. The second acquisition board 10 is responsible for collecting the temperature of the two modules 4 at the back and the status of the battery core 2 through the acquisition line 14. The first acquisition board 9 is responsible for collecting the temperature of the two modules 4 at the front and the status of the battery core 2. The collected information is transmitted to the main board 8 through the transmission line 13. The main board 8 handles the power supply and power off of the battery pack. Then the busbar 11 transmits the electric energy to the main positive contactor 5 and the main negative contactor 6 for use. Finally, the large card section 17 of the shell 16 is buckled with the large buckle 7 to make the battery pack complete. Ventilation holes 19 are respectively opened on both sides of the shell 16 to ventilate and dissipate heat for the battery core 2 when it is working. This is the working principle of the conveniently combined battery pack.

[0041] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A battery pack for convenient battery assembly, comprising a box (1), characterized in that: The box body (1) is internally snap-connected with a module (4), wherein the module (4) comprises a heat insulation board (401), a rubber sheet (402), a small snap joint (403), a fixing belt (404), a small snap buckle (405) and a box body (406); A small clip (403) is fixedly connected to the upper side of one side of the box body (406), and a movable connection is formed between the small clip (403) and the fixing belt (404). A heat insulation board (401) is fixedly connected to the inside of the box body (406), and rubber sheets (402) are fixedly connected to both sides of the heat insulation board (401). A small buckle (405) is fixedly connected to the upper side of the other side of the box body (406), and a snap connection is formed between the small clip (403) and the small buckle (405).

2. A battery pack for convenient battery assembly according to claim 1, characterized in that: A main beam (15) is fixedly connected inside the box body (1), a first collection board (9) and a second collection board (10) are fixedly connected above the main beam (15), and the first collection board (9) and the second collection board (10) are connected via a transmission line (13).

3. A battery pack for convenient battery assembly according to claim 1, characterized in that: A battery core (2) is inserted into the module (4), the battery core (2) comprising a negative electrode (201) and a positive electrode (202), and the two electrodes of the battery core (2) are snap-connected to the sub-wire (3) via a snap ring (18).

4. A battery pack for convenient battery assembly according to claim 1, characterized in that: The front end of the box body (1) is fixedly connected to a main positive contactor (5), the front end of the box body (1) is fixedly connected to a main negative contactor (6), and the inner walls on both sides of the box body (1) are fixedly connected to wire tubes (12).

5. A battery pack for convenient battery assembly according to claim 2, characterized in that: One end of the first acquisition board (9) is connected to the main board (8) via a transmission line (13); the first acquisition board (9) and the second acquisition board (10) are connected to the module (4) via an acquisition line (14); and the main board (8) is connected to the main positive contactor (5) and the main negative contactor (6) via a busbar (11).

6. A battery pack for convenient battery assembly according to claim 1, characterized in that: A large buckle (7) is fixedly connected to the outer side of the box body (1), and the large buckle (7) is snap-connected to a large clamping joint (17). The large clamping joint (17) is fixedly connected to the outer side of the shell (16). Ventilation holes (19) are respectively provided on both sides of the shell (16), and the shell (16) is made of high temperature resistant explosion-proof material.

7. A battery pack for convenient battery assembly according to claim 3, characterized in that: The positive electrode (202) of the battery cell (2) is connected in series to the negative electrode (201) of the next battery cell (2) via a sub-line (3), and the modules (4) are connected in series via a bus bar (11).

8. The battery pack for convenient battery assembly according to claim 7, characterized in that: The module (4) is composed of nine battery cells (2), and the battery pack is composed of four modules (4).

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