CN201156553Y - Combined battery - Google Patents

Abstract

The utility model relates to a combined battery, which comprises a shell, wherein the bottom of the shell is provided with an electrode hole; the cover plate is arranged on the shell, and an electrode hole is also formed in the cover plate; the honeycomb structure is arranged in the shell, and a plurality of battery winding core accommodating parts and positive and negative electrode mounting parts are arranged on the honeycomb structure; a battery roll core placed in the honeycomb-structured battery roll core accommodating portion; the upper fixing plate and the lower fixing plate are respectively provided with an electrode hole; positive and negative electrodes and a fixing member mounted on the electrode mounting part of the honeycomb structure and protruding out of each electrode hole; the cell winding cores are connected in series and/or in parallel in the honeycomb structure, and the upper fixing plate and the lower fixing plate are installed on two sides of the honeycomb structure through fixing pieces. A plurality of battery roll cores are respectively arranged in the honeycomb structure to form a battery unit, which can be regarded as a large high-capacity battery, so that the overall performance of the battery is improved.

Description

Combined battery

technical field

The utility model relates to a combined battery, in particular to a combined battery assembled by a plurality of battery rolling cores.

Background technique

With the development of science and technology and the increasingly serious problem of the earth's energy shortage, the development of electric vehicles and hybrid vehicles has attracted more and more attention, but electric vehicles have not found a suitable power source. Due to the advantages of light weight, large capacity, and no memory effect, lithium-ion batteries have been widely used in various fields in recent years, especially digital devices such as mobile phones, computers, and digital cameras have adopted lithium-ion batteries as power sources. However, due to safety reasons, such as lithium batteries are prone to overheating, burning, or explosion during use, lithium batteries cannot be widely used commercially in the field of electric vehicles. In addition, electric vehicles generally use large-capacity power batteries. Therefore, higher requirements are put forward for the development of power batteries.

Utility model content

The technical problem to be solved by the utility model is to provide a safe high-capacity combined battery.

In order to solve the above technical problems, the utility model provides the following technical solutions: the combined battery includes a casing, and the bottom of the casing is provided with electrode holes; the cover plate on the casing is also provided with electrode holes; placed in the casing The honeycomb structure is provided with several battery core accommodation parts and positive and negative electrode installation parts on the honeycomb structure; the battery core placed in the battery core accommodation part of the honeycomb structure; the upper and lower fixing plates, the upper and lower fixing The plates are respectively provided with electrode holes; the positive and negative electrodes and the fixing parts are installed on the electrode mounting part of the honeycomb structure and protrude from each electrode hole; the battery cores are connected in series and/or in parallel in the honeycomb structure, and the upper and lower fixing plates pass through Fixing pieces are installed on both sides of the honeycomb structure.

It can be seen from the above scheme that in a honeycomb battery unit, each battery core is placed in a honeycomb hole. Once any accident occurs, such as battery short circuit, overheating, excessive pressure, etc., the safety valve of the battery core will automatically cut off. In this battery, one battery core stopped working, while the whole battery cell was still working normally. And because of the integrated unit design, each battery winding core is organically placed in its own honeycomb hole, and its honeycomb structure makes the battery winding cores not affected by each other's temperature rise during charging and discharging. Maintain the stability of each state, thereby greatly improving the safety. This invention reduces the internal resistance of the battery, and improves the consistency and working stability.

A further technical solution is that the honeycomb structure is made of ceramic materials.

Due to the low thermal conductivity, thermal stability, and acid and alkali resistance of ceramic materials, the safety of battery work is greatly improved, especially for lithium batteries, the use of this honeycomb ceramic design technology can overcome the disadvantages of combined batteries. The problem that the heat generated in the process cannot be effectively controlled.

Description of drawings

Fig. 1 is a structural exploded view of the utility model;

Fig. 2 is a perspective view of the utility model housing;

Fig. 3 is the perspective view of the utility model honeycomb structure;

Fig. 4 is the sectional view of honeycomb structure of the present utility model;

Fig. 5 is a perspective view of the fixing plate of the present invention.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Detailed ways

As shown in Figure 1, the combined battery of the present invention includes: a casing 1, a honeycomb structure 2, a cover plate 3, a number of battery cores 4, upper and lower fixing plates 5a and 5b, positive and negative electrodes 6a and 6b and fixing parts . Referring to FIG. 2 , the casing 1 can accommodate the battery core 4 and the honeycomb structure 2 , and an electrode hole 8 is provided at the bottom of the casing 1 , and the negative electrode 6 b passes through the electrode hole 8 of the casing 1 . Referring to Fig. 3 and Fig. 4, the honeycomb structure 2 is provided with a number of battery core accommodation parts 20, the battery core 4 is placed in the battery core accommodation part 20, and there are four symmetrically arranged bolt holes 9 on the honeycomb structure 2 And the positive and negative electrode installation parts 22 located in the center of both ends of the honeycomb structure 2. In this embodiment, the bolt hole 9 is a through hole, and the fixing member includes a fixing bolt 7a and a nut 7b. Referring to FIG. 5 , the upper and lower fixing plates 5 a and 5 b are also provided with bolt holes 9 corresponding to the positions of the bolt holes 9 on the honeycomb structure 2 and electrode holes 8 located in the central positions of the upper and lower fixing plates 5 a and 5 b; The cover plate 3 covers the casing 1 , and the cover plate 3 is also provided with an electrode hole 8 , and the positive electrode 6 a passes through the electrode hole 8 on the cover plate 3 .

When assembling the combined battery of the utility model, firstly put the battery winding core 4 into the battery winding core receiving part 20 of the honeycomb structure 2 respectively, connect in series and/or parallel in the honeycomb structure 2, and then place the upper and lower fixing plates 5a, 5b are respectively placed on both sides of the honeycomb structure 2, the fixing bolts 7a pass through the honeycomb structure 2 and the bolt holes 9 of the upper and lower fixing plates 5a, 5b, and then cooperate with the nut 7b to tighten and fix, and then the positive and negative electrodes 6a and 6b are installed on the electrode mounting part 22 of the honeycomb structure 2, the assembled honeycomb unit is put into the casing 1, filled with liquid electrolyte, the cover plate 3 seals the casing 1, and the positive and negative electrodes 6a and 6b are separated from each other. Electrode hole 8 passes through and gets final product. In order to prevent the liquid electrolyte from leaking out, a sealing member (not shown) may also be provided at positions such as electrode holes.

Furthermore, the honeycomb structure 2 of the combined battery is made of ceramic material. Since the ceramic material has low thermal conductivity, non-conductivity, acid resistance, alkali resistance and good thermal stability, the honeycomb structure 2 made of ceramic material is used as the battery The direct carrier of the winding core 4 can stabilize the working temperature between the battery winding cores 4. Even if a single battery winding core 4 overheats, it will not spread the heat to other battery winding cores, which will greatly improve the safety of the combined battery , In addition, the honeycomb structure of ceramic materials provides a relatively constant ideal working environment for each battery core, correspondingly reduces the change in battery internal resistance, and plays a role in reducing the risk of combined batteries and improving safety.

In addition, in the foregoing embodiments, the battery core 4 can be a lithium-ion battery core or a nickel-metal hydride battery core; the liquid electrolyte can be lithium cobaltate, lithium iron phosphate, lithium manganate, lithium polymer, nickel-hydrogen, etc. Various media; and each battery winding core can be directly connected in series and parallel in the honeycomb structure, or can be made in parallel in a honeycomb structure monomer, and connected in series outside to produce batteries with different nominal voltages, different capacitances and different uses. Battery.

As mentioned above, the combined battery of the present utility model adopts the Uni-module design, which breaks the current traditional structure of a battery with only one battery winding core, and puts multiple battery winding cores in the same electrolytic cell. The liquid environment improves the relative consistency in the electrochemical reaction of charging and discharging, and solves the problem of poor consistency when the battery is connected in parallel externally. The problem of discharge can improve the life of the combined battery pack, which is conducive to the production of a large number of battery power packs connected in series and parallel for different purposes, especially suitable for various types of electric vehicles (EV), including hybrid electric vehicles (HEV).

Of course, the technical concept of the utility model is not limited to the above-mentioned embodiment, and many different specific solutions can also be obtained according to the concept of the utility model. For example, the external shape of the combined battery in the above-mentioned embodiment is cylindrical, or it can be square Cylindrical or other shapes; the fixing bolts for fixing the upper and lower fixing plates and the honeycomb structure can also adopt the method of not penetrating the honeycomb structure, and set threaded holes on the upper and lower sides of the honeycomb structure. When fixing and installing, screw the bolts into the threaded holes The fixing part can also fix the upper and lower fixing plates on the honeycomb structure by interlocking the upper and lower fixing plates with the protrusions and grooves provided on the honeycomb structure; such changes and equivalent transformations All should be included within the scope described in the claims.

Claims (6)

1. The combined battery is characterized in that it comprises: Shell, with electrode holes at the bottom of the shell; The cover plate provided on the shell, and the cover plate is also provided with electrode holes; A honeycomb structure placed in the casing, on which are provided several battery core accommodation parts and positive and negative electrode mounting parts; a battery core placed in the battery core housing of the honeycomb structure; The upper and lower fixing plates are respectively provided with electrode holes; The positive and negative electrodes are installed on the electrode mounting part of the honeycomb structure and protrude from each electrode hole; and fixtures; The battery cores are connected in series and/or in parallel in the honeycomb structure, and the upper and lower fixing plates are installed on both sides of the honeycomb structure through fixing pieces. 2. The combined battery according to claim 1, characterized in that: The honeycomb structure is made of ceramic material. 3. The combined battery according to claim 1, characterized in that: The battery core is a lithium ion battery core. 4. The combined battery according to claim 1, characterized in that: The fixing part is a bolt passing through the honeycomb structure and a nut matched with the bolt, and bolt holes are provided on the honeycomb structure and the upper and lower fixing plates. 5. The combined battery according to claim 4, characterized in that: The number of the bolts is 4, and they are arranged symmetrically on the honeycomb structure. 6. A battery pack comprising at least one combined battery according to claim 1, characterized in that: Each assembled battery is externally connected in series.

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